WO2012039147A1

WO2012039147A1 - Copy management device, recording and playback device for optical disc, read-only optical disc, and copy management method

Info

Publication number: WO2012039147A1
Application number: PCT/JP2011/054381
Authority: WO
Inventors: 裕永井; 健司赤星; 貴清安川
Original assignee: 日立コンシューマエレクトロニクス株式会社
Priority date: 2010-09-24
Filing date: 2011-02-25
Publication date: 2012-03-29
Also published as: JP2012069209A

Abstract

Provided are a copy management device, recording and playback device for an optical disc, read-only optical disc, and copy management method capable of resolving the conventional problem of increasing manufacturing cost by not requiring recording with a laser for each disc. A copy management device for controlling copying of content from an optical disc is equipped with means for switching processing of copy permission on the basis of whether identification information of the optical disc is identification information including individual identification information or identification information which does not include the individual identification information. A copying device for performing copying of content from the optical disc (recording and playback device for the optical disc) is equipped with means for transmitting type information of the identification information which indicates whether the identification information of the optical disc is identification information including the individual identification information or identification information which does not include the individual identification information. Upon an optical disc for read-only (read-only optical disc) is recorded, together with the identification information upon the BCA thereof, type information which indicates whether the identification information is identification information including the individual identification information or identification information which does not include the individual identification information. In addition, the copy management method for managing copying of content from the optical disc switches processing of copying permission depending upon whether the identification information of the optical disc is identification information including the individual identification information or identification information which does not include the individual identification information.

Description

Copy management apparatus, optical disc recording / reproducing apparatus, reproduction only optical disc, and copy management method

The present invention relates to an optical information recording method and a recording apparatus.

As described in Non-Patent Document 1 below, currently, an optical disc having a recording density of about 50 GB is commercialized for consumer use according to the Blu-ray Disc (trademark) standard or the like using a blue-violet semiconductor laser . Non-Patent Document 1 also describes that Blu-ray Disc (trademark) adopts AACS (Advance Access Content System) as a copy protection technology. In addition, Non-Patent Document 1 also describes a managed copy in which the device is managed under which the content is copied under management of the AACS and the copy is permitted.

With managed copy, if it is possible to identify each copy source disc individually, it is possible to obtain information on how many copies have been performed from the disc, etc., and it is considered to enable various services. Be Although BCA is effective for individual identification, there is a problem that manufacturing cost becomes high because recording is performed by laser for each sheet. Therefore, the present invention is achieved in consideration of the problems in the above-described conventional technology, and a copy management apparatus, an optical disk recording / reproducing apparatus, a reproduction-only optical disk, and a copy management that solve the above-mentioned problems of the conventional technology. Its purpose is to provide a method.

In order to achieve the above object of the present invention, according to the present invention, the inventions described in the following claims are provided.

According to the present invention, the copy management apparatus switches the processing depending on the presence or absence of the individual identification code, and therefore, the optimum processing can be performed when the individual identification is present or not. In addition, the copying apparatus sends information on the presence or absence of a solid identification code to the copy control apparatus, thereby enabling optimal control of the copy management apparatus.

FIG. 2 is a block diagram of a recorder and a copy management device according to the present invention. FIG. 7 is an operation flowchart of the disk copy management device according to the present invention. FIG. 7 is an operation flowchart of the disk copy management device according to the present invention. FIG. 6 is an operation flowchart of the recorder according to the present invention. It is a BCA format figure handled by the recorder by this invention. It is a BCA format figure handled by the recorder by this invention. It is an outline figure of an optical disk. FIG. 2 is a structural diagram of a single-layer ROM disk used in the present invention. FIG. 2 is a structural diagram of a two-layer ROM disk used in the present invention. FIG. 2 is a structural diagram of a recording layer of a ROM disk used in the present invention. It is a data frame structure figure of the disc used for this invention. It is a scrambled data frame structure figure of the disk used for the present invention. It is a data block block diagram of 216 rows 304 columns of the disk used for this invention. It is a LDC block structure figure of the disk used for this invention. FIG. 7 is a block diagram showing a first interleaving for an LDC block; FIG. 7 is a block diagram showing a second interleaving for an LDC block; It is a structural diagram of the address information of the disc used for this invention. It is a block diagram of the access block of the disk used for this invention. It is a block diagram of the BIS block of the disc used for this invention. It is a block diagram of BIS cluster of the disk used for this invention. It is a block diagram of the ECC cluster of the disk used for this invention. It is a block diagram of the recording frame of the disc used for this invention. It is a figure explaining conversion of 1-7 modulation used with a disk used for the present invention. It is a figure which shows the synchronous signal pattern table of a synchronous frame. It is a structural view showing the position of BCA of the disk used for the present invention. It is a figure which shows the conversion table which shows the modulation speed of BCA of the disc used for this invention. It is a figure which shows the recording shape of BCA of the disc used for this invention. It is a data structure figure of BCA of the disc used for this invention. It is a figure which shows the pattern table of the synchronous signal of BCA. It is a block diagram of the ECC block of a BCA code. It is a block diagram of the data block of BCA. It is a block diagram of the optical disk recording and reproducing apparatus used for this invention. It is a block diagram of a back end processing part used for the present invention.

[Disk copy device and copy management device]
A home recorder having a copy function of an optical disc according to an embodiment of the present invention and a copy management apparatus will be described with reference to FIGS. 1, 2 and 3. FIG. FIG. 1 is a block diagram of a home recorder and a copy management apparatus having an optical disk copy function, which is an embodiment of the present invention. FIG. 2 is a flow chart showing the operation of the home recorder having the optical disk copy function of FIG. FIG. 3 is a flowchart showing the operation of the copy management apparatus of FIG.

First, the configuration of a home recorder having a copy function of an optical disc and a copy management apparatus will be described using the block diagram of FIG. A home recorder 101 has a copy function of an optical disc, a copy management apparatus 102, and a display apparatus 108. The home recorder 101 having an optical disc copy function includes an optical disc recording / reproducing unit 103, an HDD (Hard Disc Drive) unit 104, a back end unit 105, a communication processing unit 106, and a copy controller 107. The copy management apparatus 102 includes a BCA Type determination unit 109, a copy permission determination unit 110, and a communication processing unit 111.

The optical disc recording and reproducing unit 103 performs reproduction of a reproduction-only disc, which is a copy source, and recording processing on a recordable disc, which is a copy destination. The HDD unit 104 temporarily records reproduction data of the reproduction only disk from the optical disk recording and reproduction unit 103, and reproduces the temporary recording data when the disk recording and reproduction unit 103 performs recording on the recordable disk. The back end unit 105 compresses and decompresses a video signal, and at the time of recording, a signal from the external input terminal 122 (video), 123 (audio) or the tuner 112 is input, and compression processing and multi stream processing are performed. A plex process or the like is performed, and a recording stream is supplied to the optical disc recording and reproducing unit 103 or to the HDD unit 104. The back end unit 105 selects and inputs the reproduction signal from the optical disc recording / reproduction unit 103 or the reproduction signal from the HDD unit 104 at the time of reproduction, and performs demultiplexing of the input signal before performing audio / video. And the video signal output terminal 125 to the display 108. The audio signal output terminal and the video signal output terminal may be considered to output both at one output terminal like HDMI. When the back end unit 105 temporarily records the reproduction data of the reproduction only disk from the optical disk recording and reproduction unit 103 in the HDD unit 104, the reproduction signal from the optical disk recording and reproduction unit 103 is received according to the copy permission signal of the copy controller 107. Then, the recording signal is supplied to the HDD unit 104. The back end unit 105 receives the BCA information and BCA Type information from the optical disc recording and reproducing unit 103 when the optical disc recording and reproducing unit 103 reproduces the BCA part of the reproduction-only disc, and the BCA information by the signal line 116 Information is sent to the communication processing unit 106 through a signal line 117. When the temporary recording data of the HDD unit is recorded on the recordable disk by the disk recording / reproducing unit 103, the back end unit 105 inputs a reproduction signal from the HDD unit 104 according to the copy permission signal of the copy controller 107, The recording signal is supplied to the reproduction unit 103. The communication processing unit 106 transmits the BCA information and BCA type information input from the back end unit 105 and the copy request signal input from the copy controller 107 to the copy management apparatus 102 via the communication line 128 such as the Internet. At the same time, the copy permission information from the copy management apparatus 102 is received via the communication line 128, and the copy permission information is sent to the copy controller 107. In addition, the communication processing unit sends information related to copying, such as a copy permission signal from the copy management apparatus 102, to the back end unit 105, and displays it on the display 108 for the user. The copy controller 107 controls copying from the reproduction-only disc to the recordable disc in the optical disc recording / reproducing unit 103 while communicating with the copy management apparatus 102, and the copy request input by the user is from the terminal 120. When the fee payment information input is input from the terminal 121 and the identification information of the copying apparatus is sent to the copy management apparatus 102 via the communication processing unit 106, the back end unit 105 is controlled to control the BCA information and BCA Type information. Transmission to the copy management apparatus 102 via the communication processing unit 106 is performed, and the reproduction-only disc from the optical disc recording / reproducing unit 103 is made according to a copy permission signal input from the copy management apparatus 102 via the communication processing unit 106. Control of temporary recording of playback data, HDD unit Temporary recording data for controlling the availability of that recorded in the recordable disk by the disk recording and reproducing unit 103.

The display 108 is provided with a speaker which receives the video signal from the back end unit 105 from the video signal output terminal 125, displays it, and receives the audio signal from the audio signal output terminal 124, and outputs this.

The communication processing unit 111 outputs the BCA information and the copy request signal input via the communication line 128 such as the Internet, the copy fee payment information and the identification number of the copying apparatus to the copy permission determination unit 110, and performs communication such as the Internet The BCA Type information input via the line 128 is output to the BCA Type determination unit 110, and the copy permission information input from the copy permission determination unit 110 is transmitted to the copy apparatus 101 via the communication line 128. The BCA Type determination unit 109 determines, from the input BCA Type information, whether the BCA of the reproduced disc can or can not be identified as a solid that identifies one by one. The determination result is sent to the copy permission determination unit 110. The copy permission determination unit 110 determines the copy permission based on the possibility of solid identification by the BCA, the BCA information, the copy fee payment information, and the copy request, and outputs the copy permission information to the communication processing unit 111.

