Abstract: A recording medium comprises an IC chip including circuitry configured to record data of one or more kinds of software, transmit and receive information to and from an external apparatus without contacting the external apparatus, and communicate with the external apparatus and execute mutual authentication processing for permitting access to the recorded information. The data recorded on the circuitry includes identification information for respective kinds of software recorded on a recording surface of the recording medium, key information necessary for installation of the respective kinds of software, and usage control information indicating a number of installations available for installation of the respective kinds of software. The key information is readout to the external apparatus and the usage information is rewritten by the external apparatus only when mutual authentication is correctly performed between the IC chip and the external apparatus.

Abstract: An information processing device includes: a usage permission requesting unit configured to read out data from an IC chip in which the usage control information of a disc recorded content to confirm the validity of the usage control information; and a usage execution unit configured to perform usage of the disc recorded content in accordance with a usage permission mode recorded in the usage control information on condition that the validity of the usage control information has been confirmed by the usage permission requesting unit.

Abstract: An information processing apparatus includes a communication unit that transmits and receives information to and from an IC chip of a recording medium, an authentication processing unit that executes mutual authentication processing with the IC chip, a list-display-screen outputting unit that reads identification information and usage control information and causes a display to display a list display screen, a selection input unit that receives a selection input from a user, a software reading unit that reads data of software selected according to selection input from the data area, an installation processing unit that causes the authentication processing unit to execute the authentication processing, reads key information necessary for installing the software, and executes installation processing for the software, and a usage-control-information updating unit that accesses the IC chip and updates the usage control information corresponding to the software.

Abstract: An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are calculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus, the error correction capability in a burst cutting area of an optical disc can be improved.

Abstract: An information processing apparatus includes a communication unit that transmits and receives information to and from an IC chip of a recording medium, an authentication processing unit that executes mutual authentication processing with the IC chip, a list-display-screen outputting unit that reads identification information and usage control information and causes a display to display a list display screen, a selection input unit that receives a selection input from a user, a software reading unit that reads data of software selected according to selection input from the data area, an installation processing unit that causes the authentication processing unit to execute the authentication processing, reads key information necessary for installing the software, and executes installation processing for the software, and a usage-control-information updating unit that accesses the IC chip and updates the usage control information corresponding to the software.

Abstract: A recording system and method, a recording apparatus and method, an input device and method, a playback system and method, a playback apparatus and method, a recording medium, and a program in which content can be flexibly protected according to whether the content should be protected. When mutual authentication is conducted with an AV board by a mutual authentication unit and when the content input into the mutual authentication unit is encrypted with a common key, an input/output controller determines that the content to be input via a bus is to be protected on the bus. The input/output controller then controls a recording/playback processor to generate protection information, indicating that the content is to be protected on the bus, and records the generated protection information on an optical disc together with the content.

Abstract: First data representing user data and third data use the same error correction codes. The first data has a first error correction block structure and the third data has a second error correction block structure. That is to say, the first data and the third data have their respective error correction block structures proper for them. In particular, the recording density of the third data is made less dense than the recording density of the first data, and the number of correction codes in the first error-correction block is set at a multiple of m whereas the number of correction codes in the second error-correction block is set at n/m times the number of correction codes in the first error-correction block so that a data-piece count in the second error-correction block is also n/m times a data-piece count in the first error-correction block. As a result, it is possible to provide a good technique of recording shipping-time information onto a high-recording-density disc.

Abstract: Four ECC blocks are recorded in a burst cutting area of an optical disc. Each ECC block is constituted by a BCA content code of 1 byte, content data length of 1 byte, and content data of 14 bytes. Of the BCA content data, the leading 6 bits are used for application ID and the remaining 2 bits are used for block number. Disc ID is stored in the content data. Since the four ECC blocks exist, the optical disc can be managed individually by four applications at the maximum. Thus it becomes possible to manage the same optical disc by a plurality of applications.

Abstract: An information processing apparatus includes an authentication section that executes authentication with a first recording medium, and a decryption section that executes decryption of encrypted data stored on a second recording medium. The decryption section acquires data stored on the first recording medium on the condition that authentication with the first recording medium is established, and performs decryption of encrypted data recorded on the second recording medium by using the acquired data.

Abstract: A recording medium for recording information, a recording apparatus and a recording method, and a reproduction apparatus and a reproduction method. The recording medium includes: a first area for recording contents data of the recording medium by a predetermined code; a second area other than the first area; wherein the second area includes a block with added 16-byte parity into medium ID information, wherein the block is written multiply.

