Digital camera with a battery checking device

Television – Camera – system and detail – Power supply

Reexamination Certificate

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Details

C348S222100, C348S362000, C348S333040

Reexamination Certificate

active

07542092

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.

REFERENCES:
patent: 5594715 (1997-01-01), Ogasawara
patent: 6070021 (2000-05-01), Sato
patent: 2001/0033331 (2001-10-01), Eto et al.
patent: 2002/0005907 (2002-01-01), Alten
patent: 2002/0008773 (2002-01-01), Akizuki et al.
patent: 2002/0012048 (2002-01-01), Yamagishi
patent: 2002/0018137 (2002-02-01), Tsuda
patent: 2003/0011704 (2003-01-01), Sawachi
patent: 2003/0020821 (2003-01-01), Watanabe et al.
patent: 2003/0058352 (2003-03-01), Nishijima et al.
patent: 2003/0063215 (2003-04-01), Tsuji
patent: 2003/0137596 (2003-07-01), Kaku
patent: 2004/0257463 (2004-12-01), Goris et al.
patent: 2005/0062878 (2005-03-01), Ogawa et al.
patent: 2000-115588 (2000-04-01), None
patent: 2003-244510 (2003-08-01), None
English Language Abstract of JP 2000-115588.
English Language Abstract of JP 2003-244510.

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