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:
Mar. 28, 2000
Filed:
Jul. 13, 1998
Joseph D Linoff, San Jose, CA (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
The present invention provides a novel clock frequency divider that accepts an input clock having an input clock frequency and provides an output clock with an effective clock frequency of one of 1/N, 2/N, . . . , (N-1)/N, N/N times the input clock frequency, where N is an integer. The clock frequency divider of the present invention divides the input clock frequency asymmetrically by filtering out one or more of each N pulses on the input clock, as dictated by select signals. For example, in a clock frequency divider having N=8, a first clock output signal filters out one of each eight pulses, retaining seven pulses. Therefore, the effective frequency of the output clock signal is (N-1)/N, or 7/8, times the frequency of input clock signal. Similarly, a second output clock signal retains six of every eight pulses, a third retains five, and so forth.