| 摘要 |
A digital document display device capable of displaying a document, retrieving updates, sharing locally with other devices, managing document displays in other digital document display devices in proximity, etc. A e-paper based display unit of the digital document display device is configured to read and display the display image. A motion detector unit helps detect human motion, so that the digital document display device may be set to a low power mode, or powered off, etc. if no humans are detected in the vicinity. A renewable energy power unit is also provided.
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