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. 26, 2011
Filed:
Feb. 05, 2009
Applicant:
James B. Boomer, Monument, CO (US);
Inventor:
James B. Boomer, Monument, CO (US);
Assignee:
Fairchild Semiconductor Corporation, South Portland, ME (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 23/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit is described that detects high and low frequencies and additional clock frequencies and outputs a signal that indicates a high, a low frequency or an additional mode. When in the low frequency low frequency mode signals are regenerated free of any high frequency signals from appearing on the filtered low frequency clock line. The rising and falling edges of the input clock are low pass filtered separately and then combined to generate a low frequency clock or the additional input clock and that retains the input clock pulse width and duty cycle.