JPS63152363U - - Google Patents
Info
- Publication number
- JPS63152363U JPS63152363U JP4490587U JP4490587U JPS63152363U JP S63152363 U JPS63152363 U JP S63152363U JP 4490587 U JP4490587 U JP 4490587U JP 4490587 U JP4490587 U JP 4490587U JP S63152363 U JPS63152363 U JP S63152363U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video signal
- correction
- circuit
- level detection
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図はこの考案の一実施例を示す図、第２図
ａ，ｂはこの考案を説明するための映像信号波形
図、第３図は従来の映像信号補正回路を示す図、
第４図ａ，ｂは従来の構成により映像信号波形図
である。
１……入力端子、２……加算回路、３……補正
信号抽出回路、４……入力端子、５……スイツチ
ング手段、６……信号レベル検出回路。
FIG. 1 is a diagram showing an embodiment of this invention, FIGS. 2 a and b are video signal waveform diagrams for explaining this invention, and FIG. 3 is a diagram showing a conventional video signal correction circuit.
FIGS. 4a and 4b are video signal waveform diagrams according to the conventional configuration. DESCRIPTION OF SYMBOLS 1...Input terminal, 2...Addition circuit, 3...Correction signal extraction circuit, 4...Input terminal, 5...Switching means, 6...Signal level detection circuit.
Claims (1)
により映像信号から補正信号を取出し、この補正
信号を前記映像信号に加算（または減算）する映
像信号補正回路において、 前記映像信号のレベルを判別する信号レベル検
出回路と、前記信号レベル検出回路の出力により
前記補正信号を前記映像信号に加算（または減算
）しないスイツチング手段とを備えて構成したこ
とを特徴とする映像信号補正回路。[Claims for Utility Model Registration] A video signal correction circuit that extracts a correction signal from a video signal by a correction signal extraction circuit connected to a video signal transmission line, and adds (or subtracts) this correction signal to the video signal, comprising: A video signal comprising: a signal level detection circuit that determines the level of a video signal; and switching means that does not add (or subtract) the correction signal to the video signal based on the output of the signal level detection circuit. correction circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4490587U JPS63152363U (en) | 1987-03-25 | 1987-03-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4490587U JPS63152363U (en) | 1987-03-25 | 1987-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63152363U true JPS63152363U (en) | 1988-10-06 |
Family
ID=30863156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4490587U Pending JPS63152363U (en) | 1987-03-25 | 1987-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63152363U (en) |
-
1987
- 1987-03-25 JP JP4490587U patent/JPS63152363U/ja active Pending
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