DE69030345D1 - Automatisches Fokussierungsverfahren - Google Patents

Automatisches Fokussierungsverfahren

Info

Publication number
DE69030345D1
DE69030345D1 DE69030345T DE69030345T DE69030345D1 DE 69030345 D1 DE69030345 D1 DE 69030345D1 DE 69030345 T DE69030345 T DE 69030345T DE 69030345 T DE69030345 T DE 69030345T DE 69030345 D1 DE69030345 D1 DE 69030345D1
Authority
DE
Germany
Prior art keywords
automatic focusing
focusing process
automatic
focusing
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.)
Expired - Fee Related
Application number
DE69030345T
Other languages
English (en)
Other versions
DE69030345T2 (de
Inventor
Hideo Honma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP1233836A external-priority patent/JP2974338B2/ja
Priority claimed from JP1233835A external-priority patent/JP2974337B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69030345D1 publication Critical patent/DE69030345D1/de
Publication of DE69030345T2 publication Critical patent/DE69030345T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Automatic Focus Adjustment (AREA)
DE69030345T 1989-09-10 1990-09-06 Automatisches Fokussierungsverfahren Expired - Fee Related DE69030345T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1233836A JP2974338B2 (ja) 1989-09-10 1989-09-10 自動焦点調節装置
JP1233835A JP2974337B2 (ja) 1989-09-10 1989-09-10 自動焦点調節装置

Publications (2)

Publication Number Publication Date
DE69030345D1 true DE69030345D1 (de) 1997-05-07
DE69030345T2 DE69030345T2 (de) 1997-08-21

Family

ID=26531219

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69030345T Expired - Fee Related DE69030345T2 (de) 1989-09-10 1990-09-06 Automatisches Fokussierungsverfahren

Country Status (3)

Country Link
US (1) US5566380A (de)
EP (1) EP0417975B1 (de)
DE (1) DE69030345T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084754A (en) * 1989-09-20 1992-01-28 Sony Corporation Method and apparatus for effecting fuzzy control of an imaging device
DE69127112T2 (de) * 1990-02-28 1998-03-05 Sanyo Electric Co Automatisches Fokussierungsgerät zur automatischen Fokusanpassung in Abhängigkeit von Videosignalen
JP3791012B2 (ja) * 1996-01-11 2006-06-28 ソニー株式会社 フォーカス制御装置
JPH11258484A (ja) * 1998-03-09 1999-09-24 Sanyo Electric Co Ltd オートフォーカスカメラ
US20070081224A1 (en) * 2005-10-07 2007-04-12 Robinson M D Joint optics and image processing adjustment of electro-optic imaging systems
GB2466675B (en) * 2009-01-06 2013-03-06 Skype Speech coding
TWI454940B (zh) * 2011-01-28 2014-10-01 Univ Nat Taiwan Science Tech 用於自動對焦之模糊控制器的模糊歸屬函數的設計方法
US9225903B2 (en) * 2012-07-12 2015-12-29 Sony Corporation Image blur correction apparatus, method of correcting image blur, and imaging apparatus
CN109889721B (zh) * 2015-12-23 2021-01-29 北京奇虎科技有限公司 摄像头自动聚焦控制方法及装置
CN109660726B (zh) 2015-12-23 2021-03-05 北京奇虎科技有限公司 摄像头快速自动聚焦方法及装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651164A (en) * 1979-10-03 1981-05-08 Hitachi Ltd Automatic focusing device
WO1988004122A1 (en) * 1984-02-21 1988-06-02 Hiroshi Makino Automatic focusing device
FR2580088B1 (de) * 1985-04-05 1987-05-15 Trt Telecom Radio Electr
US4762986A (en) * 1986-03-10 1988-08-09 Canon Kabushiki Kaisha Automatic focussing system including in-focus position prediction means
JPH0813097B2 (ja) * 1986-10-08 1996-02-07 キヤノン株式会社 合焦検出装置
US4841370A (en) * 1986-11-17 1989-06-20 Sanyo Electric Co., Ltd. Automatic focusing circuit for automatically matching focus in response to video signal
JPH0644806B2 (ja) * 1987-02-18 1994-06-08 三洋電機株式会社 オ−トフオ−カス回路
US4922346A (en) * 1987-06-30 1990-05-01 Sanyo Electric Co., Ltd. Automatic focusing apparatus having a variable focusing speed and particularly suited for use with interlaced scanning
US4833541A (en) * 1987-09-07 1989-05-23 Sanyo Electric Co., Ltd. Image sensing apparatus having function of automatically matching focus and exposure in response to video signal
JPH01216850A (ja) * 1988-02-25 1989-08-30 Minolta Camera Co Ltd 作像装置
US5025499A (en) * 1988-04-13 1991-06-18 Hitachi, Ltd. Process control method and control system
US5121151A (en) * 1988-04-28 1992-06-09 Canon Kabushiki Kaisha Focus adjustment information forming device
JP2644530B2 (ja) * 1988-06-01 1997-08-25 キヤノン株式会社 レンズ位置制御装置
US5083150A (en) * 1989-03-03 1992-01-21 Olympus Optical Co., Ltd. Automatic focusing apparatus
US5057859A (en) * 1990-11-23 1991-10-15 Olympus Optical Co., Ltd. Camera having high-precision stop function for movable unit

Also Published As

Publication number Publication date
EP0417975A2 (de) 1991-03-20
US5566380A (en) 1996-10-15
EP0417975A3 (en) 1992-01-08
DE69030345T2 (de) 1997-08-21
EP0417975B1 (de) 1997-04-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee