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:
Sep. 19, 2006
Filed:
Dec. 07, 2004
Robert Pelt, San Jose, CA (US);
Robert Pelt, San Jose, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
A polyphase numerically controlled oscillator (PNCO) is defined to include a plurality of sub-numerically controller oscillators (SNCO's). Each SNCO is capable of receiving a clock signal at a first clock rate and an assigned phase offset signal. Each SNCO is configured to generate a digital waveform for the assigned phase offset signal. The PNCO also includes a plurality of frequency multipliers for generating a frequency multiplied representation of the digital waveform generated by each SNCO. The PNCO further includes a multiplexer configured to receive output from each of the frequency multipliers according to the first clock rate. The multiplexer is further configured to receive a select signal, wherein the select signal triggers the multiplexer at a second clock rate.