Digital electronic still camera with function alarming low volta

Details Digital electronic still camera with function alarming low volta Digital electronic still camera with function alarming low volta

1992-01-13

1993-11-16

Razavi, Michael T.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358909, 358335, H04N 5225, H04N 530

Patent

active

052628680

ABSTRACT:
A memory card has a volatile semiconductor memory for storing therein image data, a built-in battery as a backup power for preserving the image data in the volatile semiconductor memory, and a non-volatile memory for storing therein data related to an alarm of a decrease in a voltage of the built-in battery. When the memory card is loaded on the digital, electronic, still camera, the data concerning the alarm state is read from the loaded memory card and the voltage value of the battery is sensed. If the value of the battery voltage thus determined is less than a threshold voltage attained from the data read from the memory card, an alarm is notified.

REFERENCES:
patent: 4622544 (1986-11-01), Bially et al.
patent: 4827347 (1989-05-01), Bell
patent: 5018017 (1991-02-01), Sasaki et al.
patent: 5091787 (1992-02-01), Watanabe et al.

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