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:
Oct. 05, 2004
Filed:
Sep. 19, 2000
Peter Hubertus Frencken, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An exemplary data processing device includes a clock recovery system for locking a clock frequency to time stamps (PCR) of an incoming data stream, e.g. MPEG. The exemplary device uses a free running clock ( ) that generates a reference frequency (FREF) from which a desired locked clock frequency is synthesized ( ) under control of a processing unit ( ) that compares ( ) the locked clock frequency to the time stamps (PCR). MPEG audio and video processing clock frequencies are synthesized ( ) from a free running reference frequency (FREF) and locked to the MPEG time base on basis of time stamps (PCR) provided in the MPEG data stream. Other sub-systems ( ′) run on frequencies that are not locked to the time base, e.g. simple multiples ( ′) of the free running reference frequency (FREF).