Abstract: A casing structure includes a case member and a sliding member. The case member includes a first case body and a second case body. The sliding member includes a first slider, a second slider, and a torsion spring. The first case body and the second case body may move relative to each other through the sliding member. The first slider includes a hollow part and a spring fixing part extending from an edge of the hollow part into the first case body. The torsion spring includes a spiral portion. The two ends of the torsion spring are respectively disposed on the spring fixing part and the second slider, and the spiral portion of the torsion spring corresponds to the hollow part, thus reducing an overall thickness of the casing structure.

Abstract: A phone dialing method is carried out on a communication device when browsing photos so as to make a phone call. First, a browser is activated to load a picture. Face features of all the existing human faces are detected. The face features of all contacts in a directory are compared to find out the contact matching the characters of human face. Then, the phone number of the contact is dialed. Further, after the picture is loaded, a user may set an identification area to narrow down the scope of identifying human faces. After that, the characters of human face of the selected human face are analyzed, and a search is made in the directory to find the contact matching the characters of human face. Finally, call contact by the number of directory.

Abstract: A composite input device and an input method thereof are described. A plurality of pressing members outputs a first signal in response to a press. The first signal is used for actuating a corresponding first function of each of the pressing members. A plurality of optical transceivers is respectively disposed in the pressing members, and each of the optical transceivers transmits an optical signal to pass through each of the pressing members and outputs a second signal on receiving the reflected optical signal. The second signal is used for actuating a corresponding second function of each of the pressing members.

Abstract: An input device applicable to a portable electronic device includes a first input interface and a second input interface. The second input interface is disposed in the center of the first input interface, such that the first input interface is divided into a first key group and a second key group. The first key group and the second key group allow the user to distinctly recognize position of each key to be pressed, and when the second input interface is operated, the user is capable of holding the gravity position of the portable electronic device by two hands, thereby stably performing the hand held operation.

Abstract: A mobile electronic device includes a main body, a support frame, and a switch. When the support frame is in the first mode and used to support the main body, the main body is required to execute the first function by the support frame and the switch. For example, the first function is used to control the display and includes related functions of multimedia reproducing. In addition, when the support frame is in the second mode and used to support the main body, the main body is required to execute the second function by the support frame and the switch. For example, the second function is used to control the speaker and includes related functions. Whereby, the mobile electronic device includes different two modes to instinctively and automatically switch between video and audio files reproducing.