KR910004737Y1 - Vertical line distortion compensation device - Google Patents

Vertical line distortion compensation device Download PDF

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Publication number
KR910004737Y1
KR910004737Y1 KR2019860019003U KR860019003U KR910004737Y1 KR 910004737 Y1 KR910004737 Y1 KR 910004737Y1 KR 2019860019003 U KR2019860019003 U KR 2019860019003U KR 860019003 U KR860019003 U KR 860019003U KR 910004737 Y1 KR910004737 Y1 KR 910004737Y1
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South Korea
Prior art keywords
capacitor
vertical line
deflection
current
horizontal output
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KR2019860019003U
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Korean (ko)
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KR880010959U (en
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최선주
이학찬
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대우전자 주식회사
김용원
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

내용 없음.No content.

Description

텔레비젼 수상기의 종선 왜(歪) 보정장치Vertical line distortion correction device of TV receiver

제 1 도는 본 고안의 회로도.1 is a circuit diagram of the present invention.

제 2 도는 본 고안에 따른 파형도.2 is a waveform diagram according to the present invention.

제 3 도는 종선 왜 발생 원리도.3 is the principle of why vertical line generation.

제 4 도는 종래의 회로도.4 is a conventional circuit diagram.

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

Tr : 수평출력트랜지스터 L1, L2, L3: 편향코일Tr: Horizontal output transistor L 1 , L 2 , L 3 : Deflection coil

FBT : 플라이백 트랜스 R1, R2: 저항FBT: flyback transformer R 1 , R 2 : resistance

D1-D3: 다이오드 C1-C3: 콘데서D 1 -D 3 : Diode C 1 -C 3 : Condenser

본 고안은 텔레비젼 수상기의 종선 왜(歪) 보정장치의 회로구성에 관한 것이다.The present invention relates to a circuit configuration of a vertical distortion correction device of a television receiver.

종래에는 제 4 도에 나타낸 바와같이 구성되어져의 종선의 현상이 발생되는데 이의 동작을 간략히 설명하면 수평드라이브 펄스가 수평출력 트랜지스터(Tr)의 베이스에 입력되면 온(ON)되어 전원(B)이 그의 콜렉터에서 에미터로 흐르게 된다.Conventionally, a vertical line phenomenon occurs as shown in FIG. It will flow from the collector to the emitter.

이에 편향코일(L1-L3)의 공진기간 중에는 콘덴서(C1) (C3)로 전류가 흐르게 된다.Accordingly, current flows through the capacitor C 1 (C 3 ) during the resonance period of the deflection coils L 1 -L 3 .

즉 CRT의 애노오드에 전류가 흐르게 됨으로서 스크린상에 밝은 부분이 계속되고 이에 고압정류 다이오드(D2)와 콘덴서(C3)에 흐르는 전류는 증가하므로 고압이 감소되어 제 3 도와 같이 전자빔의 직진성이 약해지고 콘덴서(C1)에 충전전류가 감소되게 되어 편향코일(L1-L3)의 에너지(Energy)량은 거의 일정하게 된다.That is, as the current flows through the anode of the CRT, the bright portion continues on the screen, and the current flowing through the high voltage rectifying diode (D 2 ) and the capacitor (C 3 ) increases, so that the high pressure is reduced, so that the straightness of the electron beam is reduced. Since the charge current decreases in the capacitor C 1 , the amount of energy in the deflection coils L 1 to L 3 is substantially constant.

따라서 편향코일(L1-L3)의 편향력이 일정하게 됨에 따라 전자빔의 직직성이 약해짐으로서 Q만큼 전자빔이 휘어져 주사되는 궤적에 왜(歪)현상이 나타나게 된다.Therefore, as the deflection force of the deflection coils L 1 to L 3 becomes constant, the straightness of the electron beam is weakened, which causes distortion of the electron beam by Q and causes a phenomenon in the trajectory.

즉 CRT에서 넓은 부위의 밝은 부분이 계속되면 애노오드 전류는 증가하게 되고 고압은 낮아지므로서 수평진폭이 넓어져 종선이 휘어지는 현상이 나타나게 되는 것이다.In other words, if the bright part of the wide area continues in the CRT, the anode current increases and the high pressure decreases, causing the horizontal amplitude to widen, causing the vertical line to bend.

