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. 23, 2006
Filed:
Aug. 07, 2002
Applicants:
Jun Takasoh, Tokyo, JP;
Kimio Ueda, Tokyo, JP;
Inventors:
Jun Takasoh, Tokyo, JP;
Kimio Ueda, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D 3/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A half-rate clock and data recovery circuit includes a phase detector capable of operating at a half-rate, a charge pump circuit, a low pass filter, and a voltage controlled oscillator. The phase detector includes a selector circuit which receives uninverted and inverted signals from respective latches of the phase detector and an uninverted and inverted half-rate clock and outputs uninverted and inverted retimed signals supplied to the charge pump so that the charge pump produces a full-rate output in response to a half-rate input. The circuit provides greater operating margin.