JPH07121200A - Device for recording/reproducing information - Google Patents

Abstract

PURPOSE:To improve operability by recording a prescribed position of information recorded on a recording medium and returning to the position at the time of the same recording medium. CONSTITUTION:At a recording time, when a user depresses a sound recording key, a sound inputted from a microphone 2 is recorded in a memory card 6 by a system micro computer 7. When a D mark is depressed on the way of recording, the sound data until then are recognized as one document, and the information (index) is recorded in the memory card 6 in addition. Until a stop key is depressed, the sound is recorded in the memory card 6 as one or plural documents. At a reproducing time, when a break is depressed, the sound data are read out from the memory card 6 to be reproduced by a speaker 11. By depressing a fast feeding key or a rewinding key, the jumping or the jumping back is enabled in document by using the index. Thus, the fast feeding or the rewinding is operated instantaneously.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording / reproducing information, and more particularly to an information recording / reproducing apparatus for recording / reproducing information using a removable recording medium including a semiconductor memory device. It is about.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for recording and reproducing information,
A cassette tape recorder that records or reproduces audio information by using a magnetic tape as a recording medium is generally known. The advantages of using a magnetic tape in a cassette tape recorder are that the cost of the magnetic tape itself is low and that the tape length is long so that recording / reproduction can be performed for a long time. On the other hand, since the voice is recorded on the magnetic tape by the relative movement of the magnetic head and the magnetic tape, a mechanism for running the magnetic tape is required. As a result,
As a drawback, it is difficult to reduce the size and weight of the device, and mechanical operation causes mechanical noise, high failure rate, slow access speed, etc. .

In order to solve the above problems, an audio recording / reproducing apparatus using a semiconductor memory device as a recording medium instead of a magnetic tape has been developed.

This device does not record or reproduce voice by utilizing a magnetic recording phenomenon due to mechanical relative motion as in a device using a magnetic tape, but utilizes an electric charge accumulation state. Voice recording.
Therefore, this device does not require the above-mentioned mechanism, so that the device can be easily reduced in size and weight, mechanical noise does not occur, and reliability can be improved. Moreover, since the recording and reproducing operations are all performed electrically, the access speed for searching for a desired voice becomes high,
It is possible to instantly find a desired voice and the like. On the other hand, a semiconductor memory device is generally rather expensive and has a drawback that a backup power source for holding stored data is required, but in recent years, it has become relatively inexpensive due to the development of a semiconductor manufacturing method. A non-volatile batch erasable memory that can be manufactured and does not require a backup power supply has been put into practical use, and the above problems have been overcome.

[0005]

In order to improve the operability of the above-mentioned information recording / reproducing apparatus, a predetermined position of the mounted recording medium is temporarily stored (hereinafter referred to as "store"), and the stored predetermined position is stored. There is a demand for an operation to return to (to be referred to as a recall hereinafter).

However, in the above magnetic tape device, it is difficult to temporarily remember the pointer and instantly restore the pointer to the remembered pointer, resulting in poor operability.

Further, in the information recording / reproducing apparatus using the above semiconductor memory device, the above operation is possible,
If a memory card different from the stored memory card is inserted and recalled, the pointer returns to a completely different pointer than intended by the user, and the operability is also poor.

Further, at the time of recall, even if the same memory card is inserted and recorded at a position before the stored pointer after the store operation, the elapsed time being recorded is not the correct elapsed time, and therefore, it is accurate. However, there was a problem that the operability was poor.

The present invention is to solve the above-mentioned problems, and information recording which can improve operability by recording a predetermined position of information recorded on a recording medium and returning to that position. An object is to provide a reproducing device.

[0010]

According to another aspect of the present invention, there is provided an information recording / reproducing apparatus comprising: a recording means for recording a predetermined position of information stored in a semiconductor memory device; and a recording medium newly attached to the recording means. Determining means for determining whether or not the recording medium is the same as the recording medium in which the predetermined position is recorded, and reproducing means for reproducing information from the predetermined position when the determining means determines that the recording medium is the same recording medium. Including and

An information recording / reproducing apparatus according to a second aspect of the present invention comprises a recording means for recording a predetermined position of the information stored in the semiconductor memory device, and a reproducing means for reproducing the information from the predetermined position.
The newly installed recording medium is the same recording medium as the recording medium that records the predetermined position in the recording means, and the determining means determines that the recording medium is a different recording medium. In this case, a denial unit for denying the reproduction operation from the predetermined position is included.

