KR940017906A - VPT screen smear prevention device - Google Patents
VPT screen smear prevention device Download PDFInfo
- 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
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
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)
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) |
-
1992
- 1992-12-28 KR KR1019920025692A patent/KR940017906A/en not_active Application Discontinuation
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Date | Code | Title | Description |
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WITN | Withdrawal due to no request for examination |