JPH09147529A - Updating apparatus for management information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an updating apparatus by which a voice in a desired part is reproduced easily and quickly by a method wherein, regarding a designated track, it is not required for a user to designate a dividing position thanks to a manageable editing function by which the track can be divided automatically at every prescribed time. SOLUTION: In a track before a dividing processing operation, voice data is recorded continuously in units of a track according to track numbers in a first track M1 onward. At this time, a keying operation in a track dividing mode in which a track number which is track-divided from a recorded track is performed. When a second track is instructed so as to be divided, a time interval for track dividing is set at five minutes in advance on the side of an apparatus, and the second track M2 whose reproducing time is 28 minutes is divided at every five minutes by making use of its start address T as a starting point. As a result, the track M2 is divided automatically into track numbers M2 to M7 so as to be edited. Thereby, it is not required for a user to designate a dividing position, and a voice in a desired part can be reproduced easily and quickly by access to every track.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management information updating device for a disk-shaped recording medium, which updates management information for managing recording / reproducing operation of audio data in track units.

[0002]

2. Description of the Related Art Disc rewritable disc-shaped recording media on which a user can record music data and the like are known. In such disc media, there are already recorded areas such as music and other areas. Data area for managing recording area (user TOC, UT
OC) is provided, and this management data is also rewritable according to operations such as recording, editing, and erasing.

When recording a certain piece of music, for example, the recording device searches the U-TOC for an unrecorded area on the disc and records the audio data there. . Further, in the reproducing apparatus, the area in which the music (track) to be reproduced is recorded is U
-ToC can be discriminated from the TOC, and the area can be accessed to perform the reproducing operation. In other words, the beginning of each song can be easily reproduced.

[0004]

By the way, when a user records music, voice, etc. in a mini disk system, when a microphone is connected to input voice, another audio device or the like is connected in line. In the case of inputting an analog audio signal, it may be considered that the reproduced digital audio signal is directly input from a compact disc (CD) player, a DAT player or the like.

Here, considering the case of directly inputting a digital audio signal from a CD, since data such as a track number (song number) is also input in addition to the audio data, the side of the mini disk recording apparatus which is recording the data. In, the music (track) and the break of the music can be known, and the track can be divided in accordance with the automatically recorded audio data. For example, C with 10 songs
If the digital dubbing from D is performed, the recorded audio data can be automatically managed as 10 songs for each song even on the mini disc.

However, in the case of recording by microphone input or recording by analog line connection, only a voice signal is supplied, and the break (ie, the change point of the track number) of conversation voice, music, etc. cannot be grasped on the minidisk recording device side. Therefore, when a conference or the like is recorded by inputting a microphone, all the voices recorded from the start of recording to the end of recording are grasped and recorded as one track.

[0007] Since the cue access is a method in which the head position of a track is accessed for reproduction, when reproducing a disc on which a conference or the like is recorded, for example, it is desired to reproduce only a part of the conference contents. In that case, there is a problem that the operation becomes troublesome.

That is, since all recorded conference contents are managed as one track on the disc, the desired part (intermediate part) cannot be found and accessed, and therefore high-speed search reproduction is possible. You have to search for the desired part. For example, when recording a 30-minute conference and then wanting to hear the content of a comment about 25 minutes later, a high-speed search for 25 minutes must be performed, and the reproduction operation is very inconvenient.

In such a case, after recording, the user performs an editing operation (divide operation) for dividing one track into a plurality of tracks at a predetermined interval to perform U-TOC.
Rewriting the data so that the recorded data is managed as a plurality of tracks will be convenient during playback. For example, if the track of the recorded data of the conference content is divided every 5 minutes, if the user wants to hear the sound after 25 minutes, the fifth track (that is, the sound data from the 25 minute point) is set to the beginning, and If a desired voice is searched for at a high speed by a point, a desired voice can be easily reproduced.

However, the fact that such editing (divide editing) must be performed after recording is
There is a problem that it is not always easy to operate because it requires understanding of the editing function and complicated editing operation.

[0011]

In view of the above problems, the present invention provides an editing function capable of dividing a track already recorded on a recording medium at predetermined time intervals to improve usability. The purpose is to improve.

For this reason, a track division mode is set in the recording device for recording the audio data and the management information for managing the recording or reproducing operation of the audio data for each track as one audio data unit. Mode operating means, track specifying operating means for specifying a track to be divided by the track dividing mode, and when the track dividing mode is set by the mode operating means, among the tracks recorded on the recording medium, A control unit is provided which can perform control for rewriting the management information so that the track designated by the track designation operation unit is divided into a plurality of tracks with a predetermined time width.

Further, there is provided a track length setting operation means capable of variably setting a predetermined time which is a unit length of track division in the track division mode, and the control means has a predetermined time according to the operation of the track length setting operation means. Allows variable setting.

According to the above construction, the editing function of dividing the track recorded on the disc after recording into track units at predetermined time intervals by the track division mode can be obtained, and after this editing, at each division position. Head-on access becomes possible, and when you want to hear only a specific part of the recorded voice, the search becomes very easy.

Further, since the length (time) of one track can be changed for the tracks that are automatically divided in this way, the user can access at the time of reproduction according to the content of the recorded voice. You can set the length of the track as you see fit.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a recording / reproducing apparatus using a magneto-optical disk as a recording medium will be described as an embodiment of a management information updating apparatus of the present invention with reference to FIGS. To do. 1. 1. Configuration of recording / reproducing device 2. U-TOC sector 3. Processing in track division mode (when track division time is fixed) 4. 4. Processing in track division mode (when the track division time is variable) 5. Processing in the track division mode (when the track is divided into multiple parts)

1. Configuration of Recording / Reproducing Apparatus FIG. 1 shows a block diagram of a main part of the recording / reproducing apparatus of the embodiment. The magneto-optical disk 1 on which audio data is recorded is driven to rotate by a spindle motor 2. The optical head 3 irradiates the magneto-optical disk 1 with laser light during recording / reproduction.

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 the reflected light by the magnetic Kerr effect during reproduction. 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 2
It is held by a shaft 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.

Further, a magnetic head 6a is arranged at a position facing the optical head 3 with the disk 1 interposed therebetween. The magnetic head 6a performs an operation of applying a magnetic field modulated by the supplied data to the magneto-optical disk 1. 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 1 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 7. The RF amplifier 7 performs an arithmetic operation on the supplied information,
A reproduction RF signal, a tracking error signal TE, a focus error signal FE, groove information (absolute position information recorded as a pre-groove (wobbling groove) on the magneto-optical disk 1) GFM, and the like are extracted. 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 supplied with the tracking error signal TE, the 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 sled 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 the address information.
This address information is supplied to the system controller 11 and used for various control operations. Further, the reproduction RF signal is subjected to decoding processing such as EFM demodulation and CIRC in the encoder / decoder section 8. At this time, the address and the address included in the reproduction RF signal as data are
Sub-codes are also extracted, and the system controller 11
Supplied to

In the encoder / decoder section 8, EFM demodulation,
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 1 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 reproduction data is transferred at 0.3 Mbit / sec, and is supplied to the encoder / decoder section 14. Then, the signal is subjected to reproduction signal processing such as decoding processing for the audio compression processing, converted into an analog signal by the D / A converter 15, supplied from the output terminal 16 to a predetermined amplification circuit section, and reproduced and output. For example, they are output as L, R analog audio signals.

When the recording operation is performed on the magneto-optical disk 1, the recording signal (analog audio signal) supplied to the input terminal 17 is converted into digital data by the A / D converter 18, Encoder / decoder unit 1
4 and subjected to audio compression encoding processing. The recording data compressed by the encoder / decoder 14 is temporarily written to the buffer memory 13 by the memory controller 12. Then, when a predetermined amount or more of data is accumulated in the buffer memory 13, the data is read in predetermined data units and sent to the encoder / decoder unit 8. Then, the encoder / decoder unit 8 sets the CIRC
After the encoding process such as encoding and EFM modulation,
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 magneto-optical disk 1
Is applied by the magnetic head 6a. 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. Through the buffer memory 13, the recording operation for the audio data that is continuously input is intermittently performed.

The operation unit 19 is provided with various keys used for user operations. For example, a record key, a play key, a stop key, an AMS key, a fast forward key, a fast rewind key, etc. are provided.
Supplied to Further, in the recording / reproducing apparatus of this embodiment, as an editing function, an operation for further dividing the track specified by the user for the recorded audio data into a plurality of tracks is also possible. The display unit 20 is configured by, for example, a liquid crystal display, and performs an operation of displaying an operation state, a track number, time information, and the like based on the control of the system controller 11.

When the recording / reproducing operation is performed on the disc 1, the management information recorded on the disc 1, that is, P-TOC (pre-mastered TOC), U-T.
It is necessary to read OC (user TOC). The system controller 11 determines the address of the area to be recorded on the disk 1 and the address of the area to be reproduced according to the management information. This management information is held in the buffer memory 13. For this reason, in the buffer memory 13, a buffer area for the recording data / reproduced data and an area for holding these management information are divided and set. Then, when the disk 1 is loaded, the system controller 11 reads out the 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 operation on the disc 1.

