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:
Jul. 22, 1997
Filed:
Apr. 28, 1995
Orhan Tozun, Monte Sereno, CA (US);
Earl William McCune, Jr, Santa Clara, CA (US);
International Microcircuits, Inc., Milpitas, CA (US);
Abstract
An accumulator stores a signal representation of an accumulated angle that is incremented by an input angle in response to a reference clock pulse. The most significant bit (MSB) of the accumulated angle signals drives the input of a phase locked loop of the type that includes a loop filter, a frequency divider and a voltage controlled oscillator (VCO). A charge is injected into the loop filter during an overshoot interval during which the output of the frequency divider differs from the MSB. A compensating charge is injected into the loop filter to compensate for the charge injected during the overshoot interval. Jitter free spectrum spread clock pulses are provided by the VCO in response to the MSB.