JPH09106660A - Recorder and reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a recorder and a reproducer, which realize the excellent operability and convenience when a series of recording contents are divided into a plurality of tracks and recorded. SOLUTION: The elapsed-time information from the starting point of a series of recording operation is recorded in management information for each track, which is set by track-marking operation and the like in recording. At the time of reproduction, the elapsed-time information recorded in correspondence with the track in the management information is read, and the elapsed-time information is displayed. When the time value is inputted and the access operation is instructed, the inputted time value and the elapsed-time information recorded in the management information are compared, the track corresponding to the inputted time value is discriminated and the access operation is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device and a reproducing device for a recording medium provided with management information for managing recording / reproducing operation of audio data in track units.

[0002]

2. Description of the Related Art A data-rewritable disc-shaped recording medium on which a user can record music data and the like is known, and is widely used as a mini-disc system. In such a disc medium, a data area (user TOC, hereinafter U-) for managing an area where data such as music has already been recorded and an unrecorded area (free area).
(TOC) is provided, and this management information is also rewritable in accordance with operations such as recording, editing, and erasing.

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

[0004]

By the way, when a user uses a mini disk system to record music, voice, etc., when a microphone is connected to input voice, another audio device or the like is used. When connecting and inputting an analog audio signal, there may be considered a case where a 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, it is possible to know the music (track) and the break of the music, and accordingly, the track can be automatically divided into the recorded audio data. For example, if digital dubbing is performed from a CD containing 10 songs, the recorded audio data can be automatically managed as 10 songs for each song even on a 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.

Considering the cue access which is a convenient function at the time of reproduction, it may be inconvenient if all of the sounds recorded from the start of recording to the end of recording are one track. Since the cue access is a method of accessing to the beginning position of the track to play back, when playing a disc on which a conference or the like is recorded, for example, when only a part of the conference content is to be played back, 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. It is necessary to search for a desired portion while performing (fast-forward reproduction). For example, for a disc on which a 30-minute conference is recorded, a high-speed search for 25 minutes has to be performed when it is desired to hear the contents of a statement at the time of about 25 minutes, and the reproducing operation is very inconvenient.

In consideration of such circumstances, the mini disk system is provided with a function of adding track marks automatically or manually during recording. The track mark function is a function that specifies track breaks during recording.For example, when the user performs rack mark operation during recording, the sound recorded up to that point and the sound recorded after that point are recorded. It is to be recorded as another track. Alternatively, a method has been proposed in which the track mark operation is automatically performed every predetermined time (for example, every 5 minutes) during recording.

If such a track mark function manages a series of recorded audio data as a plurality of tracks, it becomes convenient at the time of reproduction. For example, if the recorded data of the conference content is divided into tracks every 5 minutes, if you want to hear the sound after 25 minutes, you can find the 5th track (that is, the sound data from the 25 minute point) and access it. If a desired voice is searched for at that point by a high speed search, the desired voice can be easily reproduced.

However, considering the actual use,
The user rarely remembers when the track mark operation was performed for a series of recordings. For example, if the user can set the operation timing for the automatic track mark operation from 5 minute intervals, 10 minute intervals, 15 minute intervals, etc., forget at how many minutes the track was divided during recording during playback. It is often closed. In this case, for example, even if one wants to hear the sound at the time when the conference has progressed for about 30 minutes, it is not known what track it corresponds to.

In the case where the manual track mark operation is performed, the time point at which the track is divided is completely arbitrary. Whether or not it is recorded as the track number cannot be determined at all. As described above, even if track division is performed during recording, it may be difficult to access a desired audio portion during reproduction.

Further, during the reproduction, there is a case where it is desired to know how many minutes in the conference the utterance or the like heard by the reproduction is made, but this cannot be immediately known. The mini-disc system has a function of displaying a reproduction progress time during reproduction, and the reproduction progress time is time information for proceeding with the head of each track as 0 minute 0 second. Therefore, when the conference content is divided into tracks and recorded as described above, the elapsed time from the start of the conference is not displayed.

[0014]

In view of the above problems, the present invention is a recording apparatus which realizes good operability and convenience when recording a series of recorded contents by dividing it into a plurality of tracks. And a reproducing apparatus.

