KR920020891A - Read generator of telephone - Google Patents

Read generator of telephone Download PDF

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Publication number
KR920020891A
KR920020891A KR1019910005959A KR910005959A KR920020891A KR 920020891 A KR920020891 A KR 920020891A KR 1019910005959 A KR1019910005959 A KR 1019910005959A KR 910005959 A KR910005959 A KR 910005959A KR 920020891 A KR920020891 A KR 920020891A
Authority
KR
South Korea
Prior art keywords
signal
output terminal
reading
output
switch
Prior art date
Application number
KR1019910005959A
Other languages
Korean (ko)
Inventor
김대성
Original Assignee
문정환
금성일렉트론 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 문정환, 금성일렉트론 주식회사 filed Critical 문정환
Priority to KR1019910005959A priority Critical patent/KR920020891A/en
Publication of KR920020891A publication Critical patent/KR920020891A/en

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

내용 없음.No content.

Description

전화기의 열람 발생장치Read generator of telephone

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

제1도는 본 발명의 구상 블럭도.1 is a conceptual block diagram of the present invention.

Claims (1)

후크 스위치가 온되면 온출력단자(ON)를 통해서는 하이신호를 오프출력단자(OFF)를 통해서는 로우신호를 출력하고 후크스위치가 오프되면 반대의 레벨신호를 출력하는 연장통화용 푸쉬 버튼 스위치(2)와, 상기 오프출력단자(OFF)의 신호를 시간 카운트를 위한 스타트 신호로 입력하고 하이신호가 입력되면 소정시간을 카운트한 후 열람 발생용 구동신호를 출력하는 타이머(4)와, 상기 온출력 단자(ON)의 신호와 통화연장용 푸쉬버튼 스위치(2)의 출력신호를 두 입력신호로 하고 출력신호를 상기 타이머(4)의 리셋트신호로서 인가하는 오아게이트(3)와, 타이머(4)로부터 열람발생용 구동신호가 입력되면 열람을 발생시키는 열람 발생기(5)로 구성함을 특징으로 하는 전화기의 열람 발생 장치.When the hook switch is on, the push button switch for the extension call outputs a high signal through the on output terminal (ON) and a low signal through the off output terminal (OFF), and outputs the opposite level signal when the hook switch is off. 2), a timer 4 for inputting the signal of the OFF output terminal OFF as a start signal for time counting and counting a predetermined time when a high signal is input, and outputting a driving signal for reading generation, and the ON An oar gate 3 which uses the signal of the output terminal ON and the output signal of the call extension pushbutton switch 2 as two input signals and applies the output signal as a reset signal of the timer 4; And a reading generator (5) which generates reading when the reading generation driving signal is inputted from (4). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910005959A 1991-04-13 1991-04-13 Read generator of telephone KR920020891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910005959A KR920020891A (en) 1991-04-13 1991-04-13 Read generator of telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910005959A KR920020891A (en) 1991-04-13 1991-04-13 Read generator of telephone

Publications (1)

Publication Number Publication Date
KR920020891A true KR920020891A (en) 1992-11-21

Family

ID=67400331

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910005959A KR920020891A (en) 1991-04-13 1991-04-13 Read generator of telephone

Country Status (1)

Country Link
KR (1) KR920020891A (en)

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application