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. 08, 2005
Filed:
Apr. 01, 2002
Naoharu Yanagawa, Tokorozawa, JP;
Masahiro Kato, Tokorozawa, JP;
Tatsuhiro Yone, Tokorozawa, JP;
Yuko Muramatsu, Tokorozawa, JP;
Shinji Suzuki, Tokorozawa, JP;
Naoharu Yanagawa, Tokorozawa, JP;
Masahiro Kato, Tokorozawa, JP;
Tatsuhiro Yone, Tokorozawa, JP;
Yuko Muramatsu, Tokorozawa, JP;
Shinji Suzuki, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An optically recorded information recording and/or reading apparatus which eliminates the influence of stray light occurring within an optical system. In a state or a focus state which is forcedly set to position a reading point outside the outermost periphery of a disk surface, and the signal level is adjusted in a signal combiner circuit such that a light receiving level at that time matches a desired level.