This is an Video Arbitration System (as known as Video Judgement System, Video Assistant Referee (VAR), or Instant Replay System). Which can record high definition videos during the match, and playback them in slow motion. It can be used to arbitrate the dispute during the match.
Multi-angle Video Record
4 channels synchronize video record. Track back or slow motion playback each channel even during the recording.
Recrod Operations of Judge
Each single operation of the judge will be recorded together with the videos. It can be shown during the slow motion playback.