US 8,027,559 B2Granted

Image reproducing apparatus and control method therefor

AssigneeCanon Kabushiki Kaisha

InventorKazuhiko Nakazawa

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Abstract

An image reproducing apparatus is connected to a display device via a video data transmitting unit and a file data transmitting unit and is driven by a battery. The image reproducing apparatus calculates a first electric power required to transmit video data to the display device and a second electric power required to transmit file data to the display device, and acquires a remaining amount of electric power in the battery. Then, the image reproducing apparatus judges whether the acquired remaining amount of electric power in the battery is equal to or larger than the first electric power, is equal to or larger than the second electric power but smaller than the first electric power, or is smaller than the second electric power, and determines whether the image data is to be transmitted as the video data or the file data.

Claims8

Dependent claims

An image reproducing apparatus for use with a video data transmitting unit that can transmit video data to a display device and a file data transmitting unit that can transmit file data to the display device, wherein a battery powers the image reproducing apparatus, and the video data is obtained by decoding the file data, the image reproducing apparatus comprising:

a processor;
a calculating unit configured to use the processor to calculate a first electric power required to transmit image data stored in a storage unit to the display device as the video data and a second electric power required to transmit the image data to the display device as the file data;
an acquiring unit configured to acquire a remaining amount of electric power in the battery;
a comparing unit configured to compare the remaining amount of electric power in the battery acquired by the acquiring unit with both the first electric power and the second electric power calculated by the calculating unit and generates a first comparison result;
and
a determination unit configured to determine, using the first comparison result generated by the comparing unit, in a case where the comparison result of the comparing unit indicates that the remaining amount of electric power in the battery is equal to or larger than the first electric power, that the image data is to be transmitted as the video data to the display device by using the video data transmitting unit, and in a case where the comparison result of the comparing unit indicates that the remaining amount of electric power in the battery is equal to or larger than the second electric power and also is lower than the first electric power, that the image data is to be transmitted as the file data to the display device by using the file data transmitting unit.

3 more elements

A control method for an image reproducing apparatus, the image reproducing apparatus for use with a video data transmitting unit that can transmit video data to a display device and a file data transmitting unit that can transmit file data to the display device, wherein a battery powers the image reproducing apparatus, and the video data is obtained by decoding the file data, the control method using a processor, the control method comprising:

calculating, using the processor, a first electric power required to transmit image data stored in a storage unit to the display device as the video data and a second electric power required to transmit the image data to the display device as the file data;
acquiring a remaining amount of electric power in the battery;
comparing the remaining amount of electric power in the battery with the first electric power and the second electric power and generating a first comparison result;
and
determining, using the first comparison result, in a case where the first comparison result indicates that the remaining amount of electric power in the battery is equal to or larger than the first electric power, that the image data is to be transmitted as the video data to the display device by using the video data transmitting unit, and in a case where the first comparison result indicates that the remaining amount of electric power in the battery is equal to or larger than the second electric power and also is lower than the first electric power, that the image data is to be transmitted as the file data to the display device by using the file data transmitting unit.

2 more elements

Dependencies are inferred from the claim text.