For this reason, 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, in the recording device, the start point of the recording operation is performed. Time counting means for counting the elapsed time from is provided. Then, regarding the operation of recording the input audio data on the recording medium, the management information can be recorded so that the series of the recorded data is recorded as one or a plurality of tracks, and the data of each track is recorded. A management information update control means is provided which can record the elapsed time information obtained from the time counting means at the recording execution timing in the management information in a state corresponding to each track. That is,
For each track set by a track marking operation or the like at the time of recording, the elapsed time information from the start of the series of recording operations is recorded in the management information.
For example, the number of minutes and seconds from the start of recording of a conference or the like is recorded at the beginning of each track.

As a reproducing apparatus, when reproducing audio data as a certain track, the elapsed time information recorded corresponding to the track in the management information is read, and a display based on the elapsed time information is displayed on the display means. A display control means is provided. This makes it possible to confirm that the track currently being reproduced is the track in which the sound from the time point of minutes and seconds in the series of recording operations is recorded.

Further, as a reproducing device, an operating means capable of inputting a time value to instruct an access operation is compared with the input time value and elapsed time information recorded corresponding to each track in the management information. Then, a discriminating means for discriminating the track corresponding to the inputted time value and an access control means for executing the access operation of the reproducing head with respect to the track discriminated by the discriminating means are provided. As a result, for example, in the case where it is desired to reproduce the sound per minute in a series of recording operations, even if the user does not know the corresponding track number, the position can be accessed and reproduced.

[0018]

DETAILED DESCRIPTION OF THE INVENTION A recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to FIGS. This recording / reproducing apparatus is a recording / reproducing apparatus as a mini disk system using a magneto-optical disk as a recording medium. The description will be made in the following order. 1. 1. Configuration of recording / reproducing device 2. U-TOC sector 0 U-TOC sector 1, sector 4 4. U-TOC sector 2 5. Operation during recording in manual track mark mode 6. Recording operation in automatic track mark mode 7. Display operation during playback 8. Access behavior

1. Configuration of Recording / Reproducing Apparatus FIG. 1 shows a block diagram of a main part of the recording / reproducing apparatus.
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 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 polarization beam splitter, an objective lens 3a, and the like, and a detector for detecting reflected light. Objective lens 3a
Are held by the biaxial mechanism 4 so as to be displaceable in the radial direction of the disk and in the direction of moving toward and away from the disk.

A magnetic head 6a is arranged at a position facing the optical head 3 with the disk 1 interposed therebetween. The magnetic head 6a operates to apply a magnetic field modulated by the supplied data to the 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 disc 1) GFM, and the like are extracted. Extracted playback R
The F 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
Are 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 including a microcomputer.
Various servo drive signals are generated according to a track jump command, an access command, rotational speed detection information of the spindle motor 2 and the like from 1 to control the biaxial mechanism 4 and the sled mechanism 5 to perform focus control, tracking control, and access operation control. Do. Further, the spindle motor 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 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 take 1.41 Mbit / s.
It's ec, and it's done intermittently.

The data written in the buffer memory 13 is read out at a timing when the transfer of the reproduction data becomes 0.3 Mbit / sec, and is supplied to the encoder / decoder section 14. Then, reproduction signal processing such as decoding processing with respect to audio compression processing is performed to obtain a digital audio signal with 16-bit quantization and 44.1 KHz sampling.

The digital audio signal output from the encoder / decoder unit 14 is converted into an analog signal by the D / A converter 15, and is supplied to the optical / line output terminal 22 or the headphone output terminal 21 via the switch 16. Alternatively, it is directly supplied to the light / line output terminal 22 without being converted into an analog form. When a headphone is connected to the headphone output terminal 21, an analog audio signal is supplied to the headphone and the sound is output by the headphone. Further, when an audio code (for example, a pin plug code) is connected to the optical / line output terminal 22, the analog audio signal is supplied to another device by the audio code. On the other hand, when the audio optical cable is connected to the optical / line output terminal 22, the reproduced digital audio signal is supplied to another device as an optical modulation signal.

When a recording operation is performed on the disc 1, an analog or digital audio signal is supplied from another device by an audio code or an optical cable for audio connected to the optical / line input terminal 24. Alternatively, a microphone is connected to the microphone input terminal 23 to supply an audio signal.

The audio signal sent to the optical / line input terminal 24 as digital data by the optical cable for audio is directly supplied to the encoder / decoder section 14. Also, an audio code or an analog audio signal input by a microphone is supplied to the A / D converter 18 via the switch 17, converted into digital data, and then supplied to the encoder / decoder unit 14.

The encoder / decoder section 14 performs audio compression encoding processing for compressing the data amount of the input digital audio signal of 16-bit quantization and 44.1 KHz sampling to about ⅕. 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 performs CIRC encoding,
It is supplied to the magnetic head drive circuit 6 after being subjected to encoding processing such as EFM modulation.

