KR950004909A - Automatic Noise Canceling Device for Television Receiver - Google Patents

Automatic Noise Canceling Device for Television Receiver Download PDF

Info

Publication number
KR950004909A
KR950004909A KR1019930014212A KR930014212A KR950004909A KR 950004909 A KR950004909 A KR 950004909A KR 1019930014212 A KR1019930014212 A KR 1019930014212A KR 930014212 A KR930014212 A KR 930014212A KR 950004909 A KR950004909 A KR 950004909A
Authority
KR
South Korea
Prior art keywords
gain control
noise
level
automatic
signal
Prior art date
Application number
KR1019930014212A
Other languages
Korean (ko)
Other versions
KR0139617B1 (en
Inventor
노관형
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930014212A priority Critical patent/KR0139617B1/en
Publication of KR950004909A publication Critical patent/KR950004909A/en
Application granted granted Critical
Publication of KR0139617B1 publication Critical patent/KR0139617B1/en

Links

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
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)

Abstract

본 발명은 안테나로부터 수신되어 검파된 영상 신호의 레벨에 따라 자동적으로 잡음 제거 기능을 구동시키도록 된 텔레비젼 수상기의 자동 잡음 제거장치에 관한 것으로서, 튜너 수단(2)에 의해 선국된 방송신호의 강도에 따라 자동 이득 제어신호(AGC)를 출력하는 중간 주파 회로수단(3)을 갖추고, 또 시청자에 의한 선택에 따라 영상 휘도신호(Y)에 포함되어 있는 잡음을 제거하는 잡음 제거수단(6)을 갖춘 영상 수신장치에 있어서, 상기 중간 주파 회로수단(3)으로부터 출력되는 자동 이득 제어신호(AGC)가 일정 레벨 이상인지를 검출하는 이득 제어 레벨 검출수단(11)과, 이 이득 제어 레벨 검출수단(11)의 검출 결과에 따라 상기 잡음 제거수단(6)을 구동하기 위한 구동신호를 출력하는 구동수단(12)을 포함하여 구성된 것을 특징으로 한다.The present invention relates to an automatic noise canceling apparatus of a television receiver configured to automatically drive a noise canceling function according to the level of a video signal received from an antenna and detected by the tuner means. And an intermediate frequency circuit means 3 for outputting an automatic gain control signal AGC, and a noise removing means 6 for removing noise contained in the image luminance signal Y according to the selection by the viewer. In the video receiving apparatus, gain control level detecting means (11) for detecting whether the automatic gain control signal (AGC) output from the intermediate frequency circuit means (3) is equal to or higher than a predetermined level, and the gain control level detecting means (11). And driving means 12 for outputting a driving signal for driving the noise removing means 6 in accordance with the detection result.

Description

텔레비젼 수상기의 자동 잡을 제거장치Automatic catch removal device of TV receiver

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

제 1 도는 텔레비젼 수상기의 영상 수신장치를 나타낸 블록 구성도, 제 2 도는 본 발명의 1실시예에 따른 텔레비젼 수상기의 자동 잡음 제거장치를 나타낸 회로 구성도, 제 3 도는 일반적인 OSD 장치를 나타낸 블록 구성도.1 is a block diagram showing an image receiving apparatus of a television receiver, FIG. 2 is a circuit diagram showing an automatic noise canceling apparatus for a television receiver according to an embodiment of the present invention, and FIG. 3 is a block diagram showing a general OSD device. .

Claims (6)

