JPH087475A - Reproducing device and recording device - Google Patents

Abstract

PURPOSE:To unconditionally inhibit a reproducing of a disk by registering reproducing inhibit information and a password on a U-TOC track and a RAM and controlling. CONSTITUTION:First, an inhibit registration operation is executed from an operating section 19 after a disk 1 is installed under the control of a system controller 11 and the U-TOC data of a buffer RAM 13 are rewritten. Then, the data of a first track number are made to a last number+alpha. A number is inputted from the section 19 and registered it to a RAM 11 as a password under the control of the controller 11. When the disk 1 is loaded during a reproducing, P-TOC and U-TOC data are read from the disk 1 and recording/ reproducing is executed. Then, a user inputs a password. The inputted password is compared against the registered password stored in a RAM 11a and a reproducing enable mode is turned on if the words match to each other. If the words do not agree with each other or a password is not inputted, a reproducing is inhibited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing device and a recording device corresponding to a recording medium on which audio data and video data are recorded.

[0002]

2. Description of the Related Art A CD player system has been widely used as a reproducing apparatus capable of reproducing music and the like from an optical disk, and a system capable of reproducing data and video from a disk as a CD-ROM has also been put into practical use. C
A disc on which a moving image is recorded together with audio is recorded as a type of D-ROM, which is called a video CD, and is recorded / reproduced by a so-called MPEG system.

Further, a magneto-optical disk system has been put into practical use as a recording device and a reproducing device capable of recording / reproducing music and the like onto / from a disc. For example, in a system known as a mini disc, a user can easily operate the disc. In addition to playback, it is possible to record the sound of music. When this mini-disc system is used, recording / reproducing audio signals such as music are generally performed. For example, in this mini-disc system, video data can be recorded / reproducing in accordance with music such as music. It is also considered to do so.

[0004]

By the way, as various recording media and recording / reproducing systems have been put to practical use and spread, in particular, individual users reproduce specific recording media other than themselves. There is a desire to not be able to do so.

For example, when the data recorded by oneself is highly confidential and one does not want to show it to others, or when the purchased CD software, video CD software or the like is intended for adults and does not want to be shown to children. This is because it can be considered. To this end, it is necessary for the reproducing apparatus used by the user to be able to prohibit the user from unconditionally reproducing the specific recording medium or a part thereof.

[0006]

In view of the above circumstances, the present invention takes the above-mentioned demands by taking measures so that the contents of a recording medium or a part of the recording medium cannot be reproduced unconditionally. The purpose is to respond.

For this reason, in a reproducing apparatus capable of reading data from a recording medium and reproducing and outputting the data, first, a storage unit capable of storing the password registration data and a predetermined data portion of the data read from the recording medium are recorded. An identification information fetching means for fetching as medium identification information and an input means for inputting a personal identification number are provided. A personal identification registration control means for performing control in the personal identification registration mode is provided. The personal identification registration control means allows the storage medium identification information captured by the identification information capturing means and the personal identification number input from the input means to be stored in the storage means as personal identification registration data. Further, a reproduction control means for controlling the reproduction operation for the loaded recording medium is provided. When the recording medium is loaded, when the recording medium identification information taken in by the identification information taking means coincides with the recording medium identification information stored in the storage means, the reproduction control means inputs the personal identification number. It is assumed that the reproduction operation control is performed according to the result of comparison between the requested and input personal identification number and the personal identification number stored in the storage means.

Further, instead of the identification information fetching means in the above construction, an identification information generating means is provided for calculating a predetermined data portion of the data read from the recording medium to generate the recording medium identification information. The personal identification registration control means enables the storage medium to store the recording medium identification information by the identification information generating means and the personal identification number input from the input means as personal identification registration data. Further, when the recording medium is loaded, the reproduction control means requests the input of the personal identification number if the recording medium identification information by the identification information generating means matches the recording medium identification information stored in the storage means. Then, the reproducing operation for the loaded recording medium is controlled according to the comparison result of the input personal identification number and the personal identification number stored in the storage means.

Further, in a recording apparatus capable of writing data on a recording medium on which main data and management data for managing recording / reproducing operation of the main data are recorded, the following recording control means is provided. To provide. That is, the recording control means stores unconditional reproduction prohibition information in a predetermined area as management data so as to correspond to all tracks of the loaded recording medium or a specific track among the tracks recorded on the recording medium. Configure to be writable.

Further, in the reproducing apparatus capable of reproducing the data from the recording medium in which the main data and the management data for managing the recording / reproducing operation of the main data are recorded, it is possible to input the personal identification number. There are provided an input means, a storage means capable of storing the personal identification registration data, and a personal identification registration control means capable of storing the personal identification number inputted from the input means as the personal identification registration data in the storage means.
Further, a discriminating means for discriminating the presence or absence of the unconditional reproduction prohibition information for the recording medium or each track recorded on the recording medium is provided from the management data read from the recording medium. Then, the reproduction control means for controlling the reproduction operation is configured as follows. That is, when the presence of the unconditional reproduction prohibition information is determined by the determination means when the recording medium is loaded, the password input is requested. Then, according to the result of comparison between the input personal identification number and the personal identification number stored in the storage means, the reproduction operation control for the loaded recording medium is performed.

Further, in the above-mentioned configuration as each reproducing apparatus, it is possible to change from the state in which the password registration data is stored in the storage means to the state in which all or part of the password registration is canceled, and the password registration is performed. At the time of reproducing the canceled recording medium, an output capable of recognizing that the cancellation of the password registration is executed is executed.

[0012]

With the above-described structure, the reproduction can be performed only when the secret code registered in the reproducing apparatus is correctly input for the specific recording medium or the specific track among the tracks recorded on the recording medium. . Further, when an operation for canceling the password registration is performed, by displaying the execution of the operation or the like, the user who registered the password can recognize the fact when another person cancels the password registration. .

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording / reproducing apparatus for a magneto-optical disk and a reproducing apparatus for an optical disk according to the first and second embodiments of the present invention will be described below as an example. Regarding the recording / reproducing apparatus, a system capable of recording / reproducing audio data using a mini disk system and a system capable of recording / reproducing video data in addition to audio data will be described. Then, in this system, the user himself / herself has selected a specific disc or a specific audio / audio recorded on the disc.
A method for prohibiting unconditional reproduction of video will be described. As for the reproducing apparatus, a system capable of reproducing a normal digital audio CD (hereinafter referred to as CD-DA) and a video CD will be described. Then, a method for allowing the user to prohibit unconditional reproduction of a specific disc in this system will be described. The description will be given in the following order. A. Recording / reproducing apparatus by mini-disc system 1) Configuration of recording / reproducing apparatus compatible with video / audio 2) Configuration of recording / reproducing apparatus compatible with audio only 3) Track structure in disc 4) P-TOC format in disc 5) U-TOC in disc Format 6) Audio data sector structure on the disk 7) Video data sector structure on the disk 8) Video data generation method 9) Track structure in which audio data and video data are mixed 10) Video data format 11) Recording / reproduction management method 12) Second 1 reproduction prohibition registration method 13) reproduction method corresponding to first reproduction prohibition registration method 14) second reproduction prohibition registration method 15) reproduction method corresponding to second reproduction prohibition registration method B. Reproduction device by CD system 16) Configuration of reproduction device 17) Track structure of CD-DA and video CD 18) Third reproduction prohibited registration method 19) Reproduction method corresponding to third reproduction prohibited registration method

A. Recording / reproducing device using mini disk system <1. Configuration of Recording / Reproducing Apparatus for Video / Audio> FIG. 1 shows the configuration of a recording / reproducing apparatus according to an embodiment. This makes it possible to record / reproduce even a moving image based on the mini disk format. In FIG. 1, reference numeral 1 denotes a magneto-optical disk on which audio data and video data are mixed (time-division multiplexed) and recorded, as will be described later, and is driven to rotate 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.

Therefore, 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 6a 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 6a are movable in the disk radial direction by the sled mechanism 5.

By the reproducing operation, the information detected from the magneto-optical disk 1 by the optical head 3 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.
Is written to. The reading of data (audio data and video data) from the magneto-optical disk 1 by the optical head 3 and the reproduction data transfer in the system from the optical head 3 to the buffer RAM 13 are performed at 1.41 Mbit / sec, for example.

The data written in the buffer RAM 13 is read at a timing at which the reproduction data is transferred, for example, at 0.3 Mbit / sec, and the audio data is supplied to the encoder / decoder unit 14 which performs audio compression / decompression processing. It Then, reproduction signal processing such as decoding processing for audio compression processing is performed, and the D / A converter 15 converts it into an analog audio signal, which is supplied from a terminal 16 to a predetermined amplification circuit section and reproduced and output. For example, it is output as L and R audio signals.

The video data is supplied to the image signal encoder / decoder section 21 by the memory controller 12. The encoder / decoder unit 21 is configured to be able to perform an encoding process and a decoding process according to the MPEG system, for example. Reference numeral 23 is a video RAM that holds video data during encoding processing and decoding processing, and 24 is a video signal generation unit.

The video signals (R, G, B video signals) decoded by the encoder / decoder unit 21 are D / A converters 2.
5, an analog signal is converted to an NTSC video signal (for example, NTSC composite video signal) by the converter 26, and the analog signal is output from the terminal 27.

Here, the data once written in the buffer RAM 13 and then read (the data will be described later in 1
(Writing / reading is executed in sector units)
The system decoder 22 can determine whether the sector data is audio data or video data based on the data content, and the read data is read by the encoder / decoder unit 14 and the encoder / decoder unit 21. It is determined which one should be supplied.

The address information output from the address decoder 10 and the subcode data used for the control operation are transmitted via the encoder / decoder unit 8 to the system controller 1
1 and is used for various control operations. further,
The lock detection signal of the PLL circuit that generates the bit clock for the recording / reproducing operation, the monitor signal of the missing state of the frame synchronization signal of the reproduction data, and the like 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 to control the output of the laser diode on / off, and at the time of on control, the laser It is possible to switch between a reproduction output having a relatively low power level and a recording output having a relatively high power level.

