JPH11250636A - Reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To indicate the relative reproduction position of a music. SOLUTION: If the input operation of the reproduction start or the input operation of the track change during the reproduction is detected (S001), a start address is deducted from the end address of a music selected by the input operation to calculate a play time T (S002). The play time T is made to correspond to the whole length of the graphical bar of an indication unit (S003). Then, the present reproduction progress time of the music is calculated from the address of a data unit corresponding to the audio signal reproduced and outputted at present (S004). The calculated present reproduction progress time is made to correspond to the play time of the music and the percentage of the reproduction position in the graphical bar is decided and indicated 42a with a bar (S005).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus,
In particular, the present invention relates to a reproducing apparatus capable of reproducing a recording medium such as an optical disk and a magneto-optical disk.

[0002]

2. Description of the Related Art For example, when a music piece (program) such as music recorded on a recording medium such as a compact disc or a mini disc is reproduced by a reproducing apparatus, a reproduction time or the like is displayed on a display section provided in the main body of the reproducing apparatus. That can be displayed. In a mini-disc system or the like, a “program” is also generally called a “track”, and for example, a unit of one music or the like is managed as one program as audio data. As a display mode on the display unit, for example, it is possible to perform a numerical display indicating the current playback position from the beginning of the music to the progress position from the beginning of the music, or the time remaining to the end of the music by time. For example, selection can be made by operating a display switching key provided on an operation unit or the like.

[0003]

However, these time displays are, for example, numerically indicating minutes, seconds, and the like. For example, when a song of "3 minutes 5 seconds" is being played, "2 minutes 20 seconds" is displayed selectively for the current playback position, and "0 minutes 45 seconds" is displayed as the remaining time. That is, it is difficult to easily grasp the ratio of the progress time and the remaining time of the music, that is, the relative reproduction position in the music from these numerical values. When the user obtains the relative playback position in the music, the progress time and the remaining time are switched and displayed to grasp both times, and further, for example, the playing time of the music is calculated by adding these times. However, there is a trouble that the ratio of the progress time or the remaining time to the performance time has to be calculated.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a reproducing apparatus having a display means and capable of performing a reproducing operation on a predetermined recording medium. Calculating means for calculating a program data amount to be recorded on a recording medium and a current position of reproduction with respect to the program; and And a display control means capable of recognizing the current position of the display shape of the program data amount.

According to the present invention, the ratio of the progress time and the remaining time of the program (song) being reproduced can be displayed in a predetermined shape as graphic information that transitions in real time. Will be able to recognize it.

[0006]

Embodiments of the present invention will be described below. An example of this embodiment is a recording / reproducing apparatus corresponding to a magneto-optical disk (mini disk). The description will be made in the following order. 1. 1. Configuration of recording / reproducing device 2. Cluster format Area structure 4. 4. P-TOC sector 5. U-TOC sector Display form 7. Display control

[0007] 1. FIG. 1 shows an internal configuration of a mini disc recording / reproducing apparatus 1 of the present embodiment. A magneto-optical disk (mini-disk, hereinafter simply referred to as a disk) 90 on which audio data is recorded is driven to rotate by the spindle motor 2. And disk 9
A laser beam is irradiated by the optical head 3 on recording / reproducing for 0.

The optical head 3 outputs a high-level laser for heating the recording track to the Curie temperature during recording, and a relatively low-level laser for detecting data from reflected light by the magnetic Kerr effect during reproduction. Perform output. Therefore, the optical head 3 is equipped with a laser diode as a laser output unit, an optical system including a polarizing beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 3a is held by the biaxial mechanism 4 so as to be displaceable in the radial direction of the disk and in the direction of coming into contact with and separating from the disk.

The optical head 3 with the disk 90 interposed therebetween
The magnetic head 6a is arranged at a position facing the above. The magnetic head 6a performs an operation of applying a magnetic field modulated by the supplied data to the disk 90. The entire optical head 3 and the magnetic head 6a can be moved in the disk radial direction by the thread mechanism 5.

The information detected from the disk 90 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 7. The RF amplifier 7 extracts a reproduction RF signal, a tracking error signal TE, a focus error signal FE, groove information GFM, and the like by performing an arithmetic process on the supplied information. The groove information GFM is absolute position information recorded on the disc 90 as a pre-groove (wobbling groove). The extracted reproduced RF signal is supplied to the encoder / decoder section 8. Further, the tracking error signal TE and the focus error signal FE are supplied to the servo circuit 9, and the groove information GFM is supplied to the address decoder 10.

The servo circuit 9 is provided with the supplied tracking error signal TE and focus error signal FE, and the system controller 1 composed of a microcomputer.
Various servo drive signals are generated based on a track jump command, an access command, rotation speed detection information of the spindle motor 2 and the like from the controller 1 to control the two-axis mechanism 4 and the thread mechanism 5 to perform focus and tracking control. 2 is controlled to a constant linear velocity (CLV).

The address decoder 10 decodes the supplied groove information GFM to extract address information.
This address information is supplied to the system controller 11 and used for various control operations. The reproduced RF signal is subjected to decoding processing such as EFM demodulation and CIRC in the encoder / decoder section 8. At this time, addresses, subcode data, and the like are also extracted and supplied to the system controller 11.

EFM demodulation in the encoder / decoder section 8
The decoded audio data (sector data) such as CIRC is temporarily written into the buffer memory 13 by the memory controller 12. The reading of data from the disk 90 by the optical head 3 and the transfer of reproduced data in the system from the optical head 3 to the buffer memory 13 are at 1.41 Mbit / sec, and are usually performed intermittently.

The data written in the buffer memory 13 is read out at a timing when the transfer of the reproduced data becomes 0.3 Mbit / sec, and is supplied to the encoder / decoder section 14. Then, a reproduction signal processing such as a decoding processing for the audio compression processing is performed, and 44.1 KHz sampling, 14.1 KHz sampling,
This is a 6-bit quantized digital audio signal. This digital audio signal is converted into an analog signal by the D / A converter 15, the output processing unit 16 performs level adjustment, impedance adjustment, and the like, and outputs the analog audio signal Aout from the line output terminal 17 to an external device. . In addition, it is supplied to the headphone output terminal 27 as the headphone output HPout, and is output to the connected headphones.

The digital audio signal decoded by the encoder / decoder section 14 is supplied to a digital interface section 22 so that the digital audio signal can be output from the digital output terminal 21 to an external device as a digital audio signal Dout. . For example, it is output to an external device in the form of transmission by an optical cable.

When a recording operation is performed on the disk 90, the recording signal (analog audio signal Ain) supplied to the line input terminal 18 is supplied to the A / D converter 1
After being converted into digital data by 9, the digital data is supplied to the encoder / decoder section 14 and subjected to audio compression encoding processing. Alternatively, when a digital audio signal Din is supplied from an external device to the digital input terminal 20, control codes and the like are extracted by the digital interface unit 22, and the audio data is transmitted to the encoder /
The data is supplied to the decoder unit 14 and subjected to audio compression encoding processing. Although not shown, it is naturally possible to provide a microphone input terminal and use the microphone input as a recording signal.

The recording data compressed by the encoder / decoder section 14 is once written and accumulated in the buffer memory 13 by the memory controller 12 and then read out for each predetermined amount of data unit.
The data is sent to the decoder unit 8. After being subjected to encoding processing such as CIRC encoding and EFM modulation in the encoder / decoder section 8, it is supplied to the magnetic head drive circuit 6.

The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a according to the encoded recording data. That is, the application of the N or S magnetic field to the disk 90 by the magnetic head 6a is executed.
At this time, the system controller 11 supplies a control signal to the optical head so as to output a laser beam at a recording level.

The operation unit 23 indicates a part to be operated by a user, and is provided with various operation keys and operators as dials. The controls include, for example, playback, recording, pause, stop, FF (fast forward), REW (fast reverse), AMS
Operators related to a recording / reproducing operation such as (search for search), operators related to a play mode such as normal reproduction, track reproduction, shuffle reproduction, and operations for a display mode operation for switching a display state on the display unit 24 Various necessary controls are provided, such as controls for editing operations such as a child, track division, track connection, track deletion, track name input, and disc name input. Operation information from these operation keys and dials is supplied to the system controller 11, and the system controller 11 executes operation control according to the operation information.

The display operation of the display unit 24 is controlled by the system controller 11. That is, the system controller 11 transmits data to be displayed when the display operation is performed to the display driver in the display unit 24. The display driver, for example, VFD (Vacuum
Fluorescent Display) is used to drive the display operation of the display to display the required numbers, characters, symbols, and the like. The display unit 24 shows the operation mode state of the recording / reproducing disc, the track number, the numerical value of the recording time / reproduction time or bar graphic display, the editing operation state, and the like. The disk 90 can record character information (track name and the like) managed in association with a program track (music and the like) as main data, but displays input characters when the character information is input, and reads from the disk. The displayed character information is displayed.

The system controller 11 is a microcomputer having a CPU, a program ROM, a work RAM, an interface, and the like, and controls the various operations described above.

When recording / reproducing operations are performed on the disc 90, management information recorded on the disc 90, that is, P-TOC (pre-mastered TOC),
It is necessary to read U-TOC (user TOC).
The system controller 11 determines the address of the area to be recorded on the disk 90 and the address of the area to be reproduced on the disk 90 according to the management information. This management information is held in the buffer memory 13. Then, when the disk 90 is loaded, the system controller 11 reads out the management information by executing a reproduction operation on the innermost peripheral side of the disk on which the management information is recorded, and stores the information in the buffer memory 13. Thereafter, it can be referred to at the time of recording / reproducing / editing operation of the program on the disc 90.

The U-TOC is rewritten in accordance with recording of program data and various editing processes. The system controller 11 stores the U-TOC updating process in the buffer memory 13 every time a recording / editing operation is performed. The rewriting operation is performed on the U-TOC information, and the U-TOC area of the disc 90 is rewritten at a predetermined timing in accordance with the rewriting operation.

FIG. 2 is a block diagram illustrating a configuration example of the display unit 24. For example, V surrounded by a dashed line
The display unit 24 configured as an FD includes a control gate array 30, a memory 31, and an anode driver unit 3.
2. It is constituted by a grid driver section 33, a fluorescent section 34 forming an actual display section, and the like, and can perform required display based on various control signals and display data supplied from the system controller 11. Have been able to. The system controller 11 sends, for example, a read signal RD, a write signal WD, a chip select signal CS,
Various control signals such as a command / data signal C / D are supplied, and data (display data) for performing display is supplied via a bus line B1. That is,
Data for performing bar graphic display described later is supplied via the bus line B1. In addition, the display unit 24 receives a drive voltage ebb and a filament voltage E for anode / grid from the system controller 11.
Drive power such as f1, Ef2, and power supply voltage Vcc is supplied.

The control gate array 30 is provided with a group of control gates for supplying control signals to the anode driver unit 31 and the grid driver unit 32. The control signals are supplied to the anode gate unit via the bus lines B2 and B3, respectively. It is supplied to the driver unit 31 and the grid driver unit 32. The anode driver section 31 is operated by the drive voltage ebb, and generates a drive signal for the anode formed in the fluorescent section 34 based on the display data supplied from the control gate array 30. Similarly, the grid driver unit 32 is also operated by the drive voltage ebb, and generates a drive signal for the grid formed in the fluorescent unit 34 based on the display data supplied from the control gate array 30.

The memory 33 is provided as a work area or the like for generating data for display. For example, data corresponding to the transition of the reproduction position when performing bar graphic display, which will be described later, is stored via the bus line B6. You. Then, it is read out as needed and supplied from the control gate array 30 to the anode drive unit 31 and the grid drive unit 32.

The fluorescent section 34 is arranged so that an anode coated with a fluorescent substance as a pixel and a grid formed as a metal mesh face each other, and are connected via a bus line B4 and a bus line B5. Each drive signal is supplied to the anode and the grid. Then, the fluorescent material of the anode can be stimulated by thermoelectrons radiated from the cathode to which the filament voltages Ef1 and Ef2 are supplied, so that light emission display can be performed.

2. Cluster Format A data unit called a cluster will be described with reference to FIG.
As a recording track in the mini disc system, clusters CL are formed continuously as shown in FIG. 3, and one cluster is the minimum unit for recording. One cluster is 2-3
The audio data to be recorded, which corresponds to the number of orbital tracks, has a data amount corresponding to 2.0416 seconds as the reproduction time.

One cluster CL is composed of a sector S
It is formed of a linking area of 4 sectors FC to SFF and a main data area of 32 sectors indicated as sectors S00 to S1F. One sector is a data unit formed of 2352 bytes. Of the four sub data areas, the sector SFF is a sub data sector,
Although it can be used for information recording as sub-data, three sectors SFC to SFE are not used for data recording. However, in the mini disc system, a read-only disc is also prepared, and in the read-only disc, sectors SFC to SFE are also used for recording sub data. On the other hand, recording of TOC data, audio data, and the like is performed in the main data area for 32 sectors. The address is recorded for each sector.

The sectors are further subdivided into units called sound groups, and two sectors are divided into 11 sound groups. That is, as shown in the figure, the sound groups SG00 to SG0A are included in two consecutive sectors such as an even sector such as the sector S00 and an odd sector such as the sector S01. One sound group is formed of 424 bytes,
The amount of audio data is equivalent to 11.61 msec. In one sound group SG, data is recorded while being divided into an L channel and an R channel. For example, the sound group SG00 includes L channel data L0 and R channel data R0.
Is composed of L channel data L1 and R channel data R1. Note that 212 bytes, which is a data area of the L channel or the R channel, is called a sound frame.

3. Area Structure The area structure of the disc 90 of this example will be described with reference to FIG. FIG. 4A shows an area from the innermost side to the outermost side of the disk. Disk 90 as magneto-optical disk
Is a pit area on the innermost side where reproduction-only data is formed by embossed pits.
C is recorded. The outer periphery of the pit area is a magneto-optical area, which is a recordable / reproducible area in which a groove is formed as a guide groove for a recording track. The section from the innermost cluster 0 to the cluster 49 in the magneto-optical area is used as a management area, and actual music and the like are recorded as one track each in the clusters 50 to 2.
Up to 251 program areas. The lead-out area is located outside the program area.

FIG. 4 shows the inside of the management area in detail.
(B). FIG. 4B shows sectors in the horizontal direction and clusters in the vertical direction. The sectors SFC to SFE not used for data recording are omitted. In the management area, clusters 0 and 1 are buffer areas with the pit area. The cluster 2 is a power calibration area PCA and is used for adjusting the output power of the laser beam. For clusters 3, 4, and 5, U-TOC is recorded. Although a detailed description of the contents of the U-TOC will be described later, a data format is defined for each sector in one cluster, and predetermined management information is recorded. That is, the address of each track recorded in the program area, the address of the free area, etc. are recorded, and the track name attached to each track,
The U-TOC sector is defined so that information such as recording date and time can be recorded. Clusters having a sector serving as such U-TOC data are clusters 3, 4, 5
Is recorded three times. Clusters 47, 48, 49
Is a buffer area with the program area.

Cluster 50 (= 32h in hexadecimal notation)
In the present specification, the numerical value added with "h" is in a so-called hexadecimal notation.) In the subsequent program area, audio data such as one or a plurality of music pieces is recorded in a compression format called ATRAC. You. The recorded programs and recordable areas are managed by the U-TOC. In each cluster in the program area, the sector FFh can be used for recording some information as sub data as described above.

4. P-TOC sector Here, an audio data sector recorded on the disk 90 in the form of sector data, and recording / recording of audio data
First, P-TO
The sector C will be described. As the P-TOC information, designation of an area such as a recordable area (recordable user area) of the disc, management of a U-TOC area, and the like are performed. When the disk 90 is a read-only optical disk, it is also possible to manage music recorded in ROM by the P-TOC.

FIG. 5 shows the format of the P-TOC.
FIG. 5 shows P-TOC repeatedly recorded in an area used for P-TOC (for example, a ROM area on the innermost peripheral side of the disk).
One sector (sector 0) of the TOC information is shown. The description of the P-TOC format after sector 1 is omitted.

The data area of the P-TOC sector (4 bytes × 588, 2352 bytes) has all 0s at the beginning.
Alternatively, a synchronization pattern consisting of all-one 1-byte data and an address indicating a cluster address and a sector address are added by 4 bytes, and the above is used as a header to indicate that the area is a P-TOC area.

