Programmable transponder

Details Programmable transponder Programmable transponder

1993-10-04

1996-07-02

Swann, Glen

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 34082571, 34082572, 34087031, H04Q 700

Patent

active

055326862

ABSTRACT:
A passive transponder has a power antenna which receives a power signal and a communication antennas which receives a communication signal. An information generating circuit creates a second communication signal in response to the first communication signal and outputs the second communication signal through the communication antenna. The information generating circuit is powered by a power supply which outputs a voltage for powering the transponder in response to the power signal. The information generating circuit includes a reprogrammable EEPROM and an EEPROM interface circuit which operates on the EEPROM by retrieving and storing data in response to the instructions and data contained within the first communication signal.

REFERENCES:
patent: 4459590 (1984-07-01), Saulnier
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patent: 4631708 (1986-12-01), Wood et al.
patent: 4742470 (1988-05-01), Juengel
patent: 4807140 (1989-02-01), Saulnier
patent: 4827395 (1989-05-01), Anders et al.
patent: 4831540 (1989-05-01), Hesser
patent: 4857893 (1989-08-01), Carroll
patent: 4912471 (1990-03-01), Tyburski et al.
patent: 5041826 (1991-08-01), Milheiser
patent: 5053774 (1991-10-01), Schuermann et al.
patent: 5113184 (1992-05-01), Katayama
patent: 5250944 (1993-10-01), Urbas et al.

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