KR850002436Y1 - Chrominance processing circuit - Google Patents

Chrominance processing circuit Download PDF

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KR850002436Y1
KR850002436Y1 KR2019830006994U KR830006994U KR850002436Y1 KR 850002436 Y1 KR850002436 Y1 KR 850002436Y1 KR 2019830006994 U KR2019830006994 U KR 2019830006994U KR 830006994 U KR830006994 U KR 830006994U KR 850002436 Y1 KR850002436 Y1 KR 850002436Y1
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color
signal
transistors
output
resistors
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KR2019830006994U
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KR850002253U (en
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윤홍중
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삼성전자주식회사
정재은
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/64Circuits for processing colour signals
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45Differential amplifiers
    • H03F3/45071Differential amplifiers with semiconductor devices only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/44Colour synchronisation

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

Abstract

내용 없음.No content.

Description

색차신호 발생회로Color difference signal generation circuit

제1도는 본 고안의 계통도.1 is a schematic diagram of the present invention.

제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.

제3도는 본 고안의 입력 파형도.3 is an input waveform diagram of the present invention.

제4도는 각 단의 출력특성 파형도.4 is an output characteristic waveform diagram of each stage.

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

1 : 시스콤(SYSTEM CONTROL COMPUTER) 2 : 색신호 조합부1: SYSTEM CONTROL COMPUTER 2: Color signal combination

3 : 색신호 증폭부 4 : 자동 증폭부3: color signal amplifier 4: automatic amplifier

CM : 컬러모니터 SYNC : 부극성 동기신호CM: Color Monitor SYNC: Negative Sync Signal

본 고안은 컬러텔레비젼에 있어서 보다 많은 색상을 표현할 수 있는 색차신호 발생회로에 관한 것이다.The present invention relates to a color difference signal generation circuit capable of expressing more colors in color television.

종래의 컬러모니터의 색상 세퍼레이트(Separate) 방식에서는 원색신호인 빨강, 파랑, 초록과 수평 및 수직동기에 의해서 8가지 색상만이 브라운관에 매트릭스되어 가해지기 때문에 색상을 자유자재로 표현하지 못하는 단점을 가지고 있다.In the color separation method of the conventional color monitor, only 8 colors are matrixed and applied to the CRT by the primary, red, blue, green, and horizontal and vertical synchronous signals, so that colors cannot be expressed freely. have.

본 고안은 상기한 종래 컬러모니터의 세페례이트방식을 개선한 것으로 색차신호를 여러단으로 조합하고 증폭하여 여러가지 자연색을 충분히 표현할 수 있도록 된 것이다.The present invention is to improve the Sepeite method of the conventional color monitor, it is possible to express various natural colors by combining and amplifying the color difference signal in multiple stages.

이하 본 고안의 구성 및 작용, 효과를 예시도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, the configuration, operation, and effects of the present invention will be described in detail with reference to the accompanying drawings.

본 고안은 컬러 모니터(CM)측으로 적정수준의 신호를 인가하는 시스콤(1)의 기본 색차신호 출력단(XRGE1)(XRGB2)(XRGB4)(XRGB8)에 트랜지스터(Q1)(Q2)(Q3)(Q4)와 동기신호용 트랜지스터(Q5)(Q6) 및 저항(R22-R37)으로 구성되는 색신호 조합부(2)를 연결하고, 색신호 조합부(2) 출력단(A)(B)(C)에는 트랜지스터(Q7)(Q10)(Q8)(Q11)(Q9)(Q12)가 각각 직렬로 접속된 색신호 증폭부(3)를 연결하며 색신호 증폭부(3)의 출력점(D)(E)(F)에는 트랜지스터(Q13)(Q16)(Q14)(Q17)(Q15)(Q18)로 구성되는 차동증폭부(4)의 각 베이스 입력단을 연결하고, 차동증폭부(4)의 각 출력점(L)(M)(N)을 증폭트랜지스터(Q19)(Q20)(Q21)로 연결하여 그 출력을 저항(R68)(R69)(R70)을 통해서 모니터(CM)에 결합시킨 구조로 되어 있다.The present invention provides transistors Q1, Q2, Q3, and Q4 at the basic color difference signal output stages XRGE1, XRGB2, XRGB4, and XRGB8 of the system 1, which applies an appropriate level signal to the color monitor CM. ) And a color signal combination section 2 composed of the sync signal transistors Q5, Q6 and resistors R22-R37, and a transistor (3) at the output terminals A, B, and C of the color signal combination section 2; Q7) (Q10) (Q8) (Q11) (Q9) and (Q12) connect color signal amplifiers (3) connected in series, respectively, and output points (D) (E) (F) of the color signal amplifiers (3). Is connected to each base input terminal of the differential amplifier 4 composed of transistors Q13, Q16, Q14, Q17, Q15 and Q18, and each output point L of the differential amplifier 4 is connected. (M) (N) is connected to the amplification transistors Q19, Q20 and Q21, and its output is coupled to the monitor CM through resistors R68, R69 and R70.

