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. 12, 2021
Filed:
Sep. 27, 2019
Realtek Semiconductor Corporation, Hsinchu, TW;
Chun-Hao Peng, Toufen, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
An audio playback device operation method is provided. First audio playback device information corresponding to a first transmission bus format is selected to respond to a host according to a status descriptor request thereof. Whether an audio class-specific request command is received from the host is determined. When the audio class-specific request command is received, the response to the status descriptor request from the host is maintained. When the audio control feature unit descriptor request command is not received, the host is determined to not support the first transmission bus format. Second audio playback device information corresponding to a second audio bus transmission format is selected to response to the host according to the status descriptor request of the host such that when the audio class-specific request command is received, the response to the status descriptor request from the host is maintained.