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:
May. 13, 2014
Filed:
Aug. 08, 2011
Michael K. Poimboeuf, San Mateo, CA (US);
Francis S. Bernard, Brentwood, CA (US);
Kevin A. Smith, Torrance, CA (US);
Parkson Wong, Los Altos, CA (US);
Todd S. Stock, Palo Alto, CA (US);
William R. Lawson, Reno, NV (US);
Michael K. Poimboeuf, San Mateo, CA (US);
Francis S. Bernard, Brentwood, CA (US);
Kevin A. Smith, Torrance, CA (US);
Parkson Wong, Los Altos, CA (US);
Todd S. Stock, Palo Alto, CA (US);
William R. Lawson, Reno, NV (US);
RPX Corporation, San Francisco, CA (US);
Abstract
Multiple media devices are synchronized in a multi-media system having a computer system, a plurality of media devices, and a display system. Each media device to be synchronized receives a front-end synchronization signal that periodically increments a front-end counter. The front-end counter represents an unadjusted system time (UST). The media device obtains a frame of data to be displayed from a computer system. The media device also receives a back-end synchronization signal that periodically increments a back-end counter each time a frame of data is to he displayed. The back-end counter represents a media stream count (MSC). UST and MSC data are periodically transmitted to the computer system for analysis and use by a synchronization algorithm. Specifically, UST is transmitted to the computer system each time a frame of data is obtained, and a UST/MSC pair is transmitted to the computer system each time a frame of data is displayed. The computer system executes a synchronization algorithm that uses the transmitted UST and UST/MSC pair to maintain the media devices in a synchronized state.