JPH0757437A - Recorder and reproducer - Google Patents

Abstract

PURPOSE:To record a unrecorded area without erasing recorded track data by providing an end searching key and starting recording operation from a leading address of the unrecorded area at the time of operating recording when the searching key is operated. CONSTITUTION:A recording and reproducing device main body 30 is provided with the end searching key 46, and when a recording switch 33 is operated at the time of operating this key 46, recording is performed from the position of the leading address of the unrecorded area shown by managing information, so that the unrecorded area can be recorded without erasing the recorded track data, etc. Then, when the key 46 is operated, access can be made to the vicinity of an end address of the last track data, and the reproduction of a recording end part can quickly and easily be confirmed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention records or reproduces, for example, audio data on a disk-shaped recording medium provided with management information for managing recording / reproducing operation of track data. The present invention relates to a recording device and a reproducing device that can be used.

[0002]

2. Description of the Related Art Data rewritable disc media on which a user can record music data and the like are known. In such disc media, an area where data such as music has already been recorded or an unrecorded area has been recorded. A data area (user TOC, hereinafter referred to as U-TOC) for managing the data is provided, and the management data is also rewritten every time an operation such as recording, editing, or erasing is completed.

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-
It discriminates from the TOC and accesses the area to perform the reproducing operation.

[0004]

By the way, as a recording device for such a disc, when recording a new piece of music or the like, an area which is an unrecorded area at that time is used, that is, If you want to add additional tracks without erasing the tracks (songs, etc.) that have been recorded up to, and from the position of the optical head when the recording operation was performed (there is a recorded area or a non-recorded area). There is a case where you want to continue recording (regardless of whether it exists), that is, when you want to start recording from a user's arbitrary position, such as tape recording, to erase and overwrite the recording status up to that point. Therefore, it is desired that the user can select such a recording method.

As a reproducing apparatus, it is often desired to access the optical head to the last recorded position. For example, to check the songs that were recorded until then,
After recording, to confirm whether the song was correctly recorded to the end, I want to play near the rear end of the final song. However, in order to play the trailing edge of the final song, for example, after cueing the final song, it is necessary to continue the cue (fast forward playback) operation and reach the playback position, which is a complicated operation. There is also a problem that it takes time to play again.

[0006]

In view of the above problems, the present invention allows a recording apparatus to select a desired recording method, and a reproducing apparatus allows access to the rear end position of the final music piece for reproduction. The aim is to be able to perform easily and quickly.

Therefore, it is possible to record data by using the management information on a disk in which data is recorded in track units and management information for managing each track data and unrecorded area is recorded. In the recording device, a recording end search operation means and, when a recording operation is performed when the recording end search operation means is operated, a recording operation from a head address position as an unrecorded area indicated in the management information to the disc is performed. And a control means for controlling the start.

Further, it is possible to reproduce the data by using the management information on the disc in which the data is recorded in track units and the management information for managing each track data and the unrecorded area is recorded. The reproducing apparatus is provided with a recording end search operation means and a control means capable of accessing the end address of the last track data of the track data recorded on the disk based on the operation of the recording end search operation means. .

[0009]

When the recording end search operation means is provided and the recording operation is performed after the operation of the recording end search operation means (that is, after the operation that the user can recognize as being at the end of the already recorded portion). Will record the previously recorded track data in the unrecorded area without erasing it, and in the case of normal recording operation, if you record from the address at that time, the user will have two The recording method of can be selected. Further, by accessing the end address of the final music piece by the recording end search operation means, it becomes possible to reproduce and confirm the recording end portion easily and quickly.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording / reproducing apparatus using a magneto-optical disk as a recording medium will be described below as an example of the recording apparatus and the reproducing apparatus of the present invention with reference to FIGS. 1. Configuration of recording / reproducing apparatus 2. Data recording form and area structure of disc 3. P-TOC sector 4. U-TOC sector 5. Free area management form 6. Processing based on operation of end search key 7. Operation example using the end search key

<1. Configuration of recording / reproducing apparatus> FIG.
(D) is a plan view, a front view, a right side view, and a left side view showing the appearance of the recording / reproducing apparatus. Reference numeral 30 is a recording / reproducing apparatus main body, and 31 is a display unit such as a liquid crystal display.
The title characters, operation mode, recording / playback level, etc. are displayed. Reference numeral 32 denotes a disc insertion portion, into which a magneto-optical disc housed in a cartridge is inserted and loaded into an internal recording / reproducing optical drive system.

The recording / reproducing apparatus main body 30 is provided with various operating means as an operation input section. For example, a recording switch 33, an eject key 34, and an editing switch 35 are provided on the front side of the main body. The playback key 36,
Pause key 37, stop key 38, AMS key 39, search key 40, song name input mode key 41, disc name input mode key 42, date input mode key 4
3, a ten-key pad 44, an enter key 45, and an end search key 46 used for searching the end position (end address) of the final music. Each numeric key of the ten-key pad 44 corresponds to three or two alphabets or spaces, and is used when inputting characters.

A hold switch 48, a play mode key 49 for selecting repeat / shuffle / program play, a bass boost switch 50, and a resume switch 51 are provided on the right side of the main body, and the left side of the main body is provided with
AGC switch 52, microphone attenuator switch 53
Is provided. Further, 54 is a volume knob, and 55 is a recording level adjusting knob.

Various input / output terminals are provided on the side surface of the main body. Reference numeral 56 is a microphone input terminal, and 57 is a headphone output terminal. Reference numeral 58 denotes an input terminal, which is also used as an input terminal for a digital audio signal by an optical cable and a line input terminal for an analog audio signal. The description of the dual-purpose terminal mechanism is omitted. An output terminal 59 is also used as an output terminal for a digital audio signal by an optical cable and a line output terminal for an analog audio signal.

