KR920014188A - Black. Back Level Adaptive Sharpness Circuit - Google Patents

Black. Back Level Adaptive Sharpness Circuit Download PDF

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Publication number
KR920014188A
KR920014188A KR1019900022905A KR900022905A KR920014188A KR 920014188 A KR920014188 A KR 920014188A KR 1019900022905 A KR1019900022905 A KR 1019900022905A KR 900022905 A KR900022905 A KR 900022905A KR 920014188 A KR920014188 A KR 920014188A
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KR
South Korea
Prior art keywords
black
input
level adaptive
output
nonlinear
Prior art date
Application number
KR1019900022905A
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Korean (ko)
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KR940000951B1 (en
Inventor
이준영
Original Assignee
이헌조
주식회사 금성사
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Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019900022905A priority Critical patent/KR940000951B1/en
Publication of KR920014188A publication Critical patent/KR920014188A/en
Application granted granted Critical
Publication of KR940000951B1 publication Critical patent/KR940000951B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/16—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/18—Circuitry for reinsertion of DC and slowly varying components of signal; Circuitry for preservation of black or white level by means of "clamp" circuit operated by switching circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

내용 없음No content

Description

흑. 백 레벨 적응형 Sharpness 회로Black. Back Level Adaptive Sharpness Circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 Sharpness 회로 구성도, 제2도는 본 발명에 적용된 비선형 소자 구성 회로도, 제3도는 본 발명에 적용된 비선형 특성 소자 전달 특성도, 제4도는 노이즈 신호 감쇄의 원리 설명도.1 is a sharpness circuit diagram of the present invention, FIG. 2 is a nonlinear device configuration circuit diagram applied to the present invention, FIG. 3 is a nonlinear characteristic device transfer characteristic diagram applied to the present invention, and FIG. 4 is a diagram for explaining the principle of noise signal attenuation.

Claims (2)

버퍼(201)에 의해 입력된 신호(Xo)를 스위치(SW1)에 의해 제어를 받는 로우 패스필터(202)에 의해 입력받아 일정 범위 이하 또는 이상은 일정 이득을 갖고 출력되고 일정범위 이내는 클램핑 되어 출력 되도록 하는 비선형 특성소자(203)와, 상기 소자(203)에서 출력된 신호에 의해 이득을 가변하여 상기 합산기(206)에서 출력신호를 증폭하는 증폭기(204)로 구성된 것을 특징으로 하여 신호레벨에 관계없이 일정한 선명도를 유지하도록 하는 흑, 백 레벨 적응형 Sharpness 장치.The signal Xo input by the buffer 201 is inputted by the low pass filter 202 controlled by the switch SW1, and the output is performed with a certain gain below or above a certain range and clamped within a certain range. And a nonlinear characteristic element 203 for outputting, and an amplifier 204 for varying the gain by the signal output from the element 203 and amplifying the output signal in the summer 206. Black and white level adaptive sharpness device to maintain constant sharpness regardless. 제1항에 있어서, 비선형소자(203)는 입력전압과 일정전류(Io)를 입력으로 받아 스위칭부(215)의 입력전류를 제어하는 스위칭 제어부(214)와, 상기 스위칭부가 온되면 저항(R1)(R2)및 기준전원(B+)에 의해 결정된 지점에서 부터 최종 출력을 선형으로 출력되도록 하는 클램프 회로부(216)로 구성된 것을 특징으로 하는 흑, 백 레벨 적응형 sharpness 장치.The nonlinear device 203 of claim 1, wherein the nonlinear element 203 receives an input voltage and a constant current Io as an input, and controls the input current of the switching unit 215 and the resistor R when the switching unit is turned on. 1 ) A black and white level adaptive sharpness device, characterized in that it comprises a clamp circuit portion 216 for linearly outputting the final output from the point determined by (R 2 ) and the reference power source (B + ). ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019900022905A 1990-12-31 1990-12-31 Black and white level adaptive sharpness device. KR940000951B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900022905A KR940000951B1 (en) 1990-12-31 1990-12-31 Black and white level adaptive sharpness device.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900022905A KR940000951B1 (en) 1990-12-31 1990-12-31 Black and white level adaptive sharpness device.

Publications (2)

Publication Number Publication Date
KR920014188A true KR920014188A (en) 1992-07-30
KR940000951B1 KR940000951B1 (en) 1994-02-04

Family

ID=19309315

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900022905A KR940000951B1 (en) 1990-12-31 1990-12-31 Black and white level adaptive sharpness device.

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KR (1) KR940000951B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7191402B2 (en) 2001-05-10 2007-03-13 Samsung Electronics Co., Ltd. Method and apparatus for adjusting contrast and sharpness for regions in a display device
KR100462598B1 (en) 2002-02-20 2004-12-20 삼성전자주식회사 Wireless LAN card having function of access point and network Printer having the same and Method for transmitting data using the printer

Also Published As

Publication number Publication date
KR940000951B1 (en) 1994-02-04

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