JPS5434819A - Electronic shutter driving device by use of logarithm extension circuit - Google Patents
Electronic shutter driving device by use of logarithm extension circuitInfo
- 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
Links
Landscapes
- Exposure Control For Cameras (AREA)
- Shutter-Related Mechanisms (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE: To make it possible to provide a precise operation by giving no influence to the shutter speed on account of the operation output impedance as well as switch impedance even at the time of the high speed shutter operation.
COPYRIGHT: (C)1979,JPO&Japio
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 (en) | 1977-07-18 | 1978-07-18 | Electronic shutter control device for a camera |
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 (en) | 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 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03212081A (en) * | 1990-01-17 | 1991-09-17 | Sharp Corp | Magnetic recording and reproducing device |
-
1977
- 1977-08-24 JP JP10142777A patent/JPS5434819A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS628775B2 (en) | 1987-02-24 |
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