JPH0731900B2 - Disk recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A Industrial field of use B Outline of the invention C Conventional technology D Problems to be solved by the invention E Means for solving problems F Action G Example (G-1) Configuration of disk recording / reproducing device (first) 1 and 2) (G-2) Operation of disk recording / reproducing apparatus (FIGS. 3 to 6) H Industrial effect A The present invention relates to a recordable disk to which an absolute address is given in advance. A program area and a lead-in area are provided in the program area, data such as performance information is recorded in the program area, and catalog information indicating the recorded contents of the program area is recorded in the lead-in area. The present invention relates to a disc recording / reproducing device for reproducing the program area based on the above, and is applied to, for example, a compact disc (CD) playing device capable of recording / reproducing.

B. Summary of the Invention The present invention provides a program area and a lead-in area on a recordable disc to which an absolute address is previously given, such as a compact disc (CD) recording / reproducing apparatus capable of recording and reproducing, and the program area A disc recording / reproducing apparatus for recording data such as performance information, recording catalog information indicating recorded contents of the program area in the lead-in area, and reproducing the program area based on the catalog information in the lead-in area. In the above, the catalog information in the lead-in area is reproduced, rearranged in an arbitrary order, and re-recorded.

C Conventional Technology Conventionally, a so-called compact disc (C
A disc player device such as a CD player for reproducing D) is generally provided. In the above compact disc (CD), in the lead-in area provided inside the program area in which audio information is recorded,
A table of contents showing the recorded contents of the disc (TOC: Table of Con
As the tents) information, a time code indicating the start time of each song in order for all the songs recorded in the program area, the first song number and the last song number, the time when the last song ends, etc. are recorded. There is. Then, the CD player first reproduces the catalog information recorded in the lead-in area of the compact disc (CD), and reproduces the performance information of each song from the program area in the order of the song number based on the catalog information. Or, it is designed to perform program playback.

Further, since the conventional CD player is only for reproduction, it is possible to record and reproduce by using a magneto-optical disc formed of a rewritable magneto-optical recording medium, for example, compared with the above compact disc (CD). The development of a disk system that maintains upward compatibility has been promoted.

Recordable disc 1 used in the above disc system
Is, for example, as shown in the schematic diagram of FIG.
The pregrooves 2 (where λ is the wavelength of the information recording laser beam) are formed in a spiral shape, and the land portions 3 between the pregroups 2 have a depth λ / 4 along the circumferential direction. An embossed area 4 formed of a concavo-convex pattern of pits and a data recording area 5 for magneto-optical recording are alternately arranged at equal pitches. The recordable disc 1 is provided with a lead-in area 7 on the inner peripheral side of the program area 6 in which performance information is recorded, and the TOC information indicating the recorded contents of the program area 6 is the lead-in area. The data is recorded in the area 7. Further, in the embossed area 4 of the recordable disc 1, a 24-bit synchronizing signal, 14 bits (1 symbol), which constitutes one frame of a data format standardized in a compact disc (CD) as shown in FIG. Subcode of and 14
× 588 channel bit EFM consisting of 32 bits (32 symbols) of performance information data and parity, and 3 bits of margin bits provided between each symbol.
(Eight to Fourteen Moudulation) Of the modulation data, the synchronization signal and the sub-coat are recorded as an uneven pattern formed by embossing, and absolute time information (absolute address) from the start position of the program area 6 as the sub-coat is recorded. Is given.

In the disc system using the recordable disc 1, the embossed area 4 of the recordable disc 1 is used.
The rotation of the disc is controlled at a constant linear velocity (CLV) by using the absolute address reproduced from, and the information is recorded in the data format standardized on the compact disc (CD).

D Problem to be solved by the invention By the way, in a disc system capable of recording and reproducing and maintaining upward compatibility with the above compact disc (CD), all the songs are continuously recorded in the program area of the recordable disc. It is not always recorded as a new song, for example, a new song is recorded in an unrecorded area remaining between a certain song and the next song, or so-called over-recording, that is, a new song is re-recorded in a recorded area. When doing so, the order of the previously recorded songs becomes unclear.

