Camera with battery checkup function
First Claim
1. A camera having battery checking means comprising:
- timer means for generating an output signal at predetermined time intervals;
time storing means for storing a calculated time value;
a switch for generating an activating signal for activating the camera;
control means for activating the camera in response to the activating signal generated by the switch, for updating the content of the time storing means in accordance with the output of the timer means 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 time storing means 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;
voltage detecting means for detecting the voltage of a battery at third time intervals when the camera is activated and for detecting the voltage of the battery at fourth time intervals when the camera is in the standby mode; and
indicator means for indicating the charge level of the battery.
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Accused Products
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.
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Citations
22 Claims
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1. A camera having battery checking means comprising:
- timer means for generating an output signal at predetermined time intervals;
time storing means for storing a calculated time value;
a switch for generating an activating signal for activating the camera;
control means for activating the camera in response to the activating signal generated by the switch, for updating the content of the time storing means in accordance with the output of the timer means 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 time storing means 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;
voltage detecting means for detecting the voltage of a battery at third time intervals when the camera is activated and for detecting the voltage of the battery at fourth time intervals when the camera is in the standby mode; and
indicator means for indicating the charge level of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- timer means for generating an output signal at predetermined time intervals;
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13. An electronic device having battery checking means, comprising:
- timer means for generating a first output signal at predetermined time intervals;
counter means for counting the first output signals and generating a second output signal when the count exceeds a predetermined value;
a memory for storing a count value;
a switch for generating an activating signal;
control means responsive to the activating signal for activating the electronic device, for updating the count value stored in the memory in accordance with an output of the counter means at first intervals when the electronic device is activated, for placing the electronic device 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 electronic device is in a standby mode;
battery voltage detecting means for detecting the voltage of a battery at third time intervals when the electronic device is activated and for detecting the voltage of the battery at fourth time intervals when the electronic device is in the standby mode; and
indicator means for indicating the charge level of the battery. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
- timer means for generating a first output signal at predetermined time intervals;
Specification