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:
Nov. 05, 2013
Filed:
Dec. 18, 2012
Chih-chang Lin, San Jose, CA (US);
Chan-hong Chern, Palo Alto, CA (US);
Steven Swei, Fremont, CA (US);
Ming-chieh Huang, San Jose, CA (US);
Tien-chun Yang, San Jose, CA (US);
Chih-Chang Lin, San Jose, CA (US);
Chan-Hong Chern, Palo Alto, CA (US);
Steven Swei, Fremont, CA (US);
Ming-Chieh Huang, San Jose, CA (US);
Tien-Chun Yang, San Jose, CA (US);
Abstract
A method of operating a charge pump of a phase-lock assistant circuit includes determining a first relative timing relationship of a phase of a data signal to a phase of a first phase clock. A second relative timing relationship of the phase of the data signal to a phase of a second phase clock is determined, and the first and second phase clocks have a 45° phase difference. An up signal and a down signal are generated in response to the first relative timing relationship and the second relative timing relationship. The charge pump circuit is driven according to the up signal and the down signal.