JPS5434819A - Electronic shutter driving device by use of logarithm extension circuit - Google Patents

Electronic shutter driving device by use of logarithm extension circuit

Info

Publication number
JPS5434819A
JPS5434819A JP10142777A JP10142777A JPS5434819A JP S5434819 A JPS5434819 A JP S5434819A JP 10142777 A JP10142777 A JP 10142777A JP 10142777 A JP10142777 A JP 10142777A JP S5434819 A JPS5434819 A JP S5434819A
Authority
JP
Japan
Prior art keywords
logarithm
driving device
electronic shutter
shutter driving
extension circuit
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
JP10142777A
Other languages
English (en)
Japanese (ja)
Other versions
JPS628775B2 (enrdf_load_stackoverflow
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 JP10142777A priority Critical patent/JPS5434819A/ja
Priority to US05/923,903 priority patent/US4213683A/en
Priority to DE2831520A priority patent/DE2831520C3/de
Publication of JPS5434819A publication Critical patent/JPS5434819A/ja
Publication of JPS628775B2 publication Critical patent/JPS628775B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Shutter-Related Mechanisms (AREA)
  • Electronic Switches (AREA)
JP10142777A 1977-07-18 1977-08-24 Electronic shutter driving device by use of logarithm extension circuit Granted JPS5434819A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP10142777A JPS5434819A (en) 1977-08-24 1977-08-24 Electronic shutter driving device by use of 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
JP10142777A JPS5434819A (en) 1977-08-24 1977-08-24 Electronic shutter driving device by use of logarithm extension circuit

Publications (2)

Publication Number Publication Date
JPS5434819A true JPS5434819A (en) 1979-03-14
JPS628775B2 JPS628775B2 (enrdf_load_stackoverflow) 1987-02-24

Family

ID=14300398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10142777A Granted JPS5434819A (en) 1977-07-18 1977-08-24 Electronic shutter driving device by use of logarithm extension circuit

Country Status (1)

Country Link
JP (1) JPS5434819A (enrdf_load_stackoverflow)

Families Citing this family (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
JPS628775B2 (enrdf_load_stackoverflow) 1987-02-24

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