Abstract: A voltage level control circuit controls a target slicing voltage level to slice a video signal by a target circuit. The voltage level control circuit includes a slicing circuit for sequentially slicing the video signal by a plurality of slicing voltage levels to correspondingly generate a plurality of first clock signals; a detection circuit for respectively detecting a plurality of phase differences between the first clock signals and a plurality of corresponding second clock signals to generate a plurality of detection signals; an oscillating circuit for generating the second clock signals according to the detection signals, respectively; and an adjusting circuit for determining whether to adjust the target slicing voltage level according to the detection signals corresponding to the slicing voltage levels.

Abstract: A voltage level control circuit controls a target slicing voltage level to slice a video signal by a target circuit. The voltage level control circuit includes a slicing circuit for sequentially slicing the video signal by a plurality of slicing voltage levels to correspondingly generate a plurality of first clock signals; a detection circuit for respectively detecting a plurality of phase differences between the first clock signals and a plurality of corresponding second clock signals to generate a plurality of detection signals; an oscillating circuit for generating the second clock signals according to the detection signals, respectively; and an adjusting circuit for determining whether to adjust the target slicing voltage level according to the detection signals corresponding to the slicing voltage levels.

Abstract: A command distribution method, and multimedia apparatus and system using the same for playing games are concerned. The game system includes a game platform, a signal transmission module and an audio/video playing device. The audio/video playing device, coupled to the game platform via the signal transmission module, receives a command from the signal transmission module, and processing the command by way of a driver. The command is then transmitted to a data processing engine to be executed so as to generate an output signal. The command distribution method comprises steps of receiving a command from a game platform by an audio/video playing device, identifying a type to which the command corresponds among a plurality of types, and transmitting the command to be processed by a corresponding data processing engine according to the identified type, thereby generating an output signal.