FIG. 2 shows a block diagram of a main part inside the recording / reproducing apparatus of FIG. In FIG. 2, reference numeral 1 denotes, for example, a magneto-optical disc on which audio data is recorded, and schematically shows a state in which it is loaded from the disc insertion portion 32. The magneto-optical disk 1 is rotationally driven by a spindle motor 2. An optical head 3 irradiates the magneto-optical disk 1 with a laser beam during recording / reproduction, which provides a high level laser output for heating the recording track to the Curie temperature during recording, and the magnetic Kerr effect during reproduction. It provides a relatively low level laser power for detecting data from reflected light.

For this reason, the optical head 3 is equipped with a laser diode as a laser output means, an optical system including a deflecting beam splitter, an objective lens and the like, and a detector for detecting reflected light. The objective lens 3a is held by the biaxial mechanism 4 so as to be displaceable in the disc radial direction and the direction in which the disc moves toward and away from the disc.

Reference numeral 6 denotes a magnetic head for applying a magnetic field modulated by the supplied data to the magneto-optical disk, which is arranged at a position facing the optical head 3 with the magneto-optical disk 1 interposed therebetween. The entire optical head 3 and the magnetic head 6 are movable in the disk radial direction by a sled mechanism 5.

Information detected from the magneto-optical disk 1 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 7. The RF amplifier 7 calculates the supplied information by reproducing RF signals, tracking error signals, focus error signals, and absolute position information (absolute position information recorded as pregrooves (wobbling grooves) on the magneto-optical disk 1). Address information, focus monitor signal, etc. are extracted. Then, the extracted reproduction RF signal is supplied to the encoder / decoder unit 8. The tracking error signal and the focus error signal are supplied to the servo circuit 9, and the address information is supplied to the address decoder 10. Further, the absolute position information and the focus monitor signal are supplied to the system controller 11 configured by, for example, a microcomputer.

The servo circuit 9 generates various servo drive signals according to the supplied tracking error signal, focus error signal, track jump command, seek command from the system controller 11, rotational speed detection information of the spindle motor 2, etc. Shaft mechanism 4 and sled mechanism 5
To perform focus and tracking control, and control the spindle motor 2 to a constant angular velocity (CAV) or a constant linear velocity (CLV).

The reproduced RF signal is sent to the encoder / decoder unit 8
After the EFM demodulation and the decoding process such as CIRC are performed by the memory controller 12, the buffer RAM 13 is temporarily processed by the memory controller 12.
Written in. The reading of data from the magneto-optical disk 1 by the optical head 3 and the transfer of reproduced data in the system from the optical head 3 to the buffer RAM 13 are performed.
It is 1.41 Mbit / sec and is performed intermittently.

The data written in the buffer RAM 13 is read out at the timing when the reproduction data is transferred at 0.3 Mbit / sec, and is supplied to the encoder / decoder unit 14. Then, a reproduction signal process such as a decoding process for the audio compression process is performed to obtain an output digital signal. The output digital signal is converted into an analog signal by the D / A converter 15 and supplied to the output terminal 59 or the headphone output terminal 57 shown in FIG. Alternatively, it is directly supplied to the output terminal 59 without being converted to analog. That is, when a headphone is connected to the headphone output terminal 57, an analogized audio signal is supplied to the headphone, and when an audio code (for example, a pin plug code) is connected to the output terminal 59, it is converted to an analog signal. The generated audio signal is supplied to another device by the audio code. Further, when the optical cable for audio is connected to the output terminal 59, the audio signal is supplied to other devices as digital data.

Here, writing / reading of data to / from the buffer RAM 13 is performed by being addressed by the memory controller 12 under the control of the write pointer and the read pointer, and the write pointer (write address) has been described above. As described above, the read pointer (read address) is incremented at a timing of 1.41 Mbit / sec, while the read pointer (read address) is 0.3 Mbit / se.
Since it is incremented at the timing of c, due to the difference between the bit rates of writing and reading, the buffer RA
A certain amount of data is stored in M13.
When the full capacity of data is accumulated in the buffer RAM 13, the increment of the write pointer is stopped, and the data read operation from the magneto-optical disk 1 by the optical head 3 is also stopped. However, since the read pointer R is continuously incremented, the reproduced voice output is not interrupted.

Thereafter, only the read operation is continued from the buffer RAM 13, and at some point the buffer RAM 13
Assuming that the amount of data stored therein is equal to or less than a predetermined amount, the data reading operation by the optical head 3 and the increment of the write pointer are restarted again, and the data is again stored in the buffer RAM 13.

By outputting the reproduced sound signal via the buffer RAM 13 as described above, the reproduced sound output is not interrupted even when the tracking is missed due to disturbance or the like, and the data accumulation remains. By accessing the correct tracking position and restarting the data reading, the operation can be continued without affecting the reproduction output. That is, the seismic resistance function can be significantly improved.

In FIG. 2, address information output from the address decoder 10 and subcode data used for control operation are supplied to the system controller 11 via the encoder / decoder unit 8 and used for various control operations. Further, the lock detection signal of the PLL circuit that generates the bit clock for the recording / reproducing operation and the monitor signal of the missing state of the frame synchronization signal of the reproduction data (L and R channels) are also supplied to the system controller 11.

Further, the system controller 11 outputs a laser control signal S _LP for controlling the operation of the laser diode in the optical head 3, controls the output of the laser diode on / off, and at the time of on-control, the laser It is possible to switch between an output at the time of reproduction in which the power is at a relatively low level and an output at the time of recording in which the power is at a relatively high level.

