摘要:
A recording device (200) is provided with a recording means (352) for recording, in a recording medium (100), recording data which include real time data (121), a fixed quantity of which is continuously recorded, and management data (122) for managing at least recording or reproduction of the real time data; a verifying means (354) for verifying whether the recording data is correctly recorded or not; and a first control means (354) for controlling the verifying means to selectively verify whether the management data, among the recorded recording data, is correctly recorded or not.
摘要:
An information detecting apparatus which can surely detect specific information such as a digital watermark in high-speed data stream and can be configured at low cost. The apparatus extracts data including specific information from a high-speed data stream, and detects the specific information in the extracted data at low speed.
摘要:
A recording medium capable of preventing recording quality from deteriorating due to repeated overwriting is provided. Content information recording regions that represent desired content information and sync code recording regions that represent sync codes synchronized with each other during the reading of the content information including sync detectors defined by at least two kinds of patterns are formed in an overwritable recording medium to thus record the content information.
摘要:
A recording medium capable of preventing recording quality from deteriorating due to repeated overwriting is provided. Recording marks and spaces which are formed based on recording information generated by combining desired content information and additional information that changes whenever the content information is recorded in an overwritable recording medium to thus record the content information.
摘要:
An information recording apparatus recording disc structure definition information defining a structure of an optical disc, in management areas of the optical disc including a data area and the management areas positioned on inner and outer periphery sides of the data area, includes: a memory which stores disc structure definition information of a new version including an invalid mark which cannot be interpreted as the disc structure definition information by an information reproducing apparatus and an information recording/reproducing apparatus being non-adaptive; and a recording control element for, when the disc structure definition information of the new version is recorded in the management areas, controlling recording of the disc structure definition information of the new version so the invalid mark is positioned at a position in the management areas in which all or part of disc structure definition information of an old version without the invalid mark needs to be recorded.
摘要:
An information recording medium (100) of the present invention has a plurality of recording layers (110, 120, 130, and 140) for recording therein data. Each of the plurality of recording layers corresponds to one of a plurality of recording formats. A first recording layer number (SLN) assigned with each of the recording layers in accordance with a disposed position of each of the recording layer and a second recording layer number (LLN) assigned with corresponding recording format are included in the address area (14) for the data, with respect to each of the plurality of recording layer.
摘要:
An information recording medium (100) is provided with a plurality of recording layers (110, 120, 130, and 140) for recording data, wherein each of the plurality of recording layers corresponds to one of a plurality of record formats, and a first recording layer number (SLN) assigned to each of the plurality of recording layers in accordance with the positions in which the recording layers are arranged, and a second recording layer number (LLN) assigned for each of the corresponding record formats are included in an address area (14) of the data.
摘要:
An information recording/reproducing device, wherein a power management mechanism for a serial ATA interface connecting between an optical disk drive and a host computer has a steady-state power mode (PHYRDY) and a power-saving mode (Partial state, Slumber state) to keep power consumption lower than the steady-state power mode, while a power management mechanism built into the optical disk drive has a steady-state power mode (active state) and a power-saving mode (inactive mode) to keep power consumption lower than the steady-state power mode. The optical disk drive controls transition of the power consumption modes of the power management mechanism for a serial ATA interface in accordance with current power consumption mode of its internal power management mechanism.
摘要:
An information recording medium (1) includes a recording area (12) in which a content (122) which is encrypted by an encryption key in a first encryption system and first key information (121) for obtaining the encryption key by a second encryption system that is different from the first encryption system are recorded and a control information area (11) in which second key information (112) for obtaining the encryption key by at least first encryption system and a flag (111) for deciding which system is to be used, either the first encryption system or the second encryption system, are recorded. At the time of reproduction, when the encryption key is obtained by the system decided by the flag and the content is reproduced, the content can be properly protected while keeping compatibility with the existing content protection technology.
摘要:
An optical disc capable of repeated recording, such as a DVD−RW, is applicable. An information recording and reproducing apparatus starts recording by making a sync pattern of recording data correspond to a recording reference position determined by an LPP formed on the disc at the time of recording new data on the disc. Afterward, the apparatus continues the recording by gradually shifting a position of the sync pattern of the recording data with respect to the recording reference position, and performs the recording with a shift quantity fixed to the predetermined shift quantity when the shift quantity thereof reaches a quantity equal to or larger than a predetermined quantity. Thereby, at a rewriting portion on the optical disc, the shift between recorded data and a recording start position of recording data for rewriting can be small, and establishing synchronization at the time of reproducing or rewriting can be stably performed.