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:
Apr. 22, 2003
Filed:
Nov. 09, 1999
Applicant:
Inventors:
Assignee:
Cypress Semiconductor Corp., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/69 ; H03D 3/24 ; H03L 7/06 ;
U.S. Cl.
CPC ...
H04B 1/69 ; H03D 3/24 ; H03L 7/06 ;
Abstract
A spread spectrum clock generator comprising a spread spectrum modulation circuit and a control circuit. The spread spectrum modulation circuit may be configured to generate a clock signal in response to (i) a sequence of linearity ROM codes, (ii) a sequence of spread spectrum ROM codes, and (iii) a command signal. The control circuit may be configured to synchronize the command signal to a feedback signal. The sequence of linearity ROM codes and the sequence of spread spectrum ROM codes may be generated by predetermined mathematical formulas and optimized in accordance with predetermined criteria.