JPS56106478A - Automatic focusing device - Google Patents
Automatic focusing deviceInfo
- Publication number
- JPS56106478A JPS56106478A JP781880A JP781880A JPS56106478A JP S56106478 A JPS56106478 A JP S56106478A JP 781880 A JP781880 A JP 781880A JP 781880 A JP781880 A JP 781880A JP S56106478 A JPS56106478 A JP S56106478A
- Authority
- JP
- Japan
- Prior art keywords
- range component
- amplitude difference
- numerator
- denominator
- divider
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP781880A JPS56106478A (en) | 1980-01-28 | 1980-01-28 | Automatic focusing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP781880A JPS56106478A (en) | 1980-01-28 | 1980-01-28 | Automatic focusing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56106478A true JPS56106478A (en) | 1981-08-24 |
Family
ID=11676165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP781880A Pending JPS56106478A (en) | 1980-01-28 | 1980-01-28 | Automatic focusing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56106478A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0297587A2 (en) * | 1987-06-30 | 1989-01-04 | Sanyo Electric Co., Ltd. | Automatic focusing apparatus for automatically matching focus in response to video signal |
US5534923A (en) * | 1992-06-11 | 1996-07-09 | Canon Kabushiki Kaisha | Video camera apparatus |
-
1980
- 1980-01-28 JP JP781880A patent/JPS56106478A/ja active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0297587A2 (en) * | 1987-06-30 | 1989-01-04 | Sanyo Electric Co., Ltd. | Automatic focusing apparatus for automatically matching focus in response to video signal |
US5534923A (en) * | 1992-06-11 | 1996-07-09 | Canon Kabushiki Kaisha | Video camera apparatus |
EP0573986B1 (en) * | 1992-06-11 | 1997-09-24 | Canon Kabushiki Kaisha | Auto focusing device for video camera |
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