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JPS57208520A - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
JPS57208520A
JPS57208520AJP56093870AJP9387081AJPS57208520AJP S57208520 AJPS57208520 AJP S57208520AJP 56093870 AJP56093870 AJP 56093870AJP 9387081 AJP9387081 AJP 9387081AJP S57208520 AJPS57208520 AJP S57208520A
Authority
JP
Japan
Prior art keywords
circuit
hill
subject
variation
climbing
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
JP56093870A
Other languages
Japanese (ja)
Other versions
JPH0230486B2 (en
Inventor
Kaoru Yanagawa
Kentaro Hanma
Yoshihiro Todaka
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP56093870ApriorityCriticalpatent/JPS57208520A/en
Publication of JPS57208520ApublicationCriticalpatent/JPS57208520A/en
Publication of JPH0230486B2publicationCriticalpatent/JPH0230486B2/ja
Grantedlegal-statusCriticalCurrent

Links

Classifications

Landscapes

Abstract

PURPOSE:To prevent malfunction in hill-climbing operation due to the motion of a subject by detecting the variation in the subject in a video signal through a video camera, and stopping restarting the hill-climbing operation. CONSTITUTION:When a subject has no variation, the output of a camera circuit 2 is utilized and a motor driving circuit 7 and a motor 8 are operated by the output of a hill-climbing circuit 9 to move a lens 1, performing hill-climbing operation. When the subject has some variation, the variation is detected from the camera circuit 2 by a subject variation detecting circuit 10 and a gate circuit 11 disconnects the hill-climbing circuit 9 from the motor driving circuit 7, thereby interrupting the hill-climbing operation.
JP56093870A1981-06-191981-06-19Automatic focusing deviceGrantedJPS57208520A (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP56093870AJPS57208520A (en)1981-06-191981-06-19Automatic focusing device

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP56093870AJPS57208520A (en)1981-06-191981-06-19Automatic focusing device

Publications (2)

Publication NumberPublication Date
JPS57208520Atrue JPS57208520A (en)1982-12-21
JPH0230486B2 JPH0230486B2 (en)1990-07-06

Family

ID=14094487

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP56093870AGrantedJPS57208520A (en)1981-06-191981-06-19Automatic focusing device

Country Status (1)

CountryLink
JP (1)JPS57208520A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6069612A (en)*1983-09-271985-04-20Matsushita Electric Ind Co LtdAutomatic focus matching device
JPS63176072A (en)*1987-01-171988-07-20Victor Co Of Japan LtdAutomatic focusing system
JPS63197176A (en)*1987-02-121988-08-16Canon Inc automatic focus device
US5021731A (en)*1989-02-211991-06-04Metricor, Inc.Thermo-optical current sensor and thermo-optical current sensing systems
JPH03268585A (en)*1990-03-161991-11-29Sanyo Electric Co LtdAutomatic focusing device
US5185669A (en)*1990-10-011993-02-09Sony CorporationStill video camera with white balance and image pickup lens adjustment
JP2007264049A (en)*2006-03-272007-10-11Fujifilm Corp Imaging method and apparatus
WO2018096790A1 (en)*2016-11-282018-05-31オリンパス株式会社Imaging device, method for controlling imaging device, and recording medium storing focus adjustment program

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS55111925A (en)*1979-02-201980-08-29Ricoh Co LtdFocusing point signal generator
JPS5664324A (en)*1979-10-291981-06-01Canon IncFocusing state display system of automatic focus detector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS55111925A (en)*1979-02-201980-08-29Ricoh Co LtdFocusing point signal generator
JPS5664324A (en)*1979-10-291981-06-01Canon IncFocusing state display system of automatic focus detector

Cited By (9)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPS6069612A (en)*1983-09-271985-04-20Matsushita Electric Ind Co LtdAutomatic focus matching device
JPS63176072A (en)*1987-01-171988-07-20Victor Co Of Japan LtdAutomatic focusing system
JPS63197176A (en)*1987-02-121988-08-16Canon Inc automatic focus device
US5021731A (en)*1989-02-211991-06-04Metricor, Inc.Thermo-optical current sensor and thermo-optical current sensing systems
JPH03268585A (en)*1990-03-161991-11-29Sanyo Electric Co LtdAutomatic focusing device
US5185669A (en)*1990-10-011993-02-09Sony CorporationStill video camera with white balance and image pickup lens adjustment
JP2007264049A (en)*2006-03-272007-10-11Fujifilm Corp Imaging method and apparatus
WO2018096790A1 (en)*2016-11-282018-05-31オリンパス株式会社Imaging device, method for controlling imaging device, and recording medium storing focus adjustment program
US10841480B2 (en)2016-11-282020-11-17Olympus CorporationImaging device, control method of imaging device, and recording medium storing focus adjustment program

Also Published As

Publication numberPublication date
JPH0230486B2 (en)1990-07-06

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