KR870003667A - Automatic telephone line connection system - Google Patents

Automatic telephone line connection system Download PDF

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Publication number
KR870003667A
KR870003667A KR1019850007059A KR850007059A KR870003667A KR 870003667 A KR870003667 A KR 870003667A KR 1019850007059 A KR1019850007059 A KR 1019850007059A KR 850007059 A KR850007059 A KR 850007059A KR 870003667 A KR870003667 A KR 870003667A
Authority
KR
South Korea
Prior art keywords
rom
handset
ram
switch
generator
Prior art date
Application number
KR1019850007059A
Other languages
Korean (ko)
Inventor
김지원
Original Assignee
정재은
삼성전자 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 정재은, 삼성전자 주식회사 filed Critical 정재은
Priority to KR1019850007059A priority Critical patent/KR870003667A/en
Publication of KR870003667A publication Critical patent/KR870003667A/en

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Abstract

내용 없음No content

Description

자동전화 선로 연결시스템Automatic telephone line connection system

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

첨부된 도면은 본 발명의 회로도이다.The accompanying drawings are circuit diagrams of the invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

A : 송수화기 B : 스위치부A: handset B: switch

C : 키보드 D : 벨C: Keyboard D: Bell

E : 메모리 펄스 발생기 F : 키보드 펄스 발생기E: Memory Pulse Generator F: Keyboard Pulse Generator

G : 송수화회로 H : 벨신호 발생기G: Handset Circuit H: Bell Signal Generator

T : 클럭발생기 TB1,2: 3-스테이트 버퍼T: Clock generator TB 1,2 : 3-state buffer

Claims (1)

송수화기(A)를 송수화회로(G)에 연결시키고, 키보드(C)를 키보드 펄스 발생기(F) 및 메모리 필스 발생기(E)에 연결시키며, 상기 메모리 펄스발생기(E)의 출력을 램(RAM)에 연결하고, 키보드펄스 발생기(F)의 입, 출력 포트는 3-스테이트 버퍼(TB1)를 거쳐 램(RAM)에 연결시키는 한편, 롬(ROM)에는 직접 연결하며, 임의의 시간이 경과하면 클럭 펄스를 발생하는 클럭 발생기(T)의 출력을 롬(ROM)의 클럭단자에 연결시키고, 송수화할때 송수화기(A)에 의해서 램(RAM)과 롬(ROM)의 리세트단자(RES)에 인가되는 터세트 펄스를 온, 오프하는 스위치부(B)의 스위치(SW1)를 송수화회로(G)와 램(RAM), 롬(ROM)의 리세트단자(RES) 사이에 설치하고, 상기 스위치부(B)의 스위치(SW1)와 반대로 동작하는 스위치(SW2)를 램(RAM)과 송수화회로(G) 사이에 설치하며, 송수화 선로상에 3-스테이트 버퍼(TB2)의 일측단을 연결하고 타측단은 롬(ROM)에 연결시키며, 상기 3-스테이트 버퍼(TB1)(TB2)의 각 콘트를 단자(C')를 롬(ROM)에 각각 연결시키고, 상대방의 통화가 끝났을 경우 롬(ROM)의 출력을 벨신호 발생기(H)를 거쳐 벨(D)에 인가한 것을 특징으로 하는 자동전화 선로 연결시스템.The handset A is connected to the handset circuit G, the keyboard C is connected to the keyboard pulse generator F and the memory field generator E, and the output of the memory pulse generator E is RAM. ), The input and output ports of the keyboard pulse generator (F) are connected to RAM through a 3-state buffer (TB 1 ), while directly to the ROM, and a random time has elapsed. Then, the output of the clock generator T that generates the clock pulse is connected to the clock terminal of the ROM, and the reset terminal RES of the RAM and the ROM is performed by the handset A during handset. A switch SW 1 of the switch unit B for turning on and off the reset pulse applied to the circuit is provided between the handset circuit G, the RAM, and the reset terminal RES of the ROM. In addition, a switch SW 2 operating opposite to the switch SW 1 of the switch unit B is installed between the RAM and the handset circuit G, and a 3-state buffer ( One end of TB 2 ) is connected and the other end is connected to a ROM, and each control of the 3-state buffer TB 1 (TB 2 ) is connected to a terminal C ′ to a ROM, respectively. Automatic telephone line connection system, characterized in that when the other end of the call, the output of the ROM (ROM) is applied to the bell (D) via the bell signal generator (H). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019850007059A 1985-09-25 1985-09-25 Automatic telephone line connection system KR870003667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019850007059A KR870003667A (en) 1985-09-25 1985-09-25 Automatic telephone line connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019850007059A KR870003667A (en) 1985-09-25 1985-09-25 Automatic telephone line connection system

Publications (1)

Publication Number Publication Date
KR870003667A true KR870003667A (en) 1987-04-18

Family

ID=69467937

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019850007059A KR870003667A (en) 1985-09-25 1985-09-25 Automatic telephone line connection system

Country Status (1)

Country Link
KR (1) KR870003667A (en)

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E902 Notification of reason for refusal
E601 Decision to refuse application