Infrared generator from audio signal source
US6931231B1 · kind B1 · utility
77Cited by
14References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2002 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Oct 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C23/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for converting an audio signal output through a stereo headphone jack into an infrared remote control signal. The invention utilizes the audio output to generate positive and negative pulses for operating two infrared light emitting diodes placed in parallel with opposite polarities. This allows for multiple devices with audio output jacks to be utilized as remote control devices. This connection also allows for doubling of the audio output frequency to generate infrared signals at frequencies above the normal capabilities of the audio output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.