| 摘要 |
In portable information processing devices, such as notebook computers, that can run on batteries and are capable of receiving digital broadcasting, enable setting an optimal operating state by predicting, in accordance with digital-broadcast reception status, how long listening and viewing will be possible. Furnished are: a signal-processing component that decodes into image data data signals received by a digital-broadcast reception component; an image-quality determining means for determines image quality of the data signals received by the digital-broadcast reception component; a remaining-capacity detection means for detects remaining capacity of batteries that supply a source of electricity to the device main unit; an optimal-operation specifying component that, based on the determination results from the image-quality determining component and the detection results from the remaining-capacity detection component, determines the optimal operating state that should be currently selected; and a notification means for reports the results of the determination by the optimal-operation specifying component.
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