KR970024894A - Image signal processing circuit of television - Google Patents
Image signal processing circuit of television Download PDFInfo
- Publication number
- KR970024894A KR970024894A KR1019950037686A KR19950037686A KR970024894A KR 970024894 A KR970024894 A KR 970024894A KR 1019950037686 A KR1019950037686 A KR 1019950037686A KR 19950037686 A KR19950037686 A KR 19950037686A KR 970024894 A KR970024894 A KR 970024894A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- video signal
- composite video
- synchronization
- horizontal
- Prior art date
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- Television Systems (AREA)
Abstract
본 발명은 텔레비전의 영상신호처리회로에 관한 것으로, 복합영상신호에 포함된 동기신호를 검출하여 마이콤의 제어하에 CRT장치의 편향을 수행하여 영상신호와 음성신호를 재생하는 텔레비전에 있어서, 상기 마이콤으로부터 인가되는 제어신호에 의해 제어되어 상기 동기신호의 수평동기신호의 검출을 위한 신호를 발진하는 발진수단과, 그 발진신호를 수평동기신호의 주파수로 분주하는 수평동기분주회로, 상기 수평동기분주신호에 기초하여 상기 복합영상신호에 포함된 수평동기신호를 검출하는 동기검출수단, 상기 복합영상신호의 1-H지연을 위한 1-H지연수단, 상기 동기검출수단에 의해 검출된 수평동기신호의 레벨에 따라 상기 1-H지연된 복합영상신호 또는 현재의 복합영상신호를 스위칭하기 위한 스위칭수단, 그 스위칭수단의 스위칭제어에 의해 상기 현재의 복합영상신호와 상기 1-H지연 복합영상신호의 출력경로를 개폐하는 제1 및 제2스위치 및 그 제1또는 제2스위치에 의해 선택되어 출력되는 복합영상신호를 출력하는 영상신호출력수단을 구비하여 현재의 복합영상신호에서 검출되는 동기신호의 레벨이 약하거나 검출되지 않으면 상기 1-H지연된 복합영상신호를 출력하도록 된 것이다.The present invention relates to a video signal processing circuit of a television, comprising: detecting a synchronization signal included in a composite video signal and deflecting a CRT apparatus under the control of a microcomputer to reproduce the video and audio signals, Oscillating means controlled by an applied control signal to oscillate a signal for detecting a horizontal synchronizing signal of the synchronizing signal, a horizontal synchronizing frequency division circuit for dividing the oscillation signal at a frequency of a horizontal synchronizing signal, Synchronization detection means for detecting a horizontal synchronization signal included in the composite video signal based on the level of the horizontal synchronization signal detected by the synchronization detection means. Switching means for switching the 1-H delayed composite video signal or the current composite video signal; First and second switches for opening and closing output paths of the current composite video signal and the 1-H delayed composite video signal and a video signal for outputting a composite video signal selected and output by the first or second switch. If the level of the synchronization signal detected in the current composite video signal is weak or not detected, an output means is provided to output the 1-H delayed composite video signal.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명이 적용되는 텔레비전의 블록구성을 나타낸 도면.1 is a block diagram of a television to which the present invention is applied.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950037686A KR970024894A (en) | 1995-10-27 | 1995-10-27 | Image signal processing circuit of television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950037686A KR970024894A (en) | 1995-10-27 | 1995-10-27 | Image signal processing circuit of television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR970024894A true KR970024894A (en) | 1997-05-30 |
Family
ID=66584744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950037686A KR970024894A (en) | 1995-10-27 | 1995-10-27 | Image signal processing circuit of television |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970024894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100730006B1 (en) * | 1998-08-07 | 2007-06-20 | 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 | Control of horizontal frequency selection |
-
1995
- 1995-10-27 KR KR1019950037686A patent/KR970024894A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100730006B1 (en) * | 1998-08-07 | 2007-06-20 | 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 | Control of horizontal frequency selection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Withdrawal due to no request for examination |