Portable radio telephone set

Details Portable radio telephone set Portable radio telephone set

1997-10-23

1999-08-10

Kuntz, Curtis A.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455550, H04Q 732

Patent

active

059373601

ABSTRACT:
A portable radio telephone set provided with a display section includes a rotary selector which turns to select various functions. A menu displayed on the display section is selected by the rotary selector during a non-conversation time, and the sound volume can be adjusted during the conversation time. The adjusting operation can be performed from both the front and, the rear sides of the telephone set. The rotary selector and button keys are arranged within the operation range of the thumb, and ordinary dial functions performed by operating these rotary selector and button keys are provided.

REFERENCES:
patent: 4481382 (1984-11-01), Villa-Real
patent: 4739128 (1988-04-01), Grisham
patent: 4845772 (1989-07-01), Metroka et al.
patent: 5027394 (1991-06-01), Ono et al.
patent: 5260998 (1993-11-01), Takagi
patent: 5278993 (1994-01-01), Reiff et al.
patent: 5422656 (1995-06-01), Allard et al.
patent: 5465401 (1995-11-01), Thompson
patent: 5742912 (1998-04-01), Nishiyama et al.

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