Power source device
AssigneeCanon Kabushiki Kaisha
InventorToshiaki Mabuchi
Life of this patent
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Abstract
A power source device to and from which an interchangeable first device can be attached and detached and operating in such a manner that when the first device is attached and when the first device is judged to be normally operating, electric power is supplied at all times to the first device, while when the first device is not attached, or when, though the first device is attached, the first device is judged not to be normally operating, electric power is supplied in a predetermined periodicity to the first device.
Claims16
A power supply system having a power source and an outer device which is detachably attached to said power source, comprising:
- (a) judging means for judging whether data communication between said power source and said outer device is normal or not;
- and
- (b) control means for intermittently supplying power from said power source to said device and for intermittently carrying out data communication by said judging means when the data communication is judged not to be normal until the data communication is judged to be normal.
A power supply system having a power source and an outer device which is detachably attached to said power source, comprising:
- (a) judging means for intermittently carrying out data communication to judge whether data communication between said power source and said outer device is normal or not;
- and
- (b) control means for intermittently supplying power from said power source to said outer device when the data communication is judged not to be normal and for continually supplying power from said power source to said outer device when the data communication is judged to be normal.
Dependencies are inferred from the claim text.