KR20000034508A - Device for controlling automatic gain control voltage of television receiver - Google Patents

Device for controlling automatic gain control voltage of television receiver Download PDF

Info

Publication number
KR20000034508A
KR20000034508A KR1019980051844A KR19980051844A KR20000034508A KR 20000034508 A KR20000034508 A KR 20000034508A KR 1019980051844 A KR1019980051844 A KR 1019980051844A KR 19980051844 A KR19980051844 A KR 19980051844A KR 20000034508 A KR20000034508 A KR 20000034508A
Authority
KR
South Korea
Prior art keywords
signal
agc
automatic gain
voltage
gain control
Prior art date
Application number
KR1019980051844A
Other languages
Korean (ko)
Inventor
조춘근
Original Assignee
전주범
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 전주범, 대우전자 주식회사 filed Critical 전주범
Priority to KR1019980051844A priority Critical patent/KR20000034508A/en
Publication of KR20000034508A publication Critical patent/KR20000034508A/en

Links

Classifications

    • 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
    • H04N5/52—Automatic gain control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/485—End-user interface for client configuration

Abstract

PURPOSE: A device for controlling automatic gain control voltage of television receiver is provided so that a user can control AGC(automatic gain control) signal voltage value easily by adding the output of PWM of a microprocessor varied according to the user's control. CONSTITUTION: A device for controlling automatic gain control voltage of television receiver includes a tuner unit(302) for converting RF broadcasting signal into IF signal. An IF demodulator(304) amplifies and demodulates the IF signal and then outputs the composite image signal. A video processing unit(306) separates horizontal and vertical synchronous signals from the composite image signal and outputs R,G,B signals by processing luminance and color-difference signals. At this time, the video processing unit(306) provides voltage corresponding to the receiving signal to an AGC circuit(308). The AGC circuit(308) provides AGC signals to the tuner(302) in order to control amplifying intensity according to the received intensity.

Description

텔레비젼 수상기의 자동이득제어 전압 조절장치(Apparatus for adjusting Automatic Gain Control Voltage In a television receiver)Apparatus for adjusting Automatic Gain Control Voltage In a television receiver

본 발명은 텔레비젼 수상기에서 수신세기에 따라 고주파(RF) 증폭 이득을 제어하는 자동이득제어(AGC: Automatic Gain Control)기술에 관한 것으로, 더욱 상세하게는 자동이득제어를 위한 AGC신호 전압값을 사용자 제어(user control)에 의해 조절할 수 있는 자동이득제어(AGC) 전압 조절장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic gain control (AGC) technique for controlling high frequency (RF) amplification gain in accordance with reception strength in a television receiver, and more particularly to user control of an AGC signal voltage value for automatic gain control. The present invention relates to an automatic gain control (AGC) voltage regulator that can be controlled by a user control.

일반적으로, 안테나를 통해 수신된 텔레비젼 방송의 무선신호는 그 수신세기가 지역에 따라 다르기 때문에 수신신호의 세기에 따라 고주파 증폭기의 이득을 조정할 필요가 있다. 이와 같이 수신신호의 세기에 따라 이득을 자동으로 조정해주는 기능을 자동이득제어(AGC)라 하는데, 텔레비젼 수상기에 있어서 종래의 자동이득제어회로는 비디오처리부에서 수신된 RF신호의 세기에 상응하는 아날로그 전압을 출력하면 이에 따라 AGC회로가 튜너에 내장된 고주파 증폭기의 이득을 조정하기 위한 AGC신호전압을 발생하였다.In general, since a radio signal of a television broadcast received through an antenna has its reception strength varying from region to region, it is necessary to adjust the gain of the high frequency amplifier according to the strength of the reception signal. The function of automatically adjusting the gain according to the strength of the received signal is called automatic gain control (AGC). In a television receiver, a conventional automatic gain control circuit uses an analog voltage corresponding to the strength of an RF signal received from a video processor. As a result, the AGC circuit generated AGC signal voltage to adjust the gain of the high frequency amplifier built in the tuner.

그리고 텔레비젼 수상기를 조립할 때, 각종 파라메터를 시험 및 조정하는 공정에서 AGC신호전압을 조정할 필요가 있는 바, 도 1과 같은 종래의 AGC회로를 이용하여 AGC를 조정하는 절차는 도 2에 도시된 바와 같다. 여기서, AGC 조정이란 AGC신호 전압값은 안테나 입력단의 RF수신세기에 따라 변화되므로 정해진 입력신호에 따라 정해진 AGC전압이 발생되도록 가변저항을 조절하는 것이다.And when assembling the television receiver, it is necessary to adjust the AGC signal voltage in the process of testing and adjusting various parameters, the procedure for adjusting the AGC using a conventional AGC circuit as shown in Figure 1 is shown in FIG. . Here, the AGC adjustment means that the AGC signal voltage value is changed according to the RF reception strength of the antenna input, so that the variable resistor is adjusted to generate a predetermined AGC voltage according to a predetermined input signal.

도 1을 참조하면, 종래의 AGC 계통은 튜너(102), IF복조부(104), 비디오 처리부(106), 가변저항(VR1)이 연결된 AGC회로(108)로 이루어져 가변저항(VR1)에 의해 AGC신호의 크기를 조절할 수 있게 되어 있다.Referring to FIG. 1, a conventional AGC system includes an AGC circuit 108 to which a tuner 102, an IF demodulator 104, a video processor 106, and a variable resistor VR1 are connected by a variable resistor VR1. The magnitude of the AGC signal can be adjusted.

그리고 이와 같은 AGC회로를 이용하여 AGC를 조정하는 과정은 도 2에 도시된 바와 같이, 단계 S1에서는 조립 완료된 텔레비젼 수상기의 RF입력단에 정규 칼라 바 신호를 제공한 후 안테나 입력을 60dB로 조절한다. 단계 S2에서는 메인 PCB의 RF AGC핀에 디지털 전압계 혹은 오실로스코프를 연결하여 전압을 측정할 수 있게 하고, 단계 S3에서는 가변저항을 조절하여 RF-AGC 전압을 가변하여 최대 전압값을 구한다. 그리고 단계 S4에서는 RF-AGC신호전압이 단계 S3에서 구한 최대 전압치보다 약 0.4 내지 0.5V 낮도록 가변저항을 조절하고, 단계 S5에서는 입력신호를 64 dB로 하여 RF-AGC 전압값의 변화를 확인함과 아울러, 단계 S6에서는 무신호시 혹은 입력신호를 60dB 보다 낮게 하여 RF-AGC 전압값의 변화를 확인한다.In the process of adjusting the AGC using the AGC circuit as shown in FIG. 2, in step S1, after providing a regular color bar signal to the RF input terminal of the assembled television receiver, the antenna input is adjusted to 60 dB. In step S2, a digital voltmeter or an oscilloscope is connected to the RF AGC pin of the main PCB to measure the voltage. In step S3, the RF-AGC voltage is varied by adjusting a variable resistor to obtain a maximum voltage value. In step S4, the variable resistor is adjusted so that the RF-AGC signal voltage is about 0.4 to 0.5V lower than the maximum voltage value obtained in step S3. In step S5, the change in the RF-AGC voltage value is confirmed by setting the input signal to 64 dB. In addition, in step S6, the change in the RF-AGC voltage value is checked when no signal or the input signal is lower than 60 dB.

그런데 이와 같이 종래의 AGC회로를 채용한 텔레비젼 수상기는 에프터 서비스(A/S)시와 같이 AGC조정을 할 필요가 있을 때는 텔레비젼 수상기 세트의 커버를 풀고 해당 가변저항을 조정해야 했기 때문에 매우 불편한 문제점이 있다.However, when the TV receiver adopting the conventional AGC circuit needs to adjust the AGC as in after-sales service (A / S), it is very inconvenient because the TV receiver set needs to be uncovered and the corresponding variable resistor adjusted. have.