According to another aspect of the present invention, there is provided an information recording / reproducing apparatus comprising: a recording means for recording a predetermined position of information stored in the semiconductor memory device; and a reproducing means for reproducing the information from the predetermined position.
The newly installed recording means is the same recording medium as the recording medium that records the predetermined position in the recording means, and the determining means determines that the recording medium is the same recording medium. In this case, it includes a correction means for correcting the attribute information according to the recording state of the information after recording the predetermined position on the recording means.

[0013]

In the information recording / reproducing apparatus according to claim 1,
When the newly installed recording medium is the same recording medium as the recording medium recording the predetermined position, the information can be reproduced from the predetermined position.

In the information recording / reproducing apparatus according to the second aspect, when the newly mounted recording medium is different from the recording medium in which the predetermined position is recorded, the reproducing operation from the predetermined position can be rejected.

In the information recording / reproducing apparatus according to the third aspect, the attribute information can be corrected according to the recording state of the information after recording the predetermined position.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An information recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an information recording / reproducing apparatus according to an embodiment of the present invention.

In FIG. 1, the information recording / reproducing apparatus includes a main body 1 and a memory card 6. The memory card 6 has a structure that can be attached to and detached from the main body 1.

The main body 1 includes a microphone 2, an amplifier 3,
10, an AD converter 4, an audio compression circuit 5, a system microcomputer 7, an audio decompression circuit 8, a DA converter 9, a speaker 11, a key switch 12, and a display unit 13.

The operation of the above information recording / reproducing apparatus will be described below. During recording, voice is converted into an electric signal (analog signal) by the microphone 2, amplified by the amplifier 3, and then converted from an analog signal to a digital signal by the AD converter 4. The converted digital audio signal is compressed by the audio compression circuit 5 so that the amount of information is reduced to a fraction to a few tenths and output to the system microcomputer 7. The system microcomputer 7 once reads the compressed data and writes the compressed data in the memory card 6 by designating a predetermined address. The system microcomputer 7 repeats the operation of sequentially fetching data from the voice compression circuit 5 and writing it to the memory card 6 while incrementing the address. By the above operation, the compressed audio data is recorded in the memory card 6.

Next, at the time of reproduction, the system microcomputer 7 specifies a predetermined address from the memory card 6 to read the data, and transfers the read data to the audio decompression circuit 8.
The audio expansion circuit 8 expands the data compressed by the audio compression circuit 5 into the original digital audio signal. The expanded digital audio signal is converted from a digital signal to an analog signal by the DA converter 9, amplified by the amplifier 10, and then reproduced as sound from the speaker 11. By the above operation, the compressed data recorded in the memory card 6 is reproduced as sound.

The operation such as the above-mentioned recording or reproduction is performed by the user through the key switch 1 connected to the system microcomputer 7.
It is controlled by pressing a predetermined key of 2. Also,
The operation status of the device is displayed on the display unit 13 connected to the system microcomputer 7.

Next, the outline of the recording or reproducing operation will be described. When the user presses the record key during recording, the voice input from the microphone 2 by the system microcomputer 7 is recorded in the memory card 6. If the D mark key is pressed during recording, the voice data up to that point is recognized as one document, and this information (hereinafter referred to as index) is recorded together in the memory card 6. The sound is recorded in the memory card 6 as one or more documents as described above until the stop key is pressed. Also,
At the start or end of the insertion or overwriting recording, the corresponding index is also recorded.

When the play key is pressed during reproduction, the audio data is read from the memory card 6 and reproduced by the speaker 11. By pressing the fast forward key or the rewind key, it is possible to skip or jump back in document units using the above index. A feature of the semiconductor memory is that this fast-forwarding or rewinding operation can be performed instantaneously.

Next, the memory card shown in FIG. 1 will be described. FIG. 2 is a block diagram showing the configuration of the memory card.

In FIG. 2, the memory card includes an address decoder 14, a batch erasable programmable read only memory (hereinafter abbreviated as F-EEPROM) 15, 16,
17 and 18 are included. The memory card shown in FIG. 2 includes four F-EEPROMs 15-18. Each FE
A lower address of the address bus and a data bus are connected in parallel to the EPROMs 15 to 18, respectively. Further, each of the F-EEPROMs 15 to 18 has a write enable signal WE for writing data, and erase signals ERASE and F-EEPRO for collectively erasing data.
Chip select signals CS1 to C for selecting M15 to 18
S4 is input respectively. Chip select signal C
S1 to CS4 are signals obtained by decoding the upper address of the address bus by the address decoder 14, the chip select signals CS1 to CS4 are exclusive, and the chip select signals CS1 to CS4 are true F.
Only the EEPROM can write or read data.

