Abstract: A portable electronic device connected to a peripheral electronic device is disclosed. The peripheral electronic device includes an external output module and a second antenna module. The portable electronic device includes a first antenna module, a receiving processing module and a built-in output module. The first antenna module receives an input signal. The receiving processing module is electrically connected to the first antenna module to process the input signal to generate an output signal. The built-in output module is electrically connected to the receiving processing module to output the output signal. When the receiving processing module is connected to the peripheral electronic device, the second antenna module receives the input signal, the receiving processing module processes the input signal to generate the output signal, and the external output module outputs the output signal. A control method of the portable electronic device is also disclosed.

Abstract: A surface processing method for a casing is disclosed. The method includes the following steps: performing an anodic treatment to a casing material, drying the casing material and printing a pattern on the casing material via digital printing. The method can reduce the surface processing cost and provide the appearance of the object with diverse patterns or colors.

Abstract: A casing printing method and a printing apparatus using the same are disclosed. The printing method includes the following steps: providing an casing material to a printing apparatus, inputting data or information to a receiving module of the printing apparatus, detecting and adjusting a distance between a printing component of a printing module and the surface of the casing material real-timely via the printing module of the printing apparatus, and printing a pattern on the surface of the casing material correspondingly via the printing module of the printing apparatus according to the data or the information. The method can be applied to electronic device casings made of different materials, and it does not need to change the manufacture process and the casing can have diverse patterns or colors.