KR19990009834U - Regulation Correction Circuit - Google Patents

Regulation Correction Circuit Download PDF

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Publication number
KR19990009834U
KR19990009834U KR2019970023311U KR19970023311U KR19990009834U KR 19990009834 U KR19990009834 U KR 19990009834U KR 2019970023311 U KR2019970023311 U KR 2019970023311U KR 19970023311 U KR19970023311 U KR 19970023311U KR 19990009834 U KR19990009834 U KR 19990009834U
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South Korea
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abl
fbt
port
voltage
beam current
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KR2019970023311U
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Korean (ko)
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KR200188159Y1 (en
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고대곤
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윤종용
삼성전자 주식회사
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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
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/185—Maintaining dc voltage constant
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/005—Power supply circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Details Of Television Scanning (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

본 고안은 브라운관 사용 영상재생장치에서 빔(Beam) 변화량에 따른 고압보정이 자동조정되도록 하는 레귤레이션 보정회로에 관한 것이다.The present invention relates to a regulation correction circuit for automatically adjusting the high pressure correction according to the beam change amount in a CRT-based image reproducing apparatus.

이러한 본 고안은 빔전류 변화량에 따라 고압보정이 자동조정되게 하므로써 콘덴서 블록내장이 안된 FBT를 사용하여 대형세트에도 화면 울렁거림 없이 PIP를 구현할 수 있도록 한 것으로, 빔전류 변화에 따른 전원이 FBT의 ABL 포트에 인가됨과 동시에 고압보정단자에 직접인가되게 하므로써 빔전류 변화에 따라 고압보정이 이루어지도록 하여 레귤레이션을 안정화시키도록 한 것이다.The present design enables automatic adjustment of high-voltage correction according to the beam current change amount, so that a PIP can be realized without screen rumble even in a large set by using an FBT without a built-in capacitor block. As it is applied to the port and applied directly to the high voltage compensation terminal, high voltage compensation is performed according to the beam current change to stabilize the regulation.

Description

레귤레이션 보정회로Regulation Correction Circuit

본 고안은 브라운관 사용 영상재생장치에서 빔(Beam) 변화량에 따른 고압보정이 자동조정되도록 하는 레귤레이션 보정회로에 관한 것이다.The present invention relates to a regulation correction circuit for automatically adjusting the high pressure correction according to the beam change amount in a CRT-based image reproducing apparatus.

기존의 레귤레이션 보정회로는 도 1 에 도시된 바와 같이 ABL용 전원(B+)이 저항(R5-R7)을 거쳐 FBT의 ABL 포트에 인가되는 한편 다이오드(D1)와 저항(R2-R4)을 거쳐 트랜지스터(Q1)의 구동을 제어하게 연결되고 ABL 전류는 트랜지스터(Q1)의 에미터에 인가됨과 동시에 저항(R8-R10)을 거쳐 고압보정단자(EHT)에 인가되게 구성된다.In the conventional regulation correction circuit, as shown in FIG. 1, the ABL power supply B + is applied to the ABL port of the FBT via the resistors R 5 -R 7 while the diode D 1 and the resistor R 2 − R 4 ) is connected to control the driving of transistor Q 1 and the ABL current is applied to the emitter of transistor Q 1 and at the same time to the high voltage compensation terminal EHT via resistors R 8 -R 10 . It is configured to be.

이경우 FBT의 ABL 포트에 인가되는 B점 전압이 브라운관의 빔전류 가변에 따라 가변되게 되고 상기 B점 전압의 가변에 의해 ABL 전류가 인가되는 A점이 전압이 가변되어야만 고압보정단자(EHT)의 인가전압이 가변되어 고압보정이 이루어지게 된다.In this case, the point B voltage applied to the ABL port of the FBT is changed according to the beam current variation of the CRT and the point A voltage to which the ABL current is applied by the change of the B point voltage is changed only when the voltage of the high voltage correction terminal (EHT) is applied. This variable is high pressure correction is made.

따라서 화면이 밝지 않은 경우에는 고압보정이 이루어지게 되나 화면이 밝은 경우는 고압보정이 제대로 되지 않아 화면이 휘어져 보이는 문제점이 있었다.Therefore, if the screen is not bright, the high pressure correction is made, but if the screen is bright, the high pressure correction is not properly, there was a problem that the screen is bent.

즉 화면이 어두운 경우 FBT의 ABL 포트에 인가되는 B점 전압이 높아지게 되고 이에따라 트랜지스터(Q1)가 오프되어 A점에서 고압보정단자(EHT)에 인가되는 ABL 전류가 높아져 정상적인 고압보정이 이루어진다.That is, when the screen is dark, the point B voltage applied to the ABL port of the FBT becomes high, and accordingly, the transistor Q 1 is turned off, thereby increasing the ABL current applied to the high voltage correction terminal EHT at the point A, thereby performing normal high voltage correction.