In view of the above problems, the present invention provides a program area and a lead-in area on a recordable disc to which an absolute address has been given in advance, and records data such as performance information in the program area, and the program area In the disc recording / reproducing apparatus for recording the catalog information indicating the recorded contents of the above in the lead-in area and reproducing the program area based on the catalog information in the lead-in area, the reproduction order of the information recorded in the program area is With the purpose of allowing the user to arbitrarily specify the information in the lead-in area, it is possible to play back the information in the lead-in area, rearrange it in any order, and re-record it. A device is provided.

E Means for Solving the Problems In order to solve the above problems, the present invention provides a program area and a lead-in area on a recordable disc to which an absolute address is given in advance, and the performance information and the like are provided in the program area. While recording data, record information indicating the recorded contents of the program area in the lead-in area,
In a disc recording / reproducing apparatus for reproducing the program area based on the catalog information of the lead-in area, the catalog information storing means for storing the catalog information reproduced from the lead-in area, and the catalog information storing means for storing the catalog information. Rearrangement control means for arbitrarily rearranging the order of the catalog information,
Operation input means for designating the order of the catalog information and recording means for reading the catalog information rearranged in order from the catalog information storage means and re-recording in the lead-in area of the recordable disc are provided. .

In the present invention, the catalog information reproduced from the lead-in area of the recordable disc is stored in the catalog information storage means and rearranged by the rearrangement control means in an arbitrary order designated by the operation input means. Then, the catalog information whose order has been rearranged is read from the catalog information storage means and re-recorded in the lead-in area of the recordable disc. The catalog information re-recorded in the lead-in area indicates a new reproduction order of each data recorded in the program area.

G Example In the example described below, a magneto-optical disk having a perpendicular magnetization film having a magneto-optical effect as a recording medium is used as the recordable disk 1 having the recording format shown in FIG. Disk 1 constant linear velocity (CLV: Cons
The present invention is applied to a disk recording / reproducing apparatus for recording / reproducing performance information in the data format shown in FIG. 8 standardized in a compact disk (CD) by being rotationally driven by a tant Lenear Velocity). .

G-1 Structure of Disk Recording / Reproducing Apparatus As shown in the block diagram of FIG. 1, this disk recording / reproducing apparatus was installed so as to face each other with the recordable disk 1 rotatably driven by the disk motor 11 interposed therebetween. An optical head 12 and a magnet 13 are provided, and the optical head 12 is connected to an emboss reproduction amplifier 14 and an MO reproduction amplifier 15 and a recording amplifier 27.

The optical head 12 is composed of optical components such as a laser diode, a photodetector, a lens and a beam splitter, and records and reproduces information by irradiating the recordable disc 1 with laser light. Also the above magnet
13 is the recordable disc 1 utilizing the magneto-optical effect.
A magnetic field for recording or erasing information is applied to the magnetic field, and the directions of the magnetic poles are reversed in the recording operation mode and the erasing operation mode.

Of the reproduction RF signal read from the recordable disc 1 by the optical head 12, the reproduction signal from the embossed area 4 is supplied to the decoder 16 via the embossed reproduction amplifier 14 and is decoded by the decoder 16. The address data is supplied to the microcomputer 17. In addition, the recordable disc 1 described above
The reproduced signal reproduced from the data recording area 5 of the
The signal is supplied to the reproduction processing circuit 18 via the reproduction amplifier 15 and predetermined signal processing is performed. And the recordable disc 1
The performance information reproduced from the program area 6 of the digital analog-to-analog (D / A) converter 2 is reproduced by the reproduction processing circuit 18.
0 is supplied to the D / A converter 20, converted into an analog signal by the D / A converter 20, and output as a reproduced audio signal S ₀ from the signal output terminal 22 via the buffer amplifier 21. In addition, the TO reproduced from the lead-in area 7 of the recordable disc 1
The C information is supplied from the reproduction processing circuit 18 to the TOC buffer memory 19 and stored in the buffer memory 19.

