KR890012470A - Transmission / reception power cutoff circuit when charging a wireless - Google Patents

Transmission / reception power cutoff circuit when charging a wireless Download PDF

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Publication number
KR890012470A
KR890012470A KR1019880000829A KR880000829A KR890012470A KR 890012470 A KR890012470 A KR 890012470A KR 1019880000829 A KR1019880000829 A KR 1019880000829A KR 880000829 A KR880000829 A KR 880000829A KR 890012470 A KR890012470 A KR 890012470A
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KR
South Korea
Prior art keywords
power
signal
input terminal
transmission
module
Prior art date
Application number
KR1019880000829A
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Korean (ko)
Other versions
KR910001733B1 (en
Inventor
정광욱
Original Assignee
강진구
삼성반도체통신 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 강진구, 삼성반도체통신 주식회사 filed Critical 강진구
Priority to KR1019880000829A priority Critical patent/KR910001733B1/en
Publication of KR890012470A publication Critical patent/KR890012470A/en
Application granted granted Critical
Publication of KR910001733B1 publication Critical patent/KR910001733B1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/02Constructional features of telephone sets
    • H04M1/03Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems

Abstract

내용 없음.No content.

Description

무선전화기 충전시 송수신 전원 차단회로Transmission / reception power cutoff circuit when charging a wireless

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 3도는 본 발명의 무선전화기의 구성도.3 is a block diagram of a radiotelephone according to the present invention.

Claims (1)