미설명부호 SYNC 는 부극성 동기신호를 나타낸다.Reference numeral SYNC denotes a negative synchronization signal.

제1도는 상기한 구조로 되어 있는 본 고안의 계통도를 나타낸 것으로, 색신호 조합부(2)에서는 시스콤(1)에서 발생된 색차신호를 부극성 동기신호(SYNC)와 조합하여 중간색을 다수 포함하는 여러가지 신호를 발생시키고, 색신호 증폭부(3)에서는 임피던스 메칭(impedance matching)과 전류증폭을 하며, 차동증폭부(4)에서는 전류증폭된 신호를 컬러모니터(CM) 구동용의 전압으로 최종 증폭하여 이를 컬러모니터(CM)의 임력부로 연결해서 여러가지 색을 표현할 수 있게 되어 있다.FIG. 1 is a schematic diagram of the present invention having the above-described structure. In the color signal combination unit 2, the color difference signal generated in the system 1 is combined with a negative sync signal SYNC to include a plurality of intermediate colors. A signal is generated, and the color signal amplifying unit 3 performs impedance matching and current amplification, and the differential amplifying unit 4 amplifies the current amplified signal to the voltage for driving the color monitor CM and It is possible to express various colors by connecting to the power unit of the color monitor (CM).

제2도는 상기한 계통도를 구체화시킨 본 고안의 회로도로써 각 소자의 동작관계를 설명하면 다음과 같다.2 is a circuit diagram of the present invention incorporating the above-described schematic diagram.

시스콤(SYSTEM CONTROL COMPUTER)(1)의 기본 색차신호 출력단(XRGB1)(XRGB2)(XRGB8)(XRGB4)은 색신호 조합부(2)의 입력단저항(R10)(R11)(R12)(R13)을 거친 후 트랜지스터(Q1)(Q2)(Q3)(Q4)에 가해지며 이들의 파형은 첨부한 도면의 제3도와 같다.The basic color difference signal output stages XRGB1, XRGB2, XRGB8 and XRGB4 of the SYSTEM CONTROL COMPUTER 1 have passed through the input stage resistors R10, R11, R12 and R13 of the color signal combination section 2. The transistors are applied to the transistors Q1, Q2, Q3, and Q4, and their waveforms are the same as those in FIG. 3 of the accompanying drawings.

한편, 부극성 동기신호(SYNC)는 역변환 트랜지스터(Q5)(Q6)를 통과하게 되는데 트랜지스터(Q5)의 베이스저항(R14)에는 스위칭타임을 줄이기 위하여 콘덴서(C12)가 병렬로 연결되어 있다.On the other hand, the negative sync signal SYNC passes through the inverting transistors Q5 and Q6. The capacitor C12 is connected in parallel to the base resistor R14 of the transistor Q5 to reduce switching time.

여기서 시스콤(1)은 적, 녹, 청색의 3색에 대한 색신호로 적절히 조합하여 생성된 16가지의 색상을 4비트의 코드로 데이터처리한 다음 컬러모니터에 나타내고자 하는 색상에 대한 코드데이터를 시스콤(1)의 출력단(XRGB1)(XRGB2)(XRGB4)(XRGB8)을 통하여 색차신호로써 트랜지스터(Q1)(Q2)(Q3)(Q4)의 베이스에 각각 급공한다.Here, the ciscom 1 processes the 16 colors generated by appropriately combining the color signals for the three colors of red, green, and blue with a 4-bit code, and then codes the code data for the color to be displayed on the color monitor. Through the output terminals XRGB1, XRGB2, XRGB4, and XRGB8 of (1), supply is made to the bases of the transistors Q1, Q2, Q3, and Q4 as color difference signals, respectively.

