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:
Jan. 27, 2009
Filed:
Jul. 12, 2007
Bendik Kleveland, Santa Clara, CA (US);
Bendik Kleveland, Santa Clara, CA (US);
ZeroG Wireless, Inc., Sunnyvale, CA (US);
Abstract
A startup circuitand methodis provided for quickly starting up a resonator based oscillator. Tunable oscillatorprovides an impetus signal to oscillatorthrough capacitor. The impetus signal has a frequency that is an estimate of the resonant frequency of resonator. The circuit measures the frequency of oscillatorand the frequency of tunable oscillator. The circuit then adjusts the frequency of tunable oscillatorsuch that the frequency of the tunable oscillator is substantially equal to the resonant frequency of the resonatorand stores a data state necessary for the tunable oscillatorto generate a signal with this target frequency in the future. During an ensuing startup cycle the stored data state causes the impetus signal delivered by tunable oscillatorto be substantially equal to the target frequency of oscillatorwhich improves startup performance.