| US 7,542,092 B2 | ||
| Digital camera with a battery checking device | ||
| Yutaka Ohsawa, Tokyo (Japan) | ||
| Assigned to Hoya Corporation, Tokyo (Japan) | ||
| Filed on Mar. 29, 2005, as Appl. No. 11/91,433. | ||
| Claims priority of application No. 2004-107071 (JP), filed on Mar. 31, 2004. | ||
| Prior Publication US 2005/0219406 A1, Oct. 06, 2005 | ||
| Int. Cl. H04N 5/225 (2006.01) | ||
| U.S. Cl. 348—372 [348/222.1; 348/362; 348/333.04] | 16 Claims |
| 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 operation is forcibly terminated.
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