KR900000254Y1 - Adjustment circuit for the focus of monitor - Google Patents
Adjustment circuit for the focus of monitor Download PDFInfo
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- KR900000254Y1 KR900000254Y1 KR2019850012495U KR850012495U KR900000254Y1 KR 900000254 Y1 KR900000254 Y1 KR 900000254Y1 KR 2019850012495 U KR2019850012495 U KR 2019850012495U KR 850012495 U KR850012495 U KR 850012495U KR 900000254 Y1 KR900000254 Y1 KR 900000254Y1
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- capacitor
- circuit
- focus
- variable resistor
- monitor
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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
- H04N3/26—Modifications of scanning arrangements to improve focusing
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안을 개략 회로도.1 is a schematic circuit diagram of the present invention.
제2도는 본 고안을 설명하기 위한 그래프도이다.2 is a graph for explaining the present invention.
*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
VIDEO INPUT : 영상신호입력부 VIDEO AMP : 영상신호증폭부VIDEO INPUT: Video Signal Input VIDEO AMP: Video Signal Amplifier
CRT : 음극선관 AC INPUT : 교류 입력부CRT: cathode ray tube AC INPUT: AC input
POWER SUPPLY : 전원공급부 VERTICAL INPUT : 수직편향 입력부POWER SUPPLY: Power Supply VERTICAL INPUT: Vertical Deflection Input
HORlZONTAL lNPUT : 수평 편향 입력부HORlZONTAL lNPUT: Horizontal Deflection Input
VERTICAL PROCESSOR : 수직편향회로VERTICAL PROCESSOR: Vertical Deflection Circuit
HORIZONTAL PROCESSOR : 수평편향회로HORIZONTAL PROCESSOR: Horizontal Deflection Circuit
R301,302,305 : 가변저항 R301,302-306 : 저항R301,302,305: Variable resistor R301,302-306: Resistance
C318,319,320,321,305 : 콘덴서 Q303,304 : 트랜지스터C318,319,320,321,305: Capacitor Q303,304: Transistor
A, B, C, D : 기점A, B, C, D: starting point
본 고안은 모니터 촛점 조정회로에 관한 것으로 특히 컴퓨터에 입출력되는 데이터를 문자와 기호 및 그래픽으로 표시(DISPLAY)시킬 때 보다 더 선명하게 표시(DISPLAY)하기 위한 다이나믹 촛점회로에 관한 것이다.The present invention relates to a monitor focus control circuit, and more particularly, to a dynamic focus circuit for displaying a data more clearly than when displaying data input and output to a computer in characters, symbols, and graphics.
종래의 촛점회로는 한 개의 촛점조절기를 이용하여 수평편향을 위주로 한 전체적인촛점 조정을 함으로써 전체의 촛점을 조정하는데 어려움이 있었고 모니터에 나타나는 문자와 기호등이 선명하지 못한 단점이 있었다.The conventional focusing circuit has a difficulty in adjusting the overall focus by adjusting the entire focusing focusing on the horizontal deflection using a single focusing controller, and has the disadvantage that the letters and symbols appearing on the monitor are not clear.
본 고안은 상기의 단점들을 해소하기 위하여 수직 편향측과 수평 편향측에 각각 촛점회로를 설치함으로서 모니터에서 수직과 수평의 편향회로가 각각 분리되어 주사되기 때문에 보다 더 선명하게 표시될 수 있는 회로를 제공키 위한 것으로써 본 고안을 첨부된 도면에 따라 상술하면 다음과 같다.The present invention provides a circuit that can be displayed more clearly because the vertical and horizontal deflection circuits are separately scanned in the monitor by providing a focusing circuit on the vertical deflection side and the horizontal deflection side to solve the above disadvantages. When the key to the present invention according to the accompanying drawings in detail as follows.