Next, the operation of the optical disk management apparatus 102 will be described using the flowchart of FIG. When the process is started (201), first, copy request 1 from the home recorder 101 having the optical disc copy function is received (202). This indicates that the user has requested a copy. The signal of copy request 1 is sent to the copy permission determination unit 110. When the copy request 1 is received, the copy permission determination unit 110 requests the BCA Type information and the BCA information to the home recorder 101 having the optical disk copy function via the communication processing unit 111 and the communication line 128 (203). In response to the request (203), the BCA type information and the BCA information transmitted from the home recorder having the optical disc copy function are received (204). The BCA Type information is sent to the BCA Type determination unit 111, and the BCA information is sent to the copy permission determination unit 110. The BCA Type determination unit 109 determines whether the received BCA is identification for each disk, that is, whether or not solid identification is possible (205). If individual identification is possible, the copy permission determination unit 110 determines based on the BCA information whether free copying is possible (206). Assuming that free copying can be performed n times (n: natural number) for a single disc, free copying is possible if the number of free copying performed in the past by the copy permission determination unit 110 is n or less. If the offer is accepted, the free copy is not permitted if the number of times is greater than n. If the free copy is not permitted, the copy permission determination unit 110 determines based on the BCA information in the copy permission determination unit 110 whether the paid copy is possible (221). If it is determined that it is determined that the paid copy is not made, the subsequent processing is continued from 217 onwards, and if it is determined that the paid copy is possible, the information of the paid copy offer is sent to the household mass recorder 101. If accepted, the copy fee for the disc has already been paid, for example if 5 copy fees have been paid in a batch, but the copy has actually been made 3 times In other words, it is determined in association with the BCA information whether there is a balance for the disc (207). If there is a balance, processing continues to processing 213. If there is no balance, a payment request is made (208). Next, it is determined whether or not payment information has been received in response to the payment request 208 and whether copying is possible or not from the BCA information (209). If the payment information is received, the payment information is stored in the copy permission determination unit 110 (210), and the process continues to the process 213. If payment information is not received, processing continues at process 217. If it is determined in the BCA Type determination processing 205 that solid identification is not possible, it is not possible to know how many times free copies have been made to one disc, so the free copy determination 206 is skipped and 221 charges are applied. Make a decision on whether to copy or not. The processes following the

steps

222 and 207 to the process 213 or the process 217 are the same as in the case where solid identification is possible. The description from process 213 is continued. In processing 213, if processing is performed following 220, a message indicating that free copying is permitted is performed, and if processing is performed following 207-Yes, a message indicating that copying is permitted with a paid fee. When processing is to be performed subsequently to 210, a message indicating that copying is permitted due to the current payment procedure is sent to the home recorder 101 having the optical disc copy function. In response to the sent message 214, the copy request signal 2 is received. This is the final confirmation of whether the user instructs execution for the permission message. After confirmation (214) of the copy request signal 2, the copy permission signal is sent from the copy permission determination unit 110 to the home recorder 101 having the optical disk copy function via the communication processing unit 111 and the communication line 128 (215). After transmitting the copy permission signal (215), a copy end result, ie, a history of whether the free copy was performed, the copy was made with the paid fee, or the copy was performed with the currently paid fee 216 is accumulated. The post-accumulation processing of the history is ended (219). The description of the process from the one process 217 is continued. The process 217 sends a message indicating that the copy is not permitted to the home recorder 101 having the optical disc copy function. Thereafter, the copy permission signal is sent from the copy permission determination unit 110 to the home recorder 101 having the optical disk copy function via the communication processing unit 111 and the communication line 128 (218). After 218, the process ends.

In this copy management device, a disc capable of solid identification and a disc not capable of solid identification are discriminated, and a disc capable of solid identification performs copy control including free copy and a disc incapable of solid identification. Since copy control not including free copying is performed, even if a disc capable of solid identification and a disc not capable of solid identification are mixed, it is possible to manage copy suitable for each.

Next, an example of another operation of the optical disc management apparatus 102 will be described using the flowchart of FIG. The contents of each process of the flowchart of FIG. 3 are the same as the processes of the flowchart of FIG. 2 except for the transmission of the copy permission message 313.
The difference from FIG. 2 in the combination order of each processing of FIG. 3 and the processing contents of 313 will be described. First, with regard to the difference in the combination order of the processes, the process 206 and the process 221 are performed in parallel, not sequentially, in the case of the presence of solid identification. Next, the process 313 will be described. Along with the parallel processing of the processing 206 and the processing 221, the copy permission message transmits a permission message for each of the processings Yes in the processing 206, the processing 207, and the processing 209.

Therefore, it is possible to make a copy authorization decision based on the fee for which the payment procedure has been made, regardless of whether the fee has already been paid, or based on the free copy decision. It can be done regardless. Therefore, the management process is more user-friendly.

