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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYoshiho Gotoh, Hiroshi Ueda, Yoshihisa Fukushima
Estimating the term…
The present invention relates to a method for recording an AV file using an information recording disk in which data is recorded/reproduced by sectors. The recording method includes the steps of: determining whether or not input data is AV data; detecting a defective sector existing in an assigned data recording area; when the input data is AV data while a defective sector is detected in the data recording area, allocating a defective extent including the defective sector; recording AV data in continuous sectors while skipping the defective extent; and allocating an area of continuous sectors where only the AV data is recorded as one AV extent.
A recording method for recording file management information and data including AV data on an information recording disk, wherein the file management information is for managing continuous sectors as an extent and for further managing one or more extents as a file by grouping one or more extents, the recording method comprising the steps of:
An information processing system, comprising:
An information recording disk on which file management information and data including AV data are recorded, wherein the file management information is for managing continuous sectors as an extent and for further managing one or more extents as a file by grouping one or more extents, wherein:
Dependencies are inferred from the claim text.
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Involving pulse code modulation of the colour picture signal components: involving data reduction
Signal processing not specific to the method of recording or reproducing; Circuits therefor: digital recording or reproducing
Error detection or correction; Testing , e.g. of drop-outs: by interleaving
Error detection or correction; Testing , e.g. of drop-outs: methods for assignment of alternate areas for defective areas
Term end not estimated
The present invention relates to an information recording disk for recording digital data including AV data, a recording method, a reproduction method and a recording apparatus therefor, and an information processing system thereof.
There are optical disks for recording information such as computer data, e.g., PDs. PD is a rewritable optical disk which employs the phase change system and performs recording and reproduction of data by sectors.
A problem associated with rewritable optical disks is that data recording and reproduction cannot be ensured for every sector due to dust attached to the disk, a scratch on the disk, deterioration of the disk material itself from repeated recording operations, or the like. Such a sector, from which data cannot be normally recorded/reproduced, is called a defective sector. Such a defective sector is typically replacement-recorded based on a linear replacement algorithm.
FIG. 1 is a flow chart illustrating a recording operation for AV data according to the present invention.
FIG. 2 is a flow chart illustrating a recording operation for an AV file including creation of file management information.
FIG. 3 is a diagram illustrating a data structure of a file and file management information.
(Embodiment 1)
Hereinafter, a rewritable optical disk, and a data recording method and a data reproduction method therefor will be described as an example of the present invention.
(1) Optical Disk