When a recording operation is performed on the magneto-optical disk 1, an audio signal (analog audio signal) to be recorded is supplied to the terminal 17. The video signal (NTSC composite video signal) is supplied to the terminal 28.

The analog audio signal supplied to the terminal 17 is converted into digital data by the A / D converter 18, and then supplied to the encoder / decoder section 14 for audio compression encoding processing. Encoder / decoder unit 1
The audio data compressed by 4 is once written in the buffer RAM 13 by the memory controller 12, read out at a predetermined timing, and sent to the encoder / decoder unit 8. Then, in the encoder / decoder section 8, C
After being subjected to encoding processing such as IRC encoding and EFM modulation, it is supplied to the magnetic head drive circuit 6.

The NTSC composite video signal supplied to the terminal 28 is converted into R, G,
After being converted into a B video signal and further converted into digital data by the A / D converter 30, it is supplied to the encoder / decoder unit 21 and subjected to an encoding process according to the MPEG system. That is, processing such as DCT conversion, requantization for bit number compression, and run length coding are executed.

The video data compression-encoded by the encoder / decoder section 21 is once written in the buffer RAM 13 by the memory controller 12, and is read at a predetermined timing and sent to the encoder / decoder section 8. Then, in the encoder / decoder section 8, C
After being subjected to encoding processing such as IRC encoding and EFM modulation, it is supplied to the magnetic head drive circuit 6. Audio data and video data are supplied to the magnetic head drive circuit 6 in a time division manner.

The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a according to the supplied recording data. That is, the magnetic head 6a applies an N or S magnetic field to the magneto-optical disk 1. Also,
At this time, the system controller 11 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 20 denotes a display section composed of, for example, a liquid crystal display. The operation input section 19 includes a record key, a play key, a stop key, an AMS key, a search key,
A numeric keypad is provided so that it can be operated by the user.

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), UT.
The OC (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 in response 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.

Further, the system controller 11 is a RAM
As 11a, a memory capable of storing personal identification registration data described later is installed. The RAM 11a is configured as, for example, a non-volatile memory and is configured to retain data as it is even when the power is turned off.
However, a non-volatile memory may be used as long as it has a data backup configuration. Further, it may be configured as a RAM external to the system controller 11.

<2. Structure of recording / reproducing apparatus for audio only> FIG. 2 shows the structure of a recording / reproducing apparatus as a mini disk system. In other words, recording / recording only audio data
This is a recording / reproducing device that performs a reproducing operation. In this case, the recording / reproducing apparatus of FIG. 1 has a configuration in which a circuit portion required for adding video data is removed, that is, an encoder /
Decoder unit 21, system decoder 22, video RAM
23, video signal generator 24, D / A converter 25, A /
D converter 30, converters 26 and 29, terminals 27 and 28
Is not provided. The operation for recording / reproducing audio data is almost the same as that of the recording / reproducing apparatus shown in FIG. The same applies to the point that a RAM 11a is provided to store secret code registration data, which will be described later.

<3. Track Structure in Disc> The track structure of the magneto-optical disc 1 in the mini disc system is as shown in FIG. That is, FIG. 3 (a) (b)
As described above, a cluster CL (= 36 sectors-) consisting of 4 sectors (1 sector = 2352 bytes) sub data area and 32 sectors (SC0 to SC31) main data area is continuously formed, and 1 cluster is formed. It is the minimum unit for recording and playback. This one cluster corresponds to two to three rounds of tracks. The address is recorded for each sector. The sub-sector area of 4 sectors is used as sub-data and linking area.
Data, audio data, video data, etc. are recorded in the main data area of 32 sectors.

The area of audio data recorded in each sector is further subdivided into sound groups, and two sectors are divided into 11 sound groups. The sector structure of the video data realized in this embodiment will be described later.

That is, in the case where the cluster whose sector is shown in FIG. 3B is used for recording audio data,
Even sectors in (b) (SC0, SC2, SC4
..) is configured as shown in FIG. 3C, and FIG.
Odd-numbered sectors (SC1, SC3, SC5 ...)
Is configured as shown in FIG. Each sector has a sync pattern (SYN
C), and a header in which the address is recorded is provided,
Then, a subheader is provided. Then, actual audio data is recorded following the subheader. A sound frame S of 212 bytes is recorded as audio data.
F is the minimum data unit, and 11 sound frames are included in each sector. One sound frame is L
Alternatively, it is data obtained by compressing an audio signal of 11.6 msec for the R channel.

Here, in the even-numbered sectors, the L-channel sound frame SF _(L0) , the R-channel sound frame SF _(R0) , the L-channel sound frame SF _(L1) ,. , R channels are recorded alternately, and sound frames S of L channel are recorded.
Up to F _(L5) is recorded. On the other hand, the odd-numbered sectors are recorded alternately with the R-channel sound frame SF _(R5) , the L-channel sound frame SF _(L6) , and the R-channel sound frame SF _(R6). Sound frames up to SF _(R10) are recorded.

Then, one sound group (SG0 to SG10) is constituted by the pair of L and R sound frames. Therefore, the first half of the sound groups SG0 to SG4 and the sound group SG5 are recorded in the even-numbered sector, and the second half of the sound group SG5 to the sound group 10 are recorded in the odd-numbered sector. Will be recorded.

<4. P-TOC Sector> Here, as the management information for managing the recording / reproducing operation of the audio data and the video data on the disc 1, 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 P-TOC format is shown in FIG.
FIG. 4 shows P-recorded repeatedly in an area for P-TOC (for example, ROM area on the innermost side of the disc).
One sector (sector 0) of TOC information is shown. Note that P-TOC is an option after sector 1 following sector 0.

The data area of the P-TOC sector (4 bytes x 588, 2352 bytes) has all 0s at the beginning position.
Alternatively, a sync pattern composed of all-byte 1-byte data is arranged, and subsequently, a 4-byte header including an address indicating a cluster address and a sector address is provided.

Further, an identification ID by an ASCII code corresponding to the character "MINI" is added at a predetermined address position following the header. Furthermore, the disc type, recording level, song number of the first song recorded (First TNO), song number of the last song (Last TNO), sector usage status (Used sectors), lead-out start address RO _A. , Power Cal Area Start Address PC
_A , U-TOC (U-TOC sector 0 of FIG. 5 described later
Data area), a start address UST _A , a recordable area (recordable user area) start address RST _{A, and the} like are recorded.

Next, 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 is prepared, which has 255 parts tables up to h). In the present specification, numerical values with "h" are so-called hexadecimal notation. In each of the parts tables, a start address as a starting point, an end address as an ending point, and mode information (track mode) of the part (track) can be recorded for a certain part.

The mode information of the track in each parts table records, for example, information as to whether the part is set to overwrite inhibition or data copy inhibition, whether it is audio information, monaural / stereo type, etc. Has been done.

In each part table from (01h) to (FFh) in the management table section, the contents of the part 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 music piece, 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, in the case of a hybrid type disc having both a ROM area and a magneto-optical area as areas where music and the like are recorded, the correspondence table instruction data section and the management table section are used to manage the music in the ROM area. .

<5. U-TOC sector> followed by UT
The OC will be explained. FIG. 5 shows the format of the first sector of the U-TOC (U-TOC sector 0), mainly regarding the music recorded by the user and the unrecorded area (free area) where new music can be recorded. It is a data area in which management information is recorded. Note that U
-TOC is also an option after sector 1 following sector 0. However, in the present embodiment, in order to realize the operation of the disk device shown in FIG. 1 capable of recording / reproducing not only audio but also video, a sector having a format similar to this U-TOC sector 0 (for example, UT
OC sector 6) is prepared.

The U-TOC sector 0 serves as management information for only audio data, and the recording / reproducing operation by the recording / reproducing apparatus of FIG. 2 and the recording / reproducing operation of only audio data by the recording / reproducing apparatus of FIG. 1 are performed. When the recording / reproducing apparatus of FIG. 1 performs the simultaneous recording / reproducing operation of the audio data and the video data, it is used as the management information when the recording / reproducing apparatus of FIG.

In the mini disk system, when trying to record a certain music on the disk 1, the system controller 11 searches the free area on the disk from the U-TOC, and records the audio data there. I am able to go. 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.

In the U-TOC sector (sector 0) shown in FIG. 5, a synchronization pattern and a header are provided first, similarly to the P-TOC, and then, at a predetermined address position, a maker code, a model code, and a first music piece. Song number (First TN
O), song number of the last song (LastTNO), sector usage
(Used sectors), Disk serial number, Disk I
Data such as D is recorded.

Each 1 according to the number of recorded tracks
In the byte area, the song number (First TNO) of the first song and the song number (Last TNO) of the last song are recorded. Usually, the song number (First TNO) of the first song is "01h". The song number (Last TNO) of the last song can be rewritten according to the number of recorded tracks. Of course, usually (First TN
O) ≤ (Last TNO).

Sector usage status of 1 byte (8 bits)
Each of the 1st to 8th bits of (Used sectors) is its MSB.
~ LSB corresponds to U-TOC sector 7 to U-TOC sector 0, and not only audio data but also video data is recorded on the disk 1.
When sector 6 is used, for example, this U-TOC
Used sectors in sector 0
The bit (second bit) corresponding to the U-TOC sector 6 is set to "1", and it is determined that the disc is a disc in which video data and audio data are mixed.

Further, in the U-TOC sector 0, the correspondence table instruction data is used to identify the areas of music recorded and recorded by the user by associating them with the management table section described later. Various table pointers (P-DFA, P-EMPTY, P-FRA, P-
Areas where TNO1 to P-TNO255) are recorded are 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. 4, the start address as a starting point, the end address as an ending point, and the mode information (track mode) of the part are recorded as in the P-TOC sector 0 of FIG. In the case of this U-TOC sector 0, since the parts shown in each parts table may be connected to other parts in succession, the parts table in which the start address and end address of the connected parts are recorded is displayed. The link information shown can be recorded.

