KR930002683Y1 - Color converting circuit - Google Patents

Color converting circuit Download PDF

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Publication number
KR930002683Y1
KR930002683Y1 KR2019900013666U KR900013666U KR930002683Y1 KR 930002683 Y1 KR930002683 Y1 KR 930002683Y1 KR 2019900013666 U KR2019900013666 U KR 2019900013666U KR 900013666 U KR900013666 U KR 900013666U KR 930002683 Y1 KR930002683 Y1 KR 930002683Y1
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South Korea
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color
screen
signals
switching
switching unit
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KR2019900013666U
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Korean (ko)
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KR920005585U (en
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정진국
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주식회사 금성사
이헌조
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/44504Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/12Picture reproducers
    • H04N9/16Picture reproducers using cathode ray tubes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals
    • H04N9/67Circuits for processing colour signals for matrixing

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

내용 없음.No content.

Description

온 스크린 색상의 자동 보색 변환회로Automatic complementary color conversion circuit for on screen colors

제1도는 종래의 온 스크린 표시 시스템에 대한 블록도.1 is a block diagram of a conventional on-screen display system.

제2도는 본 고안 온 스크린 색상의 자동 보색 변환 블록도.2 is an automatic complementary color conversion block diagram of the screen color of the present invention.

제3도는 색광의 혼합관계를 보인 설명도.3 is an explanatory diagram showing a mixing relationship of color light.

제4도는 색광의 보색관계를 보인 표.4 is a table showing the complementary color relationship of color light.

제5도는 색차신호에 따른 트랜지스(Q1-Q6)의 동작관계 표.5 is a table showing the operation relationship of the transistors Q1-Q6 according to the color difference signal.

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

1 : 색신호매트릭스부 2 : 리모콘1: color signal matrix unit 2: remote control

3 : 마이콤 4A : R-Y/R스위칭부3: micom 4A: R-Y / R switching unit

4B : G-Y/G스위칭부 4C : B-Y/B스위칭부4B: G-Y / G switching part 4C: B-Y / B switching part

5A : R구동부 5B : G구동부5A: R drive part 5B: G drive part

5C : B구동부 CPT : 컬러픽쳐튜브5C: B drive part CPT: Color picture tube

Q1-Q6 : 트랜지스터 R1-R9 : 저항Q1-Q6: Transistor R1-R9: Resistor

본 고안은 온스크린 표시(On Screen Display : OSD)기능을 갖춘 칼라텔리비젼 수상기의 색변환에 관한 것으로, 특히 온 스크린 표시 색상이 화면색상과 동일할 때 그 온 스크린 표시 색상이 자동적으로 보색으로 변환되게 한 온 스크린 색상의 자동 보색 변환회로에 관한 것이다. 제1도는 종래의 온 스크린 표시 시스템에 대한 블록도러서 이를 통해 종래기술을 살펴보면 다음과 같다.The present invention relates to color conversion of a color television receiver equipped with an On Screen Display (OSD) function. Particularly, when the on-screen display color is the same as the screen color, the on-screen display color is automatically converted into a complementary color. An automatic complementary color conversion circuit of an on-screen color is provided. FIG. 1 is a block diagram of a conventional on-screen display system.

적색(R)용 신호, 녹색(G)용 신호, 청색(B)용 신호는 색매트릭스부(1)를 통해 색차신호(R-Y), (G-Y), (B-Y)로 출력되어 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)를 각기 통한 후, 다시 R, G, B 구동부(5A, 5B, 5C)를 각각 통해 해당색신호가 컬러픽쳐튜브(CPT)에 디스플레이된다.The red (R) signal, the green (G) signal, and the blue (B) signal are output as color difference signals (RY), (GY), and (BY) through the color matrix unit 1, and then the RY / R switching unit 4A, GY / G switching unit 4B and BY / B switching unit 4C, respectively, and then the corresponding color signals through R, G, and B driving units 5A, 5B, and 5C, respectively. CPT).

