Radio apparatus

Details Radio apparatus Radio apparatus

1996-01-26

1998-08-25

Au, Amelia

Telecommunications

Transmitter and receiver at separate stations

Optimum frequency selection

4551611, H04B 1500

Patent

active

057992410

ABSTRACT:
A radio apparatus using a limited channel scan mode is provided. In the limited channel scan mode, a parent unit scans for transmitting within a limited channel group determined on the basis of the last channel used, and a child unit intermittently scans for receiving within the same limited channel group. Since not all channels are scanned, the working time of the child unit during one scan period is shortened and the battery power is saved. When interference occurs during communication, the channel being used is switched and the channel group thereafter is thus also changed.

REFERENCES:
patent: 4622695 (1986-11-01), Whiting
patent: 5044010 (1991-08-01), Frenkiel et al.
patent: 5363428 (1994-11-01), Nagashima
patent: 5627883 (1997-05-01), Maeda et al.

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