한편 화면이 밝은 경우는 FBT의 ABL 포트에 인가되는 B점 전압은 낮아지고 트랜지스터(Q1)가 온되어 고압보정단자(EHT)에 인가되는 A점 전압이 가변되어 고압보정이 이루어진다.On the other hand, when the screen is bright, the point B voltage applied to the ABL port of the FBT is lowered, and the transistor Q 1 is turned on, and the point A voltage applied to the high voltage correction terminal EHT is changed to perform high voltage correction.

그러나 B점 즉 브라운관의 빔가변에 따른 직접적이 고압보정은 이루어지지 않게 된다.However, the high-pressure correction is not made directly due to the point B, that is, the beam variation of the CRT.

이같이 ABL 전류를 직접 고압보정단자(EHT)에 인가시킴으로써 브라운관의 빔전류 가변에 따른 고압보정이 제대로 되지 않으므로 PIP 또는 TTX 추가시 레귤레이션 불량으로 도입이 어려우며 PIP 또는 TTX를 추가시키기 위해서는 콘덴서 블록이 내장된 고가의 FBT를 사용하여야 한다.As the ABL current is directly applied to the high-voltage correction terminal (EHT), the high-voltage correction is not properly performed due to the variable beam current of the CRT. Therefore, it is difficult to introduce it as a poor regulation when adding the PIP or TTX. Expensive FBT should be used.

본 고안은 빔전류 변화량에 따라 고압보정이 자동조정되게 하므로써 콘덴서 블록이 없는 FBT를 사용하여 도형세트에 PIP를 추가시킬 수 있도록 한 것으로,The present invention allows the high pressure compensation to be automatically adjusted according to the beam current variation, so that the PIP can be added to the figure set using the FBT without the condenser block.

빔전류 변화에 따른 전원이 FBT의 ABL 포트에 인가됨과 동시에 고압보정단자에 직접인가되게 하므로써 빔전류 변화에 따라 항상 고압보정이 이루어지도록 하여 레귤레이션을 안정화시키도록 한 것이다.The power is applied to the ABL port of the FBT and directly applied to the high voltage compensation terminal at the same time so that the high voltage compensation is always performed according to the beam current change to stabilize the regulation.

이러한 본 고안은 ABL 전원이 ABL 전류가 인가되는 트랜지스터의 베이스와 연계됨과 동시에 FBT의 ABL 포트에 인가되게 하는 한편 고압보정단자에도 직접 인가되게 하므로써 이루어지며 ABL 전원을 저항으로 적절히 분배시켜 빔변화량을 조절하게 된다.The present invention is made by applying ABL power to the base of the transistor to which the ABL current is applied and to the ABL port of the FBT and directly to the high voltage compensation terminal. Done.

도 1 은 기존의 회로도1 is a conventional circuit diagram

도 2 는 본 고안의 회로도2 is a circuit diagram of the present invention

도면의주요부분에대한부호의설명Explanation of symbols on the main parts of the drawing

Q1: 트랜지스터 C1, C2: 콘덴서Q 1 : transistor C 1 , C 2 : condenser

R1- R11: 저항 D1, D2: 다이오드R 1 -R 11 : Resistor D 1 , D 2 : Diode

본 고안은 도 2 에 도시된 바와 같이 ABL 전원(B+)이 저항(R5-R7)과 콘덴서(C2)를 거쳐 FBT의 ABL 포트에 인가되는 한편 저항(R4)과 다이오드(D1)를 통하여 트랜지스터(Q1)의 베이스에 인가되게 구성한 회로에 있어서,As shown in FIG. 2, the ABL power source B + is applied to the ABL port of the FBT via the resistors R 5 -R 7 and the capacitor C 2 , while the resistor R 4 and the diode D In a circuit configured to be applied to the base of the transistor Q 1 through 1 ),

FBT의 ABL 포트에 인가되는 전원은 접지와 연결된 저항(R11)에 의해 분배되어 인가되게 하고 상기 저항(R11)에 의해 분배된 전원이 저항(R8-R10)과 콘덴서(C3)를 거쳐 고압보정단자(EHT)에 인가되게 구성한 것이다.The power applied to the ABL port of the FBT is distributed and applied by a resistor (R 11 ) connected to ground, and the power distributed by the resistor (R 11 ) is a resistor (R 8 -R 10 ) and a capacitor (C 3 ). It is configured to be applied to the high pressure correction terminal (EHT) through.

이러한 본 고안은 화면밝기 변화에 따라 H점 전위가 변화되게 되고 이에따라 FBT의 ABL 포트와 고압보정단자(EHT)에 인가되는 전위가 화면밝기(즉 빔전류)에 의해 변화되게 되므로 빔전류 변화량에 따른 고압보정이 자동조정되어진다.According to the present invention, the H point potential is changed according to the change of the screen brightness, and accordingly, the potential applied to the ABL port and the high-voltage correction terminal (EHT) of the FBT is changed by the screen brightness (that is, the beam current). High pressure compensation is automatically adjusted.

즉 본 고안은 화면이 어두운 경우 H점에 인가되는 전압이 높아지게 되면 이때의 H점 전압은 저항(R5-R6)(R11)로 분배되어 FBT의 ABL 포트에 인가되는 한편 저항(R8-R10)으로 분배되어 고압보정단자(EHT)에 인가되므로 FBT의 ABL 포트에 인가되는 전압에 따라 고압보정단자(EHT)에 인가되는 전압이 가변되어 정상적인 고압보정이 이루어지게 되고 반대로 화면이 밝아 H점에 인가되는 전압이 낮아지게 되면 이때의 H점 전압도 FBT의 ABL 포트와 고압보정단자(EHT)에 인가되므로 FBT의 ABL 포트에 인가되는 전압에 따라 고압보정단자(EHT)에 인가되는 전압이 가변되어 정상적인 고압보정이 이루어지게 된다.In other words, when the voltage applied to the H point becomes high when the screen is dark, the H point voltage at this time is divided into the resistors R 5- R 6 and R 11 and applied to the ABL port of the FBT, while the resistance R 8 -R 10 ) is distributed to the high pressure correction terminal (EHT), so the voltage applied to the high pressure correction terminal (EHT) is varied according to the voltage applied to the ABL port of the FBT so that the normal high pressure correction is made and the screen is bright. When the voltage applied to the H point becomes low, the H point voltage at this time is also applied to the ABL port and the high voltage correction terminal (EHT) of the FBT, and thus the voltage applied to the high voltage correction terminal (EHT) according to the voltage applied to the ABL port of the FBT. This variable is a normal high pressure correction is made.

이러한 본 고안은 H점에서 FBT의 ABL 포트에 가해지는 빔전류에 따라 고압보정단자(EHT)에 가해지는 AC/DC 성분이 항시 변화하게 되므로 빔전류의 변화에 따라 항상 정상적인 레귤레이션 보정이 이루어지게 된다.This design of the present invention always changes the AC / DC component applied to the high-voltage correction terminal (EHT) according to the beam current applied to the ABL port of the FBT at H point, so that normal regulation correction is always performed according to the change of the beam current. .

따라서 빔전류에 따른 완벽한 고압보정을 이룰 수 있으며 콘덴서 블록이 구비되지 않은 소형 FBT를 사용하고서도 빔전류에 따른 고압보정을 할 수 있다.Therefore, it is possible to achieve perfect high pressure compensation according to the beam current, and high pressure compensation according to the beam current can be achieved even using a small FBT that is not equipped with a condenser block.

본 고안은 FBT의 ABL 포트에 인가되는 빔전류에 따라 고압보정단자에 인가되는 AC/DC 성분을 변화시켜 빔전류에 따른 완벽한 고압보정을 이룰 수 있어 콘덴서 블록이 구비되지 않은 소형 FBT를 사용하면서도 TTX 또는 PIP 기능을 수행시킬 수 있다.The present invention can achieve perfect high-pressure compensation according to the beam current by changing the AC / DC component applied to the high-voltage compensation terminal according to the beam current applied to the ABL port of the FBT. Alternatively, the PIP function can be performed.

또한 콘덴서 블록이 없는 FBT 사용으로 설치공간 확대와 싼가격으로 생산성을 확대시키는 효과가 제공된다.In addition, the use of FBT without a condenser block provides the effect of increasing installation space and productivity at a low price.

Claims (2)

빔전류의 변화에 따른 전압이 ABL 전류가 인가되는 트랜지스터에 구동전원으로 인가되는 한편 저항으로 분배되어 FBT의 ABL 포트에 인가되게 구성된 회로에 있어서,In a circuit configured to apply a voltage according to a change of a beam current as a driving power source to a transistor to which an ABL current is applied, while being distributed to a resistor and applied to an ABL port of an FBT, 빔전류의 변화에 따른 전압이 FBT의 ABL 포트에 인가되는 한편 저항으로 분배된 후 고압보정단자(EHT)에 인가되어 레귤레이션을 행하게 구성된 레귤레이션 보정회로.A regulation correction circuit configured to apply a voltage according to a change in beam current to an ABL port of an FBT while being distributed by a resistor and then to a high voltage correction terminal (EHT) to perform regulation. 제 1 항에 있어서, 빔전류의 변화에 따른 전압은 접지와 연결된 저항에서 분압되어 FBT의 ABL 포트에 인가되며 구성한 레귤레이션 보정회로.The regulation correction circuit of claim 1, wherein the voltage according to the change of the beam current is divided by a resistor connected to the ground and applied to the ABL port of the FBT.
KR2019970023311U 1997-08-20 1997-08-20 Regulation correct circuit KR200188159Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019970023311U KR200188159Y1 (en) 1997-08-20 1997-08-20 Regulation correct circuit

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KR19990009834U true KR19990009834U (en) 1999-03-15
KR200188159Y1 KR200188159Y1 (en) 2000-07-15

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