The address decoder 14 has an F-EEPR.
A card enable signal CE for disconnecting all of the OMs 15-18 from the data bus is input. When the card enable signal CE becomes true, all the chip select signals CS1 to CS4 are decoded to become false.

Next, the operation of the insert recording of the information recording / reproducing apparatus configured as described above will be described. FIG. 3 is a flowchart for explaining the operation of insertion recording. Figure 4
FIG. 9 is a diagram for explaining the operation of insertion recording. FIG. 5 is a diagram for explaining the state of the index during insertion recording. Hereinafter, in the present embodiment, the voice is recorded as a unit (hereinafter referred to as a document) divided into a plurality of pieces, and an index that is sub-information for each document is recorded, and the index is an address indicating a division of one document. Data, elapsed time data, and codes indicating the attributes of indexes are marked. For example, the index has 8 bytes as a unit, and the voice data has 34 bytes as a unit. The index is
The memory card 6 is sequentially stacked and recorded from the maximum address side to the minimum address side. Audio data is 34 bytes
Of these, 1 byte is used as a flag byte.

Referring to step S1 of FIG. 3 and (a) of FIG. 4, the information recording / reproducing apparatus is in the initial state.
The initial state means, for example, a state where reproduction is stopped at an arbitrary position. Next, in step S2, the system microcomputer 7 determines by the key switch 12 whether the recording is insertion recording. When it is recognized that the recording is insertion recording, the following preprocessing of insertion recording is performed in step S3.

Referring to FIG. 4B, the system microcomputer 7 first writes the jump flag J1 in the flag byte of the voice frame at the address of the recording start position, and also jumps to the flag byte of the voice frame of the jump destination. Write the flag j1.

Referring to FIG. 5, the system microcomputer 7
A jump mark code, a recording start position address (J1 address) and a jump destination address (j
One address, where the jump destination is the same as the physical EOD (end of data) address, is recorded. Next, the time mark code and the start time (TIME t1) are recorded in the index X2. Insertion time (TIM
Et2) is recorded at the end of recording.

Referring again to FIG. 4B, the I-REC
As indicated by the arrow, the system microcomputer 7 records the insertion data in the unrecorded portion of the memory card 6 in step S4 of FIG. Here, the recording start position is the physical EO.
Record from D.

Next, with reference to FIG. 4C, in step S5 of FIG. 3, the system microcomputer 7 confirms whether or not the insert button of the key switch 12 is released. When it is confirmed that the insert button has been released, the system microcomputer 7 executes a post-disposition process after insert recording as described below.

First, the system microcomputer 7 writes the jump flag J2 in the flag byte of the frame at the address at the recording end position. Next, a jump mark code and a recording end position address (J2
Address) and return address (J1 address, where
The return destination is the same address as the recording start position. ) Is recorded. Next, the insertion section time (TIME t2) is recorded in the time adjustment index X2. Next, the physical EOD position is recorded in the index X4.

Next, in step S7 of FIG. 3, the system microcomputer 7 completes recording and shifts to the stop mode.

Next, the reproducing operation of the inserted portion will be described. FIG. 6 is a flow chart for explaining the reproduction operation of the insert recording.

Referring to FIG. 4D, in step S11 of FIG. 6, the system microcomputer 7 causes the system microcomputer 7 of FIG.
Voice is reproduced from IP1.

Next, in step S12, the system microcomputer 7 checks the flag byte of the audio frame.

When the system microcomputer 7 detects the jump flag in the flag byte, in step S13,
Only the index of the jump mark code is retrieved from the index shown in FIG. 5, and the address currently being reproduced is compared with the address written in the index. That is, the J1 address and the J2 address are to be compared. Since the address currently being reproduced is equal to the J1 address, the system microcomputer 7 sets the index X shown in FIG.
The jump destination address (j1 address) is fetched from 1. Next, in step S14, the IP of FIG.
A jump is executed as shown in 2. Here, the jump flag J1 at the jump destination is set to be ignored.

