JPS6141226U - Shutter time determination circuit - Google Patents
Shutter time determination circuitInfo
- Publication number
- JPS6141226U JPS6141226U JP11901085U JP11901085U JPS6141226U JP S6141226 U JPS6141226 U JP S6141226U JP 11901085 U JP11901085 U JP 11901085U JP 11901085 U JP11901085 U JP 11901085U JP S6141226 U JPS6141226 U JP S6141226U
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- circuit
- time
- signal
- shutter time
- 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
- Exposure Control For Cameras (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の原理を説明するプログラム原理図。
第２図は本考案の実施に係るカメラの平面図。
第３図は本考案の実施例のブロック説明図。第４図は本
考案の測光と露出値の演算回路の結線図。
第５図は本考案のプログラム露出制御の制御回路の結線
図。
第６図は本考案の露出情報を表示するファインダー内の
情報表示状態の説明図。
ＶＲ−１１・ＶＲ−１２争ＶＲ−１３・・・可変抵抗器
、Ａ−１１・Ａ−１４・Ａ−１５＠Ａ−１６・・・バツ
ファ一回路、Ｂ１・・・プログラム決定回路、Ｂ２・・
・最大値検出回路。FIG. 1 is a program principle diagram explaining the principle of the present invention. FIG. 2 is a plan view of a camera according to the present invention. FIG. 3 is a block explanatory diagram of an embodiment of the present invention. FIG. 4 is a wiring diagram of the photometry and exposure value calculation circuit of the present invention. FIG. 5 is a wiring diagram of a control circuit for program exposure control of the present invention. FIG. 6 is an explanatory diagram of the information display state in the viewfinder that displays exposure information of the present invention. VR-11/VR-12 conflict VR-13...Variable resistor, A-11/A-14/A-15@A-16...Buffer circuit, B1...Program determining circuit, B2...・
・Maximum value detection circuit.
Claims (1)
ッター秒時値を手動にて設定するシャッター秒時設定操
作部材と、該部材にて設定されたシャッター秒時値に応
じた信号を形成するシャツター秒時情報発生回路と、プ
リセットシャッター秒時又はオートシャッター秒時モー
ドを選択するモード選択操作部材と、測光回路出力に基
づいてシャッター秒時値を算出するシャッター秒時算出
面路と、該算出回路にて決定されたシャッター秒時値を
表わす信号と前記シャッター秒時情報発生面路からの信
号を比較し短秒時を表わす信号を選択しシャッター秒時
制御回路に伝える比較回路と、前記モード選択操作部材
にプリセットシャッター秒時モードが選択された際に前
記比較回路による前記算出回路出力とシャッター秒時情
報発生一回路からの信号の比較による短秒時信号の選択
を禁止しシャッター秒時情報発生回路からの信号をシャ
ッター秒時制御回路に伝える制御回路を設けたことを特
徴とするカメラのシャッター秒時決定回路。A photometric circuit that generates an output corresponding to the subject brightness, a shutter time setting operation member that manually sets the shutter time value, and a shutter starter that forms a signal according to the shutter time value set by the member. A second time information generation circuit, a mode selection operation member for selecting a preset shutter second time or an automatic shutter second time mode, a shutter second time calculation surface that calculates a shutter second time value based on the photometric circuit output, and the calculation circuit. a comparison circuit that compares a signal representing the shutter speed value determined by the shutter speed with a signal from the shutter speed information generating surface, selects a signal representing a short speed, and transmits the selected signal to the shutter speed control circuit; and the mode selection circuit. When the preset shutter time mode is selected on the operating member, the comparator circuit prohibits the selection of a short time signal by comparing the calculation circuit output with the signal from the shutter time information generating circuit, and generates the shutter time information. A shutter time determining circuit for a camera, comprising a control circuit that transmits a signal from the circuit to a shutter time control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11901085U JPS6141226U (en) | 1985-08-01 | 1985-08-01 | Shutter time determination circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11901085U JPS6141226U (en) | 1985-08-01 | 1985-08-01 | Shutter time determination circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6141226U true JPS6141226U (en) | 1986-03-15 |
Family
ID=30677889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11901085U Pending JPS6141226U (en) | 1985-08-01 | 1985-08-01 | Shutter time determination circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141226U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01296224A (en) * | 1988-05-24 | 1989-11-29 | Asahi Optical Co Ltd | Exposure control device |
| JPH03101208A (en) * | 1989-09-14 | 1991-04-26 | Matsushita Electric Ind Co Ltd | Capacitor device |
| JPH0486627A (en) * | 1990-07-27 | 1992-03-19 | Canon Inc | Camera |
-
1985
- 1985-08-01 JP JP11901085U patent/JPS6141226U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01296224A (en) * | 1988-05-24 | 1989-11-29 | Asahi Optical Co Ltd | Exposure control device |
| JPH03101208A (en) * | 1989-09-14 | 1991-04-26 | Matsushita Electric Ind Co Ltd | Capacitor device |
| JPH0486627A (en) * | 1990-07-27 | 1992-03-19 | Canon Inc | Camera |
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