A front surround sound reproduction system which improves the performance of beam steering by using a speaker array arranged geometrically on two or more planes or on one curved surface, and a signal reproducing method of the system. A garage door opener system is supplemented with motion sensor technology or RFID technology to allow for automatic activation of a garage door opener. Also, a pushing part is formed on the outer side of each pushing rod so that the complete front end of the pushing block can be into a rectangular transparent trough at the center of the telephone rack. Each direct cam member has a release action portion that engages with the releasing projection of a developing cartridge when the developer carrier is to be separated from the image carrier. It hence presents a color image forming apparatus capable of obtaining images of high print quality. In addition, the thickness of the touch-sensitive display panel is relative small.