In this type of recording / reproducing apparatus, for example, the data of one music piece is physically discontinuous, that is, a plurality of parts (here, a part is a track portion on which physically continuous data is recorded. ), The playback operation will not be hindered by playing while accessing between parts.Therefore, for songs etc. recorded by the user, multiple parts can be used for the purpose of efficient use of the recordable area. It may be recorded separately. Further, when the video data and the audio data are mixed, these are time-division multiplexed, so that, for example, the audio data of one song is divided into parts.

Therefore, link information is provided, for example, the numbers (01h) to (FFh) given to each parts table.
(Actually, the U-TOC sector 0
Indicated by the numerical value and the byte position in), the parts table can be linked by specifying the parts table to be linked. (In addition, since a music piece or the like pre-recorded on a premastered disc dedicated to audio data is not usually divided into parts, all the link information is “(00h)” in the P-TOC sector 0 as shown in FIG. It is said that.)

That is, in the management table section in the U-TOC sector 0, one part table represents one part, and, for example, a music piece formed by connecting three parts is linked by link information. The position of the parts 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 the part are shown as follows.

The table pointer P-DFA is shown attached to a defective area on the magneto-optical disk 1, and is a single part table or a plurality of parts tables in which a track portion (= part) which is a defective area due to a scratch or the like is shown. The top parts table in is specified. In other words, if there is a defective part, (01h) ~
Either (FFh) is recorded, and the defective parts are indicated by the start and end addresses in the corresponding parts table. If another defective part exists, another part table is designated as the 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 no link after that.

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 a free area (including an erasing area) in which data can be written on the magneto-optical disk 1. 1 or a track portion (= part) which is a free area is indicated. The first part table in multiple part tables is specified. That is,
Table pointer P-FRA when free area exists
In (01h) ~ (FFh) is recorded,
In the corresponding parts table, parts that are free areas are indicated by start and end addresses. Also, if there are multiple such parts, that is, if there are multiple parts tables, the link information
Part tables with link information of "(00h)" are specified in sequence.

FIG. 6 schematically shows the management state of the parts that are the free area by using the parts table. This is when the parts (03h) (18h) (1Fh) (2Bh) (E3h) are set as the free area, this state continues to the corresponding table instruction data P-FRA and the parts table (03h) (18h) (1Fh). It shows the state represented by the link (2Bh) (E3h). 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. The parts table that indicates the temporally first part of the parts is specified.

For example, when the first music piece is recorded on the disc without dividing tracks (that is, in one part), the recording area of the first music piece is the part indicated by the table pointer P-TNO1. It is recorded as the start and end addresses in the table.

If, for example, the second music piece is discretely recorded in a plurality of parts on the disc,
Each part is designated in chronological order to indicate the recording position of the music. That is, the table pointer P-TNO2
From the parts table specified in, the other parts tables are sequentially specified by the link information according to the temporal order, and the parts table in which the link information is “(00h)” is linked (same as above, FIG. 6). Form). 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 overwriting the area (1), the optical head 3 and the magnetic head 6 can be accessed to take out continuous music information from discrete parts, and recording can be performed efficiently using the recording area.

As the information on the track mode provided in each parts table, a predetermined state is indicated by each bit of the 1 byte. As the 8 bits of d1 to d8 that are the track mode data, for example, d2 is "0" or "1" to indicate the ON / OFF state of the copy protect. If d4 is "1", the part is identified as audio data. Furthermore, d7 is used for monaural / stereo discrimination, and d8 is used for emphasis information. In the second reproduction prohibition registration method, which will be described later, of the present embodiment corresponding to this mini disk system, the bit of d6 is used.

As described above, the area management on the disk is P
-TOC, and the free area and the like in which voice data such as music recorded in the recordable user area and voice data can be recorded are performed by the U-TOC. These TOC information are read into the buffer RAM 13 so that the system controller 11 can refer to them.

By the way, in the present embodiment, particularly in the case of a disc in which video data and audio data are mixed, in the U-TOC sector 0, the parts in which the video data are recorded are the recordable area or the reproduction area. It is not appropriate to manage as. Therefore, the parts in which the video data is recorded are invalid areas (for example, defect areas managed by linking from the table pointer P-DFA) or non-existing areas (table pointer P-FRA or P in the U-TOC sector 0). -TNO1 ~ P-
Areas that are not connected by any of TNO255) will be treated as. That is, depending on the U-TOC sector 0, the parts on which the video data is recorded cannot be recorded / reproduced. A specific management method for recording / reproducing audio data and video data will be described later, but this management is realized in the U-TOC sector 6. In this embodiment, the structure of the U-TOC sector 6 is the same as the structure of the U-TOC sector 0 shown in FIG.

<6. Audio Data Sector Structure on Disc> The format of the sector in which audio data is recorded is set as shown in FIG. This sector (23
52 bytes), the first 12 bytes are used as synchronization data, then 3 bytes are set for a cluster address and a sector address, and the following 1 byte is set as a mode and used as a header.

4 bytes following the header are set as a sub-header, and the byte following the sub-header, that is, the second sector of the sector.
2332 bytes from the 1st byte to the 2352nd byte are used as a data area (Data0 to Data2331). A sound frame of 212 bytes (see FIG. 3) is recorded in 11 units in this 2332 byte data area, so that a sound group of 5.5 units is recorded in one sector, and a sector address is an even number (address L
A sound group of 11 units is recorded in two sectors, an even sector whose SB is 0) and a next sector, that is, an odd sector whose sector address is odd (the LSB of the address is 1).

<7. Video Data Sector Structure on Disc> The format of a sector of video data which is time-division multiplexed with audio data and recorded is set as shown in FIG. Also in this sector (2352 bytes), the first 12 bytes are used as the synchronization data, then 3 bytes are set for the cluster address and the sector address, and the following 1 byte is set as the mode and is used as the header.

8 bytes following the header are used as a subheader, and the byte following the subheader, that is, the second sector of the sector.
The 2324 bytes from the 5th byte to the 2348th byte are the area of the video data (1 pack of video data) (PACK
-Data0 to PACK-Data2323). This 2324
In the byte data area, one frame of video signal compression-coded according to the MPEG system is recorded as one pack of video data. The last 4 in the sector
Bite is reserved.

Note that FIG. 9 is a simplified view so that the video data sector of FIG. 8 and the audio data sector of FIG. 7 can be compared.

<8. Video data generation method> where MP
Video data compressed and coded according to the EG method will be described. In this embodiment, the video signal before compression is the NTSC
Although this is a system, in the case of this NTSC system, 1 second is 3
It is composed of a video signal of 0 frame. According to the MPEG system, each video signal (1 frame) is divided into blocks in the plane direction (horizontal 22 blocks, vertical 15 blocks, 330 blocks), the data of each block is DCT-converted, and the number of bits is further increased. Requantization is performed to reduce the number (high frequency components are set to 0). Then, the blocks are rearranged in a zigzag manner from the block at the upper left of the screen of one frame, and run length coding is performed to further compress the number of bits.

Each frame of the video signal thus compressed is very similar to the video information in the frames preceding and succeeding in time, and this information is used to further compress the information. , Three types of video data with different compression levels (one frame of video data) are provided. These are I picture (Intra Picture), P picture (Predicated Picture), and B picture (Bidirecti).
onari Picture).

Then, for each of the 30 frames per second, generally, I pictures, P pictures, and B pictures are arranged as shown in FIG.
For example, in this case, frames at 1/2 second intervals are I pictures I ₁ and I _2, and eight P pictures P ₁ to
P ₈ and 20 B pictures B _{1 to} B ₂₀ are arranged as shown.

The I picture is regular image data encoded by the DCT conversion as described above. As shown in FIG. 10B, the P picture is generated by coding from the closest I picture or P picture using motion compensation. For example, P picture P ₁ is I picture I ₁
, And P picture P ₂ becomes P picture P ₁
Is generated using. Therefore, the P picture is more compressed than the I picture. Since the I-picture and the P-picture are sequentially generated, if an error occurs, the error propagates.

The B picture is generated by using both past and future I pictures or P pictures as shown in FIG. For example, B pictures B ₁ and B ₂ are generated using I picture I ₁ and P picture P ₁ ,
Pictures B ₃ and B ₄ are generated using P picture P ₁ and P picture P ₂ . The B picture is the most compressed data. Further, since it does not serve as a data generation reference, no error is propagated.

In the MPEG algorithm, it is allowed to select the position and synchronization of the I picture, and this selection is determined by the random access degree and scene cut. For example, if random access is emphasized,
Two I-pictures are required for at least 1 second like 0 (a). Furthermore, the frequency of P pictures and B pictures can also be selected, and this is set according to the memory capacity of the encoding means.

The encoding means in the MPEG system rearranges and outputs the video data stream so that the efficiency of the decoder is improved.
For example, in the case of FIG. 10A, the frame order to be displayed (decoder output order) is the same as the frame number shown in the lower part of FIG. 10A, but the B picture is recombined by the decoder. A P picture that becomes a reference earlier is needed. Therefore, on the encoder side, the frame order of FIG.
The rearrangement is performed as shown in (b) and this is transmitted as a video data stream.

<9. Track structure in which audio data and video data are mixed> In this embodiment, video data compressed in accordance with the MPEG system can be simultaneously recorded / played back together with audio data. Considering audio data of a music piece and video data as a video image corresponding to the music piece, the data structure of one music piece (track N) is as shown in FIG. FM is a front margin and RM is a rear margin, which are empty data areas of 15 sectors or more.

Video data as a video data stream and audio data as an audio data stream are shown in FIG.
As shown in FIG. 3, the data is multiplexed on the disc in a time division manner by the n: 1 interleaving and recorded on the disc. here,
V _MPEG indicates a data unit as video data, and _AMD indicates a data unit as audio data. These data units are, for example, at least 4 cluster lengths, and are interleaved with this as a minimum unit.

FIG. 13 shows the head portion of the track N in FIG. 12 in detail, but the front margin F
M is composed of empty sectors E of 15 sectors or more.
_Assuming that each video data unit V _MPEG has 4 clusters (144 sectors), the head sector of the video data unit V _{MPEG, which} is the head of the music, is the video data sector V _sh to which the system header is added. The normal video data sector V will be continuous. The video data sectors V _sh and V have the format described in FIG. Also, regarding each audio data unit A _MD , for example, _assuming that each is 4 clusters (144 sectors), each audio data unit A _MD has the above-mentioned FIG.
The voice data sector shown in (1) is arranged in 144 sectors.

<10. Video data format> Here, pack data of 2324 bytes in the video data sectors V _sh and V (PACK-Data0 to PACK-Data232 in FIG. 8).
The usage pattern of 3) will be described below. FIG. 14A shows the structure of the video data sector shown in FIG. 9 again, and the structure of one pack of the video data is shown in FIGS. 14B to 14E. . FIG. 14B shows pack data for the video data sector V _sh , which is the head sector of the music.

A 12-byte (PACK-Data0 to PACK-Data11) pack header is provided at the beginning of the pack data in the sector. The pack header is provided with a 4-byte pack start code, followed by a 5-byte system clock reference (SCR), and finally a 3-byte MUX rate.

System Clock Reference (SCR)
Is a code that means a kind of absolute time.
PTS (Presentation Time Stamp: image output start time) is determined based on R. This SCR is an SCR
(i) = C + i * 1200. i is the index number of the sector in the video data stream, which is set to "0" in the front front margin FM portion. C is a constant and is always "0". 1200 is 75Hz
Value at 90 KHz system clock in sector (90000/75
= 1200). The pack header is provided in all the sectors (V _sh , V) of the video data.

In the video data sector V _sh , 15 bytes (PACK-Data12 to PACK-Dat) following the pack header.
The system header of a26) is provided. Then, 2297 bytes (PACK-Data27 to PACK-D) following the system header
ata2323) is a padding packet normally filled with FFh. The 15-byte system header is configured as shown in FIG. First, a 4-byte system header start code is arranged, and then a 2-byte rate bound is provided. After that, 1 byte each, audio bound, fixed flag, CSPS flag,
The system audio lock flag, system video lock flag, video bound, stream ID, STD buffer bound scale, and STD buffer size bound are provided.

In the video data sector V following the video data sector V _sh as described above, FIG. 14 (c) (d) (e)
It is configured like. At least video data sector V
The video data sector V next to _sh is configured as shown in FIG. 14C, that is, a packet header of 18 bytes (PACK-Data12 to PACK-Data29) is provided following the pack header. 2294 bytes following the packet header (PACK
-Data30 to PACK-Data2323) are video packets,
Actual video data is recorded.

The packet header is constructed as shown in FIG. 16A, and the first 3 bytes are used as the packet start code. And 1-byte ID, 2-byte packet length,
1-byte STD buffer scale, 1-byte STD
A buffer size, a PTS of 5 bytes, and a DTS (decoding time stamp) of 5 bytes are recorded. The PTS which is the image output start time is set so as to be synchronized with the audio data. Further, DTS indicates the decoding start time.

In the first image data sector V,
As shown in FIG. 14C, the maximum size of the video packet is 2294 bytes. However, in the following sectors, the STD buffer scale, STD buffer size, PTS, and DTS in the packet header can be omitted, and the packet header is shown in It can be 6 bytes as in b). In this case, the structure of one pack is as shown in FIG. 14D, and the video packet is expanded to 2306 bytes.
As for the last video data sector V in one song (track N), a 4-byte end code is recorded at the end of the sector, as shown in FIG.

<11. Recording / reproducing management system> In this embodiment, the video data configured as described above is recorded / reproduced on the disc 1 together with the audio data in the original mini-disc system. The management method for this will be described.

Now, it is assumed that audio data of a certain music piece (for example, track 1) and video data corresponding thereto are recorded on the disc 1 as shown in FIG. That is, the audio data of a certain music piece is divided into parts of A _{MD1 to} A _{MD (n)} , and is recorded by being interleaved with the video data V _MPEG . For example, each part of A _{MD1 to} A _{MD (n)} has an audio data amount corresponding to, for example, about 8 seconds, and 4 to 6 units of video data (V _MPEG ) located between the audio data parts. Also, the amount of video data is about 8 seconds. Here, Ad _{1 to} Ad _(N) indicate addresses on the disk 1.

As described above, in the U-TOC sector 0, only the audio data part is managed in such data. However, since the video data is mixed and the simultaneous recording / playback of the video data and the audio data is managed by the U-TOC sector 6, for example, the sector usage status (Used) in the U-TOC sector 0 is shown. U-TOC sector 6 in
The second bit which is the information of "1" is set to "1".

In the U-TOC sector 0, in order to manage the first music piece, a link structure as shown in FIG. 18, for example, is formed following the table pointer P-TNO1. For example, if the table pointer P-TNO1 points to the parts table "02h", the parts table (02h) is used for management of the voice data part A _MD1 , that is, the start address is Ad ₃ and the end address is Ad _4. As the link information, for example, the parts table (0
3h) is recorded. Linked parts table (0
3h) will be used for the management of the voice data part A _MD2 , ie the start address is Ad ₇ ,
The end address is recorded as Ad _8, and, for example, a parts table (04h) is recorded as link information.

Further linked parts table (04
h) will be used for management of audio data part A _MD3 , the start address is recorded as Ad ₁₁ , the end address is recorded as Ad _12, and the link information of the parts table for managing the audio data part (A _MD4 ) is continued. Is recorded.

The above link form is the voice data part A.
A parts table (for example, a parts table (0Eh)) for _{MD (n) is} configured, and a parts table (0Eh)
In h), the start address is recorded as Ad _(N-1) and the end address is recorded as Ad _(N), and the link information is set to "00h" indicating that there is no link thereafter.

Further, in this U-TOC sector 0, the portion in which the video data is recorded must be neither a song nor a newly recordable free area. As shown in FIG. 19, the table pointer P-
It will be managed by the link structure from DFA.

For example, if the table pointer P-DFA points to the parts table "10h", the parts table (10h) is the video data parts (V _{MPEG1 to} V _MPEG1 ).
_MPEG6 ) is shown as a defect area, that is, the start address is Ad ₁ and the end address is Ad _2, and the link information is, for example, a parts table (11).
h) is recorded.

The linked parts table (11h) is
Video data parts (V_MPEG7 ~ V_{MP EG10}) Defect
It will be used for management that is regarded as
Mari Start Address is Ad_Five , The end address is Ad
₆ Is recorded as link information such as a parts table
(15h) is recorded.

Further linked parts table (15
h) will be used for management in which the video data parts (V _{MPEG11 to} V _MPEG14 ) are regarded as defect areas.
The start address is recorded as Ad ₉ and the end address is recorded as Ad _10, and the video data parts (V _MPEG15- ) continue.
The link information of the parts table that manages as a defect area is recorded.

In the above-mentioned link form, the parts table (for example, the parts table (1F) for the video data parts (V _{MPEG (m-3) to} V _{MPEG (m)} ) is used in this music.
h)), the start address is Ad _(N-3) and the end address is Ad in the parts table (1Fh).
Recorded as _(N-2) . Incidentally, here, the link information is recorded as link information to a parts table for managing the next video data part so that the video data parts for other music pieces are also regarded as the defect area. In addition,
Of course, if only one song is recorded and there is no actual defect area, the link information of the parts table (1Fh) is "00h" indicating no link.
It is said.

In the U-TOC sector 0, the audio data parts are managed as music in this way, while the video data parts are regarded as scratched areas and are managed as areas that cannot be recorded / reproduced.

On the other hand, in the U-TOC sector 6 which has the same structure as the U-TOC sector 0, parts management is performed so that video and audio may be output simultaneously.
In this case, the division of the parts is not carried out between the video data portion V _MPEG and audio data portion A _MD, for example, V _MPEG1
Up to _{AMD (n)} are regarded as one part. (Note that
If this track is divided in the middle and recorded at physically separated positions, it will be managed as two or more parts by two or more parts tables.)

Then, in order to manage the data of the first music piece in the U-TOC sector 6, this part is shown following the table pointer P-TNO1 as shown in FIG. 20, for example. For example, if the table pointer P-TNO1 points to the parts table "02h", the parts table (0
In 2h), the start address is Ad ₁ and the end address is Ad _(N), and if this track (first song) is physically continuously recorded on the disc 1, the link information is “00h”. Is recorded as. Also, this U
-Table pointer P-FRA in TOC sector 6
From this, an area in which data (video data or audio data) is not actually recorded is managed as a free area.

As described above, since the recorded audio and video data are managed in the U-TOC sector 0 and the U-TOC sector 6, such a disc 1 is the same as the recording / reproducing apparatus of FIG. Compatibility is obtained between the two recording / reproducing devices. That is, in the recording / reproducing apparatus of FIG. 2, which is a recording / reproducing device for only audio data, by performing a reproducing operation using the U-TOC sector 0, reproduction and output of only audio can be executed, and recording of video data is possible. Managed area as free area (table pointer P-FR
Since it is not managed by A) and is regarded as a recording / playback impossible area as a defect area, the video data will not be erased by the recording operation of the audio data. Of course, in the case of a disc in which only audio data is recorded, it goes without saying that normal recording / reproduction can be executed by the U-TOC sector 0.

In the recording / reproducing apparatus shown in FIG. 1, which is compatible with both audio and video, the U-T
Used sector in OC sector 0 (Used sector
If the information (second bit = 1) that the U-TOC sector 6 is used is recorded when s) is confirmed, it can be determined that the disc 1 also has video data recorded, In this case, referring to the U-TOC sector 6, video data (V _MPEG ) and audio data (A _MD )
Can be reproduced and scanned as it is.

At this time, whether the data read from the disc is video data or audio data is determined by the system decoder 22 as described above, and the encoder / decoder unit 14 and the encoder 14 are controlled by the system decoder 22. By synchronizing control of decoding output in the / decoder section 21, video and audio can be reproduced and output simultaneously. Therefore, by using the mini disk system, it becomes possible to use the karaoke with images and the same video equipment as the laser recording / reproducing apparatus and the VTR apparatus. When recording video data and audio data, a free area is searched for from the table pointer P-FRA in the U-TOC sector 6, and a track (song, etc.) of the form shown in FIG. 17 is recorded. Become.

