JPS55115029A - Display circuit of camera - Google Patents
Display circuit of cameraInfo
- Publication number
- JPS55115029A JPS55115029A JP2316479A JP2316479A JPS55115029A JP S55115029 A JPS55115029 A JP S55115029A JP 2316479 A JP2316479 A JP 2316479A JP 2316479 A JP2316479 A JP 2316479A JP S55115029 A JPS55115029 A JP S55115029A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- shutter speed
- photographing
- information
- output
- 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
- Indication In Cameras, And Counting Of Exposures (AREA)
Abstract
PURPOSE: To accurately display the shutter speed at the photographing beforehand, by comparing the voltage based on measurement information and photographing information, ASA sensitivity information voltage and shutter speed voltage.
CONSTITUTION: According to set aperture and ASA sensitivity, resistances VR101, VR102 are adjusted and the output voltage of the compression circuit based on the photographing information voltage and photometric information voltage is outputted from an operational amplifier OP101. When the shutter speed is within the automatic exposure limit determined by film sensitivities and the output voltage of the compression circuit becomes larger than the voltage of the resistance VR101 by the ASA set sensitivity, then only the output of the corresponding operational amplifiers OP201, OP202... becomes positive voltage and the specified LEDs P202, P203... are lighted by way of the transistor Q101, etc. which are turned ON by the high level output of the operational amplifier 102, whereby the shutter speed of the correct exposure is obtained and this is displayed. When the shutter speed is below the automatic exposure limit, the inadequacy of the shutter speed is warned by the flickering of the specified LED in a similar manner, thus the shutter speed at the photographing is accurately announced beforehand.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2316479A JPS55115029A (en) | 1979-02-28 | 1979-02-28 | Display circuit of camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2316479A JPS55115029A (en) | 1979-02-28 | 1979-02-28 | Display circuit of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55115029A true JPS55115029A (en) | 1980-09-04 |
Family
ID=12102967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2316479A Pending JPS55115029A (en) | 1979-02-28 | 1979-02-28 | Display circuit of camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115029A (en) |
-
1979
- 1979-02-28 JP JP2316479A patent/JPS55115029A/en active Pending
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