KR960006478A - Nonlinear Deflection Speed Modulation Circuit of Television Receiver - Google Patents
Nonlinear Deflection Speed Modulation Circuit of Television Receiver Download PDFInfo
- Publication number
- KR960006478A KR960006478A KR1019940017150A KR19940017150A KR960006478A KR 960006478 A KR960006478 A KR 960006478A KR 1019940017150 A KR1019940017150 A KR 1019940017150A KR 19940017150 A KR19940017150 A KR 19940017150A KR 960006478 A KR960006478 A KR 960006478A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- clamper
- transistor
- speed modulation
- nonlinear
- Prior art date
Links
Classifications
-
- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/26—Push-pull amplifiers; Phase-splitters therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/002—Switching arrangements with several input- or output terminals
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
본 발명은 CPT(Color Picture Tube)영상 디스플레이에 있어서 전자비임(Beam)의 주사속도를 변화시켜 윤곽보정을 행하는 편향속도 변조(Scan Velocity Modulation;SVM)회로에 관한 것으로서, 특히 TV 영상신호의 진폭에 따라서 최적의 편향속도 변조동작을 행하여 과도한 속도변조로 인해 발생하는 오버 슈우팅(Over Shooting)과 언더 슈우팅(Under Shooting)의 불평형으로 인한 화면의 시각적 장애를 해결해 주는 텔레비젼 수상기의 비선형 편향속도 변조회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Scan Velocity Modulation (SVM) circuit that performs contour correction by varying the scanning speed of an electron beam in a color picture tube (CPT) image display. Therefore, the nonlinear deflection speed modulation circuit of the television set that solves the visual disturbance caused by the overshooting and undershooting caused by the excessive speed modulation by performing the optimum deflection speed modulation operation. It is about.
종래의 편향속도 변조회로는 입력되는 휘도신호의 크기에 관계없이(선형적으로)모두 증폭하여 편향비임의 속도를 제어하므로, 신호의 크기가 큰 신호 특, 흑과 백의 차이가 큰 신호에도 더욱 큰 속도변조가 이루어지게 되어 과도한 속도변조로 인해 발생되는 오버 슈우팅(Over Shooting)과 언더 슈우팅(Under Shooting)의 불평형으로 인해 화면이 거칠고 설세하지 않은 화면의 시각적 장애가 발생하는 문제점이 있다.The conventional deflection speed modulation circuit amplifies all (linearly) the irrespective of the magnitude of the input luminance signal and controls the speed of the deflection beam, so that even a signal having a large signal size and a signal having a large difference between black and white are larger. Due to the unbalance of overshooting and undershooting caused by the excessive speed modulation, the screen is coarse and there is a problem in that the visual impairment of the screen is not set.
따라서, 본 발명은 상기 문제점을 해결하기 위해 영상신호의 전폭과 관계없이 거의 일정한 상승거리와 오버슈트량을 유지하는 비선형 증폭부를 사용하여 과도한 속도변조로 인해 발생하는 오버 슈우팅(Over Shooting)과 언더 슈우팅(Under Shooting)의 불평형으로 인한 화면의 시각적 장애를 해결해 주는 텔레비젼 수상기의 편향속도 변조회로를 제공함을 목적으로 한다.Accordingly, in order to solve the above problem, the present invention uses an over-linear shooter that is caused by excessive speed modulation and overshooting and undershoot using a nonlinear amplifier that maintains an almost constant rise distance and overshoot amount regardless of the full width of the video signal. It is an object of the present invention to provide a deflection speed modulation circuit of a television receiver that solves visual disturbances caused by an unbalance of shooting.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제10도는 본 발명의 비선형 편향속도 변조회로의 블럭도.10 is a block diagram of a nonlinear deflection speed modulation circuit of the present invention.
제12도는 본 발명의 비선형 증폭부의 제1실시예의 회로도.12 is a circuit diagram of a first embodiment of the nonlinear amplifier of the present invention.
제14도는 본 발명의 비선형 증폭부의 제3실시예의 회로도.14 is a circuit diagram of a third embodiment of the nonlinear amplifier of the present invention.
제15도는 본 발명의 비선형 증폭부의 입출력 전달특성을 나타낸 도면.15 is a view showing the input and output transmission characteristics of the nonlinear amplifier of the present invention.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR94017150A KR970009495B1 (en) | 1994-07-15 | 1994-07-15 | A circuit for modulation of non-linear deflection velocity of tv |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR94017150A KR970009495B1 (en) | 1994-07-15 | 1994-07-15 | A circuit for modulation of non-linear deflection velocity of tv |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960006478A true KR960006478A (en) | 1996-02-23 |
KR970009495B1 KR970009495B1 (en) | 1997-06-13 |
Family
ID=19388119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR94017150A KR970009495B1 (en) | 1994-07-15 | 1994-07-15 | A circuit for modulation of non-linear deflection velocity of tv |
Country Status (1)
Country | Link |
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KR (1) | KR970009495B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6340995B1 (en) * | 1999-11-05 | 2002-01-22 | Thomson Licensing Sa | Emission control with scanning beam velocity modulation |
-
1994
- 1994-07-15 KR KR94017150A patent/KR970009495B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR970009495B1 (en) | 1997-06-13 |
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