Further, in the recording / reproducing apparatus of FIG. 1, when the second bit in the sector used status (Used sectors) in the U-TOC sector 0 is "0", the U-TOC sector
Since the sector 6 is not used, that is, the video data does not exist, it is possible to record / reproduce the audio data using the U-TOC sector 0 as it is. Furthermore, even if the disc contains video data, U-
Recording / playback of only audio data using TOC sector 0 may be performed.

By the way, in this embodiment, the video data parts in the U-TOC sector 0 are regarded as defect areas and managed, but they may be parts that do not appear on the management table at all. That is, a part which is not indicated by any of the part tables linked from the table pointers P-FRA, P-DFA, P-TNO1 to P-TNO255, and an area which does not exist on the disc in the U-TOC sector 0. It is something to consider.

It should be noted that it is not limited to the U-TOC sector 6 that is used to manage the simultaneous recording / reproduction of video and audio, but it may be another sector in the U-TOC. Further, when such a disc in which video data and audio data are mixed is created as a premastered for reproduction only, in the P-TOC sector 0, the above-mentioned U-
Only audio data such as TOC sector 0 is managed, and in the other sectors in the P-TOC, the above-mentioned U
-Management such as the TOC sector 6 may be performed.

Furthermore, the present invention can also be applied to a hybrid type having an area where data is stored in ROM and a magneto-optical area where data can be recorded and reproduced. For example, ROM data can be used in P-TOC sector 0 and P-TOC sector 6. Again, U-TOC sector 0 and U-TOC sector 6
With respect to magneto-optical data, audio data and audio and video data may be managed in the same manner as above.

Further, although the recording / reproducing apparatus is the recording / reproducing apparatus in the embodiment, it may be realized as a reproducing-only apparatus or a recording-only apparatus.

In the above description, the system in which the video data to be recorded and reproduced simultaneously is added to the audio data has been described. However, the present invention is applied to the L and R audio data, for example, the center data. , Realize a system for recording and reproducing by adding rear 2 channels of audio data, and when adding video data, record and reproduce still images instead of moving images, for example simultaneous audio reproduction It can also be a system such as a still camera, in which

<12. First reproduction prohibition registration method> Reproduction prohibition registration that can be realized in the recording / reproducing apparatus of the type of FIG. 1 corresponding to the audio / video mixed disc and the recording / reproducing apparatus of the type of FIG. 2 corresponding to the audio data as described above. The method will be described. Two reproduction prohibition registration methods will be given here, and the first reproduction prohibition registration method will be described first.

The two types of methods described below are not limited to the audio / video mixed disk (mixed compatible disk) using the U-TOC sectors 0 and 6 described above.
A disc on which only audio data is recorded (audio disc)
Moreover, even a mixed audio / video disc that does not have the above compatibility (mixed incompatibility disc) can be realized.

The mixed compatibility disc is designed so that only the audio data can be reproduced by the U-TOC sector 0 recorded in the lead-in area as described above, and the U-TOC sector also recorded in the lead-in area. 6 is managed so that audio and video data can be reproduced simultaneously. In the audio disc, all the sectors of the main data area are recorded with data in the formats described in FIGS. 3C and 7D, and the management is performed by the U-TOC sector 0 and the U-TOC sector 6. Is not used. Although the mixed incompatible disc is not mentioned in the above description, it is a mixed audio / video disc and is not compatible with the audio recording / reproducing apparatus of FIG. is there. That is, data is recorded on each track as described with reference to FIGS. 12 and 13, and these data are managed so that audio and video data are simultaneously reproduced in the U-TOC sector 0. However, reproduction of only audio data is not managed. These three types of discs (that is, a mixed compatibility disc, an audio disc, and a mixed incompatibility disc) will be considered and collectively described.

The first reproduction prohibition registration method is performed by using the data of the first track number (First TNO) and the last track number (Last TNO) in the U-TOC sector 0 shown in FIG. is there. A user who uses the recording / reproducing apparatus shown in FIG. 1 or FIG. 2 performs a password registration operation when a certain disc is loaded, and thereafter, if the registered personal identification number is not input, the disc is reproduced. You can prevent it. FIG. 21 shows the processing of the system controller 11 relating to the secret code registration operation.

When the disc 1 is loaded, the system controller 11 starts the P-TOC and the U-TO from the disc 1.
The C data is read and the recording / reproducing operation can be executed. In this state, when the user performs a password registration operation, the system controller 11 executes step F1 in FIG.
You will proceed from 01 to F102.

Then, for the U-TOC read in the buffer RAM 13, the first track number (Fir
st TNO) data to the last track number (Last TNO)
Rewrite to the value of + α. The value of α need only be a value of “01h” or more, that is, the first track number (First T
The value of (NO) is set to be larger than the value of the last track number (Last TNO).

(First TNO)> (Last TNO)
This is a normally impossible state, that is, in this embodiment, (Fir
st TNO)> (Last TNO)
It is assumed that by writing in the C sector 0, the disc is registered as a reproduction prohibition that cannot be reproduced unconditionally. In addition, in the case of the above-mentioned mixed compatibility disc, UT
Not only the OC sector 0 but also the sector 6 is rewritten.

In this step F102, after rewriting the U-TOC sector 0 in the buffer RAM 13 in this way,
The U-TOC data is written to the disc 1, so that the disc 1 is recorded with a value of (First TNO)> (Last TNO). The U-TOC data may be rewritten on the disc 1 when the disc is ejected or the power is turned off.

Subsequently, in step F103, it is determined whether or not the personal identification number is already registered in the nonvolatile RAM 11a in the system controller 11. If the secret code registration operation by the processing of FIG. 21 has been performed once or more before, the user has input the secret code number at that time.
The personal identification number is already stored in the RAM 11a. Therefore, when it is determined in step F103 that the personal identification number is not registered, it means that the personal identification registration operation is performed for the first time in the recording / reproducing apparatus, or for some reason the RAM 11
Only when the data in a is lost.

If the personal identification number is not registered, the system controller 11 prompts the user to enter the personal identification number. For example, the display unit 20 displays that effect. Then, it waits for the user's input using the ten keys or the like on the operation unit 19 (F105). Then, when the input is executed, RA is used as the registered personal identification number.
It is stored in M11a (F106).

Then, the display section 20 displays a message indicating the completion of the password registration operation, and the process is terminated (F107).
If it is determined in step F103 that the personal identification number has been registered, the process directly proceeds to step F107, a display indicating the completion of execution of the personal identification registration operation is displayed on the display unit 20, and the process ends.

Further, the user can cancel the registration of a disc which has been once registered for reproduction prohibition. For example, if the password is forgotten, it can be reproduced by canceling the registration. When the password registration cancel operation is performed, the process proceeds from step F108 to F109. Here, in the U-TOC sector 0 (in the case of the mixed compatibility disc, sector 0 and sector 6) read from the currently loaded disc, data such that (First TNO)> (Last TNO) is recorded. Determine if

If (First TNO)> (Last TNO), it means that the disc is not registered for reproduction prohibition, and the process is terminated. (First TNO) ＞ (Last TN
If it is O), the value of the first track number (First TNO) is rewritten to "01h" (F110). And the buffer RA
After performing this processing in M13, the U-TOC data on the disk 1 is rewritten at a predetermined timing.

The first track number (First TNO) is set to "0.
By rewriting to "1h", the original state is restored, that is, the reproduction prohibition registration is canceled for the disc. Then, the cancel execution is displayed on the display unit 20 and the process ends (F111).

<13. Reproduction method corresponding to the first reproduction prohibition registration method> Corresponding to the reproduction prohibition registration as shown in FIG. 21, the system controller 11 in the recording / reproducing apparatus shown in FIG. 1 or FIG.
Will be performed.

When a disc 1 is loaded (F201), first, P-TOC and U-TOC data is read from the disc 1 to enable the recording / reproducing operation (F20).
2). Here, in U-TOC sector 0 (sector 0 and sector 6 in the case of a mixed compatibility disk), (Fir
It is determined whether or not data satisfying st TNO)> (Last TNO) is recorded (F203).

If (First TNO)> (Last TNO) is not satisfied, the reproduction prohibition registration is not performed for the disc 1, so that the process proceeds to step F206 to turn on the reproduction possible mode. If (First TNO)> (Last TNO), it means that the disc 1 is registered for reproduction prohibition. For this reason, a display prompting the user to enter the personal identification number is displayed.
(F204). Here, when the user inputs the personal identification number, the input personal identification number is compared with the registered personal identification number stored in the RAM 11a (F205). If they match, the process proceeds to step F206 to turn on the reproducible mode. However, if the entered security code does not match the registered security code, or if the security code has not been entered even after the specified time has elapsed, or if the playback operation has been performed without the security code being input. Then, the process proceeds to step F207, and the reproduction prohibit mode is turned on.

When the user performs a reproducing operation after the above processing is performed when the disc is loaded, the system controller 11 executes the processing shown in FIG. When the reproduction operation is performed (F301), first, the system controller 11 confirms whether the reproduction prohibited mode is turned on or the reproducible mode is turned on (F302).

If the reproducible mode is turned on, control for starting the regenerating operation is performed (F303). On the other hand, if the playback prohibit mode is turned on, the playback operation performed by the user is ignored and playback is not started (F304).
The display unit 20 displays that the disc is registered for reproduction prohibition and finishes the process (F305).

By performing the processing of FIGS. 21 to 23 as described above, the user can conceal the contents of the specific disc by the secret code so that the contents cannot be reproduced by others. For example, it is suitable as a means for preventing an adult's video / audio recorded disc from being seen by children at home. Also,
If the password is forgotten, the password registration cancel operation may be performed as described above. If another person performs a password registration cancel operation, the disc will be reproduced by another person. However, in that case, the registered person, when loading the disc, carries out step F204.
The fact that someone has canceled the registration can be known by not requesting to input the PIN.

<14. Second reproduction prohibition registration method> Next, the second reproduction prohibition registration method will be described. In the first reproduction prohibition registration method, the reproduction prohibition registration is performed for each disc, but in the second reproduction prohibition registration method, the reproduction prohibition registration is performed for each track recorded in the disc. Is something that can be done.

