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US 2008/0166112 A1Published application
Light Emission Control of External Flash For Digital Camera
OwnerYoshiyuki Takematsuinventor
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OwnerYoshiyuki Takematsuinventor
Estimating the term…
A digital camera containing an internal flash also has an externally attached flash which is adapted to emit light by using as trigger a signal received from the internal flash. A control system for the flash includes circuits for starting and stopping preliminary and main emission of light from the external flash by using as trigger the starting and stopping of light emission from the internal flash and may also be adapted to vary the quantity of light from the external flash for the preliminary emission by changing its waveform. A light screen may be provided to prevent light from the internal flash from illuminating the target object to be photographed by the camera and a light conductor such as an optical cable may connect the internal flash with the external flash. A single knob is operated to switch between two or more different modes of operation such as automatic and manual modes.
A flash control system for a digital camera having an internal flash and an external flash, said external flash being adapted to emit light by a signal from a signal detecting means as said signal detecting means receives emitted light from said internal flash, said internal flash being adapted to undergo a preliminary light emission process and subsequently a main light emission process;
A flash control system for a digital camera having an internal flash and an external flash, said external flash being adapted to emit light by a signal from a signal detecting means as said signal detecting means receives detects light from said internal flash, said internal flash being adapted to undergo a preliminary light emission process and subsequently a main light emission process;
A flash control system for a digital camera having an internal flash and an external flash, said external flash being adapted to emit light by a signal from a signal detecting means as said signal detecting means receives detects light from said internal flash, said internal flash being adapted to undergo a preliminary light emission process and subsequently a main light emission process;
A flash control system for a digital camera having an internal flash and an external flash, said external flash being adapted to emit light by a signal from a signal detecting means as said signal detecting means receives detects light from said internal flash, said internal flash being adapted to undergo a preliminary light emission process and subsequently a main light emission process;
A flash control system for an external flash attached to a digital camera with an internal flash, said external flash being operable selectably in an automatic mode and in a manual mode, said flash control system comprising:
A flash control system for an external flash attached to a digital camera with an internal flash, said external flash being operable selectably in at least two of the group of three modes consisting of an exposure correcting mode for varying quantity of light emitted by said external flash by means of an exposure correcting means, an automatic mode and a manual mode and, said flash control system comprising:
Dependencies are inferred from the claim text.