KR940013175A - Automatic sub-adjustment method and device for TV - Google Patents

Automatic sub-adjustment method and device for TV Download PDF

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Publication number
KR940013175A
KR940013175A KR1019920021022A KR920021022A KR940013175A KR 940013175 A KR940013175 A KR 940013175A KR 1019920021022 A KR1019920021022 A KR 1019920021022A KR 920021022 A KR920021022 A KR 920021022A KR 940013175 A KR940013175 A KR 940013175A
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KR
South Korea
Prior art keywords
sub
screen
automatic fine
fine adjustment
mode
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Application number
KR1019920021022A
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Korean (ko)
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KR950006449B1 (en
Inventor
백운길
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이헌조
주식회사 금성사
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Priority to KR1019920021022A priority Critical patent/KR950006449B1/en
Publication of KR940013175A publication Critical patent/KR940013175A/en
Application granted granted Critical
Publication of KR950006449B1 publication Critical patent/KR950006449B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen

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

Abstract

본 발명은 텔레비젼의 부화면 온시나 부화면 채널 전환시 부화면 자체의 자동 미세 조정을 수행하도록하여 최적의 화질을 제공할 수 있는 텔레비젼의 부화면 자동 미세 조정 방법 및 장치에 관한 것으로 기존 회로에 OP 앰프로 구성된 자동 미세 조정 전압 검출부(11)와 저대역 필터를 이용한 동기 검출부(10)를 구비하고, 자동 미세 조정 전압의 기울기를 각 대역별로 나누어 제4도와 같은 프로그램을 여러번 실시하여 자동 미세 조정 전압을 찾는 방법을 제공하기 위한 것이다.The present invention relates to a method and apparatus for automatically adjusting sub-screens of a television that can provide an optimum picture quality by performing automatic fine-tuning of a sub-screen itself when the sub-screen is on or when switching sub-channels. An automatic fine adjustment voltage detection unit 11 composed of an amplifier and a synchronization detection unit 10 using a low band filter are provided, and the program of FIG. 4 is executed several times by dividing the slope of the automatic fine adjustment voltage for each band and performing the automatic fine adjustment voltage. To provide a way to find.

Description

텔레비젼의 부화면 자동 미세 조정 방법 및 장치Automatic sub-adjustment method and device for TV

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명의 부화면 자동 미세 조정을 실시하기 위한 블럭도,2 is a block diagram for performing sub-screen automatic fine adjustment of the present invention;

제3도는 본 발명의 자동 미세 조정 전압과 OP앰프의 출력 관계를 설명하기 위한 파형도 및 도표,3 is a waveform diagram and diagram for explaining the output relationship between the automatic fine adjustment voltage and the OP amplifier of the present invention,

제4도는 본 발명에 따른 플로우챠트.4 is a flowchart according to the present invention.

Claims (3)