When a recording operation is performed on the magneto-optical disk 1, an analog or digital audio signal is supplied from another device by an audio cord or an audio optical cable connected to the input terminal 58. Alternatively, a microphone is connected to the microphone input terminal 56 to supply an audio signal.

The audio signal sent as digital data to the input terminal 58 through the audio optical cable is directly supplied to the encoder / decoder section 14. The analog audio signal input by the audio code or the microphone is supplied to the A / D converter 18, converted into digital data, and then supplied to the encoder / decoder unit 14. The encoder / decoder unit 14 performs audio compression encoding processing on the input digital audio signal.
The recording data compressed by the encoder / decoder unit 14 is temporarily buffered by the memory controller 12.
The data is written in the AM 13, read at a predetermined timing, and sent to the encoder / decoder unit 8. After the encoder / decoder unit 8 performs encoding processing such as CIRC encoding and EFM modulation, the magnetic head drive circuit 1
5 is supplied.

The magnetic head drive circuit 15 supplies a magnetic head drive signal to the magnetic head 6 according to the encoded recording data. That is, the N or S magnetic field is applied to the magneto-optical disk 1 by the magnetic head 6. At this time, the system controller 11 also supplies a control signal to the optical head so as to output a laser beam of a recording level.

Reference numeral 19 denotes an operation input section provided with keys used for user operation, and the switches or keys 33 to 53 described above correspond to this.

By the way, 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-.
The TOC (user TOC) is read out, and the system controller 11 determines the address of the segment to be recorded on the disc 1 and the address of the segment to be reproduced according to the management information. It is held in the buffer RAM 13. For this reason, the buffer RAM 13 is divided into the above-mentioned recording data / playback data buffer area and the area for holding these management information.

Then, the system controller 11 reads out these management information by executing a reproducing operation on the innermost circumference side of the disc on which the management information is recorded when the disc 1 is loaded, and stores it in the buffer RAM 13. It is possible to refer to the recording / reproducing operation for the disc 1 thereafter.

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

<2. Data recording mode and area structure of disc> The recording mode of track data recorded on the disc 1 by such a recording / reproducing apparatus will be described with reference to FIGS. Random access is much easier in a magneto-optical disk than in a tape-shaped recording medium such as DAT or a compact cassette tape. Therefore, the first track to the n-th track are ordered from the inner circumference side to the outer circumference side on the disk. You don't have to record properly. In other words, even if each song is physically recorded at different positions on the disc, as long as the recorded addresses of each song from the 1st track to the nth track are managed, they are played back in the correct song order. You can do it.

Further, for example, one track (song) does not necessarily have to be recorded in a continuous segment (a segment means a portion in which physically continuous data is recorded). There is no problem if the data is discretely recorded on the disc in a plurality of segments.

In particular, the data read from the magneto-optical disk as described above is temporarily buffered at a high speed in the buffer RAM 1.
In the system in which the data is read from the buffer RAM 13 and read from the buffer RAM 13 at a low speed and demodulated as an audio reproduction signal, even if the data reading from the magneto-optical disk is temporarily interrupted by the access between the segments, The reproduced sound can be output without interruption.

Therefore, if the recording / reproducing operation within the segment and the high-speed access operation (the access operation which is completed within the reproducible time due to the amount of data accumulation caused by the difference between the write rate and the read rate of the buffer RAM 13) are repeated, Even if the track of one music is divided into a plurality of segments and physically divided, it is possible to prevent the recording / playback of the music from being hindered.

For example, as shown in FIG. 3, the first music piece is continuously recorded as the segment M ₁ and the second music piece is recorded as the segment M ₂ , but the fourth music and the fifth music are recorded as the segment M 1.
_{4 (1) to} M4 ₍₄₎ and M5 _{(1) to} M5 ₍₂₎ can be divided and recorded on the disc. (Note that Fig. 3
Is merely a schematic diagram, and in practice, one segment often covers several to several hundred tracks or more. )

When recording or erasing music on a magneto-optical disk is repeated, vacant areas on the tracks are irregularly generated due to the difference in the playing time of the recorded music or the playing time of the erased music. By executing the discrete recording in this way, it becomes possible to record, for example, a music longer than the erased music by utilizing the erased portion, and by repeating recording / erasing, the data recording area Waste is eliminated. It should be noted that what is recorded is not necessarily a “song”, and any sound signal is included, but in the following, it is assumed that the music is recorded as one unit of data (track) continuous in terms of content. And explain.

Of course, for such a disc,
During recording, recording must be continued while accessing a plurality of unrecorded areas, and during playback, the segments must be accessed so that one music piece can be played correctly and continuously. For this purpose, a segment in one song (for example, M _{4 (1)} ~
The data for connecting M _{4 (4)} ) and the data indicating the unrecorded area are held as the U-TOC information rewritten for each recording operation or erasing operation as described above, and the recording / reproducing apparatus By reading this U-TOC information and accessing the head, the recording / reproducing operation is properly controlled.

Further, as shown in FIG. 4, the recording track on the disk 1 has a continuous cluster CL (= 36 sectors-) consisting of a sub-data area of 4 sectors (1 sector = 2352 bytes) and a main data area of 32 sectors. And one cluster is the minimum unit for recording. One cluster corresponds to 2 to 3 rounds of tracks. The address is recorded for each sector. The 4-sector sub-data area is used as sub-data or a linking area, and the TOC data, audio data, etc. are recorded in the 32-sector main data area.

The sectors are further subdivided into sound groups, and two sectors are divided into 11 sound groups. And 512 in the sound group
The sample data is divided into the L channel and the R channel and recorded. 1 sound group is 1
The amount of audio data is equivalent to 1.6msec.

