Telecommunications – Transmitter and receiver at same station – With a common signal processing stage
Patent
1994-10-07
1996-07-30
Pham, Chi H.
Telecommunications
Transmitter and receiver at same station
With a common signal processing stage
455 90, 455351, H04B 140
Patent
active
055421059
ABSTRACT:
A device used with a portable radio (10) and associated carrying case (30) which can automatically adjust radio control functions such as audio output, DTMF tone level mode telephone hang-up or illumination levels of the radio depending on the radio's position in relation to the carrying case. The radio (10) includes a hall effect switch (14) used to signal the a microprocessor within the radio when actuated. A magnet (38) located within the case (30) actuates the hall effect switch (14) when the radio (10) is placed within the case (30). The microprocessor is then signaled to change radio function aiding the user in the operation of the radio (10) depending on the its position.
REFERENCES:
patent: 3611140 (1971-10-01), Shimada
patent: 3659050 (1972-04-01), Carlsson et al.
patent: 4178488 (1979-12-01), Nishihata
patent: 4325142 (1982-04-01), Nakazawa
patent: 4495652 (1985-01-01), Leslie
patent: 4647722 (1987-03-01), Nishida et al.
patent: 4845772 (1989-07-01), Metroka et al.
patent: 4984295 (1991-01-01), Engstrom et al.
patent: 5175869 (1992-12-01), Murata
patent: 5276916 (1994-01-01), Pawlish et al.
Finch Steven J.
Higgins Roger G.
Pierson Paul L.
Motorola Inc.
Pham Chi H.
Scutch, III Frank M.
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