Abstract: An interactive projection system includes an electronic device, a projection device and an interactive module. The projection device is connected with the electronic device for receiving a first image signal generated by the electronic device and accordingly projecting a first image. The interactive module includes a processing unit, a storage unit connected with the processing unit for storing a calibration data, an image capture unit connected with the processing unit for capturing the first image and a light point image, and a communication unit connected with the electronic device and the processing unit for transmitting an absolute coordinate information computed and generated by the processing unit according to the light point image and the calibration data to the electronic device. An output signal is generated by the electronic device with the absolute coordinate information. Therefore, the present invention avoids the repeating image calibration and reduces labor cost and time cost.

Abstract: An electronic book includes a display, a first area displaying module, a second area displaying module, a processing module, and a browsing module. The display includes a first displaying area and a second displaying area. The first area displaying module is configured to control a list of applications to be displayed on the first displaying area. The processing module is configured to find associated information associated with an application selected by a user from the list of applications. The second area displaying module is configured to control the associated information to be displayed on the second displaying area.

Abstract: A method of displaying images on an electronic device includes the following blocks. A first image is displayed on a display. The first image has a first edge and a second edge opposite to the first edge. A second image is decoded and loaded to a virtual position behind the first image. The first image is divided into a plurality of rectangular areas. The first image is cropped in the plurality of rectangular areas in sequence along a direction from the first edge to the second edge. Each of the plurality of rectangular areas fades to transparency. The second image is shown on the display.

Abstract: The present invention is to provide a power outlet comprising two elastic pieces being formed at the rears of two insertion holes of the outlet panel, wherein one end of each elastic piece, including a fastening hole corresponding with the insertion holes, is disposed on a fastening board connected with the outlet panel and the other end of each elastic piece facing a base of a chassis of the power outlet is connected with one end of an elastic element. The other end of the elastic element is connected with the base of the chassis. In addition, a switch comprising a spring is connected between the fastening board and the base of the chassis, when the panel being compressed towards the inside of the chassis, the switch can be locked in position, enabling a user to safely and easily operate the electricity power outlet.