Next, the operation of a home recorder having an optical disk copy function, which is an embodiment of the present invention, will be described using the flowchart of FIG. When the process is started (401), first, it is judged whether there is a request for copying from the user (402). When the request is received, a check is made to see if the disc can not be reproduced due to a factor such as scratches and copying for rental etc. Check if the disk is not permitted in the first place (403). If the result of the check indicates that copying is not possible, the processing is ended (412). If the result of the check does not indicate that copying is impossible, the copy request signal 1 is transmitted to the copy management apparatus 102 (404) to indicate that the user intends to copy. Next, BCA Type information and BCA information are transmitted to the copy management apparatus 102 (405). At this time, the identification code of the home recorder having a copy function of the optical disc is also sent to the copy management apparatus 102. Next, a copy offer is received from the copy management apparatus 102 (423), and when a free copy offer comes (421), if the user receives the offer, the request for the free copy is sent back according to the input from the user And (422), and proceeds to processing (420). If the free copy offer does not come and the paid copy offer is received (406), the paid copy request is issued according to the user's input (424), and if there is a further payment request, the input from the user The payment information is sent to the copy management apparatus 102 according to (407). This doubles as a request for paid copy. On the other hand, the copy permission / non-permission information is received (420), displayed on the display 108, permission / non-permission is judged from the copy permission information (408), and the process is ended if the copy is not permitted ( 412). If the copy is permitted, the copy request 2 is transmitted to the copy management apparatus 102 according to the final judgment input by the user (409). When the copy request 2 is transmitted (409), the process waits for the reception of the copy permission signal from the copy management apparatus 102 (410), and performs copying from the reproduction-only medium to the recording medium (411). After the end of the copy process (411), the whole process ends (412).

As described above, according to the present embodiment, even if a disc capable of solid identification and a disc not capable of solid identification are mixed, the information for distinguishing between the two is transmitted to the management apparatus. You can copy to the disk.

Next, the data format of the BCA of the read-only disc used in the present invention will be described. FIG. 5 shows the format of a data block used for BCA capable of individual identification. Further, FIG. 6 shows the format of data blocks used for both of the solid identifiable and non-solid identifiable ones.

It is assumed that a disc conforming to the format of FIG. 5 already exists on the market, and a reproduction-only disc conforming to the format of FIG. 6 is newly manufactured. In FIG. 5, Byte in the vertical direction indicates what byte of data, and Bit in the horizontal direction indicates what Bit of data. In FIG. 5, Byte 0 of BCA is a content code, and Bit 7 to Bit 2 of them are identifiers (application ID), and in this case, 000001 is set.

Bits

1 and 0 of Byte 0 are sequence numbers, and if the BCA consists of a plurality of data blocks, it indicates the number of the sequence. The sequence number is also shown in the description of BCA described later. Byte 1 and Byte 2 are manufacturer identification codes. Byte 3 to Byte 15 are unique numbers added to each disk. That is, it is a number capable of solid identification. The format of FIG. 5 provides solid-state information sufficient for fine control of copying. However, it is necessary to assign a different number to each sheet for recording, which increases the manufacturing cost.

In FIG. 6, Byte in the vertical direction indicates what byte of data, and Bit in the horizontal direction indicates what Bit of data. In FIG. 5, Byte 0 of BCA is a content code, and Bit 7 to Bit 2 of them are identifiers (application ID), and in this case, 000001 is set.

Bits

1 and 0 of Byte 0 are sequence numbers, and if the BCA consists of a plurality of data blocks, it indicates the number of the sequence. The sequence number is also shown in the description of BCA described later. Bit 7 of Byte 1 is a unique number (that is, a number capable of solid identification) in which Byte 3 to Byte 15 are added for each disk in the case of 0, and in the case of 1 each group of managed disks (for example, general consumers Indicates a number (ie, a solid non-identifiable number) attached to the disk for business use and the disk for business use. Byte 1 and Byte 2 excluding Bit 7 of Byte 1 are manufacturer identification codes. Byte 3 to Byte 15 are as described for Bit 7 of Byte 1. In the format of FIG. 6, both solid state information sufficient for fine control of copying can be obtained but the manufacturing cost is high, and the fineness of copy management is slightly reduced, but the manufacturing cost can be lowered. It is possible to coexist. Moreover, it is a switching Bit of the contents of Byte 3 to 15 allocated to Bit 7 of Byte 1, but among the identification codes of the manufacturer of Byte 1 and Byte 2 of the format of FIG. Thus, the format of FIG. 5 and the format of FIG. 6 can coexist. Further, even if a specific Bit is not allocated as the switching Bit of the contents of Byte 3 to 15, the same thing can be realized by allocating two kinds of identification codes of the manufacturer according to the contents of Byte 3 to 15.

Disc shape
The shape of the read-only disc used in the present invention will be described. FIG. 7 shows an outline of the optical disk. FIG. 8 shows a single-layer ROM (read only) disc. FIG. 9 shows a dual layer ROM (read only) disc. The single-layer ROM disk shown in FIG. 8 has a label side on which a label is written and a recording side on which a light beam for reproduction is incident. It comprises a cover layer for protecting the recording surface from the recording surface side, a recording layer on which a signal is recorded, and a base layer therebelow. The two-layer ROM disk shown in FIG. 9 also has a label surface on which a label is written and a recording surface on which a light beam for reproduction is incident. A cover layer for protecting the recording surface from the recording surface side, a recording layer (L1) on which a signal is recorded, a space layer separating the other recording layer, a recording layer (L0 on which another signal is recorded) And the underlying layer below.

Next, the structure of the recording layer of the single layer ROM disk and the double layer ROM disk is shown in FIG. FIG. 10 schematically shows the cross section of the disk with the left side as the inner periphery and the right side as the outer periphery. FIG. 10A shows the disk structure of the recording layer L0 of the single-layer ROM disk and the double-layer ROM disk. FIG. 10B shows the disk structure of the recording layer L1 of the dual layer ROM disk.

In FIG. 10A (a) L0 disc structure, 1001 is a BCA (Burst Cutting Area), and information unique to the disc is recorded. Reference numeral 1002 denotes an inner zone 0 in which information on attributes of the disc, control information, and the like are recorded. Also called Lead-in. Reference numeral 1003 denotes Data Zone 0, in which user data such as AV data is recorded. Reference numeral 1004 denotes Outer Zone 0 in which control information and the like are recorded. Inner Zone 0 (1002) includes Protection Zone 1 (1005), PIC (1006), Protection Zone 2 (1007), INFO 02 (1008), reseved (1009), and INFO 01 (1010). Protection Zone 1 (1005) is an area for separating BCA (1001) and PIC (1006). PIC (1006) has information on disk type, information on disk size, information on disk version, information on disk structure, information on channel bit length, information on presence or absence of BCA, and maximum application. Information on the transmission rate is recorded. Protection Zone 2 (1007) is an area for separating PIC (1006) and INFO 02 (1008). Control information is recorded in INFO 02 (1008). reseved (1009) is a spare area. Control information is recorded in INFO01 (1010). Outer zone 0 (1004) is composed of INFO 3/4 (1011) and Protection Zone 3 (1012). Control information is recorded in INFO 3/4 (1011). Protection Zone 3 (1012) further separates INFO 3/4 (1011) from the outer peripheral portion. In FIG. 10 (a), the arrow from the inner periphery to the outer periphery of the L0 disk structure is recorded such that the recording layers L0 of the single layer ROM disk and the dual layer ROM disk are read from the inner periphery toward the outer periphery. Indicates

In FIG. 10B (b) L1 disc structure, 1014 is Inner Zone 1, and information on attributes of the disc, control information and the like are recorded therein. Also called Lead-out. 1015 is Data Zone 0, in which user data such as AV data is recorded. Reference numeral 1016 denotes Outer Zone 1 in which control information and the like are recorded. Inner Zone 1 (1014) consists of Protection Zone 1 (1017), PIC (1018), Protection Zone 2 (1019), INFO 02 (1020), reseved (1021), INFO 01 (1022). Protection Zone 1 (1017) is an area for separating the PIC (1018) from the inner circumference side. The PIC (1018) has information on the type of disc, information on disc size, information on disc version, information on disc structure, information on channel bit length, information on presence or absence of BCA, and maximum application. Information on the transmission rate is recorded. Protection Zone 2 (1019) is an area for separating PIC (1018) and INFO 02 (1020). Control information is recorded in INFO 02 (1020). reseved (1021) is a spare area. Control information is recorded in INFO01 (1022). Outer Zone 1 (1016) is composed of INFO 3/4 (1023) and Protection Zone 3 (1024). Control information is recorded in INFO 3/4 (1023). Protection Zone 3 (1024) further separates INFO 3/4 (1023) from the outer peripheral portion. The arrow from the outer periphery to the inner periphery of the L1 disk structure in FIG. 10B indicates that the recording layer L1 of the dual layer ROM disk is recorded so as to be read from the outer periphery toward the inner periphery.

[Data encoding process]
The recording process of user data will be described. As shown in FIG. 11, user data is divided into 2048-byte units, and 4-byte error detection codes are added to each of them to form a 2052-byte data frame. Next, scramble processing is performed on each data frame as shown in FIG. 12 to construct a scrambled data frame. Next, as shown in FIG. 12, 32 scrambled data frames are collected. Next, rearrangement is performed in order of columns, and data blocks of 216 rows and 304 columns are configured as shown in FIG. Then, as shown in FIG. 14, each column of the data block is encoded with Reed-Solomon code of (248, 216, 32), 32-byte parity is added, and a new LDC of 248 rows and 304 columns (Long) is added. Construct a Distant Code block. The next first interleaving and second interleaving are processed for the LDC block. As shown in FIG. 15A, the first interleaving rearranges data in even-numbered columns and data in subsequent odd-numbered columns alternately to form a block of 496 rows and 152 columns. For the second interleaving, the first two rows are not shifted, and the next two rows are shifted three bytes to the left, in units of two rows from the top, as shown in FIG. The next two rows are shifted by 6 bytes, the next two rows are shifted by 9 bytes to the left, and relocation is performed to increase the shift amount by 3 bytes. The first interleaved data and the second interleaved data form an LDC cluster.

On the other hand, the address added to this data block is generated as follows.

As shown in FIG. 16, the data block is divided into 16 address units, each of which is assigned 9 bytes of address information. The 9-byte breakdown consists of 4-byte address, 1-byte flag information, and 5-byte address and parity added to the flag information. The addresses are interleaved to form a matrix of 6 rows and 24 columns. At the same time, 18 bytes of user control data, 32 units, are arranged in a 24 × 24 matrix.