The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a in accordance with the encoded recording data. That is, the magnetic head 6a applies an N or S magnetic field to the disk 1. Further, at this time, the system controller 11 controls the optical head to output a laser beam of a recording level.

The operation unit 19 is provided with various keys used for user operation. For example, a recording key, a reproduction key, a stop key, an AMS key (heading operation key), a fast-forward key, a fast-return key, etc. are provided, and the operation information thereof is supplied to the system controller 11. Further, in the recording / reproducing apparatus of this example, a track mark can be automatically added at predetermined time intervals during recording, or a track mark can be added based on a manual operation. A track mark mode key for setting the automatic / manual setting of the track mark, a track mark key used in the manual track mark mode, and an operation key for setting the time interval for the track mark to be performed in the automatic olac mark mode . Further, the cue access operation during reproduction is usually performed by the AMS key described above, but in the case of this example, an operation key for performing an access operation based on time input described later is also provided.

The display unit 20 is composed of, for example, a liquid crystal display, and performs an operation of displaying an operation state, a track number, progress time information at the time of reproduction or recording, etc. under the control of the system controller 11. Further, in the case of the mini disk system, the character information and the recording date / time information can be recorded in the U-TOC area in correspondence with the track, and in the case of this example, the elapsed time information from the recording start is recorded as described later. However, such information can be displayed on the display unit 20 by characters, numbers, and the like.

By the way, when the recording / reproducing operation is performed on the disk 1, the management information recorded on the disk 1, that is, P-TOC (pre-mastered TOC), U-
It is necessary to read out the TOC (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 accordance with recording or erasing of data. The system controller 11 executes this editing process every time a recording / erasing operation is performed. The rewriting operation is performed on the -TOC information, and the U-TOC area of the disc 1 is also rewritten at a predetermined timing in accordance with the rewriting operation.

2. U-TOC sector 0 Here, a U-TO serving as management information for managing recording / reproducing operations of tracks (songs, etc.) on the disc 1.
The sector C will be described. As the TOC information, U-TOC and P-TOC are provided.
The TOC is formed in the innermost pit area of the disc 1 and is read-only information. And P-TO
The C manages the positions of the recordable area (recordable user area), the lead-out area, the U-TOC area, etc. of the disc. In the mini-disc system, a read-only optical disc in which all data is recorded in the form of pits can be used, but in the case of a read-only disc, management of songs recorded in ROM by P-TOC is also possible. The U-TOC is not 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. 8 shows the format of the U-TOC sector 0. As the U-TOC sector, sectors 0 to 7 can be provided. Sector 1 and sector 4 are areas for recording character information and sector 2 is an area for recording the recording date and time. Here, first, the U-TOC sector 0 that is absolutely necessary for the recording / reproducing operation of the disc 1 will be described.

The U-TOC sector 0 is mainly a data area in which management information about the music recorded by the user and the free area in which new music can be recorded is recorded. For example, when recording a certain music on the disk 1, the system controller 11
A free area on the disk is searched for from sector 0, and audio data is recorded there. At the time of reproduction, the address of the area in which the music to be reproduced is recorded is determined from the U-TOC sector 0, and the area is accessed to perform the reproduction operation.

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.

A sector is a data unit of 2352 bytes, and 36 sectors constitute one cluster. One cluster is the minimum unit in the recording operation. The synchronization pattern and address are not limited to this U-TOC sector 0, but are also recorded in P-TOC sectors or in data sectors in which audio data is actually recorded, in sector units. The cluster address is the upper address (Cluster
It is written with 2 bytes of H) and lower address (Cluster L),
The sector address is written in 1 byte. Next, at the specified byte position, the manufacturer code, model code,
Data such as a track number (First TNO) of the first track, a track number (Last TNO) of the last track, a used sector, a disk serial number, and a disk ID are recorded.

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

The table pointer (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.

Therefore, link information is provided, and the part tables can be connected by designating 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 is 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 for a defective area on the magneto-optical disk 1, and is a single part table or a plurality of parts tables showing a track portion (= part) which becomes a defective area due to a scratch or the like. The first part table in the box 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 head part table of one or a plurality of unused parts tables in the management table section. If there is an unused parts table, the table pointer P-EMPTY is set as the table pointer P-EMPTY. , (01h) to (FFh) are recorded.
If there are multiple unused part tables, the part 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 erasure area) on the magneto-optical disk 1 and a track portion (= part) indicating a free area track portion (= part) is indicated. The first part table in multiple parts 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. 9 schematically shows the management state of the parts which are the free area by 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 audio data such as music is not 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 songs recorded on the magneto-optical disk 1 by the user.
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.

