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. 28, 2000
Filed:
Jun. 01, 1998
Hendrik G Van Veenendaal, Eindhoven, NL;
Yanling Sun, Delft, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A frequency-drift (.DELTA.F) of an oscillator (OSC) is compensated (.apprxeq.-.DELTA.F) by varying various different biassing parameters (V,I) in the oscillator. The biassing parameters (V,I) which are varied may include, for example, voltages (V) or currents (I), either exclusively or in combination, which are supplied to transistors forming part of the oscillator (OSC). The biassing parameters (V,I) may be varied as a function of temperature by one or more elements with suitably chosen temperature coefficients and/or by one or more biassing circuits which provide biassing voltages or currents which vary as a function of temperature, or both.