JPH0437624B2 - - Google Patents

Info

Publication number
JPH0437624B2
JPH0437624B2 JP57042703A JP4270382A JPH0437624B2 JP H0437624 B2 JPH0437624 B2 JP H0437624B2 JP 57042703 A JP57042703 A JP 57042703A JP 4270382 A JP4270382 A JP 4270382A JP H0437624 B2 JPH0437624 B2 JP H0437624B2
Authority
JP
Japan
Prior art keywords
helicoid
circuit
output
frequency
lens
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 - Lifetime
Application number
JP57042703A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58161579A (ja
Inventor
Yoshihiro Todaka
Kentaro Hanma
Toshio Murakami
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 Ltd filed Critical Hitachi Ltd
Priority to JP57042703A priority Critical patent/JPS58161579A/ja
Publication of JPS58161579A publication Critical patent/JPS58161579A/ja
Publication of JPH0437624B2 publication Critical patent/JPH0437624B2/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
    • 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)
JP57042703A 1982-03-19 1982-03-19 自動合焦装置 Granted JPS58161579A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57042703A JPS58161579A (ja) 1982-03-19 1982-03-19 自動合焦装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57042703A JPS58161579A (ja) 1982-03-19 1982-03-19 自動合焦装置

Publications (2)

Publication Number Publication Date
JPS58161579A JPS58161579A (ja) 1983-09-26
JPH0437624B2 true JPH0437624B2 (zh) 1992-06-19

Family

ID=12643414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57042703A Granted JPS58161579A (ja) 1982-03-19 1982-03-19 自動合焦装置

Country Status (1)

Country Link
JP (1) JPS58161579A (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60143068A (ja) * 1983-12-29 1985-07-29 Matsushita Electric Ind Co Ltd 自動焦点整合装置
JP2542361B2 (ja) * 1985-09-10 1996-10-09 株式会社三協精機製作所 自動合焦信号検出装置
KR940011885B1 (ko) * 1987-02-18 1994-12-27 상요덴기 가부시기가이샤 영상 신호에 기인해서 초점의 자동 정합을 행하는 오토포커스 회로
JPH03117275A (ja) * 1989-09-29 1991-05-20 Sanyo Electric Co Ltd オートフォーカスカメラ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158327A (zh) * 1974-06-10 1975-12-22

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118207U (zh) * 1979-02-13 1980-08-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50158327A (zh) * 1974-06-10 1975-12-22

Also Published As

Publication number Publication date
JPS58161579A (ja) 1983-09-26

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