For example, when the music set as the second track is discretely recorded on a plurality of parts on the disc, each part is designated in time order to indicate the recording position of the second track. Is done. In other words, from the part table specified by the table pointer P-TNO2, another part table is sequentially specified by the link information according to the temporal order, and linked to the part table in which the link information is "(00h)". (Same form as in FIG. 9 above). 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, the address management of the areas such as the music pieces recorded in the recordable user area and the free area is performed by the U-TOC sector 0.

3. U-TOC Sector 1, Sector 4 Next, FIG. 10 shows the format of the U-TOC sector 1. This sector is a data area in which input character / number information can be recorded when a track name or a disc title is added to each recorded track.

In the U-TOC sector 1, slot pointers P-TNA1 to P-TNA255 are prepared as character slot instruction data portions corresponding to the recorded tracks, and the slot pointers P-TNA1 to P-TNA255 are also provided. The character slot portion designated by is prepared as slots (01h) to (FFh) of 255 units with 1 unit of 8 bytes, and character data is managed in a form similar to that of the above-mentioned U-TOC sector 0.

Character information such as a disc title or a track name is recorded in the slots (01h) to (FFh) in ASCII code. The 8 bytes before the slot (01h) are used as a dedicated area for the disc name. And
For example, the character designated by the user corresponding to the first track is recorded in the slot designated by the slot pointer P-TNA1. Further, by linking the slots by the link information, the character input corresponding to one track can be handled even if it is larger than 7 bytes (7 characters). It should be noted that the slot pointer P-EMPTY manages the parts table which is not used even in this U-TOC sector 1.

The U-TOC sector 1 enables the user to record character information such as a track name corresponding to each track recorded on the disc. That is, when the user operates the operation unit 19 to specify a track and input character information, the character is changed to U-TOC.
It is recorded corresponding to the track designated in sector 1.

Next, although the U-TOC sector 4 is not shown in the figure, the U-TOC sector 4 is similar to the sector 1 in that the music recorded by the user is given a title,
When a disc title is added, the data area is used for recording the input character information, and the format is almost the same as that shown in FIG. However, in this sector, code data corresponding to kanji and European characters are recorded. In addition to the data of sector 1 in FIG. 10, an attribute of a character code used as a character code is recorded at a predetermined byte position. . This management of the character information of the U-TOC sector 4 is performed in the same manner as in the sector 1 by using 255 units designated by the slot pointers P-TNA1 to P-TNA255 and the slot pointers P-TNA1 to P-TNA255 as the character slot indication data portion. This is performed by the slots (01h) to (FFh).

4. U-TOC Sector 2 FIG. 11 shows the format of the U-TOC sector 2, and this area is mainly a data area for recording the recording date and time of the music recorded by the user. This UT
In OC sector 2, slot pointers P-TRD1 to
P-TRD255 is available and this slot pointer P-TRD1
~ Date / time slot part specified by P-TRD255 is prepared. In the date / time slot portion, 255 units of slots (01h) to (FFh) are formed with 1 unit of 8 bytes, and date / time data is managed in a form similar to that of the U-TOC sector 0 described above.

In the slots (01h) to (FFh), the recording date and time of the music (track) is recorded in 6 bytes. Six bytes record numerical values corresponding to year, month, day, hour, minute, and second, one byte at a time. The remaining two bytes are a maker code and a model code, in which code data indicating the manufacturer of the recording device that recorded the music and code data indicating the model of the recording device that recorded the music are recorded. The 8-byte slot before the slot (01h) is an area for recording date and time data for the disc.

For example, when a music piece is recorded as the first music piece on a disc, the recording date and time, the manufacturer code and model code of the recording device are recorded in the slot designated by the slot pointer P-TRD1. The system controller 11 automatically records the recording date and time by referring to the internal clock. Since the date and time of recording is recorded, the date and time are not recorded in this area when the internal clock of the recording / reproducing apparatus is not operated by the user to adjust the clock.

Even in this U-TOC sector 2, the slot pointer P-EMPTY manages an unused slot. For unused slots, link information is recorded in place of the model code, and each unused slot is managed by linking with the link information starting from the slot pointer P-EMPTY.