FIG. 5 schematically shows the area structure of the disk in the radial direction. In the case of a magneto-optical disk, an area in which data is recorded by embossed pits (pre-mastered area) and a groove area provided as a so-called magneto-optical area are roughly divided into pit areas shown in FIG. It is divided into

Here, the P-TOC is repeatedly recorded as the pit area, and as will be described later, this P-TOC is recorded.
In C, the position of U-TOC is shown as U-TOC start address UST _A , and read-out start address RO _A , recordable user area start address RST _A , power cal area start address PC _A, etc. are shown in FIG. Each address location shown is shown.

A groove area is formed following the innermost pit area of the disc, and an area up to the address indicated as the lead-out start address RO _A in the P-TOC in the groove area is formed. It is a recordable area that can be recorded, and is a lead-out area thereafter.

Further, among the recordable area, the recordable user area where the music data track is actually recorded is from the recordable user area start address RST _A to the lead-out start address R.
Up to the position just before O _A.

The area before the recordable user area start address RST _A in the groove area is used as a management area for recording / reproducing operation, the above-mentioned U-TOC and the like are recorded, and the power cal area start is performed. One cluster from the position indicated as the address PC _A is provided as a laser power calibration area. The U-TOC is continuously recorded in three clusters (1 cluster = 36 sectors) from the position indicated by the U-TOC start address UST _A in the management area for this recording / reproducing operation.

<3. P-TOC Sector> Now, as the audio data sector recorded in the sector data form on the disc 1, and the management information for managing the recording / reproducing operation of the audio data, the P-TOC sector will be described first. As the P-TOC information, area designation such as a recordable area (recordable user area) of the disc and management of the U-TOC area are performed. When the disc 1 is a premastered disc which is a read-only optical disc, it is possible to manage the music recorded in the ROM by the P-TOC.

The format of the P-TOC is shown in FIG.
FIG. 6 shows one sector (sector 0) of P-TOC information repeatedly recorded in the pit area of FIG. The P-TOC format is sector 1
After that, it is an option.

The data area of the sector of P-TOC (4 bytes x 588, 2352 bytes) has all 0s at the head position.
Alternatively, 4 bytes of a synchronization pattern formed of 1-byte data of all 1s, an address indicating a cluster address and a sector address, etc. are added, and the above is used as a header to indicate that it is a P-TOC area.

Further, an identification ID by an ASCII code corresponding to the character "MINI" is added at a predetermined address position following the header. In addition, the disc type, recording level, song number of the first song recorded (First TNO), and song number of the last song (Last TNO) are shown, and the address of each point shown in Fig. 5 is displayed. , Lead-out start address RO _A , power cal area start address PC _A , U-TOC (U-T in FIG. 7, which will be described later).
Start address US of OC sector 0 data area)
T _{A is} recorded as the start address RST _A of the recordable area (recordable user area).

Subsequently, a correspondence table instruction data section having table pointers (P-TNO1 to P-TNO255) for making each recorded music piece correspond to a parts table in a management table section described later is prepared.

Then, in the area following the correspondence table instruction data portion, (01h) to (FF) are associated with the table pointers (P-TNO1 to P-TNO255) in the correspondence table instruction data portion.
A management table section provided with up to 255 parts tables up to (h) is prepared (herein, "h"
Numerical values with are so-called hexadecimal notation). Each part table can record a start address as a starting point, an end address as an ending point, and mode information (track mode) of the segment (track) for a certain segment.

The mode information of the track in each parts table is information as to whether the segment is set to overwrite inhibition or data copy inhibition,
Whether or not it is audio information, monaural / stereo type, etc. are recorded.

In each of the parts tables (01h) to (FFh) in the management table section, the contents of the segment are indicated by the table pointers (P-TNO1 to P-TNO255) in the corresponding table instruction data section. That is, for the first piece of music, a certain parts table (for example, (01h) is used as the table pointer P-TNO1. However, the table pointer is actually the byte position in the P-TOC sector 0 by the predetermined arithmetic processing. Is recorded), in which case the start address of the parts table (01h) is the start address of the recording position of the first piece of music, and similarly the end address is The end address is the position where the first piece of music is recorded. Further, the track mode information becomes information about the first music piece.

Similarly, for the second piece of music, the parts table indicated by the table pointer P-TNO2 (eg (02h))
The start address, end address, and track mode information of the recording position of the second tune are recorded in. Similarly, since the table pointers up to P-TNO255 are prepared, it is possible to manage up to the 255th song on the P-TOC. Then, by forming the P-TOC sector 0 in this way, a predetermined music piece can be accessed and reproduced, for example, during reproduction.

In the case of a recordable / reproducible magneto-optical disk, since there is no so-called pre-mastered music area, the above-mentioned correspondence table instruction data section and management table section are not used (these are U-described later). TO
(It is managed by C), so each byte is all "00h". However, for pre-mastered type discs in which all songs are recorded in ROM form (pit form), and hybrid type discs having both ROM area and magneto-optical area as areas for recording songs, etc., The correspondence table instruction data section and the management table section are used to manage the music in the ROM area.

<4. U-TOC sector> followed by UT
The OC will be explained. FIG. 7 shows a format of one sector (sector 0) of the U-TOC, and mainly records management information about a song recorded by the user and an unrecorded area (free area) in which a new song can be recorded. Data area. The U-TOC is also an option after sector 1. For example, when trying to record a certain piece of music on the disc 1, the system controller 11 can search for a free area on the disc from the U-TOC and record audio data there. ing. Further, at the time of reproduction, the area in which the music to be reproduced is recorded is discriminated from the U-TOC, and that area is accessed to perform the reproduction operation.