이와 같은 상태에서 시청자가 리모콘(2)상에서 온 스크린 키이를 선택하면 마이콤(3)의 출력포트(P2-P4)에 온 스크린 표시용 R, G, B신호가 출력되어 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)에 인가되는데, 이때 상기 마이컴(3)은 포트(P1)를 통해 수평주사선(1H)사이에서 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)를 제어하므로 상기 색매트릭스부(1)에서 출력된 색차신호(R-Y), (G-Y), (B-Y)에 마이콤(3)에서 출력된 색신호(R), (G), (B)삽입되어 상기 컬러픽쳐튜브(CPT)에 온 스크린이 디스플레이된다. 그러나 이와 같은 온 스크린 표시 시스템에 있어서는 주화면상의 색상과 온 스크린 색상이 서로 같을 경우 시청자는 온 스크린으로 표시되는 정보를 인지할 수 없게 되는 문제점이 있었다.In this state, when the viewer selects the on-screen key on the remote controller 2, the R, G, and B signals for on-screen display are output to the output ports P2-P4 of the microcomputer 3, and the RY / R switching unit ( 4A), a GY / G switching unit 4B and BY / B switching unit 4C, wherein the microcomputer 3 is connected to the RY / R switching unit between the horizontal scan line 1H through the port P1. 4A, the GY / G switching section 4B and the BY / B switching section 4C, so that the color difference signals RY, GY and BY are output to the color difference signals RY, GY and BY. Color signals (R), (G), and (B) output from 3) are inserted to display an on-screen on the color picture tube (CPT). However, in such an on-screen display system, when the color on the main screen and the on-screen color are the same, there is a problem that the viewer cannot recognize the information displayed on the on-screen.

본 고안은 이와 같은 문제점을 해결하기 위하여 온 스크린 표시 색상이 화면색상과 동일할 때 그 온 스크린 표시 색상을 자동적으로 보색화시킬 수 있는 보색회로를 안출한 것으로 이를 첨부한 도면에 의하여 상세히 설명한다. 제2도는 본 고안 온 스크린 색상의 자동 보색 변환 회로도로서 이에 도시한 바와 같이, 색차신호(R-Y), (G-Y), (B-Y)를 출력하는 색매트릭스부(1)와, 각종 키이신호를 송출하는 리모콘(2)과, 상기 리모콘(2)으로부터 입력되는 신호에 따라 시스템을 제어하고 온 스크린 표시용 색신호(R, G, B)를 출력하는 마이콤(3)과, 상기 마이콤(3)의 제어에 따라 상기 색차신호(R-Y), (G-Y), (B-Y)나 색신호(R), (G), (B)를 선택하여 출력하는 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)와, 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)로부터 입력되는 신호에 따른 R, G, B구동신호를 컬러픽쳐튜브(CPT)에 출력하는 R, G, B구동부(5A-5C)로 구성된 온 스크린 표시 시스템에 있어서, 상기 색매트릭스부(1)의 색차신호(R-Y), (G-Y), (B-Y)단자를 트랜지스터(Q1), (Q3), (Q5)의 베이스에 각각 접속한 후, 상기 마이콤(3)의 출력 포트(P2), (P3), (P4)를 상기 트랜지스터(Q1), (Q3), (Q5)의 콜렉터에 각기 접속하며, 이들의 에미터를 트랜지스터(Q2), (Q4), (Q6)의 베이스에 접속하고, 그 트랜지스터(Q2), (Q4), (Q6)의 콜렉터를 상기 R/Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)에 각기 접속하여 구성하였으며, 여기서 미설명부호 6은 보색변환부이고, 이와 같이 구성된 본 고안의 작용 및 효과를 제3도 내지 제5도를 참조하여 상세히 설명하므로 다음과 같다.In order to solve this problem, the present invention devised a complementary color circuit which can automatically complement the on-screen display color when the on-screen display color is the same as the screen color, which will be described in detail with reference to the accompanying drawings. 2 is an automatic complementary color conversion circuit diagram of an on-screen color of the present invention, and as shown therein, a color matrix unit 1 for outputting color difference signals RY, GY, and BY, and for transmitting various key signals. A remote controller 2, a microcomputer 3 for controlling the system according to a signal input from the remote controller 2, and outputting color signals R, G, and B for on-screen display, and for controlling the microcomputer 3; RY / R switching unit 4A and GY / G switching unit 4B for selecting and outputting the color difference signals RY, GY, BY, or color signals R, G, and B accordingly. R, G, and B driving according to signals input from the BY / B switching unit 4C, the RY / R switching unit 4A, the GY / G switching unit 4B, and the BY / B switching unit 4C. In the on-screen display system composed of R, G, and B driving units 5A-5C for outputting a signal to the color picture tube CPT, the color difference signals RY, GY, and ( BY) terminals at the bases of transistors Q1, Q3, and Q5, respectively. After connection, the output ports P2, P3, and P4 of the microcomputer 3 are connected to the collectors of the transistors Q1, Q3, and Q5, respectively, and their emitters are connected to the transistors ( Q2), Q4, and Q6 are connected to the base, and the collectors of the transistors Q2, Q4, and Q6 are connected to the R / Y / R switching portions 4A and GY / G switching portions ( 4B) and BY / B switching unit 4C, respectively, wherein the reference numeral 6 is a complementary color conversion unit, and the operation and effect of the present invention configured as described above will be described in detail with reference to FIGS. 3 to 5. It is as follows.

