JPS62164461U - - Google Patents
Info
- Publication number
- JPS62164461U JPS62164461U JP5292186U JP5292186U JPS62164461U JP S62164461 U JPS62164461 U JP S62164461U JP 5292186 U JP5292186 U JP 5292186U JP 5292186 U JP5292186 U JP 5292186U JP S62164461 U JPS62164461 U JP S62164461U
- Authority
- JP
- Japan
- Prior art keywords
- detecting
- focusing direction
- detecting means
- level
- maximum value
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 238000003384 imaging method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例の概略構成図、第２
図は第１図のフオーカスレンズと撮像素子との位
置関係を示す側面図、第３図は撮像面を示す図、
第４図は映像信号を示す波形図、第５図は第１図
の動作説明に供するフローチヤートである。
２…撮像素子、３…駆動手段、７，８…第１、
第２レベル検出手段、９…合焦方向検知手段、１
０…最大値検出手段、１１…フオーカスモータ、
Ａ…撮像面。
Figure 1 is a schematic diagram of an embodiment of the present invention;
The figure is a side view showing the positional relationship between the focus lens and the image sensor in Fig. 1, and Fig. 3 is a view showing the imaging surface.
FIG. 4 is a waveform diagram showing a video signal, and FIG. 5 is a flow chart for explaining the operation of FIG. 2...imaging element, 3...driving means, 7, 8...first,
Second level detection means, 9... Focusing direction detection means, 1
0... Maximum value detection means, 11... Focus motor,
A...Imaging surface.
Claims (1)
直な軸線回りに角変位させる駆動手段と、 前記撮像素子からの映像信号の内、撮像面の前
記軸線を境界とする両側の２つの第１、第２水平
走査線に対応する映像信号の高周波成分のレベル
をそれぞれ検出する第１、第２レベル検出手段と
、 前記角変位の前後における前記両レベル検出手
段の検出レベルの変化に基づいて合焦方向を検知
する合焦方向検知手段と、 前記両レベル検出手段の検出レベルの最大値を
検出する最大値検出手段とを備え、 前記合焦方向検知手段および最大値検出手段の
出力に基づいてフオーカスモータの駆動制御を行
なうことを特徴とするビデオカメラのオートフオ
ーカス機構。[Claims for Utility Model Registration] Driving means for angularly displacing the imaging surface of an imaging device around an axis perpendicular to the optical axis of a lens system; first and second level detection means for respectively detecting the levels of high frequency components of video signals corresponding to two first and second horizontal scanning lines on both sides of the boundary; and both level detection means before and after the angular displacement. a focusing direction detecting means for detecting a focusing direction based on a change in a detection level of the focusing direction detecting means; and a maximum value detecting means for detecting a maximum value of the detection levels of both the level detecting means, the focusing direction detecting means and An autofocus mechanism for a video camera, characterized in that drive control of a focus motor is performed based on the output of a maximum value detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5292186U JPH055729Y2 (en) | 1986-04-09 | 1986-04-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5292186U JPH055729Y2 (en) | 1986-04-09 | 1986-04-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62164461U true JPS62164461U (en) | 1987-10-19 |
| JPH055729Y2 JPH055729Y2 (en) | 1993-02-15 |
Family
ID=30878515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5292186U Expired - Lifetime JPH055729Y2 (en) | 1986-04-09 | 1986-04-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH055729Y2 (en) |
-
1986
- 1986-04-09 JP JP5292186U patent/JPH055729Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH055729Y2 (en) | 1993-02-15 |
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