5. Operation during recording in manual track mark mode In the recording / reproducing apparatus of this example, tracks can be divided by performing track mark processing during recording so as to be convenient for recording at a conference, for example. As track mark processing, there are a manual track mark mode in which a track is divided at the timing when the user presses the track mark key during recording, and an automatic track mark mode in which a track is automatically divided at a predetermined time during recording. First, the operation when recording is performed in the manual track mark mode will be described with reference to FIGS. FIG. 2 is a flowchart of the process of recording by the system controller 11.
Further, FIG. 3 shows a track state accompanying the recording, assuming that the recording is started at time t ₀ and ended at time t ₄ .

When a recording operation is performed in the manual track mark mode, the process of the system controller 11 proceeds from step F101 to F102 of FIG. 2 to record audio data first, that is, audio data input from a connected microphone or the like. Set the track number n for. The track number n is a value obtained by adding 1 to the value recorded as the last track number (Last TNO) in the U-TOC sector 0 at that time. That is, if the disc 1 is a virgin disc, the track number n = 1 is set as the first track number to be recorded. If a disc in which 3 tracks are already recorded is used, the first track number to be recorded is n = 4. Here, assuming that the track number n = 1 is set in step F102, the process will be described with reference to FIG.

In step F103, the system controller 1
1 resets the internal timer to the state of 0 minutes and 0 seconds and starts counting. This internal timer serves as a timer that indicates the elapsed time from the start of recording during recording. Then, the timer is started and the actual recording operation is started (F104). That is, the audio signal input from the microphone is processed by the circuit system from the A / D converter 18 to the magnetic head drive circuit 6 and recorded on the disk 1 by the magnetic head 6.

At step F105, the count value of the timer at that time is stored corresponding to the track number n. Therefore, at the time when the recording of the track 1 is started as at the time t _{0 in} FIG. 3, the elapsed time data of 0 minutes 0 seconds is stored corresponding to the track number 1.

During recording, the user's operation of the track mark key is monitored in step F107. When the track mark key is operated, the process proceeds to step F108 to perform track division processing on the recorded data. That is, when the track mark key is operated, the audio signal input thereafter is managed as the track of the next track number.
Actually, the address when the input signal at this timing is recorded on the disc is stored. Then, in step F109, the value of the track number n is incremented, the process returns to step F105, and the count value of the timer at that time is stored corresponding to the track number n.

For example, if the track mark key is operated at time t _{1 in} FIG. 3, the input voice thereafter is recorded as track 2 as shown in FIG. As shown in b), the elapsed time from the start of recording, which is the timer count value at that time, is “7 minutes 31
“Second” is stored in association with track number 2.

Similarly, if the track mark key is operated at the time points t ₂ and t ₃ of FIG. 3 during the recording operation, the track number is also processed by the processing of steps F107, F108, F109 and F105. Is incremented, and values corresponding to the incremented track number n, such as “12 minutes 05 seconds” and “19 minutes 45 seconds”, which are elapsed times from the start of recording, which are timer count values, are stored.

When the recording operation is terminated at the time of t ₄ or the recording area is lost on the disk, the system controller 1
The process of No. 1 proceeds from step F106 to step F110, and controls each part to stop the recording operation. Then, in step F111, the U-TOC held in the buffer memory 13 is updated so that the data recorded from time t _{0 to} time t ₄ is managed as each track. That is, the start address and end address are assigned to the above-mentioned U-TOC sector 0 corresponding to each track (track 1 to track 4) so that the track is divided by the address of the track mark point stored in step F108. Describe.

Further, in this example, in step F112, the timer count value (elapsed time information) stored in step F105 is assigned to each track in, for example, the above-mentioned U-TOC sector 1 (character information storage area). Describe in a corresponding state. The description of this elapsed time information is U-TOC.
This may be performed using the sectors 2 and 4, or the sectors 3 and 5 to 7 whose description contents are not defined.

In this way, the U-T
After updating the OC data, the U-TOC on the disc 1 is updated at a predetermined timing (F113). That is, by transferring the updated U-TOC data on the buffer memory 13 as recording data and recording it on the disc 1,
The U-TOC on the disc 1 is updated. Disc 1
When the U-TOC above is updated, the recording operation is finally completed. This operation may be performed, for example, immediately after the end of recording, or may be performed when the disc 1 is ejected or when the power is turned off.