The U-TOC is edited and rewritten in response to recording and erasing of data, but the system controller 11 stores this editing process in the buffer memory 13 every recording / erasing operation. -TOC information is performed, and the U-TOC area of the disc 1 is also rewritten at a predetermined timing according to the rewriting operation.

2. U-TOC sector Here, as management information for managing recording / reproducing operations of tracks (musical pieces, etc.) on the disc 1, a UT is used.
The OC sector will be described.

As TOC information, U-TOC and P-
Although the TOC is provided, this P-TOC is formed in the innermost pit area of the disk 1 and is read-only information. And the recordable area of the disc by P-TOC (recordable user area)
And management of positions such as a lead-out area and a U-TOC area. In the mini-disc system, a read-only optical disc (pre-mastered disc) in which all data is recorded in a pit form can be used, but in the case of a pre-mastered disc, the data is recorded in ROM by the P-TOC and recorded. It is also possible to manage the music that exists, and no U-TOC is formed. Detailed description of the P-TOC is omitted, and here, the U-TOC provided on the recordable magneto-optical disk will be described.

FIG. 2 shows the format of the U-TOC sector 0. In addition, as the U-TOC sector, sector 0 to sector 7 can be provided,
Sectors 1 and 4 are character information, and sector 2 is an area for recording the recording date and time. Here, disk 1
Only the U-TOC sector 0, which is necessarily required for the recording / reproducing operation, will be described. The U-TOC sector 0 is a data area in which management information is mainly recorded on music recorded by the user and on free areas in which new music can be recorded. For example disk 1
When attempting to record a certain piece of music, the system controller 11 searches for a free area on the disk from the U-TOC sector 0 and records audio data there. At the time of reproduction, the area in which the music to be reproduced is recorded is determined from U-TOC sector 0, and the reproduction operation is performed by accessing the area.

The data area (4 bytes × 588, 2352 bytes) of the U-TOC sector 0 has all 0s at the head position.
Alternatively, a synchronization pattern in which all 1-byte data are formed side by side is recorded. Then the cluster address (Clust
er H) (Cluster L) and an address to be a sector address (Sector) and mode information (MODE) are added by 4 bytes,
This is the header.

The sector is a data unit of 2352 bytes as described above, and 36 sectors make up one cluster. Regarding the synchronization pattern and address, this U-TO
Not only the C sector 0, but also a P-TOC sector and a data sector in which audio data is actually recorded are recorded in sector units. The cluster address consists of the upper address (Cluster H) and the lower address (Cluster L).
The sector address (Sector) is described by one byte. Next, the manufacturer code, model code, and track number (F
irst TNO), track number of last track (Last T
NO), data such as sector usage (Used sectors), disk serial number, and disk ID are recorded.

Further, in order to identify an area of a track (music or the like) or a free area recorded by the user by making it correspond to a management table section to be described later, various tables are used as a correspondence table instruction data section. Pointers (P-DFA, P-EMPTY, P-FRA, P-TNO1 to P-TN
O255) is recorded.

The table pointers (P-DFA to P-TNO25)
5) (01h)
There are provided 255 parts tables from (FFh) to (FFh). In each of the parts tables, a start address serving as a starting point, an end address serving as an end, and mode information (track mode) of the part are recorded. ing. In addition, since the parts indicated in each part table may be successively connected to other parts, link information indicating the part table in which the start address and the end address of the connected parts are recorded can be recorded. Have been. In the present specification, the numerical value with “h” is in a so-called hexadecimal notation. Further, a part refers to a track portion in which temporally continuous data is physically continuously recorded in one track.

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, and the part tables can be connected by specifying the part tables to be connected, for example, by the numbers (01h) to (FFh) given to the respective part tables.
In other words, in the management table section in the U-TOC sector 0, one parts table represents one part. For example, for a music composed of three parts connected, three parts connected by link information The position of the part is managed by the table. Note that the link information is actually indicated by a numerical value which is a byte position in the U-TOC sector 0 by a predetermined arithmetic processing. That is, the part table is designated as 304+ (link information) × 8 (byte).

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

The table pointer P-DFA is shown attached to a defective area on the magneto-optical disk 1, and is a single part table or a plurality of parts tables in which a track portion (= part) which is a defective area due to a scratch or the like is shown. The top parts table in is specified. In other words, if there is a defective part, (01h) to
Either (FFh) is recorded, and the corresponding parts table indicates the defective part by the 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 shown in the part table. If there is no other defective part, the link information is, for example, "(0
0h)]], and there is no link thereafter.