이에 본 발명은 상기와 같은 문제점을 해소하기 위하여 안출된 것으로, AGC신호전압을 사용자 제어(user control)로 간편하게 조절할 수 있게 된 텔레비젼 수상기의 자동이득제어 전압 조절장치를 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide an automatic gain control voltage regulating device for a television receiver that can easily adjust the AGC signal voltage to a user control.

상기와 같은 목적을 달성하기 위하여 본 발명의 장치는, 안테나를 통해 수신된 RF신호의 크기에 대응하는 자동이득제어(AGC)신호를 입력받아 고주파 증폭기의 증폭이득을 조정하여 상기 고주파 증폭기의 출력을 안정화시키는 텔레비젼 수상기의 자동이득제어(AGC)회로에 있어서,In order to achieve the above object, the apparatus of the present invention receives an automatic gain control (AGC) signal corresponding to the magnitude of the RF signal received through the antenna and adjusts the amplification gain of the high frequency amplifier to adjust the output of the high frequency amplifier. In the automatic gain control (AGC) circuit of a television receiver to stabilize,

상기 수신된 RF신호에 대응하여 증폭도를 조정하기 위한 AGC신호를 발생하는 AGC회로; AGC신호를 가변하기 위한 키입력수단; 상기 키입력수단을 통해 AGC신호 전압값 증가가 요구되면, 현재의 PWM신호보다 온타임을 한 스텝 길게 하여 PWM신호를 출력하고, AGC신호 전압값 감소가 요구되면, 현재의 PWM신호보다 온타임을 한스텝 짧게 하여 PWM신호를 출력하는 PWM신호 발생수단; 상기 PWM신호 발생수단의 출력을 정류하여 아날로그 직류전압을 출력하는 정류부; 및 상기 정류부의 출력과 상기 AGC회로의 출력을 가산하는 가산부로 구성된 것을 특징으로 한다.An AGC circuit for generating an AGC signal for adjusting amplification degree in response to the received RF signal; Key input means for varying the AGC signal; When the AGC signal voltage value is increased through the key input means, the PWM signal is output by one step longer than the current PWM signal, and when the AGC signal voltage value is required to be reduced, the on time is greater than the current PWM signal. PWM signal generating means for outputting a PWM signal by one step shorter; A rectifier for rectifying the output of the PWM signal generating means and outputting an analog DC voltage; And an adder for adding the output of the rectifier and the output of the AGC circuit.

이와 같은 본 발명은 AGC회로의 출력에 사용자 제어에 따라 가변되는 마이콤의 PWM출력을 가산하여 AGC신호의 전압값을 간편하게 조절할 수 있는 잇점을 제공한다.As described above, the present invention provides an advantage that the voltage value of the AGC signal can be easily adjusted by adding the PWM output of the microcomputer to the output of the AGC circuit.

도 1은 텔레비젼 수상기에 있어서 종래의 AGC회로를 조시한 개략도,1 is a schematic diagram showing a conventional AGC circuit in a television receiver;

도 2는 도 1과 같은 구성에서 AGC를 조정하는 종래의 절차를 도시한 흐름도,2 is a flowchart illustrating a conventional procedure of adjusting AGC in the configuration as shown in FIG. 1;

도 3은 텔레비젼 수상기에서 본 발명에 따른 AGC회로를 도시한 블록도,3 is a block diagram showing an AGC circuit according to the present invention in a television receiver;

도 4은 본 발명에 따라 AGC신호전압을 조정하는 절차를 도시한 흐름도이다.4 is a flowchart illustrating a procedure of adjusting AGC signal voltage according to the present invention.

