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:
May. 27, 2003
Filed:
Nov. 05, 2001
Kouichi Yamaguchi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a phase difference signal generator, a first delay circuit has a delay time of nx where n ix 2, 3, . . . and x is a voluntary real number, the delay circuit receiving a first input clock signal having a phase of 0° to generate a first phase difference signal. At least one k-to-(n−k) weighted phase interpolator has a first input for receiving an output signal of said first delay circuit and a second input for receiving a second input clock signal having a phase of &thgr; to generate an output signal having a phase of (n−k)x+k&thgr;/n where k is 1, 2, . . . , n−1. At least one second delay circuit is connected to the k-to-(n−k) weighted phase interpolator. The second delay circuit has a delay time of kx to generate a k-th phase difference signal.