전원입력(AC INPUT)으로 들어온 전원은 전원공급부(POWER SUPPLY)에서 직류로 정류하여 아래 설명하는 각 부분에 공급하도록 되고, 영상신호 입력부(VIDEO INPUT)에 들어온 영상신호는 영상신호 증폭부(VIDEO AMP)에서 증폭되어 음극선관(CRT)에 보내져 영상으로 나타나며, 이와같은 영상에서의 촛점을 조정하기위 하여 수직 편향회로(VERTICAL PROCESSOR)와 수평 편향회로(HORIZONTAL PROCESSOR)를 통해 조정하도록 함은 공지와 같은 것이다.The power supplied to the AC INPUT is rectified by DC from the power supply and supplied to each of the parts described below, and the video signal input to the video input unit is the video signal amplifier. Amplified and sent to the cathode ray tube (CRT) to appear as an image, and to adjust the focus in such an image through the vertical deflection circuit (VERTICAL PROCESSOR) and the horizontal deflection circuit (HORIZONTAL PROCESSOR). will be.
본고안에 있어서는 수직편향회로(이하VP라 한다)의 출력이 콘덴서(C05)와 수직편향촛점 조정용 가변저항(VR305) 및 저항(VR305)이 직열로 되어 캐소드 접지된PNP형 트랜지스터(Q304)의 베이스에 연결되고 에미터 저항(R305)과 콘덴서(C321)가 병열로 접지 연결된 NPN형 트랜지스터(Q303)의 베이스에 연결되어 있으며,수평편향회로(이하 HP라 한다)의 출력과 접지사이에 콘덴서(C318)가 연결되고 또 이와같은 출력은 콘덴서(C319)를 통해 트랜스(T304)의 일차측 프라이마리에 연결되고 그 단부는 가변저항(VR301)을 통해 접지되고, 2차측은 콘덴서(C321)와 저항(R302)을 통해 음극선관(CRT)의 요크코일에 연결되었으며 또 콘덴서(C321)와 저항(R302)사이의 분지점은 접지와 NPN형 트랜지스터(Q303)의 사이에 연결된 가변저항(VR302)의 가등접점에 연결하여서 된 것이다.In this paper, the output of the vertical deflection circuit (hereinafter referred to as VP) is connected to the capacitor C05, the vertical deflection focusing variable resistor VR305 and the resistor VR305 in series, and connected to the base of the cathode-grounded PNP transistor Q304. Connected to the base of the NPN transistor Q303 connected in parallel with the emitter resistor R305 and the capacitor C321, and the capacitor C318 between the output of the horizontal deflection circuit (hereinafter referred to as HP) and ground. And this output is connected to the primary side primary of transformer T304 via a capacitor C319, the end of which is grounded through a variable resistor VR301, and the secondary side of the capacitor C321 and a resistor R302. Is connected to the yoke coil of the cathode ray tube (CRT) and the branch point between the capacitor (C321) and the resistor (R302) is connected to the pseudo contact of the variable resistor (VR302) connected between the ground and the NPN transistor (Q303). It was made by connecting.
미설명부호 A, B, C, D는 기점, C320은 콘덴서, R303,304는 저항, VR301은 수평촛점조정용 가변저항이다.Reference numerals A, B, C, and D are the starting point, C320 is the capacitor, R303 and 304 are the resistors, and VR301 is the variable resistor for horizontal focus adjustment.
상기와 같은 구성으로 된 것이므로 전원공급부(POWER SUPPLY)에서 전원을 공급받아 동작하는 영상증폭부(VIDEO AMP)의 출력신호는 음극선관(CRT)의 그리드에 걸리게 됨은 공지와 같은 것이다. 또한 수직편향회로(VP)의 출력은 기점(D)에서 파형()콘덴서(C305)와 가변저항(VR305)에 의해 파라블라 파형()으로 변하게 되고 이 파형()은 가변저항(VR305)의 가변에 의해 진폭이 변하게 된다.Since it is configured as described above, the output signal of the video amplification unit (VIDEO AMP) operated by receiving power from the power supply unit (POWER SUPPLY) is caught on the grid of the cathode ray tube (CRT) as is known. In addition, the output of the vertical deflection circuit VP has a waveform (at The parabolic waveform is generated by the capacitor (C305) and the variable resistor (VR305). ) And this waveform ( ) Changes in amplitude due to the variable resistor VR305.
