JPS5984530U - Signal transmission device for flash photography equipment - Google Patents
Signal transmission device for flash photography equipmentInfo
- Publication number
- JPS5984530U JPS5984530U JP1983157266U JP15726683U JPS5984530U JP S5984530 U JPS5984530 U JP S5984530U JP 1983157266 U JP1983157266 U JP 1983157266U JP 15726683 U JP15726683 U JP 15726683U JP S5984530 U JPS5984530 U JP S5984530U
- Authority
- JP
- Japan
- Prior art keywords
- camera
- flash device
- signal
- transmission lines
- flash
- 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
- Stroboscope Apparatuses (AREA)
- 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
図は本考案の実施例を示す回路図である。
〔主要部分の符号の説明〕、ＣＡ・・・・・・カメラ側
、ＦＬ・・・・・・フラッシュ装置側、ｒ２〜ｒ５・・
・・・・フラッシュ装置の電源の分圧回路、ｒｌ・・・
・・・カメラの電源の分圧抵抗、Ｑ□・・・・・・トラ
ンジスタ、Ｑ３・・・・・・トランジスタ、Ｑ４・・・
・・・トランジスタ、Ｌａ、 Ｌｂ・・・・・・カメラ
□ 側の情報伝送線路、Ｌｃ、 Ｌｄ・・・・・・フラ
ッシュ装置の情報伝送線路。The figure is a circuit diagram showing an embodiment of the present invention. [Explanation of symbols of main parts], CA...camera side, FL...flash device side, r2 to r5...
...Flash device power supply voltage divider circuit, rl...
...Camera power supply voltage dividing resistor, Q□...Transistor, Q3...Transistor, Q4...
...Transistor, La, Lb... Information transmission line on the camera □ side, Lc, Ld... Information transmission line of the flash device.
Claims (1)
て、 （ａ） 前記カメラ及び前記閃光装置にそれぞれ設け
られた２つの接続端子を介して前記カメラと前記閃光装
置との間の信号伝送を行なう２本の伝送線路、 （ｂ） 時系列上具なった時点で前記カメラまたは前
記閃光装置から前記閃光装置または前記カメラへ伝送す
る複数の信号のうち前記カメラから前記閃光装置へ伝送
するカメラ側信号を発生するために前記カメラに設けら
れた信号発生回路、（Ｃ） 前記複数の信号のうち前
記閃光装置から前記カメラへ伝送する閃光装置側信号を
発生するために前記閃光装置に設けられた信号発生回路
、（ｄ） 前記複数の信号の数に応じて相異なった抵
抗比に基づいた電圧出力を前記２禾の伝送線路間に選択
的に発生するとともに、該抵抗比を決定する抵抗回蕗が
前記２本の伝送線路を介して前記カメラ及び前記閃光装
置にそれぞれ配置された電圧発生回路、 （ｅ） 前記カメラ側信号に応じた抵抗比を選択する
ために前記カメラ側で前記抵抗回路に接続されたカメラ
側スイッチング手段、 （ｆ） 前記閃光装置側信号に応じた抵抗比を選択す
るために前記閃光装置側で前記抵抗回路に接続された閃
光装置側スイッチング手段、 （ｇ） 前記閃光装置側スイッチング手段の作動によ
って前記２本の伝送線路間に発生する電圧出力に応じた
基準電圧を備え、前記閃光装置側信号を前記カメラ側で
検出するカメラ側検出回路、及び （ｈ） 前記カメラ側スイッチング手段の作動によっ
て前記２本の伝送線路間に発生する電圧出力に 応じ
た基準電圧を備え、前記カメラ側信号を前記閃光装置側
で検出する閃光装置側検出回路、を備えたことを特徴と
する信号伝送装置。 −[Claims for Utility Model Registration] In a flash photography device that combines a camera and a flash device, (a) the camera and the flash device can be connected to each other through two connection terminals provided on the camera and the flash device, respectively; (b) two transmission lines for transmitting signals between the camera and the flash device among a plurality of signals transmitted from the camera or the flash device to the flash device or the camera at a time-sequential point; (C) a signal generation circuit provided in the camera for generating a camera-side signal to be transmitted to the device; (d) a signal generating circuit provided in the flash device; (d) selectively generating a voltage output between the two transmission lines based on different resistance ratios according to the number of the plurality of signals; (e) a voltage generating circuit in which a resistor circuit for determining the ratio is arranged in the camera and the flash device, respectively, via the two transmission lines; camera side switching means connected to the resistor circuit on the camera side; (f) flash device side switching means connected to the resistor circuit on the flash device side for selecting a resistance ratio according to the flash device side signal; (g) a camera-side detection circuit that is provided with a reference voltage according to the voltage output generated between the two transmission lines by the operation of the flash device-side switching means, and detects the flash device-side signal on the camera side; and (h) a flash device side detection circuit that is provided with a reference voltage corresponding to the voltage output generated between the two transmission lines by the operation of the camera side switching means and detects the camera side signal on the flash device side; A signal transmission device comprising: −
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983157266U JPS5984530U (en) | 1983-10-13 | 1983-10-13 | Signal transmission device for flash photography equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983157266U JPS5984530U (en) | 1983-10-13 | 1983-10-13 | Signal transmission device for flash photography equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5984530U true JPS5984530U (en) | 1984-06-07 |
Family
ID=30346776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983157266U Pending JPS5984530U (en) | 1983-10-13 | 1983-10-13 | Signal transmission device for flash photography equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5984530U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4893332A (en) * | 1972-03-10 | 1973-12-03 | ||
| JPS5085206A (en) * | 1973-11-28 | 1975-07-09 |
-
1983
- 1983-10-13 JP JP1983157266U patent/JPS5984530U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4893332A (en) * | 1972-03-10 | 1973-12-03 | ||
| JPS5085206A (en) * | 1973-11-28 | 1975-07-09 |
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