이에 본 고안은 종래의 제반 문제점을 해소코져 애노오드에 흐르는 고압이 저하되면 그에 흐르는 전류량을 제어하여 편향력 또한 약하게 하여 전자빔을 일정하게 주사할 수 있도록 한 것으로서 본 고안의 주된 목적은 저항과 다이오드 및 콘덴서에 의해 편향코일에 전류(편향력)을 보정하여 CRT에 주사되는 빔의 궤적을 일정하게 주사하여 그의 직진력을 향상시킬 수 있는 보정 회로를 제공 하려는 것이다.Therefore, the present invention solves all the conventional problems, and when the high pressure flowing to the anode is lowered, the amount of current flowing thereto is controlled so that the deflection force is weakened so that the electron beam can be constantly scanned. It is to provide a correction circuit that can correct the current (deflection force) to the deflection coil by the capacitor to constantly scan the trajectory of the beam scanned to the CRT to improve its linear force.

상기의 목적을 달성시킬 수 있는 구성을 첨부된 도면에 의거 설명하면 다음과 같다.Referring to the accompanying drawings, a configuration capable of achieving the above object is as follows.

수평출력 트랜지스터(Tr)와 댐퍼 다이오드(D1), 콘덴서(C1, C2, C4), 수평편향 코일(L1-L3) 및 플라이백 트랜스(FBT)로 구성된 수평출력회로에 CRT의 애노오드에 전압을 제어하기 위해 저항(R4)과 다이오드(D2)를 병렬로 연결하여 편향코일(L1)과 콘덴서(C2)사이에 연결하여 보정회로를 구성한다.CRT in a horizontal output circuit consisting of a horizontal output transistor (Tr) and a damper diode (D 1 ), a capacitor (C 1 , C 2 , C 4 ), a horizontal deflection coil (L 1- L 3 ), and a flyback transformer (FBT) In order to control the voltage at the anode of the resistor (R 4 ) and diode (D 2 ) in parallel connected between the deflection coil (L 1 ) and the capacitor (C 2 ) to compose a correction circuit.

미설명 부호 B는 전원이고 C3는 콘덴서이다.Reference numeral B is the power supply and C 3 is the capacitor.

이와같이 구성된 본 고안의 작용 효과를 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above are as follows.

여기에서 먼저 수평출력트랜지스터(Tr)의 베이스에 제 2b 도에서와 같이 t3의 시간동안 수평 드라이브 펄스가 입력되면 트랜지스터(Tr)는 "오프"되어 콘덴서(C1)에 충전된 전류가 방전 됨으로서 편향코일(L1-L3)과 저항(R2)을 거쳐 콘덴서(C3)에 충전을 하게된다.Here, when the horizontal drive pulse is input to the base of the horizontal output transistor Tr for a time t 3 as shown in FIG. 2b, the transistor Tr is "off" and the current charged in the capacitor C 1 is discharged. The capacitor C 3 is charged through the deflection coils L 1 to L 3 and the resistor R 2 .

즉, 축적시간(t3)동안에는 편향코일(L1-L3)에 흐르는 전류가 감소됨으로서 고압정류 다이오드(D2)와 콘덴서(C3)에 흐르는 전류 또한 감소되어 CRT의 애노오드에 흐르는 전압은 증가하게 되고 이에 CRT의 스크린상에는 어두운 부분(t4의 시간)이 계속되는 것이다.That is, during the accumulation time t 3 , the current flowing in the deflection coils L 1- L 3 is reduced, so that the current flowing in the high-voltage rectifier diode D 2 and the capacitor C 3 is also reduced, and thus the voltage flowing in the anode of the CRT. Is increased so that dark areas (time of t 4 ) continue on the screen of the CRT.

이때 수평 출력트랜지스터(Tr)의 베이스에 t1의 시간동안 수평드라이브 펄스가 입력되면 턴온 하게된다.At this time, when the horizontal drive pulse is input to the base of the horizontal output transistor Tr for a time t 1 , it is turned on.

이에 전원(B)은 트랜지스터(Tr)의 콜렉터에서 에미터에는 직선적으로 증가하는 전류가 흐르게 되며 고압정류다이오드(D2)를 거쳐 콘덴서(C3)에 흐르는 저류(t2시간)또한 증가한다.Accordingly, the power source B flows a linearly increasing current from the collector of the transistor Tr to the emitter, and also increases the flow (t 2 hours) flowing through the high-voltage rectifier diode D 2 to the capacitor C 3 .

한편 수평 출력트랜지스터(Tr)의 콜렉터에서 에미터로 흐르는 전류가 증가함에 따라 콘덴서(C1)에 충전되는 전류는 작아지며 편향코일(L1-L3)을 통하여 흐르는 전류도 작아지게 되어 콘덴서(C2)에 충전되는 전압도 작아진다.Meanwhile, as the current flowing from the collector of the horizontal output transistor Tr to the emitter increases, the current charged in the capacitor C 1 decreases and the current flowing through the deflection coils L 1 -L 3 also decreases. The voltage charged in C 2 ) is also reduced.

