Narrow-band communication apparatus

Details Narrow-band communication apparatus Narrow-band communication apparatus

1997-09-10

1999-11-23

Le, Thanh Cong

Telecommunications

Transmitter and receiver at same station

455 84, 4552451, H04B 138

Patent

active

059916036

ABSTRACT:
A novel narrow-band communication apparatus comprises a digital signal processor for demodulating the output from a receiving section and outputting a modulation signal for an audio input, an electric field strength detector section for detecting electric field strength in the output from the receiving section, an indicator for indicating whether the narrow-band communication apparatus is in a receiving mode or in a transmission mode, and a power controller for controlling supply of power to, or an operating state of specified portions of, the narrow-band communication apparatus according to the output from the electric field strength detector as well as from the indicator.

REFERENCES:
patent: 4876741 (1989-10-01), Jacobs et al.
patent: 5408685 (1995-04-01), Kennedy et al.
patent: 5519757 (1996-05-01), Torin
patent: 5606741 (1997-02-01), Yamamoto

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