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. 12, 2005
Filed:
Dec. 10, 2003
Perry M. Wyatt, Fort Collins, CO (US);
Daniel A. Berkram, Fort Collins, CO (US);
David T. Newsome, Denver, CO (US);
Perry M. Wyatt, Fort Collins, CO (US);
Daniel A. Berkram, Fort Collins, CO (US);
David T. Newsome, Denver, CO (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A quadrature dock generating apparatus includes a clock generator providing a double clock having a frequency that is twice that of a received reference clock. Divider circuitry is coupled to provide an alignment signal having half the frequency of the double clock. A recovery circuit recovers a first clock and a second clock from the double clock in accordance with the alignment signal. The first and second clocks have substantially a 90° phase difference.