By carrying out such processing, as shown in FIG.
As shown in FIG. 3A, the data about the recording performed from the time point t _{0 to the} time point t ₄ is as shown in FIG.
~ It will be managed as track 4, and the elapsed time information "0 minutes 0 seconds""7 minutes 31 seconds""12 minutes 05 seconds""19 minutes 45 seconds" will be recorded corresponding to each track. It will be. The elapsed time information indicates how many minutes and seconds after the start of recording the audio content at the beginning of each track in a series of recording operations.

In addition to the pressing of the track mark key, when the recording operation is temporarily stopped, the track division may be performed at that position. That is, when the pause is released and the recording is resumed, the data at that time is recorded in the next track number.

In the case of the present example, regarding the recording pause, it is not considered that the series of recording operations are ended, and the recorded data after the recording is resumed is managed as the next track as with the track mark key operation. That is, the steps F108, F109, and F105 may be performed. However, as the counting operation of the timer during the pause, the timer may be paused in synchronization with the recording operation, or the count operation may be stopped. May be performed continuously. When pausing the count, the elapsed time information recorded corresponding to the track is the elapsed time from the start as recorded data.On the other hand, when continuing the time count while recording is paused, The elapsed time information recorded corresponding to is the actual elapsed time at the time of recording.

6. Operation during recording in automatic track mark mode Next, the operation when recording in the automatic track mark mode will be described with reference to FIGS. FIG. 4 is a flow chart of processing at the time of recording by the system controller 11. Further, FIG. 5 shows a track state accompanying the recording, assuming that the recording is started at time t ₁₀ and ended at time t ₁₁ .

When the recording operation is performed in the automatic track mark mode, the process of the system controller 11 proceeds from step F201 to F202 of FIG.
Set. System controller 1 in step F203
1 resets the internal timer to the state of 0 minutes and 0 seconds and starts counting. Then, the timer is started and the actual recording operation is started (F204).

In step F205, the count value of the timer at that time is stored in correspondence with the track number n. Therefore, if the recording of the track 1 is started at time t _{10 in} FIG. 5, the elapsed time data of 0 minutes 0 seconds is stored corresponding to the track number 1. The above processing is performed in steps F101 to F1 in FIG. 2 in the manual track mark mode.
It is similar to the processing of 05.

During recording, in step F207, the count value of the timer, that is, the elapsed time from the time t ₁₀ when recording is started is monitored. When the track division timing in the automatic track mark mode is set to every 5 minutes, the system controller 11 causes the timer count value to be 5 minutes, 10 minutes, 15 minutes ... Will be monitored.

When the elapsed time reaches the first track mark timing of 5 minutes 00 seconds, the process advances to step F208 to perform track division processing on the recorded data. That is, the audio signal input thereafter is managed as the track of the next track number. Actually, the address when the input signal at this timing is recorded on the disc is stored. Then, in step F209, the value of the track number n is incremented, the process returns to step F205, and the count value of the timer at that time is stored corresponding to the track number n.

For example, as shown in FIG. 5 (b), when the elapsed time reaches 5 minutes, the input voice after that is recorded as the track 2 as shown in FIG. 5 (c).
The elapsed time "5 minutes 00 seconds" from the start of recording, which is the timer count value at that time, is stored in association with the track number 2.

Similarly, after that, the track number is incremented by the processing of steps F207, F208, F209, and F205 each time the track mark timing becomes 10 minutes 00 seconds and 15 minutes 00 seconds. The timer count value "1" corresponding to the number n
Values such as "0 minutes 00 seconds" and "15 minutes 00 seconds" are stored.

When the recording is ended due to the stop operation at t ₁₁ or when the recordable area on the disk is exhausted, the system controller 1
The process of step 1 proceeds from step F206 to step F210, and controls each part to stop the recording operation. In step F 211, the updating of the U-TOC held in the buffer memory 13 as recorded data from the t ₁₀ time until t ₁₁ time is managed as each track is performed. That is, the start address and end address are assigned to the above-mentioned U-TOC sector 0 corresponding to each track (track 1 to track 4) so that the track is divided by the address of the track mark point stored in step F208. Describe.

Further, in step F212, the timer count value (elapsed time information) stored in step F205 is set in a state corresponding to each track in, for example, the above-mentioned U-TOC sector 1 (character information storage area). Describe.
In this case, of course, the description of the elapsed time information is U-TOC.
Sector 2, sector 4, or sector 3 and sectors 5 to 7 may be used. Buffer memory 1
After updating the U-TOC data on the disc 3, the U-TOC is updated on the disc 1 at a predetermined timing (F213), and the recording operation is finally completed.

