Infrared data communications

Details Infrared data communications Infrared data communications

1988-04-21

1990-12-11

Orsino, Joseph A.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

370 1, 455617, H04J 1400, H04B 1024, H04B 1014

Patent

active

049776185

ABSTRACT:
The present invention is an apparatus for wireless communications of information between two locations. A transmitter means modulates the information into infrared radiation at a first location. The infrared radiation is transmitted by the transmitter to a reflecting surface along a straight line path which is transparent to the infrared radiation. The infrared radiation is reflected at the reflecting surface forming reflected infrared radiation. A receiver means for receiving the reflected infrared radiation from the reflecting surface is positioned at a second location. The second location and the reflecting surface have a straight line path therebetween which is transparent to the infrared radiation.

REFERENCES:
patent: 4402090 (1983-08-01), Gfeller
patent: 4540605 (1985-09-01), Barone
patent: 4596050 (1986-06-01), Rogers
patent: 4627106 (1986-12-01), Drake
patent: 4723314 (1988-02-01), Schneeberger
F. R. Gfeller and URS Bapst, Wireless In-House Data Communication Via Diffuse Infrared Radiation, pp. 1474-1486; Proceedings of the I.E.E.E.; vol. 67; No. 11; Nov. 1979.
F. Gfeller and E. Mumprecht, Minicomputer System Components Interconnected Via a Serial Infrared Link, IBM Technical Disclosure Bulletin, vol. 25, No. 8, Jan. 1983, pp. 4135-4137.
F. Gfeller, Infranet: Infrared Microbroadcasting Network for In-House Data, IBM Zurich Research Laboratory, 8803 Ruschlikon, Switzerland, pp. P27-1 to P27-4.
Touchpad Cable Function, IBM Technical Disclosure Bulletin, vol. 28, No. 9, Feb. 1986, pp. 4089-4090.
Group Encoding Method for Infrared Communication, IBM Disclosure Bulletin, vol. 28, No. 10, Mar. 1986, pp. 4440-4441.
Asynchronous Communication Link for Infrared Transmission, IBM Technical Disclosure Bulletin, vol. 28, No. 9, Feb. 1986, pp. 4083-4085.

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