EARPHONE-SHAPED RADIO TELEPHONE SET SYSTEM
PROBLEM TO BE SOLVED: To improve the transmission efficiency of a voice signal by uniting a microphone, a speaker, etc., into one, making a handset an earphone shape, separating the handset from a telephone set main body by radio and mounting a keypad on the telephone set main body. SOLUTION: In a h...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To improve the transmission efficiency of a voice signal by uniting a microphone, a speaker, etc., into one, making a handset an earphone shape, separating the handset from a telephone set main body by radio and mounting a keypad on the telephone set main body. SOLUTION: In a handset in an earphone-shaped radio telephone system, a speaker housing part is formed projectingly from a base frame, and a microphone is provided internally at the end of an extended rod provided on another side face of the base frame. A keypad 202 is provided in the main body 200 of the earphone-shaped radio telephone set system, and a displaying part 203 where light emitting elements are arranged is formed at its adjacent position. The controlling part of the body 200 judges a hook-off state to be initialized, analyzes and processes information inputted from the keypad 202, controls the display state of the part 203, feeds supplied drive power to each configuration block and generally controls each configuration block at the same time. A station line matching part makes impedance with a station line matched and enables a telephone to be used. |
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