Abstract: A recording medium is disclosed. In the recording medium, address information is recorded in advance, one bit of the address information recorded is represented by a modulated wobble signal obtained by modulating each of a predetermined number of modulation unit sections of a wobble waveform, and a groove is formed in association with the modulated wobble signal, wherein, in converting the one bit of the address information into a chip sequence in which a predetermined number of chips continue, the modulated wobble signal is adapted such that a code sequence is inverted when the one bit is a first value and is not inverted when the one bit is a second value, and the modulated wobble signal is generated by modulating a wobble waveform in a modulation unit section according to a value of each of the chips of the chip sequence.

Abstract: A data-arranging method similar to that of a RAM disk is adopted for a ROM disk to make the ROM disk highly compatible with the RAM disk. According to this method, buffer areas are allocated as a data run-in and a data run-out respectively preceding and succeeding a RUB (Recording Unit Block) used as a recording/reproduction unit. In addition, at locations separated from each other in the buffer areas by a distance equal in length to a sync-data gap in successive frames in the RUB, pieces of sync data (SA) are provided so that the sync data always appears at equal intervals in a signal reproduced from the ROM disk, providing a feature advantageous to establishment and protection of synchronization. It is thus possible to implement a ROM disk that is highly compatible with the RAM disk and advantageous to a synchronization system.

Abstract: An ECC block is constituted by RS(248, 216, 33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are calculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus, the error correction capability in a burst cutting area of an optical disc can be improved.

Abstract: The present invention is directed to a data recordable optical disc (2), wherein buffer areas for random access (Data Run-in DRi, Data Run-out DRo) for random access are respectively disposed before and after respective blocks (BLK, BLK1, BLK2), whereby when recording of new block is started, the block is recorded in the state where respective buffer areas overlap with each other with respect to new block and existing block so that no gap takes place. Signal patterns for Phase Locked Loop (PLL) at the time of data reproduction, Auto Gain Control (AGC), and automatic adjustment of light source power, synchronization pattern, and/or signal patterns used for generation of reproduction clock, and detection of block reproduction end, etc. are recorded within the buffer area.

Abstract: Four ECC blocks are recorded in a burst cutting area of an optical disc. Each ECC block is constituted by a BCA content code of 1 byte, content data length of 1 byte, and content data of 14 bytes. Of the BCA content data, the leading 6 bits are used for application ID and the remaining 2 bits are used for block number. Disc ID is stored in the content data. Since the four ECC blocks exist, the optical disc can be managed individually by four applications at the maximum. Thus it becomes possible to manage the same optical disc by a plurality of applications.

Abstract: An information processing device includes: a usage permission requesting unit configured to read out data from an IC chip in which the usage control information of a disc recorded content to confirm the validity of the usage control information; and a usage execution unit configured to perform usage of the disc recorded content in accordance with a usage permission mode recorded in the usage control information on condition that the validity of the usage control information has been confirmed by the usage permission requesting unit.

Abstract: An ECC block is constituted by RS(248,216,33). Of a data length of 216 bytes (symbols), only 16 bytes are allocated to BCA data and the remaining 200 bytes are used for fixed data having a predetermined value. Using the fixed data of 200 bytes and the BCA data of 16 bytes, parities of 32 bytes (symbols) are caculated. Only the BCA data of 16 bytes and the parities of the former 16 bytes of the 32-byte parities, that is, a total of 32 bytes only, are recorded in a burst cutting area of an optical disc. In decoding, error correction processing is carried out by using the fixed data of 200 bytes. The unrecorded parities of 16 bytes are processed as having been erased. Thus the error correction capability in a burst cutting area of an optical disc can be improved.

Abstract: First data representing user data and third data use the same error correction codes. The first data has a first error correction block structure and the third data has a second error correction block structure. That is to say, the first data and the third data have their respective error correction block structures proper for them. In particular, the recording density of the third data is made less dense than the recording density of the first data, and the number of correction codes in the first error-correction block is set at a multiple of m whereas the number of correction codes in the second error-correction block is set at n/m times the number of correction codes in the first error-correction block so that a data-piece count in the second error-correction block is also n/m times a data-piece count in the first error-correction block. As a result, it is possible to provide a good technique of recording shipping-time information onto a high-recording-density disc.

Abstract: An information processing apparatus includes a data reading unit that reads a media identifier unique to a disc from an integrated-circuit chip included in the disc, a copy permission request unit that transmits data to a management server, the data including the media identifier read by the data reading unit, and a copy execution unit that, on condition of receipt of copy permission information from the management server, reads content recorded on the disc and executes a process of copying and recording the content to a data recording medium different from the disc.

Abstract: Disclosed is a disk-like recording medium, a disk recording apparatus and a disk recording method, and a disk playback apparatus and a disk playback method. Disk ID is recorded over a circle of a burst cutting area on an optical disk. The circle is divided into n blocks, each of the blocks is divided into m frames, and ID information is recorded in each of the frames with k channel bits.