The table pointer P-EMPTY indicates the first part table of one or a plurality of unused part tables in the management table section. If there is an unused part 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 table specified by the table pointer P-EMPTY is sequentially specified by link information, and all unused part tables are connected on the management table section Is done.

The table pointer P-FRA indicates a writable free area (including an erasing area) on the magneto-optical disk 1, and 1 or the track portion (= part) to be the free area is indicated. The first part table in multiple part tables is specified. That is,
Table pointer P-FRA if free area exists
, Any one of (01h) to (FFh) is recorded.
In the corresponding parts table, parts as free areas are indicated by start and end addresses. Also, if there are a plurality of such parts, that is, if there are a plurality of parts tables,
The link information is sequentially specified up to the parts table where "(00h)" is displayed.

FIG. 3 schematically shows the management state of the parts which are the free area by using the parts table. This is because when the part (03h) (18h) (1Fh) (2Bh) (E3h) is set as a free area, 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. Note that the management form of the above-mentioned defective area and unused parts table is similar to this.

By the way, in the case of a magneto-optical disk in which no audio data such as music is recorded and there is no defect,
Parts table (01h) by table pointer P-FRA
Is specified, which indicates that the entire recordable user area of the disc is a free area. In this case, since the remaining part tables (02h) to (FFh) are not used, the part table (02h) is designated by the above-mentioned table pointer P-EMPTY, and the part table (02h) is not used. The parts table (03h) is specified as link information, and so on, so that the parts table (FFh) is linked. In this case, the link information of the parts table (FFh) is set to "(00h)" indicating that there is no connection thereafter. At this time, the parts table (0
As for 1h), the start address of the recordable user area is recorded as the start address, and the address immediately before the lead-out start address is recorded as the end address.

Table pointers P-TNO1 to P-TNO255 indicate tracks such as musical pieces recorded by the user on the magneto-optical disk 1. For example, table pointers
In P-TNO1, a parts table indicating a temporally leading part of one or a plurality of parts on which data of the first track is recorded is designated. For example, the track set as the first track is not divided on the disc,
In other words, if recorded in one part, the first
The recording area of the track is recorded as a start and end address in the parts table indicated by the table pointer P-TNO1.

Further, for example, when a music piece designated as the second track is discretely recorded in a plurality of parts on the disc, each part is designated in a temporal order in order to indicate the recording position of the second track. To be done. In other words, from the parts table specified by the table pointer P-TNO2, further parts tables are sequentially specified by the link information according to the temporal order, and the parts table whose link information is "(00h)" is linked. (The above-mentioned form similar to FIG. 3). In this way, for example, all the parts in which the data constituting the second song is recorded are sequentially designated and recorded, so that the data of the U-TOC sector 0 is used to reproduce the second song or the second song. When performing overwriting recording on the area (1), it becomes possible to access the optical head 3 and the magnetic head 6 to take out continuous music information from discrete parts, and perform recording using the recording area efficiently.

As described above, in the rewritable magneto-optical disk 1, area management on the disk is performed by the P-TOC, and music recorded in the recordable user area, free area and the like are performed by the U-TOC. Be done.

3. Processing in track division mode (when track division time is fixed) In the recording / reproducing apparatus having such a configuration, the magneto-optical disk 1 is used.
In the present embodiment, the audio data recorded on the magneto-optical disk 1 is further divided into tracks by a predetermined time unit. It is possible to do.

FIG. 4 shows an example of a user's operation procedure for performing track division as described above. For example, the user performs a key operation by operating the operation unit 19 described with reference to FIG. 1 so as to be in the track division mode, with the disc on which the tracks desired to be divided are recorded in the recording / reproducing apparatus according to the present embodiment. (Fig. 4
(A)). By the way, it is naturally conceivable that a plurality of tracks are recorded on the loaded disc in addition to the track which the user intends to divide. Therefore, next, the user performs an operation for designating the number (track number) of the track to be subjected to track division from the tracks recorded on the disc (FIG. 4B). After confirming that the designated and input track number is correct, an enter operation is performed (FIG. 4 (c)). The device receives this enter operation, and in this case, a process for dividing the specified track into tracks at preset fixed time intervals is performed on the device side (FIG. 4).
(D)).

FIG. 5 is a diagram showing an example of a change in the management form of tracks on a disc when track division is performed on a disc. In this case, it is shown that the second track is divided into tracks from the state where at least three tracks are recorded on the disc, and the track division time length here is set to 5 minutes. There is. In addition, the circle mark and the triangle mark shown in this figure indicate the start address and end address of each track. In the present specification, the track corresponding to the track number n will be referred to as the nth track. For example, the track with the track number 5 is the fifth track.

