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US 2002/0054555 A1Published application
Information storage apparatus and information reproducing method
AssigneeFujitsu Limited
InventorsYuji Karakawa, Shigenori Yanagi
Life of this patent
Estimating the term…
Abstract
There are provided an information storage apparatus and an information reproducing method capable of reading a mark without being disturbed by cross talk even if a track pitch is narrow. If reading a mark has failed in a region on an information storage medium, a recording state in a region adjacent to that region is changed to reduce cross talk (step S102), and thereafter reading of the mark is again executed (step S103).
Claims18
An information storage apparatus comprising:
- a mark reading section for reading a mark written on an information storage medium, said information storage medium which has a recording area divided into a plurality of regions, on which information is recorded by writing a mark, and from which information is reproduced by reading the recorded mark;
- and
- a recording state changing section for changing a recording state in an adjacent region situated next to a failed region from which said mark reading section fails to read a mark among a plurality of said regions so that cross talk caused due to said adjacent region can be reduced if said mark reading section fails to read said mark,
- said mark reading section again reading a mark in said failed region after changing a recording state in said adjacent region by said recording state changing section.
1 more element
An information reproducing method comprising:
- mark reading step of reading a mark written in an information storage medium, said information storage medium having a recording area divided into a plurality of regions, information being recorded by writing a mark in said region and reproduced by reading said mark;
- recording state changing step of changing a recording state in an adjacent region situated next to a failed region from which a mark fails to be read in said mark reading step among a plurality of said regions, if said mark reading step fails to read said mark, so that cross talk caused due to said adjacent region can be reduced;
- and
- mark rereading step of again reading said mark in said failed region after changing a recording state in said adjacent region in said recording state changing step.
1 more element
Dependencies are inferred from the claim text.