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:
Oct. 20, 1992
Filed:
Mar. 26, 1990
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A digital equalizer has a digital filter. The digital filter is supplied with a digital input signal which corresponds to a multiplex signal composed of a plurality of signal components that are different in amplitude or phase and have the same frequency, and effects a computational digital filtering process on the supplied digital input signal. The digital filter is connected to a feedback circuit. The feedback circuit compares an output signal from the digital filter with a predetermined reference value signal. The feedback circuit has a multiplier which multiplies the output signal from the digital filter by a coefficient signal corresponding to an error of the output signal with respect to the predetermined reference value signal. Based on an output signal from the multiplier, the feedback circuit controls the amplitude of the output signal from the digital filter so as to be constant.