The matrix of 6 rows and 24 columns described above and the matrix of 24 rows and 24 columns are combined to form 30 rows and 24 columns of access blocks shown in FIG. Each row of the access block is encoded with (62, 33, 32) Reed-Solomon code, added with 32-byte parity, and BIS (Burst Indicating Subcode) block of 62 rows and 24 columns shown in FIG. Form Relocation is performed on the data of the BIS block to form a BIS cluster of 496 rows and 3 columns shown in FIG.

The LDC cluster is divided into 38 columns, and the data of the BIS cluster is inserted one by one between them to form an ECC cluster shown in FIG.

For each 155-byte data in each row of the ECC cluster, a 20-bit frame sync signal is added at the beginning, and the 155-byte data is divided into the first 25 bits and 45 bits thereafter, and DC control bits are inserted between them. The recording frame shown in FIG. The DC control bit is controlled such that the DSV after modulation is close to zero.

The modulation of the data of the recording frame is performed by 17 modulation according to the table shown in FIG. The frame synchronization signal is added using a 30-bit synchronization code as shown in FIG. In FIG. 23, # is 1 when the modulated data before the synchronization code is terminated at 0000 or 00, and is 0 otherwise.

[BCA]
The arrangement of the BCA shown in FIG. 10 is a plan view seen from above the optical disk 2401 and is shown in FIG. A burst cutting area (BCA) 2402 is formed concentrically in a range from a radius of 21.3 mm to 22.0 mm of the optical disc 2401. Reference numeral 2403 denotes a center hole. The BCA stores information unique to the disk such as a disk ID or format information to which the disk conforms. Such information occupies 4648 channel bits, while one round is approximately 4750 channel bits.

A modulation method of data recorded in the burst cutting area 2402 is shown in FIG. In this modulation method, 2-bit data is modulated as 7-bit data. The 7-bit data after modulation is configured such that the first 3 bits are a sync portion and the last 4 bits are a data portion. The synchronization unit is composed only of "010". In the data part, "1" is set to any one of four bits, and the other bits are set to "0". In FIG. 25, if the original data is "00", the data part is modulated as "1000". Similarly, the original data "01", "10" and "11" are modulated as data parts "0100", "0010" and "0001", respectively.

A state in which the synchronization part and the data part are recorded in the burst cutting area 2402 is schematically shown in FIG. In this case, data of "0101000" is shown. In the case of bit "1", a low reflectance portion is formed. In the case of the bit "0", this low reflectance portion is not formed, and the change in the disk reflectance is almost zero.

The data structure recorded in the burst cutting area 2402 is shown in FIG. In FIG. 27, each row is composed of 5 bytes. The first 1 byte of each row is a sync byte, and the last 4 bytes are data.

The first line is a preamble, which is all 00h.

Since the first synchronization byte is used only for the first line, it is possible to detect the start position of the BCA code by detecting this. Alternatively, it is possible to detect together with 00h data after the first synchronization byte. In the second to thirty-third lines, the area is divided in units of four lines. In the second to fifth lines, 16-byte data of user data I0,0 to I0,15 are arranged. Subsequently, in the sixth to ninth lines, 16-byte parity C0,0 to C0,15 corresponding to user data I0,0 to I0,15 in the second to fifth lines. Is placed. One ECC block is configured by the user data of the second to fifth lines and the parity of the sixth to ninth lines.

Similarly, user data I1,0 to I1,15 are arranged in the tenth to thirteenth rows, and parities C1,0 to C1,15 corresponding to the fourteenth to seventeenth rows are arranged. Ru. User data I2, 0 to I2, 15 are arranged on the 18th to 21st lines, and parity C2, 0 to C2, 15 corresponding to the 22nd to 25th lines are arranged. User data I3, 0 to I3, 15 are arranged on the 26th to 29th lines, and parity C3, 0 to C3, 15 corresponding to the 30th to 33rd lines are arranged.

The synchronization bytes in the second to fifth lines are SB00. The synchronization byte from the sixth line to the ninth line is SB01. The synchronization byte from the 10th line to the 13th line is SB02. The synchronization byte from the 14th line to the 17th line is SB03. The synchronization byte from the 18th line to the 21st line is SB10. The synchronization byte from the 22nd line to the 25th line is SB11. The synchronization byte from the 26th line to the 29th line is SB12. The synchronization byte from the 30th line to the 33rd line is SB13. No data is placed on the 34th line, and only SB 32 of the synchronization byte is placed. Data in FIG. 27 shows data before being modulated according to the modulation scheme in FIG. The amount of data is 166 bytes. (= 5 bytes × 4 rows × 8 sets + 5 bytes + 1 byte) As a result of this information being modulated, there are 4648 channel bits. (= 166 x 8 x 7/2)

A specific data string of the synchronization signal of FIG. 27 is shown in FIG. The example of FIG. 28 is represented as a channel bit string after modulation. The synchronization byte of 28 channel bits comprises a sync body of 14 channel bits and a sync ID of 14 channel bits. The sync body of 14 channel bits is composed of a sync body 1 of 7 channel bits and a sync body 2 of 7 channel bits. The sync ID of 14 channel bits is formed of a sync ID 1 of 7 channel bits and a sync ID 2 of 7 channel bits.