As in the P-TOC, the U-TOC sector (sector 0) shown in FIG. 7 is provided with a header first, and then, at a predetermined address position, a manufacturer code, a model code, and a song number of the first music piece. (First TNO), song number (Last TNO) of the last song, sector usage, disc serial number, disc ID, and other data are recorded. Various table pointers (P-DFA, P-EMPTY, P-
An area for recording FRA, P-TNO1 to P-TNO255) is prepared.

Then, 255 parts tables from (01h) to (FFh) are provided as management table sections to be associated with the table pointers (P-DFA to P-TNO255) of the corresponding table instruction data section. 6, the start address as the starting point, the end address as the ending point, and the mode information (track mode) of the segment are recorded in the same manner as the P-TOC sector 0 in FIG. This U-TO
In the case of C sector 0, the segment shown in each parts table may be connected to another segment subsequently, so link information indicating the parts table in which the start address and end address of the connected segment are recorded. Can be recorded.

In this type of recording / reproducing apparatus, as described above, the data of one music piece is physically discontinuous, that is, even if the data is recorded over a plurality of segments, reproduction is performed by accessing the segments while accessing them. Since there is no hindrance to the operation, the music recorded by the user may be recorded in a plurality of segments for the purpose of efficient use of the recordable area. Therefore, link information is provided, for example, the number given to each parts table.
(01h) to (FFh) (Actually, the predetermined arithmetic processing
The part tables can be linked by designating the part tables to be linked by a numerical value that is a byte position in OC sector 0). (Note that since the music recorded in the pit form in advance is not usually segmented, the link information is all "(00h)" in the P-TOC sector 0 as shown in FIG. )

That is, in the management table section in the U-TOC sector 0, one part table represents one segment, and, for example, a music piece formed by connecting three segments is linked by link information. The segment position is managed by the three parts tables.

Each parts 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 that segment are shown below.

The table pointer P-DFA is shown for a defective area on the magneto-optical disk 1, and a track portion (= segment) which is a defective area due to a scratch or the like is shown.
One part table or the first part table in multiple part tables is specified. In other words, if there is a defective segment in the table pointer P-DFA
Any one of (01h) to (FFh) is recorded, and the defective segment is indicated by the start and end addresses in the parts table corresponding thereto. Further, when there is another defective segment, another part table is designated as the link information in the part table, and the defective segment is also shown in the part table. Then, if there is no other defective segment, the link information is, for example, "(00h)", and thereafter there is no link.

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

The table pointer P-FRA indicates the writable free area (including the erased area) on the magneto-optical disk 1, and 1 or the track portion (= segment) which is the free area is indicated. The first part table in multiple part tables is specified. In other words, if there is a free area, the table pointer P-
In the FRA, any one of (01h) to (FFh) is recorded, and in the parts table corresponding to that, the segment which is the free area is indicated by the start and end addresses. Further, when there are a plurality of such segments, that is, when there are a plurality of parts tables, the parts table with link information of "(00h)" is sequentially specified by the link information.

FIG. 8 schematically shows the management state of the free area segments by the parts table. This is the correspondence table instruction data when segment (03h) (18h) (1Fh) (2Bh) (E3h) is set as free area.
Continuing from P-FRA, parts table (03h) (18h) (1Fh) (2Bh)
The state represented by the link (E3h) is shown. The defective area and the unused parts table management mode described above are the same.

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 designated, which indicates that the entire recordable user area of the disc is an unrecorded area (free area). And it remains in this case (02h) ~ (FFh)
Since the parts table of will not be used,
The part table (02h) is specified by the above-mentioned table pointer P-EMPTY, the part table (03h) is specified as the link information of the part table (02h), and the part table is specified as the link information of the part table (03h).
(04h) is specified, and so on.Parts table (FFh)
Are linked up to. 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, in the parts table (01h), 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 music pieces recorded by the user on the magneto-optical disk 1. For example, in the table pointer P-TNO1, one or a plurality of pieces of data in which the first music piece is recorded are recorded. A parts table indicating the temporally first segment of the segments is specified.

For example, the track of the first music is not divided into tracks on the disc (that is, one segment).
When recorded, the recording area of the first music piece is recorded as the start and end addresses in the parts table indicated by the table pointer P-TNO1.

Further, for example, when the second music piece is discretely recorded in a plurality of segments on the disc, each segment is designated in chronological order to indicate the recording position of the music piece. 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. 8). Thus, for example, all the segments in which the data constituting the second music is recorded are sequentially designated and recorded, so that the data of the U-TOC sector 0 is used to reproduce the second music or the second music. When overwriting 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 segments, and to perform recording using the recording area efficiently.

As described above, the area management on the disk is P
-Music recorded by the TOC and recorded in the recordable user area, free areas, etc.
Performed by OC. These TOC information are read into the buffer RAM 13 so that the system controller 11 can refer to them.

<5. Free area management> U-TO
The management form of the free area in C will be described with reference to FIG. FIG. 9A schematically shows an example of the usage pattern of segments in a disc in which two songs are recorded in the recordable user area. Here, the first piece of music is composed of two segments M _{1 (1)} and M _{1 (2)} , and the second piece of music is M _{2 (1)} , M _{2 (2)} , M _{2 (} It is composed of 3 segments of ₃₎ . Then, five segments F _{1 to} F ₅ are left as free areas. The end address of the segment F ₁ is immediately before the lead-out address of the disc.

The segments F _{1 to} F ₅ are linked and managed in the U-TOC in the order of F ₁ , F ₂ , F ₃ , F ₄ , F ₅ in the above-mentioned form of FIG. When the recording of the music piece is performed in the free area, it is first recorded from the segment F ₁ and then accessed and recorded in the link order.

