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. 30, 1996
Filed:
Dec. 02, 1994
Applicant:
Inventors:
Assignee:
PMC-Sierra, Inc., Burnaby, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L / ; H03L / ;
U.S. Cl.
CPC ...
331 / ; 331 11 ; 331 14 ; 331 25 ; 331D / ;
Abstract
A method of generating output clock pulses using a phase locked loop which includes a voltage controlled oscillator (VCO) is comprised of providing a sequence of data pulses and a sequence of reference clock pulses, resetting the phase locked loop to force the VCO to its lowest operating frequency, releasing reset of the phase locked loop and forcing the VCO to lock to a multiple of the frequency of the reference clock pulses, detecting the presence of data pulse transitions, in the event of detection of data pulse transitions, forcing the VCO to lock to the data pulses, and outputting output clock pulses from the phase locked loop.