Following the header, an identification ID in ASCII code corresponding to the character "MINI" is added at a predetermined address position. Further, the disc type and recording level, the track number of the first music piece recorded (First TNO), the music number of the last music piece (Last TNO), the lead-out start address ROA, the power cal area start address PCA, U -TOC (U of FIG. 6 described later)
A start address USTA of a data area of the TOC sector 0), a start address RSTA of a recordable area (recordable user area), and the like are recorded.

Subsequently, there is provided a correspondence table instruction data section having table pointers (P-TNO1 to P-TNO255) for associating each recorded music or the like with a parts table in a management table section described later.

In the area following the corresponding table instruction data portion, (01h) to (FF) corresponding to the table pointers (P-TNO1 to P-TNO255) in the corresponding table instruction data portion.
A management table section having 255 parts tables up to h) is prepared. Each part table has a start address that is a starting point for a certain part,
An end address at the end and mode information (track mode) of the part (track) can be recorded. Note that a part refers to a track portion on which temporally continuous data is physically continuously recorded.

The track mode information in each part table records, for example, information as to whether or not the part is set to prohibit overwriting or data copying, whether or not it is audio information, and a monaural / stereo type. Have been.

Each part table from (01h) to (FFh) in the management table section indicates the content of the part by the table pointer (P-TNO1 to P-TNO255) of the corresponding table instruction data section. In other words, for the first song, a part table (for example, (01h)) is used as the table pointer P-TNO1. However, the table pointer is actually a byte position in the P-TOC sector 0 by a predetermined calculation process. In this case, the start address of the parts table (01h) is the start address of the recording position of the first music piece, and the end address is the same as the end address of the first music piece. The end address of the position where the first song is recorded. Further, the track mode information is information on the first music piece.

Similarly, for the second song, the parts table (for example, (02) indicated by the table pointer P-TNO2)
h)), the start address, end address, and track mode information of the recording position of the second music piece are recorded.

Similarly, since the table pointer is prepared up to P-TNO255, it is possible to manage up to the 255th tune on the P-TOC. And like this, PT
By forming the OC sector 0, for example, at the time of reproduction, a predetermined music piece can be accessed and reproduced.

In the case of a recordable / reproducible magneto-optical disc, since there is no so-called pit music area, the above-described correspondence table instruction data section and management table section are not used (these are U-TOCs which will be described subsequently). Therefore, each byte is all set to “00h”. However, for a read-only type disc in which all songs are recorded in a ROM form (pit form) and a hybrid type disc having both a ROM area and a magneto-optical area as an area for recording songs and the like, The correspondence table instruction data section and the management table section are used for managing the music in the ROM area.

5. U-TOC Sector Next, the U-TOC will be described. FIG. 6 shows the format of one sector (sector 0) of the U-TOC, in which management information mainly on the music that the user has recorded and on the unrecorded area (free area) where new music can be recorded is recorded. Data area. Note that U
-TOC is also optional for sector 1 and subsequent ones, but a description thereof will be omitted. For example, when attempting to record a certain song on the disc 90, the system controller 11 searches for a free area on the disc from the U-TOC and can record audio data there. ing. At the time of reproduction, the area in which the music to be reproduced is recorded is determined from the U-TOC,
The reproduction operation is performed by accessing the area.

In the U-TOC sector (sector 0) shown in FIG. 6, a header is provided first, similarly to the P-TOC, and then a maker code, a model code, and a music number of the first music are provided at predetermined address positions. (First TNO), the last song number (Last TNO), sector usage status, disk serial number, disk ID, etc., are recorded. Various table pointers (P-DFA, P-EMPTY, P-EMPTY,
An area for recording FRA, P-TNO1 to P-TNO255) is prepared.

Then, 255 parts tables (01h) to (FFh) are provided as a management table section to be associated with the table pointers (P-DFA to P-TNO255) of the corresponding table instruction data section. 5, a start address as a starting point, an end address as an end, and mode information (track mode) of the part are recorded in the same manner as in the P-TOC sector 0 in FIG. In the case of this U-TOC sector 0, since the parts indicated in each part table may be successively connected to other parts, the part table in which the start address and the end address of the connected parts are recorded is stored. The link information shown can be recorded.

