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. 06, 2001
Filed:
Jun. 04, 1999
Nicolas Lebouleux, Grenoble, FR;
Benoît Marchand, Grenoble, FR;
Corrine Ianigro, Grenoble, FR;
Nathalie Dubois, Grenoble, FR;
STMicroelectronics S.A., Gentilly, FR;
Abstract
A device for the generation of a drive signal phase-shifted with respect to an external synchronization signal includes a first digital phase-locked loop to give a reference signal, servo-linked to the external synchronization signal by a current phase among N phases of a high frequency signal. The device includes a second digital phase-locked loop including a measuring circuit to measure the position of an active edge of the drive signal or a derived signal that is delayed with respect to an active edge of the reference signal. The second phase-locked loop also includes a circuit to compute the phase shift to be made and a phase-shift circuit. The measurement circuit includes a circuit for the rough measurement of the position, controlled by a fixed phase of the high frequency signal independent of the present phase of locking in the first loop. The digital computation circuit accounts for this shift between the fixed phase and the present phase. The device applies to circuits for linear signal processing in a monitor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile