Image data recording/reproducing apparatus including superimposing function

Claim 1

A video data processing apparatus, comprising: video-picture signal input means for obtaining a video picture signal; message data input means for inputting message data; recording means coupled to both said video-picture signal input means and said message data input means for recording both said video picture signal and said message data on a recording medium; first vertical-flyback-period detecting means for detecting a vertical-flyback-period of said video picture signal obtained by said video-picture signal input means and for producing a first detecting signal; recording control means for controlling a recording operation of said recording means in response to the first detecting signal produced by said first vertical-flyback-period detecting means, so as to record the message data on said recording medium during the vertical flyback period; reproducing means for reproducing the video picture signal the message data recorded on said recording medium; display means for displaying image information based on the video picture signal and the message data; extracting means for extracting message data from the video picture signal and the message data reproduced by said reproducing means; storing means for storing the message data extracted from the video picture signal by said extracting means; coordinate-data input means for inputting coordinate data indicative of a position on said display means; supplying means for supplying the video picture signal reproduced by said reproducing means to said display means; output means coupled to both said storing means and said coordinate-data input means for outputting the message data from said storage means synchronized with the supplying of the video picture signal and coordinated to be displayed on said display means at the position indicated by the coordinate data input from said coordinate-data input means; and synchronizing means for selectively synthesizing the message data output from said storing means by said output means into the video picture signal reproduced by said reproducing means; wherein said display means displays the synthesized message data and video picture signal.