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:
Mar. 19, 2002
Filed:
Jun. 18, 2001
Kenneth D. Hartman, Dekalb, IL (US);
David J. Kenny, Dekalb, IL (US);
Matthew J. Klueppel, Park Ridge, IL (US);
The Connor Winfield Corporation, Aurora, IL (US);
Abstract
A frequency correction circuit includes a temperature sensor ( ) disposed to measure temperature and produce temperature signals representing sensed temperatures. A data supplier ( ) stores information items, receives digital input signals representing and produces a digital output information signal representing an item selected in accordance with the digital input signal. A control circuit ( ) receives the temperature signals and receives the digital output information signal. The control circuit ( ) produces control signals based on the temperature signals. A clock circuit ( ) is disposed to generate a reference frequency signal. A digital synthesizer ( ) receives the reference frequency signal and the control signals. The digital synthesizer produces an output frequency signal as directed by the control signals received from the control circuit ( ).