The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2005
Filed:
Dec. 21, 2004
Hideyuki Yamakawa, Kawasaki, JP;
Koichi Otake, Yokohama, JP;
Yukiyasu Tatsuzawa, Yokohama, JP;
Hiroyuki Moro, Ome, JP;
Toshihiko Kaneshige, Yokohama, JP;
Hideyuki Yamakawa, Kawasaki, JP;
Koichi Otake, Yokohama, JP;
Yukiyasu Tatsuzawa, Yokohama, JP;
Hiroyuki Moro, Ome, JP;
Toshihiko Kaneshige, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A disk apparatus has a reading unit which reads reflection light from a disk and outputting a read signal, an identifying unit which identifies whether the read signal has been modified in accordance with a first modulation rule or has been modulated in accordance with a second modulation rule and outputs an identification signal, an equalizing unit which applies a waveform equalizing process to the read signal, and a decoding unit which carries out likelihood decoding of the waveform equalized read signal according to the modulation rule indicated by the identification signal from the identifying unit, and outputs a reproduction signal.