Audio control circuit capable of processing both digital and analog audio signals
US9578420B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Sep 5, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Dec 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2410/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio control circuit receives analog audio signals and digital audio signals via an audio signal input interface. The audio control circuit includes an audio codec chip, a first control circuit, a first switch circuit, a second control circuit, and a second switch circuit. The first control circuit obtains the analog audio signals from the audio signal input interface and converts the analog audio signals into first control signals to control the first switch circuit turned on and off. The second control circuit obtains the digital audio signals from the audio signal input interface and converts the digital audio signals into second control signals to control the second switch circuit turned on and off. The audio codec chip receives the analog audio signals in response to the first switch turned on and receives the digital audio signals in response to the second switch turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.