Audio processing devices with port output circuits controlled by PC beep signal activity
US9686607B1 · kind B1 · utility
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1References
12Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Apr 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio processing integrated circuit chip, such as codec chip, includes at least one port output circuit configured to generate an audio signal to drive an external audio device and a PC beep circuit configured to receive a PC beep signal and to apply the received PC beep signal to an input of the at least one port output circuit. The chip further includes a control circuit configured to detect activity of the PC beep signal and to enable and/or disable the at least one port output circuit responsive to the detected activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.