Evaluation apparatus, evaluation method, and program

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United States of America Patent

PATENT NO 8121008
APP PUB NO 20090122676A1
SERIAL NO

12264384

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Abstract

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An evaluation apparatus obtains an evaluation value of a signal read from an optical recording medium includes a reading device reading a signal recorded on the optical recording medium. Edge positions are detected of the read signal acquired by the reading device. A frequency distribution table is generated of the edge positions on the basis of an accumulation result of information of the edge positions detected by the edge position detection device. A first calculation of a T degree value is represented as [{.SIGMA.fi.times.(xi-A).sup.(2m+1)}/F].sup.{1/(2m+1)} Formula 1 (wherein m is a natural number excluding zero) The variables xi, fi, F, and A represent the value of each of the classes, the frequency of each of the classes, the sum of the frequencies, and the weighted average value, respectively.

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Patent Owner(s)

Patent OwnerAddress
SONY DISC & DIGITAL SOLUTIONS INC7-35 KITASHINAGAWA 6-CHOME SHINAGAWA-KU TOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tanizawa, Seiji Kanagawa, JP 13 132

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