Analog and digital audio auto sense
US6185627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Aug 10, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10527
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for selectively sending a first signal or a second signal to an output signal are described. An electrical characteristic of a device coupled to the output is determined, and, in the event the electrical characteristic is determined to be a predetermined value, the first signal to the output, otherwise, the second signal is sent. A detector coupled to the output of an information handling system detects a characteristic of a device coupled to the output. The characteristic is indicative of the type of signal sent to the output. A first type of signal is sent to the output when the characteristic has a predetermined value and a second type of signal is sent to the output when the characteristic does not have the predetermined value. Whether a speaker is an analog speaker or a digital speaker may be automatically determined, and an appropriate analog or digital signal is sent to the speaker depending upon its type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.