티브이의 색매트릭스부(1)에서 출력되는 색차신호(R-Y, G-Y, B-Y)는 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)에 인가됨과 아울러 트랜지스터(Q1), (Q3), (Q5)에 각각 인가되는데, 이와 같은 상태에서 시청자가 리모콘(2)상의 온 스크린 키이를 선택하면 마이콤(3)의 포트(P2-P4)에서 온 스크린용 색차신호(R, G, B)가 출력되어 상기 트랜지스터(Q1, Q3, Q5)의 콜렉터에 각기 인가된다. 이에 따라 상기 마이콤(3)에서 출력되는 온 스크린용 색신호(R, G, B)는 상기 색매트릭스부(1)에서 출력되는 색차신호(R-Y, G-Y, B-Y)에 따라 각각의 역신호(보색)로 변환되는데, 이하, 이를 몇가지 예로하여 설명한다. 제5도에 도시한 바와 같이, 화면색이 검은색인 상태에서 온 스크린을 표현하고자 할 때, 상기 색매트릭스부(1)에서는 색차신호(R-Y), (G-Y), (B-Y)가 모두 저전위이므로 이때 트랜지스터(Q1), (Q3), (Q5)는 모두 오프되고, 이에 따라 트랜지스터(Q2), (Q4), (Q6)도 모두 오프된다.The color difference signals RY, GY, BY output from the color matrix part 1 of the TV are applied to the RY / R switching part 4A, GY / G switching part 4B, and BY / B switching part 4C. In addition, it is applied to the transistors Q1, Q3, and Q5, respectively. In this state, when the viewer selects the on-screen key on the remote controller 2, the screen is used for the on-screen at the ports P2-P4 of the microcomputer 3; The color difference signals R, G, and B are output and applied to the collectors of the transistors Q1, Q3, and Q5, respectively. Accordingly, the on-screen color signals R, G, and B output from the microcomputer 3 correspond to respective inverse signals (complementary colors) according to the color difference signals RY, GY, and BY output from the color matrix unit 1. This is described below with reference to some examples. As shown in FIG. 5, when the screen color is black and the screen is to be expressed, in the color matrix part 1, the color difference signals RY, GY, and BY are all low potential. At this time, the transistors Q1, Q3, and Q5 are all turned off, and thus, the transistors Q2, Q4, and Q6 are all turned off.

