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:
Aug. 23, 2005
Filed:
Aug. 13, 2002
Stephen Beales, Saltaire, GB;
Darren Butler, Shipley, GB;
Stephen Beales, Saltaire, GB;
Darren Butler, Shipley, GB;
Pace Micro Technology Plc, Shipley, GB;
Abstract
The invention relates to a method of controlling the operation of a voltage controlled oscillator (VCO) with respect to a SAW filter () within a broadcast data receiver (BDR) (). Over time, it is found that during normal operation of the BDR (), the SAW filter () is susceptible to frequency drift which can affect the operation of the BDR. In accordance with the invention, temperature readings are taken at various time intervals from within the BDR () to provide an indication of changes in temperature over time and, if the temperature does change in the BDR with time then the operating frequency of the VCO can be adjusted to a predefined frequency value which is appropriate for the temperature values measured. By adjusting the operating frequency of the VCO with changes in temperature, the drift of the SAW filter () can be compensated for, thereby ensuring the continued operation of the BDR () in the required manner.