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:
Jul. 08, 2003
Filed:
Apr. 05, 2000
Gene Sonu, San Jose, CA (US);
Oak Technology, Inc., Sunnyvale, CA (US);
Abstract
A Finite Impulse Response filter (FIR) reduces the effect of baseline wandering of the input signal on convergence. The FIR includes an adder, a DC-Insensitive error calculator, a DC-Insensitive coefficient calculator, and a multiplier. The adder adds a first tap signal to a second tap signal to produce a FIR output signal. The DC-Insensitive error calculator calculates from the FIR output signal an error value that converges to zero while the FIR output signal is subject to baseline wandering. The DC-Insensitive error calculator represents the error value via an error signal. The DC-Insensitive coefficient calculator calculates a coefficient value based upon the error signal and an input signal. The DC-Insensitive coefficient calculator forces the coefficient value to converge to a steady state value while the input signal is subject to baseline wandering. The coefficient value is represented by a coefficient signal. The multiplier multiplies the first input signal by the coefficient signal to produce the first tap signal.