Photography – Battery insertion/removal/depletion responsive – Having indicator
Patent
1996-04-26
1998-03-24
Metjahic, Safet
Photography
Battery insertion/removal/depletion responsive
Having indicator
346272, 324429, 324433, G03B 726, G01N 2742
Patent
active
057322953
ABSTRACT:
A camera with a battery checking function is provided with a timer for generating an output signal at predetermined time intervals, a memory for storing a calculated time value, an external switch for generating an activating signal for activating the camera, and a microcomputer for activating the camera in response to the activating signal generated by the external switch, for updating the content of the memory in accordance with the output of the timer at first time intervals when the camera is activated, for placing the camera in a standby mode when the activating signal has not been detected for a predetermined period of time, and for updating the content of the memory in accordance with the output of the timer means at second time intervals, longer than the first time intervals, when the camera is in a standby mode. A voltage detector detects the voltage of a battery at third time intervals when the camera is activated and detects the voltage of the battery at fourth time intervals when the camera is in the standby mode. A display indicates the charge level of the battery.
REFERENCES:
patent: 4716433 (1987-12-01), Alyfuku
patent: 4821338 (1989-04-01), Naruse et al.
patent: 4866471 (1989-09-01), Ikuta
patent: 5070357 (1991-12-01), Kazami et al.
patent: 5164761 (1992-11-01), Isono et al.
patent: 5424800 (1995-06-01), Suzuki
patent: 5473262 (1995-12-01), Yoshimatsu
patent: 5528335 (1996-06-01), Terunuma
Kaneoka Tetsumi
Miyata Teruyo
Saito Hiroyuki
Seki Yoichi
Dalakis Michael
Metjahic Safet
Seiko Precision Inc.
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