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:
Oct. 28, 2008
Filed:
Mar. 19, 2004
William Llewellyn, San Jose, CA (US);
Ha Chu VU, San Jose, CA (US);
William Llewellyn, San Jose, CA (US);
Ha Chu Vu, San Jose, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A method and apparatus for spread spectrum clock generation is provided. Modulation of the clock signal may be accomplished with an N/N−1 clock divider. The N/N−1 clock divider is configured to divide the clock signal by N or N−1, depending on the carry output signal of an accumulator circuit. The accumulator circuit is configured to provide the carry output signal in response to a modulating waveform signal. The modulating waveform signal may be a triangle wave, a sinusoidal wave, another waveform appropriate for spread-spectrum clock generation, and the like.