Electronic apparatus and method of controlling the electronic apparatus
AssigneeSeiko Epson Corporation
InventorsTsukasa Kosuda, Norimitsu Baba, Hajime Kurihara, Motomu Hayakawa
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Abstract
An electronic watch in which the display on a liquid crystal display 236 is prohibited when the detected output voltage of a secondary battery 220 drops to a first predefined voltage. An initialization process is performed when the detected voltage of the secondary battery 220 drops to a second voltage lower than the first voltage, and the display on the liquid crystal display unit 236 is restarted when the detected voltage of the secondary battery 220 rises to a third voltage not lower than the first voltage after having reached the second voltage.
Claims11
An electronic apparatus comprising:
- a chargeable power supply unit;
- a display unit supplied with power from said power supply unit;
- a voltage detection unit for detecting an output voltage of said power supply unit;
- a display prohibition unit for prohibiting a display on said display unit when the output voltage of said power supply unit detected by said voltage detection unit is dropping and drops to a first predefined voltage;
- an initialization unit for performing an initialization process when the output voltage of said power supply unit detected by said voltage detection unit is dropping and drops to a second predefined voltage lower than said first predefined voltage;
- and
- a display permission unit for permitting said display on said display unit when the output voltage of said power supply unit detected by said voltage detection unit is rising, reaches said second voltage and then rises a third predefined voltage not lower than said first predefined voltage.
An electronic apparatus comprising:
- a chargeable power supply unit;
- a display unit supplied with power from said power supply unit;
- a charge detection unit for determining whether said power supply unit is being charged or not being charged;
- a voltage detection unit for detecting an output voltage of said power supply unit;
- a display prohibition unit for prohibiting a display on said display unit when the output voltage of said power supply unit detected by said voltage detection unit is dropping and drops to a first predefined voltage;
- and
- an initialization unit for performing an initialization process when the determination result of said charge detection unit and the detection result of said voltage detection unit meet predetermined conditions following the prohibiting of said display on said display.
A method of controlling an electronic apparatus comprising a chargeable power supply unit and a display unit supplied with power from said power supply unit, the method comprising the steps of:
- prohibiting a display on said display unit when the output voltage of said power supply unit reaches a first predefined voltage;
- performing an initialization process when the output voltage of said power supply unit reaches a second predefined voltage lower than said first predefined voltage;
- and
- permitting said display on said display unit when the output voltage of said power supply unit reaches said second predefined voltage and then reaches a third predefined voltage not lower than said first predefined voltage.
Dependencies are inferred from the claim text.