이 파형은 트랜지스터(Q304)의 베이스와 에미터를 거쳐 그대로 트랜지스터(Q303)의 베이스에 전달되고 그 트랜지스터(Q303)의 콜렉터에서 반전 증폭되어 파형(이 된다.This waveform is transferred to the base of the transistor Q303 as it is through the base and the emitter of the transistor Q304 and inverted and amplified by the collector of the transistor Q303. Becomes
이 파형이 트랜스(T304)에서 그대로 통과되고 콘덴서(C321), 저항(R302)을 통해 그리드(G4)에 공급된다.This waveform is passed through the transformer T304 as it is and is supplied to the grid G4 through the capacitor C321 and the resistor R302.
그리고 수평편형회로(HP)의 출력은 기점(C)에서 파형()와 같이 출력되어 콘덴서(C319), 트랜스(T304) 및 가변저항(VR301)을 통해 접지된다.The output of the horizontal flat circuit HP has a waveform ( ) Is grounded through the capacitor C319, the transformer T304, and the variable resistor VR301.
이때, 파라블라 파형()은 가변저항(VR301)에 의해 진폭이 가변되고 또한 트랜스(T304)를 통해 반전 증폭되어 기점(D)에서와 같은 파형이 되어 콘덴서(C321), 저항(R302)을 통해 음극선관(CRT)의 그리드(G4)에 전달된다.At this time, the parablade waveform ( ) Is variable in amplitude by the variable resistor VR301 and is inverted and amplified by the transformer T304 at the starting point D. The wave form is transferred to the grid G4 of the cathode ray tube CRT through the capacitor C321 and the resistor R302.
그리고 이 파형들은 기점(B)에서 콘덴서(C321)가 개방(open)일 경우 0-600V까지 가변되며(이것을 Static Focus라 칭함) 콘덴서(C321)에 의해 수평과 수직 파라블타가 결합되어 도면 제2도 (나)와 같이 형성된다.These waveforms are varied from 0 to 600V when the capacitor C321 is open at the starting point B (this is called a static focus), and the horizontal and vertical parameters are combined by the capacitor C321. It is formed as shown in (b).
조절은 수직영역에서 400Vp-p가 되도록 가변저항(VR305)을 조정하고 수평영역에서는 400Vp-p 가 되도록 가변저항(VR301)로 조정한 후 가변저항(VR302)을 돌려 실제화면을 직시하며 촛점(Focus)를 조정할 수 있게 되는 것이다.Adjust the variable resistor (VR305) so that it becomes 400Vp-p in the vertical area, and adjust it with the variable resistor (VR301) so that it becomes 400Vp-p in the horizontal area, and turn the variable resistor (VR302) to face the actual screen. ) Can be adjusted.
따라서 적당한 파형을 음주선관(CRT)에 독립적으로 제공하여 수직편향과 수평편향의 촛점 전압을 조정함으로서 수직과 수평이 뚜렷하고 선명한 영상표시를 얻을 수 있는 효과가 있는 것이다.Therefore, by providing the appropriate waveform independently to the drinking tube (CRT) by adjusting the focus voltage of the vertical deflection and the horizontal deflection, the vertical and horizontal clear and clear image display is effective.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850012495U KR900000254Y1 (en) | 1985-09-25 | 1985-09-25 | Adjustment circuit for the focus of monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850012495U KR900000254Y1 (en) | 1985-09-25 | 1985-09-25 | Adjustment circuit for the focus of monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870006007U KR870006007U (en) | 1987-04-25 |
| KR900000254Y1 true KR900000254Y1 (en) | 1990-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850012495U KR900000254Y1 (en) | 1985-09-25 | 1985-09-25 | Adjustment circuit for the focus of monitor |
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| Country | Link |
|---|---|
| KR (1) | KR900000254Y1 (en) |
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1985
- 1985-09-25 KR KR2019850012495U patent/KR900000254Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR870006007U (en) | 1987-04-25 |
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