JPS6234870U - - Google Patents
Info
- Publication number
- JPS6234870U JPS6234870U JP1985126141U JP12614185U JPS6234870U JP S6234870 U JPS6234870 U JP S6234870U JP 1985126141 U JP1985126141 U JP 1985126141U JP 12614185 U JP12614185 U JP 12614185U JP S6234870 U JPS6234870 U JP S6234870U
- Authority
- JP
- Japan
- Prior art keywords
- image signal
- horizontal scanning
- attenuating
- scanning image
- television camera
- 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
- 238000003384 imaging method Methods 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Closed-Circuit Television Systems (AREA)
Description
第１図ａは撮像画面を示す図、ｂはａのライン
Ａ―Ａ′に沿つた水平走査画像信号の波形図、ｃ
は背景画像信号の波形図、ｄは変換水平走査画像
信号の波形図、第２図は画像信号変換回路の回路
図である。
１……入力端子、２……レベル検出回路、３…
…ゲート回路、４……出力端子。
Figure 1a is a diagram showing the imaging screen, b is a waveform diagram of the horizontal scanning image signal along line A-A' in a, and c
d is a waveform diagram of a background image signal, d is a waveform diagram of a converted horizontal scanning image signal, and FIG. 2 is a circuit diagram of an image signal conversion circuit. 1...Input terminal, 2...Level detection circuit, 3...
...gate circuit, 4...output terminal.
Claims (1)
像画面のほぼ中央部分の水平走査画像信号の所定
のレベル以上の部分を検出するレベル検出手段と
、上記水平走査画像信号を入力し、上記レベル検
出回路からの信号により入力信号を減衰乃至カツ
トさせる手段とを具備し、該減衰乃至カツトさせ
る手段で得られる変換水平走査画像信号により上
記自動感度調整器を制御するようにしたことを特
徴とするテレビカメラ。 In a television camera equipped with an automatic sensitivity adjuster, a level detecting means detects a portion of a horizontal scanning image signal approximately at the center of an imaging screen that is at a predetermined level or higher; A television camera comprising means for attenuating or cutting an input signal using a signal from the above, and wherein the automatic sensitivity adjuster is controlled by a converted horizontal scanning image signal obtained by the attenuating or cutting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985126141U JPS6234870U (en) | 1985-08-20 | 1985-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985126141U JPS6234870U (en) | 1985-08-20 | 1985-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6234870U true JPS6234870U (en) | 1987-02-28 |
Family
ID=31019667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985126141U Pending JPS6234870U (en) | 1985-08-20 | 1985-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6234870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946787U (en) * | 1982-12-08 | 1984-03-28 | 本田技研工業株式会社 | Body structure of motorcycles, etc. |
| JPH02196586A (en) * | 1989-01-26 | 1990-08-03 | Matsushita Electric Ind Co Ltd | TV door phone device |
-
1985
- 1985-08-20 JP JP1985126141U patent/JPS6234870U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5946787U (en) * | 1982-12-08 | 1984-03-28 | 本田技研工業株式会社 | Body structure of motorcycles, etc. |
| JPH02196586A (en) * | 1989-01-26 | 1990-08-03 | Matsushita Electric Ind Co Ltd | TV door phone device |