KR970068677A - Color level adjustment device - Google Patents

Color level adjustment device Download PDF

Info

Publication number
KR970068677A
KR970068677A KR1019960007317A KR19960007317A KR970068677A KR 970068677 A KR970068677 A KR 970068677A KR 1019960007317 A KR1019960007317 A KR 1019960007317A KR 19960007317 A KR19960007317 A KR 19960007317A KR 970068677 A KR970068677 A KR 970068677A
Authority
KR
South Korea
Prior art keywords
signal
color
screen display
level
video signal
Prior art date
Application number
KR1019960007317A
Other languages
Korean (ko)
Other versions
KR100202564B1 (en
Inventor
조진호
Original Assignee
구자홍
엘지전자 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 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019960007317A priority Critical patent/KR100202564B1/en
Publication of KR970068677A publication Critical patent/KR970068677A/en
Application granted granted Critical
Publication of KR100202564B1 publication Critical patent/KR100202564B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • 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)
  • Processing Of Color Television Signals (AREA)

Abstract

본 발명은 칼라 레벨 조정장치에 관한 것으로, 종래에는 칼라영상신호의 칼라 버스트 레벨이 변하게 되면 티브이(TV)의 자동색상제어(ACC)회로에 의하여 온스크린 디스플레이 복합신호중에서 칼라신호가 심하게 변동되어 방송국마다 온스크린 디스플레이 복합신호중에서 칼라신호가 심하게 변동되어 방송국마다 온스크린 디스플레이(OSD)의 채도(saturation)이 변동되거나 심하면 왜곡 현상이 일어나는 문제점이 있다.Conventionally, when a color burst level of a color video signal is changed, a color signal of an on-screen display composite signal is seriously fluctuated by an automatic color control (ACC) circuit of a television (TV) There is a problem that the saturation of the on-screen display (OSD) is fluctuated or the distortion occurs when the color signal is severely fluctuated among the on-screen display composite signals.

따라서 본 발명은, 칼라영상신호의 칼라 버스트 레벨에 비례하게 온스크린 디스플레이의 색신호 크기를 변화시켜 주도록 하여 칼라 버스트 레벨에 상관없이 온스크린 칼라 신호를 일정하게 유지하도록 함으로써 칼라영상신호의 칼라 버스트 레벨이 심하게 변하더라도 티브이(TV)에 디스플레이 되는 온스크린 디스플레이(OSD)의 채도가 일정하게 유지되고 왜곡도 일어나지 않도록 한다.Therefore, according to the present invention, the size of the color signal of the on-screen display is changed in proportion to the color burst level of the color video signal, so that the on-screen color signal is kept constant regardless of the color burst level, Even if the brightness is changed, the saturation of the on-screen display (OSD) displayed on the TV is kept constant and distortion is prevented.

Description

칼라 레벨 조정장치Color level adjustment device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제 2 도는 본 발명의 칼라 레벨 조정장치의 회로구성도, 제 3 도는 제 2 도에서, 레벨 검출부의 상세도, 제 4 도는 제 2 도에서, 온스크린 디스플레이의 칼라 레벨과 칼라영상신호의 칼라 버스트 레벨의 관계도.FIG. 2 is a circuit diagram of the color level adjusting apparatus of the present invention. FIG. 3 is a detailed view of the level detecting unit. FIG. 4 is a view of the color level of the on- Level relationship diagram.

Claims (3)

