JPS5446549A - Shutter speed setter - Google Patents
Shutter speed setterInfo
- Publication number
- JPS5446549A JPS5446549A JP11303077A JP11303077A JPS5446549A JP S5446549 A JPS5446549 A JP S5446549A JP 11303077 A JP11303077 A JP 11303077A JP 11303077 A JP11303077 A JP 11303077A JP S5446549 A JPS5446549 A JP S5446549A
- Authority
- JP
- Japan
- Prior art keywords
- cnt
- shutter speed
- output
- strobo
- level
- 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
Landscapes
- Shutter-Related Mechanisms (AREA)
Abstract
PURPOSE: To enhance the operability and to eliminate the tuning mistake by setting the shutter speed settable range within the tuning range of a flash light source in response to the signals detecting the mounting of the flash light source in a camera.
CONSTITUTION: When a strobo is inserted, a switch SW1 is turned on so as to reduce the output of a circuit 1 to an L level. The output is then differentiated by a differentiating circuit 7 and is fed to an AND1. A counter CNT has its LOAD terminal reduced temporarily to the L level thereby to call the data from an input circut to A to D circuits. These data correspond to the maximum tunable shutter speed of the strobo. The content of the CNT can be changed to a desired shutter speed by operating a switch SW2. When the content of the CNT becomes "1111", an AND2 holds so that the output is fed through an NAND and reduced to the "L" level. The resultant output is further fed through the AND1 to the LOAD terminal of the CNT. As a result, the CNT calls the input data from the terminals A to D. At this time, the AND3 does not hold so that the signals to the clear terminal of the CNT are prohibited. Thus, the settable shutter speed can be restricted to the tunable range of the strobo
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11303077A JPS5446549A (en) | 1977-09-20 | 1977-09-20 | Shutter speed setter |
DE2857159A DE2857159C2 (en) | 1977-07-27 | 1978-07-27 | Device for manual and automatic exposure time setting for a reflex camera |
DE2833064A DE2833064C2 (en) | 1977-07-27 | 1978-07-27 | Device for setting and displaying the exposure time in a camera |
US06/107,404 US4345826A (en) | 1977-07-27 | 1979-12-26 | Shutter speed setting and display apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11303077A JPS5446549A (en) | 1977-09-20 | 1977-09-20 | Shutter speed setter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5446549A true JPS5446549A (en) | 1979-04-12 |
Family
ID=14601682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11303077A Pending JPS5446549A (en) | 1977-07-27 | 1977-09-20 | Shutter speed setter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5446549A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51124419A (en) * | 1975-04-22 | 1976-10-29 | Ryuichiro Naka | Electro-flash synchronizing device for camera |
-
1977
- 1977-09-20 JP JP11303077A patent/JPS5446549A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51124419A (en) * | 1975-04-22 | 1976-10-29 | Ryuichiro Naka | Electro-flash synchronizing device for camera |
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