Audio playback device and operation method of the same
US11144205B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Feb 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.