The second reproduction prohibition registration method is performed by using the data d6 of the sixth bit in the track mode of each parts table in the U-TOC sector 0 shown in FIG. If available, d
Bits other than 6 may be used.

Also in this case, the user who uses the recording / reproducing apparatus of FIG. 1 or FIG.
By performing the password registration operation, it is possible to prevent the disc from being reproduced until the registered password is input. FIG. 24 shows the processing of the system controller 11 relating to the secret code registration operation.

When the disc 1 is loaded, the system controller 11 reads the P-TOC and U-TO from the disc 1.
The C data is read and the recording / reproducing operation can be executed. In this state, when the user performs a password registration operation, the system controller 11 causes the system controller 11 to perform step F4 in FIG.
You will proceed from 01 to F402.

Here, the user can perform an operation of designating one or a plurality of tracks before or after the password registration operation. In step F402, it is determined whether or not a track is designated by this operation. If the track is designated, the process proceeds to step F403, and the UT read in the buffer RAM 13 is read.
For OC, the track mode data of the parts table in which the parts for the specified one or more tracks x are shown is rewritten. That is, the data d6 is "1".
And On the other hand, if no track has been designated, it is considered that playback is prohibited for all tracks, and the track mode data in the parts table is rewritten for all tracks in step F404. That is, the data d6 is set to "1".

That is, in this embodiment, d in the track mode is used.
If 6 is "1", it is assumed that the reproduction prohibition is designated for the track. In the case of the above-described mixed compatibility disc, not only the U-TOC sector 0 but also the sector 6 is rewritten. In steps F403 and F404, U-
After rewriting the TOC sector 0, the U-TOC data is written to the disc 1 at a predetermined timing.

Subsequently, in step F405, it is determined whether or not the personal identification number is already registered in the nonvolatile RAM 11a in the system controller 11. The processing of steps F405 to F408 is the same as the processing of steps F103 to F106 of FIG. 21 in the above-described first reproduction prohibition registration method.
That is, if the personal identification number is not yet stored in the RAM 11a, this is a process of registering the personal identification number, and detailed description thereof will be omitted. Then, the display unit 20 displays a message indicating that the password registration operation has been completed, and the processing is terminated (F409).

Also in this case, the user can cancel the registration of the disc which has been once registered for reproduction prohibition. When the password registration cancel operation is performed, the process proceeds from step F410 to step F411. The user can specify the track even when the password registration cancel operation is performed. When it is desired to cancel the reproduction prohibition registration of only a specific track among the plurality of reproduction prohibition registered tracks, the user performs a track designation operation.

If this track is designated, the process proceeds from step F411 to F412, and in the U-TOC sector 0 (sector 0 and sector 6 in the case of the mixed compatibility disc) read from the currently loaded disc. Check the parts table corresponding to the specified track x,
It is determined whether or not the data d6 in the track mode is "1".

If d6 = 1 is not satisfied, the track is not registered for reproduction prohibition, and therefore the process is terminated. If d6 = 1, rewrite to d6 = 0
(F413). Then, after performing this processing in the buffer RAM 13, the U-TOC on the disk 1 is carried out at a predetermined timing.
Rewrite the data. This cancels the reproduction prohibition registration for that track.

If no track is designated at the time of the cancel operation, it is judged that the cancel operation of the reproduction prohibition registration is performed for all the tracks, and step F411 is performed.
To F414. Then, the parts table corresponding to all the tracks in the U-TOC sector 0 (sector 0 and sector 6 in the case of the mixed compatibility disk) read from the currently loaded disk is confirmed, and the track mode data d6 Is "1" or whether or not there is a parts table. If it does not exist, the reproduction prohibition registration has not been made for all the tracks, so that the processing is ended.

If it exists, the data d6 which is "1".
Is rewritten to "0" (F415). And the buffer RAM
After performing this processing in 13, the U-TOC data on the disk 1 is rewritten at a predetermined timing. As a result, the reproduction prohibition registration for all tracks is canceled. When the above cancel operation is executed, the display unit 2
At 0, the cancellation execution is displayed and the processing is terminated (F416).

<15. Reproduction method corresponding to the second reproduction prohibition registration method> Corresponding to the reproduction prohibition registration as shown in FIG. 24, the system controller 11 in the recording / reproducing apparatus of FIG. 1 or FIG.
Will be performed.

When a disc 1 is loaded (F501), first, P-TOC and U-TOC data is read from the disc 1 to enable the recording / reproducing operation (F50).
2). Here, in the U-TOC sector 0 (sector 0 and sector 6 in the case of the mixed compatibility disk), it is determined whether or not there is a track in which the track mode data d6 = “1” exists (F503).

If there is no track with the data d6 = "1", all tracks on the disc 1 have not been registered for reproduction prohibition.
Proceed to F507 to turn on the playable mode. Data d6
If there is a track of "1", it means that there is a track for which reproduction prohibition is registered on the disc 1. Therefore, a display prompting the user to enter the personal identification number is displayed (F504).

Here, when the user inputs the personal identification number, the input personal identification number is compared with the registered personal identification number stored in the RAM 11a (F505).
Proceed to F506 to turn on the playable mode. However, if the entered PIN does not match the registered PIN,
Alternatively, if the personal identification number has not been input even after a predetermined time has elapsed, or if the reproduction operation has been performed without inputting the personal identification number, the flow proceeds to step F507, and the reproduction prohibition mode is turned on.

When the user performs a reproducing operation after the above processing is performed when the disc is loaded, the system controller 11 executes the processing shown in FIG. When the reproduction operation is performed (F601), the system controller 11 first confirms whether the reproduction prohibited mode is turned on or the reproducible mode is turned on (F602). If the reproducible mode is turned on, control is performed to start the regenerating operation as it is (F603).

On the other hand, if the reproduction prohibit mode has been turned on, the flow advances to step F604 to check whether or not there is reproduction prohibit registration for each track. That is, at the time of starting the reproduction operation and when the track is changed during the reproduction, that is, when the reproduction of a certain track is about to be started, step F6
Go to 05 and press d6 in track mode for that track
To confirm.

If d6 = 0, the track is not registered for reproduction prohibition, and therefore the process proceeds to step F607, and the track is reproduced normally. When the reproduction of the track ends and the reproduction of the next track is started, the process again proceeds from step F604 to F605, and d6 of the track mode is confirmed for the track.

If d6 = 1, the next track is immediately accessed without reproducing that track (F608). By repeating the processing from step F604, the track for which reproduction prohibition is registered is skipped at the time of reproduction, and a user who does not know the personal identification number cannot reproduce it.

By performing the processing of FIGS. 24 to 26 as described above, the user keeps the contents of the specific disc or the specific track of the specific disc secret by the secret code so that it cannot be reproduced by others. You will be able to. Further, if the personal identification number is forgotten, the personal identification registration may be canceled. Also in this case, if another person performs the password registration cancel operation, the registered person is required to carry out step F504 when the disc is loaded.
It is possible to know that someone has canceled the registration by not requesting the input of the personal identification number.

B. CD system playback device <16. Structure of Reproducing Device> In the embodiment described above, the magneto-optical disk is used as the recording medium, and the user can register the reproduction prohibition for the video / audio recorded by himself / herself. Disc or CD-DA (normal digital audio C
D), an embodiment in which reproduction prohibition registration can be performed for a video CD will be described. Even in the recording / reproducing apparatus shown in FIGS. 1 and 2, the R is called a premastered disc.
Although it is possible to reproduce the OM disc, the reproduction prohibition registration method for the disc may be the method of the embodiment described below.

In FIG. 27, as a reproducing apparatus according to the embodiment, C
The structure of a reproducing apparatus capable of reproducing a D-DA and a video CD is shown. In FIG. 27, reference numeral 51 denotes an optical disk of either a CD-DA in which audio data is recorded or a video CD in which audio data and video data are mixed (time division multiplexed) and recorded, and is driven to rotate by a spindle motor 52. It An optical head 53 irradiates the optical disc 1 with laser light during reproduction.

The optical head 53 is equipped with a laser diode as a laser output means, an optical system including a deflecting beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 53a is a biaxial mechanism 5
It is held by 4 so as to be displaceable in the radial direction of the disc and in the direction of approaching and separating from the disc. Reference numeral 55 denotes a sled mechanism for driving the optical head 53 in the disk radial direction.

The information detected from the optical disk 51 by the optical head 53 by the reproducing operation is supplied to the RF amplifier 56. The RF amplifier 56 extracts a reproduction RF signal, a tracking error signal, a focus error signal, etc. by processing the supplied information. Then, the extracted reproduction RF signal is supplied to the decoder unit 58 and EFM demodulated,
Error correction is performed.

Further, the tracking error signal and the focus error signal are supplied to the servo circuit 57. The servo circuit 57 supplies the supplied tracking error signal, focus error signal, track jump command, seek command, and spindle motor 52 from the system controller 61.
Various servo drive signals are generated based on the rotation speed detection information of the above, and the biaxial mechanism 54 and the sled mechanism 55 are controlled to perform focus and tracking control, and the spindle motor 52 is controlled to a constant linear velocity (CLV).

Reference numeral 60 is a video CD decoder, and 62 is a switch section which can be switched according to the type of optical disk.
When the disc 51 is a CD-DA, the reproduced signal is subjected to EFM demodulation, decoding processing such as CIRC, etc. in the decoder section 58 to obtain a digital audio signal. When the loaded disc 51 is a CD-DA, the system controller 61 switches the switch unit 62.
Is connected to the t ₁ terminal. Therefore, the digital audio signal from the decoder unit 58 is converted into an analog audio signal by the D / A converter 63, and the audio output terminal 6
4 is output to an external device such as an amplifier circuit or an amplifier in the subsequent stage.

If the disk 51 is a video CD, the digital data decoded by the EFM demodulation, CIRC, etc. in the decoder section 58 is the video CD decoder 6.
At 0, decoding processing of the MPEG system is performed. On the video CD, audio data and video data are recorded as described with reference to FIGS. Video CD decoder 6
At 0, audio data decoding and video data decoding are performed on the data of such a signal format, and a digital audio signal and an RGB video signal are output.