In this type of recording / reproducing apparatus, even if data of one music piece is physically discontinuous, that is, even if it is recorded over a plurality of parts, it is reproduced while accessing between parts, so that the reproducing operation is hindered. Therefore, the music or the like recorded by the user may be recorded in a plurality of parts for the purpose of efficient use of the recordable area. For this reason, link information is provided, for example, the numbers (01h) to (FFh) given to the respective parts tables (actually indicated by a numerical value indicating the byte position in the U-TOC sector 0 by a predetermined arithmetic processing) Thus, the parts tables can be connected by designating the parts tables to be connected. (Because music or the like recorded in advance in the form of pits is not usually divided into parts, as shown in FIG.
In C sector 0, the link information is all "(00h)". )

That is, in the management table section in the U-TOC sector 0, one part table represents one part, and for example, a musical piece constituted by connecting three parts is connected by link information. The three parts tables manage the positions of the parts.

Each part table from (01h) to (FFh) in the management table section of the U-TOC sector 0 is a table pointer (P-DF) in the corresponding table instruction data section.
A, P-EMPTY, P-FRA, P-TNO1 ~ P-TNO255)
The contents of the part are shown as follows.

The table pointer P-DFA indicates a defective area on the disk 90, and indicates a track part (= part) serving as a defective area due to a scratch or the like in one part table or a plurality of parts tables. The first parts table is specified. In other words, if a defective part exists, (01h) to (FF
h) is recorded, and in the corresponding parts table, defective parts are indicated by start and end addresses. If another defective part exists, another part table is designated as link information in the part table, and the defective part is also indicated in the part table. If there is no other defective part, the link information is, for example, "(00
h)]], and no link thereafter.

The table pointer P-EMPTY indicates the head part table of one or a plurality of unused parts tables in the management table section. If there is an unused parts table, the table pointer P-EMPTY is set as the table pointer P-EMPTY. , (01h) to (FFh) are recorded.
If there are multiple unused part tables, the part tables are sequentially specified by the link information from the part table specified by the table pointer P-EMPTY, and all the unused part tables are connected on the management table section. Is done.

The table pointer P-FRA is a writable free area (including an erasure area) on the disk 90.
And a leading part table in one or a plurality of parts tables in which a track portion (= part) to be a free area is indicated. In other words, if a free area exists, any one of (01h) to (FFh) is recorded in the table pointer P-FRA, and the parts table corresponding to the free area is indicated by the start and end addresses. Have been. Further, when there are a plurality of such parts, that is, when there are a plurality of parts tables, the link information sequentially designates parts tables whose link information is "(00h)".

FIG. 7 schematically shows the management state of parts that are free areas by using a parts table. This is because when the parts (03h) (18h) (1Fh) (2Bh) (E3h) are set as free areas, this state follows the corresponding table instruction data P-FRA and the parts table (03h) (18h) (1Fh) The state represented by the link of (2Bh) (E3h) is shown. It should be noted that the above-described management of the defective area and the unused parts table is the same.

The table pointers P-TNO1 to P-TNO255 indicate the music pieces recorded by the user on the disk 90. For example, the table pointer P-TNO1 indicates one or a plurality of parts in which the data of the first music piece is recorded. The part table that indicates the part that is first in time is specified.

For example, when the first music piece is recorded on the disc without dividing the track (that is, as one part), the recording area of the first music piece is the part indicated by the table pointer P-TNO1. It is recorded as a start and end address in the table.

Further, for example, in the case where the second music piece is discretely recorded on a plurality of parts on the disc,
Each part is designated in order of time to indicate the recording position of the music. That is, the table pointer P-TNO2
From the part table specified in (1), further part tables are sequentially specified in the temporal order by the link information, and linked to the part table in which the link information becomes "(00h)" (similar to FIG. 6 described above). Form). In this way, for example, since all the parts on which the data constituting the second tune are recorded are sequentially designated and recorded, the data of the U-TOC sector 0 can be used to reproduce the second tune or the second tune. When performing overwriting on the area, it is possible to access the optical head 3 and the magnetic head 6 to extract continuous music information from discrete parts, and to perform recording using the recording area efficiently.

As described above, the area management on the disk is P
-The music and free area recorded by the TOC and recorded in the recordable user area are
Performed by TOC. These TOC information are read into the buffer memory 13 and read from the system controller 11.
Will be able to refer to this.

6. Display Mode Hereinafter, a display mode of the display unit 24 according to the present embodiment will be described. FIG. 8 illustrates a display example on the display unit 24 when music is being reproduced. FIG. 8 (a)
(B), (c), and FIGS. 8 (d), (e), and (f) show the cases where other songs are being played. In these figures, the display area 40 shows the track number (program number) of the music (program) being reproduced. 8A to 8C, the disk 90
The second song “TR. 8 (e) to 8 (f), and the third song “T
R. 3 "is selected and played. The display area 41 indicates the current playback position of the song being played, for example, as the progress time from the beginning of the song. Also, the progress time is shown in this figure,
The remaining time from the current playback position to the end of the song can also be indicated. This display switching can be performed by a display switching key provided on the operation unit 23 shown in FIG.

When the reproduction of a musical piece is started, for example, a process is performed in which the longitudinal direction corresponds to the playing time of the musical piece. The left end of the graphical bar 42 is the beginning of the musical piece, and the right end is the musical piece. It will be terminated.
Then, as the performance progresses, the bar display changes, for example, from the left side to the right side. FIG.
The music “TR. For example, the total performance time (the data amount of the track) of the music of “2” is, for example, “03 minutes 0
5 seconds ". Therefore, graphical bar 4
2 is set to correspond to "03:05" from the left end to the right end.

As shown in FIG. 8 (a), the current playback position is the song "TR. For example, "00m" from the beginning of "2"
20s "(20 seconds), the bar display 42a indicated by hatching is the ratio of" 00m20s "to the total playing time" 03 minutes 05 seconds ", and is displayed near the left end of the graphical bar 42. From this state, the performance further progresses, and for example, as shown in FIG. 8 (b), when the time becomes “02m20s” (2 minutes 20 seconds), the music “TR. 2], the player is playing about 3/4 of the position from the beginning, and the bar display 42a
Will also be displayed near the right end. Then, the current playback position is the song “TR. 2 from the beginning, for example, "03m
02s ", that is, almost the last part of the song, a bar display 42a is displayed on the entire graphical bar 42 as shown in FIG. 8C.

FIGS. 8 (d), 8 (e) and 8 (f) show, for example, the song "TR. 2 followed by the song "TR. 3), the total playing time of this music piece is, for example, "06 minutes 20 seconds". As shown in FIG. 8D, the current playback position is the song “TR. If "00m20s" (20 seconds) from the beginning of "3", the bar display 42a indicates "00m20s" for the total performance time "06 minutes 20 seconds".
20s ”ratio, and the graphical bar 4
2 is displayed near the left end.

From this state, the performance further proceeds, and the current playback position is set to "03m02" as shown in FIG.
s ”(3 minutes and 2 seconds), the song“ TR. 3], the player is playing about 1/2 of the whole position, and the bar display 42a is also a graphical bar 42.
Will be displayed near the center of the. Then, the current playback position is the song “TR. "06m02" from the beginning of "3"
s "(6 minutes and 2 seconds), that is, almost the last part, a bar display 42a is displayed on almost all of the graphical bar 42 as shown in FIG. 8 (f).

In FIG. 8, for example, FIG.
Comparing (d), each of the songs “TR. 2 ”and the song“ TR. "00m20s" from the top for "3"
Is shown when the position is reproduced. However, even when the same “00m20s” position is played as the current playback position, the ratio to the total playing time is different, so
The length of the bar display 42a differs according to this. That is, the music “TR. The bar display 42a of "2." has the song "TR. 2" shown in FIG. 3] bar display 4
The display is formed to be longer than 2a.

Similarly, for example, comparing FIG. 8 (c) with FIG. 2 ”and the song“ T
R. 3 shows the case where the position of “03m02s” from the beginning is reproduced, but the same “03m02s” is reproduced.
s "as shown in FIG. 8 (c). 2), a bar is displayed on almost all of the graphical bar 42, and FIG.
As shown in the song “TR. In the case of "3", the bar display 42a is displayed on about 1/2 of the graphical bar 42. As described above, even when the same position is reproduced as the absolute time as viewed from the beginning of each music, the ratio of the current reproduction position according to the length of the music can be indicated by the bar display 42a. Can visually recognize how much the current playback position is in the entire music.

Next, according to the flowchart of FIG.
The system controller 11 in the case of performing the display control described with reference to FIGS.
Will be described. For example, if a track change input operation is detected during playback start or during playback (S0
01), the play address T is calculated by subtracting the start address from the end address of the music piece selected by the input operation (S002). The playing time T is made to correspond to the entire length of the graphical bar 42 (S003). These steps S002 and S003 are an initial process for displaying a bar on the graphical bar 42.

When the playback operation is started after the start of the playback or the input operation of the track change is performed, the address of the data section corresponding to the audio signal being played back and output via the current output processing section 16 is used to determine the current address of the music. Is calculated (S004). Then, the calculated current playback progress time is made to correspond to the performance time of the music, and the percentage of the position in the graphical bar 42 is determined, and FIG. 8A to FIG. Bar indication 4 shown
2a is performed (S005).

It is to be noted that the bar display 42a can be similarly performed even when data of one music piece is physically discontinuous, that is, recorded over a plurality of parts and reproduced while accessing between parts. You. For example, if one music piece is recorded separately in two parts, for example, the total playing time is calculated by subtracting the start address from the end address of the first part and the end address of the first part. , And the time obtained by subtracting the start address from the data, which corresponds to the entire graphical bar 42. If the first part is being played, for example, the ratio from the beginning of the first part to the current playback position with respect to the total playing time (the first part and the second part) is indicated. become. Further, for example, when the second part is being played, the time obtained by adding the playing time of the first part and the time from the beginning of the second part to the current playback position is set as the current playback position of the song. It will be displayed on the graphical bar 42.

As described above, the current playback position in the music being played back is displayed as a graphic display, for example, on the graphical bar 4.
2 can be indicated by a bar display. Therefore, the user can visually recognize the transition of the reproduction position without being bound by the numerical value as the time display. The display is not limited to the bar display by the graphical bar 42, and a display in a pie chart form, for example, may be formed.

[0070]

As described above, according to the present invention, the reproduction progress ratio of the music currently being reproduced with respect to the total playing time can be shown in a predetermined shape by a graphic display such as a graphical bar. It has been like that. Therefore,
The current playback position in the music can be grasped in an analog manner from the figure and can be intuitively recognized. Further, since the graphic display transitions in response to the numerical time display, it has accuracy as information.

[Brief description of the drawings]

FIG. 1 is a block diagram of a recording and reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a display unit in the recording / reproducing device of the present embodiment.

FIG. 3 is an explanatory diagram of a sector format of a disk according to the embodiment.

FIG. 4 is an explanatory diagram of an area structure of a disc according to the embodiment.

FIG. 5 is an explanatory diagram of a P-TOC sector in a disk.

FIG. 6 is an explanatory diagram of a U-TOC sector in a disk.

FIG. 7 is an explanatory diagram of a link structure of a U-TOC sector on a disc.

FIG. 8 is a diagram illustrating transition of a display state on a display unit.

FIG. 9 is a flowchart illustrating a process of performing display control of a display unit.

[Explanation of symbols]

Reference Signs List 1 recording / reproducing device, 3 optical head, 6a magnetic head, 8 encoder / decoder, 11 system controller, 12 memory controller, 13 buffer memory, 14 encoder / decoder, 23 operating unit, 24 display, 90 disk, 42 graphics Bar, 42a Bar display

Claims (2)

[Claims] 1. A reproducing apparatus which can perform a reproducing operation on a predetermined recording medium and has a display means, at least a data amount of a program recorded on the recording medium and a current position of reproduction of the program. Calculating means for calculating the program data amount in the program in a predetermined shape on a display means based on the calculation result by the calculating means, and displaying the program data amount in the predetermined shape with respect to the display position of the program data amount. And a display control means capable of recognizing the information. 2. The display control means causes the program data amount to be displayed as a total playing time of the program, and to display the current position as a current playing time position within the total playing time. The playback device according to claim 1, wherein: