An encoding device includes a processor unit controlling an overall operation and at the same time having a software for executing an audio encoding process, a video encoding unit to execute a video encoding process, a multiplex process unit to execute a system process and a timing control unit to generate a timing signal for activating an audio encoding process, a video encoding process and a system process, all of these elements are mountable on the same substrate. Each of a control process for controlling the audio encoding process, the video encoding process and system process is executed as an interrupt process. The processor unit includes an interrupt control circuit. The interrupt control circuit selects, based on a predetermined priority, one interrupt process corresponding to at least one generated timing signal.

The present invention relates to a method for eliminating a blocking effect in a compressed video signal signal. The method of the invention includes: the encoding step of eliminating a blocking effect by compensating the motion of a signal compressed in block unit to be transmitted; the decoding step of restoring the motion compensated video signal to the original video signal by reducing the prediction residual between the motion compensated video signal and the original video signal and the blocking effect; and the post-filtering step of performing post-filtering in a blocking elimination filter in order to eliminate a blocking effect and ring effect remained in the compensated signal. The equation for obtaining the original pixel is made simple by eliminating the remaining blocking effect and ring effect using a loop/post filter. In addition, normalization parameters can be stored in the look-up table and can be detected according to the difference between pixels adjacent to the original pixel and the size of quantizaiton, whereby the equation for restoring the compressed moving video signal, resulting in excessive smoothing, becomes simpler, and filtering control is made possible by a simple equation, thus making a high speed real time video signal processing possible.