7. Display Operation During Playback As described above, by recording the elapsed time information from the start of recording for each track during recording, it is possible to display the elapsed time by the process of FIG. 6 as the display operation during playback. That is, when the system controller 11 reproduces a certain track N, the U-T
The elapsed time information recorded in OC sector 1 (or another sector) is read (F301). Then, the read elapsed time information is displayed on the display unit 20 (F30
2).

By doing so, at the time of reproduction, it is possible to confirm at what time the track is the track of the audio input during recording. For example, when the track 3 is reproduced after the recording of the conference as shown in FIG. 5, the elapsed time of "10:00" is displayed, so that the audio content of the track 3 is from the start of the conference. It can be judged that the speech is after 10 minutes.

The elapsed time information read from the U-TOC is the elapsed time during recording corresponding to the head position of the track. Therefore, as the reproduction of the track progresses, the audio that is actually reproduced and output and the elapsed time information deviate from each other. Therefore, it is preferable that the time display at the start of reproducing the track is used as the elapsed time information read from the U-TOC, and the time display progresses with the reproduction thereafter.

For example, when the track 4 is accessed and played back on the disc on which the recording is performed as shown in FIG. 5, the elapsed time information "15:00" is first displayed, but the playback is not performed. As you proceed, the display will change to "15:
01 ”,“ 15:02 ”,“ 15:03 ”, and so on. As a result, it is possible to determine, for example, how many minutes after the start of the conference the content of the utterance or the like heard in the reproduction was made.

In the mini disk system, U-TO
Date and time information at the time of recording can be recorded in the C sector 2, but this does not work unless the internal clock of the recording / reproducing apparatus is set. On the other hand, as in this example, the elapsed time information from the start of recording functions regardless of the setting of the internal clock. Therefore, even if the user forgets to set the internal clock or the user who did not perform the setting operation is troublesome, it is a suitable guide for the reproduction.

8. Access Operation Next, by recording the elapsed time information from the start of recording for each track during recording as described above, the operation by the process of FIG. 7 becomes possible as an access operation during reproduction.

As described above, the operation unit 19 is provided with a key for inputting the elapsed time for access. The user not only accesses the beginning of the track by using the AMS key, but also inputs the elapsed time at the time of recording even if he / she does not know the track number of the track containing the desired audio content. Track access is performed.

The system controller 11 executes step F401.
When detecting the access operation by inputting the elapsed time,
In step F402, the input elapsed time is fetched and the elapsed time information recorded corresponding to each track in the U-TOC is searched. And U-TOC
The elapsed time information recorded in the above is compared with the input elapsed time, and if there is a track in which the elapsed time information matching the input elapsed time is recorded, U-
The start address of the track is fetched from TOC sector 0 (F403, F404).

However, if there is no track in which the elapsed time information matching the input elapsed time is recorded, the track including the input elapsed time is discriminated and the U-TOC sector 0 Fetch the start address of the track (F403, F405). The track including the input elapsed time is a track in which the closest elapsed time information that is smaller than the value of the input elapsed time is recorded.

When the start address is fetched in step F404 or F405, the access operation of the optical head 3 is executed for the start address in step F406, and the reproducing operation is executed when the access is completed.

For example, when the user inputs "10 minutes 00 seconds" to instruct access when reproducing a disc recorded as shown in FIG. 5, the system controller 11 retrieves the U-TOC. "10 minutes 0
Search for the track in which the elapsed time information "0 seconds" is recorded. In this case, “10:00” corresponding to track 3
Since the elapsed time information is recorded, it can be determined that the access target is the track 3. So U-TO
The start address of the track 3 is confirmed in the C sector 0, and the access operation of the optical head 3 to the track 3 is executed.

Further, for example, when the disc recorded as shown in FIG. 3 is played back, the user gives "10 minutes 00 seconds".
Then, the system controller 11 searches the U-TOC for "10".
Search for the track in which the elapsed time information "minute 00 second" is recorded. In this case, since the elapsed time information "10 minutes 00 seconds" is not recorded, a track including the elapsed time "10 minutes 00 seconds" is searched for as the processing of step F405. "7 minutes 31 seconds" is recorded as the closest elapsed time information that is smaller than the value of "10:00 and is 10 minutes". Since the track whose elapsed time information is “7 minutes 31 seconds” is track 2, it is determined that the access target is track 2. And U-TOC sector 0 and track 2
After confirming the start address, the access operation of the optical head 3 to the track 2 is executed.

