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:
Jan. 31, 2006
Filed:
Apr. 23, 2001
Shigekazu Minechika, Osaka, JP;
Koichi Tada, Gifu, JP;
Junko Onaka, Osaka, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A disk reproducing apparatus includes a variable gain amplifier (VCA) (), and the VCA applies a radial push-pull signal including an address signal and an FCM leakage-in signal to a switch (). The switch outputs only the address signal to a peak-hold circuit () on the basis of an FCM mask signal from a mask signal generation circuit (). The peak-hold circuit generates a peak-hold signal of the address signal so as to be output to a DSP (), and the DSP controls a gain of the VCA on the basis of the peak-hold signal. Then, the radial push-pull signal in which the gain is controlled on the basis of the address signal is applied to an address detection circuit (), and the address signal is detected therein.