The sink body has a pattern that does not follow the original modulation rule described above. That is, as shown in FIG. 25, according to the present modulation rule, the synchronization part should be "010". However, the synchronization portion of the sync body 2 is "001" different from "010". Thus, it is possible to identify synchronization bytes from the data.

The sync body 1 of each synchronization byte is set to "010 0001", and the sync body 2 is set to "001 0100". On the other hand, the sync ID is a different value for each synchronization byte, which makes it possible to identify the synchronization byte. In this way, each synchronization byte is different, so that identification is possible.

The configuration of the ECC block of the BCA code is shown in FIG. As the ECC, Reed Solomon code of RS (248, 216, 33) is used. This is a Reed Solomon code similar to the ECC block of FIG. However, in the ECC block of the BCA code, as shown in FIG. 29, the first 200 bytes are fixed data, and, for example, FFh is used. The 16-byte data following the fixed data is substantially used as BCA user data. Using 200 bytes of fixed data and 16 bytes of BCA data, 36 bytes of parity are calculated.

The first 200 bytes of the 216-byte data in the present invention are fixed data and are not recorded on the optical disc. Similarly, among the 32 bytes of parity, only the first 16 bytes of parity C0 to C15 are recorded on the optical disc 1, and the remaining 16 bytes of parity are not recorded. At the time of decoding, the same value is used as fixed data of 200 bytes. Also, 16-byte parity not recorded is decoded as an erasure flag. That is, of the 32-byte parity, the latter 16 bytes are processed as if the located parity was lost. Even if one half of the parity is lost, the original parity can be decoded because its position is known.

As described above, by using the same RS (248, 216, 33) as the ECC of the user data recorded in the user data area, a very strong error correction capability can be realized also in the BCA. Further, since the configuration with the same hardware is possible, the circuit scale can be reduced and the cost can be reduced. Furthermore, only 32 bytes need to be recorded, and the data capacity can be increased as compared to the case where all 248 bytes are recorded.

Next, FIG. 30 shows the configuration of the data block of BCA. In the present invention, four ECC blocks are recorded in the burst cutting area 2402. The 16-byte data of each ECC block is composed of the leading 1-byte content code and the subsequent 15-byte content data. In the content code of BCA, six bits from the first bit 7 to bit 2 are set as an application ID, and two bits of the last bit 1 and bit 0 are set as a sequence number.

The optical disk recording and reproducing apparatus can record or reproduce data only on an optical disk having an agreed application ID. For example, it is possible to record content encryption / decryption key information and the like necessary for protecting content data on a disc having a specific application ID.

The sequence number is composed of 2 bits and is any one of "00", "01", "10" and "11". When the content data of each ECC block is 14 bytes or less, each sequence number is set to "00".

Next, a method of storing content data is shown. For example, when the same content data is stored as the content data of the first two ECC blocks among the four ECC blocks (in this case, double writing of the same content data of the same application ID), The sequence number of each ECC block is "00". That is, when the same content data is recorded, the sequence numbers of the two ECC blocks are the same.

Subsequently, when storing 24 bytes of content data different from the application ID of the first ECC block in the remaining two ECC blocks, the first sequence number is “00”, and the sequence of the second ECC block is stored. The number is "01". That is, when straddling a plurality of ECC blocks, serial numbers are stored.

As described above, since the application ID and the sequence number are recorded in each ECC block, it is determined from them whether the desired data is stored in which ECC block or the multiple writing is performed. It is possible.

The BCA content code and content data of the data block in FIG. 30 correspond to I0,0 to I0,15 in the first ECC block in FIG.

[Disk recording and playback device]
The recording and reproducing apparatus for performing the reproduction of the reproduction-only disc described in the form, the data encoding process, and the BCA suitable for the present invention and the recording and reproduction of the recordable disc having a substantially common format with the reproduction-only disc is described Use it. Further, the recording and reproducing apparatus shown in FIG. 31 corresponds to the optical disc recording and reproducing unit of the disc copying apparatus shown in FIG. FIG. 31 is a block diagram of a recording and reproducing apparatus. In FIG. 31, 3100 is a read-only disc shown in FIGS. 8, 9, 10, or a recordable disc having a substantially common shape. Reference numeral 3101 denotes a disk motor for rotating the disk 3100. Reference numeral 3102 denotes an optical pickup for irradiating the disk 3100 with a laser beam and detecting reflected light to obtain a reproduction signal. Further, at 3102, recording is performed by irradiating the disk 3100 with laser light of a waveform shaped properly at the time of recording. An analog front end 3103 performs waveform shaping of a signal detected by the optical pickup 3102 and generation of a servo signal. A demodulation processing circuit 3104 performs binarization of the waveform-shaped signal, demodulation processing based on 1-7 modulation described in the data encoding processing, and the like. Reference numeral 3105 denotes a dynamic random access memory (DRAM), which is used for temporary storage of data subjected to demodulation processing, during correction processing, input / output data, data before modulation processing, and the like. An error correction circuit (ECC) 3106 performs error correction processing on the demodulated data temporarily stored in the DRAM 3105 during reproduction processing, and an error for input data temporarily stored in the DRAM 3105 during recording processing. Add a correction code. An interface circuit 3107 outputs data temporarily stored in the DRAM 105 from the output terminal 3114, stores input data from the input terminal 3113 in the DRAM 3105, and an output terminal 3115 of BCA related information stored in the DRAM 3105. Perform interface processing such as output from. 3113 and 3115 can also be shared. Moreover, it is also possible to share 3311, 3114, and 3115 by making them bidirectional. A modulation circuit 3108 performs modulation processing based on 1-7 modulation described in the data encoding processing for data read from the DRAM 3105 at the time of recording, and supplies the modulation data to an LDD (Laser Diode Driver) 3109. Do. During recording, the LDD 3109 supplies a recording waveform suitable for recording to the optical pickup 3102 for modulation data, and the pickup 3102 emits light in accordance with the recording waveform to perform recording. A BCA decoder 3110 decodes BCA data blocks recorded according to the presence or absence of low reflectance as described in [BCA] at the time of BCA reproduction.