부화면 동기 신호가 입력될때 서치 방향으로 모드를 판단하는 단계(S1,S2)와, 상기 서치 방향 모드가 최초 서치 모드일때 단자(a)의 입력 레벨을 판단하여 '하이'이면 서치 모드를 업으로 셋하고 PLL 데이타를 1 증가시켜 출력하고, '로우'이면 서치 모드를 다운으로 셋하고 PLL 데이타를 1 감소시켜 출력하는 단계(S3∼S7)와, 상기 서치 방향 모드가 서치 업 모드일 때 자동 미세 조정 범위를 초과하지 않았으면 단자(b)의 입력 레벨을 판단하여 '하이'이면 PLL 데이타를 1 증가시켜 출력하고 '로우'이면 PLL 데이타가 센터로 들어갈 수 있도록 PLL 데이타를 1 감소시켜 출력하고 자동 미세 조정을 완료하는 단계(S8∼S9)와, 상기 서치 방향 모드가 서치 다운 모드일때 자동 미세 조정 범위를 초과하지 않았으면 단자(a)의 입력 레벨을 판단하여 '하이'이면 PLL 데이타를 1 감소시켜 출력하고 '로우'이면 PLL 데이타가 센터로 들어갈 수 있도록 PLL 데이타를 1 증가시켜 출력하고 자동 미세 조정을 완료하는 단계(S11∼S14)를 포함하여 된 것을 특징으로 하는 텔레비젼의 부화면 자동 미세 조정 방법.Determining the mode in the search direction when the sub-screen synchronization signal is input (S 1 , S 2 ); and when the search direction mode is the first search mode, determining the input level of the terminal (a) to determine the search mode. Setting to up and increasing the PLL data by 1, and outputting by setting the search mode to down and decreasing the PLL data by 1 when the value is 'low' (S 3 to S 7 ), and the search direction mode is the search up mode. If the automatic fine adjustment range is not exceeded, the input level of the terminal (b) is judged. If it is 'high', the PLL data is increased by 1 and if it is 'low', the PLL data is decreased by 1 so that the PLL data can enter the center. (S 8 to S 9 ), and the input level of the terminal (a) is judged to be 'high' when the search direction mode does not exceed the automatic fine adjustment range when the search direction mode is in the search down mode. Back side PLL The television, characterized in that the including the step of outputting the first reduced to "low" if the PLL data is to increase the first PLL data so as to enter the center output and completes the automatic fine tuning (S 11 ~S 14) How to fine tune sub-screen automatically. 마이컴으로부터 PLL 데이타를 받아 튜닝된 신호를 출력하는 주화면 튜너(1) 및 부화면 튜너(8)와, 상기 주화면 및 부화면 튜너의 신호를 각각 받아 영상신호, 음성신호, 자동 미세 조정 신호를 분리시키는 주화면 IF 처리부(2) 및 부화면 IF 처리부(9)와, 상기 부화면 IF 처리부로부터 영상신호를 입력받아 부화면 신호를 출력시키는 부화면 처리부(5)와, 키 매트릭스(6)의 채널 선택키의 입력신호에 따라 자동 미세 조정을 실시하여 튜너와 크로마부를 제어하는 마이컴(7)과, 상기 부화면 IF 처리부와 마이컴 사이에 접속되어 부화면은 온시나 부화면 채널 전환시 부화면을 자동 미세 조정하기 위한 동기 검출부(10)와, 상기 주화면 IF 처리부와 부화면 처리부로부터 주화면과 부화면에 대한 영상 신호를 입력받고 마이컴의 제어를 받아 색 신호를 조합하여 CPT(3)를 통해 색 화상을 재현시키는 크로마부(4)와, 상기 부화면 IF 처리부로부터 자동 미세 전압을 검출하여 마이컴의 입력 단자(a)(b)로 입력시키는 부화면 자동 미세 조정 전압 검출부(11)를 포함하여 구성 된 것을 특징으로 하는 텔레비젼의 부화면 자동 미세 조정 장치.Receive the PLL data from the microcomputer and output the tuned signal and output the tuned signal, and the main screen tuner 1 and the sub-screen tuner 8, and the main and sub-screen tuners, respectively, to receive video signals, audio signals, and automatic fine adjustment signals. A main screen IF processor 2 and a sub-screen IF processor 9, a sub-screen processor 5 for receiving a video signal from the sub-screen IF processor and outputting a sub-screen signal, and a key matrix 6 The microcomputer 7 controls the tuner and the chroma unit by performing automatic fine adjustment according to the input signal of the channel selection key, and is connected between the sub-screen IF processing unit and the microcomputer, so that the sub-screen is displayed when the sub-screen is switched on or when the sub-channel channel is switched. Synchronization detection unit 10 for automatic fine adjustment, and the main screen IF processing unit and the sub-screen processing unit receives a video signal for the main screen and sub-screen and under the control of the microcomputer to combine the color signal through the CPT (3) A chroma unit 4 for reproducing a color image, and a sub-screen automatic fine adjustment voltage detector 11 for detecting an automatic fine voltage from the sub-screen IF processing unit and inputting it to the input terminals a) and b of the microcomputer. The sub-screen automatic fine tuning device of the TV, characterized in that consisting of. 제2항에 있어서, 부화면 자동 미세 조정전압 검출부(11)는 자동 미세 조정 전압을 3구간으로 구분하여 각 구간마다 하이 혹은 로우레벨을 출력하는 OP앰프(OP1)(OP3)를 포함하여 구성된 것을 특징으로 하는 텔레비젼의 부화면 자동 미세 조정 장치.The sub-screen automatic fine adjustment voltage detector 11 includes an OP amplifier OP 1 (OP 3 ) for dividing the automatic fine adjustment voltage into three sections and outputting a high or low level for each section. An apparatus for automatically adjusting sub-screens of televisions, characterized in that. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920021022A 1992-11-10 1992-11-10 Multi-tv sub-screen aft method & apparatus KR950006449B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920021022A KR950006449B1 (en) 1992-11-10 1992-11-10 Multi-tv sub-screen aft method & apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920021022A KR950006449B1 (en) 1992-11-10 1992-11-10 Multi-tv sub-screen aft method & apparatus

Publications (2)

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KR940013175A true KR940013175A (en) 1994-06-25
KR950006449B1 KR950006449B1 (en) 1995-06-15

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KR1019920021022A KR950006449B1 (en) 1992-11-10 1992-11-10 Multi-tv sub-screen aft method & apparatus

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KR950006449B1 (en) 1995-06-15

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