트랜지스터(Q1)(Q2)(Q3)(Q4)의 베이스에 각각 공급되는 색차신호는 트랜지스터(Q6)를 거친 부극성 동기신호(SYNC)와 함께 각 저항(R22-R37)의 저항값에 의해서 조합되어 색산조합부(2)의 출력단(A)(B)(C)에는 16가지의 색상을 표현할 수 있는 여러가지 레벨의 RGB 색신호가 각각 나타나게 된다. 따라서 출력단(A)에서는 예를 들면 제4도의 (4-1)과 같은 파형이 나타나게 된다. 그러나 이러한 출력신호는 낮은 전류로서 구성되어 있기 때문에 색신호조합부(2)의 A점의 출력은 트랜지스터(Q7)(Q10)에 의해서, B점의 출력은 트랜지스터(Q8)(Q11)에 의해서, C점의 출력은 트랜지스터(Q9)(Q12)에 의해서 다시 증폭되어 저항(R47)(R48)(R49)을 통하여 차동증폭부(4)의 트랜지스터(Q13)(Q14)(Q15)의 베이스에 인가된다.The color difference signals supplied to the bases of the transistors Q1, Q2, Q3 and Q4 are combined by the resistance values of the resistors R22 to R37 together with the negative synchronization signal SYNC passed through the transistor Q6. In the output stages A, B, and C of the chromatic combination unit 2, RGB color signals of various levels capable of expressing 16 colors are respectively displayed. Therefore, at the output terminal A, for example, a waveform such as (4-1) in FIG. 4 appears. However, since such an output signal is configured as a low current, the output of the point A of the color signal combination section 2 is driven by the transistors Q7 and Q10, and the output of the point B is driven by the transistors Q8 and Q11. The output of the point is amplified again by transistors Q9 and Q12 and applied to the bases of transistors Q13, Q14 and Q15 of the differential amplifier 4 via resistors R47, R48 and R49. .

이러한 색신호증폭부(3)의 파형은 위에서 든 예에 따라 제4도의 (4-2)와 같으며 아직 VTR을 구동시키기에는 부족한 상태이다. 그리하여 이 신호들은 트랜지스터(Q13)(Q16)(Q14)(Q17)(Q15)(Q18)로 이루어진 차동증폭부(4)에서 증폭되어진다.The waveform of the color signal amplifier 3 is the same as (4-2) in FIG. 4 according to the example described above, and it is still insufficient to drive the VTR. Thus, these signals are amplified in the differential amplifier 4 consisting of transistors Q13, Q16, Q14, Q17, Q15 and Q18.

여기에서 트랜지스터(Q13)(Q14)(Q15)의 베이스로 들어온 신호는 트랜지스터(Q16)(Q17)(Q18)의 베이스에 인가된 전압과의 차이만큼 증폭되는데, 트랜지스터(Q13),(Q14),(Q15)의 베이스전압이 에미터전압보다 크므로(에미터에는 -Vcc3가 인가되므로) 각각의 트랜지스터(Q13)(Q14)(Q15)는 동작(turn-on)상태가 되고, 트랜지스터(Q16)(Q17)(Q18)의 베이스전위도 트랜지스터(Q19)(Q20)(Q21)의 베이스-컬렉터가 순방향바이어스이므로 저항(R65)(R66)(R67)의 전압강하에 의해서 +전위로 동작하게 된다.Here, the signal coming into the base of the transistors Q13, Q14 and Q15 is amplified by a difference from the voltage applied to the base of the transistors Q16, Q17 and Q18, and the transistors Q13, Q14, Since the base voltage of Q15 is larger than the emitter voltage (-Vcc3 is applied to the emitter), each of the transistors Q13, Q14 and Q15 is turned on and the transistor Q16 is turned on. Since the base-collectors of the transistors Q19, Q20, and Q21 are forward biases, the base potentials of the transistors Q19 and Q18 operate at + potential due to the voltage drop of the resistors R65, R66, and R67.

이러한 차동증폭부(4)의 출력은 트랜지스터(Q19)(Q20)(Q21)의 증폭작용에 의해 다시 증폭된 후 저항(R68)(R69)(R70)을 거쳐서 컬러모니터(CM)에 인가되어 적정한 색신호가 컬러모니터(CM)에 표시되는 것이다. 컬러모니터(CM)상의 색신호 표시유무는 시스콤(1)에서 이루어지는 본래의 표현색상에 대한 코드신호 출력유무에 따르게 된다.The output of the differential amplifier 4 is amplified again by the amplification action of the transistors Q19, Q20, and Q21, and then applied to the color monitor CM through the resistors R68, R69, and R70 to be appropriate. The color signal is displayed on the color monitor CM. The presence or absence of the color signal display on the color monitor CM depends on the presence or absence of the code signal output for the original representation color made by the system 1.

상기한 바와 같이 본 고안은 시스콤(1)과 컬러모니터(CM)사이에 색신호조합부(2)와 색신호증폭부(3), 그리고 차동증폭부(4)를 연결하므로써 시신콤(1)에서의 색차신호를 조합 증폭하여 16가지에 이르는 색상을 효과적으로 표현할 수 있는 장점을 가지고 있다.As described above, the present invention connects the color signal combination unit 2, the color signal amplifier 3, and the differential amplifier 4 between the sheath comb 1 and the color monitor CM. By combining and amplifying the color difference signal, it has the advantage of expressing up to 16 colors effectively.

또한 본 고안에서 저항(R22-R37)의 값을 적절히 조절하면 더욱 다양한 색상을 표현할 수 있게 된다.In addition, in the present invention, if the values of the resistors R22 to R37 are properly adjusted, more various colors can be expressed.

Claims (1)

컬러모니터(CM)측으로 코드화된 색차신호를 인가하는 시스콤(1)의 기본 색차신호 출력단(XRGB1)(XRGB2)(XRGB4)(XRGB8)에 트랜지스터(Q1)(Q2)(Q3)(Q4)와 동기신호용 트랜지스터(R5)(R6) 및 저항(R22-R37)으로 구성되는 색신호조합부(2)를 연결하고, 색신호조합부(2)의 출력단(A)(B)(C)에는 트랜지스터(Q7)(Q10)(Q8)(Q11)(Q9)(Q12)가 각각 직렬로 접속된 신호증폭부(3)를 연결하며, 색신호 증폭부(3)의 출력점(D)(E)(F)에는 트랜지스터(Q13)(Q16)(Q14)(Q17)(Q15)(Q18)로 구성되는 차동증폭부(4)의 각 베이스 입력단을 연결하고, 차동증폭부(4)의 각 출력점(L)(M)(N)을 증폭트랜지스터(Q19)(Q20)(Q21)에 연결하여 그 출력을 저항(R68)(R69)(R70)을 통해서 컬러모니터(CM)에 결합시킨 구조로 되어 있는 색차신호 발생회로.Synchronization with transistors Q1, Q2, Q3 and Q4 at the basic color difference signal output stages XRGB1, XRGB2, XRGB4 and XRGB8 of the system 1, which applies the coded color difference signal to the color monitor CM side. The color signal combination section 2 constituted by the signal transistors R5 and R6 and the resistors R22 and R37 is connected, and the transistor Q7 is connected to the output terminals A, B, and C of the color signal combination section 2. (Q10) (Q8) (Q11) (Q9) and (Q12) respectively connect the signal amplifiers (3) connected in series, and at the output points (D) (E) (F) of the color signal amplifier (3). Connect each base input terminal of the differential amplifier 4 composed of transistors Q13, Q16, Q14, Q17, Q15 and Q18, and output each output point L of the differential amplifier 4 ( M (N) is connected to amplifying transistors (Q19), (Q20) and (Q21), and its output is coupled to the color monitor (CM) through resistors R68, R69, and R70. Circuit.
KR2019830006994U 1983-08-09 1983-08-09 Chrominance processing circuit KR850002436Y1 (en)

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KR2019830006994U KR850002436Y1 (en) 1983-08-09 1983-08-09 Chrominance processing circuit

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KR850002253U KR850002253U (en) 1985-04-22
KR850002436Y1 true KR850002436Y1 (en) 1985-10-18

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