Now, assuming that the deletion of the second piece of music is executed from the state of FIG. 9A, M _{2 ( 1)} , M _{2 (2)} , M _{2 (3)}
Each segment will be a free area thereafter. Therefore, the data relating to the free area linked from the correspondence table instruction data P-FRA in the U-TOC must be rewritten. At this time, a new free area segment is not managed by linking from the last segment (F-5) of the free area until then, and a new link structure is created.

That is, if the segment located at the outermost periphery of the disc is the free area, it is linked first, and the other segments are linked in the address order from the inner periphery of the disc. Therefore, as shown in FIG. 5B, the U-TOC data is rewritten so that the free area is managed by being linked with F ₁ , F ₂ ... F ₈ .

As described above, when the free area is always located at the outermost circumference first, this is managed first, and the other areas are sequentially linked and managed from the inner circumference side. It minimizes the possibility that the recorded music will be divided into multiple segments, and even if it is divided, recording can be performed so that it is continued in relatively close segments, and access time during playback is required. It is possible to reduce the noise and prevent the deterioration of the earthquake resistance. In other words, since the recording operation is usually performed sequentially from the inner circumference side, the free area on the outermost circumference side of the disc is often the largest free area, and one song must be recorded in multiple segments. This is the first because it is less promising. If the other free areas are linked in the order of addresses from the inner circumference side, the access distance will be the shortest.

<6. Processing Based on Operation of End Search Key> In the recording / reproducing apparatus of the present embodiment as described above,
As shown in FIG. 1, the end search key 46 is provided, and the user can use it to perform a desired operation. The processing (control of the system controller 11) based on the operation of the end search key 46 will be described below.

FIG. 9 is a flow chart showing the processing of the system controller 11 related to the operation of the end search key 46. It should be noted that the processes in the normal recording mode and the reproduction mode are shown only as the recording mode process and the reproduction mode process, and detailed description thereof will be omitted.

During the playback mode operation (playback, playback pause, etc.) or during stoppage (F100), the end search key 46
When the recording switch 33 is operated without pressing (F1
(01 → F102 → YES) starts the normal recording process. That is, the tune number (track number) is incremented, and the recording is started from the position of the optical head at the time of reproduction or reproduction pause (F103 → F104). In this case, if a music piece has already been recorded at the recording position, it will be erased. That is, as in the case of the tape recorder, the user forcibly erases past data from an arbitrary position and records.

However, when the end search key 46 is operated, the process proceeds from step F101 to F105, and first, at this point, the track number and time of the last track are displayed. For example, if the disc has been recorded with 5 songs, "5" is displayed as the final song number (track number). Since this numerical value is managed as “Last TNO” in the U-TOC, the system controller 11 controls the display operation by referring to it. Further, the time display is performed with reference to the end position (end address position) of the final music piece. For example, when five songs are recorded, the total time until the end of the fifth song, or the remaining recordable time (that is, a value obtained by converting the total of the free area at that time into time) is displayed. Note that, for example, the progress time at the end address point of only the fifth song, the date and time information of recording the fifth song, and the like may be displayed. In the display state of the information of the end address point of the final song, the next operation is waited for. That is, the system controller 11 continues to operate the recording switch (F106) or the playback key 3
6 is pressed (F107) or AMS key 39 is pressed (F
108) or whether the stop key 38 is pressed (F109).

Here, when the user presses the stop key 38, the stop processing is directly started (F120). If the user turns on the recording switch 33, the process proceeds to step F110 to allow the optical head 3 to access the head address of the free area. That is, the start address of the first parts table indicated by the table pointer P-FRA on the U-TOC is read and the address is accessed. Therefore, for example, in the case of FIG. 9A, the optical head 3 is moved to the head position of the full area F ₁ .

Then, the tune number is incremented and recording in the free area is started (F111 → F121). In this case, unlike the normal recording process of step F104, the free area is sequentially accessed for recording. In other words, the songs recorded up to that point are not deleted. For example running first recording for the free area F ₁ in the example of FIG. 9, if the still recording followed when the free area F ₁ is completed, will follow the link structure in U-TOC, thus being subsequently input The voice data to be recorded is recorded in the free area F ₂ , and thereafter, is recorded as the free areas F ₃ and F ₄ .

Next, if the reproduction key 36 is pressed after the end search key 46 is pressed, the process proceeds to step F1.
The process proceeds from 07 to F112, and the optical head 3 is made to access the end address position of the final music piece displayed in step F105. Then, when the access is completed, the reproduction is suspended.

Here, the search key 40 waits for a search operation in the review (fast reverse) direction.
(F113). Then, when a review search operation is performed, the end address position of the final song is used as a starting point in the return direction,
While the key is pressed, review playback is executed (F11
4, F115). It should be noted that it is conceivable that the AMS key 39 and the stop key 38 are accepted while the search key 40 is on standby, and the process proceeds to step F118 or F120.

When the user releases the finger from the search key 40 to stop the review reproduction operation, the reproduction operation is started from the position where the review reproduction is finished, and the normal reproduction mode is returned (F116, F117).

When the AMS key 39 (AMS key with forward heading) is pressed after the end search key 46 is pressed, the process proceeds from step F108 to F118 and the display is made at step F105. The optical head 3 is made to access the beginning position (start address position) of the final song. Of course, the start address information can be obtained from the U-TOC. Then, at the end of access, the playback operation is started, and the normal playback mode is restored (F119
→ F117).

By the system controller 11 performing the above-described processing in accordance with the operation of the end search key 46, the user performs a recording operation by forcibly recording from an arbitrary position, and recording until then. You can select the method of recording in the free area so that the existing songs are not erased. Further, when it is desired to reproduce the vicinity of the end address position of the final music for confirmation of recording, etc., the end search key 46 and the reproduction key 36 can be operated to easily and quickly access the position, and review reproduction or It can be played normally after the review.

