Projection television system employing optics through which tran

Details Projection television system employing optics through which tran Projection television system employing optics through which tran

1991-10-29

1992-12-08

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358231, 358113, H04N 931, H04N 574, H04N 533

Patent

active

051702584

ABSTRACT:
A projection television system includes a projection unit having an optical element through which infrared television signals are received. The received signals are processed to provide a television image display which is projected for viewing. Received television signals from a TV station or cable are converted to infrared signals and transmitted along a given axis of an infrared transmission link extending between an infrared transmitter, remotely positioned from the projection unit, to an infrared detector, located in the projection unit. The detector converts the infrared TV signal into a video signal which signal is processed by the projection receiver to provide the image for display. The infrared transmitter, the optical element and the detector are aligned along a given axis which is also the optical axis of the system.

REFERENCES:
patent: 4019180 (1977-04-01), Graves
patent: 4786966 (1988-11-01), Hanson et al.
patent: 4916532 (1990-04-01), Streck et al.
Patent Abstracts of Japan; vol. 13, Number 570, (pp. 977), 3918; Dec. 18, 1989; Data Projector Device; Pat. Appl. 1-237592.
Patent Abstracts of Japan; vol. 12; Number 204 (E-620) 3051; Jan. 11, 1988; Remote Control Device Built in Television Receiver; Pat. Appl. 63-2476.

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