FIG. 5A shows the state of the tracks before the track division processing. In this figure, the first track M1, the second track M2, the third track
.. and audio data are continuously recorded in track units in accordance with the track number. Then, by the operation procedure described in FIG. 4, the second track M
If the track division is performed for 2 (the reproduction time in this case is 28 minutes), the track management form of the disc after the track division is updated as shown in FIG. 5B.

According to FIG. 5B, the first track M1 having a track number prior to the second track M2 is left unchanged. Then, the second track M2 having a reproduction time of 28 minutes starts from the start address T thereof and becomes 5
The track is divided into time intervals of minutes, and as a result, the second track M2 starts and the third track M starts.
Five tracks having a reproduction time length of 5 minutes, that is, the third track 4, the fourth track M4, the fifth track M5, and the sixth track M6 are formed. However, in this case, the last 5
The seventh track M7 having a reproduction time of 3 minutes, which is less than the reproduction time length of 1 minute, is formed. Therefore, in this case, the original second track M2 is divided into six tracks of the second track M2 to the seventh track M7 along the reproduction time axis. Along with this, the third track M3 (shown in FIG. 5A) before the track division processing is given a track number 8 and is updated to the eighth track M8 as shown in FIG. 5B. Further, if there are more tracks after the eighth track M8, these tracks will be sequentially updated so that the track numbers after the track number 9 are added.

As shown in FIGS. 4 and 5, FIG. 6 is a flow chart showing the processing operation when the track division is performed with the track division time fixedly set. The process shown in this figure is an operation at the time of executing the track division shown in FIG. In this routine, the system controller 11 first identifies the track number “N” designated and input by the user by the operation described in FIG.
In F102, "c = 0" is set for the variable c, and in the next step F103, "c = c + 1" is incremented for this variable c, and the process proceeds to step F104.

In step F104, the address T + cA
(T: start address of the Nth track, A: address amount corresponding to track division time) is calculated, and this address data T + cA is used as the track number “N + c”.
The start address of Then, the next step F105
In the above, the address located immediately before the address T + cA is the end address of the track number "N + (c-1)". That is, the track division position is set by the processing of steps F104 and F105.

For example, when the processing of steps F104 and F105 is made to correspond to FIG. 5, the start address T of the Nth track is the start address of the second track M2, and the address amount A is 5 minutes of the track division time length. Will have a width corresponding to. If the variable c = 1, the third step shown in FIG.
The start address of track M3 is obtained, and step F1
As a result of 05, the end address of the second track M2 shown in FIG. 5 (b) can be obtained.

In the next step F106, the address T
+ CA is compared with the end address Tmax of the Nth track before the track division, and whether T + cA ≦ Tmax is satisfied, that is, the start address of the track number “N + c” obtained in step F104 is the Nth specified for division. It is determined whether it is in the track. here,
If it is determined that T + cA ≦ Tmax, the system controller 11 proceeds to step F107,
Each address obtained in F104 and F105 is stored in the internal memory as TOC rewriting data. After this step
The series of processes shown in steps F103 to F107 is repeated until it is determined in F106 that T + cA ≦ Tmax is not satisfied.

For example, in the case of FIG. 5B, the processes of steps F103 to F107 are repeated from the second round onward,
[4th track M4 start address, 3rd track M3 end address], [5th track M5 start address, 4th track M4 end address], [6th track M6 start address, 5th track] M5 end address], [7th track M7 start address, 6th track M6 end address] to set the track division position, and the data at these addresses is used as U-TOC rewriting data in the buffer memory. The process of storing in 13 is performed.

Then, as described above, steps F103 to F107 are performed.
When the track division position is set by, it is finally determined in step F106 that T + cA ≦ Tmax is not satisfied. This is because the address T + cA obtained in the previous step F104 is the original Nth. This means that the track end address Tmax has been exceeded. For example, in the case of FIG. 5B, the address To at the position corresponding to the reproduction time of 5 minutes from the start address of the seventh track M7
Since v is set to T + cA, it is determined that Tov (= T + cA) ≦ Tmax.

In such a case, the system controller 11 proceeds to step F108, and on the buffer memory 13 based on the address data stored in the internal memory by the processing of steps F103 to F107 executed so far. The process of rewriting the U-TOC information of the disc is executed. Then, when the process of step F108 is completed, the track division mode is ended. The U-TOC information updated on the buffer memory 13 is then recorded on the disc 1 at a predetermined timing.