이때 콘덴서(C3)에 충전된 전압이 다이오드(D2)를 통해 콘덴서(C2)에 충전하게 됨에 따라 그의 충전되는 전압이 높아지게 되어 높아진 만큼 편향코일(L1-L3)에 흐르는 전류는 더 감소되는 것이다.At this time, as the voltage charged in the capacitor C 3 is charged to the capacitor C 2 through the diode D 2 , the current flowing in the deflection coil L 1- L 3 increases as the voltage thereof is increased. It is further reduced.

따라서 편향코일(L1-L3)의 축적된 편향에너지(Energy)가 감소하게 되기 때문에 전자 빔(beam)은 정확한 궤적을 주사하게 되는 것이다.Therefore, since the accumulated deflection energy (Energy) of the deflection coils (L 1 -L 3 ) is reduced, the electron beam scans the correct trajectory.

즉, 콘덴서(C2)의 충전 전압이 높아짐으로서 편향코일(L1-L3)에 흐르는 전류는 더 감소하게 되어 축적된 에너지 또한 감소하기 때문에 편향력이 저하되는 것이다.That is, as the charging voltage of the capacitor C 2 increases, the current flowing through the deflection coils L 1- L 3 further decreases, and the accumulated energy also decreases, so that the deflection force decreases.

여기에서 콘덴서(C3)의 충전용량은 콘덴서(C2)의 충전하보다 항상 커야 된다.Here, the charging capacity of the condenser C 3 should always be larger than that of the condenser C 2 .

또한 수평드라이브펄스(t1시간동안)가 수평출력트랜지스터(Tr)의 베이스에 입력되면 턴온되어 상기에서와 같이 반복적으로 동작을 하게 된다.In addition, when the horizontal drive pulse (t 1 hour) is input to the base of the horizontal output transistor (Tr) is turned on to operate repeatedly as described above.

이상에서와 같이 본 고안은 밝은 부분이 계속되어 CRT의 애노오드 전류가 증가함으로서 고압이 낮아지고 이에 따른 편향력이 약하여 빔의 직진성이 저하되는 현상을 개선하여 CRT의 애노우드에 고압이 저하되면 편향력 또한 약하게 함으로서 빔의 일정하게 주사 함으로서 종래에 발생된 종선 왜 현상을 보정하여 CRT의 기능을 한층 더 높여주는 효과가 있다.As described above, the present invention improves the phenomenon that the high pressure is lowered by increasing the anode current of the CRT and the deflection force is weak due to the bright part, and the straightness of the beam is reduced. By weakening the force, the beam is constantly scanned, thereby improving the function of the CRT by correcting the vertical vertical distortion phenomenon.

Claims (1)

통상의 수평출력 트랜지스터(Tr)의 댐퍼다이오드(D1), 콘덴서(C1, C2, C4), 편향코일(L1-L3) 및 플라이백 트랜스(FBT)로 구성된 수평출력 회로에 있어서 편향요크 코일에 입력되는 전류를 즉 편향력을 보정하기 위해 편향코일(L3)과 콘덴서(C2)사이에 저항(R2)과 다이오드(D2)를 병렬 연결하고 그 사이에 콘덴서(C3)를 접속하여 보정회로를 구성하는 것을 특징으로 하는 텔레비젼 수상기의 종선 왜 보정장치.In a horizontal output circuit composed of a damper diode (D 1 ), a capacitor (C 1 , C 2 , C 4 ), a deflection coil (L 1- L 3 ) and a flyback transformer (FBT) of a conventional horizontal output transistor (Tr). in the parallel connection of the resistance (R 2) and a diode (D 2) between the deflection coil (L 3) and capacitor (C 2) to compensate for the current that is the biasing force to be input to the deflection yoke coil and a capacitor therebetween ( C 3) a vertical line why correction device of the television receiver, characterized in that configuring the compensation circuit to connect.
KR2019860019003U 1986-11-29 1986-11-29 Vertical line distortion compensation device KR910004737Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019860019003U KR910004737Y1 (en) 1986-11-29 1986-11-29 Vertical line distortion compensation device

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Application Number Priority Date Filing Date Title
KR2019860019003U KR910004737Y1 (en) 1986-11-29 1986-11-29 Vertical line distortion compensation device

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KR880010959U KR880010959U (en) 1988-07-29
KR910004737Y1 true KR910004737Y1 (en) 1991-07-01

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KR2019860019003U KR910004737Y1 (en) 1986-11-29 1986-11-29 Vertical line distortion compensation device

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