JPS628774B2 - - Google Patents

Info

Publication number
JPS628774B2
JPS628774B2 JP52085752A JP8575277A JPS628774B2 JP S628774 B2 JPS628774 B2 JP S628774B2 JP 52085752 A JP52085752 A JP 52085752A JP 8575277 A JP8575277 A JP 8575277A JP S628774 B2 JPS628774 B2 JP S628774B2
Authority
JP
Japan
Prior art keywords
shutter
operational amplifier
switch
inverting input
turned
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
Application number
JP52085752A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5421340A (en
Inventor
Masamichi Furukawa
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP8575277A priority Critical patent/JPS5421340A/ja
Priority to US05/923,903 priority patent/US4213683A/en
Priority to DE2831520A priority patent/DE2831520C3/de
Publication of JPS5421340A publication Critical patent/JPS5421340A/ja
Publication of JPS628774B2 publication Critical patent/JPS628774B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Shutter-Related Mechanisms (AREA)
  • Electronic Switches (AREA)
JP8575277A 1977-07-18 1977-07-18 Electronic shutter drive device for camera which uses logarithm extension circuit Granted JPS5421340A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP8575277A JPS5421340A (en) 1977-07-18 1977-07-18 Electronic shutter drive device for camera which uses logarithm extension circuit
US05/923,903 US4213683A (en) 1977-07-18 1978-07-12 Electronic shutter driving device for camera
DE2831520A DE2831520C3 (de) 1977-07-18 1978-07-18 Elektronische Verschlußsteuereinrichtung für eine Kamera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8575277A JPS5421340A (en) 1977-07-18 1977-07-18 Electronic shutter drive device for camera which uses logarithm extension circuit

Publications (2)

Publication Number Publication Date
JPS5421340A JPS5421340A (en) 1979-02-17
JPS628774B2 true JPS628774B2 (en, 2012) 1987-02-24

Family

ID=13867578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8575277A Granted JPS5421340A (en) 1977-07-18 1977-07-18 Electronic shutter drive device for camera which uses logarithm extension circuit

Country Status (1)

Country Link
JP (1) JPS5421340A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212081A (ja) * 1990-01-17 1991-09-17 Sharp Corp 磁気記録再生装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062433A (en, 2012) * 1973-10-02 1975-05-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03212081A (ja) * 1990-01-17 1991-09-17 Sharp Corp 磁気記録再生装置

Also Published As

Publication number Publication date
JPS5421340A (en) 1979-02-17

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