JPS6462975A - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
JPS6462975A
JPS6462975A JP62219670A JP21967087A JPS6462975A JP S6462975 A JPS6462975 A JP S6462975A JP 62219670 A JP62219670 A JP 62219670A JP 21967087 A JP21967087 A JP 21967087A JP S6462975 A JPS6462975 A JP S6462975A
Authority
JP
Japan
Prior art keywords
screen
automatic focusing
logic circuit
circuit part
intricacy
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
Application number
JP62219670A
Other languages
Japanese (ja)
Other versions
JP2659964B2 (en
Inventor
Kunihiko Yamada
Akihiro Fujiwara
Masamichi Toyama
Hiroshi Suda
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
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP62219670A priority Critical patent/JP2659964B2/en
Priority to GB8820363A priority patent/GB2209446B/en
Priority to DE3829733A priority patent/DE3829733A1/en
Priority to DE19883844873 priority patent/DE3844873C2/en
Priority to DE19883844874 priority patent/DE3844874C2/en
Publication of JPS6462975A publication Critical patent/JPS6462975A/en
Priority to GB9117963A priority patent/GB2247378B/en
Priority to US07/845,768 priority patent/US5164835A/en
Priority to GB9207063A priority patent/GB2251999B/en
Priority to US08/277,701 priority patent/US5422671A/en
Application granted granted Critical
Publication of JP2659964B2 publication Critical patent/JP2659964B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To effectively prevent a malfunction due to a camera blurring, a panning, etc., by controlling an automatic focusing action based on a value to normalize the detection result of the movement of a screen by means of the intricacy of the screen. CONSTITUTION:The output of an image pick-up element 2 is outputted through a preamplifier 3 and a process circuit 4, and simultaneously, inputted through a band-pass filter 5, a detecting circuit 6 and an A/D converter 24 to a logic circuit part 25. The logic circuit part 25 drives a motor 8 for driving a lens based on the value to normalize the detection result of the movement of the screen between frames by a memory 18 and a comparator 19 by means of data related to the intricacy of the whole screen by a comparator 22 and a counter 23, and the logic circuit part 25 controls the automatic focusing action.
JP62219670A 1987-09-02 1987-09-02 Automatic focusing device Expired - Fee Related JP2659964B2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP62219670A JP2659964B2 (en) 1987-09-02 1987-09-02 Automatic focusing device
GB8820363A GB2209446B (en) 1987-09-02 1988-08-26 Automatic focusing device
DE19883844873 DE3844873C2 (en) 1987-09-02 1988-09-01 Imaging device
DE19883844874 DE3844874C2 (en) 1987-09-02 1988-09-01 Automatic focusing device
DE3829733A DE3829733A1 (en) 1987-09-02 1988-09-01 AUTOMATIC FOCUSING DEVICE
GB9117963A GB2247378B (en) 1987-09-02 1991-08-20 Automatic focusing device
US07/845,768 US5164835A (en) 1987-09-02 1992-03-02 Automatic focusing device
GB9207063A GB2251999B (en) 1987-09-02 1992-03-31 Automatic focusing device
US08/277,701 US5422671A (en) 1987-09-02 1994-07-20 Automatic focus control by use of component value differences in an image sensing plane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62219670A JP2659964B2 (en) 1987-09-02 1987-09-02 Automatic focusing device

Publications (2)

Publication Number Publication Date
JPS6462975A true JPS6462975A (en) 1989-03-09
JP2659964B2 JP2659964B2 (en) 1997-09-30

Family

ID=16739136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62219670A Expired - Fee Related JP2659964B2 (en) 1987-09-02 1987-09-02 Automatic focusing device

Country Status (1)

Country Link
JP (1) JP2659964B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7616252B2 (en) 2005-04-15 2009-11-10 Sony Corporation Control apparatus, control method, computer program, and camera

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129878A (en) * 1982-01-27 1983-08-03 Hitachi Ltd Automatic focusing device
JPS58146183A (en) * 1982-02-24 1983-08-31 Sanyo Electric Co Ltd Automatic focusing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129878A (en) * 1982-01-27 1983-08-03 Hitachi Ltd Automatic focusing device
JPS58146183A (en) * 1982-02-24 1983-08-31 Sanyo Electric Co Ltd Automatic focusing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7616252B2 (en) 2005-04-15 2009-11-10 Sony Corporation Control apparatus, control method, computer program, and camera

Also Published As

Publication number Publication date
JP2659964B2 (en) 1997-09-30

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees