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KR960009683A - Video signal receiver - Google Patents

Video signal receiver Download PDF

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Publication number
KR960009683A
KR960009683A KR1019940021906A KR19940021906A KR960009683A KR 960009683 A KR960009683 A KR 960009683A KR 1019940021906 A KR1019940021906 A KR 1019940021906A KR 19940021906 A KR19940021906 A KR 19940021906A KR 960009683 A KR960009683 A KR 960009683A
Authority
KR
South Korea
Prior art keywords
signal
text
synchronous signal
video
video signal
Prior art date
Application number
KR1019940021906A
Other languages
Korean (ko)
Other versions
KR0120590B1 (en
Inventor
전병환
Original Assignee
김광호
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940021906A priority Critical patent/KR0120590B1/en
Publication of KR960009683A publication Critical patent/KR960009683A/en
Application granted granted Critical
Publication of KR0120590B1 publication Critical patent/KR0120590B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/036—Radio; TV

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Studio Circuits (AREA)
  • Television Systems (AREA)

Abstract

약전계조건에서도 문자신호 발생기에서 발생된 문자신호를 수신된 영상신호에 중첩시켜 출력하는 영상신호 수신장치가 개시된다.Disclosed is a video signal receiving apparatus which superimposes and outputs a text signal generated by a text signal generator on a received video signal even in a weak electric field condition.

본 발명에 따른 영상신호 수신장치는 수직동기신호 분리기; 자주발진신호를 분주시켜 복합동기신호 및 복합동기신호의 각 펄스폭보다 전후로 넓은 폭을 갖고 복합동기신호를 마스킹할 수 있는 윈도우신호를 발생하는 복합동기신호 발생기; 문자발생기; 영상신호를 입력하고, 이를 윈도우신호 및 문자신호에 의해 단속시켜 출력하는 제1스위치; 복합동기신호를 입력하고, 이를 윈도우신호에 의해 단속시켜 출력하는 제2스위치; 복합동기신호를 입력하고, 이를 문자신호에 의해 단속시켜 출력하는 제3스위치; 제1스위치, 제2스위치, 그리고 제3스위치로부터 결과된 신호를 합성시켜 영상출력장치에 제공하는 합성기를 포함함을 특징으로 한다.An image signal receiving apparatus according to the present invention comprises: a vertical synchronous signal separator; A composite synchronous signal generator for dividing the self-oscillating signal and generating a window signal capable of masking the composite synchronous signal with a width before and after each pulse width of the composite synchronous signal and the composite synchronous signal; Character generator; A first switch for inputting a video signal and intermittently outputting the video signal by a window signal and a text signal; A second switch for inputting a composite synchronous signal and intermittently outputting it by the window signal; A third switch for inputting a composite synchronous signal and intermittently outputting it by a text signal; And a synthesizer for synthesizing the resultant signal from the first switch, the second switch, and the third switch and providing the result to the image output apparatus.

본 발명에 따른 영상신호 수신장치는 영상신호의 동기부분이 불안한 경우 혹은 영상신호가 입력되지 않는 경우에도 문자발생기에서 발생된 문자신호가 영상출력장치를 통하여 표시될 수 있는 효과를 갖는다.The video signal receiving apparatus according to the present invention has an effect that the text signal generated by the text generator can be displayed through the video output apparatus even when the sync portion of the video signal is unstable or the video signal is not input.

Description

영상신호 수신장치Video signal receiver

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

제2도는 본 발명에 따른 영상신호 수신장치를 보이는 블럭도이다.2 is a block diagram showing an image signal receiving apparatus according to the present invention.

Claims (1)

영상신호 수신장치에 있어서, 입력되는 영상신호에 포함된 수직동기신호를 분리하는 수직동기신호 분리기; 자주발진신호를 분주시켜 복합동기신호 및 복합동기신호의 각 펄스폭보다 전후로 넓은 폭을 갖고 상기 복합동기신호를 마스킹할 수 있는 윈도우신호를 발생하며, 상기 수직동기신호 분리기를 통하여 분리된 수직동기신호가 입력될 경우에는 이에 동기되어 동작하는 복합동기신호 발생기; 상기 복합동기신호 발생기에서 발생된 복합동기신호에 동기되어 화면상에 표시되는 문자정보에 상응하는 문자신호를 발생하는 문자발생기; 상기 영상신호를 입력하고, 이를 상기 윈도우신호 및 상기 문자신호에 의해 단속시켜 출력하는 제1스위칭수단; 상기 복합동기신호를 입력하고, 이를 상기 윈도우신호에 의해 단속시켜 출력하는 제2스위칭수단; 상기 복합동기신호를 입력하고 이를 상기 문자신호에 의해 단속시켜 출력하는 제3스위칭수단; 및 상기 제1스위칭수단, 제2스위칭수단, 그리고 제3스위칭수단으로부터 결과된 신호를 합성시켜 영상출력장치에 제공하는 합성기를 포함하는 영상신호 수신장치.A video signal receiving apparatus, comprising: a vertical synchronous signal separator for separating a vertical synchronous signal included in an input video signal; The self-oscillating signal is divided to generate a composite synchronous signal and a window signal having a width before and after each pulse width of the composite synchronous signal and masking the composite synchronous signal, and a vertical synchronous signal separated through the vertical synchronous signal separator. A complex synchronous signal generator which operates in synchronization with the input signal when the input signal is input; A character generator for generating a character signal corresponding to the character information displayed on the screen in synchronization with the complex synchronous signal generated by the complex synchronous signal generator; First switching means for inputting the video signal and intermittently outputting the video signal by the window signal and the text signal; Second switching means for inputting the composite synchronization signal, intermittently outputting the combined synchronization signal by the window signal, and outputting the resultant signal; Third switching means for inputting the composite synchronous signal and intermittently outputting it by the text signal; And a synthesizer for synthesizing the resultant signal from the first switching means, the second switching means, and the third switching means and providing the synthesized signal to the image output apparatus. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940021906A 1994-08-31 1994-08-31 Apparatus for receiving image signal KR0120590B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940021906A KR0120590B1 (en) 1994-08-31 1994-08-31 Apparatus for receiving image signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940021906A KR0120590B1 (en) 1994-08-31 1994-08-31 Apparatus for receiving image signal

Publications (2)

Publication Number Publication Date
KR960009683A true KR960009683A (en) 1996-03-22
KR0120590B1 KR0120590B1 (en) 1997-10-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940021906A KR0120590B1 (en) 1994-08-31 1994-08-31 Apparatus for receiving image signal

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100501189B1 (en) 2003-05-15 2005-07-18 삼성전기주식회사 Bluetooth headset and method of informing call thereof

Also Published As

Publication number Publication date
KR0120590B1 (en) 1997-10-22

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