Abstract: The present invention discloses an apparatus and method for controlling a disc player. The disc player comprises at least one optical drive and a card reader. Image files output by the card reader are transferred to video signals and showed on TV screen for editing. Furthermore, the disclosed disc player has a function of time division multiplexing. When disc player is operating in a soundless operation mode and there is a music disc loaded in the optical drive, the disc player will play the music disc at the same time. In this way, the user can listen to the music by using a music disc loaded into the optical drive when the disc player is operated in the soundless operation mode.

Abstract: Method for controlling the rotating speed of an electromechanical device is disclosed herein, the aforementioned method including the following steps. The first step is to map a plurality sets of electrical-parameter means to different ranges of rotating speed of the electromechanical device to form a mapping table. The plurality sets of electrical-parameter means couples various resistance to the electromechanical device and eliminating the back EMF (Electro-Mechanical Force) in said electromechanical device. The second step is to connect a set of electrical-parameter means of said plurality sets of electrical-parameter means to a driving means. The driving means is used to provide the power that used in the operation of the electromechanical device, the set of electrical-parameter means is connected to the driving means according to the mapping table.