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:
Mar. 05, 1996
Filed:
Nov. 22, 1993
Seiichi Mita, Kanagawa, JP;
Toru Kawashima, Fujisawa, JP;
Masanori Matsuzaki, Chigasaki, JP;
Toshimitsu Kaku, Sagamihara, JP;
Hiroyuki Tsuchinaga, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Video and Information System, Inc., Kanagawa, JP;
Abstract
An information reproducing apparatus is capable of stably and correctly binarizing a signal reproduced from a recording medium, such as an optical disk, even if the reproduced signal contains a fluctuation of its low frequency component. The reproduced signal is replaced by an AC signal in a period other than a period during which the reproduced signal is to be demodulated so that DC fluctuation of the reproduced signal is reduced to thereby stably and correctly binarize the reproduced signal.