RF meter reading system

Details RF meter reading system RF meter reading system

1993-10-22

1995-09-19

Peng, John K.

Communications: electrical

Continuously variable indicating

Plural transmitters

34087002, 34087018, 375282, 375369, G08C 1508

Patent

active

054519381

ABSTRACT:
The RF meter reading system includes a transmitter having an encoder. Meter data is encoded and modulated using a bi-phase modulating scheme. In order to uniquely identify the start of a data transmission, a super start field, which is an "illegal" bi-phase signal is used. The super start field is selected such that it cannot be recognized if transmissions from more than one transmitter are being received by the receiver.

REFERENCES:
patent: 3754250 (1973-08-01), Bruner
patent: 3961137 (1976-06-01), Hutt et al.
patent: 4406924 (1983-09-01), Dorey
patent: 4614945 (1986-09-01), Brunius et al.
patent: 5099348 (1992-03-01), Huddleston et al.
patent: 5239575 (1993-08-01), White et al.

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