IR receiver using IR transmitting diode
US6826370B2 · kind B2 · utility
21Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2003 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Dec 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C2201/20
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Circuitry using infra-red (IR) diodes in remote control units. In one embodiment an IR LED is used both as a transmitter diode and also as a receiver diode responsive to light to thereby develop photocurrents and/or voltages for use by external circuitry. In a second embodiment an improved amplifier circuit is provided for an IR LED and IR photo detector diode which is mounted behind, and receives light through, the transmitter IR LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.