Thereafter, steps S11 to S14 are repeated in the same manner, and when the system microcomputer 7 detects the next jump flag J2 during reproduction at IP3 in FIG. 4 (d), it jumps from the index in FIG. address)
Take out and perform a jump as shown in IP4
As shown in 5, reproduction is started again from the insertion position.

Next, the operation during rewinding will be described with reference to FIG. At the time of rewind,
The difference from the reproduction is that the relationship between the comparison target, that is, the jump source address and the jump destination address is reversed when searching only the index.

For example, from IR1 of FIG. 4 (e), the system microcomputer 7 continues the rewind while checking the flag byte. Next, when the system microcomputer 7 detects a jump flag in the flag byte, it searches only the index of the jump mark code from the index of FIG. 5 and compares the current address with the address written in the index. That is, the j1 address and the J1 address of the index X3 are to be compared. In this case, since the current address is equal to the J1 address of the index X3, the jump destination address (J2 address) is taken out from the index X3, and as shown in IR2. To jump to. Here, the jump flag J2 at the jump destination is set to be ignored.

Next, when the system microcomputer 7 detects the next jump flag j1 during rewinding by IR3, the address of the jump destination (J1 address) is extracted from the index of FIG. The jump is executed to continue the rewind as indicated by IR5.

By the above insertion recording operation, the insertion voice can be equivalently inserted at an arbitrary position of the voice information already recorded. Since this operation is executed in real time, the operability is greatly improved. Be improved.

Next, the recording operation of overwrite recording will be described. FIG. 7 is a flow chart for explaining the recording operation of overwrite recording. FIG. 8 is a diagram for explaining the operation of overwrite recording. FIG. 9 is a diagram for explaining the state of the index during overwriting recording.

First, in step S21 of FIG. 7, the information recording / reproducing apparatus is in the initial state. Here, the initial state means a state in which reproduction is stopped at an arbitrary position, as shown in FIG. 8A, for example.

Next, in step S22, the system microcomputer 7 confirms whether or not the key switch 12 has shifted to overwriting recording.

When it is confirmed that the recording has been overwritten,
In step S23, the system microcomputer 7 performs the following pre-processing for overwriting recording.

First, as shown in FIG. 8B, the system microcomputer 7 writes the jump flag K1 in the flag byte of the frame at the address of the recording start position, and also jumps to the flag byte of the jump destination audio frame. Write the flag k1.

Next, the jump mark code, the recording start position address (K1 address) and the jump destination address (k1 address, the jump destination is the physical EOD address) are recorded in the index X1 shown in FIG.

Next, in step S24 of FIG. 7, the system microcomputer 7 records the voice data in the unrecorded portion of the memory card 6 as indicated by the solid arrow in FIG. At this time, the system microcomputer 7 counts up the address of the portion to be overwritten by the amount corresponding to the overwriting recording time as indicated by the broken line arrow.

Next, in step S25, the system microcomputer 7 confirms whether or not the key switch 12 has moved to the end of recording.

When recognizing that the recording has ended, the system microcomputer 7 executes the following after-recording termination processing in step S26.

First, as shown in FIG. 8C, the system microcomputer 7 writes the jump flag K2 in the flag byte of the frame at the address of the recording end position, and also jumps to the flag byte of the audio frame of the return destination. Flag k2
To write. Next, the jump mark code, the recording end position address (K2 address) and the jump destination address (k2 address) are also recorded in the index x2 in FIG. Here, the k2 address is the address of the portion corresponding to the overwrite time.

Next, at the index x3 in FIG. 9, the physical E
Record OD1. Next, in step S27, the system microcomputer 7 ends the recording and shifts to the stop mode.

Next, the reproducing operation of the overwritten portion will be described. FIG. 10 is a flow chart for explaining the reproducing operation of the overwriting recording.

First, in step S31, the system microcomputer 7 reproduces the audio data from EP1 in (d) of FIG.

Next, in step S32, the system microcomputer 7 checks the flag byte of the audio frame to detect the jump flag.

When the jump flag is detected, step S
At 33, the system microcomputer 7 searches only the index of the jump mark code from the index of FIG. 9, and compares the current address with the address written in the index. That is, the K1 address and the k2 address are to be compared. The current address is K1
Since it is equal to the address, the jump destination address (k1 address) is extracted from the index x1.

