摘要:
According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm.
摘要:
According to one embodiment, a write-once type information storage medium comprises an organic dye based recording material having sensitivity at a wavelength of 405 nm and at a recording wavelength in the range of 600 nm to 700 nm, wherein, when absorbance of a maximum absorption wavelength in the vicinity of 405 nm is defined as 1, the absorbance is 5% or more at any wavelength in the range of 600 nm to 700 nm.
摘要:
There are provided an information storage medium capable of real-time recording/playback of digital moving picture information, and a digital information recording/playback system using this medium. In a medium that records/plays back data including video data and control information, the control information (DA21 in FIG. 4 ; RTR_VMG in FIG. 30 ) includes information (VOBU entry in FIG. 31 ) for accessing a specific portion (VOBU) of the video data.
摘要:
An information storage medium is designed to assure stable continuous recording without adverse effect, even when many defective areas are present on the information storage medium. To record information onto the information storage medium, a file unit is defined as a first unit. A contiguous data area unit to be treated as a continuous recording area is defined as a second unit. Furthermore, recording is done in the contiguous data area units and a collection of the contiguous data area units is organized into the file unit. In addition, an information recording place is provided in such a manner that the contiguous data area unit is so set that it extends over the recording area of another file already recorded on the information storage medium and a defective area on the information storage medium.
摘要:
A signal can be detected based on a level slice system and detection delay time can be reduced by setting the recording density of a header field (3, 8) in a linear direction lower (coarse) than that of a user data recording field (11). Further, a signal can be detected based on the level slice system and detection delay time can be reduced by using a mark position form having a large detection margin as an information recording system of the header field (3, 8). A readout error of a sector number due to a detection error is compensated for by recording address marks AM for attaining byte synchronization of the header field (3, 8) in both of a head portion and tail portion of information recorded in the header field (3, 8).
摘要:
In a DVD recording/playback system, a set top box STB (83) receives an MPEG transport stream constituted by a plurality of transport packets, and a formatter (90) extracts support information indicating if management information included in the transport packets includes predetermined items. A disc drive (51) that records data on a recording medium having a management area and data area records the support information in the management area.
摘要:
In this invention, an information recording/reproducing apparatus (1) has an authentication function and directly transfers information to an MPEG board (134), sub-picture run-length board (135), speech coding/decoding board (136) without using a main CPU (111). Thus, information transfer between the information recording/reproducing apparatus (1) and various processing boards (134, 135, 136) can be performed without using a main controller (111), the load of the main CPU (111) can be alleviated and the main CPU (111) can perform another process during the information transfer period.