Patent ID: 6035322
Filing Date: 2000-03-07
Classification: H04N

Abstract:
An image processing apparatus comprising:input code write means for receiving a code series input externally and writing the code series to an external memory;input code readout means for reading out input series stored in the external memory;decoding means for receiving the code series from the external memory, decoding the code series for restoring an image;image reconstruction means for reading out a reference image stored in the external memory, and adding to the image restored in said decoding means so as to form a new image;image write means for writing the image formed by said image reconstruction means to the external memory;display image readout means for reading out the image written by said image write means from the external memory, in order to display the image in an external portion; andmemory bus arbitration means for selectively allowing one of said image reconstruction means, said image write means, said input code write means, said input code readout means and said display image readout means to access to the external memory,wherein said image reconstruction means, said image write means, said input code write means, said input code readout means and said display image readout means are divided into first and second groups, the first group consisting of said input code write means, said input code readout means and said display image readout means, the second group consisting of said image reconstruction means and said image write means,wherein access requests from the first group are given a highest priority and treated by a polling method among them,wherein access requests from the second group are given lower priorities and treated by a priority order method among them.