| 摘要 |
A digital photo frame (DPF) includes a power management unit, a display panel, a backlight unit, an image capturing unit and a processing unit. The display panel includes a reflective structure. The power management unit is used to manage the power supply from a power source to the DPF. The backlight unit connects with the display panel and the power management unit. The image capturing unit is used to capture images of objects around the DPF and produce a detection signal when the image includes a face of a person. The processing unit connects with the image capturing unit and the power management unit, the processing unit controls the power management unit to discontinue the power from the power source to the backlight unit when receiving the detection signal, therefore the display panel reflects images via the reflective structure.
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