Abstract: A portable electronic device is disclosed. The portable electronic device includes: an image capturing device, for capturing a first image; a focal distance measuring device, for measuring a plurality of focal distances corresponding to a plurality positions of the first image; a display device, for outputting a picture; and a motion detecting controller, for determining variations of the plurality of focal distances measured by the focal distance measuring device when the portable electronic device moves or rotates, and controlling the picture shown in the display device according to the variations of the plurality of focal distances.

Abstract: A flat display apparatus is disclosed. The flat display apparatus includes an abnormal operation status detector and an abnormal signal transceiver, and is adapted for instantly reporting an abnormal operation status. The abnormal operation status detector is adapted for detecting an abnormal operation status of the flat display apparatus and generating a corresponding abnormal signal. The abnormal signal transceiver receives the abnormal signal and then transmits the abnormal signal to a suitable receiver so as to actively detect the operation status of the flat display apparatus for reporting to the receiver, thus providing a high efficiency maintenance mechanism and an instant monitoring system.

Abstract: A portable electronic device is disclosed. The portable electronic device includes: an image capturing device, for capturing a first image; a focal distance measuring device, for measuring a plurality of focal distances corresponding to a plurality positions of the first image; a display device, for outputting a picture; and a motion detecting controller, for determining variations of the plurality of focal distances measured by the focal distance measuring device when the portable electronic device moves or rotates, and controlling the picture shown in the display device according to the variations of the plurality of focal distances.

Abstract: A data exchange method and system based on continuous machine-readable code, which transfers data between a first device and a second device. The first device has a display, and the second device has an image extractor. The first device divides data to be transferred into a plurality of blocks and converts the blocks into corresponding machine-readable codes. The second device uses the image extractor to continuously capture the machine-readable codes displayed on the display of the first device, respectively decodes the machine-readable codes to thereby obtain the blocks, and concatenates the blocks to thus obtain the data.