KR970057191A - On Screen Character Display - Google Patents

On Screen Character Display Download PDF

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Publication number
KR970057191A
KR970057191A KR1019950054985A KR19950054985A KR970057191A KR 970057191 A KR970057191 A KR 970057191A KR 1019950054985 A KR1019950054985 A KR 1019950054985A KR 19950054985 A KR19950054985 A KR 19950054985A KR 970057191 A KR970057191 A KR 970057191A
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KR
South Korea
Prior art keywords
screen
signal
field
outputting
display device
Prior art date
Application number
KR1019950054985A
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Korean (ko)
Inventor
박중석
Original Assignee
구자홍
Lg 전자 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.)
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Publication date
Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019950054985A priority Critical patent/KR970057191A/en
Publication of KR970057191A publication Critical patent/KR970057191A/en

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Abstract

본 발명은 TV 또는 VCR의 온스크린(On Screen) 문자 표시장치에 관한 것으로, 종래 온스크린 문자 표시장치에 의하여 화면(CPT)에 문자를 표시하는 도중에는 시청자의 입장에서 볼 때 방송화면이 온스크린 문자에 의해 가려지는 것으로 느껴짐으로 인해 방송화면 시청에 불편한 문제점이 있다. 본 발명은 온스크린 발생부에서 출력되는 온스크린 절환신호와 수평동기신호에 로크된 클럭을 조합하여 두개의 새로운 온스크린 절환신호를 만든 후, 온스크린 문자를 표시할 때 이 두개의 온스크린 절환신호를 제1필드와 제2필드 일때를 구분하여 출력하게 하여 온스크린 문자 영역에서 종래 표시되는 부분에 절반 정도를 표시함으로써, 시청자로 하여금 온스크린 문자가 표시되더라도 방송화면을 볼 수 있게끔 하였다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-screen character display device of a TV or a VCR, wherein a broadcast screen is on-screen character when viewed from the viewer's point of view while displaying characters on a screen by a conventional on-screen character display device. There is an uncomfortable problem in viewing the broadcast screen due to being felt to be covered by. The present invention creates two new on-screen switching signals by combining the on-screen switching signal output from the on-screen generator and the clock locked to the horizontal synchronization signal, and then displays the two on-screen switching signals when displaying the on-screen characters. By outputting when the first field and the second field is distinguished to display about half of the conventionally displayed portion in the on-screen character area, the viewer can view the broadcast screen even if the on-screen character is displayed.

Description

온스크린(On Screen) 문자 표시장치.On Screen Character Display.

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

제3도는 본 발명 온스크린 문자 표시장치의 구성도.3 is a configuration diagram of the on-screen character display device of the present invention.

제4도는 제3도에 의해 화면에 표시되는 문자의 일예를 나타낸 도.4 is a diagram showing an example of characters displayed on the screen by FIG.

제5도는 제3도에서 각부의 출력 타이밍도.5 is an output timing diagram of each part in FIG.

Claims (4)

