JPH10172268A - Editing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an apparatus which can edit a plurality of channels by reproducing the data of a plurality of channels from a recording medium to store respectively the channel data of the editing source and destination to a first and a second memory means and recording again the data read from the first memory means to the place before the edition after overwriting such data from the position corresponding to the second particular channel data. SOLUTION: A magneto-optical disc apparatus 1 arranges various operators 7 adjacent to an operator 5. At the upper part of the operator 7, a display panel 9 is arranged. Adjacent to a jog dial 8, an operator 10 for reproduction is arranged and it is then operated for recording and reproducing an audio signal. An analog/digital converting circuit 12 executes the analog/digital conversion to the audio signals SA1 to SA4 in maximum of four channels input from a connector with the predetermined sampling frequency to output the digital audio signal. A data compression circuit 13 converts the signal sent from the A/D converting circuit 12 to blocks to compress the signal in each block.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an editing device,
For example, the present invention can be applied to a case where audio data is edited by applying to a magneto-optical disk device. According to the present invention, when editing a plurality of channel data recorded on a recording medium in which the unit of writing is set to a predetermined data unit length, a plurality of channel data of an editing source is edited from the recording medium in units of the data unit length. By reading the data, editing the data on the memory, and recording the data at the editing destination, it is possible to execute editing processes such as copying, moving, exchanging, and erasing even short data having a data unit length or less.

[0002]

2. Description of the Related Art Conventionally, in a magneto-optical disk drive,
Continuous audio data is recorded in cluster units, and the recorded audio data is recorded in UTOC (User Tab).
le ofContents).

FIG. 28 is a schematic diagram showing the configuration of this cluster. The magneto-optical disk drive inputs the sequentially input right and left channel audio data to an audio compression circuit, and outputs the data at a predetermined period (11.61 [msec]).
c)), respectively. Further, after the time axis compression processing is performed for each block, the audio data (R and L) of the right and left channels are multiplexed (FIG. 28).
(D)) (2 channels compressed on the time axis, 11.
Audio data having a period of 61 [msec] is called a sound group.

Further, the magneto-optical disk drive has a
One sound group forms a sound frame (FIG. 28 (C)), and one sound frame is allocated to two sectors (FIG. 28 (B)). Further, for 32 sectors to which audio data is allocated in this way, 3 sectors
Link sector L and one sub-sector S are added, and 36
One cluster is formed by sectors (FIG. 28A).
Here, the link sector L is a cluster connection sector to which predetermined data having no meaning is assigned instead of audio data, and the subsector S is a sector to which sub data is assigned.

As shown in a table format in FIG. 29, each sector is composed of 2352 bytes of data, and an area represented by vertical addresses "0" to "3" is allocated to a header. In this header, the area of the vertical addresses “0” to “2”, 12 bytes, is the synchronization pattern (sy).
nc), and the cluster address is assigned to the first and second bytes of the subsequent vertical address “3”. Subsequently, a sector address is assigned, and subsequently, the mode of the magneto-optical disk is recorded. Following this header, a main data area of 2336 bytes is formed, and time-axis-compressed audio data is allocated to this area in units of sound groups.

In this type of magneto-optical disk device, sequentially input audio data is sequentially allocated to clusters as described above, and the audio data is sequentially recorded in an unrecorded area in units of the cluster, and an erasable area is recorded. The audio data is sequentially overwritten and recorded. At this time, if it becomes difficult to record a series of audio data in one continuous area, the remaining audio data is recorded in other recordable areas or erasable areas in cluster units.

For recording audio data in cluster units as described above, a recording area is formed in the magneto-optical disk on the inner peripheral side of the magneto-optical disk, and the audio data is managed by the management data recorded in this management area. I do.

That is, in the magneto-optical disk, UTOC data is assigned to the management data, and when the magneto-optical disk device is loaded, the UTO data is transferred to the magneto-optical disk device.
When there is a UTOC rewrite request, such as when the C data is accessed and the power is turned off or the magneto-optical disk is ejected,
This UTOC data is rewritten as necessary.

In the UTOC data, the first to fourth sectors are set in units of sectors as in the case of the audio data, and the second to fourth sectors are set as options. As shown in FIG. 30, the first sector (that is, sector 0) has a cluster address assigned after the header, and then the data of 00h, the manufacturer of the recording device, and the model of the recording device. Code (Maker code, Model code), start number and end number of recorded program (First TNO, Last TN)
O) etc. are assigned.

The first sector is followed by disc identification data (DISC.ID) and a pointer (Pointer for Defect) indicating the head slot of the defective area in the program area.
iveArea: P-DFA), for the later-described slots, a pointer (Pointer for En
pty Slot: P-EMPTY), a pointer (Pointer for Freely Are) indicating the first slot of the recordable area in the program area
a: P-FRA) is assigned.

Subsequently, pointers (P-TNO1,..., P-
TNO255) is allocated, and in the area below the vertical address “76”, the area is allocated to a slot in units of 8 bytes. Here, each slot has a start address (Star
t address), an end address (End address), mode data (Track mode), and a link pointer (Link-P) are recorded.

The pointers (P-TNO1,..., P-TNO255)
The address of the corresponding slot is specified corresponding to the music recorded on the magneto-optical disk. Start address (Star
t address) and end address (End address) specify the recording start position and recording end position of continuous audio data by using a cluster address, a sector address, and a sound group (hereinafter, this start address (Star address)).
t address) and a recording unit designated by an end address (End address) is called a part). Link pointer (Li
nk-P) specifies a slot corresponding to a subsequent audio signal (that is, a subsequent part) when a continuous audio signal is divided and recorded in another area of the magneto-optical disk. The mode data (Track mode)
The mode of each part is recorded, and identification data such as copy prohibition / permission and audio data / computer data is recorded.

As shown in FIG. 31, for example, in the case of a magneto-optical disk, when audio data is first recorded on a magneto-optical disk on which no audio data is recorded, a pointer (P) indicating the head position of a recordable area is recorded. -FR
According to the designation of A), the parts P1, P2, P corresponding to each performance are so arranged that the performance of the first music, the second music,...
3, P4 is formed and audio data is recorded. Corresponding to this, each part P1, P2, P3, P
4 are sequentially recorded in each slot, and the pointers P-TNO1, P-TNO2, P-TNO
3. P-TNO4 specifies the slot for each performance.

In the case where the second piece of audio data recorded continuously in such a manner is erased, the slot corresponding to the program to be erased is linked by the pointer P-FRA in the magneto-optical disk drive. Link to the last slot. That is, in the pointer (P-FRA), a slot corresponding to the pointer (P-FRA, P-TNO1,..., P-TNO255) is designated similarly to the pointer (P-FRA, P-TNO1,..., P-TNO255). When the second and fourth songs are deleted, the pointer (P-TNO1,
P-TNO2,...) Are rewritten so that the slot pointers corresponding to the parts P2 and P4 can be sequentially traced from the link pointer of the last slot specified by the pointer P-FRA.

This linking operation is realized by pointing the link managing the second and fourth songs to be erased with the link pointer of the last slot of the recordable area. That is, at the stage before erasure, the link pointer LINK-P
Null data is recorded in the link pointer of the last slot that has been traced, and the linking operation rewrites this Null data so as to indicate the slot corresponding to the second song, and further links the slot corresponding to the second song. The pointer is rewritten so as to point to the slot corresponding to the fourth music piece to be erased, and Null data is recorded in the link pointer of the slot corresponding to the fourth music piece. The fact that Null data is recorded in the link pointer means that there is no subsequent link slot.

Thus, in a magneto-optical disk drive,
In this manner, audio data is recorded in units of clusters, and the recorded audio data is managed by UTOC, so that even if recording and erasing processing is repeated, the UTOC is rewritten in accordance with this processing to continue the recording. Audio data can be recorded discretely, and audio data recorded discretely can be reproduced, so that the program area of the spectral magnetic disk can be used effectively.

On the other hand, at the time of editing, the magneto-optical disk drive rewrites the pointers (P-TNO1, P-TNO2,...) Or uses each pointer (P-TNO1, P-TNO2,. By rewriting each designated slot,
Change the playing order of audio data recorded on the magneto-optical disk.

As shown in FIG. 31, the part P1 of the first music
Is divided into two pieces of music, and the start address of the slot indicated by the corresponding pointer P-TNO1 of the part P1 is not changed, and the end address of this slot is changed to the end of the part P1. The address is changed from the address S2 to the end address S3 of the first half part P12. Since the link pointer of this slot has no slot to be linked, Null data is recorded.

The start address of the slot indicated by the pointer P-TNO2 corresponding to the second half part P12 to be further divided is changed from the address S2 to the address S3, and the end address is changed from the address S4 to the address S3. Since the link pointer has no subsequent slot, Null data is recorded.

In this example, before editing,
Since only the second song is recorded, the third pointer
Although the P-TNO3 does not indicate a special slot, the third pointer P-TNO3 indicates a new slot after the division processing.
TNO3 is edited, and the address S2 is recorded at the start address of the slot indicated by the third pointer P-TNO3 and the address S4 is recorded at the end address. Since there is no subsequent slot in the link pointer, Null data is recorded. In this way, it is possible to execute the editing process of dividing the music by rewriting the U-TOC.

In the example shown in FIG. 32, the start address and the end address of the slot pointed to by the second pointer P-TNO2 are equal to the start address and the end address of the edited third tune. The third pointer P-TNO3 points to the slot pointed to by the second pointer P-TNO2, and the second pointer P-TN0
O2 may be edited so as to further point to a new slot, and the address S3 and the end address S2 may be recorded as the start address of the slot newly designated by the second pointer P-TNO2. At this time, naturally, the start address of the slot pointed to by the first pointer P-TNO1 is not changed, and the end address is changed to the address S2.
Needless to say, the address is changed to the address S3.

Thus, in the magneto-optical disk device, audio data can be easily edited in units of sound grooves by a simple process of rewriting UTOC.

[0023]

However, as described above, U
The editing process that can be managed and executed by the TOC is to edit audio data of two channels consisting of right and left channels,
At the same time, processing such as rearrangement in units of sound grooves is performed. Thus, in the conventional magneto-optical disk device, when editing between channels, it is necessary to extend the time axis of the reproduced audio data, perform the editing process, and then record again.

Such an editing process between channels is called U
Like the editing process managed and executed by the TOC, if it can be easily executed, it is considered that the usability of this type of magneto-optical disk device can be further improved. It would be convenient if the number of editable channels could be further increased and the audio data could be edited in multiple channels. Further, at this time, if the audio data having a shorter length than the cluster unit having the data writing unit length can be edited, the expressible range of the editing can be expanded, which is considered to be convenient.

The present invention has been made in view of the above points, and it is an object of the present invention to propose an editing apparatus which can easily edit short data having a data unit length or less between a plurality of channels.

[0026]

According to the present invention, there is provided a recording medium having a data writing unit having a predetermined length, wherein a channel unit data length is shorter than the data writing unit length on a recording medium having a predetermined length. Assuming that a plurality of channel data is recorded in a time-division multiplexed manner, the plurality of channel data relating to the editing range is reproduced from this recording medium, and the plurality of channel data of the editing source and the plurality of channel data of the editing destination are respectively read The first specific channel data is stored in the first and second storage units, and the first specific channel data is read from the first storage unit and overwritten from the corresponding position of the second specific channel data stored in the second storage unit. Thereafter, the multi-channel data stored in the second storage means is recorded again in a location on the storage medium which was located before editing.

If the reproduced plural channel data of the editing source and the edited destination are stored in the first and second storage means, and the specific channel data of the plural channel data is processed on the storage means, the data writing unit becomes Even when a plurality of channel data having a channel unit data length shorter than the data write unit length is recorded in a time-division multiplexed manner on a recording medium determined to have a predetermined length, this processing causes the Specific channel data can be edited. Therefore, the multi-channel data of the editing destination stored in the storage means can be recorded again at the location on the storage medium which was located before the editing, and the multi-channel data recorded on the recording medium can be easily edited.

[0028]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(1) Overall Configuration FIG. 2 is a perspective view showing a magneto-optical disk according to an embodiment of the present invention. This magneto-optical disk drive 1 has an arrow A
As shown in the figure, the disk cassette 3 is inserted from the disk insertion slot 2 arranged on the side surface.
The audio signal is recorded on the magneto-optical disk held in the optical disk, and the audio signal recorded on the magneto-optical disk is edited and reproduced.

Here, in the magneto-optical disk applied to the magneto-optical disk device 1, a pre-groove for guiding a laser beam is formed in a meandering manner on an information recording surface, and a predetermined rotation is performed based on the meandering frequency. It can be driven to rotate at a speed, and can detect the address of the laser beam irradiation position. The information recording surface is divided into concentric circles, and the outer peripheral side is assigned to a program area for recording audio signals, and the inner peripheral side is assigned to a management area. In the magneto-optical disk, a PTOC (Pre-mastered Table of
Content) and management data consisting of UTOC are recorded. The magneto-optical disk is formed so that the UTOC area can be accessed based on the PTOC data, and the UTOC is formed in the format described above with reference to FIG.

The upper surface of the magneto-optical disk device 1 is set to an operation panel, and an audio signal of at least one channel is input through a connector 4 arranged on the upper portion of the operation panel and recorded on the magneto-optical disk. And output the recorded audio signal. Further, in the magneto-optical disk device 1, a master operator 5 is arranged for each channel on the left side of the operation panel, and the volume and the like can be adjusted by operating these operators 5.

In the magneto-optical disk drive 1, various controls 7 are arranged next to the controls 5, a jog dial 8 is provided below the controls 7, and a display panel 9 is provided above the controls 7. For example, the user can operate the jog dial 8 while checking the display on the display panel 9 to set an in point, an out point, and the like. An operation unit 10 for reproduction or the like is arranged adjacent to the jog dial 8 so that the operation unit 10 can be operated to record and reproduce an audio signal.

In the magneto-optical disk drive 1, one of the operators 7 used for setting the in-point and the like is set as an undo (Undo) or a redo (Redo) operator. The operator can repeatedly press the operator to execute the ANDO and REDO processes.

FIG. 3 shows the operator 7 of the Ando and Rido.
FIG. 4A is a plan view showing the operation element 7A. On the upper surface of the operation element 7A pressed by a finger, a display of "UNDO" indicating the function of the operation element is formed, and a window 7B is formed in the upper left corner. Here, the window 7B can be illuminated in green by a light emitting diode arranged inside. In the magneto-optical disk device 1, the window 7B can be illuminated as necessary to transmit various information to the user. Has been made.

FIG. 4 is a block diagram showing the configuration of the digital signal processing unit of the magneto-optical disk device 1. In this magneto-optical disk drive 1, an analog-to-digital conversion circuit (A / D) 12 performs analog-to-digital conversion processing on audio signals SA1 to SA4 of up to four channels input from the connector 4 at a predetermined sampling frequency, and outputs a digital audio signal. Is output.

The data compression circuit 13 time-divides the digital audio signal output from the analog-to-digital conversion circuit 12 into blocks at a period of 11.61 [msec], and performs data compression processing on the digital audio signal for each block. .

The time correction circuit 14 includes the system control circuit 1
5, the digital audio signal output from the data compression circuit 13 is converted into one digital audio signal DA1 and output to the data bus BUS.

The procedure for processing an audio signal in units of one cluster will be described below. As shown in FIG. 5, the time correction circuit 14 includes four channels of audio signals SA1 to SA4 input from the connector 4 (FIG. 5 (A1) to (A1)).
When recording 4)), the digital audio signal DA1 (FIG. 5B) is formed by sequentially and cyclically time-division multiplexing each block having a period of 11.61 [msec].

In this case, in the magneto-optical disk device 1, one sound group is formed by two consecutive blocks of the digital audio signal DA1 (FIG. 5).
(C)), eleven consecutive sound groups are allocated to two sectors (FIG. 5 (D)). Also, three clusters L and sub-sectors S are added before and after 32 consecutive sectors to form one cluster (FIG. 5E). In this case, a sound frame is formed by 22 sound groups.

On the other hand, as shown in FIG. 6, the time correction circuit 14 includes two-channel audio signals SA1 to SA.
Similarly, when recording A2 (FIGS. 6 (A1) to 6 (A2)), similarly, each block having a period of 11.61 [msec] is sequentially and cyclically time-division multiplexed and the digital audio signal DA is recorded.
1 (FIG. 6B).

In this case, in the magneto-optical disk device 1, as in the case of four channels, one sound group is formed by two consecutive blocks (FIG. 6 (C)).
Sound group is assigned to two sectors (Fig. 6
(D)). Also, a link sector L and a sub-sector S are added before and after 32 consecutive sectors to form one cluster (FIG. 6).
(E)) is formed. Note that, in this case, the sound frame is similar to the stereo case described above with reference to FIG.
It is formed by 11 sound groups.

On the other hand, as shown in FIG. 7, when recording the audio signal SA1 of one channel (FIG. 7A), the time correction circuit 14 sequentially processes each block of 11.61 [msec] cycle. The digital audio signal DA1 (FIG. 7B) is formed by time arrangement.

Also in this case, in the magneto-optical disk device 1, 4
As in the case of the channel, one sound group is formed by two consecutive blocks, and 11 sound groups are assigned to two sectors (FIG. 7C). A link sector L and a subsector S are added before and after 32 consecutive sectors to form one cluster (FIG. 7D). Also in this case, the sound frame is formed by 11 sound groups, as in the case of the stereo described above with reference to FIG. The number of channels is U
The mode data (TR) assigned to each slot of the TOC
ACK MODE) is set by the system control circuit 15 and recorded on the magneto-optical disk.

At the time of reproduction, the time correction circuit 14 is controlled by the system control circuit 15 to sequentially record the digital audio signal DA1 input from the data bus BUS in accordance with the format of the audio signal recorded on the magneto-optical disk. Conversely demodulates and outputs the original digital audio signal.

The data decompression circuit 18 is a data compression circuit 1
Contrary to 3, during data reproduction, the data-compressed digital audio signal output from the time correction circuit 14 is decompressed and output. Digital-to-analog conversion circuit (D /
A) 19 performs digital-to-analog conversion processing on the digital audio signal output from the data decompression circuit 18,
The audio signals SA1 to SA4 are output.