The digital audio signal output from the video CD decoder 60 is supplied to the t ₂ terminal of the switch section 62. When the loaded disc 51 is a video CD, the system controller 61 connects the switch unit 62 to the t ₂ terminal. Therefore, the digital audio signal output from the video CD decoder 60 is converted into an analog audio signal by the D / A converter 63, output from the audio output terminal 64 to an external device such as an amplifier circuit or an amplifier in the subsequent stage, and output from the speaker. Is output as.

The RGB video signal output from the video CD decoder 60 is converted into an analog R signal by the D / A converter 65.
Converted to GB signal, RGB / NTSC converter 66
Is supplied to. R in the RGB / NTSC converter 66
The GB signal is converted into an NTSC composite video signal and supplied to the video output terminal 67. Then, it is supplied to the monitor device or the like from the video output terminal 67, and the video output is executed.

Reference numeral 68 denotes an operation input section provided with keys used for user operation, and 69 denotes a display section constituted by a liquid crystal display, for example. The operation input section 69 is provided with a reproduction key, a stop key, an AMS key, a search key, a ten-key for inputting a personal identification number, and the like so as to be operated by the user.

When the reproducing operation is performed from the disc 51, the management information recorded on the disc 51, that is, the TOC and the subcode data, is read out and supplied to the system controller 61. System controller 61
Performs reproduction operation, access, reproduction time display, etc. according to the management information.

Further, the system controller 61 is a RAM
A memory capable of storing personal identification registration data is installed as 61a. The RAM 11a is configured as, for example, a non-volatile memory and is configured to retain data as it is even when the power is turned off. However, a non-volatile memory may be used as long as it has a data backup configuration. Further, it may be configured as a RAM external to the system controller 61.

<17. Track structure of CD-DA and video CD> Track structure of CD-DA is shown in FIG. That is, the lead-in area is provided on the innermost side of the disc, and the TOC data is recorded therein. T
As the OC data, the start position of each track, the number of tracks, the playing time, etc. are recorded. Following the lead-in area, track data is recorded as tracks 1 to n, and a lead-out area is provided at the outermost peripheral position.

The track structure of the video CD is shown in FIG. 28 (b).
Shown in. The track structure of the video CD is almost the same as that of the CD-DA, but the track 1 is not used for recording actual video or audio data as the first track, but is used as the video CD data track. .

On the video CD data track, as shown in the figure, PVD (basic volume descriptor), karaoke basic information area, video CD information area, segment play item area,
A CD-I application area is prepared.

The structure of PVD (basic volume descriptor) is as shown in FIG. A disc information area is always provided as the video CD information area. Further, as an option, an entry table, a list ID offset, and a play sequence descriptor are provided. The disc information area in the video CD information area has a structure as shown in FIG.

Although detailed description of each data in FIGS. 29 and 30 is omitted, there is data uniquely attached to each disk. In the PVD shown in FIG. 29, the album recognizer written from byte position 191 to 128 bytes corresponds to this, and in the disc information shown in FIG. 30, byte position 1
The disc ID described in 16 bytes of 1 to 26 corresponds to this. In this embodiment, with respect to the video CD, the reproduction prohibition registration is performed using the data uniquely attached to each of these discs.

In FIG. 28B, actual video / audio data is recorded on tracks 2 to n. That is, FIG.
~ Video data of I picture, P picture, and B picture in the format described in FIG. 16,
The compressed audio data is recorded. Further, in the case of a video CD, it is possible to provide a track in which only audio data is recorded, and in that case, 16-bit audio data similar to CD-DA is recorded without being compressed.

<18. Third reproduction prohibition registration method> A third reproduction prohibition registration method as an embodiment which can be realized in the reproduction apparatus of FIG. 27 corresponding to the above CD-DA and video CD will be described. As the reproduction prohibition registration method, the disk ID described in the disk information shown in FIG. 30 is used for the video CD,
For the CD-DA, a so-called custom file unique to the disc is generated by using a part of the TOC data, and this custom file is used.

A user who uses the reproducing apparatus shown in FIG.
By performing a secret code registration operation when a certain disc is loaded, it is possible to prevent the disc from being reproduced until the registered secret code number is input. System controller 6 for this password registration operation
The processing of No. 1 is shown in FIG.

When the disc 1 is loaded, the system controller 61 reads the TOC data from the disc 51 and enables the recording / reproducing operation. At this time, if it is determined that the disk 51 is a CD-ROM, the data of the PVD position in the area of track 1 is read and the video C is read by the PVD data of FIG.
It will be determined whether or not it is D.

In this state, when the user performs the password registration operation, the system controller 61 proceeds from step F701 to F702 in FIG. If the disc 51 is a video CD, the byte positions 11 to 26 of the disc information shown in FIG.
The disk ID recorded on the disk is stored in the RAM 61a. As will be described with reference to FIG. 32, since the disc ID is captured as a process when the video CD is loaded, it is stored.

On the other hand, if the disk 51 is a CD-DA, the custom file generated from the read TOC data is stored in the RAM 61a (F704). In addition,
This will also be described with reference to FIG. 32. Since a custom file is generated from TOC data as a process when the CD-DA is loaded, the generated custom file is stored in the RAM 61a in step F704.

The custom file is data generated by extracting a part of the TOC data, or data generated by subjecting a part of the TOC data to a predetermined calculation process. The start position and time information of each track in the TOC, and the data of the number of tracks are the CD
-It is unique data for DA. In other words, it can be considered that these pieces of data do not match in different CD-DA software. Therefore, these TO
Extract a part of C data according to a predetermined rule, combine it,
The custom file generated by performing the calculation or the like can be unique information about the CD-DA.
As an example, the custom file is generated by combining the data of the total playing time, the total number of tracks, and the playing time of the first track, or the playing process of the three data.

Subsequently, in step F705, it is determined whether or not the personal identification number is already registered in the nonvolatile RAM 61a in the system controller 61. The processing of steps F705 to F708 is the same as the processing of steps F103 to F106 of FIG. 21 in the embodiment of the first reproduction prohibition registration method described above. That is, if the personal identification number is not yet stored in the RAM 61a, this is a process of registering the personal identification number, and detailed description thereof will be omitted. After that, the display unit 69 displays a message indicating that the password registration operation has been completed, and the processing is terminated (F709).

As can be seen from the processing up to this point, in the case of the above-described first and second reproduction prohibition registration methods, RAM (RAM
Only the personal identification number was stored in 11a), but R
In the third reproduction inhibition registration method corresponding to the OM disc, not only the personal identification number but also the disc ID or the disc identification data as a custom file is stored in the RAM (RAM6).
It will be registered in 1a).

[0187] Further, the user can cancel the registration of a disc which has been once registered for reproduction prohibition. When the password registration cancel operation is performed, the process proceeds from step F710 to step F711. Here, it is determined whether or not the same disc identification data as the disc identification data for the currently loaded disc is registered in the RAM 61a. That is, it is confirmed whether the disc ID is stored in the case of a video CD or the custom file is stored in the case of a CD-DA.

If the same disc identification data (disc ID or custom file) of the disc currently loaded is not registered, the disc is not registered for reproduction prohibition, and the process is terminated. .

If the same one is registered, RAM6
In 1a, for example, a cancel flag is added to the disc identification data to make it cancellation data (F712).
It should be noted that the reason why the cancel flag is added without erasing the disc identification data is to positively display on the display unit 69 the fact that the cancellation has been executed during reproduction.
If this is not done, the corresponding disc identification data may be erased. Then, the cancel execution is displayed on the display unit 69 and the process is terminated (F71).
3).

<19. Reproduction Method Corresponding to Third Reproduction Prohibition Registration Method> In response to reproduction prohibition registration as shown in FIG. 31, the system controller 61 in the reproduction apparatus of FIG. Will be done.

When a disc 51 is loaded (F801),
First, the TOC is read from the disk 51 (F802).
If the disk 51 is a video CD, the process proceeds from step F803 to F804 to read the PVD position data in the track 1 area, and it is determined from the PVD data in FIG. 29 whether the disk is a video CD. . When it is determined that the disc is a video CD, the process proceeds from step F805 to F806 to capture the disc ID recorded in the disc information.

Here, it is determined whether or not the same data as the fetched disc ID exists in the disc ID registered as disc identification data in the RAM 61a (F807). If it does not exist, the reproduction prohibition registration is not performed for the disc 51, and therefore the process proceeds to step F812, and the reproduction possible mode is turned on.

If the same disc ID is stored in the RAM 61a, the disc 61 has been subjected to reproduction inhibition registration at least once. However, the RA
When the cancel flag is added to the disc ID registered in M61a, the reproduction prohibition registration has already been released. Therefore, if the cancel flag is added, the process proceeds from step F808 to step F809 to display on the display unit 69 that the reproduction prohibition registration has been canceled for this disc 51, and then the step
Proceed to F812 to turn on the reproducible mode.

If it is determined in step F808 that the cancel flag is not attached, the loaded disc 51
Is a reproduction prohibition registration. For this reason, a display prompting the user to enter the personal identification number is displayed (F810). Here, if the user enters the PIN,
The input personal identification number is compared with the registered personal identification number stored in the RAM 11a (F811), and if they match, step F812
Go to and turn on the reproducible mode. However, if the entered security code does not match the registered security code, or if the security code has not been entered within the specified time, or if the playback operation is performed without the security code being input. Advances to step F813 to turn on the reproduction prohibition mode.

When it is determined that the disc 51 is a CD-DA when the disc 51 is loaded, the process proceeds to step F814 to create a custom file from the TOC data.

Then, it is determined whether or not the same data as the generated custom file exists in the custom file registered as the disc identification data in the RAM 61a (F815). If it does not exist, the reproduction prohibition registration is not performed for the disc 51, and therefore the process proceeds to step F812, and the reproduction possible mode is turned on.

If the same custom file is stored in the RAM 61a, the disc 61 has been subjected to reproduction prohibition registration at least once. However, when the cancel flag is added to the custom file registered in the RAM 61a, the reproduction prohibition registration has already been canceled. Therefore, if the cancel flag is added, the process proceeds from step F816 to F819 to display on the display unit 69 that the reproduction prohibition registration has been canceled for this disc 51, and then the process proceeds to step F812 to set the reproducible mode. To turn on.

If it is determined in step F816 that the cancel flag is not attached, the loaded disc 51
Is a reproduction prohibition registration. Therefore, a display prompting the user to enter the personal identification number is displayed (F817). Here, if the user enters the PIN,
The input personal identification number is compared with the registered personal identification number stored in the RAM 11a (F818), and if they match, step F812
Go to and turn on the reproducible mode. However, if the entered security code does not match the registered security code, or if the security code has not been entered within the specified time, or if the playback operation is performed without the security code being input. Advances to step F813 to turn on the reproduction prohibition mode.

When the user performs a reproducing operation after the above processing is performed when the disc is loaded, the reproducing operation is executed only in the reproducible mode. Therefore, the system controller 61 executes the same processing as that shown in FIG. That is, if a playback operation is performed
(F301), first, the system controller 61 confirms whether the reproduction prohibited mode is turned on or the reproducible mode is turned on (F302). When the reproducible mode is on, the reproducing operation for the loaded CD-DA or video CD is started (F303).

On the other hand, if the reproduction prohibition mode is turned on, the reproduction operation performed by the user is ignored and the reproduction is not started (F304), and the display unit 69 indicates that the reproduction prohibition registration has been made for the disc. Is displayed and the process ends (F
305).

As described above, FIG. 31, FIG. 32, and FIG.
By performing the processing of (1), the user can conceal the content of a specific disc by a personal identification number so that it cannot be reproduced by others. Further, if the personal identification number is forgotten, the personal identification registration cancel operation may be performed as described above. In addition, when the password registration cancel operation is performed, the display of the canceled state is positively displayed on the display unit 69 in the processing of steps F809 and F819. Therefore, even if another person cancels the registration, Can know that the registration was canceled without permission when the disc was loaded.

Various modifications of the third reproduction prohibition registration method are possible. For example, the reproduction prohibition registration may be made only for the video CD. In this case, if it is determined to be CD-DA in step F803 of FIG. 32, the process unconditionally proceeds to step F812. Of course, conversely, the reproduction prohibition registration may be made only for the CD-DA.

For video CDs, the disc ID
Also, although the reproduction prohibition registration is performed using the custom file for the CD-DA, the custom file may be used for the video CD. Further, in the case of a video CD, an album recognizer in the PVD area may be used. Further, the custom file does not necessarily have to be generated from the TOC, and a subcode in the data area or actual audio data may be used.

Further, in the embodiment, only one personal identification number is registered, but it is also possible to individually register a different personal identification number for each disc. That is, the personal identification number may be stored in the RAM 61a in association with each disc identification data.

Further, in this embodiment, the video disc and the CD-DA are taken as examples of the ROM disc, but the CD-R is used.
It goes without saying that it can be applied as a reproducing device corresponding to various kinds of discs called OM.

[0206]

As described above, according to the present invention, the user performs the reproduction prohibition registration for the specific recording medium or the specific track recorded on the recording medium, so that the correct information registered in the reproducing apparatus is obtained. There is an effect that it is possible to prevent the content from being reproduced without inputting the personal identification number, and it is possible to secure the confidentiality of the content of the video / audio etc. recorded by oneself or the content of the purchased software. Therefore, it is suitable for the user's management of a disc on which audio / video data that needs to be kept secret and audio / video data for adults is recorded.

Further, by making the reproduction prohibition registration cancelable, it is possible to reproduce the password as an emergency measure when the password is forgotten. Also, when the playback prohibition registration cancellation is executed for a certain disc or track,
Displaying that effect has the effect that the person can know the fact even if another person cancels it.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a video / audio compatible recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a recording / reproducing apparatus that supports only audio according to the embodiment.

FIG. 3 is an explanatory diagram of a track structure of a disc supported by the recording / reproducing apparatus of the embodiment.

FIG. 4 is an explanatory diagram of P-TOC information on a disc.

FIG. 5 is an explanatory diagram of U-TOC information on a disc.

FIG. 6 is an explanatory diagram of a link structure of U-TOC information on a disc.

FIG. 7 is an explanatory diagram of audio data sectors on a disc.

FIG. 8 is an explanatory diagram of a video data sector on a disc.

FIG. 9 is an explanatory diagram of an audio data sector and a video data sector.

FIG. 10 is an explanatory diagram of MPEG system video data.

FIG. 11 is an explanatory diagram of a video data stream of MPEG system.

FIG. 12 is an explanatory diagram of a track in which audio data and video data are mixed.

FIG. 13 is an explanatory diagram of a track structure in which audio data and video data are mixed.

FIG. 14 is an explanatory diagram of video data.

FIG. 15 is an explanatory diagram of a system header of video data.

FIG. 16 is an explanatory diagram of a packet header of video data.

FIG. 17 is an explanatory diagram of a track configuration example.

FIG. 18 is an explanatory diagram of an audio data management system in the U-TOC sector 0 in the recording / reproducing apparatus of the example.

FIG. 19 is an explanatory diagram of a video data management system in the U-TOC sector 0 in the recording / reproducing apparatus of the embodiment.

FIG. 20 is an explanatory diagram of a management system of a track in which video data and audio data are mixed in the U-TOC sector 6 in the recording / reproducing apparatus of the embodiment.

FIG. 21 is a flowchart of a registration process of a first reproduction prohibition registration method according to the embodiment.

FIG. 22 is a flowchart of a process when a disc is loaded in the first reproduction prohibition registration method according to the embodiment.

FIG. 23 is a flowchart of processing at the time of reproduction in the first and third reproduction prohibition registration methods according to the embodiment.

FIG. 24 is a flowchart of a registration process of a second reproduction prohibition registration method according to the embodiment.

FIG. 25 is a flowchart of processing when a disc is loaded according to the second reproduction prohibition registration method of the embodiment.

FIG. 26 is a flowchart of processing during reproduction according to the second reproduction prohibition registration method according to the embodiment.

FIG. 27 is a block diagram of a reproducing apparatus compatible with a ROM disk according to an embodiment of the present invention.

FIG. 28 is an explanatory diagram of track structures of a CD-DA and a video CD.

FIG. 29 is an explanatory diagram of a PVD structure of a video CD.

FIG. 30 is an explanatory diagram of a disc information structure of a video CD.

FIG. 31 is a flowchart of a registration process of a third reproduction prohibition registration method according to the embodiment.

FIG. 32 is a flowchart of processing when a disc is loaded according to the third reproduction inhibition registration method of the embodiment.

[Explanation of symbols]

 1,51 disk 3,53 optical head 8 encoder / decoder section 11,61 system controller 11a, 61a RAM 12 memory controller 13 buffer RAM 14 audio encoder / decoder section 15, 25, 63, 65 D / A converter 18, 30 A / D converter 19,68 Operation part 20,69 Display part 21 Video encoder / decoder part 22 System decoder 23 Video RAM 24 Video signal generator 26,29,67 Converter 58 Decoder part 60 Video CD decoder

Claims (5)

[Claims] 1. A reproducing apparatus capable of reading out data from a recording medium and reproducing and outputting the data, a storage unit capable of storing the password registration data, and a predetermined medium portion of the data read out from the recording medium. Identification information capturing means, input means capable of inputting a personal identification number, recording medium identification information captured by the identification information capturing means, and the personal identification number input from the input means, PIN registration control means capable of being stored as data in the storage means, and recording in which the recording medium identification information taken in by the identification information taking-in means when the recording medium is loaded is stored in the storage means When it matches with the medium identification information, the user is requested to input the personal identification number, and the input personal identification number and the personal identification number stored in the storage means are Depending on the compare result, reproducing apparatus characterized by being configured to have, a reproduction control means for controlling the reproducing operation on the recording medium loaded. 2. A reproducing apparatus capable of reading out data from a recording medium and reproducing and outputting the data, wherein storage means capable of storing personal identification registration data and a predetermined data portion of data read out from the recording medium are operated. Identification information generating means for generating recording medium identification information, input means for inputting a personal identification number, recording medium identification information by the identification information generating means, and personal identification number input from the input means PIN registration control means capable of being stored as data in the storage means, and recording medium identification information in which the recording medium identification information by the identification information generating means when the recording medium is loaded is stored in the storage means. If they match, the password input is requested, and the input password and the password stored in the storage means are Depending on the compare result, reproducing apparatus characterized by being configured to have, a reproduction control means for controlling the reproducing operation on the recording medium loaded. 3. A recording device capable of writing data to a recording medium on which main data and management data for managing recording / reproducing operation of the main data are recorded, The recording control means is capable of writing unconditional reproduction prohibition information as management data in a predetermined area so as to correspond to all tracks or a specific track among the tracks recorded on the recording medium. A recording device characterized by the above. 4. A personal identification number can be input in a reproducing apparatus capable of reproducing data from a recording medium on which main data and management data for managing recording / reproducing operation of the main data are recorded. Input means, storage means capable of storing personal identification registration data, personal identification number control means capable of storing the personal identification number input from the input means in the storage means as personal identification registration data, and read from a recording medium. Discriminating means for discriminating the presence or absence of the unconditional reproduction prohibition information for the recording medium or each track recorded on the recording medium from the recorded management data, and the unconditional discriminating means by the discriminating means when the recording medium is loaded. When it is determined that the reproduction prohibition information is present, the user is requested to input the personal identification number, and the input personal identification number and the personal identification number stored in the storage means are stored. Comparison result according to the playback apparatus characterized by being configured to have, a reproduction control means for controlling the reproducing operation on the recording medium loaded in. 5. It is possible to change from a state in which the password registration data is held in the storage means to a state in which all or part of the password registration is canceled, and at the time of reproducing a recording medium in which the password registration is canceled. 5. The reproducing apparatus according to claim 1, 2 or 4, wherein an output for recognizing that the password registration has been canceled is executed.