In this case, the input "10 minutes 00
"2 minutes 29" which is the time difference between the elapsed time "second" and the elapsed time information of the track including it "7 minutes 31 seconds".
Second ”is calculated, and the address difference on the disk corresponding to“ 2 minutes 29 seconds ”is calculated, and the calculated address difference is added to the start address of track 2, which is equivalent to“ 10 minutes 00 seconds ”. You can get the address to do. In this way, the address corresponding to "10:00" may be calculated, and the position (that is, the position at which the elapsed time is "10:00") may be accessed.

By making the access operation as described above executed, for example, when the user wants to hear the content of a statement made about 10 minutes after the start of recording at the conference, " By inputting "10 minutes 00 seconds", a desired reproduced voice can be obtained. That is, the troublesome operation of searching for a desired position by performing a fast-forward search is unnecessary. Further, even if the track number in which the desired sound is recorded cannot be known, that portion can be reproduced without difficulty.

[0099]

As described above, in the present invention, when a series of recording data is recorded as one or a plurality of tracks, the elapsed time information obtained from the time counting means at the recording execution timing of the data for each track. Is recorded in the management information in a state corresponding to each track. Therefore, at the time of reproduction, by reading the elapsed time information recorded corresponding to the track in the management information and executing the display based on the elapsed time information on the display means, the user can The time can be grasped, and the convenience is improved.

[0100] Further, as a reproducing apparatus, a time value is input so that the access operation can be instructed. In that case, the input time value is compared with the elapsed time information recorded corresponding to each track in the management information. However, by determining the track corresponding to the input time value and allowing the track to be accessed, for example, when the user wants to reproduce the number of minutes of audio in a series of recording operations, There is an effect that the position can be accessed and reproduced without knowing the corresponding track number or without performing a troublesome operation such as high-speed search, and the usability is greatly improved.

[Brief description of the drawings]

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

FIG. 2 is a flowchart of processing during recording in the manual track mark mode according to the embodiment.

FIG. 3 is an explanatory diagram of an operation during recording in the manual track mark mode according to the embodiment.

FIG. 4 is a flowchart of processing during recording in the automatic track mark mode according to the embodiment.

FIG. 5 is an explanatory diagram of an operation during recording in the automatic track mark mode according to the embodiment.

FIG. 6 is a flowchart of display processing according to the embodiment.

FIG. 7 is a flowchart of access processing according to the embodiment.

FIG. 8 is an explanatory diagram of a U-TOC sector 0 of a mini disc.

FIG. 9 is an explanatory diagram of a link form of U-TOC sector 0 of the mini disc.

FIG. 10 is an explanatory diagram of a U-TOC sector 1 of a mini disc.

FIG. 11 is an explanatory diagram of a U-TOC sector 2 of the mini disc.

[Explanation of symbols]

 1 disk 3 optical head 6a magnetic head 8 encoder / decoder section 9 servo circuit 11 system controller 12 memory controller 13 buffer memory 14 encoder / decoder section 19 operation section 20 display section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G11B 27/00 D 27/28 B

Claims (3)

[Claims] 1. A recording apparatus for a recording medium in which audio data and management information for managing recording or reproducing operation of audio data for each track as one audio data unit are recorded, from a start point of the recording operation. Regarding the time counting means for counting the elapsed time and the operation of recording the input audio data on the recording medium, the management information is recorded so that a series of the recorded data is recorded as one or a plurality of tracks. Management information update control means capable of recording the elapsed time information obtained from the time counting means at the recording execution timing of data for each track in the management information in a state corresponding to each track. A recording device characterized by being configured. 2. The audio data and management information for managing the recording or reproducing operation of the audio data for each track as one audio data unit are recorded, and the management information for each track is recorded in the management information. In the reproducing apparatus for the recording medium in which the information on the elapsed time from the recording start time at the time of is recorded, the display means and the audio information as a certain track are recorded from the management information in correspondence with the track. And a display control unit that causes the display unit to execute display based on the elapsed time information. 3. Audio data and management information for managing recording or reproducing operation of audio data for each track as one audio data unit are recorded, and this recording management information includes recording operation for each track. In the reproducing device for the recording medium in which the time information from the recording start time at the time of recording is recorded, operation means capable of inputting a time value to instruct an access operation, the input time value, and the management In the information, the elapsed time information recorded corresponding to each track is compared to determine the track corresponding to the input time value, and the playback head of the playback head for the track determined by the determination means. A playback device comprising: an access control unit that executes an access operation.