<7. Example of operation by end search key> FIGS. 11 to 16 show various examples of operation states by processing based on the operation of the end search key 46.

FIG. 11 shows the four tracks M _{1 to} M _{4 on} the disc 1.
It shows a case where the music pieces are successively recorded as physical positions on the disc 1 in order, and the music piece M _{4 and} subsequent music pieces are set as the free area F ₁ . In this case, the reference position when the end search key 46 is operated is the end address of the music M ₄ shown as ES in FIG. And
When the reproduction key 36 is pressed following the operation of the end search key 46 and the review reproduction operation is further performed, as shown by the broken line in the drawing, the end address of the music M ₄ is moved forward (toward the inner circumference of the disc). The replay is performed, and when the review replay is finished, the normal replay is performed as shown by the solid line in the figure (steps F112, F112, F113, F114, F1).
15, processing of F116 and F117). When the AMS key 39 is pressed next to the operation of the end search key 46, the start address of the music M ₄ is accessed and reproduction is executed as shown in the figure (processing of steps F119 and F117).

When the recording switch 33 is operated next to the operation of the end search key 46, the free area F ₁
Access to the start address of the free area F ₁
Is recorded (processing of steps F110, F111, F121).

By the way, when the recording head 33 is operated without operating the end search key 46 when the optical head is at the position indicated by PP in the figure by the reproduction or reproduction pause operation as shown in FIG. 11B. Will perform recording while erasing the data (hatched portion) of the music pieces M ₃ and M ₄ from the PP position (processing of steps F103 and F104).

FIG. 12 shows _four pieces of music M _{1 to} M _{4 on} the disc 1.
The songs are recorded in order on the disc 1 and the free area F ₁ is provided after the song M _4, but the song M ₂ is further added.
It shows the case where the free area F ₂ exists between M ₃ and M ₃ . Also in this case, the reference position when the end search key 46 is operated is the end address of the music M ₄ shown as ES in FIG.

Then, when the reproduction key 36 is pressed following the operation of the end search key 46, and the review reproduction operation is further performed, as shown by the broken line in the figure, from the end address of the music M ₄ to the front (on the inner circumference side of the disc). ) Is performed, and when the review playback is completed, normal playback is performed as indicated by the solid line in the figure (F112, F112,
F113, F114, F115, F116, F117). When the AMS key 39 is pressed next to the operation of the end search key 46, the start address of the music M ₄ is accessed and the reproduction is executed as shown in the figure (F119, F117).

When the recording switch 33 is operated next to the operation of the end search key 46, the start address of the free area F _{1 which is} the _first free area on the U-TOC is accessed and the free area F ₁ is accessed. Is recorded. If the recording is not ended only in the free area F ₁ , the free area F ₂ is subsequently accessed and the recording is continued (F110, F111, F121).

When the recording head 33 is operated without operating the end search key 46 when the optical head is at the position indicated by PP in the drawing due to the reproduction or reproduction pause operation as shown in FIG. 12B. Will continue to record over the free area F ₂ while erasing the data in the shaded area of the song M ₂ from that PP position (F
103, F104).

FIG. 13 shows the four tracks M _{1 to} M _{4 on} the disc 1.
This is a case in which the songs are physically and continuously recorded in the order of M ₁ , M ₂ , M ₄ , and M ₃ , and the free region F ₁ is set after the song M ₄ . In this case, the reference position when the end search key 46 is operated is the end address of the music M ₄ shown as ES in FIG.

Then, when the reproduction key 36 and the review search key 40 are pressed following the operation of the end search key 46, the fast reverse reproduction is performed from the end address of the music M ₄ forward as shown by the broken line in the figure. Further, when the review reproduction is completed, normal reproduction is performed as indicated by the solid line in the figure. When the AMS key 39 is pressed after the operation of the end search key 46, the start address of the music M ₄ is accessed and the reproduction is executed as shown in the figure. In addition, the next to the recording switch 33 of the operation of the end search key 46 is operated, is access to the start address of the free area F _1, recording for the free area F ₁ is executed.

FIG. 14 shows _four pieces of music M _{1 to} M _{4 on} the disc 1.
Songs are recorded in the order of M ₁ , M ₂ , M ₄ , M ₃ ,
The area on the outer peripheral side of ₃ is a free area F _1, and there is a free area F ₂ between the music pieces M ₂ and M ₄ . The reference position when the end search key 46 is operated is the music M shown as ES in FIG.
It becomes the end address of ₄ .

Then, by operating the reproduction key 36 and the review search key 40 subsequent to the operation of the end search key 46, fast reverse reproduction is performed forward from the end address of the music M ₄ as indicated by the broken line in the figure. When the review reproduction is finished, normal reproduction is performed as shown by the solid line in the figure. When the AMS key 39 is pressed next to the operation of the end search key 46, as shown in FIG.
The start address of ₄ is accessed and playback is executed. Further, when the recording switch 33 is operated after the operation of the end search key 46, the start address of the free area F _{1 which is} the _first free area on the U-TOC is accessed, and recording on the free area F ₁ is performed. To be executed. If recording is continued, the free area F ₂ is subsequently accessed and recording continues.

FIG. 15 shows the disc 1 with _four music pieces M _{1 to} M ₄ .
Songs are recorded in the order of M ₁ , M ₂ , M ₄ , M ₃ ,
The area on the outer peripheral side of ₃ is a free area F _1, and there is a free area F ₂ between the music pieces M ₄ and M ₃ . The reference position when the end search key 46 is operated is music M shown as ES in FIG.
It becomes the end address of ₄ .