*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

302: 튜너 304: IF복조부302: tuner 304: IF demodulation

306: 비디오처리부 308: AGC회로306: video processing unit 308: AGC circuit

310: 가산부 320: 리모콘 송신기310: adder 320: remote control transmitter

322: 리모콘 수신부 324: 마이콤322: remote control receiver 324: micom

326: 정류부326: rectifier

이하, 첨부된 도면을 참조하여 본 발명의 실시예를 자세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명이 적용된 텔레비젼 수상기의 일부 구성을 도시한 블록도이다. 도 3을 참조하면, 본 발명의 텔레비젼 수상기는 튜너(302), IF복조부(304), 비디오처리부(306), AGC회로(308), 가산부(310), 리모콘 송신기(320), 리모콘 수신부(322), 마이콤(324), 정류부(326)를 포함한다.3 is a block diagram showing a partial configuration of a television receiver to which the present invention is applied. Referring to FIG. 3, the television receiver of the present invention includes a tuner 302, an IF demodulator 304, a video processor 306, an AGC circuit 308, an adder 310, a remote controller transmitter 320, and a remote controller receiver. 322, the microcomputer 324, and the rectifying unit 326.

튜너부(302)는 도면에는 도시되지 않았으나 AGC신호 전압값에 따라 증폭도를 가변하는 고주파 증폭기와, 마이콤의 선국제어신호에 따라 발진주파수를 달리하는 전압제어발진기, 믹서등을 포함하여 안테나를 통해 수신된 RF방송신호를 중간주파(IF)신호로 변환한다. IF복조기(304)는 중간주파신호를 증폭 및 복조하여 복합영상신호를 출력하고, 비디오처리부(306)는 복합영상신호에서 수직,수평동기를 분리함과 아울러 휘도신호와 색차신호를 처리하여 R,G,B신호를 출력한다. 이때 비디오프로세서(306)는 수신신호의 크기에 상응하는 전압을 AGC회로(308)에 제공하고, AGC회로(308)는 수신세기에 따라 증폭도를 조정하기 위한 AGC신호를 튜너(302)에 제공한다.Although not shown in the drawing, the tuner 302 is received through an antenna including a high frequency amplifier that varies the amplification degree according to the AGC signal voltage value, a voltage controlled oscillator that varies the oscillation frequency according to the pre-international language signal of the microcomputer, and a mixer. Converts the received RF broadcast signal into an intermediate frequency (IF) signal. The IF demodulator 304 amplifies and demodulates an intermediate frequency signal and outputs a composite video signal. The video processor 306 separates vertical and horizontal synchronisms from the composite video signal, and processes luminance and color difference signals. Outputs G and B signals. In this case, the video processor 306 provides a voltage corresponding to the magnitude of the received signal to the AGC circuit 308, and the AGC circuit 308 provides the tuner 302 with an AGC signal for adjusting the amplification degree according to the reception strength. .

한편, 사용자가 RF-AGC 조정을 위해서 혹은 필요에 따라 AGC신호전압을 조절할 필요가 있을 때, 본 발명에 따라 리모콘 키조작에 따라 AGC회로가 출력하는 신호전압을 크게 하거나 낮게 조절할 수 있다.On the other hand, when the user needs to adjust the AGC signal voltage for RF-AGC adjustment or if necessary, according to the present invention can adjust the signal voltage output from the AGC circuit to increase or decrease according to the remote control key operation.

리모콘 송신기는 사용자가 누르는 키에 따른 적외선신호를 발생하고, 리모콘 수신부는 적외선신호를 검파한다. 마이콤은 리모콘 수신부로부터 데이터를 입력받아 해석하여 사용자가 원하는 기능을 수행한다. 이때 도면에는 도시되지 않았으나 사용자 제어는 리모콘 조작뿐만 아니라 텔레비젼 수상기의 전면에 설치된 키매트릭스의 조작을 통해서도 수행할 수 있다.The remote control transmitter generates an infrared signal according to a key pressed by the user, and the remote control receiver detects the infrared signal. The microcomputer receives data from the remote control receiver and interprets it to perform a function desired by the user. In this case, although not shown in the drawing, user control may be performed not only by using a remote controller but also by operating a key matrix installed in the front of the television receiver.

