JPS6471382A - Automatic focusing device - Google Patents
Automatic focusing deviceInfo
- Publication number
- JPS6471382A JPS6471382A JP62228147A JP22814787A JPS6471382A JP S6471382 A JPS6471382 A JP S6471382A JP 62228147 A JP62228147 A JP 62228147A JP 22814787 A JP22814787 A JP 22814787A JP S6471382 A JPS6471382 A JP S6471382A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- gate
- video signal
- pulse
- gate pulse
- 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
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE:To continuously focus a main object, by moving a focus detecting area an object position on a photographing screen. CONSTITUTION:When a video signal is inputted from an image pickup element 2 to a gate circuit 11, the circuit 11 obtains the video signal in a designated area in one field conforming to a gate pulse from a gate pulse generator 55. A selector 48 detects position information corresponding to the information instructed by a maximum value detecting circuit 46, and outputs it to an FF 49. The pulse information is also sent to a gate pulse generating circuit 54. A gate circuit 10 makes the pulse information pass through the designated are in one field conforming to the gate pulse from the circuit 54, a detecting circuit 7 detects the video signal, holds the peak value of the absolute value signal of a luminance component in the area, and the motor driving circuit 8 drives a motor 9 in accordance with the peak value. Thus, a lens 1 is automatically controlled to a focusing condition.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62228147A JP2663451B2 (en) | 1987-09-11 | 1987-09-11 | Automatic focusing device |
DE3830794A DE3830794C2 (en) | 1987-09-11 | 1988-09-09 | Automatic focusing device |
GB8821241A GB2209901B (en) | 1987-09-11 | 1988-09-09 | Image sensing device |
DE3844876A DE3844876C2 (en) | 1987-09-11 | 1988-09-09 | Device for automatic tracking of a measuring range |
DE3844877A DE3844877C2 (en) | 1987-09-11 | 1988-09-09 | Device for automatic adjustment of the measuring range size |
US07/634,329 US5128768A (en) | 1987-09-11 | 1990-12-26 | Automatic focusing device having a settable focus detection area |
US08/823,607 US6088060A (en) | 1987-09-11 | 1997-03-25 | Automatic focusing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62228147A JP2663451B2 (en) | 1987-09-11 | 1987-09-11 | Automatic focusing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6471382A true JPS6471382A (en) | 1989-03-16 |
JP2663451B2 JP2663451B2 (en) | 1997-10-15 |
Family
ID=16871965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62228147A Expired - Fee Related JP2663451B2 (en) | 1987-09-11 | 1987-09-11 | Automatic focusing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2663451B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454354A2 (en) * | 1990-04-19 | 1991-10-30 | Mitsubishi Denki Kabushiki Kaisha | Photographic optical system controlling apparatus |
JPH06253200A (en) * | 1993-02-25 | 1994-09-09 | Fujitsu Ltd | Automatic focus adjustment system for infrared ray camera |
JP2006129272A (en) * | 2004-10-29 | 2006-05-18 | Olympus Corp | Camera, tracking apparatus, tracking method, and tracking program |
JP2007011054A (en) * | 2005-06-30 | 2007-01-18 | Canon Inc | Imaging apparatus, control method for imaging apparatus and computer program |
JP2007225808A (en) * | 2006-02-22 | 2007-09-06 | Pentax Corp | Autofocus unit and digital camera |
US7660518B2 (en) | 2005-07-21 | 2010-02-09 | Fujinon Corporation | Automatic focusing apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60256113A (en) * | 1984-05-31 | 1985-12-17 | Canon Inc | Automatic tracking device of camera |
-
1987
- 1987-09-11 JP JP62228147A patent/JP2663451B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60256113A (en) * | 1984-05-31 | 1985-12-17 | Canon Inc | Automatic tracking device of camera |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0454354A2 (en) * | 1990-04-19 | 1991-10-30 | Mitsubishi Denki Kabushiki Kaisha | Photographic optical system controlling apparatus |
EP0454354A3 (en) * | 1990-04-19 | 1992-07-01 | Mitsubishi Denki Kabushiki Kaisha | Photographic optical system controlling apparatus |
JPH06253200A (en) * | 1993-02-25 | 1994-09-09 | Fujitsu Ltd | Automatic focus adjustment system for infrared ray camera |
JP2006129272A (en) * | 2004-10-29 | 2006-05-18 | Olympus Corp | Camera, tracking apparatus, tracking method, and tracking program |
JP2007011054A (en) * | 2005-06-30 | 2007-01-18 | Canon Inc | Imaging apparatus, control method for imaging apparatus and computer program |
US7660518B2 (en) | 2005-07-21 | 2010-02-09 | Fujinon Corporation | Automatic focusing apparatus |
JP2007225808A (en) * | 2006-02-22 | 2007-09-06 | Pentax Corp | Autofocus unit and digital camera |
Also Published As
Publication number | Publication date |
---|---|
JP2663451B2 (en) | 1997-10-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |