Claims
- 1. An electronic flash device, comprising:
- means for emitting flash light;
- a first terminal for receiving a flash synchronizing signal;
- means, responsive to the flash synchronizing signal, for starting emission of flash light from said flash light emitting means;
- means for providing data corresponding to a cone of light of said flash light emitting means;
- a second terminal;
- means for serially transmitting the data through said second terminal to the photographic camera in synchronism with a clock pulse train fed from the photographic camera; and
- a third terminal for receiving the clock pulse train.
- 2. An electronic flash device according to claim 1, wherein the data corresponding to the cone of light includes data representative of the amount of flash light variable in accordance with the cone of light.
Priority Claims (3)
Number |
Date |
Country |
Kind |
57-186640 |
Oct 1982 |
JPX |
|
57-190996 |
Oct 1982 |
JPX |
|
57-219565 |
Dec 1982 |
JPX |
|
Parent Case Info
This application is a continuation application of application Ser. No. 801,303, filed Nov. 25, 1985 now U.S. Pat. No. 4,755,845, which is a divisional application of application Ser. No. 5440870, filed Oct. 24, 1983 now U.S. Pat. No. 4,558,939.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
Country |
Parent |
544870 |
Oct 1983 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
801303 |
Nov 1985 |
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