| 摘要 |
PURPOSE: A family radio service(FRS) circuit is provided to decrease volume and size by composing internal circuits as an ASIC and mount additional functions. CONSTITUTION: A radio receiving unit(10) demodulates a radio wave received from the outside. A radio transmitting unit(20) modulates a signal and transmits the modulated signal to the outside. A frequency synthesizing unit(90) generates a requested frequency for modulating and demodulating a voice signal and data. A voice input unit(30) receives a voice of a user as an electric signal. A power unit(40) supplies power with a certain level. A button input unit(50) receives a value selected by the user as an electric value. An LCD(60) displays state and function of a device. A voice output unit(70) outputs a voice of a call object. An ASIC circuit unit(80) controls a radio communication and each composition element.
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