도 3에서 마이콤은 리모콘 혹은 키매트릭스를 통해 AGC 전압 조정을 인지하면, 도 4에 도시된 바와 같은 절차를 수행하여 AGC전압을 증가 혹은 감소시킨다. 정류부는 RC적분회로 및 버퍼로 구성되어 마이콤이 출력하는 PWM신호를 아날로그 직류전압으로 변환하고, 가산부는 AGC회로의 출력에 정류부의 출력을 가산하여 AGC 신호를 튜너에 제공한다. 이와 같이 AGC회로가 출력은 가산부에서 사용자 에어에 의한 AGC전압과 가감되어 튜너에 제공되므로써 종래와 같이 가변저항을 조절하지 않고서도 AGC신호의 크기를 용이하게 가변할 수 있다.In FIG. 3, when the microcomputer recognizes the AGC voltage adjustment through the remote controller or the key matrix, the microcomputer increases or decreases the AGC voltage by performing the procedure shown in FIG. 4. The rectifier is composed of an RC integrating circuit and a buffer to convert the PWM signal output by the microcomputer into an analog DC voltage, and the adder adds the output of the rectifier to the output of the AGC circuit to provide the AGC signal to the tuner. In this way, the AGC circuit output is added to the tuner by being added to or subtracted from the AGC voltage by the user air in the adder so that the magnitude of the AGC signal can be easily changed without adjusting the variable resistor as in the prior art.

도 4를 참조하면, 단계 41에서는 AGC신호를 조정하기 위해 AGC 키가 입력되는지를 판단한다. 사용자가 AGC신호를 조정하고자 할 경우에 리모콘 혹은 키매트릭스의 AGC키를 누르게 된다. 이에 따라 마이콤은 OSD를 통해 조정 메뉴를 띄워 레벨업 다운 키 조작을 요구한다. 단계 42에서는 사용자가 레벨업 키를 입력하는지를 감시하여 레벨업 키가 입력되면, 단계43에서 현재의 AGC전압을 1스텝 증가시키고, 단계 44에서는 사용자가 레벨 다운 키를 입력하는지를 감시하여 레벨 다운 키가 입력되면, 단계 45에서 현재의 AGC전압을 1스텝 감소시킨다.Referring to FIG. 4, in step 41, it is determined whether an AGC key is input to adjust an AGC signal. When the user wants to adjust the AGC signal, he presses the AGC key on the remote control or key matrix. As a result, Micom pops up an adjustment menu through the OSD and requires the level up and down key operation. In step 42, if the user inputs the level up key, and the level up key is input, in step 43, the current AGC voltage is increased by one step. In step 44, the user enters the level down key. If input, the current AGC voltage is decreased by one step at step 45.

즉, 마이콤은 PWM포트를 통해서 온/오프 듀티비가 가변되는 PWM신호를 출력하는데, 사용자가 AGC신호를 증가시키려 레벨 업 키를 입력하면 온타임이 상대적으로 긴 PWM펄스를 출력하고, 이에 따라 정류부에서 정류된 DC전압이 커져 AGC신호의 전압값이 증가하게 된다. 반대로, 사용자가 AGC신호를 감소시키려 레벨 다운 키를 입력하면 온타임이 상대적으로 짧은 PWM펄스를 출력하고, 이에 따라 정류부에서 정류된 DC전압이 작아져 AGC신호의 전압값이 감소가하게 된다.In other words, the microcomputer outputs a PWM signal whose on / off duty ratio is variable through the PWM port. When the user inputs a level up key to increase the AGC signal, the microcomputer outputs a PWM pulse with a relatively long on time. The rectified DC voltage is increased to increase the voltage value of the AGC signal. On the contrary, when the user inputs the level down key to decrease the AGC signal, the PWM pulse is output with a relatively short on-time. Accordingly, the DC voltage rectified in the rectifying unit is reduced, thereby reducing the voltage value of the AGC signal.

이상에서 살펴본 바와 같이, 본 발명에 따르면 AGC회로의 출력에 사용자제어에 따라 가변되는 마이콤의 PWM출력을 가산하여 AGC신호의 전압값을 간편하게 조절할 수 있는 효과가 있다.As described above, according to the present invention, the voltage of the AGC signal can be easily adjusted by adding the PWM output of the microcomputer to the output of the AGC circuit.

