JPS6449484A - Automatic focus video camera - Google Patents
Automatic focus video cameraInfo
- Publication number
- JPS6449484A JPS6449484A JP62206776A JP20677687A JPS6449484A JP S6449484 A JPS6449484 A JP S6449484A JP 62206776 A JP62206776 A JP 62206776A JP 20677687 A JP20677687 A JP 20677687A JP S6449484 A JPS6449484 A JP S6449484A
- Authority
- JP
- Japan
- Prior art keywords
- subject
- areas
- focusing
- fluctuation
- focus
- 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
Landscapes
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Abstract
PURPOSE:To reduce an unnecessary automatic focusing action and to obtain an easy-to-see screen by detecting the movement of a subject based on the fluctuation of a focus evaluation value in plural sampling areas, and changing a focusing area according to the movement of the subject. CONSTITUTION:For example, a black subject 13 is in a position A before a white wall 14, and a focusing is executed. A fluctuation supervising circuit 11 selects four of sampling areas Sa9-Sa12 as the focusing areas so that the subject can go to an area center, and the focusing action is executed by using the sum of focus evaluation values L9-L12. Next, when the subject 13 is moved in a right direction facing a camera 15 and goes to a position B, a circuit 11 decides, from the fluctuation of the distribution pattern of the focus evalua tion values, that the subject is moved from the areas Sa10 and S11 to areas Sa8 and Sa9, simultaneously, a selecting circuit 12 selects areas Sa7-Sa10, and the automatic focusing action is executed based on the sum of focus evalua tion values L7-L10. In such a way, the unnecessary automatic focusing action can be reduced, and the easy-to-watch screen can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206776A JPS6449484A (en) | 1987-08-20 | 1987-08-20 | Automatic focus video camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62206776A JPS6449484A (en) | 1987-08-20 | 1987-08-20 | Automatic focus video camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6449484A true JPS6449484A (en) | 1989-02-23 |
Family
ID=16528897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62206776A Pending JPS6449484A (en) | 1987-08-20 | 1987-08-20 | Automatic focus video camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449484A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04111684A (en) * | 1990-08-31 | 1992-04-13 | Victor Co Of Japan Ltd | Automatic focus image pickup device |
US5210566A (en) * | 1990-04-19 | 1993-05-11 | Mitsubishi Denki Kabushiki | Photographic optical system controlling apparatus |
JP2003101857A (en) * | 2001-09-19 | 2003-04-04 | Sony Corp | Image pickup device |
JP2007052349A (en) * | 2005-08-19 | 2007-03-01 | Toshiba Corp | Imaging apparatus |
-
1987
- 1987-08-20 JP JP62206776A patent/JPS6449484A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5210566A (en) * | 1990-04-19 | 1993-05-11 | Mitsubishi Denki Kabushiki | Photographic optical system controlling apparatus |
JPH04111684A (en) * | 1990-08-31 | 1992-04-13 | Victor Co Of Japan Ltd | Automatic focus image pickup device |
JP2003101857A (en) * | 2001-09-19 | 2003-04-04 | Sony Corp | Image pickup device |
JP2007052349A (en) * | 2005-08-19 | 2007-03-01 | Toshiba Corp | Imaging apparatus |
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