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. 18, 2006
Filed:
May. 06, 2004
Ludovic Ruat, Savourin, FR;
Paul Kinowski, Aix-en-Provence, FR;
Alexander Czajor, Bouc Bel Air, FR;
STMicroelectronics S.A., Montrouge, FR;
Abstract
An integrated circuit having a clock calibration device receiving a local clock signal from an oscillator and applying a correction value to the signal to produce a corrected clock signal. The clock calibration device includes a frequency dividing module having a programmable divider and a calibration register for storing the correction value, the programmable divider receiving the local clock signal and delivering the corrected clock signal, and a circuit for determining a new correction value using an external reference signal. A time base unit produces a time base signal using a timing signal derived from the local clock signal, and it includes a counting module coupled to a load register wherein a load value is stored that determines the ratio between the frequency of the time base signal and that of the timing signal. An external computing unit loads a new load value into the load register by using the new correction value stored in the calibration register to deduce the new load value therefrom.