음성신호를 입력 소정주파수의 음성신호로 변조하는 손신모듈(10)과, 소정 주파수의 신호를 입력 음성신호로 복조하는 수신모듈(20)과, 상기 송신모듈(10)의 소정주파수의 신호를 공중선(220)을 통해 전파하고 상기 공중선(220)을 통해 전파되는 소정 주파수의 신호를 입력 상기 수신모듈(20)로 전송하는 송수신 분리필터(30)를 구비한 무선전화기의 리모트에 있어서, 본체로 부터 제1전원(VCC)를 입력하기 위한 제l전원 입력단자(1)와, 본체로 부터 제2전원(GND)를 입력하기 위한 제2전원 입력단자(2)와, 상기 제1 및 제2전원 입력단자(1,2) 사이에 접속 제1전원과 제2전원의 차전압을 축적하기 위한 축전기(40)와, 상기 축전지(40)와 제1전원 입력단자 사이에 접속 상기 제1전원을 완충 축전기(40)로 전송하는 다이오드(D)와, 운용자의 조작에 따라 온-오프 동작상태를 유지하며 상기 축전지(40)의 축전된 전원이나 다이오드(D)를 통해 공급되는 제1전원을 상기 송수신모듈(10,20)에 전송하거나 차단하는 전원개폐 스위치(SW1)와, 시스템을 제어하기 위한 마이콤(50)과, 본체로 부터 임의의 논리상태의 충전표시 신호를 입력하기 위한 충전표시 입력단자(3)와, 상기 충전표시 입력단자(3)에 접속되어 상기 충전표시 입력단자(3)에 충전표시 신호가 안가되는가 감지하여 상기 충전표시 신호와 상반된 논리상태의 충전감지 신호를 발생 상기 마이콤(50)의 게1입력단자로 출력하는 수단으로 작용하는 저항(Rl)과 제1트랜지스터(Ql)로 구성된 인버터 회로와, 운용자의 선택에 의해 임의의 논리상태의 모드선택신호를 발생 상기 마이콤(50)의 제 2 입력단자(I2)로 출력하는 모드선택 스위치(SW2)와, 상기 전원개폐 스위치(SW1)와 상기 송수신모듈(10,20) 사이에 접속되어 상기 마이콤(50)의 제l제어신호에 따라 상기 전원개폐 스위치(SW1)를 통해 상시 송수신모듈(10,20)로 공급되는 전원을 제어하기 위한 수단으로 작용하는 제2트랜지스터(A2)와 저항(R2)으로 구성된 제 1스위칭회로와, 상기 제 2 트랜지스터(Q2)와 송신모듈 사이에 접속되어 상기 마이콤(50)의 제 2 제어신호에 의해 제 2 트랜지스터(Q2)를 통해 인가되는 전원을 송신모듈(10)로의 전송을 제어하는 수단으로 작용하는 제3트랜지스터(Q3) 및 저항(R4)로 구성된 제2스위칭 회로로 구성되어 충전시 상기 전원개폐 스위치(SWl) 가 온(ON)상태를 유지하고 있을경우 송수신모듈(10,20)로의 전원공급을 차단함을 특징으로 하는 무선전화기의 충전시 송수신 전원 차단회로.A lossy module 10 for modulating a voice signal into a voice signal of an input predetermined frequency, a receiving module 20 for demodulating a signal of a predetermined frequency into an input voice signal, and a signal of a predetermined frequency of the transmitting module 10 In the remote of the radio telephone having a transmission and reception separation filter 30 for transmitting a signal of a predetermined frequency propagating through the 220 and propagated through the aerial line 220 to the receiving module 20, from the main body A first power input terminal 1 for inputting a first power supply VCC, a second power input terminal 2 for inputting a second power supply GND from a main body, and the first and second power supplies; A capacitor 40 for accumulating the difference voltage between the first power supply and the second power supply between the input terminals 1 and 2, and a connection between the battery 40 and the first power input terminal. Diode (D) to transmit to the capacitor 40, and maintains the on-off operation state according to the operator's operation And the power switch (SW1) for transmitting or cutting off the first power supplied through the stored power or the diode (D) of the battery 40 to the transmission and reception modules (10, 20), and the microcomputer for controlling the system 50, a charge display input terminal 3 for inputting a charge display signal in an arbitrary logic state from the main body, and a charge display input terminal 3 connected to the charge display input terminal 3 to charge the charge display input terminal 3; The resistor Rl and the first transistor Ql which serve as a means for detecting whether the display signal is inactive and outputting the charge detection signal in a logic state opposite to the charge display signal to the first input terminal of the microcomputer 50. A mode selection switch SW2 configured to generate a mode selection signal in an arbitrary logic state by the selected inverter circuit, the second input terminal I2 of the microcomputer 50, and the power switch SW1. ) And the transmission and reception module (10, 2) A second transistor connected between 0) and acting as a means for controlling power supplied to the transceiving modules 10 and 20 through the power switching switch SW1 according to the first control signal of the microcomputer 50; A first switching circuit composed of (A2) and a resistor (R2), and connected between the second transistor (Q2) and the transmission module and through a second transistor (Q2) by a second control signal of the microcomputer (50). It is composed of a second switching circuit composed of a third transistor (Q3) and a resistor (R4) that acts as a means for controlling the transmission of the applied power to the transmission module 10, the power switching switch (SWl) is turned on when charging ( The circuit for transmitting and receiving power during charging of a wireless telephone, characterized in that the power supply to the transmission and reception module (10, 20) is cut off when the state is maintained. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019880000829A 1988-01-30 1988-01-30 Charging circuit in cordless telephone KR910001733B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880000829A KR910001733B1 (en) 1988-01-30 1988-01-30 Charging circuit in cordless telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880000829A KR910001733B1 (en) 1988-01-30 1988-01-30 Charging circuit in cordless telephone

Publications (2)

Publication Number Publication Date
KR890012470A true KR890012470A (en) 1989-08-26
KR910001733B1 KR910001733B1 (en) 1991-03-22

Family

ID=19271854

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880000829A KR910001733B1 (en) 1988-01-30 1988-01-30 Charging circuit in cordless telephone

Country Status (1)

Country Link
KR (1) KR910001733B1 (en)

Also Published As

Publication number Publication date
KR910001733B1 (en) 1991-03-22

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