Then, by operating the reproduction key 36 and the review search key 40 subsequent to the operation of the end search key 46, fast reverse reproduction is performed forward from the end address of the music M ₄ as shown by the broken line in the figure. When the review reproduction is finished, normal reproduction is performed as shown by the solid line in the figure. When the AMS key 39 is pressed next to the operation of the end search key 46, as shown in FIG.
The start address of ₄ is accessed and playback is executed. Further, when the recording switch 33 is operated after the operation of the end search key 46, the start address of the free area F _{1 which is} the _first free area on the U-TOC is accessed, and recording on the free area F ₁ is performed. To be executed. If recording is continued, the free area F ₂ is subsequently accessed and recording continues.

FIG. 16 shows _four pieces of music M _{1 to} M _{4 on} the disc 1.
This is the case where the songs are recorded in the order of M ₁ , M ₂ , M ₄ , and M ₃ , and there is no free area. End search key 46
The position serving as a reference when is operated is the end address of the music M ₄ shown as ES in FIG.

Then, by operating the reproduction key 36 and the review search key 40 subsequent to the operation of the end search key 46, fast reverse reproduction is performed forward from the end address of the music M ₄ as shown by the broken line in the figure. When the review reproduction is finished, normal reproduction is performed as shown by the solid line in the figure. When the AMS key 39 is pressed next to the operation of the end search key 46, as shown in FIG.
The start address of ₄ is accessed and playback is executed.

In this case, even if the recording switch 33 is operated after the operation of the end search key 46, the recording is not executed because the free area does not exist. Although description of this processing is omitted in the flowchart of FIG. 10, for example, a display indicating that full area recording has been completed is performed.

Although the embodiment of the recording apparatus and the reproducing apparatus of the present invention has been described above, the present invention is not limited to this embodiment, and various changes can be made in the scope of the invention with respect to the processing method and the configuration. Needless to say. For example, in FIG.
In the processing of (1), there are various other possibilities such as a usage pattern of operation keys and a mode transition state. Alternatively, the end address of the final song may be accessed immediately when the end search key is operated. Further, the end search key may be provided on a remote commander, a connected headphone, a microphone or the like to enable remote operation.

In the embodiment, only the magneto-optical disk has been described, but the disk 1 is a premastered disk in which music data is recorded in a pit form, or a hybrid having a pit area and a magneto-optical area as a music data area. It goes without saying that the same operation can be realized even when the disc is used.

[0108]

As described above, in the recording apparatus of the present invention, the recording end search operation means and the unrecorded information indicated in the management information when the recording operation is performed when the recording end search operation means is operated. Since the control means for controlling the recording operation on the disc from the start address position as the area is provided, if the recording operation is performed after the operation of the recording end search operation means, the recording is performed until then. Allows the user to select from two recording methods so that the recorded track data will be recorded in the unrecorded area without being erased, and in the case of normal recording operation, recording will be performed from the address at that time. Has the effect of becoming.

Further, as the reproducing apparatus of the present invention, based on the operation of the recording end search operation means and the recording end search operation means, to the end address of the last track data of the track data recorded on the disc. Since the control means which can be accessed is provided, it is possible to easily and quickly perform reproduction and confirmation of the recording end portion (near the end address of the last track) by this recording end search operation means. The effect is that you will be able to.

[Brief description of drawings]

FIG. 1 is a plan view, a front view, a right side view, and a left side view of a recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram of a main part of a recording / reproducing apparatus of an embodiment.

FIG. 3 is an explanatory diagram of a recording form on a disc.

FIG. 4 is an explanatory diagram of a sector form on a disc.

FIG. 5 is an explanatory diagram of an area structure of a disc.

FIG. 6 is an explanatory diagram of P-TOC sectors on a disc.

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

FIG. 8 is an explanatory diagram of a link structure of U-TOC sectors in the disc.

FIG. 9 is an explanatory diagram of a free area management mode by U-TOC.

FIG. 10 is a flowchart of a process based on an end search key operation according to the embodiment.

FIG. 11 is an explanatory diagram of an operation based on an end search key operation according to the embodiment.

FIG. 12 is an explanatory diagram of an operation based on an end search key operation according to the embodiment.

FIG. 13 is an explanatory diagram of an operation based on an end search key operation according to the embodiment.

FIG. 14 is an explanatory diagram of an operation based on an end search key operation according to the embodiment.

FIG. 15 is an explanatory diagram of an operation based on an end search key operation according to the embodiment.

FIG. 16 is an explanatory diagram of an operation based on an end search key operation according to the embodiment.

[Explanation of symbols]

 1 disk 3 optical head 8 encoder / decoder section 11 system controller 12 memory controller 13 buffer RAM 14 encoder / decoder section 15 D / A converter 18 A / D converter 19 key input section 30 recording / reproducing apparatus main body 31 display section 33 recording Switch 36 Playback key 38 Stop key 39 AMS key 40 Search key 46 End search key

Claims (2)

[Claims] 1. Data is recorded in track units, and data is recorded on the disc on which management information for managing each track data and unrecorded area is recorded by using the management information. In a recording apparatus capable of performing recording end search operation means, and when a recording operation is performed when the recording end search operation means is operated, from the head address position as an unrecorded area indicated in the management information to the disc A recording device, comprising: a control unit that controls the recording operation to start. 2. A disc in which data is recorded on a track-by-track basis and management information for managing each track data and an unrecorded area is recorded, the data is reproduced using the management information. In the reproducing apparatus capable of performing the recording end search operation means, and the control means capable of accessing the end address of the last track data of the track data recorded on the disc based on the operation of the recording end search operation means. And a reproducing apparatus characterized by including.