Projection image display device
US6624854B1 · kind B1 · utility
14Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/317
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection image display device capable of operating only predetermined one among a plurality of projection image displays. An AND gate 25 performs switching between first and second states, the first state being for transmitting a remote control signal received by an IR receiving section 23 to a control unit 11 according to an output of a switch circuit 24, and the second state being for transmitting no remote control signals received by the IR receiving section 23 to the control unit 11. The switch circuit 24 may be switched manually or by means of a signal from the control unit 11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.