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. 10, 2025
Filed:
Jan. 17, 2024
Applicant:
Roku, Inc., San Jose, CA (US);
Inventors:
Assignee:
Roku, Inc., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H04N 21/43 (2011.01); H03L 7/00 (2006.01); H04N 5/04 (2006.01); H04N 21/4363 (2011.01);
U.S. Cl.
CPC ...
H04N 21/4305 (2013.01); H03L 7/00 (2013.01); H04N 5/04 (2013.01); H04N 21/43076 (2020.08); H04N 21/43637 (2013.01);
Abstract
The invention provides a method for providing a synchronization in a computer network for synchronized playback of audio an/or video by a plurality of separate devices. Each separate device generates a virtual clock in response to a timing of the audio codec of a received audio stream. Especially, segmented time is used as reference time. 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 extrapolated by a monotonic clock. A sample rate converter may be used to slightly adjust the frequency of the virtual clock.