이로인해 고정위의 전원단자(Vcc)전압이 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)의 일측입력으로 제공되고, 그 스위칭부(4A-4C)는 상기 마이콤(3)의 포트(P1)에서 출력되는 수평주사선의 어느 위치에 온 스크린 신호를 실을 것인가에 따른 신호는 받아서 저전위의 색차신호(R-Y), (G-Y), (B-Y)와 보색변환부(6)에서 출력되는 고전위의 색신호(R, G, B)를 스위칭시킴으로 온 스크린이 표시되는데, 이 고전위의 온 스크린 색(R, G, B)를 모두 혼합하면 백색이 되어 검은색의 화면에 흰색의 온 스크린 신호가 디스플레이 된다.As a result, the power supply terminal (Vcc) voltage of the fixed phase is provided to one input of the RY / R switching unit 4A, GY / G switching unit 4B, and BY / B switching unit 4C, and the switching unit ( 4A-4C) receive signals according to which position of the horizontal scan line to be output from the port P1 of the microcomputer 3 to receive the on-screen signal, and the low-potential color difference signals RY, GY, and ( BY) and on-screen display by switching the high-potential color signals (R, G, B) output from the complementary color conversion unit 6, and if the on-screen colors (R, G, B) of the high potential are mixed together It becomes white and the white on-screen signal is displayed on the black screen.

한편 화면색이 파란색이면, 상기의 색차신호(R-Y), (G-Y)는 저전위가 되고, 색차신호(B-Y)는 고전위가 되므로 상기 트랜지스터(Q1, Q2)가 오프되고, 트랜지스터(Q3, Q4)도 오프되어 보색변환부(6)의 출력색신호중 색신호(R, G)는 고전위, 색신호(B)은 저전위가 된다. 이로 인하여 상기 마이콤(3)의 포트(P1)에 출력되는 제어신호에 의해 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)가 스위칭되면 화면색이 파란색의 보색인 노란색이 온 스크린으로 디스플레이된다.On the other hand, if the screen color is blue, the color difference signals RY and GY become low potential, and the color difference signal BY becomes high potential, so that the transistors Q1 and Q2 are turned off, and the transistors Q3 and Q4. ) Is turned off so that the color signals R and G of the output color signals of the complementary color converter 6 become high potential and the color signal B becomes low potential. Therefore, when the RY / R switching unit 4A, GY / G switching unit 4B, and BY / B switching unit 4C are switched by the control signal output to the port P1 of the microcomputer 3, the screen is displayed. Yellow, the complementary color of blue, is displayed on-screen.

한편, 화면색이 초록인 경우, 상기 색차신호(R-Y), (B-Y)는 저전위, 색차신호(G-Y)는 고전위가 되므로 상기 트랜지스터(Q1, Q2), (Q5, Q6)가 오프되는 반면 트랜지스터(Q3, Q4)는 온되어 상기와 같이 마이콤(3)의 제어로 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)가 스위칭되면 R구동부(5A), B구동부(5C)를 통해 화면색 초록의 보색인 마젠타색이 온 스크린 색으로 디스플레이된다.On the other hand, when the screen color is green, the transistors Q1, Q2, Q5 and Q6 are turned off because the color difference signals RY and BY have low potentials and the color difference signal GY have high potentials. When the transistors Q3 and Q4 are turned on and the RY / R switching section 4A, GY / G switching section 4B and BY / B switching section 4C are switched under the control of the microcomputer 3 as described above, the R driving section 5A and 5C, magenta, the complementary color of the screen color green, is displayed on-screen color.

이와 같은 동작에 의해 화면색이 시안색일 때 온 스크린 색은 빨강이 되고, 화면색이 빨강이면 온 스크린 색은 시안색이 되며, 화면색이 노랑색이면 온 스크린 색은 파랑이 되고, 화면색이 흰색이면 온 스크린 색은 검은색이 된다. 여기서, 제3도는 색광의 혼합관계를 보인 것이고, 제4도는 색상의 보색 관계를 보인 것이며, 제5도는 온 스크린 요구에 따른 트랜지스터(Q1-Q6)의 동작관계를 보인 것이다.By this operation, when the screen color is cyan, the on-screen color is red. When the screen color is red, the on-screen color is cyan. When the screen color is yellow, the on-screen color is blue, and the screen color is white. On screen color is black. Here, FIG. 3 shows a mixing relationship of color light, FIG. 4 shows a complementary color relationship, and FIG. 5 shows an operation relationship of transistors Q1-Q6 according to on-screen requirements.

이상에서 상세히 설명한 바와 같이 온 스크린 색상이 화면색과 일치되는 경우를 완전히 배제시켜 시청자는 언제나 온 스크린 정보를 확실하게 인지할 수 있는 이점이 있다.As described in detail above, the on-screen color completely excludes the case where the screen color coincides with the viewer, so that the on-screen information can be reliably recognized at all times.

Claims (2)

색차신호(R-Y), (G-Y), (B-Y)를 출력하는 색매트릭스부(1)와, 리모콘(2)으로부터 스캔되는 키이정보에 따라 시스템 전체를 제어하고 온 스크린용 색신호(R, G, B)를 출력하는 마이콤(3)과, 상기 마이콤(3)의 제어에 따라 상기 색차신호(R-Y, G-Y, B-Y)와 색신호(R, G, B)를 선택하는 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)로 구성된 온 스크린 시스템에 있어서, 상기 색매트릭스부(1)의 출력신호에 따라 상기 마이콤(3)에서 출력되는 색신호(R, G, B)를 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)에 선별 출력하는 보색변환부(6)를 추가시켜 구성된 것을 특징으로 하는 온 스크린 색상의 자동 보색 변환회로.On-screen color signals (R, G, B) for controlling the entire system in accordance with the color matrix unit (1) for outputting the color difference signals (RY), (GY), (BY) and the key information scanned from the remote controller (2). ) And a RY / R switching unit 4A for selecting the color difference signals RY, GY, BY and the color signals R, G, B according to the control of the microcomputer 3, In the on-screen system consisting of a GY / G switching section 4B and a BY / B switching section 4C, the color signals R and G output from the micom 3 in accordance with the output signal of the color matrix section 1 are provided. , B) is configured by adding a complementary color conversion unit 6 for selectively outputting the RY / R switching unit 4A, GY / G switching unit 4B, and BY / B switching unit 4C. Automatic complementary color conversion circuit for screen colors. 제1항에 있어서, 상기 색매트릭스부(1)의 색차신호(R-Y), (G-Y), (B-Y)단자를 트랜지스터(Q1), (Q3), (Q5)의 베이스에 각기 접속하고, 상기 마이콤(3)의 색신호(R,, G, B) 출력포트(P2-P4)를 그 트랜지스터(Q1), (Q3), (Q5)의 콜렉터에 각각 접속한 후, 그 트랜지스터(Q1), (Q3), (Q5)의 에미터를 다시 트랜지스터(Q2), (Q4), (Q6)의 베이스에 각기 접속하여 이들의 콜렉터를 상기 R-Y/R스위칭부(4A), G-Y/G스위칭부(4B), B-Y/B스위칭부(4C)의 입력측에 각각 접속하여 상기 보색변환부(6)를 구성한 것을 특징으로 하는 온 스크린 색상의 자동 보색 변환회로.2. The color difference signal RY, GY, and BY of the color matrix unit 1 are respectively connected to the bases of the transistors Q1, Q3, and Q5, and the microcomputer is connected. The output signals P2-P4 of the color signals R, G, and B of (3) are connected to the collectors of the transistors Q1, Q3, and Q5, respectively, and then the transistors Q1 and Q3. ), And the emitters of (Q5) are connected to the bases of the transistors (Q2), (Q4), and (Q6), respectively, and their collectors are connected to the RY / R switching portions 4A and GY / G switching portions 4B. And the complementary color conversion unit (6) configured to be connected to the input side of the BY / B switching unit (4C), respectively, to configure the complementary color conversion circuit of the on-screen color.
KR2019900013666U 1990-08-31 1990-08-31 Color converting circuit KR930002683Y1 (en)

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KR930002683Y1 true KR930002683Y1 (en) 1993-05-19

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