Under the condition that the variable c = 1, step F1
When the process proceeds to 08, that is, when the reproduction time of the original N-th track specified by the user for division is within the track division time, the track division mode is set without rewriting the U-TOC data. It will end.

By updating the U-TOC data in this way, the track having the designated track number is updated at predetermined time intervals, as shown in FIG. 5 (a) → (b). The track is divided into tracks (note that if the playback time lasting less than the predetermined time interval remains at the end, it is formed as the last divided track). For these divided tracks and the subsequent tracks, the track numbers N The incremented track number will be given.

4. Processing in the track division mode (when the track division time is variable) The track division in the above-described track division mode was performed based on the track division time set in advance. The configuration when the division time is changeable by the user will be described.

FIG. 7 shows an operation procedure of a user at the time of track division editing when the track division time can be changed and set. First, the user performs an operation to put the device into the track division mode, and then specifies the track number of the track to be divided into tracks (FIG. 7A).
→ Figure 7 (b)). Then, as the next operation procedure, the user variably sets the track division time length by a predetermined operation (FIG. 7C). Although the method of setting the track division time is not specifically shown, the track division time length that the user prefers is selected from a plurality of types of track division time length candidates prepared in advance. It is also possible that the user can arbitrarily set, for example, a predetermined time width by operating a ten-key pad, an up / down key, or the like. Then, after confirming the above setting items, the user performs an enter operation (FIG. 7 (d)), whereby the device performs a process of dividing the track of the specified track number into the set track division time units. Will be executed.

Although not particularly shown, the recorded content of the disk which is updated by performing the track division based on the track division time which is variably set as described above is based on the form described with reference to FIG. Therefore, when FIG. 5 is applied to this embodiment, for example, the second track M2 designated for division is divided at every track division time set by the user, and finally, at the set track division time. If the remaining playback time that does not meet is generated, this is set as the last track of the divided tracks. Further, the track numbers of the track number 2 and the subsequent tracks are sequentially incremented and given to the divided tracks and the subsequent tracks.

The flowchart of FIG. 8 shows the track division processing when the track division time can be changed and set. In this case, the system controller 11
Identifies the track number “N” designated and input by the user in step F201. Then, in this case, in the next step F202, a calculation for converting the set track division time m into the address amount B is performed. Although detailed description of this calculation is omitted here, it is calculated by making the track division time m correspond to the number of sectors or clusters that are recording units of the minidisk system, and obtaining the address amount corresponding to this sector or cluster number. It is possible to do.

In the subsequent steps F203 to F209, the data of the address amount A shown in FIG. 6 in the previous embodiment is replaced with the address amount B, and the process is obtained in steps F205 and F206 in step F208. 6 except that the address data is stored as U-TOC rewriting data.
Since the processing is the same as the processing of steps F102 to F108 described above, the description thereof will be omitted.

5. Processing in the track division mode (when the track is divided into a plurality of parts) By the way, in the recording / reproducing apparatus to which the management information updating apparatus of the present embodiment is applied, as described with reference to FIGS. 2 and 3, In some cases, one track is not necessarily recorded in continuous parts, but may be discretely recorded in a plurality of parts on the disc by repeating recording and erasing, for example. Therefore, hereinafter, as still another embodiment, a configuration that can be applied even when a track to be divided is discretely recorded on a disc in a plurality of parts will be described.

FIG. 9 shows an example of a management form of tracks recorded on the disc. In this figure, the start address and end address between each track and parts on the same track are indicated by a mark and a mark. In this case, of the first to fourth tracks M1 to M4 shown in FIG. 9A, the second track is discretely recorded in two parts M2 (1) and M2 (2). Has been done. In this case, the second track part M2 (1) has a reproduction time of 8 minutes, and the part M2 (2) has a reproduction time of 1 minute.
The reproduction time is 1 minute, and the reproduction time of the entire second track is 19 minutes. Two parts M of these 2nd trucks
2 (1) and M2 (2) have the end address of the part M2 (1) and the start address of the part M2 (2) shown in FIG.
Also, by linking with the link information described in FIG. 3, continuous reproduction is possible. When track division is performed on the second tracks M2 (1) and M2 (2) in the present embodiment, the track management mode on the disc is as shown in FIG. 9B.

