Abstract: A filter driving apparatus for a camera is described. The filter driving apparatus comprises a casing, a sliding portion, a magnetic body, and a coil portion. A viewing hole is formed on the central top area of the casing. A sliding channel is formed on the top and bottom area of the casing. The sliding portion slides in the sliding channel. A filter is set on the sliding portion and on the top area of the casing. The magnetic body is set on the bottom area of the casing. The magnetic body connects with the sliding portion. The coil portion is set on the bottom area of the casing. The coil portion generates a pole different from or the same with the magnetic body by inputting different currents, so that a repelling force or an engaging force is generated between the magnetic body and the coil portion. Therefore, the magnetic body could leave from or close to the coil portion, and the filter could be overlapped or removed from the viewing hole.

Abstract: A rapid-mounting security monitoring and controlling system is disclosed. Co-axial cable is used to transmit power supply, images, sound, and to control detected signals so as to rapidly installation of wirings for the security monitoring and controlling system. The complexity of wiring installation is improved and the installation cost and the material cost are greatly reduced.