JPS6333256U - - Google Patents
Info
- Publication number
- JPS6333256U JPS6333256U JP12582586U JP12582586U JPS6333256U JP S6333256 U JPS6333256 U JP S6333256U JP 12582586 U JP12582586 U JP 12582586U JP 12582586 U JP12582586 U JP 12582586U JP S6333256 U JPS6333256 U JP S6333256U
- Authority
- JP
- Japan
- Prior art keywords
- level
- video signal
- predetermined
- maximum value
- compresses
- 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
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Description
第３図及び第２図はそれぞれ従来の映像信号処
理回路のブロツク図と各部の信号波形図、第１図
及び第４図は本考案の映像信号処理回路のブロツ
ク図と各部の信号波形図である。
１：レベル圧縮回路、２：黒レベルシフト回路
、３：増幅回路、４：白レベルクリツプ回路、５
：最大値検出保持回路。
Figures 3 and 2 are a block diagram and signal waveform diagrams of various parts of a conventional video signal processing circuit, respectively, and Figures 1 and 4 are a block diagram of a video signal processing circuit of the present invention and signal waveform diagrams of various parts. be. 1: Level compression circuit, 2: Black level shift circuit, 3: Amplification circuit, 4: White level clip circuit, 5
: Maximum value detection holding circuit.
Claims (1)
レベル圧縮した映像信号の黒レベルを適宜レベル
シフト後、該映像信号の所定白レベルをクリツプ
する映像信号処理回路を持つテレビジヨンカメラ
装置において、上記白レベルクリツプ直前の映像
信号の最大値を検出し、この最大値に基づいて上
記所定レベル以上の映像信号をレベル圧縮するレ
ベル圧縮回路の圧縮率を制御する手段を有するこ
とを特徴とするテレビジヨンカメラ装置。 In a television camera device having a video signal processing circuit that level-compresses a video signal of a predetermined level or higher, shifts the black level of the level-compressed video signal as appropriate, and then clips a predetermined white level of the video signal. A television camera characterized by having means for detecting the maximum value of the video signal immediately before level clipping, and controlling the compression ratio of a level compression circuit that level-compresses the video signal of the predetermined level or higher based on this maximum value. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12582586U JPS6333256U (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12582586U JPS6333256U (en) | 1986-08-20 | 1986-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333256U true JPS6333256U (en) | 1988-03-03 |
Family
ID=31019060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12582586U Pending JPS6333256U (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333256U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126469A (en) * | 1990-09-18 | 1992-04-27 | Ikegami Tsushinki Co Ltd | Video signal compression circuit |
-
1986
- 1986-08-20 JP JP12582586U patent/JPS6333256U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04126469A (en) * | 1990-09-18 | 1992-04-27 | Ikegami Tsushinki Co Ltd | Video signal compression circuit |
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