Next, the system microcomputer 7 executes a jump as shown in EP2 of FIG. 8 (d). Here, the jump flag k1 at the jump destination is set to be ignored.

Thereafter, steps S31 to S34 are repeated in the same manner, and when the system microcomputer 7 detects the next jump flag K2 during reproduction in EP3 of FIG. 8D, it jumps from the index of FIG. 9 to the address of the jump destination ( (k2 address) is taken out, a jump is executed as shown in EP4, and then the reproducing operation is continued as shown in EP5.

Next, the operation at the time of rewinding will be described with reference to FIG. At the time of rewind,
The difference from the reproduction is that the relationship between the comparison target, that is, the jump source address and the jump destination address is reversed when searching only the index.

Further, the system microcomputer 7 continues the rewind while checking the flag byte from ER1 in FIG. 8 (e).

Next, when the system microcomputer 7 detects a jump flag in the flag byte, it searches only the index of the jump mark code from the index of FIG. 9 and compares the current address with the address written in the index. . That is, the k1 address and the k2 address are to be compared. Since the current address is equal to the k2 address, the jump destination address (K2 address) is fetched from the index x2 and the jump is executed as indicated by ER2. Here, the jump flag K2 at the jump destination is set to be ignored.

Next, when the system microcomputer 7 detects the next jump flag k1 during rewinding at ER3, the address of the jump destination (K1 address) is extracted from the index of FIG. 9 in the same manner as above, and as shown at ER4. After executing the jump, the rewind is continued as indicated by ER5.

By the above overwrite recording operation, the overwrite audio data can be overwritten at an arbitrary position of the already recorded audio data, and the overwrite recording operation can be executed in real time. Operability is greatly improved.

Further, in the above-mentioned information recording / reproducing apparatus, the index records the address data indicating the division of one document, the elapsed time data, the code indicating the characteristic of the index, and the like. Hereinafter, the index for each document will be referred to as an E mark index, and the index written when the insertion recording is performed is referred to as a time index. In the time index, the section time of the insert recording and the elapsed time when the insert recording is started are recorded.

The updating operation of the skip table of the information recording / reproducing apparatus configured as described above will be described below. The skip table is a table that stores information referred to during a skip operation. The skip table is updated after the insert recording is performed, or when a new document is added or when the document is deleted. FIG. 11 is a flowchart illustrating the skip table update operation.

First, in step S41, the section time is recorded during insertion recording. Next, in step S42, only the E mark index is taken out from the index after the insertion recording is completed and transferred to the work RAM (random access memory) provided in the system microcomputer 7.

Next, in step S43, the working R
Using the AM data and the index time index data, the correct elapsed time of each document is calculated by the time correction algorithm described below, and this is used as the skip table.

Next, in step S44, in order to simplify the skip execution, the above skip tables are rearranged based on the elapsed time.

The above steps will be described in more detail below. First, with respect to step S41 shown in FIG. 11, since the section time is recorded by the insertion recording described with reference to FIGS. 3 and 4, the following description will be omitted.

Next, step S42 shown in FIG. 11 will be described in detail. FIG. 12 is a diagram illustrating an index and a skip table.

In FIG. 12, E1 represents the index of the first written document, En represents the index of the nth written document, and Enm
ax represents the index of the last written document. E1a, E2a, Ena, and Enmaxa include the address of the E mark, that is, the start address of the document, and E1t, E2t, Ent, and Enmaxt include the start time when the document was recorded. Here, since the E mark, which is a document delimiter, can be written anywhere, the order written in the index is not necessarily the order of elapsed time. Further, in FIG. 12, T1, T2, and Tn represent time indexes, and
1t, T2t, and Tnt include the section time of the insertion recording, and T
1b, T2b, and Tnb include the elapsed time when the insertion recording is started.

Next, a method of creating a skip table from an index including each data as described above will be described. FIG. 13 is a flowchart illustrating a procedure for creating a skip table. In the present embodiment, since the non-volatile batch erasing type memory is used for the memory card 6, there is a characteristic that new recording cannot be performed until the batch erasing area is erased. However, only the E mark index is recorded in the work RAM provided in the system microcomputer 7. As a result, the skip table can be updated in real time, and since the skip table is configured with a minimum amount of data, the work RAM can be effectively used.

First, in step S51, the index pointer is set to the maximum address.

Next, in step S52, the pointer of the work RAM of the transfer destination is initialized.

