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:
Jun. 09, 2020
Filed:
Jan. 27, 2016
Applicant:
Roku, Inc., Los Gatos, CA (US);
Inventors:
Assignee:
ROKU, INC., Los Gatos, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 27/10 (2006.01); H04N 21/414 (2011.01); H04N 21/436 (2011.01); H04N 21/43 (2011.01); H04N 21/8547 (2011.01); H04N 21/4363 (2011.01);
U.S. Cl.
CPC ...
G11B 27/10 (2013.01); H04N 21/41407 (2013.01); H04N 21/4302 (2013.01); H04N 21/43615 (2013.01); H04N 21/43637 (2013.01); H04N 21/8547 (2013.01);
Abstract
A method is provided for synchronizing playback of audio an/or video by a plurality of separate devices in a computer network. Each separate device generates a virtual clock in response to a timing of the audio codec of a received audio stream. Either the virtual clock is generated directly in response to the tick counter of the audio codec, or by a periodic measurement of the timing of the audio codec interpolated by a monotonic clock. A sample rate converter may be used to slightly adjust the frequency of the virtual clock.