Patent ID: 8416852

Claim:
A video signal coding system for network transmission comprising: a video output apparatus and a signal conversion apparatus, the video output apparatus including a decoding unit configured to decode a compressed video signal encoded by a motion vector coding method, the decoded compressed video signal being a decoded video signal; and a superimposing unit configured to generate a superimposed video signal by superimposing reference control information being output from the decoding unit and containing at least a motion vector on a blanking period of the decoded video signal, the video output apparatus outputting the superimposed video signal; and the signal conversion apparatus including a separating unit configured to separate the reference control information from the blanking period of the superimposed video signal, an encoding unit configured to encode the video signal separated from the reference control information by the separating unit, by the motion vector coding method, and a motion vector converting unit configured to convert the motion vector contained in the reference control information separated by the separating unit into a second motion vector corresponding to the motion vector coding method implemented in the encoding unit, and the signal conversion apparatus performing encoding in the encoding unit using the second motion vector.