KR940017906A - VPT screen smear prevention device - Google Patents

VPT screen smear prevention device Download PDF

Info

Publication number
KR940017906A
KR940017906A KR1019920025692A KR920025692A KR940017906A KR 940017906 A KR940017906 A KR 940017906A KR 1019920025692 A KR1019920025692 A KR 1019920025692A KR 920025692 A KR920025692 A KR 920025692A KR 940017906 A KR940017906 A KR 940017906A
Authority
KR
South Korea
Prior art keywords
signal
luminance
chroma
output
synchronizing
Prior art date
Application number
KR1019920025692A
Other languages
Korean (ko)
Inventor
김영길
Original Assignee
이헌조
주식회사 금성사
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 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019920025692A priority Critical patent/KR940017906A/en
Publication of KR940017906A publication Critical patent/KR940017906A/en

Links

Abstract

본 발명은 브이피티(Viedo Program by Teletext) 수신시 브이피티(Viedo Program by Teletext) 화면의 글자 번짐 방지장치에 관한 것으로, 특히 브이피티 수신시 화면의 색동기 신호를 기준으로 하여 엔코더의 색동기 신호를 위상동기시킴으로써 문자방송 글자 번짐을 방지할 수 있는 브이피티 화면의 글자 번짐 방지장치에 관한 것으로, 이와 같은 본 발명의 목적은 복합 영상신호에서 휘도신호를 일정 레벨로 조절하여 출력하는 휘도신호부(2a)와, 상기 휘도신호부(2a)로부터 출력된 휘도신호의 동기신호를 일정레벨 유지시켜 출력하는 제2 클램프(2b)와, 상기 제2 클램프(2b)로부터 출력된 휘도동기신호를 버퍼링하여 티브이로 출력하는 제2 버퍼(2c)와, 상기 휘도신호부(2a)로부터 분리된 색도신호를 처리하는 색도신호부(3a)와, 상기 색도신호부(3a)를 제어하는 색도신호 제어부(3c)와, 상기 색도신호 제어부(3c)로부터 출력된 색동기 신호를 기준으로 하여 브이피티 색동기 신호를 위상 동기시키는 위상동기 제어부(3b)를 구성함으로써 달성되어진다.The present invention relates to an apparatus for preventing smearing of a Viedo Program by Teletext screen when receiving a Viedo Program by Teletext, and in particular, a color synchronizing signal of an encoder based on a color synchronizing signal of a screen when receiving a VPT. The present invention relates to a device for preventing smudges of characters on a VPT screen by synchronizing a character broadcast character, and an object of the present invention is to adjust and output a luminance signal to a predetermined level in a composite video signal. 2a), a second clamp 2b for maintaining a constant level of the synchronization signal of the luminance signal output from the luminance signal unit 2a and outputting the buffer, and a luminance synchronization signal output from the second clamp 2b by buffering the A second buffer 2c output through a TV, a chroma signal unit 3a for processing the chroma signal separated from the luminance signal unit 2a, and a chroma signal unit for controlling the chroma signal unit 3a. This is achieved by configuring the fisherman 3c and the phase synchronization controller 3b for phase-synchronizing the VPTI color synchronizer signal on the basis of the color synchronizer signal output from the chromaticity signal controller 3c.

Description

브이피티(VPT) 화면의 글자 번짐 방지장치VPT screen smear prevention device

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

제2도는 본 발명 브이피티 화면 글자 번짐 방지장치의 블럭구성도. 제3도의 (가) 내지 (라)는 제3도의 각 부입출력 파형도.2 is a block diagram of the present invention VPT screen smear prevention device. (A) to (d) of FIG. 3 are each input / output waveform diagram of FIG.

Claims (1)

복합영상신호에서 휘도신호를 일정 레벨로 조절하여 출력하는 휘도신호 수단과, 상기 휘도신호 수단으로부터 출력된 휘도신호의 동기신호를 일정레벨 유지시켜 출력하는 제2 클램프와, 상기 제2 클램프로부터 출력된 휘도동기신호를 버퍼링하여 티브이로 출력하는 제2 버퍼와, 상기 휘도신호 수단으로부터 분리된 색도신호를 처리하는 색도신호 수단과, 상기 색도신호 수단을 제어하는 색도신호 제어수단과, 상기 색도신호 수단으로부터 출력된 색동기 신호를 기준으로 하여 브이피티 색동기 신호를 위상동기시키는 위상동기 제어수단을 포함하여 된 것을 특징으로 한 브이피티 화면의 글자 번짐 방지장치.A luminance signal means for adjusting and outputting the luminance signal to a predetermined level in the composite video signal, a second clamp for maintaining and outputting a synchronous signal of the luminance signal outputted from the luminance signal means, and outputting from the second clamp; A second buffer for buffering the luminance synchronization signal to the TV, a chroma signal means for processing the chroma signal separated from the luminance signal means, a chroma signal control means for controlling the chroma signal means, and the chroma signal means And a phase synchronization control means for phase-synchronizing the VP color sync signal based on the output color sync signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920025692A 1992-12-28 1992-12-28 VPT screen smear prevention device KR940017906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920025692A KR940017906A (en) 1992-12-28 1992-12-28 VPT screen smear prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920025692A KR940017906A (en) 1992-12-28 1992-12-28 VPT screen smear prevention device

Publications (1)

Publication Number Publication Date
KR940017906A true KR940017906A (en) 1994-07-27

Family

ID=67215097

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920025692A KR940017906A (en) 1992-12-28 1992-12-28 VPT screen smear prevention device

Country Status (1)

Country Link
KR (1) KR940017906A (en)

Similar Documents

Publication Publication Date Title
KR870006787A (en) Television receiver
KR930005445A (en) Video signal processing device
JP2582307B2 (en) Clamp circuit used with digital-to-analog converter
KR870011791A (en) Brightness Control Circuit for TV Receiver
KR900015539A (en) TV receiver
KR940027526A (en) Main screen position compensation device and method
KR940017906A (en) VPT screen smear prevention device
KR920017496A (en) Color display and color camera
KR850008086A (en) Beam current reduction device
KR950022965A (en) Character or title signal mixer circuit of video equipment
KR900001242A (en) TV receiver
KR930001677A (en) TV image display
KR940010714A (en) Analog screen art circuit
KR100205372B1 (en) On screen display apparatus
KR970057248A (en) OSD color control device according to the TV screen output
KR920014289A (en) Compression device for color control and processing time of chromaticity signal
KR930001756Y1 (en) Apparatus for adjusting brightness and color of on screen display characters automatically
KR920015937A (en) White balance automatic adjustment circuit and method
KR920004990Y1 (en) Color-automatic conversion circuit for on screen display character
KR970057400A (en) TV screen control device during channel switching
KR970057715A (en) Blanking part complementary color processing device for aspect ratio switching of television
KR970078463A (en) An image signal reception processing apparatus having a transient phenomenon prevention function
KR950026204A (en) Image Compensation Device for Character Broadcasting of TV Receiver
KR970050439A (en) Subtitle Processing Device of Image Processing System
KR950010555A (en) Caption signal automatic control device of TV receiver

Legal Events

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