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. 19, 1994
Filed:
Sep. 14, 1992
Yuzo Kurokami, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a decision-feedback equalizer for use in combination with a demodulator (13) to equalize a demodulated signal into an equalized signal through a transversal filter (15), the transversal filter filters the demodulated signal into a filtered signal in accordance with a plurality of controllable tap gains. The filtered signal is processed into the equalized signal on the basis of the binary level of the filtered signal. The controllable tap gains are produced dependent on the demodulated and the equalized signal and a plurality of parameters. A delivering circuit (38) delivers limiting values as the parameters to the transversal filter when the demodulator is put in a synchronization state. The delivering circuit delivers additional values as the parameters to the transversal filter when the demodulator is put out of the synchronization state.