Next, the mark code is read from the index shown in FIG. Next, in step S54, it is confirmed whether or not the read mark code indicates the E mark index. If it is not the E mark index, the process proceeds to step S57, and if it is the E mark index, the process proceeds to step S55.

Next, in step S55, the E mark index is transferred to the work RAM.

Next, in step S56, the work RA is used.
Update the pointer of M. Next, in step S57, the pointer of the index is updated, the process proceeds to step S53, and the subsequent processing is continued.

By the above processing, the skip table is created in the work RAM of the system microcomputer 7 from the index shown in FIG. Here, S1a and S shown in FIG.
2S, Sna, Snmaxa include the start address of the document, and S1t, S2t, Snt, Snmaxt include the start time when the document was recorded.

At this stage, the skip table has not been corrected for the elapsed time. For example, in the example of FIG. 12, the insert recording is executed n times after E1 is recorded. Therefore, when the start elapsed time of the insertion recording is smaller than Snt, Snt is the target of time correction.

Next, step S43 shown in FIG. 11 will be described in detail. FIG. 14 is a flowchart illustrating an algorithm for time correction. Each symbol shown in FIG. 14 corresponds to each symbol shown in FIG.

The time correction algorithm will be described with S1t as the correction target. The initial value of S1t is the same as E1t. For S1t, the insertion recording start times of the time indexes included in the S1 search target area shown in FIG. 13 are sequentially compared. That is, first, T1b is compared with S1t, and if T1b <S1t, the insertion recording section time T1t is added to S1t. As a result, S1t
Becomes S1t + T1t. Similarly, T2b <S1t
Then, S1t becomes S1t + T2t, and Tnb <S1
If t, S1t becomes S1t + Tnt. The above correction is performed in order. Next, the correction target is S2t. The initial value of S2t is the same as E2t. For S2t, correction is performed in the same manner as above using the time index included in the S2 search target area shown in FIG. The above operation is repeated up to Snmax to correct all Snt.

In the above algorithm, the elapsed time Ent is correct at the time when the document is started to be written, that is, when the E mark is recorded, and the elapsed time Tnb is correct at the time when the insertion recording is started.
Events such as the recording of the E mark and the start of insertion recording are recorded by stacking them in the order in which the events occur from the maximum address side of the index.

In the above-mentioned time correction, the insertion recording is explained, but the start time when the document is recorded is similarly corrected when the E mark is erased by overwriting recording or when the E mark is newly recorded. be able to.

Next, step S44 shown in FIG. 11 will be described in detail. Since the E-marks can be recorded anywhere in the skip table created in step S43 of FIG. 11, they are not necessarily arranged in order of elapsed time. When the skip is executed, the load on the system microcomputer 7 is lighter if they are arranged in the order of elapsed time. Therefore, if necessary, the skip tables are rearranged in ascending order or descending order of the elapsed time. Here, S shown in FIG.
The address of na is an absolute address and is unchanged.

As described above, by recording the minimum index, the elapsed time of the skip destination can be specified even if the beginning elapsed time of the document is shifted by the insert recording, and the skip operation can be performed easily. Can
The operability of the device is significantly improved.

In the above embodiment, the case of using the non-volatile batch erasing type memory has been described. However, in the case of using the rewritable semiconductor memory at any time, the skip table is directly recorded in the semiconductor memory and when the insertion recording is finished Then, the same effect as above can be obtained by directly adding the insertion section time to the elapsed time data of the skip table of the document after the insertion recording and rewriting the elapsed time data of the skip table.

Next, the store / recall operation will be described. Here, “store” refers to temporarily remembering the pointer, and “recall” refers to restoring the pointer. FIG. 15 is a flowchart explaining the store / recall operation.

First, in step S71, the device is assumed to be in a normal operation state. Next, in step S72, it is confirmed whether or not the store key is pressed. If the store key is pressed, the process proceeds to step S73, and if not, the process proceeds to step S71.

When it is determined in step S72 that the store key is pressed, the identity determination data is temporarily stored in the work RAM of the system microcomputer 7 in step S73. Here, the identity determination data refers to the frame data of the audio data first recorded in the mounted memory card 6, the index data recorded first, and the pointer at the end of the index.

Next, in step S74, the apparatus shifts to the store operation state. Next, in step S75, it is confirmed whether or not the recall key has been pressed. If the recall key is pressed, the process proceeds to step S76,
If it has not been pressed, the process proceeds to step S74.

If the recall key is pressed, it is determined in step S76 whether the memory card inserted by the above-mentioned memory card identifying method is the same as the memory card in which the identity determination data is stored. Check. If the memory cards are the same, the process proceeds to step S78, and if they are different, the process proceeds to step S81. In this step, the same memory card is checked by the above-described method of identifying the memory card, but the identity may be checked using an ID number, a serial number, or the like.

Next, in step S78, it is confirmed whether or not the last pointer stored in the index is the same. If they are the same, the process proceeds to step S79,
If they are different, the process proceeds to step S80.

If the pointers are the same, it can be seen that no recording has been performed, so the recall operation is executed as it is in step S79.

On the other hand, when the pointers are different, since the recording has been performed, there may be a difference in elapsed time. Therefore, the conditional recall operation described below is performed in step S8.
Run at 0. Conditional recall operation means that if only overwriting recording or append recording is performed, there is no difference in elapsed time, so the recall operation is executed as it is, and if insertion recording is performed, the elapsed time must be corrected. , The elapsed time is corrected by the inserted recording section time to the elapsed time before the stored time. The correction of the elapsed time is executed by the time correction described with reference to FIGS.

After the conditional recall operation and the recall operation are completed, the process proceeds to step S71.

If it is determined in step S76 that the memory card is different, a predetermined warning process or the like is performed to notify the user that the memory card is different in step S81, and the process returns to step S74. Transition to the store operation state.

According to the above operation, if the same memory card is not recorded, the recall operation is executed as it is, if it is recorded, the conditional recall operation is executed, and if the card is different, a warning is issued. It is possible to perform operations such as processing and reject the recall operation.

Next, the transition relationship between the states of the above store / recall operation will be described. FIG. 16 is a diagram for explaining the state transition of the store / recall operation.

First, the store / recall operation for the same card will be described. First, the normal operation state N1 of FIG. 16 is set as an initial state. At this stage, nothing is stored in the work RAM of the system microcomputer 7.

Next, when the store key is pressed (SM
1), the system microcomputer 7 stores the address and elapsed time of the inserted memory card 6 and the identity determination data in the work RAM, and shifts to the store operation state SM2.

Here, in the store operation state SM2, the same operation as in the normal operation state N1 is possible, but in this case, it is assumed that only the reproduction system operation is performed.

Next, the memory card 6 may be removed from the main body of the apparatus (SM3), and after working with another memory card, the stored memory card may be inserted (SM4).

Next, when the recall key is pressed (SM
5), the system microcomputer 7 compares the identity determination data stored in the work RAM with the data of the inserted memory card.

In this case, since only the reproducing operation is performed and the same card is used, the recall operation is executed (SM9).

After execution of the recall operation, the pointer is instantly returned to return to the normal operation state (N1).

Next, when the newly inserted card is the same card but the recording operation is performed, the store / store
The recall operation will be described. First, as above
The normal operation state N1 is the initial state. At this stage, nothing is stored in the work RAM of the system microcomputer 7.

Next, when the store key is pressed (SM
1), the system microcomputer 7 stores the address, elapsed time, and identity determination data of the memory card 6 currently inserted in the work RAM. After storing, the state shifts to the store operation state SM2.

Here, also in the store operation state SM2, the same operation as in the normal operation state N1 can be performed. In this case, not only the playback system operation but also the recording system operation is performed.

Next, the memory card 6 once inserted
May be pulled out (SM3) to work with another memory card 6, or the stored memory card 6 may be inserted (SM4). The memory card 6 once pulled out as described above may be recorded by another device, and it is important to check the recording state thereafter.

Next, when the recall key is pressed (SM
5), the system microcomputer 7 compares the identity determination data stored in the work RAM with the data of the inserted memory card.

In this case, the memory cards are the same,
Since the recording is being performed, it is determined that the recording is performed by comparing the pointer at the end of the index as described above, and the conditional recall operation is executed (SM
8).

After the execution, the pointer is sequentially returned to return to the normal operation state N1. Next, an operation of rejecting the recall operation when a different memory card is inserted will be described.

First, it is assumed that the apparatus is in the normal operation state N1 as an initial state. At this stage, it is assumed that nothing is stored in the work RAM of the system microcomputer 7.