[Backend]
The configuration of the back end unit in the optical disk recorder that handles the AV stream in the recording and reproducing apparatus in FIG. 31 will be described with reference to FIG. FIG. 32 is a block diagram of the back end processing unit. Also, this back end unit corresponds to the back end unit 105 of FIG.

An AV stream of application format is input via the input IF 3201 at the input terminal 3210 from the optical disc recording / reproducing apparatus or the input terminal 3211 from the HDD. The depacketizer 3202 converts the AV stream of the application format read from the recording medium 3100 of FIG. 31 or the HDD 104 of FIG. 1 into a stream that can be processed by the demultiplexer 3203. The demultiplexer 3203 outputs, to the AV decoder 3204, system information such as a video stream, an audio stream, and AV synchronization, which constitute a playback section (PlayItem) of the AV stream specified by the CPU 3209. The AV decoder 3204 decodes the video stream and the audio stream, and outputs a reproduction video signal and a reproduction audio signal from the corresponding

terminals

3217 and 3218, respectively.

The AV encoder 3205 encodes the video signal input from the input terminal 3219 and the audio signal input from the input terminal 3220, and multiplexes system information such as an encoded video stream, an encoded audio stream, and AV synchronization, etc. 3206. Output to The encoded video stream may be, for example, the Moving Picture Expert Group (MPEG) 2 system, H.264, or the like. The encoded audio stream is, for example, an audio stream encoded according to the MPEG1 system, an audio stream encoded according to the Dolby AC3 (trademark), or the like. The multiplexer 3206 multiplexes the input video and audio streams based on input system information, and outputs the multiplexed stream to the packetizer 3207. The multiplexed stream is, for example, an MPEG2 transport stream or an MPEG2 program stream. The source packetizer 19 encodes the input multiplexed stream into an AV stream composed of source packets in accordance with the application format of the recording medium 3100 of FIG. 31 in which the stream is recorded. The encoded AV stream is output from the output terminal 3224 to the optical disc recording / reproducing apparatus or the output terminal 3225 to the HDD via the output IF 3208.

The BCA information and BCA Type information are input from the input terminal 3212 and sent to the CPU 3209 via the input IF 3201, and the CPU 3209 separates the BCA Type information from the BCA information, and via the output IF 3208, the BCA information via the signal line 3225, BCA Type information is output from the output terminal 3226.

101 home recorder 102 copy management device 103 optical disc recording / reproducing unit 105 back end unit 107 copy controller 109 BCA type determination unit 110 copy permission determination unit

Claims

A copy management apparatus for controlling copying of content from an optical disc, comprising:
A copy management apparatus comprising means for switching processing of copy permission depending on whether the identification information of the optical disc is identification information including solid identification information or identification information not including solid identification information.
When the identification information includes solid identification information, the copy permission process according to claim 1 selects the copy permission processing including a free copy, and the identification information does not include solid identification information. A copy management apparatus characterized by selecting a copy permission process not including free copy.
A copying apparatus for copying content from an optical disc, comprising:
An optical disc characterized by comprising means for transmitting type information of identification information indicating whether the identification information of the optical disc is identification information including solid identification information or identification information not including solid identification information; Recording and playback device.
4. The optical disc recording and reproducing apparatus according to claim 3, wherein the identification information is recorded in BCA of the optical disc.
The identification information according to claim 3 and type information of identification information indicating whether the identification information is identification information including solid identification information or identification information not including solid identification information An optical disc recording and reproducing apparatus characterized in that it is recorded.
It is an optical disc for playback only,
What is claimed is: 1. A read-only optical disc characterized in that type information indicating identification information including solid identification information or identification information not including solid identification information is recorded in the BCA together with the identification information.
7. The read-only optical disc according to claim 6, wherein the type information is recorded in BCA using a recording area of manufacturer identification information.
A copy management method for managing copying of content from an optical disc, comprising:
A copy management method characterized in that processing of copy permission is switched depending on whether identification information of the optical disc is identification information including solid identification information or identification information not including solid identification information.
The switching of the process of copy permission according to claim 8 is such that when the identification information includes solid identification information, a copy permission process including a free copy is selected, and the identification information does not include solid identification information. A copy control method comprising selecting a copy permission process which does not include free copy.