KR970057400A - TV screen control device during channel switching - Google Patents

TV screen control device during channel switching Download PDF

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Publication number
KR970057400A
KR970057400A KR1019950054425A KR19950054425A KR970057400A KR 970057400 A KR970057400 A KR 970057400A KR 1019950054425 A KR1019950054425 A KR 1019950054425A KR 19950054425 A KR19950054425 A KR 19950054425A KR 970057400 A KR970057400 A KR 970057400A
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KR
South Korea
Prior art keywords
signal
video
digital
analog
screen
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KR1019950054425A
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Korean (ko)
Inventor
박주덕
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950054425A priority Critical patent/KR970057400A/en
Publication of KR970057400A publication Critical patent/KR970057400A/en

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Abstract

본 발명은 채널절환시 텔레비전의 호면제어장치에 관한 것으로서, 그 구성은 영상IF모듈(140로부터 영상동기신호를 검출하도록 하는 동기신호검출수단(26)과, 영상신호처리수단(18)으로부터 출력되는영상 아날로그신호를 디지털신호로 변환하는 아날로그/디지털변환수단(28), 상기 아날로그/디지털변환수단(280에 의해 디지털신호로 변환된 1화면분의 영상신호를 메모리하도록 하는 필드메모리수단(30), 상기 필드메모리수단(30)에 메모리되어 있는 1화면분의 디지털 영상신호를 아날로그 영상신호로 복원하여 영상출력수단(22)에 제공하여 주는 디지털/아날로그변환수단(32)및, 텔레비전의 전체기능을 총괄제어하고 상기 동기신호검출수단(26)으로 부터 제공되는 영상동기신호의 유,무(有,無)에 의거하여 상기 필드메모리수단(30)에 메모리되어 있는 1화면분의 영상시호의 출력 가부(可否)를 제어토록 하는 제어수단(34)을 포함하여 구성된 것을 특징으로 하여, 텔레비전의 채널을 무방송 채널로 절환하였을 시에 정확한 채널절환이 있을시까지 절환전(前) 채널의 마지막1화면분의 영상을 정지화면으로 텔레비전의 화면상에 표시하도록 함으로써, 무방송채널의 선국시 텔레비전화면에 나타나는 무방송 노이즈 현상을 방지하는 효과가 있다.The present invention relates to an apparatus for controlling a surface of a television at the time of channel switching, the configuration of which is output from the image signal processing means (18) and the synchronization signal detecting means (26) for detecting the image synchronization signal from the image IF module (140). An analog / digital converting means 28 for converting a video analog signal into a digital signal, a field memory means 30 for storing a video signal for one screen converted into a digital signal by the analog / digital converting means 280; Digital / analog converting means 32 for restoring one screen of digital video signal stored in the field memory means 30 to an analog video signal and providing it to the video output means 22; One screen stored in the field memory means 30 on the basis of overall control and the presence or absence of the image synchronization signal provided from the synchronization signal detection means 26. And control means (34) for controlling whether or not the output of the video signal is controlled, and the channel before switching until there is an accurate channel switching when the channel of the television is switched to a broadcast-free channel. By displaying the last one screen of the video on the television screen as a still picture, there is an effect of preventing the unbroadcast noise phenomenon appearing on the television screen when the broadcast channel is tuned.

Description

채널절환시 텔레비전의 화면제어장치TV screen control device during channel switching

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

제2도는 본 발명에 따른 채널절환시 텔레비전의 화면제어장치의 블럭구성도이다.2 is a block diagram of a screen control apparatus of a television when switching channels according to the present invention.

Claims (2)

튜너(10)에 의해 선국되는 방송신호에 포함된 영상신호를 처리하는 영상IF모듈(14)과 영상신호처리수단(18)및 영상출력수단(22)을 포함하는 영상신호처리통과 그 방송신호에 포함된 음성신호를 처리하는 음성IF모듈(12)과 음성신호처리수단(16)및 음성출력수단(20)을 포함하는 음성신호 처리계통을 갖추어 CRT및 스피커(SP)상에 영상/음성방송신호의 재생을 수행하는 텔레비전에 있어서, 사기 영상IF모듈(14)로부터 영상동기 신호를 검출하도록 하는 동기신호 검출수단(26)과, 상기 영상신호처리수단(18)으로부터 출력되는 영상아날로그신호를 디지털신호로 변환하는 아날로그/디지털변환수단(28), 상기 아날로그/디지털변환수단(28)에 의해 디지털신호로 변환된 1화면분의 영상신호를 메모리하도록 하는 필드메모리수단(30), 상기 필드메모리수단(30)에 메모리되어 있는 1화면분의 디지털 영상신호를 아날로그 영상신호로 복원하여 상기 영상출력수단(22)에 제공하여 주는 디지털/아날로그변환수단(32)및, 텔레비전의 전체기능을 총괄제어하고 상기 동기신호검출수단(26)으로부터 제공되는 영상 동기신호의 유,무(有,無)에 의거하여 상기 필드메모리수단(30)에 메모리되어 있는 1화면분의 영상신호의 출력 가부(可否)를 제어토록 하는 제어수단(34)을 포함하여 구성된 것을 특징으로 하는 채널절환시 텔레비전의 화면제어장치An image signal processing tube including an image IF module 14, an image signal processing means 18, and an image output means 22 for processing the image signal included in the broadcast signal tuned by the tuner 10, and the broadcast signal. It has a voice signal processing system including a voice IF module 12, a voice signal processing means 16, and a voice output means 20 for processing the included voice signal. In a television performing reproduction of the digital signal, the synchronization signal detecting means 26 for detecting the video synchronization signal from the fraudulent video IF module 14 and the video analog signal output from the video signal processing means 18 are digital signals. An analog / digital converting means 28 for converting a video signal into a field, a field memory means 30 for storing a video signal for one screen converted into a digital signal by the analog / digital converting means 28, and the field memory means ( 30) are in memory Digital / analog converting means 32 for restoring a digital video signal for one screen to an analog video signal and providing the same to the video output means 22; Control means for controlling whether output of a video signal for one screen stored in the field memory means 30 is controlled on the basis of the presence or absence of the video synchronization signal provided from (26); 34) a screen control device of a television at the time of channel switching characterized in that it comprises a 제1항에 있어서, 상기 필드메모리수단(30)은 1화면분의 영상신호를 기준단위로 하여 연속적으로 갱생메모리되도록 하는 것을 특징으로 하는 채널절환시 텔레비전의 화면제어장치.The apparatus of claim 1, wherein the field memory unit (30) is configured to continuously refresh the memory based on one video signal as a reference unit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950054425A 1995-12-22 1995-12-22 TV screen control device during channel switching KR970057400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950054425A KR970057400A (en) 1995-12-22 1995-12-22 TV screen control device during channel switching

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Application Number Priority Date Filing Date Title
KR1019950054425A KR970057400A (en) 1995-12-22 1995-12-22 TV screen control device during channel switching

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KR970057400A true KR970057400A (en) 1997-07-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100672393B1 (en) * 1999-08-19 2007-01-23 엘지전자 주식회사 Information Output Method of digital Broadcasting Receiver When Changed Channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100672393B1 (en) * 1999-08-19 2007-01-23 엘지전자 주식회사 Information Output Method of digital Broadcasting Receiver When Changed Channel

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