KR960016480A - Channel automatic switching method using color killer signal - Google Patents

Channel automatic switching method using color killer signal Download PDF

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Publication number
KR960016480A
KR960016480A KR1019940027595A KR19940027595A KR960016480A KR 960016480 A KR960016480 A KR 960016480A KR 1019940027595 A KR1019940027595 A KR 1019940027595A KR 19940027595 A KR19940027595 A KR 19940027595A KR 960016480 A KR960016480 A KR 960016480A
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KR
South Korea
Prior art keywords
channel
signal
color killer
color
local oscillation
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KR1019940027595A
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Korean (ko)
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KR0127530B1 (en
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이현철
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배순훈
대우전자 주식회사
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Priority to KR1019940027595A priority Critical patent/KR0127530B1/en
Publication of KR960016480A publication Critical patent/KR960016480A/en
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Publication of KR0127530B1 publication Critical patent/KR0127530B1/en

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    • 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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/02—Diagnosis, testing or measuring for television systems or their details for colour television signals

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

본 발명은 컬러킬러신호를 이용한 채널자동절환방법에 관한 것으로, 채널선국입력에 따라 해당채널의 국부발진주파수를 기준으로 선택된 채널에서 동기신호의 유·무에 따라 그 최초의 국부발진주파수에 의한 선국작업의 종료 또는 동기신호의 검출시 윈도우서치작업으로 이행하여 최적의 국부발진주파수에 의한 선국작업을 행하는 컬러텔레비전에 있어서, 상기 동기신호의 검출시에 수행되는 윈도우서치 동작후에 선국된 채널에서 컬러신호의 유·무를 검출하여 그 컬러킬러신호가 존재하는 채널을 선국하여 목표로 하는 채널로의 절환이 이루어지도록 하고, 상기 컬러킬러신호의 유·무 판별시 컬러킬러신호가 존재하면 상기 최적의 국부발진주파수에 의한 채널 선국을 실행하고, 상기 컬러킬러신호의 비존재시에는 그 채널에 후술하는 채널에 대한 선국데이타를 기초로 컬러킬러신호의 존재하는 채널로의 절환이 이루어지도록 하여 정확한 채널의 탐색과 절환 그 채널의 화면표시가 가능하도록 된 것이다.The present invention relates to a channel automatic switching method using a color killer signal, wherein the channel is selected by the first local oscillation frequency according to the presence or absence of a synchronization signal in a channel selected based on the local oscillation frequency of the corresponding channel according to the channel tuning input. In a color television which shifts to a window search operation upon completion of a job or a synchronization signal is detected and performs a tuning operation by an optimal local oscillation frequency, the color signal in the channel tuned after the window search operation performed at the detection of the synchronization signal. Detects the presence or absence of a color killer signal, selects a channel where the color killer signal exists, and switches to a target channel. When the color killer signal is present, the optimal local oscillation is performed. Channel tuning by frequency is performed. When the color killer signal is not present, the channel to be described later is assigned to the channel. So that the switching of the channel to present a color killer signal on the basis of the channel selection made by the data to which the display of the browsing and switching the channel of the channel available to correct.

Description

컬러킬러신호를 이용한 채널자동절환방법Channel automatic switching method using color killer signal

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

제1도는 본 발명에 따른 컬러킬러신호를 이용한 채널자동절환방법을 실행하는 텔레비전의 선국계통을 나타낸 블럭구성도.1 is a block diagram showing a channel selection system of a television executing a channel automatic switching method using a color killer signal according to the present invention.

Claims (2)

채널선국입력에 따라 해당채널의 국부발진주파수를 기준으로 선택된 채널에서 동기신호의 유·무에 따라 그 최초의 국부발진주파수에 의한 선국작업의 종료 또는 동기신호의 검출시 윈도우서치작업으로 이행하여 최적의 국부발진주파수에 의한 선국작업을 행하는 컬러텔레비전에 있어서, 상기 동기신호의 검출시에 수행되는 윈도우서치 동작후에 선국된 채널에서 컬러신호의 유·무를 검출하여 그 컬러킬러신호가 존재하는 채널을 선국하여 목표로 하는 채널로의 절환 및 해당 채널의 화면표시가 이루어지도록 한 것을 특징으로 하는 컬러킬러신호를 이용한 채널자동절환방법.Depending on the presence or absence of a synchronization signal in the channel selected based on the local oscillation frequency of the corresponding channel according to the channel tuning input, it is optimized by the end of the tuning operation by the first local oscillation frequency or by the window search operation when the synchronization signal is detected. In color television which performs the tuning operation by the local oscillation frequency, the color channel is detected in the channel selected after the window search operation performed at the time of detecting the synchronization signal, and the channel in which the color killer signal exists is selected. A channel automatic switching method using a color killer signal, characterized in that the switching to the target channel and the screen display of the channel. 제1항 있어서, 상기 컬필터신호의 유·무 판별시 컬러킬러신호가 존재하면 상기 최적의 국부발진주파수에 의한 채널 선국을 실행하고, 상기 컬러킬러신호의 비존재시에는 그 채널에 후술하는 채널에 대한 선국데이타를 기초로 컬러킬러신호가 존재하는 채널로의 절환이 이루어지는 것을 특징으로 하는 컬러킬러신호를 이용한 채널자동절환방법.2. The method of claim 1, wherein if a color killer signal is present at the time of discriminating the curl filter signal, channel selection is performed according to the optimal local oscillation frequency, and if a color killer signal is not present, a channel to be described later. A channel automatic switching method using a color killer signal, characterized in that the switching to the channel in which the color killer signal is present based on the channel selection data. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940027595A 1994-10-27 1994-10-27 Automatic channel switching method using color-killer signal KR0127530B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940027595A KR0127530B1 (en) 1994-10-27 1994-10-27 Automatic channel switching method using color-killer signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940027595A KR0127530B1 (en) 1994-10-27 1994-10-27 Automatic channel switching method using color-killer signal

Publications (2)

Publication Number Publication Date
KR960016480A true KR960016480A (en) 1996-05-22
KR0127530B1 KR0127530B1 (en) 1997-12-29

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Application Number Title Priority Date Filing Date
KR1019940027595A KR0127530B1 (en) 1994-10-27 1994-10-27 Automatic channel switching method using color-killer signal

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KR0127530B1 (en) 1997-12-29

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