Toneless telemetry in a wireless system

Details Toneless telemetry in a wireless system Toneless telemetry in a wireless system

2007-04-17

2007-04-17

Trinh, Sonny (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S003010, C455S003040

Reexamination Certificate

active

10918652

ABSTRACT:
The present invention is directed to indoor/outdoor wireless communication systems and methods. Communications between an indoor unit and outdoor unit do not require telemetry tones. The input DC voltage level from the indoor unit is reduced to a level below the normal operating range for the outdoor unit. This is recognized by the outdoor unit as a signal to start receiving telemetry data, which is sent from the indoor unit to the outdoor unit by modulating the transmit signal.

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patent: 6731946 (2004-05-01), Stanwood et al.
patent: 7072627 (2006-07-01), Coffin, III
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patent: 2003/0163822 (2003-08-01), Knutson et al.
patent: 2003/0190902 (2003-10-01), Horie et al.
patent: 2004/0092237 (2004-05-01), Chen

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