Digital camera
First Claim
1. A digital camera comprising:
- an image pickup device which converts incident light of an object image into an electrical signal during an exposure operation;
a processor which captures said electrical signal, and thereafter generates a digital image from said electrical signal;
a battery checking device which performs a battery check process for determining whether a battery voltage of said digital camera is lower than a predetermined voltage level;
a controller which forcibly terminates said exposure operation when said battery checking device determines that said battery voltage drops below said predetermined voltage level during said exposure operation, and subsequently makes said processor start capturing said electrical signal in order to generate a backup digital image; and
a warning device which warns a user that said exposure operation is forcibly terminated due to a shortage of said battery voltage and that said backup digital image is underexposed, in the case where said exposure is forcibly terminated.
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Accused Products
Abstract
A digital camera includes an image pickup device which converts incident light of an object image into an electrical signal during an exposure operation; a processor which captures the electrical signal, and thereafter generates a digital image from the electrical signal; a battery checking device which performs a battery check process for determining whether a battery voltage of the digital camera is lower than a predetermined voltage level; a controller which forcibly terminates the exposure operation when the battery checking device determines that the battery voltage drops below the predetermined voltage level during the exposure operation, and subsequently makes the processor start capturing the electrical signal in order to generate a backup digital image; and a warning device which warns a user that the exposure operation is forcibly terminated due to a shortage of the battery voltage and that the backup digital image is underexposed, in the case where the exposure is forcibly terminated.
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Citations
16 Claims
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1. A digital camera comprising:
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an image pickup device which converts incident light of an object image into an electrical signal during an exposure operation;
a processor which captures said electrical signal, and thereafter generates a digital image from said electrical signal;
a battery checking device which performs a battery check process for determining whether a battery voltage of said digital camera is lower than a predetermined voltage level;
a controller which forcibly terminates said exposure operation when said battery checking device determines that said battery voltage drops below said predetermined voltage level during said exposure operation, and subsequently makes said processor start capturing said electrical signal in order to generate a backup digital image; and
a warning device which warns a user that said exposure operation is forcibly terminated due to a shortage of said battery voltage and that said backup digital image is underexposed, in the case where said exposure is forcibly terminated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A digital camera comprising:
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an image pickup device which converts incident light of an object image into an electrical signal during an exposure operation;
a processor which captures said electrical signal, and thereafter generates a digital image from said electrical signal;
a battery checking device which performs a battery check process for determining whether a battery voltage of said digital camera is lower than a predetermined voltage level; and
a controller which forcibly terminates said exposure operation when said battery checking device determines that said battery voltage drops below said predetermined voltage level during said exposure operation, and subsequently makes said processor start capturing said electrical signal in order to generate a backup digital image, wherein said battery checking device performs said battery check process during exposure at a shutter speed one of equal to and slower than a flash sync speed, and does not perform said battery check process during exposure at a shutter speed faster than said flash sync speed. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification