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, 2021
Filed:
Sep. 22, 2020
Kit S. Tam, Menlo Park, CA (US);
Kit S. Tam, Menlo Park, CA (US);
Other;
Abstract
A system includes a CS playback device that establishes a secure communication channel with a media source device on a wireless medium, wherein the CS playback device receives and decodes a media stream transmitted from the media source device on the secure communication channel, thereby providing a decoded media stream. The CS playback device generates playback clock messages based on the decoded media stream, and transmits these playback clock messages on a wireless communication channel. One or more SPS playback devices are provided, each storing information enabling the SPS playback device to receive and decode the media stream transmitted from the media source device on the secure communication channel, whereby each SPS playback device extracts audio playback messages from the media stream. Each SPS playback device includes circuitry for receiving the playback clock messages from the wireless communication channel, and circuitry for processing the audio playback messages in response to the received playback clock messages.