튜너 수단(2)에 의해 선국된 방송 신호의 강도에 따라 자동 이득 제어 신호(AGC)를 출력하는 중간 주파 회로수단(3)을 갖추고, 또 시청자에 의한 선택에 따라 영상 휘도 신호(Y)에 포함되어 있는 잡음을 제거하는 잡음 제거수단(6)을 갖춘 영상 수신 장치에 있어서, 상기 중간 주파 회로수단(3)으로부터 출력되는 자동 이득 제어신호(AGC)가 일정 레벨 이상인지를 검출하는 이득 제어 레벨 검출수단(11)과, 이 이득 제어 레벨 검출수단(11)의 검출 결과에 따라 상기 잡음 제거수단(6)을 구동하기 위한 구동 신호를 출력하는 구동수단(12)을 포함하여 구성된 것을 특징으로 하는 텔레비젼 수상기의 자동 잡음 제거장치.An intermediate frequency circuit means 3 for outputting an automatic gain control signal AGC according to the strength of the broadcast signal tuned by the tuner means 2, and included in the image luminance signal Y according to the selection by the viewer; In an image receiving device having a noise removing means (6) for removing a noise, a gain control level detection for detecting whether an automatic gain control signal (AGC) output from the intermediate frequency circuit means (3) is a predetermined level or more. And means (11) and drive means (12) for outputting a drive signal for driving said noise canceling means (6) in accordance with the detection result of said gain control level detecting means (11). Automatic noise reduction device of the receiver. 제 1 항에 있어서, 상기 구동부(12)로부터 출력되는 구동신호를 근거로 잡음 제거수단(6)이 작동중임을 CRT상에 표시하는 OSD장치가 추가로 갖추어진 것을 특징으로 하는 텔레비젼 수상기의 자동 잡음 제거장치.2. The automatic noise of the television receiver according to claim 1, further comprising an OSD device for displaying on the CRT that the noise canceling means (6) is operating on the basis of the drive signal output from the driver (12). Removal device. 제 1 항에 있어서, 상기 잡음 제거수단(6)은 인가되는 구동신호의 레벨에 따라 잡음 제거 레벨이 변화되는 것임을 특징으로 하는 텔레비젼 수상기의 자동 잡음 제거장치.2. The automatic noise canceling device according to claim 1, wherein said noise canceling means (6) is characterized in that the noise canceling level is changed in accordance with the level of a driving signal applied thereto. 제 3 항에 있어서, 상기 구동수단(12)은 구동신호의 레벨을 가변시키는 가변수단을 포함하여 구성되는 것을 특징으로 하는 텔레비젼 수상기의 자동 잡음 제거장치.4. The apparatus of claim 3, wherein the drive means (12) comprises variable means for varying the level of the drive signal. 제 1 항 또는 제 2 항에 있어서, 상기 이득 제어 레벨 검출수단(11)은 자동 이득 제어신호(AGC)의 레벨을 분압하는 분할 저항(R1,R2)과, 이 분할 저항(R1,R2)에 의한 분할 전압이 일정 전위 이상일 때 온되는 제너다이오드(ZD1)로 구성된 것을 특징으로 하는 텔레비젼 수상기의 자동 잡음 제거장치.3. The gain control level detecting means (11) according to claim 1 or 2, characterized in that the gain control level detecting means (11) is provided with divided resistors (R1, R2) for dividing the level of the automatic gain control signal (AGC), And a zener diode (ZD1) which is turned on when the divided voltage is higher than or equal to a predetermined potential. 제 1 항 또는 제 2 항에 있어서, 상기 이득 제어 레벨 검출수단(11)은 자동 이득 제어신호(AGC)의 레벨이 일정 기준 전위 이상인지를 검출하는 비교기로 구성되는 것을 특징으로 하는 텔레비젼 수상기의 자동 잡음 제거장치.3. The television receiver according to claim 1 or 2, characterized in that the gain control level detecting means (11) comprises a comparator for detecting whether the level of the automatic gain control signal (AGC) is equal to or greater than a predetermined reference potential. Noise Canceller. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930014212A 1993-07-26 1993-07-26 Automatic noise cancelling circuit of television receiver KR0139617B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930014212A KR0139617B1 (en) 1993-07-26 1993-07-26 Automatic noise cancelling circuit of television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930014212A KR0139617B1 (en) 1993-07-26 1993-07-26 Automatic noise cancelling circuit of television receiver

Publications (2)

Publication Number Publication Date
KR950004909A true KR950004909A (en) 1995-02-18
KR0139617B1 KR0139617B1 (en) 1998-06-15

Family

ID=19360057

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930014212A KR0139617B1 (en) 1993-07-26 1993-07-26 Automatic noise cancelling circuit of television receiver

Country Status (1)

Country Link
KR (1) KR0139617B1 (en)

Also Published As

Publication number Publication date
KR0139617B1 (en) 1998-06-15

Similar Documents

Publication Publication Date Title
KR930019036A (en) How to reduce HRC mode reception time in cable television
KR950004909A (en) Automatic Noise Canceling Device for Television Receiver
KR930004657Y1 (en) Tv band matching circuit
KR960013020A (en) Signal interference prevention device at the time of video mode change of TV receiver
KR100216942B1 (en) Apparatus and method for changing from 2-screen in fading tv
KR970057024A (en) Automatic switching to VCR mode when playing a VCR on a television receiver
KR970031991A (en) Automatic Video Mute Device for Television Receiver
KR970057017A (en) Television receiver with automatic channel search results
KR970078581A (en) How to set the text mode on a television equipped with teletext reception
KR960033058A (en) Video mute device during channel switching of television receiver
KR970014110A (en) Video mute circuit at power on / off of television receiver
KR970057316A (en) Sub-screen music broadcasting automatic tuning circuit of television receiver and its method
KR970057376A (en) Automatic channel switching method when playing a VCR on a television receiver
KR960009607A (en) Vertical Sync Stabilizer for Multi-System TV
KR930003721A (en) Automatic tuning method and apparatus of TV receiver
KR970057105A (en) TV receiver with screen adjustment status recognition device
KR970014167A (en) Television receiver with selective output restriction function of broadcasting signal
KR960032890A (en) Improved Channel Selection Method
KR940003327A (en) Image noise reduction circuit in automatic memory of TV
KR970057088A (en) Control device based on detection of TV's initial viewing program
KR970014181A (en) APAPATUS FOR WARING OF AUDIO SIGNAL ABNORMAL INPUT AT VIDEO MODE
KR970057352A (en) TV with sub picture function
KR960033055A (en) Video and audio mute circuits during mode switching of television receivers
KR970057349A (en) Television with automatic 9-screen PIP function during screen adjustment time
KR930007289A (en) Color Correction Circuit for On-screen Display Characters

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
J2X1 Appeal (before the patent court)

Free format text: APPEAL AGAINST DECISION TO DECLINE REFUSAL

B701 Decision to grant
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee