Coded information arrangement

Communications: electrical – Continuously variable indicating – With meter reading

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Details

340636, 340663, 34082554, H04Q 900, G08B 2900

Patent

active

045147310

ABSTRACT:
An active transponder of an identification system comprises a memory for storing coded information and supplying it to a transmitter output, and data means independent of the memory for supplying further information to the output. The transponder has a battery and the data means can comprise detectors which detect when the voltage of the battery falls below respective predetermined levels. The data means can also comprise input connections arranged to receive signals representing the updated values of respective parameters. These signals are supplied to respective inputs of a data selector independently of the memory.

REFERENCES:
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patent: 3858212 (1974-12-01), Tompkins et al.
patent: 3859624 (1975-01-01), Kriofsky et al.
patent: 4092524 (1978-05-01), Moreno
patent: 4160246 (1979-07-01), Martin
patent: 4260983 (1981-04-01), Falck et al.
patent: 4325146 (1982-04-01), Lennington
patent: 4358756 (1982-11-01), Morel et al.
patent: 4388615 (1983-06-01), Ford et al.
patent: 4399437 (1983-08-01), Falck et al.

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