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. 11, 2012
Filed:
Dec. 20, 2010
Yingxuan LI, Saratoga, CA (US);
Fu-tai an, San Jose, CA (US);
Yonghua Song, Cupertino, CA (US);
Marvell International, Ltd., Hamilton, BM;
Abstract
In an apparatus for conditioning a signal from an optical pickup unit (OPU), a single-ended channel includes a first signal processing block to calibrate a dark level of a single-ended signal corresponding to a single-ended output of the OPU, if any, and to center the single-ended signal. A dual-ended channel includes a second signal processing block to calibrate a dark level of a dual-ended signal corresponding to a dual-ended output of the OPU, if any, and to center the dual-ended signal. A multiplexer selects one of the single-ended channel and the dual-ended channel, and outputs a selected signal. A digital signal processing stage converts the selected signal to a digital signal.