MOVING PICTURE COMMUNICATION DEVICE, MOVING PICTURE COMMUNICATION SYSTEM, AND MOVING PICTURE COMMUNICATION METHOD

摘要

There are provided a moving picture communication device and a gateway capable of suppressing or limiting image quality deterioration as well as a moving picture communication system including them. Control information (141) is transmitted from a moving picture reception/decoding device (2) to a moving picture encoding/transmission device (3) at a predetermined time interval. The moving picture encoding/transmission device (3) performs encoding at the in-frame encoding mode according to the control information (141), thereby suppressing propagation of image deterioration caused by a transmission error to a subsequent frame and performs image refresh operation at a predetermined interval. The moving picture encoding/transmission device (3) performs the image refresh operation at a predetermined interval so as to recover image deterioration when the control information (141) is received even if erroneous recognition has occurred, i.e., normal decoding is recognized in spite of that the image deterioration has been caused by a transmission error.