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. 12, 2006
Filed:
Sep. 28, 2001
Richard K. Karlquist, Cupertino, CA (US);
Richard K. Karlquist, Cupertino, CA (US);
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
A method and apparatus for synchronizing multiple-stage multiplexers are disclosed. According to exemplary embodiments of the present invention, multiplexer circuits in the multiple-stage multiplexer are synchronized based upon a frequency response of the output of the multiplexer. The power level of the output of the multiple-stage multiplexer is measured at a frequency corresponding to the input data rate of the multiple-stage multiplexer, during the time a test pattern is sent through the multiple-stage multiplexer. In an exemplary embodiment of the invention, the multiple-stage multiplexer is placed in substantially random states until the measured power level reaches the predetermined.