JPS55564A - Shutter device of camera - Google Patents
Shutter device of cameraInfo
- Publication number
- JPS55564A JPS55564A JP3082379A JP3082379A JPS55564A JP S55564 A JPS55564 A JP S55564A JP 3082379 A JP3082379 A JP 3082379A JP 3082379 A JP3082379 A JP 3082379A JP S55564 A JPS55564 A JP S55564A
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- frequency divider
- controller
- specified
- electromagnet
- 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.)
- Pending
Links
Abstract
PURPOSE: To correctly define the exposure time of shutter by making use of electric pulse trains without using any mechanical shutter mechanism.
CONSTITUTION: When the tap corresponding to the specified exposure time is selected out of the respective taps of a frequency divider B and is set and when the release signal 2 of the command from the outside is next applied to a controller C, then the controller C is set and the electromagnet of the shutter is operated from output terminal 4 to open the shutter. At the same time, the oscillation of an oscillator A is started by a circuit 3 and this oscillation output enters the frequency divider B. After the frequency divider B ends counting of the specified counts since it started counting, its count output is sent to the controller C, by which a flip-flop is reset to return the electromagnet of the shutter from the output terminal 4, by which the exposure of the specified time is ended and at the same time the stoppage of the oscillator and clearing of the arithmetic circuit of the frequency divider are accomplished.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3082379A JPS55564A (en) | 1979-03-16 | 1979-03-16 | Shutter device of camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3082379A JPS55564A (en) | 1979-03-16 | 1979-03-16 | Shutter device of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55564A true JPS55564A (en) | 1980-01-05 |
Family
ID=12314415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3082379A Pending JPS55564A (en) | 1979-03-16 | 1979-03-16 | Shutter device of camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55564A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5793611A (en) * | 1980-12-02 | 1982-06-10 | Hitachi Ltd | Turbine starting controller |
-
1979
- 1979-03-16 JP JP3082379A patent/JPS55564A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5793611A (en) * | 1980-12-02 | 1982-06-10 | Hitachi Ltd | Turbine starting controller |
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