FIG. 9B shows an example in which the second track is divided into tracks by the track division time of 5 minutes. It should be noted that the track division time according to the present embodiment may be either fixedly set in advance on the device side or variably set by the user. In this case, the second track shown in FIG. 9A has 5 tracks along the playback time axis as shown in FIG. 9B.
It is divided into a second track M2, a third track M3 (1) -M3 (2), and a fourth track M4 for each minute track division time,
Further, the last remaining four minute area is formed as the fifth track M5, and is consequently divided into four tracks.
At this time, the third track newly formed by the track division is, as shown in the figure, a part M3 (1) and a part 2 having a reproduction time of 3 minutes.
Formed by part M3 (2) with a minute playing time, a total playing time of 5 minutes is obtained. Further, as shown in FIG. 9A, the third track M3 and the fourth track M4, which are behind the second track before the track division, are formed by dividing the second track into second to fifth tracks. As a result, the track number is advanced, and as shown in FIG. 9 (b),
The tracks are managed as a sixth track M6 and a seventh track M7, respectively.

FIG. 10 is a flow chart showing the processing operation of the system controller 11 which enables the track division of the track in which the audio data is discretely recorded on the disk as described above. It
In this case, the processing operation under the configuration in which the track division time is fixedly set in advance is shown. Therefore, the operation for dividing the track by the user is based on FIG. 4, and the processing of FIG. 10 is an operation after the user's enter operation.

In this routine, first, step
In F301, the track number "N" designated by the user is identified, and in the next step F302, the start address of the designated Nth track is once defined as "T". For example, in the case of FIG. 9B, the start address of the second track M2 will be T first.

The system controller then steps
After proceeding to F303 and setting c = 0 for the variable c, the variable c is incremented to c = c + 1 in step F304, and the process proceeds to step F305.

In step F305, the address amount corresponding to the track division time is set to A, the address obtained by T + A, and the end address T of the part (current part) whose start address is the address T at the present time. for _PE, discriminates whether has a T + a ≧ T _PE.

If it is determined in the above step F305 that T + A≥T _PE is not satisfied, and if it is determined that the address T + A is within the current part, the process proceeds to step F306, where the above address T + A is set to the start address of the track number N + c. Is set as the address data D1. In the next step F307, the address immediately before the address T + A is set as the end address of the track number N + (c-1), and this is set as the address data D2. The address division data D1 and D2 thus obtained set the division position of the track between the track numbers N + c and N + (c-1). Next, the system controller 1
1 proceeds to step F308, and the above steps F306 and F307
After the address data D1 and D2 obtained in step S1 are stored in the internal memory as U-TOC rewriting data, the address T + A so far is newly defined as the address T and the process returns to step F304. .

In the present embodiment, step F3 described above
By performing a series of processing operations from 01 to F309, track division processing within the same part can be handled. Therefore, the processing operations of steps F301 to F310 are
Since it is substantially similar to the track division processing executed by the processing operation of steps F101 to F107 in FIG. 6 shown as the processing of the previous embodiment, the above step F301
The processes from F310 to F310 can correspond to the process of dividing the track formed by one part as in the previous embodiments.

In step F305, T + A ≧ T _PE
If it is determined that the address T + A exceeds the current part or coincides with the end address T _PE of the current part, the process proceeds to step F310 to end the current part. whether address T _PE coincides with the end address Tmax of the N tracks of the original designated split (T _PE = Tmax) is determined. If it is determined in step F310 that T _PE = Tmax, it is determined that there is no more divisible area for the specified Nth track, and the flow advances to step F320. Then, at the stage so far, step F308 or F3 described later
U− stored in the buffer RAM 13 in the processing of 15
The U-TOC is rewritten based on the TOC rewriting data, and the track division mode is ended.

On the other hand, in step F310, T _PE = Tm
If it is determined that the track division position is not ax, it is possible that the track division position can be set to the part connected next to the current part (hereinafter referred to as the next part) by the link information, and the process proceeds to step F311. Then, the process of obtaining the track division position is performed on and after the next part.

In step F311, the address T + A
Then, for the end address T _PE of the current part, the calculation of (T + A) −T _PE = X is performed to calculate the surplus address amount X.
In the case of FIG. 9B, for example, this surplus address amount X is the sixth track M6 when the address T is the start address of the part M3 (1) of the third track.
The address amount from the start address of the part to the address indicated by the triangle mark at the position where the reproduction time of 2 minutes has elapsed corresponds.

[0079] Then, in the next step F312, the start address of the next parts T _NS, also an end address of the next parts as T _NE, whether it is a T _NS + X ≧ T _NE, in other words a new track division position assuming the address T _NS + X as, this address T _NS +
Determine if X is in the next part.
Then, if it is determined that the address T _NS + X exists in the next part, the process proceeds to step F313, where the address T _NS + X is set to the start address of the track number N + c, and this is set as the data D3. In the next step F314, the address immediately before the address T _NS + X is set as the start address of the track number N + (c-1), and this is used as the data D4 to specify the track division position. Then, in step F315, the address data D3 and D4 are stored in the internal memory as U-TOC rewriting data, and in the next step F316, the existing address T _NS + X is newly changed to the address T _NS. Define
The process returns to step F304.

In step F312, T _NS + X ≧ T
It is determined to be _NE , and the address T _NS + X exceeds the end address T _NE of the next part, or the address T _NS + X.
If it is determined that the end address is equal to the end address T _NE of the next part, the process proceeds to the subsequent steps F317 to F319 to determine the track division position for the next part.

In step F317, it is determined whether T _NE = Tmax, that is, whether the end address T _{NE of the} part matches the end address Tmax of the Nth track designated for division, and here, T _NE = T
If it is determined that the value is max, the process proceeds to step F320 to execute the rewriting of the U-TOC based on the U-TOC rewriting data stored so far,
Exit the track division mode. On the other hand, T _NE =
If it is determined that it is not Tmax, step F318
Then, (T _NS + X) -T _NE = X is calculated, and a surplus address amount X is newly obtained. Then, in step F319, the existing address T _NS is newly set as the address T, and in step F3
I will be returned to 12.

As described above, by the process shown in FIG. 10, it is possible to perform track division even for tracks recorded discretely by a plurality of parts. In addition,
In order to correspond the processing operation shown in FIG. 10 to the case where the track division time length can be changed, for example, the track division time set by the user after step F302 is converted into an address amount, and thereafter, the track division time is set. This can be realized by processing the address amount corresponding to the time as "A".

The present invention is not limited to the above-described embodiments, but various modifications are possible. For example, the key regarding the track division mode is as follows.
It may be provided in a remote controller for infrared rays or the like for a recording / reproducing apparatus provided with the management information updating apparatus of the present invention, or a remote control operation unit provided in a connected headphone or microphone. Further, it is needless to say that the process for dividing the track is not limited to the examples shown in FIGS. 6, 7, and 10, and various types can be considered.

Further, as an embodiment, an example in which the management information updating device of the present invention is applied to a recording / reproducing device has been described, but the present invention can be applied to a recording or reproducing only device, and a so-called mini-recording device is also applicable. Not limited to the disk system, it can be applied to various disk recording / reproducing devices, tape recording / reproducing devices, and the like.

[0085]

As described above, according to the present invention, regarding the audio data recorded in track units on the recording medium,
For a specified track, the track is automatically divided every predetermined time and a manageable editing function is given,
For example, it is possible to easily and quickly reproduce the desired portion of audio by accessing each track without the user having to perform divide editing, in which the user specifies the track division position and edits the tracks one by one. It has the effect of improving. Further, by allowing the user to set various time intervals for track division, there is an effect that the most suitable automatic track division can be performed according to the recorded content.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main part of a recording / reproducing apparatus of an embodiment.

FIG. 2 is an explanatory diagram of a U-TOC sector on a disc.

FIG. 3 is an explanatory diagram of a link structure of U-TOC sectors in the disc.

FIG. 4 is an explanatory diagram showing a user operation regarding a track division mode (when the track division time is fixed) in the embodiment.

FIG. 5 is an explanatory diagram showing a track management state by a track division process in the embodiment.

FIG. 6 is a flowchart of a track division process according to the embodiment.

FIG. 7 is an explanatory diagram showing a user operation regarding a track division mode (when the track division time is variable) in another embodiment.

FIG. 8 is a flowchart of a track division process according to another embodiment.

FIG. 9 is an explanatory diagram showing a track management state by a track division process in another embodiment.

FIG. 10 is a flowchart of a track division process according to still another embodiment.

[Explanation of symbols]

 1 disk 3 optical head 8 encoder / decoder section 11 system controller 12 memory controller 13 buffer memory 14 encoder / decoder section 15 D / A converter 18 A / D converter 19 key operation section

Claims (2)

[Claims] 1. A mode for setting a track division mode in a recording device for recording audio data and management information for managing recording or reproducing operation of audio data for each track as one audio data unit. Operation means, track specifying operation means for specifying a track to be subjected to track division processing in the track division mode, and, when the track division mode is set by the mode operation means, among the tracks recorded on the recording medium, A management information updating device comprising control means capable of performing control for rewriting the management information such that the track designated by the track designation operating means is divided into a plurality of tracks with a predetermined time width. 2. A track length setting operation means capable of variably setting a predetermined time as a unit length of track division in the track division mode is provided, and the control means responds to an operation of the track length setting operation means. The management information updating device according to claim 1, wherein the predetermined time is set.