KR920007472A - TV door phone - Google Patents

TV door phone Download PDF

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Publication number
KR920007472A
KR920007472A KR1019910013862A KR910013862A KR920007472A KR 920007472 A KR920007472 A KR 920007472A KR 1019910013862 A KR1019910013862 A KR 1019910013862A KR 910013862 A KR910013862 A KR 910013862A KR 920007472 A KR920007472 A KR 920007472A
Authority
KR
South Korea
Prior art keywords
door phone
mother
electric lock
power
mother device
Prior art date
Application number
KR1019910013862A
Other languages
Korean (ko)
Other versions
KR950001569B1 (en
Inventor
와따루 마쯔모또
Original Assignee
시기 모리야
미쯔비시덴끼 가부시끼가이샤
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 시기 모리야, 미쯔비시덴끼 가부시끼가이샤 filed Critical 시기 모리야
Publication of KR920007472A publication Critical patent/KR920007472A/en
Application granted granted Critical
Publication of KR950001569B1 publication Critical patent/KR950001569B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Selective Calling Equipment (AREA)

Abstract

내용없음.None.

Description

텔레비젼 도어폰TV door phone

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 1실시예에 의한 텔레비젼 도어폰의 모기구의 회로블럭도.1 is a circuit block diagram of a mother instrument of a television door phone according to an embodiment of the present invention.

제2도는 본 발명의 1실시예에 의한 마이크로컴퓨터 동작보정회로도.2 is a microcomputer operation correction circuit diagram according to an embodiment of the present invention.

제3도 및 제4도는 마이크로컴퓨터 동작보정회로의 타이밍도.3 and 4 are timing diagrams of a microcomputer operation correction circuit.

제5도는 종래의 텔레비젼 도어폰의 회로블럭도.5 is a circuit block diagram of a conventional TV door phone.

제6도는 종래의 텔레비젼 도어폰의 모기구의 상세한 회로블럭도.6 is a detailed circuit block diagram of a mother instrument of a conventional television door phone.

제7도는 종래의 텔레비젼 도어폰의 자기구의 상세한 회로블럭도.7 is a detailed circuit block diagram of a magnetic sphere of a conventional television door phone.

제8도는 종래의 텔레비젼 도어폰의 전송계의 주파수분포도.8 is a frequency distribution diagram of a transmission system of a conventional television door phone.

제9도 및 제10도는 종래의 텔레비젼 도어폰의 인터폰기능의 타이밍도.9 and 10 are timing diagrams of an interphone function of a conventional television door phone.

제11도, 제12도 및 제13도는 종래의 텔레비젼 도어폰의 모니터기능의 타이밍도.11, 12 and 13 are timing diagrams of the monitor function of a conventional television door phone.

제14도는 종래의 텔레비젼 도어폰의 송수화기에 의한 자기구의 확인 타이밍도.Fig. 14 is a timing diagram of magnetic sphere identification by the handset of a conventional television door phone.

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

2 : 도어폰 모기구 3 : 도어폰 자기구2: door phone mother instrument 3: door phone magnetic mouth

4 : 2선식 케이블 8 : CRT4: 2-wire cable 8: CRT

7 : 전원회로 9 : 마이크로컴퓨터7 power circuit 9 microcomputer

35 : 회선전환신호 37 : 2접점 릴레이35: line switching signal 37: 2 contact relay

38 : 마이크로컴퓨터 동작보정회로38: Microcomputer motion compensation circuit

Claims (1)

도어폰 모기구(2)와 도어폰자기구(3) 사이를 2선식 케이블(4)로 접속해서 음성과 영상의 주고받음을 하도록한 텔레비전도어폰에 있어서, 상기 도어폰 모기구(2)에 여러개의 도어폰 자기구 접속단자(23)을 마련하여 도어폰 자기구 접속단자의 1개를 사용해서 전기자물쇠를 접속하고, 모기구에서 공급하는 전원을 그대로 이용해서 그 전원을 상기 전기자물쇠로 공급해서 전기자물쇠를 해제하고, 이때 도어폰 모기구에 발생하는 CRT의 섬광을 전기자물쇠의 해제와 동시에 릴레이(37)로 CRT전원을 OFF하는 것에 의해서 억제하며, 또한 도어폰 모기구에는 상기 전기자물쇠를 접속한 것에 의해서 발생하는 제어용마이크로컴퓨터(9)의 동작을 불합리를 보정하는 마이크로컴퓨터 동작보정회로(38)을 마련한 텔레비전 도어폰.In a television door phone in which a door phone mother device 2 and a door phone body device 3 are connected by a two-wire cable 4 to exchange audio and video, the door phone mother device 2 is connected to the door phone mother device 2. A plurality of door phone magnetic sphere connecting terminals 23 are provided to connect the electric lock using one of the door phone magnetic sphere connecting terminals, and the power is supplied to the electric lock using the power supplied from the mother apparatus. To release the electronic lock, thereby suppressing the flash of the CRT generated by the door phone mother device by turning off the CRT power to the relay 37 at the same time as the release of the electric lock. A television door phone provided with a microcomputer operation correction circuit (38) for correcting an unreasonable operation of a control microcomputer (9) generated by being connected. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910013862A 1990-09-10 1991-08-12 Television doorphone KR950001569B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2-239408 1990-09-10
JP2239408A JPH04119058A (en) 1990-09-10 1990-09-10 Television doorphone

Publications (2)

Publication Number Publication Date
KR920007472A true KR920007472A (en) 1992-04-28
KR950001569B1 KR950001569B1 (en) 1995-02-25

Family

ID=17044331

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910013862A KR950001569B1 (en) 1990-09-10 1991-08-12 Television doorphone

Country Status (2)

Country Link
JP (1) JPH04119058A (en)
KR (1) KR950001569B1 (en)

Also Published As

Publication number Publication date
KR950001569B1 (en) 1995-02-25
JPH04119058A (en) 1992-04-20

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