KR910017899A - Automatic and manual switching device of redundant circuit - Google Patents

Automatic and manual switching device of redundant circuit Download PDF

Info

Publication number
KR910017899A
KR910017899A KR1019900003752A KR900003752A KR910017899A KR 910017899 A KR910017899 A KR 910017899A KR 1019900003752 A KR1019900003752 A KR 1019900003752A KR 900003752 A KR900003752 A KR 900003752A KR 910017899 A KR910017899 A KR 910017899A
Authority
KR
South Korea
Prior art keywords
central processing
err
automatic
processing unit
switch
Prior art date
Application number
KR1019900003752A
Other languages
Korean (ko)
Other versions
KR920007137B1 (en
Inventor
이명순
Original Assignee
정용문
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 정용문, 삼성전자 주식회사 filed Critical 정용문
Priority to KR1019900003752A priority Critical patent/KR920007137B1/en
Publication of KR910017899A publication Critical patent/KR910017899A/en
Application granted granted Critical
Publication of KR920007137B1 publication Critical patent/KR920007137B1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Hardware Redundancy (AREA)

Abstract

내용 없음No content

Description

이중화 회로의 자동 및 수동 절체장치Automatic and manual switching device of redundant circuit

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

제1도는 본 발명을 회로도, 제2도는 본 발명의 동작 파형도.1 is a circuit diagram of the present invention, Figure 2 is an operating waveform diagram of the present invention.

Claims (1)

사설교환기의 이중화 구조를 갖는 중앙처리부의 자동 및 수동 절체 장치에 있어서, 중앙처리장치 A 및 B로부터 각각 발생되는 제1 및 제2고장 여부 판단 신호(ERR.A, ERR.B)를 반전시키는 제1 및 제2인버터(INV1,INV2)와, 상기 제1 및 제2인버터(INV1,INV2) 출력 상태에 따라 점등되어 상기 중앙처리장치 A 및 B의 고장 여부를 표시하는 제2 및 제3발광다이오드(LED2,LED3)와, 자동 혹은 수동 절체 모드를 선택하는 제1스위치(SW1)와, 상기 제1스위치(SW1)가 자동 절체 모드 선택시 점등되는 제1발광다이오드(LED1)와, 상기 제1스위치(SW1)의 모드 선택신호와 상기 제1 및 제2고장 여부 판단신호(ERR.A, ERR.B)를 각각 논리 조합하는 제1 및 제2논리합게이트(G1,G3)와, 소정의 제어를 받아 상기 두 중앙처리장치 A 및 B 절환 제어 신호를 발생하는 J/K플립플롭(FF)과, 자동 모드시 상기 제1 및 제2논리합 게이트(G1,G3) 출력을 각각 상기 플립플롭(FF)의 리세트단(R) 및 세트단(S)로 인가하는 제2 및 제3스위치(SW2,SW3)와, 상기 중앙처리장치 A혹은 B 절환 제어신호 상태를 따라 각각 점등되어 상기 중앙처리장치 A혹은 B 절환 되었음을 표시하는 제4 및 제5발광 다이오드(LED4,LED5)와 상기 중앙처리장치 A 및 B 절환 제어신호를 각각 소정 증폭하여 중앙처리장치 A 혹은 B선택 신호를 발생하는 제1 및 제2상태 버퍼(BUF1,BUF2)와, 상기 제1스위치(SW1)의 모드 선택 신호와 상기 제2고장 여부 판단신호(ERR.A, ERR.B)를 각각 논리 조합하는 제1배타적 논리합게이트(G2)와, 상기 제1배타적 논리합 게이트(G2) 출력을 반전시키는 제3인버터(INV3)와, 한단은 접지되며 다른 한단의 상기 제3인버터(INV3)출력을 입력하고 또 다른 한단은 소프트 웨어적 제어를 받아 신호 레벨이 결정되며 상기 세 입력단의 상태에 따라 소정 상태의 클럭 신호를 발생하여 상기 플립플롭(FF)을 제어하는 제2배타적 논리합 게이트(G4)로.An automatic and manual switching device of a central processing unit having a redundant structure of a private exchange, comprising: inverting the first and second failure determination signals ERR.A and ERR.B generated from the central processing units A and B, respectively; Second and third light emitting diodes which are lit according to the first and second inverters INV1 and INV2 and the first and second inverters INV1 and INV2 output states to indicate whether the CPUs A and B have failed. (LED2, LED3), the first switch (SW1) for selecting the automatic or manual switching mode, the first light emitting diode (LED1) is turned on when the first switch (SW1) is selected in the automatic switching mode, and the first First and second logical sum gates G1 and G3 which logically combine the mode selection signal of the switch SW1 and the first and second failure determination signals ERR.A and ERR.B, respectively, and a predetermined control. J / K flip-flop (FF) for receiving the two central processing units A and B switching control signals and the first and second in the automatic mode Second and third switches SW2 and SW3 for applying the logic sum gates G1 and G3 to the reset end R and the set end S of the flip-flop FF, respectively, and the central processing unit A. Or a predetermined amplification of the fourth and fifth light emitting diodes LED4 and LED5 and the central processing unit A and B switching control signals, respectively, lit according to the B switching control signal state to indicate that the central processing unit A or B is switched. First and second state buffers BUF1 and BUF2 generating a central processing unit A or B selection signal, a mode selection signal of the first switch SW1 and the second failure determination signal ERR.A, ERR A first exclusive OR gate G2 for logically combining .B), a third inverter INV3 for inverting the output of the first exclusive OR gate G2, and one end of the third inverter IN Input the (INV3) output and the other stage is under software control to determine the signal level. A second exclusive OR gate (G4), which generates a clock signal of a predetermined condition controls the flip-flop (FF) according to the state of the three input group. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900003752A 1990-03-20 1990-03-20 Automatic and manual switching circuit of dual systems KR920007137B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900003752A KR920007137B1 (en) 1990-03-20 1990-03-20 Automatic and manual switching circuit of dual systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900003752A KR920007137B1 (en) 1990-03-20 1990-03-20 Automatic and manual switching circuit of dual systems