Claims (3)

안테나를 통해 수신된 RF신호의 크기에 대응하는 자동이득제어(AGC)신호를 입력받아 고주파 증폭기의 증폭이득을 조정하여 상기 고주파 증폭기의 출력을 안정화시키는 텔레비젼 수상기의 자동이득제어(AGC)회로에 있어서,In an automatic gain control (AGC) circuit of a television receiver which receives an automatic gain control (AGC) signal corresponding to the magnitude of an RF signal received through an antenna and adjusts the amplification gain of the high frequency amplifier to stabilize the output of the high frequency amplifier. , 상기 수신된 RF신호에 대응하여 증폭도를 조정하기 위한 AGC신호를 발생하는 AGC회로(308);An AGC circuit 308 for generating an AGC signal for adjusting amplification degree in response to the received RF signal; AGC신호를 가변하기 위한 키입력수단;Key input means for varying the AGC signal; 상기 키입력수단을 통해 AGC신호 전압값 증가가 요구되면, 현재의 PWM신호보다 온타임을 한 스텝 길게 하여 PWM신호를 출력하고, AGC신호 전압값 감소가 요구되면, 현재의 PWM신호보다 온타임을 한스텝 짧게 하여 PWM신호를 출력하는 PWM신호 발생수단;When the AGC signal voltage value is increased through the key input means, the PWM signal is output by one step longer than the current PWM signal, and when the AGC signal voltage value is required to be reduced, the on time is greater than the current PWM signal. PWM signal generating means for outputting a PWM signal by one step shorter; 상기 PWM신호 발생수단의 출력을 정류하여 아날로그 직류전압을 출력하는 정류부(326); 및A rectifier 326 for rectifying the output of the PWM signal generating means and outputting an analog DC voltage; And 상기 정류부의 출력과 상기 AGC회로의 출력을 가산하는 가산부(310)를 포함하는 것을 특징으로 하는 텔레비젼 수상기의 자동이득제어 전압 표시장치.And an adder (310) for adding the output of the rectifier and the output of the AGC circuit. 제1항에 있어서, 상기 PWM신호 발생수단은 마이콤(324)으로 구현된 것을 특징으로 하는 텔레비젼 수상기의 자동이득제어 전압 표시장치.The apparatus of claim 1, wherein the PWM signal generating means is implemented by a microcomputer (324). 제1항에 있어서, 상기 키입력수단은 리모콘 송신기와 리모콘 수신기로 이루어진 것을 특징으로 하는 텔레비젼 수상기의 자동이득제어 전압 표시장치.2. The automatic gain control voltage display of claim 1, wherein the key input means comprises a remote control transmitter and a remote control receiver.
KR1019980051844A 1998-11-30 1998-11-30 Device for controlling automatic gain control voltage of television receiver KR20000034508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980051844A KR20000034508A (en) 1998-11-30 1998-11-30 Device for controlling automatic gain control voltage of television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980051844A KR20000034508A (en) 1998-11-30 1998-11-30 Device for controlling automatic gain control voltage of television receiver

Publications (1)

Publication Number Publication Date
KR20000034508A true KR20000034508A (en) 2000-06-26

Family

ID=19560461

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980051844A KR20000034508A (en) 1998-11-30 1998-11-30 Device for controlling automatic gain control voltage of television receiver

Country Status (1)

