A method and apparatus for video encoding, predecoding, and video decoding for video streaming services. A cross sectional along the principal plane of the substrate of the plugs is set to be a rectangle, and the long sides of the rectangle are parallel to the direction perpendicular to the direction connecting one end and the other end of the heat generating layer. The data acquisition engine is configured to look into the memory heap, evaluate event conditions as true or false based on the at least one each of the pointers, operators, and arguments, and generate a notification message when a true condition is found. Thus, the aperture factor of the EL display device is enlarged. The decode string is sent to one or more visual detection applications for processing, wherein the one or more visual detection applications reside on the portable electronic device, and receiving a first amount of information about the object from the one or more visual detection applications.