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:
Sep. 02, 2003
Filed:
Mar. 14, 2000
Hidenori Maruyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An equalizer with a phase-locked loop comprising: a phase rotator which rotates a phase of a received signal to output a rotated signal; an impulse response detector which detects impulse responses of a transmission line through which the received signal has been transmitted on the basis of the rotated signal; a first region designator which designates a first region on the basis of the impulse responses; a second region designator which designates a second region on the basis of the impulse responses; an equalizer which estimates a sequence on the basis of the rotated signal by using the impulse responses in the first region; a replica generator which generates a replica of the received signal on the basis of the sequence by using the impulse responses in the second region; a phase detector which detects a phase difference between the replica and the rotated signal; and a circuit for controlling the phase rotator on the basis of the phase difference to decrease the phase difference.