JPS575018A - Focus controller - Google Patents

Focus controller

Info

Publication number
JPS575018A
JPS575018A JP7974180A JP7974180A JPS575018A JP S575018 A JPS575018 A JP S575018A JP 7974180 A JP7974180 A JP 7974180A JP 7974180 A JP7974180 A JP 7974180A JP S575018 A JPS575018 A JP S575018A
Authority
JP
Japan
Prior art keywords
signal
inputted
video signal
high frequency
frequency components
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
JP7974180A
Other languages
Japanese (ja)
Other versions
JPH0146845B2 (en
Inventor
Kenji Kimura
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.)
Olympus Corp
Original Assignee
Olympus Optical Co 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP7974180A priority Critical patent/JPS575018A/en
Publication of JPS575018A publication Critical patent/JPS575018A/en
Publication of JPH0146845B2 publication Critical patent/JPH0146845B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)

Abstract

PURPOSE:To automatically adjust focus by performing servocontrol by setting the point where the level of the high frequency components of a video signal is an extremal value, as a reference point. CONSTITUTION:The optical information imaged on the target surface 141 of an image pickup element 14 is converted to a video signal E24 by a video processing circuit 52. The 1st means 64 inputted with the video signal E24 takes out the high frequency components thereof and outputs a level signal E34 of said components. The signal E34 is inputted to the 2nd means 70, by which the deviation of the signal E34 from the best focus position where it is an extremal value is detected and this detected value is inputted to the 3rd means 96. The output signal E12 of the 3rd detecting means is the control target of a servoloop consisting of a potentiometer 36 detecting the relative positions of the lens system and the target surface, a subtractor 38, an amplifier 42 and a motor 32.
JP7974180A 1980-06-13 1980-06-13 Focus controller Granted JPS575018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7974180A JPS575018A (en) 1980-06-13 1980-06-13 Focus controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7974180A JPS575018A (en) 1980-06-13 1980-06-13 Focus controller

Publications (2)

Publication Number Publication Date
JPS575018A true JPS575018A (en) 1982-01-11
JPH0146845B2 JPH0146845B2 (en) 1989-10-11

Family

ID=13698637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7974180A Granted JPS575018A (en) 1980-06-13 1980-06-13 Focus controller

Country Status (1)

Country Link
JP (1) JPS575018A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609059A (en) * 1983-06-27 1985-01-18 Japan Storage Battery Co Ltd Manufacture of positive pole plate for alkaline storage battery
JPS6319762A (en) * 1986-07-11 1988-01-27 Matsushita Electric Ind Co Ltd Nickel positive electrode for alkaline storage battery
JPS6340255A (en) * 1986-08-06 1988-02-20 Sanyo Electric Co Ltd Sintered nickel electrode for alkaline storage battery
JPH01132066A (en) * 1987-11-17 1989-05-24 Matsushita Electric Ind Co Ltd Sealed nickel-hydrogen storage battery using hydrogen storage alloy
US4844948A (en) * 1987-03-03 1989-07-04 Sanyo Electric Co., Ltd. Method of manufacturing nickel hydroxide electrode for alkaline storage cell
JPH01200555A (en) * 1987-10-15 1989-08-11 Sanyo Electric Co Ltd Manufacture of positive pole plate for alkaline storage battery
US6353272B1 (en) 1997-05-30 2002-03-05 Delaval Stork V.O.F. Rotor shaft for a rotary machine and rotary machine provided with a rotor shaft of this kind
US6902846B2 (en) 2000-12-12 2005-06-07 Matsushita Electric Industrial Co., Ltd. Positive electrode plate for alkaline storage battery and method for manufacturing the same, and alkaline storage battery using the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49113624A (en) * 1973-02-26 1974-10-30
JPS54161355A (en) * 1978-06-09 1979-12-20 Minolta Camera Co Ltd Automatic range finder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49113624A (en) * 1973-02-26 1974-10-30
JPS54161355A (en) * 1978-06-09 1979-12-20 Minolta Camera Co Ltd Automatic range finder

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609059A (en) * 1983-06-27 1985-01-18 Japan Storage Battery Co Ltd Manufacture of positive pole plate for alkaline storage battery
JPS6319762A (en) * 1986-07-11 1988-01-27 Matsushita Electric Ind Co Ltd Nickel positive electrode for alkaline storage battery
JPS6340255A (en) * 1986-08-06 1988-02-20 Sanyo Electric Co Ltd Sintered nickel electrode for alkaline storage battery
US4844948A (en) * 1987-03-03 1989-07-04 Sanyo Electric Co., Ltd. Method of manufacturing nickel hydroxide electrode for alkaline storage cell
JPH01200555A (en) * 1987-10-15 1989-08-11 Sanyo Electric Co Ltd Manufacture of positive pole plate for alkaline storage battery
JPH01132066A (en) * 1987-11-17 1989-05-24 Matsushita Electric Ind Co Ltd Sealed nickel-hydrogen storage battery using hydrogen storage alloy
US6353272B1 (en) 1997-05-30 2002-03-05 Delaval Stork V.O.F. Rotor shaft for a rotary machine and rotary machine provided with a rotor shaft of this kind
US6902846B2 (en) 2000-12-12 2005-06-07 Matsushita Electric Industrial Co., Ltd. Positive electrode plate for alkaline storage battery and method for manufacturing the same, and alkaline storage battery using the same

Also Published As

Publication number Publication date
JPH0146845B2 (en) 1989-10-11

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