Mobile communication transceiver

Details Mobile communication transceiver Mobile communication transceiver

1989-09-06

1991-04-23

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

455 89, 455186, 455226, 455314, 379 61, H04B 144

Patent

active

050105841

ABSTRACT:
A mobile communication transceiver includes a controller. The controller includes an A/D converter, a memory, and a CPU. The A/D converter converts an output voltage corresponding to a reception input voltage from the receiver into a digital signal. The memory stores a plurality of predetermined data for determining a speech enable electric field level and a plurality of predetermined data for determining a high electric field level. The CPU determines a speech enable electric field level by comparing the digital signal from the A/D converter with the data stored in the memory. The CPU compares the digital signal supplied from the A/D converter through an interface with the high electric field level determination data stored in the memory when the high electric field level is determined. The CPU selects a determination level of the speech enable electric field level from the plurality of data stored in the memory.

REFERENCES:
patent: 4137499 (1979-01-01), Caudel
patent: 4457018 (1984-06-01), Takayama
patent: 4486624 (1984-12-01), Puhl et al.
patent: 4585903 (1986-04-01), Schiller et al.
patent: 4619002 (1986-10-01), Thro
patent: 4654882 (1987-03-01), Ikeda
Development of Narrow Band MCA System by Masashi Tanaka et al. NEC Res. & Develop., No. 89, Apr. 1988; pp. 89-101.

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