摘要:
At least a portion of groove tracks in a information-data recording region of an optical recording medium comprises a plurality of groove portions separated by groove-absent portions in a rotational direction of the optical recording medium, each of the mark portions or each of the space portions includes one of the groove-absent portions. At least one of two groove tracks adjacent to prepit train, which is formed in land tracks, has a continuous groove portion or a groove-absent portion extending at least from a leading end to a trailing end of at least one prepit included in the prepit train in a rotational direction of the optical recording medium. The frequency band for separation of the groove tracks includes at least a portion of a frequency band of a modulated recording signal for recording information data on the optical recording medium.
摘要:
An apparatus for recording information on a recordable optical disc by applying a light beam on the surface thereof, the disc includes a first recording area on which information is recorded and reproduced while the disc is rotated at a first linear velocity; and a second recording area on which information is recorded and reproduced while the disc is rotated at a second linear velocity. The first recording area includes a test recording area. The apparatus includes recording power determining unit for determining first optimum recording power for recording information on the first area by a test recording utilizing the test recording area, and for determining second optimum recording power for recording information on the second area by multiplying the first optimum recording power by a predetermined constant.
摘要:
An information recording apparatus (200) is provided with: a recording device (353) for recording data onto an information recording medium (100) being provided with a first recording layer (L0) and a second recording layer (L1); a first controlling device (354) for controlling the recording device to record the data into each of the first recording layer and the second recording layer; a forming device (354) for forming a compatibility area (106, 109, 116, 119) for realizing reproduction compatibility of the information recording medium on an information recording apparatus, following the data recorded in each of the first recording layer and the second recording layer; and a second controlling device (354) for controlling the recording device to record the data into the formed compatibility area if the data is recorded after the compatibility area is formed.
摘要:
An information recording medium is provided with: a recording layer (L0 layer, L1 layer) having one or a plurality of predetermined recording areas (CDZ, 101 and the like) in which record data including buffer data in a finalizing process can be recorded; and a management area (CDZ) in which the management information (50a) can be recorded, the management information including first identification information (51a) for identifying whether or not embossed pits are formed in the predetermined recording area.
摘要:
An optical disk (100) comprises recording management areas (103, 113) in which record management data for managing data recording is recorded. The record management data includes (i) physical position information (122, 125, 126) indicating the positions of physical buffer areas in which buffer data for buffering recording operation is physically recorded and (ii) logical position information (121) indicating the position of a logical buffer area in which buffer data is logically recorded or to be recorded.
摘要:
The present invention enables to limit playback of content recorded on a recording medium without fail. A playback system includes a recording medium 11 containing a plurality of pieces of actual data to play back a corresponding plurality of pieces of content, an information source 12 other than the recording medium 11, the information source containing at least one piece of playback control information among a plurality of pieces of playback control information required to play back the corresponding plurality of pieces of content, and a playback device that includes an acquiring unit 61 that acquires the playback control information from the information source 12, and a playback unit 61 and 62 that play back the content from the recording medium based on the playback control information acquired.
摘要:
An information recording apparatus is for recording user data and recording management data onto an information recording medium being provided with: a first recording layer; and a second recording layer, each of the first recording layer and the second recording layer having a user data area to record therein at least the user data and a recording management area to record therein at least the recording management data for managing recording of the user data, the information recording apparatus is provided with: a recording device for dividing the recording management area into a plurality of recording management segments and for recording the recording management data into at least one of the plurality of recording management segments; and a first controlling device for controlling the recording device to dispose each of the plurality of recording management segments in a single recording layer.
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.
摘要:
A recording medium includes a lead-in area which includes a control data area and an information data area in which information data is to be recorded. In this recording medium, a groove track in the control data area is divided into a plurality of mark portions and space portions based on a frequency band of a recording RF signal.
摘要:
A recording medium includes pairs of groove tracks and land tracks having periodically formed bent portion provided side by side on a substrate, a plurality of land prepits previously formed on the land tracks and carrying information about the groove tracks, and a recording layer formed on at least the groove tracks and the land tracks. The land prepits have a radius of mean curvature smaller than a radius of mean curvature of sides of the groove tracks in land-prepit absent regions of the land prepits and are defined by curved surfaces continuously extending from the sides of the groove tracks. Those sides of the groove tracks which face the continuous curved surfaces of the land prepits are curved surfaces that stricture the groove tracks. The depth of the land prepit is larger than that of the groove track.