Video camera with low battery warning

Details Video camera with low battery warning Video camera with low battery warning

2006-09-05

2006-09-05

Ho, Tuan (Department: 2622)

Television

Camera, system and detail

Power supply

C320S106000, C320S125000, C320S132000, C320S133000, C320S134000, C320S135000, C320S136000

Reexamination Certificate

active

07102684

ABSTRACT:
A warning is displayed for a constant time prior to end of a battery with respect to battery packs having various cell structures. A microcomputer14in the side of a video camera recorder body10obtains a reference voltage value from a voltage correction value decided based on information concerning a capacity of a cell in a battery pack obtained from a battery pack20, and an end voltage value at which use of the battery is ended. A display section15is controlled by a result of comparison between the voltage value of the battery pack20and the reference voltage value, and a warning is displayed when the voltage value of the battery pack becomes equal to or lower than the reference voltage value.

REFERENCES:
patent: 4269494 (1981-05-01), Shiozawa et al.
patent: 4598243 (1986-07-01), Kawakami
patent: 5287286 (1994-02-01), Ninomiya
patent: 5633573 (1997-05-01), van Phuoc et al.
patent: 5684387 (1997-11-01), Patino
patent: 5870685 (1999-02-01), Flynn
patent: 6157169 (2000-12-01), Lee
patent: 0560510 (1993-09-01), None
patent: 09269523 (1997-10-01), None
“Smart Battery Data Specification”, Revision 1.1, Dec. 11, 1998.

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