Country Link
KR (1) KR20000034508A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7259513B2 (en) 2004-02-20 2007-08-21 Samsung Sdi Co., Ltd. Electroluminescent display device having surface treated organic layer and method of fabricating the same
US7264915B2 (en) 2005-11-07 2007-09-04 Samsung Sdi Co., Ltd. Manufacturing method for donor film with improved surface roughness
US7361416B2 (en) 2003-08-28 2008-04-22 Samsung Sdi Co., Ltd. Donor film for flat panel display and method of fabricating OLED using the same
US7517593B2 (en) 2004-09-08 2009-04-14 Samsung Mobile Display Co., Ltd. Donor substrate for laser induced thermal imaging method and organic electroluminescent display device fabricated using the same
KR100917186B1 (en) * 2002-07-12 2009-09-15 엘지전자 주식회사 digital TV receiver
US7625615B2 (en) 2003-11-25 2009-12-01 Samsung Mobile Display Co., Ltd. Donor substrate for full-color organic electroluminescent display device, method of manufacturing the same, and full-color organic electroluminescent display device using donor substrate
US7687153B2 (en) 2003-11-29 2010-03-30 Samsung Mobile Display Co., Ltd. Donor substrate for laser transfer and organic electroluminescence display device manufactured using the same
US9272364B2 (en) 2005-02-22 2016-03-01 Samsung Display Co., Ltd. Laser irradiation device and laser induced thermal imaging method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100917186B1 (en) * 2002-07-12 2009-09-15 엘지전자 주식회사 digital TV receiver
US7361416B2 (en) 2003-08-28 2008-04-22 Samsung Sdi Co., Ltd. Donor film for flat panel display and method of fabricating OLED using the same
US7625615B2 (en) 2003-11-25 2009-12-01 Samsung Mobile Display Co., Ltd. Donor substrate for full-color organic electroluminescent display device, method of manufacturing the same, and full-color organic electroluminescent display device using donor substrate
US7687153B2 (en) 2003-11-29 2010-03-30 Samsung Mobile Display Co., Ltd. Donor substrate for laser transfer and organic electroluminescence display device manufactured using the same
US7259513B2 (en) 2004-02-20 2007-08-21 Samsung Sdi Co., Ltd. Electroluminescent display device having surface treated organic layer and method of fabricating the same
US7517593B2 (en) 2004-09-08 2009-04-14 Samsung Mobile Display Co., Ltd. Donor substrate for laser induced thermal imaging method and organic electroluminescent display device fabricated using the same
US9272364B2 (en) 2005-02-22 2016-03-01 Samsung Display Co., Ltd. Laser irradiation device and laser induced thermal imaging method
US7264915B2 (en) 2005-11-07 2007-09-04 Samsung Sdi Co., Ltd. Manufacturing method for donor film with improved surface roughness

Similar Documents

Publication Publication Date Title
KR20000034508A (en) Device for controlling automatic gain control voltage of television receiver
MXPA04010502A (en) Method and apparatus for controlling a video signal processing apparatus to prevent screen aging.
US5929929A (en) Method for removing background noise during reception of weak electric field signals
KR0123078B1 (en) Circuit for decreasing noise signal when a television weak signal
KR200160088Y1 (en) Light control device of text letter
KR0171991B1 (en) Osd on time controlling apparatus depending on the audiovisual distance of tv receiver
KR20000021685A (en) Device and method for controlling luminance of led in television
KR200156319Y1 (en) Image control prohibition device in no signal channel
KR19980048136A (en) TV sound output conversion method
KR19990032563A (en) Television volume control device and method
KR20000040886A (en) Key lock apparatus for television
KR19980047368A (en) Television receiver with increase and decrease of volume level function
KR930010648B1 (en) Automatic sharpness adjusting circuit in low electric field density
KR19990025664A (en) A television that automatically compensates for the size of the sync signal in weak signals
KR19990031456A (en) Screen and voice control method when no signal or weak signal of TV
KR19980047358A (en) Input Signal Selection Method of TV with Input Signal Selection Function at Power-On
KR20000034507A (en) Device for displaying automatic gain control voltage of television receiver
KR20000003826A (en) Apparatus of treating background screen for television responding to abnormal receiving of broadcasting signal
KR20030014498A (en) Apparatus for controlling picture quality automatically according to AGC and method thereof
JPH06237394A (en) Electronic device
KR20000021578A (en) Method for controlling caption display on tv
KR20000042732A (en) Apparatus and method for controlling character information outputs of television
KR19990018800U (en) Text character brightness adjuster
KR19990025769A (en) Blue back screen stabilization display and control method in weak electric field.
KR19990043327A (en) Horizontal screen correction device through amplitude adjustment of television

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination