G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/00 (2006.01) G11B 7/0045 (2006.01) G11B 7/005 (2006.01) G11B 7/013 (2006.01) G11B 7/09 (2006.01) G11B 20/10 (2006.01)
Patent
CA 2108359
63 ABSTRACT OF THE DISCLOSURE In an information recording medium from which information recorded on each pit is reproduced by an optical detection system that obtains a reproduced signal corresponding to each pit by scanning the information recording medium along pit rows by a light beam, data of high recording density can be accurately reproduced by a simple arrangement by shifting in a step-wise fashion edge positions of an information pit from a predetermined reference position in response to digital information to be recorded within a range corresponding to a predetermined shift period smaller than a transition period of a reproduced signal determined in response to a transfer, characteristic of the optical detection system. Therefore, a nonlinear intersymbol interference can be reduced without emphasizing a noise component.
Kobayashi Seiji
Okamura Hiroshige
Yamatsu Hisayuki
Gowling Lafleur Henderson Llp
Sony Corporation
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