In this disc recording / reproducing apparatus, an audio signal Si recorded in the program area 6 of the recordable disc 1 is recorded.
Is supplied from the signal input terminal 23 to the analog / digital (A / D) converter 25 via the buffer amplifier 24.
Digitized by / D converter 25. And the above A /
The performance information digitized by the D converter 25 is subjected to predetermined signal processing by a recording signal processing circuit 26 and then supplied to the optical head 12 through the recording amplifier 27, and the program area 6 of the recordable disc 1 is supplied. It will be recorded in.

Here, the output of the A / D converter 25 is also supplied to the microcomputer 17 as a silent portion detection signal. Further, the microcomputer 17 is connected with operation keys 28 for inputting control data and a display 29 for displaying various data.

As shown in the block diagram of FIG. 2, the functional configuration of the microcomputer 17 is shown in the block diagram of FIG.
A key input processing unit 40 that monitors the operation state of the device and receives control data input, an internal memory 41 that stores various data such as a predetermined operation program, a memory address that generates a data write / read address for the TOC buffer memory 19. It includes a generation unit 42, a display control unit 43 that controls the operation of the display unit 29, a renumbering processing unit 44 that performs a predetermined renumbering process on an operation program given by the internal memory, and the like.

In the recordable disc 1, for example, 60 minutes of performance information can be recorded in the program area 6, and the first song is
Start playing at 00 minutes 00 seconds and finish at 05 minutes 00 seconds,
The second song starts playing at 08:00 and ends at 13:00. The third song begins at 15:03 and starts at 20:20.
The performance ends at 00 seconds, the 4th song starts at 28 minutes 00 seconds, ends at 36 minutes 00 seconds, and the fifth song ends at 36 minutes.
It is assumed that the performance information for five songs has already been recorded so that the performance starts from 20 seconds and ends at 41:00 when the recorded contents of the program area 6 are recorded in the lead-in area 7. As the table of contents (TOC) information to show, as shown in Table 1 which shows each recording area of the above-mentioned 1st to 5th music with absolute time information (absolute address data) together with the music number
It is assumed that TOC information is recorded.

G-2 Operation of Disc Recording / Reproducing Apparatus As shown in the flowchart of FIG. 3, this disc recording / reproducing apparatus, when the recordable disc 1 is loaded (step 101) at the start of operation, firstly, the recordable disc is reproduced. The TOC information recorded in the lead-in area 7 of No. 1 is read by the optical head 12 and reproduced and stored in the TOC buffer memory 19 (step 102) to enter the standby state.

Then, the microcomputer 17 of the disc recording / reproducing apparatus uses the operation key in the key input processing unit 40.
When the playback mode is specified by operating the operation key 28 in the standby state where the operation state of 28 is monitored and the input of control data is received, the recording is performed based on the TOC information stored in the TOC buffer memory 19. Access control for automatically reproducing performance information from the program area 6 of the possible disc 1 in the order of the music number of the TOC information is performed.

Further, the microcomputer 17 in the standby state, as shown in the flowchart of FIG.
When the key operation is accepted (step 201) and the renumbering mode is set (step 202), all the flags attached to each song number of the TOC information in the TOC buffer memory 19 are cleared as shown in Table 2 (step 203), the operation of the display control section 43 is switched, and the renumbering mode is displayed on the display screen of the display 29 with the music number TNOa after the renumbering process set to "1" (step 20).
4) Do.

Here, when the renumbering mode is set, on the display screen of the display unit 29, the character number "RENUM" indicating the renumbering mode is displayed along with the song number [TNOa] after the renumbering process and the current playback. The song number, that is, the song number [TNOb] before the renumbering process is displayed as shown in FIG.