방송에 의한 화면의 휘도신호(Y)와 색차신호(R-Y)(B-Y)를 조합하여 3개의 색신호(RM,GM,BM)를 만드는 메트릭스와, 온스크린 문자를 표시하기 위한 색신호 (RO,GO,BO)와 온스크린 절환신호(BL)을 출력하는 온스크린 발생부와, 상기 온스크린 발생부의 색신호(RO,GO,BO)와 상기 방송화면의 색신호(RM,GM,BM)를 입력받아 외부로부터의 선택신호에 따라 이 두가지의 색신호(RO,GO,BO)(RM,GM,BM) 중에 한가지의 색신호를 선택하여 출력하는 스위치부와, 이 스위치부에서 출력되는 색신호(R,G,B)를 증폭하는 증폭부와, 증폭된 색신호를 표시하는 표시부(CPT)로 구성된 온스크린 문자 표시장치에 있어서, 동기분리부(60)의 수평, 수직동기신호로부터 필드를 판별하는 필드판별신호를 발생하는 필드인식부와, 상기 수평동기신호에 로크(Lock)된 클럭 (CLK)을 출력하는 클럭발생부와, 상기 클럭(CLK)과 상기 온스크린 발생부로부터의 온스크린 절환신호(BL)을 입력받아 이를 조합하여 서로 반대의 논리값을 갖는 두개의 온스크린 절환신호(SBL)()를 만들어 이를 필드판별신호에 따라 구분하여 상기 스위치부의 스위치 선택신호로 출력하는 온스크린 절환신호 변환부로 구성하여 된 것을 특징으로 하는 온스크린 문자 표시장치.A matrix that combines the luminance signal (Y) and the color difference signal (RY) (BY) of the screen by broadcasting to create three color signals (R M , G M , B M ), and a color signal (R) for displaying on-screen characters. O , G O , B O ) and an on-screen generator for outputting the on-screen switching signal BL, color signals R O , G O , B O of the on-screen generator and color signals R M of the broadcast screen. , G M , B M ) is used to select and output one of the two color signals (R O , G O , B O ) (R M , G M , B M ) according to the selection signal from the outside. An on-screen character display device comprising a switch section, an amplifier section for amplifying the color signals R, G, and B output from the switch section, and a display section (CPT) for displaying the amplified color signals, wherein the synchronization separator section 60 is used. Outputs a field recognition unit for generating a field discrimination signal for discriminating a field from the horizontal and vertical synchronization signals, and a clock (CLK) locked to the horizontal synchronization signal. And a clock generator, the clock (CLK) and on the two-screen switching to the on-screen-screen input switching signal (BL) from the generation unit receives this combination together with a logic value of the reverse signal (SBL) ( And an on-screen switching signal conversion unit for dividing the signal according to the field discrimination signal and outputting it as a switch selection signal of the switch unit. 제1항에 있어서, 온스크린 절환신호 변환부는 상기 클럭(CLK)과 온스크린의 온스크린 절환신호(BL)를 오아 조합하여 새로운 온스크린 절환신호를 출력하는 제1오아게이트와, 상기 클럭(CLK)을 반전시키는 인버터와, 이 반전된 클럭(CLK)과 온스크린 절환신호(BL)을 오아 조합하여 또다른 새로운 온스크린 절환신호를 출력하는 제2오아게이트와, 상기 필드판별신호에 의해 두개의 새로운 온스크린 절환신호에서 하나를 선택 출력하는 선택수단으로 구성하여 된 것을 특징으로 하는 온스크린 문자 표시장치.The display device of claim 1, wherein the on-screen switching signal converter comprises a first ogate for outputting a new on-screen switching signal by combining and combining the clock CLK and the on-screen switching signal BL of the on-screen and the clock CLK. Inverter for inverting?), A second ogate for outputting another new on-screen changeover signal by combining the inverted clock CLK and the on-screen changeover signal BL, and the two fields by the field discrimination signal. An on-screen character display device comprising a selection means for selectively outputting one of the new on-screen switching signals. 제2항에 있어서, 선택수단은 제어신호에 따라 두개의 입력중에서 하나를 선택하여 출력하는 스위치로 이루어진 것을 특징으로 하는 온스크린 문자 표시장치.The on-screen character display device according to claim 2, wherein the selecting means comprises a switch for selecting and outputting one of two inputs according to a control signal. 제1항에 있어서, 필드인식부는 홀수 필드일때는 저전위를, 짝수 필드일때는 고전위를 출력하는 것을 특징으로 하는 온스크린 문자 표시장치.The on-screen character display device according to claim 1, wherein the field recognition unit outputs a low potential for an odd field and a high potential for an even field. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950054985A 1995-12-22 1995-12-22 On Screen Character Display KR970057191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950054985A KR970057191A (en) 1995-12-22 1995-12-22 On Screen Character Display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950054985A KR970057191A (en) 1995-12-22 1995-12-22 On Screen Character Display

Publications (1)

Publication Number Publication Date
KR970057191A true KR970057191A (en) 1997-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950054985A KR970057191A (en) 1995-12-22 1995-12-22 On Screen Character Display

Country Status (1)

Country Link
KR (1) KR970057191A (en)

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