JPS61154043U

JPS61154043U -

Info

Publication number: JPS61154043U
Application number: JP1985036042U
Authority: JP
Priority date: 1985-03-15
Filing date: 1985-03-15
Publication date: 1986-09-24

Description

[Brief explanation of the drawing]

第１図はこの考案装置の系統図、第２図は第１
図における各部の信号を表わすタイミング図であ
る。１：無線送受信部、２：コントロール部、３：
変復調装置、４：データ端末装置、５：呼出音検
出回路、６：論理和回路、７：電源制御回路。 Figure 1 is a system diagram of this devised device, and Figure 2 is the system diagram of this device.
FIG. 3 is a timing diagram showing signals of each part in the figure. 1: Wireless transmitter/receiver section, 2: Control section, 3:
Modulation/demodulation device, 4: data terminal device, 5: ringing tone detection circuit, 6: OR circuit, 7: power supply control circuit.

Claims

[Scope of utility model registration request]

A car telephone device includes a wireless transmitter/receiver and a control unit that controls the wireless transmitter/receiver, and reproduces received data from an audio frequency reception signal of the car phone device, converts transmitted data into an audio frequency signal, and reproduces the received data from the audio frequency signal of the car phone device. A modulation and demodulation device that outputs to a telephone device, a data terminal device that exchanges received data and transmission data between the modulation and demodulation device, and a calling signal detection circuit that detects a calling signal from an audio frequency output signal of the car phone device. , an OR circuit that outputs an off-hook signal to the car phone device when either an in-use signal indicating that the car phone device is in use or a detection signal of the ringing signal detection circuit is detected; , and a power supply circuit controlled by an in-use signal.