Further, the microcomputer 17 has a PLAY key, STO
By operating the operation keys 28 such as the P key, the FR key, and the FF key, a new first data is recorded from the program area 6 of the recordable disc 1.
The operation of the RENUM key is accepted while the song you want to use as the song is accessed and played (step 205) (step 2).
06) and the TOC information in the TOC buffer memory 19 above,
The song number [TNOb] currently being reproduced is rewritten to a new song number [TNOa] after the renumbering process, and a flag is set (step 207). Then, the new music number [TNOa] after the renumbering process is incremented and displayed on the display screen of the display unit 29 (step 208), and the process returns to the access reproduction operation of step 205.

If the operation of the RENUM key is not accepted in step 206, the operation state of the STOP key is monitored (step 209), and if the operation of the STOP key is not accepted in step 209, the operation of step 205 is performed. Returning to the access reproduction operation, re-numbering by designating a new music number [TNOa] to the music number [TNOb] being reproduced while reproducing each music recorded in the program area 6 of the recordable disc 1 one after another. I do. For example, step 206 above
First, in the state that the song number [TNOb] is "2", RENU
When the operation of the M key is accepted, and then the operation of the RENUM key is accepted while the music number [TNOb] is "5", it is rewritten as shown in Table 3.

When the operation of the STOP key is received in step 209, the TOC information in the TOC buffer memory 19 has the largest song number with the flag set to the song number of the song with no flag set. Are assigned in ascending order (step 210), rearranged in order of song numbers as shown in Table 4 to clear all flags (step 211), and then renumbering mode is canceled (step 212). It will be in a standby state.

Further, in the disc recording / reproducing apparatus, when the eject mode is designated by the operation of the operation key 28 in the standby state, the disc is first stored in the TOC buffer memory 19 as shown in the flowchart of FIG. There is T
The disc 1 on which the OC information can be recorded by the optical head 12
After recording in the lead-in area 7 (step 301),
The eject operation (step 302) is performed to end the operation.

〔The invention's effect〕

According to the present invention, the catalog information reproduced from the lead-in area of the recordable disc can be rearranged in the lead-in area by rearranging it in any order designated by the operation input means. The reproduction order of the information recorded in the program area can be arbitrarily and easily designated by the list information of the lead-in area.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a disc recording / reproducing apparatus to which the present invention is applied, and FIG. 2 is a block diagram schematically showing main functions of a microcomputer provided in the disc recording / reproducing apparatus. 3 is a flow chart showing the operation of the disc recording / reproducing apparatus in the setup mode, FIG. 4 is a flow chart showing the operation of the renumbering mode, and FIG. 5 is a display of the display in the renumbering mode. 6 is a schematic diagram showing the contents, FIG. 6 is a flow chart showing the operation of the disc recording / reproducing apparatus in an eject mode, and FIG. 7 shows a recording format of a recordable disc used in the disc recording / reproducing apparatus. FIG. 8 is a schematic diagram for explaining, and FIG. 8 is also a data frame of information recorded on the recordable disc. It is a schematic diagram showing a Matto. 1 …… Recordable disc 4 …… Emboss area 6 …… Program area 7 …… Lead-in area 12 …… Optical head 16 …… Decoder 17 …… Microcomputer 19 …… TOC buffer memory 28 …… Operation keys 29 …… display

Claims (1)

[Claims] 1. A program area and a lead-in area are provided on a recordable disc to which an absolute address is given in advance, and data such as performance information is recorded in the program area.
In the disc recording / reproducing apparatus for recording the catalog information indicating the recorded contents of the program area in the lead-in area and reproducing the program area based on the catalog information in the lead-in area, the information is reproduced from the lead-in area. The catalog information storage means for storing the catalog information, the rearrangement control means for arbitrarily rearranging the order of the catalog information stored in the catalog information storage means, the operation input means for designating the order of the catalog information, and the rearranged order A disc recording / reproducing apparatus comprising: a recording unit that reads out the catalog information from the catalog information storage unit and re-records it in a lead-in area of a recordable disc.