Publications (2)

Publication Number Publication Date
KR910017899A true KR910017899A (en) 1991-11-05
KR920007137B1 KR920007137B1 (en) 1992-08-27

Family

ID=19297173

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900003752A KR920007137B1 (en) 1990-03-20 1990-03-20 Automatic and manual switching circuit of dual systems

Country Status (1)

Country Link
KR (1) KR920007137B1 (en)

Also Published As

Publication number Publication date
KR920007137B1 (en) 1992-08-27

Similar Documents

Publication Publication Date Title
KR910017899A (en) Automatic and manual switching device of redundant circuit
ATE61173T1 (en) LATCHING CIRCUIT WITH DYNAMICALLY SELECTABLE OUTPUT POLARITY.
US4626711A (en) Exclusive or gate circuit
KR910006986A (en) Function selection circuit
KR910017753A (en) Power on / off circuit
KR860002616Y1 (en) Binary logic signal output circuit
KR900000767A (en) Arbitrary / Order Selection Circuit of Order Selection Priority
KR910007184Y1 (en) Video/voice signal switching circuit
KR960706226A (en) ELECTRICAL SWITCHING ASSEMBLY
KR920702901A (en) Programmable Logic Devices
JPH02124627A (en) Clock driver circuit
KR930005367A (en) Noise reduction circuit
KR950001594A (en) Automatic / manual melody selection circuit
KR960002329B1 (en) Open drain output buffer circuit
SU822372A1 (en) Three-valued logic element
KR890009426Y1 (en) Multisoundmode switching circuit
SU455484A1 (en) Device for comparing binary and decimal numbers
KR890009209A (en) Redundancy Control Circuit for Redundant System
SU711608A1 (en) Device for monitoring control circuit of two-position actuating mechanism
KR880001112A (en) High speed input converter with ECL / TTL data.
RU2010361C1 (en) Address former
KR850005058A (en) Logic circuit
KR960043954A (en) Redundancy Control Circuit of Switching Network in Electronic Switching System
JPS63164522A (en) Signal detecting circuit
KR900015532A (en) Monitor image channel control circuit

Legal Events

Date Code Title Description
A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070709

Year of fee payment: 16

LAPS Lapse due to unpaid annual fee