Method and device for controlling quantity of light from flash lamp externally attached to digital camera
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United States of America Patent
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N/A
Issued Date -
Nov 21, 2002
app pub date -
Apr 4, 2002
filing date -
Apr 13, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A digital camera has an internally provided flash lamp and an externally attached flash lamp. The internally provided flash lamp is controlled to effect a preliminary emission of light and thereafter a principal emission of light. The externally attached flash lamp emits light, triggered by light from the internally provided flash lamp. A control device is provided to control the light emission from the externally attached flash lamp in response to the primary emission of light from the internally provided flash lamp such that enough energy will be left in the main capacitor for supplying power to the externally attached flash lamp such that a sufficient quantity of light can be emitted in response to the principal emission of light from the internally provided flash lamp.
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