Next, when the store key is pressed (SM
1), the system microcomputer 7 stores the address, elapsed time, and identity determination data of the memory card 6 currently inserted in the work RAM. After storing, the state shifts to the store operation state SM2.

In the store operation state SM2, the same operation as in the normal operation state N1 is possible.

Next, it is assumed that a memory card 6 different from the stored memory card 6 is inserted (SM3, SM
4).

At this time, if the recall key is pressed (S
M5), the system microcomputer 7 compares the identity determination data stored in the work RAM with the data of the newly inserted memory card. In this case, since the newly inserted memory card is a memory card that is completely different from the stored memory card, the recall operation cannot be executed. Therefore, processing such as warning (SM7) is performed, and the operation shifts to the store operation state SM2. Here, in the case where the stored card is not at hand, it may be possible to forcibly return to the normal operation state N1 (SM10).

[0120]

In the information recording / reproducing apparatus according to the first aspect, the information stored in the semiconductor memory device can be newly reproduced from a predetermined position, and the operability can be improved.

In the information recording / reproducing apparatus according to the second aspect, if the newly mounted recording medium is different from the recording medium in which the predetermined position is recorded, the reproducing operation from the predetermined position can be rejected, so that the erroneous operation is prevented. It becomes possible to improve the operability.

In the information recording / reproducing apparatus according to the third aspect, according to the recording state of the information after recording the predetermined position,
Since the attribute information can be corrected, the correct attribute information can always be used, malfunctions and the like are eliminated, and operability is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an information recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of the memory card shown in FIG.

FIG. 3 is a flowchart illustrating a recording operation of insert recording.

FIG. 4 is a diagram illustrating an operation of insertion recording.

FIG. 5 is a diagram illustrating a state of indexes during insertion recording.

FIG. 6 is a flowchart illustrating a reproduction operation of an insert recording.

FIG. 7 is a flowchart illustrating a recording operation of overwrite recording.

FIG. 8 is a diagram illustrating an operation of overwrite recording.

FIG. 9 is a diagram illustrating a state of an index during overwriting recording.

FIG. 10 is a flowchart illustrating a reproduction operation of overwrite recording.

FIG. 11 is a flowchart illustrating a skip table update procedure.

FIG. 12 is a diagram illustrating an index and a skip table.

FIG. 13 is a flowchart illustrating a procedure for creating a skip table.

FIG. 14 is a flowchart illustrating an algorithm for time correction.

FIG. 15 is a flowchart illustrating a store / recall operation.

FIG. 16 is a diagram illustrating state transition of store / recall operation.

[Explanation of symbols]

 1 main body 2 microphone 3, 10 amplifier 4 AD converter 5 audio compression circuit 6 memory card 7 system microcomputer 8 audio decompression circuit 9 DA converter 11 speaker 12 key switch 13 display

Claims (3)

[Claims] 1. An information recording / reproducing apparatus for recording or reproducing information using a removable recording medium including a semiconductor memory device, wherein the recording is performed at a predetermined position of information stored in the semiconductor memory device. Means for determining whether or not the newly installed recording medium is the same recording medium as the recording medium recording the predetermined position in the recording means, and the same recording by the determining means An information recording / reproducing apparatus including a reproducing unit that reproduces information from the predetermined position when it is determined to be a medium. 2. An information recording / reproducing apparatus for recording or reproducing information using a removable recording medium including a semiconductor storage device, wherein the recording is performed at a predetermined position of the information stored in the semiconductor storage device. Means, reproducing means for reproducing information from the predetermined position, and determining whether or not the newly mounted recording medium is the same recording medium as the recording medium recording the predetermined position in the recording means. An information recording / reproducing apparatus including: a determining unit that determines whether the recording medium is a different recording medium and a rejecting unit that rejects the reproducing operation from the predetermined position when the determining unit determines that the recording medium is different. 3. An information recording / reproducing apparatus for recording or reproducing information and attribute information of the information using a removable recording medium including a semiconductor memory device, the information recording / reproducing apparatus comprising: The recording means for recording the predetermined position, the reproducing means for reproducing information from the predetermined position, and the newly mounted recording means are the same recording medium as the recording medium recording the predetermined position in the recording means. If it is determined that the same recording medium is determined by the determination unit that determines whether or not there is the attribute information, the attribute information is set in accordance with the recording state of the information after recording the predetermined position in the recording unit. An information recording / reproducing apparatus including a correcting unit for correcting.