The memory 20 is formed of a large-capacity memory circuit that operates under the control of the memory control circuit 21, and receives the digital audio signal DA1 output from the time correction circuit 14 via the data bus BUS during recording. And hold. Further, the memory 20 includes a memory control circuit 21
, The link sector L, the subsector S, the header of each sector, the cluster address, etc. are stored. With this, these data are added to the digital audio signal DA1 to record the cluster data described above with reference to FIGS. To form The memory 20 outputs the recording data to the data bus BUS in cluster units at a timing synchronized with the rotation of the magneto-optical disk.

At the time of reproduction, the memory 20 stores the data bus BUS
, The decoded data output from the signal processing circuit 23 is input in cluster units and temporarily stored. Further, extra data such as a header is removed from the decoded data to output a digital audio signal DA1.

At the time of editing, the memory 20 stores the memory control circuit 2
Under the control of 1, the decoded data output from the signal processing circuit 23 is input and temporarily stored in cluster units. Further, the digital audio signal D
The temporarily held decoded data is processed by switching the address in units of A1 blocks and updating the data with the data output from the memory control circuit 21. Further, the memory 20 outputs the temporarily held decoded data to the signal processing circuit 23 via the data bus BUS.

The disk unit 22 drives the magneto-optical disk accommodated in the disk cassette 3 to rotate, and irradiates a laser beam from the optical pickup in this state. Further, the disk unit 22 receives the return light of the laser beam by the optical pickup, and based on the reception result, rotationally drives the magneto-optical disk at a predetermined rotation speed with reference to the pre-groove of the magneto-optical disk. Detect the address of

Further, the disk unit 22 performs tracking control and focus control based on the result of receiving the return light, and moves the optical pickup to the recording / reproducing position specified by the system control circuit 15 based on the address of the laser beam irradiation position. Seek. With this seek, the disk unit 22 accesses the PTOC and UTOC when loading and unloading the magneto-optical disk, and accesses the program area during recording / reproduction, editing, and so on.

Further, the disk unit 22 generates a reproduction signal whose signal level changes in accordance with the change in the deflection surface of the return light, and generates a binary signal from this reproduction signal. Further, the disk unit 22 generates a reproduced clock from the binarized signal, and sequentially latches the binarized signal with the reproduced clock to generate reproduced data.

At the time of recording, the disk unit 22 is positioned at the recording / reproducing position specified by the system control circuit 15 and
Raises the amount of laser beam intermittently. In this state, the disk unit 22 drives the modulation coil with the modulation data output from the signal processing circuit 23, and applies the modulation magnetic field generated by the modulation coil to the laser beam irradiation position. As a result, the disk unit 22
Modulation data is recorded by applying a thermomagnetic recording technique.

At the time of editing, the disk unit 22 repeats the above-described processing at the time of reproduction and the processing at the time of recording as necessary, thereby reproducing the reproduced data by the signal processing circuit 23.
And the modulated data output from the signal processing circuit 23 is recorded on a magneto-optical disk.

The signal processing circuit 23 includes the disk unit 2
After decoding the reproduction data output from the reproduction data 2 and performing error correction processing, PTOC and UTOC are obtained from the reproduction data.
And demodulated data are generated and output to the data bus BUS. On the other hand, at the time of recording, the signal processing circuit 23 performs an encoding process after adding an error correction code to the recording data output to the data bus BUS, as opposed to at the time of reproduction, thereby generating modulated data. To the disk unit 22. Further, at the time of editing, the above-described processing at the time of reproduction and processing at the time of recording are repeated as necessary, thereby outputting decoded data to the memory 20 and generating modulated data from the recorded data output from the memory 20. And output.

The TOC memory 24 stores the PTOC and UT output from the signal processing circuit 23 when a magneto-optical disk is loaded.
The OC data is input and held, and the held data is output to the system control circuit 15 as needed. At the time of recording and editing, the data held by the system control circuit 15 is output to the system control circuit 15 at the request thereof, and the held data is updated. Further, when the magneto-optical disk is ejected, the TOC memory 24 outputs the held UTOC data to the signal processing circuit 23, and updates the UTOC of the magneto-optical disk with the UTOC data.

The system control circuit 15 is constituted by a microcomputer for controlling the operation of the entire magneto-optical disk device 1, and switches the overall operation in response to the operation of the operators 5, 7, 8, and 10. The display on the display panel 9 is switched.

That is, when the disk cassette is loaded, the system control circuit 15 drives the disk unit 22 to load the PTOC data into the TOC memory 24. Further, the PTOC loaded into the TOC memory 24
Then, the disk unit 22 is driven in accordance with the data of (1), and the following UTOC data is loaded into the TOC memory 24.

In this state, when the operator is operated to set the recording mode, the start address and the end address of the recordable area are sequentially detected by sequentially following the slots by the pointer (P-FRA) of the UTOC. The disk unit 22 is driven by the start address and the end address. Further, the system control circuit 15 sequentially accesses the recordable area of the magneto-optical disk by setting the operation of the time correction circuit 14 and the like to the operation mode at the time of recording, and transfers the sequentially input audio signals to the magneto-optical disk. Record. At this time, the system control circuit 15 drives the display panel 9 to display the recording time, the remaining recordable time, and the like.

When the recording of one audio signal is completed, the system control circuit 15 updates the UTOC data stored in the TOC memory 24. That is, the pointer (P-TNO1,..., P-TNO255) and the corresponding slot are updated with respect to the part in which the audio signal of this music has been recorded, thereby registering the audio signal of this music in the UTOC. Also, the pointer (P-FRA) indicating the recordable area is updated, and the part that records the audio signal is thereby deleted from the recordable area.

On the other hand, when the reproduction mode is set,
By sequentially following the slots specified by the pointers (P-TNO1,..., P-TNO255), the start address and end address of the corresponding slots are sequentially detected, and the disk unit 22 is driven by the detected addresses. Further, the system control circuit 15 sets the operation of the time correction circuit 14 and the like to the operation mode at the time of reproduction, thereby sequentially reproducing the audio signals recorded on the magneto-optical disk and outputting the signals to the external device.

At this time, the system control circuit 15
From the UTOC data stored in the memory 24, a predetermined U
In accordance with the contents recorded in the TOC, the title of the song to be played, the song number, the playback time, and the like are displayed on the display panel 9, and the song or channel specified by the user is selectively played back.

Further, the system control circuit 15 accepts the operation of the jog dial 8 and the operation of the operation element 7 by the user to set the edit points such as the IN point and the OUT point.
When reproduction by the edit point is instructed, the audio signal specified by the edit point is selectively reproduced.

(1-1) Editing Process When the user selects the editing operation mode, the system control circuit 15 responds to the user's operation by editing the song unit, editing a part of the song, and changing the channel. Execute the editing process.

The song-by-song editing process is a so-called UTOC editing process that is executed in units of UTOC pointers (P-TNO1,..., P-TNO255). Executed when is selected. In the editing process for each music piece, the system control circuit 15
In response to a user's selection operation, processing of copy, move, exchange, delete, combine, or split is executed.

As shown in FIG. 8, the copying process is a process of copying a song selected by a user to a recordable area of a magneto-optical disk. When a song is designated, the system control circuit 15 executes a TOC memory operation. 24, the start address S1 and the end address E1 of the song as the copy source are detected from the corresponding pointer (P-TNO1) (FIG. 8).
(A)). Further, the system control circuit 15 drives the disk unit 22 based on the start address S1 and the end address E1, and reproduces the magneto-optical disk in cluster units within a range that can be stored in the memory 20,
The demodulated data obtained from the signal processing circuit 23 is stored in the memory 20
To be stored.

The system control circuit 15 has a pointer (P-FR
A), a recordable area is detected, and the demodulated data held in the memory 20 is recorded in the copy destination based on the copy destination address S3 (FIG. 8B). The system control circuit 15 repeats the reproduction and recording processes for the music specified by the user, and in this case, copies the first music as the third music. Here, if the capacity of the memory 20 is sufficient compared to the data amount of the music to be copied,
No repetition of recording is required.

Subsequently, the system control circuit 15 accesses the TOC memory 24 and registers the start address S3 and the end address E3 of the third piece of music in the slot specified by the pointer (P-TNO3).

As shown in FIG. 9, the movement process is a process of moving the position of the designated music. When the music is designated, the system control circuit 15 accesses the TOC memory 24 to designate the designated music. Song pointer (P-TNOX: (X = 1-25
Rewrite the address of the part specified by 5)).
That is, the first, second, and third pointers P-TNO1, P-TNO2,
When the first, second, and third slots are sequentially designated by P-TNO3 (FIG. 9A), the first, second, and third pointers P-TNO1, P-TNO2, and P-TNO3 , The addresses are rewritten so as to designate the second, third, and first slots, and the order of the music pieces is changed (FIG. 9B). It should be noted here that the slot number recorded in the pointer P-TNO is rewritten without rewriting the contents of the slot such as the start address, end address and link data.

As shown in FIG. 10, the exchange process is a process of exchanging designated music (see FIG. 10).
(A) and (B)), the system control circuit 15 sets a pointer (P-TN
OX: (X = 1 to 255)) to rewrite the address of the part specified by the instruction and change the order of the music pieces. In the case of FIG. 10, the exchange process is executed by rewriting the slot number designated by the first pointer P-TNO1 and the slot number designated by the third pointer P-TNO3. .

As shown in FIG. 11, the erasing process is as follows.
In the process of erasing the designated music, the system control circuit 15
Performs a process opposite to the update process of the TOC memory 24 executed in the copy for the specified music piece.

That is, the system control circuit 15
Accessing the memory 24, the pointer (P-TNO1,..., P-TNO255) for specifying the part of the first music (consisting of the start address S1 and the end address E1) is released, and the specification of the part is released. Recordable area pointer (P-
The start address S
1. Add a slot consisting of the end address E1.

As shown in FIG. 12, the combine process is a process of combining specified songs (FIGS. 12A and 12B). In this case, the system control circuit 15 sends the first and second songs. Is specified, the TOC memory 24 is accessed, and an address for specifying the slot of the second music is set in the link pointer LINK-P of the slot specified by the pointer P-TNO1 of the first music. Pointer for the second song
This pointer P-TNO2 is updated so that P-TNO2 specifies the slot specified by pointer P-TNO3.

Further, as shown in FIG.
In the process of dividing one song into a plurality of songs, when the first song is designated in this case, the system control circuit 15 accesses the TOC memory 24 and operates the jog dial 8 to input the first song slot. The address of the edited edit point is updated as the end address E11. Further, the slot number recorded in the pointer P-TNO3 corresponding to the third track is copied to the pointer P-TNO4 corresponding to the fourth track, and the slot number recorded in the pointer P-TMO2 corresponding to the second track. Is copied to the pointer PTNO3 corresponding to the third song.

Further, a pointer P-TNO2 corresponding to the second music piece
Is rewritten so as to point to the empty slot indicated by the pointer P-EMPTY, and the start address S1 following the end address E11 of the part generated in the division processing.
1. End address E corresponding to this start address
1 is recorded in the start address and end address of the empty slot up to that point specified by the pointer P-TNO2. Although the above-described processing has been described with respect to a case where the processing is performed in units of one music piece, it is also possible to perform various kinds of editing processing on a part of a finer music piece.

The editing process for a part of the music is performed by a so-called UTO for editing an audio signal in units of a sound group which is a recording unit on a magneto-optical disk.
C editing processing. This is executed when the user selects the edit mode by setting the IN point IN, the OUT point OUT, and the like in a single song in units of sound groups. The system control circuit 15 executes insert, move, exchange, or delete processing in response to a user's selection operation.

Here, as shown in FIG. 14, the insert process is a process of inserting a new performance separately into one music. In this case, the system control circuit 15 operates the jog dial 8 in advance to Processing point DES indicating insertion position
The designation of T is accepted, and the performance to be inserted is recorded in the recordable area of the magneto-optical disk in advance. The system control circuit 15 forms the part P2 based on the performance recorded on the magneto-optical disk in advance, and divides the part P1 of one piece of music into two parts P11 and P12 at the processing point DEST. The contents of the memory 24 are updated. Further, the link pointer corresponding to the parts P11 and P2 is updated so that the parts P11, P2 and P12 can be sequentially traced.

Here, the slot corresponding to the part P11 manages the start address S1 and the end address E1, and the link pointer of this slot is set so as to point to the slot corresponding to the part P2.
Further, the slot corresponding to the part P2 manages the start address S3 and the end address E3, and the link pointer of this slot is set so as to point to the slot corresponding to the part P12. Further parts P1
The slot corresponding to No. 2 manages the start address S2 and the end address E2, and Null is recorded in the link pointer of this slot. In FIG. 14, although it appears that the part P12 is shifted in recording due to the insertion of the part 2, it is actually physically simply U
-The TOC information is only rewritten as described above.

The movement process is performed as shown in FIG.
In this process, a part of the music is cut out and moved in the music. In this case, the system control circuit 15 operates the jog dial 8 in advance to control the IN point IN and the OUT point OUT,
The designation of the processing point DEST indicating the destination is accepted. The system control circuit 15 divides one music part into four parts P with the in-point IN, the out-point OUT, and the processing point DEST as boundaries.
1, the parts are divided into P2, P3, and P4, and each part is registered in the TOC memory 24. In addition, IN point IN and OUT point OU
A link pointer is set between the parts so that the parts between T are reproduced following the processing point DEST.

The exchange process is a process of exchanging parts in one music piece as shown in FIG. 16. In this case as well, the system control circuit 15 updates the contents of the TOC memory 24 as in the case of movement. Then, the exchange process is executed.

The erasing process is performed as shown in FIG.
In the process of erasing a part of one music piece, the system control circuit 15 also receives in advance the designation of the IN point IN and the OUT point OUT indicating the erasing start position and the ending position. The system control circuit 15 determines that the IN point IN and the OUT point O
3 parts P1 and P
2 and P3, and each part is registered in the TOC memory 24. Further, for a part between the IN point IN and the OUT point OUT, a link pointer of a corresponding packet is set so that the part can be traced with a pointer (P-FRA) indicating a recordable area, and IN and OUT are set at the IN point. A link pointer is set between the parts P1 and P3 so that the parts between the points OUT are omitted and reproduced. Note that in FIG. 17, the part P3 is schematically described as being shifted in recording, but in practice, the part P2 is only registered in the pointer P-FRA as a free area.

(1-2) Editing Process Between Channels The editing process between channels is performed when a 4-channel audio signal is recorded on a magneto-optical disk.
This is editing processing executed between audio signals of channels at a time interval of a sound group unit, and a user sets an IN point IN, an OUT point OUT, and the like in one music piece or between music pieces in sound group units. This is executed when the editing mode is selected. This editing process is executed, for example, when a performance by an individual musical instrument is assigned to each channel, and a part of each performance is repeated, replaced, or added to another music piece.

Even when a two-channel audio signal is recorded on a magneto-optical disk, or when a one-channel audio signal is recorded, the editing process between the channels is performed on the four-channel audio signal recorded on the magneto-optical disk. The processing is performed in the same manner as when processing an audio signal.

As described above with reference to FIG. 5, when recording audio signals of four channels on a magneto-optical disk,
In the magneto-optical disk drive 1, the four-channel audio signals are time-division multiplexed to form a digital audio signal DA1.
Are sequentially and cyclically assigned to the sound groups. On the other hand, when recording an audio signal of two channels on a magneto-optical disk, the magneto-optical disk device 1 forms a digital audio signal DA1 by time-division multiplexing the audio signals of the two channels. Are sequentially and cyclically assigned to sound groups (FIG. 6). In the case where an audio signal of one channel is recorded on a magneto-optical disk, the magneto-optical disk device 1 performs time-division multiplexing on the magneto-optical disk.
The audio signal of the channel is divided into blocks to form a digital audio signal DA1, and each block of the digital audio signal DA1 is sequentially and cyclically assigned to a sound group (FIG. 7).

The magneto-optical disk device 1 executes editing processing between channels on the basis of recording audio signals of four channels on a magneto-optical disk. When a two-channel audio signal and a one-channel audio signal are recorded on a magneto-optical disk, a four-channel audio signal is recorded on the magneto-optical disk with respect to the time-division multiplexed or time-division digital audio signal DA1. In the same manner as in the case of the above, the editing process between the channels is executed, thereby improving the usability.

In the editing process between channels, the system control circuit 15 executes copy, move, exchange, or delete processing in response to a user's selection operation.

Here, in the editing process between channels,
When the user selects the copy or move mode, the system control circuit 15 executes the processing procedure shown in FIG. Here, the copy is a process of copying the audio signal between the IN point IN and the OUT point OUT of the channel specified by the user after the processing point DEST of the channel specified by the user, and the move is a process of copying the channel specified by the user. The audio signal between the IN point IN and OUT point OUT is processed by the processing point D of the channel specified by the user.
Copy below EST, and add IN point IN and OUT point O
This is a process of deleting a corresponding channel between UTs.

As described with reference to FIG. 5, a compressed audio signal is recorded on the disk from the inner circumference to the outer circumference in cluster units as shown in FIG. 19A. Each one cluster is composed of 36 sectors (FIG. 19 (B)), and a linking area L and sub-data S are allocated to the first four sectors.
The compressed main audio data is sub data S
Is recorded in 32 sectors after the sector No.

In each sector, 11 sound groups are recorded in pairs of two sectors (FIG. 19C), and two channel data can be recorded in one sound group. When considering four-channel recording,
The audio data of the channel is recorded on the disc in the form shown in FIG. Here, main audio data is allocated to 32 sectors in one cluster, so that 32 当 た り 2 × 11 (S
G) Data of ÷ 2 = 88 (in units of blocks / channels) can be recorded.

For ease of explanation in the future, here,
As shown in FIG. 19E, each channel data is described as a data string in the longitudinal direction, and the image is reproduced as if it were continuously reproduced in time series (so-called tape-shaped recording medium image).
FIG. Hereinafter, the description method of FIG. 19E is common to FIGS. 1, 20, 22, and 24.

The procedure for copying and moving between channels will be described below with reference to the flowchart of FIG. 18 and FIGS. 1 and 20. In point IN, which is the editing start point of the channel from which the user is editing, and OUT point OUT, which is the editing end point.
Is specified using a JOG dial or the like, the system control circuit 15 determines the start point and end point of the data stored in the memory 20 based on the specified edit point as follows.

The system control circuit 15 determines that the IN point IN, which is the editing start point specified by the user, is, for example, an address of 48 clusters, an address of 12 sectors, a second sound group (hereinafter referred to as a second sound group).
(Represented as (48,12,2)), the reference for reproducing audio data from the magneto-optical disk and storing it in the memory 20 is (48,12,2).
00, 01), the data from 48 clusters, 0 sector address, and 1st sound group is reproduced and stored in the memory 20. This depends on the fact that the unit of writing to the memory is a cluster unit.

Similarly, assuming that the out point OUT, which is the editing end point specified by the user, is, for example, the address of the 49th cluster, the address of the 11th sector, and the Ath sound group (hereinafter referred to as (48, 12, A)). Reference numeral 15 designates (49, 36, 0A) as a reference to be stored in the memory, and reproduces data up to 49 clusters, 36 sector addresses, and the A sound group and stores the data in the memory 20. Thus, in the case of this example, the memory 2
In 0, data for two clusters (corresponding to n clusters in FIG. 1A) is stored (SP2 and SP in FIG. 18).
3, see FIGS. 1A and 1B).

Next, the system control circuit 15 allows the user to specify the processing point DEST at the editing destination by using a JOG dial or the like, and to start and end the data to be stored in the memory 20 based on the specified processing point DEST. Points are determined as follows. Here, the setting of the start point and the end point depends on the data amount determined by the IN point IN as the editing start point of the designated editing source and the OUT point OUT as the editing end point.

That is, the previous end point 49 cluster address,
11 sector address, A sound group eyes and starting point 48
The system control circuit 15 determines a start point and an end point so that data for 0 cluster, 31 sector address, and 8 sound groups corresponding to the difference between the cluster address, the 12th sector address, and the second sound group can be secured.

Here, in the above example, since the amount of data from the start point to the end point of the editing source is less than one cluster, it seems that data for a maximum of one cluster should be stored in the memory 20. However, also in this case, since the writing unit of the magneto-optical disk is a cluster unit, for example, when the processing point DEST point is set near the end point of the cluster, the data must be stored up to the next cluster.

The system control circuit 15 can sufficiently secure the data amount determined by the IN point IN as the editing start point and the OUT point OUT as the editing end point with the processing point DEST at the center. Then, a read start cluster and a read end cluster of an editing destination are generated (corresponding to m clusters in FIG. 1A), and the magneto-optical disk is reproduced based on the read start cluster and the read end cluster, and the reproduced audio data Is stored in the memory 20 (SP4 and SP5 in FIG. 18, FIG. 1A,
(B)).

It should be noted that in the above processing, even if the user specifies a range of editing as data to be edited only for a specific channel, the audio data developed on the memory 20 is not changed by the user. The point is that data of other channels accompanying the specified specific channel is also included.

That is, in the recording apparatus according to this embodiment, the unit of writing audio data is determined as a cluster unit. Therefore, when editing audio data shorter than the cluster length, the short data of the editing source is temporarily stored in the memory 20. Store the entire cluster including. Further, editing of the short data stored in the memory 20 is performed in the memory 20, and after the editing is completed, the data is written to the magneto-optical disk in cluster units again.

For this reason, in the editing operation in the memory 20, the system control circuit 15 reads out from the memory 20 the data of the copy source channel designated by the user from among the data of the edit source stored in the memory 20, and Copy to the data of the copy destination channel (Fig. 1
8 SP6, see FIG. 1 (C)). After this copying process,
The m clusters are read from the memory 20 and overwritten on the original locations on the disk (SP7 in FIG. 18). By these processes, as a result, in the example of FIG. 1, it is understood that only the data of the channel 3 is rewritten to the data of the channel 1 to be edited, and the other channel data is not changed at all. (FIG. 1).

In the copying process, the editing source data is only read out and not written, but in addition to this, by deleting the editing source data, the moving process can be executed.

In step SP8 of FIG. 18, the system control circuit 15 determines whether the instruction from the user is a copy process or a move process, and if it is a copy process, whether all editing work has been completed in step SP9. Is determined.

In step SP8 of FIG. 18, if the instruction from the user is a movement process, the system control circuit 15 determines in step SP11 the in-point IN, which is the editing start point, and the editing end point on the memory 20. A certain out point OU
By replacing all data at the portion corresponding to T (the hatched portion in FIG. 20C) with Null data, silence is achieved,
In step SP12, recording is resumed at the original recording position (FIGS. 20A to 20D).

If the amount of data determined by the specified editing source IN point IN, which is the editing start point, and the OUT point OUT, which is the editing end point, far exceeds the capacity of the memory 20, or in the case of copy processing, , System control circuit 15
Is SP2-SP3-SP4-SP5-SP6 of FIG.
The processing of -SP7-SP8-SP9 is sequentially repeated until the copy processing is completed for all clusters.

In the above description, the editing process for the data of four channels has been described. However, the data of the editing source and the editing destination for the audio signals of two channels and one channel are also stored in the memory 20 in cluster units. Accumulate,
Actual editing is performed in units of sound groups in the memory 20, and the same editing process can be performed by recording again in cluster units after the editing process.

The procedure for performing the exchange processing between channels will be described below with reference to the flowchart of FIG. 21 and the schematic diagram of FIG.

When the user designates, using the JOG dial or the like, an IN point IN as an editing start point and an OUT point OUT as an editing end point as the first channel data, the system control circuit 15 causes the designated editing. The start point and the end point of the data stored in the memory 20 are set based on the point. Further, a start point and an end point to be read out on the recording medium are determined based on the set in point IN as the editing start point and the out point OUT as the editing end point,
The audio data is reproduced and stored in the memory 20. At this time, the memory 20 stores not only the first channel data but also the multiplexed second to fourth channel data (steps SP22 and SP22 in FIG. 21).
23, FIGS. 22 (A) and (B)).

Next, when the user designates the processing point DEST as the third channel data by using a JOG dial or the like, the system control circuit 15 sends the designated processing point DES
The start point and the end point of the data stored in the memory 20 are set as follows based on T. Here, in setting the start point and the end point, the system control circuit 15 sets the in-point IN, which is the editing start point, and the out-point OUT, which is the editing end point, of the specified first channel data as the editing source.
Area equal to the data amount determined by the memory 20
To secure. Note that the data area secured on the memory 20 depends on the position of the processing point DEST.

Subsequently, the system control circuit 15 sets the processing point D
The start point and the end point to be read on the recording medium are determined based on the position of the EST, and the audio data is reproduced and stored in the memory 20. At this time, the memory 20 stores not only the first channel data but also the multiplexed second to fourth channel data (steps SP24 and SP25 in FIG. 21 and FIG. 22B).

The system control circuit 15 uses the memory 20
Out of the first channel data stored in the memory 20, data of a desired channel designated by the user is read out from the memory 20 and saved in a first register (not shown),
Similarly, the third channel data is saved from the memory to a second register (not shown). Further, as shown in FIG. 22C, an exchange process is performed on the memory 20 using the saved data (SP26 in FIG. 21 and FIG. 22).
(C)).

After the exchange processing on the memory 20, the audio data corresponding to the first channel data is read from the memory 20 in cluster units and re-recorded at the original position. The audio data corresponding to the channel data is read in cluster units and re-recorded at the original position (SP27 in FIG. 22, FIG. 22).
(D)).

In FIG. 22 (D), although it appears that the recording operation is performed only on the hatched portion, in fact, all the channel data included in the same block is overwritten (the thick line in FIG. 22D). All parts enclosed by.) If the data amount determined by the IN point IN as the editing start point and the OUT point OUT as the editing end point of the first channel data set by the user far exceeds the capacity of the memory 20, the exchange processing is performed. Is
SP22-SP23-SP24-SP25-S in FIG.
The processing procedure of P26-SP27-SP28 is sequentially performed until the exchange processing is completed for all clusters.

In the above description, the editing process for data of four channels has been described. However, the data exchange process for the audio signals of two channels and one channel can be similarly realized in cluster units. Needless to say.

The procedure for performing the erasing process for a predetermined channel will be described below with reference to the flowchart of FIG. 23 and the schematic diagram of FIG.

The IN point IN, which is the editing start point, and the OUT point O, which is the editing end point, of the channel that the user wants to erase.
When the UT is designated by using a JOG dial or the like, the system control circuit 15 stores the data in the memory 20 based on the designated edit point.
The reproduction start point and the reproduction end point of the data to be stored in are set.

Further, a reproduction start point and a reproduction end point to be read out on the recording medium are determined based on the set editing start point IN point IN and editing end point OUT point OUT, and the audio data is reproduced. Stored in the memory 20 (steps SP32 and SP33 in FIG. 23, FIG. 24)
(A) and (B)). At this time, the memory 20 stores not only the first channel data designated to be erased but also the multiplexed second to fourth channel data.

The system control circuit 15 uses the memory 20
Nu of the desired channel data specified by the user among the first channel data stored in
11 is written (FIG. 24C and step SP34 in FIG. 28).

After the null data recording processing, the system control circuit 15 reads the audio data corresponding to the first channel data from the memory 20 in cluster units and re-records the audio data at the original position (step SP35 in FIG. 23).
And FIG. 29 (D)).

In FIG. 24 (D), it seems that the recording operation is performed only on the hatched portion, but in fact, all the channel data included in the same block is overwritten (FIG. 24 (D)). D) All parts surrounded by the thick line). Further, when the data amount determined by the IN point IN, which is the editing start point of the first channel data, which is the erasing range set by the user, and the OUT point OUT, which is the editing end point, far exceed the capacity of the memory 20. In FIG. 23, the system control circuit 15
The processing procedure of 2-SP33-SP34-SP35-SP36 is sequentially repeated until the exchange processing is completed for all clusters.

(1-3) Ando Process When the system control circuit 15 performs such various editing processes and then presses the Ando operator 7A shown in FIG. 3, the system control circuit 15 responds to the pressing operation. Repeat the process of Andou and Rido.

In the editing processing described above with reference to FIGS. 8 to 17, audio data is not overwritten on the magneto-optical disk, so the system control circuit 15 stores the data in the UTOC memory 24. The previously edited UTOC is temporarily saved in a save area provided in the UTOC memory 24, and the ANDO operator 7A
Is pressed, the saved UTOC before and after the editing is exchanged with the edited UTOC, thereby reproducing the immediately preceding state and executing the undo and redo processing.

In exchange processing between multi-channels, the exchange processing is repeated between the editing source and the editing destination, thereby executing the undo and redo processing.

On the other hand, in copying, moving, and erasing processes in multi-channel editing, since the audio signal recorded on the magneto-optical disk is lost by being overwritten, the system control circuit 15 The audio signal before editing is saved on the magneto-optical disk in cluster units in advance, the immediately preceding state is reproduced by the saved cluster, and the ANDO and REDO processes are executed.

At this time, when the user selects copy, move, or delete processing in editing between channels, the system control circuit 15 executes the processing procedure shown in FIG. 25 at a predetermined cycle to determine whether or not the undo processing can be performed in advance. Notify users.

That is, the system control circuit 15 proceeds from step SP41 to step SP42, and checks whether or not the capacity A of the saveable area exists on the magneto-optical disk.
Here, as shown in FIG. 26, the system control circuit 15
The TOC memory 24 is accessed, the slot is sequentially traced from the pointer (P-FRA) indicating the recordable area, the recordable area is searched, and the slot corresponding to the amount of data to be saved is selected.

Here, this saveable area is indicated by a pointer (P-
This is detected by following the slots indicated by the FRA) and indicating the recordable area, and expanding the recordable capacity of each slot on the UTOC memory (SP4 in FIG. 30).
3).

Subsequently, the system control circuit 15 proceeds to step SP44 and detects the number of sound groups of data lost by editing from the in-point IN and out-point OUT set by the user, thereby obtaining the capacity B of the editing setting area. Is detected.

Subsequently, the system control circuit 15 proceeds to step SP45, in which the system control circuit 15 determines whether or not the capacity A of the saveable area is larger than the data amount B corresponding to the sound group of the data to be lost by editing. If it is obtained, the data lost by editing in this case in the saveable area can be saved in units of sound groups.
The light emitting diode arranged in is turned on. As a result, the system control circuit 15 illuminates the window 7B of the operation element 7A in green and notifies the user that the undo process can be performed.

On the other hand, if a negative result is obtained in step SP45, the system control circuit 15 proceeds to step SP47 and turns off the light emitting diode arranged on the Ando operator 7A. Accordingly, the system control circuit 15 stops the illumination of the window 7B and notifies the user that the undo process cannot be performed.

Upon notifying the user in this way, the system control circuit 15 proceeds from step SP46 or step SP47 to step SP48, and ends this processing procedure. As a result, the user can confirm in advance whether or not the undo processing is possible and execute the editing processing, and the spectroscopic magnetic disk device 1 can appropriately execute the editing processing.

[0130] Note that the above-mentioned UTOC editing unit of music,
In the editing of a part (sound group unit) in a song, there is no audio signal lost by editing unlike the editing between channels, so that the system control circuit 1
5 always illuminates the window 7B of the operation element 7A in green to notify the user that the undo processing can be performed.
Thus, in the magneto-optical disk device 1, regardless of which editing process is selected by the user, it is possible to execute the undo and redo processes with the same operational feeling.

That is, the system control circuit 15 executes the processing procedure shown in FIG. 27 when the user sets the editing conditions and then operates the execution operator. Here, the system control circuit 15 performs steps SP51 to SP5.
The process proceeds to step SP53, where it is determined whether or not the capacity A of the saveable area is larger than the capacity B. If a positive result is obtained, the process proceeds to step SP53.

Here, the system control circuit 15 accesses the TOC memory 24 and rewrites the contents of the UTOC, thereby setting the previously saved audio signal part to the recordable area, if any. As a result, the system control circuit 15 executes processing corresponding to the case where the capacity of the saved audio signal is added to the capacity of the recordable area described above and set as the capacity A of the saveable area. The presence or absence of the evacuated audio signal is indicated by a pointer.
The determination is made by tracing the P-TNO to determine whether the backup flag is set in the track mode.

Subsequently, the system control circuit 15 proceeds to step SP54, where data lost by editing is recorded in the recordable area in units of sound groups (FIG. 26).
(A)). Here, the system control circuit 15 drives the disk unit 22 to output the IN point IN and the OUT point OUT.
The audio signal corresponding to the data amount between
The data is reproduced from T and stored in the memory 20, and the demodulated data stored in the memory 20 is recorded in a recordable area. Further, when the amount of data to be saved is larger than the capacity of the memory 20, the reproduction and recording processes are repeated to save the data lost by editing. Incidentally, in the erasing process, data between the in-point IN and the out-point OUT to be erased is saved instead of the data after the processing point DEST.

Further, the system control circuit 15 accesses the TOC memory 24 and sets the corresponding start address and end address in the slot specified by the pointer P-TNO designating the part that has saved the audio signal. At this time, the system control circuit 15 sets the backup flag of the mode data (TRACK MODE) to register that this slot is a slot in which the audio signal has been saved. By performing the above processing, when the user simply operates the playback operation element, the system control circuit 15 does not play back the part for which the backup flag is set, and further displays the part on the display panel 9. The entire operation is controlled so as not to display the song name, the song number, and the like, thereby preventing the user from recognizing the saved audio signal and preventing the user from being confused by the saved audio signal.

When all the lost data is saved in this way, the system control circuit 15 proceeds to step SP55 and executes the editing process set by the user (FIG. 26).
(B)), the process moves to step SP56 and the processing procedure ends. Thus, when the user operates the Ando operator 7A after completing this processing, the system control circuit 15 returns the editing destination and the editing source to the immediately preceding state by using the saved audio signal ( FIG.
(C)).

On the other hand, if a negative result is obtained in step SP52, the user knows that the undo process cannot be performed and operates the execution operator, so that the process directly proceeds from step SP52 to step SP55, and After performing the editing process without saving the signal, the process proceeds to step SP56.

Further, in the process of updating the UTOC when the disk cassette 3 is ejected and a write request is made, the system control circuit 15 sets a pointer (P-pointer) indicating a recordable area for a part for which a backup flag is set. After the TOC memory 24 is updated, the UTOC of the magneto-optical disk is updated so that it can be traced by the FRA) and it is difficult to trace by the pointer (P-TNO1,..., P-TNO255) specifying the music. Update.

(2) Operation of Embodiment In the above configuration, when the disk cassette 3 is loaded into the magneto-optical disk device 1, the disk unit 22 reproduces the management area of the magneto-optical disk, and the PTOC of this management area is reproduced. , UTOC are stored in the TOC memory 24.

Thereafter, when the magneto-optical disk drive 1 is set to the recording mode, the audio signals SA1 to SA4 input from the external device are converted to the analog-to-digital converter 1
After being converted into a digital audio signal in 2,
The data is input to the data compression circuit 13, where it is time-divided into 1
The data is divided into blocks in units of 1.61 [msec], and each block is time-axis-compressed by data compression processing.

The data-compressed digital audio signal is sequentially and cyclically time-division multiplexed in units of blocks in the subsequent time correction circuit 14, thereby generating a one-channel digital audio signal DA1. At this time, the audio signal SA of four channels
In the case of recording 1 to SA4, the digital audio signals of four channels that have been time-axis-compressed are sequentially and cyclically switched on a block-by-block basis to generate a digital audio signal DA1 (FIG. 5). When recording two-channel audio signals SA1 and SA2,
The time-axis-compressed two-channel digital audio signals are sequentially and alternately switched in units of blocks to generate a digital audio signal DA1 (FIG. 6). When recording a one-channel audio signal, a digital audio signal DA1 is generated from a one-channel audio signal obtained by simply time-divisionally compressing data (FIG. 7).

The digital audio signal DA1 generated in this manner is input to the memory 20 via the bus BUS.
One block is arranged to form two sound groups, and an address, a header, and the like are added to form a data structure of a sector. At this time, the digital audio signal DA1 is arranged so that two sectors are formed by the eleven sound groups. When one cluster of sectors is formed, the link sector, the subsector, and the subsector are synchronized with the rotation of the magneto-optical disk. The data is output to the signal processing circuit 23 as recording data together with data such as a header.

Here, the recording data is added with an error correction code, encoded, and converted into modulated data. A modulated magnetic field is generated by the modulated data, and the audio signals SA1 to SA4 are transferred to the magneto-optical disk by thermomagnetic recording. Be recorded.

[0143] The audio signal recorded on the magneto-optical disk in this way is stored in the UC stored in the TOC memory 24.
As the TOC is updated, the song name, song number, and the like are displayed on the display panel 9 in response to the user's operation.

At this time, in the magneto-optical disk device (FIG. 30), the mode data (TRACK MODE) is detected by the system control circuit 15 for the slot corresponding to the pointer (P-TNO1,..., P-TNO255). For audio signals for which the backup flag is set in the mode data (TRACK MODE), the display of the song name, song number, etc. is stopped. As a result, of the audio signals recorded on the magneto-optical disk, the saved audio signal with the backup flag set is held so that the user cannot recognize it, and confusion of the user is effectively avoided.

In this state, when the user selects a music and selects the reproduction mode, reproduction data is generated from a reproduction signal obtained from the magneto-optical disk, and the reproduction data is decoded in the signal processing circuit 23. The decoded data obtained by this decoding is temporarily stored in the memory 20, and the extra data such as the header is removed, and the decoded data is input to the time correction circuit 14 by the digital audio signal DA1.

Here, the digital audio signal DA1
Is converted into a digital audio signal of the original number of channels in reverse to the recording mode in accordance with the mode data (TRACK MODE), and is then subjected to data expansion in the subsequent data expansion circuit 18. Further, the digital audio signal whose data has been expanded is converted into an analog signal by the digital / analog conversion circuit 19 and output.

In the reproduction of the audio signal recorded on the magneto-optical disk, the audio signal for which the backup flag is set is left without being reproduced, whereby the retracted audio signal for which the backup flag is set is set. For, the user is prevented from listening, and confusion is effectively avoided.

On the other hand, when the user designates a song and selects the editing mode, an editing process is executed for each song, and the copying process is performed mainly by so-called UTOC editing for updating the UTOC stored in the TOC memory 24. , Move, exchange, delete, combine, and split (FIGS. 8 to 13).

If the user selects an editing mode by setting the IN point IN, OUT point OUT, and the like for each sound group in one song, the same UTOC editing is used to edit a portion of the song. Processing (edit processing for each sound group) is executed, and processing of insert, move, exchange, or delete selected by the user is executed (FIGS. 14 to 17).

In such editing processing for each music piece and each sound group, the UTOC at the start of editing is stored in the save area in the TOC memory 24, and after executing the editing processing, the subsequent editing processing is not performed. When the user operates the operator 7A of ANDO, the UTOC immediately before the start of the process is reproduced by the UTOC stored in the save area. As a result, the state immediately before the start of editing is reproduced in the reproduced UTOC, and the undo process is executed.

When the UTOC immediately before the start of the process is reproduced, the UTOC up to that time is stored in the save area, and when the user operates the ANDO operator 7A again, the UTOC stored in the save area is used for the editing process. UTOC is reproduced. As a result, the state after the editing process is reproduced in the reproduced UTOC, and the redrawing process is executed.

On the other hand, if the user selects the edit mode by setting the IN point IN, OUT point OUT, etc. in a single song or between songs in sound group units, the editing process between channels Is executed.

In this inter-channel editing process, when copying is designated, an audio signal of an editing destination, which is a copy destination after the processing point DEST, is reproduced from the magneto-optical disk by a predetermined amount in cluster units, and The audio signal of the editing source consisting of the audio signal between the IN point IN and the OUT point OUT is reproduced from the magneto-optical disk by the corresponding data amount and stored in the memory 20 (FIG. 1).

At this time, these audio signals are stored in the memory 20 in the sector structure recorded on the magneto-optical disk.
The audio signal of the channel specified by the user from the editing source is selected in units of sound groups, and the sector of the editing destination is updated by this audio signal. As a result, in the memory 20, the audio signal of the editing source is copied to the editing destination in units of sound groups between the channels, and the copied editing destination is recorded at the original recording position of the magneto-optical disk. At the editing source and the editing destination, the reproduction and recording processes are repeated as many times as necessary, and the IN point IN and the OUT point OUT
The audio signal in between is copied to the editing destination.

On the other hand, in the case of movement (FIG. 20), in addition to the update processing of the edit destination in this copy, the memory 20
Above, silent decoded data is recorded on the channel of the editing source. When recording the editing destination on a magneto-optical disk,
At the same time, the editing source is also recorded at the original recording position on the magneto-optical disk. As a result, in the magneto-optical disk, in the memory 20, the audio signal of the editing source is transferred to the editing destination in units of sound groups between channels, and the editing destination and the editing source are located at the original recording positions of the magneto-optical disk. Recording and reproduction are repeated as many times as necessary, and the audio signal between the IN point IN and the OUT point OUT is transferred to the editing destination.

On the other hand, in the case of an exchange (FIG. 2)
2) Instead of recording silence signals during movement, a memory 2
On 0, the audio signal of the editing destination is recorded at the editing source. As a result, in the magneto-optical disk, in the memory 20, the sound group is set in units of channels between channels.
After the audio signals of the editing source and the editing destination have been exchanged, the editing destination and the editing source are recorded at the original recording position of the magneto-optical disk, and the reproduction and recording processes are repeated as many times as necessary to obtain the IN point. The audio signal between IN and OUT point OUT is exchanged with the audio signal to be edited.

In the case of erasing (FIG. 27), only the original audio signal is reproduced from the magneto-optical disk and
0, and a silent signal is recorded on the memory 20 in the channel selected by the user. Further, the editing source is recorded in the original area of the magneto-optical disk, and the reproduction and recording processes are repeated as many times as necessary. As a result, a desired channel between the IN point IN and the OUT point OUT is deleted in units of sound groups.

By the editing process between the channels, the magneto-optical disk device 1 records the performances individually on, for example, four channels, and edits the performance parts by repeatedly recording the performance parts as necessary. Editing work or the like for exchanging parts can be executed, and editing work intended by the user can be easily executed accordingly.

In such an editing process between channels, when the in point IN and the out point OUT are set and the user selects the copying, moving, or erasing process, the system control circuit 15 performs this editing at regular intervals. The data amount B of the audio signal lost by the processing and the capacity A of the area where the audio signal can be saved are detected (FIG. 25). Further, according to the comparison result between the detected data amount B and the capacity A,
It is determined whether or not the audio signal lost by the editing process can be saved. If the audio signal can be saved, the Ando operator 7A
Is illuminated in green, and when it is difficult to evacuate, this illumination is turned off.

As a result, the magneto-optical disk device 1 notifies the user in advance whether or not the undo processing is possible and waits for the user's judgment. In other words, if it is difficult for users who need ANDO to perform ANDO,
After erasing unnecessary songs to increase the recordable area, the editing process can be continued again, so that the editing process can be appropriately continued. Also, for a user who does not need an undo, even if it is difficult to execute the undo, the editing work can be continued and the editing process can be appropriately continued.

In response to the user's selection, in the magneto-optical disk, when the user operates the editing execution operator, it is determined whether or not the audio signal lost by the editing process can be saved (FIG. 27). If possible, the audio signal lost by the editing is recorded in the save area in advance, and then the editing process is executed. If the evacuation is difficult, the editing process is executed directly.

When the audio signal is saved, the magneto-optical disk drive 1 sets a backup flag and registers the saved audio signal part in the UTOC, thereby discriminating it from other audio signals.
At the time of reproduction, confusion of the user in displaying the song name, the song number, and the like is effectively avoided.

When the audio signal is saved, the UT
By the operation of the OC, the previously saved audio signal is erased, thereby effectively preventing a reduction in the recordable area when the saving process is repeated.

Further, when the disk cassette 3 is ejected, when a write request is made, the evacuated audio signal parts are registered in the UTOC as recordable areas, whereby the disk cassette 3 is reproduced by another magneto-optical disk device. Even when recording, the saved audio signal is held so that the user does not recognize it at all.

(3) Effects of the Embodiment According to the above configuration, an audio signal to be edited is read from the magneto-optical disk in cluster units, which are data writing units, processed on a memory, and recorded in an editing destination. By doing so, when multiple channel data having a channel unit data length shorter than the data write unit length is recorded in a time-division multiplexed manner, even data shorter than the data unit length can be easily edited between the multiple channels. Can be.

(4) Other Embodiments In the above-described embodiment, a case has been described where editing processing between channels is executed by processing decoded data. However, the present invention is not limited to this, and may be applied to data editing. The present invention can be widely applied to a case where processing such as mixing is performed at the stage of expansion.

At the time of editing between such channels,
A marker sound indicating an in point or the like may be added on the memory 20. Even if the marker sound is added in this way, the original audio signal is still recorded on the magneto-optical disk device, so that the original damage caused by the addition of the marker sound can be effectively avoided. Can be.

Further, in the above-described embodiment, a case has been described in which audio signals lost by editing are saved in units of sound groups. However, the present invention is not limited to this. The unit may be saved as a unit, or only the channel of the lost audio signal may be saved. In these cases, the above-described process of copying between channels may be executed to save the audio signal, or a new cluster may be created using only the audio to be saved.

In the above-described embodiment, the case where the backup flag is set in the UTOC and mode data of sector 0 with respect to the saved audio signal has been described. However, the present invention is not limited to this. By setting the same flag or the like in the UTOC, the saved audio signal may be identified.

Further, in the above-described embodiment, the case where the audio signal lost by editing is saved to the magneto-optical disk has been described. However, the present invention is not limited to this, and the working magneto-optical disk, hard disk device, memory May be evacuated. This makes it possible to omit the backup flag setting process described above.

Further, in the above-described embodiment, a case has been described in which audio signals of four channels, two channels, and one channel are divided into blocks and recorded on a magneto-optical disk. However, the present invention is not limited to this. The present invention can be widely applied to a case where an audio signal is recorded by a number.

In the above-described embodiment, the case where the audio signal recorded on the magneto-optical disk is edited has been described. However, the present invention is not limited to this, and various types such as an optical disk, a hard disk device, a magnetic tape, a semiconductor memory, etc. It can be widely applied when editing an audio signal recorded on a recording medium.

[0173]

As described above, according to the present invention, the channel data to be edited is read from the recording medium in units of the data write unit length, processed on the predetermined storage means,
By re-recording the data at the editing destination, if a plurality of channel data whose channel unit data length is shorter than the data write unit length are recorded in a time-division multiplexed manner, short data less than the data unit length will be Can be edited easily.

[Brief description of the drawings]

FIG. 1 is a schematic diagram for explaining copying between channels in a magneto-optical disk device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the magneto-optical disk device of FIG.

FIG. 3 is a plan view showing an operator of Ando.

FIG. 4 is a block diagram showing the magneto-optical disk device of FIG.

FIG. 5 is a time chart showing processing of an audio signal of four channels.

FIG. 6 is a time chart showing processing of a two-channel audio signal.

FIG. 7 is a time chart showing processing of an audio signal of one channel.

FIG. 8 is a time chart showing a copy process in editing in music units.

FIG. 9 is a time chart showing a movement process in editing in music units.

FIG. 10 is a time chart showing an exchange process in editing in music units.

FIG. 11 is a time chart showing an erasing process in editing on a music piece basis.

FIG. 12 is a time chart showing a combine process in editing in music units.

FIG. 13 is a time chart showing a division process in editing in music units.

FIG. 14 is a time chart showing an insert process in editing in units of sound groups.

FIG. 15 is a time chart showing movement processing in sound group unit editing.

FIG. 16 is a time chart showing exchange processing in sound group unit editing.

FIG. 17 is a time chart showing erasing processing in sound group unit editing.

FIG. 18 is a flowchart showing a copy and move processing procedure in editing between channels.

FIG. 19 is a time chart showing a relationship between a cluster structure and four-channel audio signals.

FIG. 20 is a schematic diagram illustrating movement processing in editing between channels.

FIG. 21 is a flowchart showing an exchange processing procedure in editing between channels.

FIG. 22 is a schematic diagram illustrating an exchange process in editing between channels.

FIG. 23 is a flowchart showing a processing procedure of erasure in editing between channels.

FIG. 24 is a schematic diagram illustrating an erasing process in editing between channels.

FIG. 25 is a flowchart showing a procedure for determining whether or not evacuation is possible;

FIG. 26 is a time chart for explaining an undo process;

FIG. 27 is a flowchart showing an undo process.

FIG. 28 is a time chart showing a structure of a cluster in a conventional magneto-optical disk device.

FIG. 29 is a chart showing a sector structure of an audio signal.

FIG. 30 is a chart showing UTOC of sector 0;

FIG. 31 is a time chart for explaining recording of an audio signal;

FIG. 32 is a time chart for explaining editing of an audio signal;

[Explanation of symbols]

1 ... Magneto-optical disk device, 5, 7, 8, 10 ... Operator, 9 ... Display panel, 13 ... Data decompression circuit, 14
... time correction circuit, 15 ... system control circuit, 18 ...
... Data decompression circuit, 20 ... Memory, 21 ... Memory control circuit, 22 ... Disk unit, 23 ... Signal processing circuit

Claims (10)

[Claims] 1. A plurality of channel data having a channel unit data length shorter than the data write unit length is recorded in a time-division multiplexed manner on a recording medium whose data write unit is determined to have a predetermined length. And an editing device for performing an editing process on a predetermined channel among the first specific channel data which is an editing source designated by a user and a second editing destination designated by a user. Operating means for designating the editing position of the specific channel data, and reproducing the multi-channel data relating to the editing range from the recording medium based on the editing range of the editing source specified by the operating means; Reproducing the multi-channel data relating to the editing range from the recording medium based on the editing position of the editing destination specified by the means A first storage unit for storing, for each data write unit, a plurality of channel data of an editing source reproduced by the reproducing unit; and a plurality of channel data of an editing destination reproduced by the reproducing unit. A second storage unit that stores the data for each data write unit; and the first specific channel data that is read from the first storage unit, and the second specific channel that is stored in the second storage unit. Overwriting means for overwriting from a corresponding position of data; and after overwriting the second storage means, the plurality of channel data stored in the second storage means is located before editing on the storage medium. An editing apparatus, comprising: recording means for re-recording at a place. 2. The method according to claim 1, further comprising the step of:
2. The editing apparatus according to claim 1, wherein the multi-channel data stored in the storage means is recorded again at a location on the storage medium which was located before editing. 3. The method according to claim 1, further comprising the step of:
Performing erasure processing on the first specific channel data stored in the storage means, and deleting the plurality of channel data stored in the first storage means after the erasure processing before editing on the storage medium The editing apparatus according to claim 1, wherein recording is performed again at a location where the editing apparatus was located. 4. A third storage means, wherein the second specific channel data in the second storage means is evacuated to the third storage means before overwriting the second storage means. After overwriting the second storage unit, the second specific channel data read from the third storage unit is stored in the first storage unit.
After overwriting the first specific channel data stored in the storage means, the multi-channel data stored in the first storage means is stored in a location on the storage medium which was located before editing. The editing apparatus according to claim 1, wherein recording is performed again. 5. A plurality of channel data having a channel unit data length shorter than the data write unit length is recorded in a time division multiplexed manner on a recording medium in which a data write unit is determined to have a predetermined length. An editing device for performing an editing process on a predetermined channel of the editing device, comprising: an operation unit that specifies an editing range of specific channel data specified by a user; and an editing range of an editing source specified by the operation unit. Playback means for playing back a plurality of channel data relating to the editing range from the recording medium, based on the storage means, and storage means for storing the editing-source plurality of channel data played back by the playback means for each data write unit. Erasing means for erasing, from the storing means, specific channel data designated by a user as a range; erasing processing on the storing means , Edited characterized in that it comprises a recording means for re-recording a plurality channel data stored in the storage means in the location previously located editing on the storage medium device. 6. A plurality of channel data having a channel unit data length shorter than the data write unit length is recorded in a time division multiplexed manner on a recording medium having a predetermined data write unit length. An editing method for performing an editing process on a predetermined channel, wherein an editing range of the first specific channel data which is an editing source designated by the user and a second editing destination which is designated by the user. A step of designating an editing position of the specific channel data; and a step of reproducing, by the operation means, the multi-channel data relating to the editing range from the recording medium based on the specified editing range of the editing source; Reproducing the multi-channel data of the editing destination from the recording medium based on the editing position of the editing destination specified by Storing the reproduced plurality of channel data of the editing source in the first memory for each data writing unit; and storing the reproduced plurality of channel data of the editing source in the second memory for each data writing unit. Storing the first specific channel data from the first memory, and overwriting the first specific channel data from a position corresponding to the second specific channel data stored in the second memory. And after overwriting the second memory, re-recording the multi-channel data stored in the second memory in a location on the storage medium that was located before editing. Editing method to do. 7. The method according to claim 7, further comprising the step of, after overwriting the second memory, re-recording the plurality of channel data stored in the first memory at a location on the storage medium which was located before editing. The editing method according to claim 6, characterized in that: 8. After overwriting the second memory, an erasing process is performed on the first specific channel data stored in the first memory, and stored in the first memory after the erasing process. 7. The editing method according to claim 6, further comprising the step of re-recording the selected plurality of channel data at a location on the storage medium that was located before the editing. 9. The method according to claim 1, wherein the second memory is overwritten before overwriting the second memory.
Saving the second specific channel data in the third memory to a third memory; and, after overwriting the second memory, transferring the second specific channel data read from the third memory to the first memory.
After overwriting the first specific channel data stored in the memory of the storage medium, the multi-channel data stored in the first storage means is re-stored in the location on the storage medium which was located before editing. 7. The editing method according to claim 6, further comprising the step of recording. 10. A multi-channel data having a channel unit data length shorter than the data write unit length is recorded in a time-division multiplexed manner on a recording medium in which the data write unit has a predetermined length. An editing method for performing an editing process on a predetermined channel among the following: a step of specifying an editing range of specific channel data specified by a user; and A step of reproducing the plurality of channel data relating to the editing range; a step of storing the reproduced plurality of channel data in the memory for each data writing unit; and a step of erasing, from the memory, specific channel data designated by the user as a range. After the erasing process in the memory, the multi-channel data stored in the memory Editing method characterized by a step of re-recording the location was located before the editing on the storage medium.