수신되는 칼라영상신호를 입력받아 수평 및 수직동기신호를 분리함과 아울러 버스트 게이트 펄스를 검출하여 출력하는 동기분리수단과; 상기 동기분리수단에서 출력되는 동기신호에 온스크린 디스플레이신호를 동기하고 그 동기한 색신호와 FB신호를 출력하는 온스크린 디스플레이신호 발생수단과; 상기 온스크린 디스플레이신호 발생수단에서 발생된 색신호에 대하여 행렬변환과 칼라 변조 및 가산연산을 행하여 얻어진 복합 온 스크린 디스플레이신호를 출력하는 신호 처리수단과; 칼라영상신호의 칼라 버스트 레벨에 비례하게 신호 처리수단으로 부터 제공되는 온스크린 디스플레이의 칼라신호의 크기를 변화시켜 주는 칼라 레벨 조정수단과; 상기 신호 처리수단으로 부터 발생되는 복합 온스크린 디스플레이신호와 칼라영상신호에 대하여 클램핑 및 스위칭 동작을 수행하여 칼라영상신호에 온스크린 디스플레이신호를 삽입하여 출력하는 출력수단으로 구성함을 특징으로 하는 칼라 레벨 조정장치.A sync separating means for separating the horizontal and vertical sync signals from the received color video signal and detecting and outputting burst gate pulses; An on-screen display signal generating means for synchronizing an on-screen display signal to a synchronizing signal outputted from the synchronizing separating means and outputting a synchronized color signal and an FB signal; A signal processing means for outputting a composite on-screen display signal obtained by performing matrix conversion, color modulation and addition on color signals generated by the on-screen display signal generating means; A color level adjusting means for changing a size of a color signal of the on-screen display provided by the signal processing means in proportion to a color burst level of the color video signal; Screen display signal and a color image signal generated from the signal processing means to perform clamping and switching operations to insert an on-screen display signal into a color video signal and output the color screen signal. Adjusting device. 제1항 있어서, 칼라 레벨 조정수단은 수신되는 칼라영상신호의 칼라 버스트 레벨값을 직류전압으로 변환하여 검출하는 레벨 검출수단과, 상기 칼라 변조수단에서 입력되는 온스크린 디스플레이의 칼라신호를 상기 레벨 검출수단에서 출력되는 직류전압에 비례하게 증폭시켜 출력하는 온스크린 디스플레이 레벨 조절수단으로 구성함을 특징으로 하는 칼라 레벨 조정장치.2. The apparatus according to claim 1, wherein the color level adjusting means comprises level detecting means for detecting and converting a color burst level value of the received color video signal into a DC voltage, And an on-screen display level adjusting means for amplifying and outputting the amplified voltage in proportion to the DC voltage outputted from the means. 제2항 있어서, 레벨 검출수단은 입력되는 칼라영상신호를 필터링하는 필터링수단과, 동기 분리수단에서 검출된 버스트 게이트 펄스에 따라 상기 필터링수단에서 출력되는 신호 또는 전원단자의 출력을 선택하는 스위칭 수단과, 상기 스위칭수단에서 제공된 신호로 부터 엔벨로프를 검출하는 엔벨로프 검출수단과, 상기 동기 분리수단에서 검출된 버스트 게이트 펄스를 일정시간 지연시키는 지연수단과, 상기 지연수단을 통해 지연된 버스트 게이트 펄스의 상승 에지에서 상기 엔벨로프 검출수단의 엔벨로프를 샘플 및 홀딩하고 다음의 상승에지가 올 때까지 직류전압으로 유지시켜 주는 샘플/홀딩수단으로 구성함을 특징으로 하는 칼라 레벨 조정장치.3. The image pickup apparatus according to claim 2, wherein the level detecting means comprises: filtering means for filtering the input color video signal; switching means for selecting an output of the signal outputted from the filtering means or an output of the power supply terminal in accordance with the burst gate pulse detected by the synchronous separation means; An envelope detection means for detecting an envelope from a signal provided by the switching means, a delay means for delaying the burst gate pulse detected by the synchronization separating means for a predetermined time, and a delay means for delaying the rising edge of the burst gate pulse delayed by the delay means And sample / holding means for sampling and holding the envelope of the envelope detection means and maintaining the envelope until a next rising edge is reached. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960007317A 1996-03-19 1996-03-19 The color level adjusting apparatus KR100202564B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960007317A KR100202564B1 (en) 1996-03-19 1996-03-19 The color level adjusting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960007317A KR100202564B1 (en) 1996-03-19 1996-03-19 The color level adjusting apparatus

Publications (2)

Publication Number Publication Date
KR970068677A true KR970068677A (en) 1997-10-13
KR100202564B1 KR100202564B1 (en) 1999-06-15

Family

ID=19453380

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960007317A KR100202564B1 (en) 1996-03-19 1996-03-19 The color level adjusting apparatus

Country Status (1)

Country Link
KR (1) KR100202564B1 (en)

Also Published As

Publication number Publication date
KR100202564B1 (en) 1999-06-15

Similar Documents

Publication Publication Date Title
KR940003050B1 (en) Television receiver responsive to plural video signals
KR970068677A (en) Color level adjustment device
US6441871B1 (en) Method for correcting amplitude of synchronizing signal of composite video signal and device therefor
KR100294234B1 (en) Digital tv set capable of performing caption processing for analog signals
EP0707421A2 (en) Screen automatic expanding display apparatus for wide screen television
KR970010396B1 (en) A color compensation circuit for picture in picture on television screen
KR970078503A (en) Sub screen position automatic moving device for watching main screen caption
KR100209952B1 (en) Pip-type trlevision having a common agc
KR100209378B1 (en) Apparatus for compensating black level of brightness signal
KR910003623Y1 (en) Conversion control circuit of teletext picture screen
KR0124385B1 (en) Apparatus of compensating position on screen display
KR930001756Y1 (en) Apparatus for adjusting brightness and color of on screen display characters automatically
KR100197380B1 (en) Apparatus for directing the generation of data as channel transfer in pdp tv
KR100264323B1 (en) Method and apparatus of automatic kinescope bias signal level adjustment function in television
KR920004990Y1 (en) Color-automatic conversion circuit for on screen display character
KR100197381B1 (en) Apparatus for muting the video digital in pdp in tv
KR100226842B1 (en) Video signals processing device and method thereof
KR100216908B1 (en) Television having display position control function
KR200146397Y1 (en) Sync. signal stabilization circuit
KR970019424A (en) TV automatic search channel signal level display device
KR970076692A (en) Vishal's dual screen processor
KR970009282A (en) Dual screen device of TV receiver
KR940017907A (en) TV color signal correction circuit
KR19980043397A (en) Aspect ratio automatic conversion display apparatus and method of television receiver
KR970057754A (en) Screen size automatic switching device by transmission data of TV

Legal Events

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

Payment date: 20010926

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee