Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1990-09-05
1992-07-28
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250214B, H01J 4014
Patent
active
051342774
ABSTRACT:
A remote data transfer system, particularly an identification system for identifying objects such as livestock, pets and containers. An interrogator generates a directional light beam which the operator can direct at a selected animal or package up to 30-14 200 meters away; and a tag transponder carried by the object is activated only on receipt of the light beam, and transmits a coded RF signal. The signal is received by the interrogator which displays the identity of the animal derived from the coded RF signal. In its "receive" mode, the tag transponder requires minimal power, thereby prolonging battery life. A short rise time light pulse (or a pulse sequence) is identified and used to switch power to the transponder. After transmission of the coded RF signal, the transponder returns to a low power draw stand-by state. The tag is also able to transmit real time information, with or without the tag identity data. Furthermore, the tag is able to accept data from a remote source and substantially simultaneously transmit data.
REFERENCES:
patent: 3377616 (1968-04-01), Auer, Jr.
patent: 3815093 (1974-06-01), Caretto et al.
patent: 3880528 (1975-04-01), Petersen et al.
patent: 3897753 (1975-08-01), Lee et al.
patent: 3937880 (1976-02-01), Schlenker
patent: 4036178 (1977-07-01), Lee et al.
patent: 4262632 (1981-04-01), Hanton et al.
patent: 4314283 (1982-02-01), Kramer
patent: 4325146 (1982-04-01), Lennington
patent: 4376576 (1983-03-01), Snelling
patent: 4420684 (1983-12-01), Gauthier
patent: 4510495 (1985-04-01), Sigrimis et al.
patent: 4532537 (1985-07-01), Kane
patent: 4583860 (1986-04-01), Butner
patent: 4641374 (1987-02-01), Oyama
patent: 4724312 (1988-02-01), Snaper
Bullock Graeme J.
Gamgee Christopher J.
Jones Peter L.
Yerbury Michael J.
Australian Meat and Live-Stock Corporation
Nelms David C.
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