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:
Apr. 18, 2000
Filed:
Mar. 06, 1998
Jizoo Lin, Hsinchu, TW;
Winbond Electronics Corp., Hsinchu, TW;
Abstract
An analog signal offset cancellation circuit comprising a front end device, a comparator, a sampling device, a resampling clock generator and a recovery data generator is disclosed. In this offset cancellation circuit, the front end device receives an input analog signal. The comparator then compares the input analog signal with a threshold voltage to obtain an output binary signal. The sampling device samples the output binary signal by a sampling signal having a frequency N times that of the output binary signal to obtain sample data. The resampling clock generator then continually reads 2N samples of the sample data and outputs a two period resampling clock with its rising and falling edges determined by the edges and the number of uninterrupted logic one samples of the 2N samples. The resampling clock remains unchanged when the 2N samples are all logic one or all logic zero. The recovery data generator then samples the output binary signal using the resampling clock to obtain recovery data.