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. 24, 2006
Filed:
Jul. 19, 2002
Shin Chung Chen, Los Gatos, CA (US);
Roubik Gregorian, Saratoga, CA (US);
Mir Bahram Ghaderi, Cupertino, CA (US);
Vincent Sing Tso, Milpitas, CA (US);
Shin Chung Chen, Los Gatos, CA (US);
Roubik Gregorian, Saratoga, CA (US);
Mir Bahram Ghaderi, Cupertino, CA (US);
Vincent Sing Tso, Milpitas, CA (US);
Exar Corporation, Fremont, CA (US);
Abstract
A mechanism for dealing with faster clock speeds by increasing the pulse width of the pump-up and pump-down pulses of a Hogge-type phase detector without dividing the clock. In particular, the NRZ data stream is divided into two, interleaved data streams which are provided through two series of flip-flops. By connecting the exclusive-OR gates separately to the two series of flip-flops to generate the pump-up and pump-down pulses, a longer time between transitions can be achieved by having alternate transitions (up and down) used by the two different series of flip-flops. In addition, delay circuits are provided to compensate for the clock-to-data output delay of the flip-flops.