Device for multiplexing video signals

DETAILED DESCRIPTION This invention overcomes the disadvantages of the prior art by providing a system that converts randomly written display information into a television format suitable for recording on a standard television tape recorder and enables the recording and playback of a multiplicity of television formatted sources closely synchronized in time on one standard video tape recorder.
Since recordings of two or more distinct scenes are wanted, a group of pictures for each scene are made in rapid succession, each picture for a particular scene will record the position of the various parts of the subject at the moment of exposure, and the series of pictures will represent successive phases in the movement of the different parts of the subject.
Then, if these same pictures are viewed or projected in the order in which they were made and with sufficient rapidity so that the human eye will merge the information contained in the various pictures into one another, the human viewer will be enabled to believe that he is seeing the various pictures in motion.
The recording of the two or more scenes are performed in such a manner that when the recordings are played back for viewing purposes, the two recordings are time synchronized.
Thus, when one views the recordings, the viewer will believe that he sees the events in the two or more simultaneous scenes that were recorded in the order in which the events of the scenes took place.
This time synchronization is maintained during any sequence of the playback mode and is also maintained during the fast forward, stop and rewind functions of the recorder.
The foregoing system will separately record the two or more simultaneous scenes as they are taking place by recording the alternate frames per scene.
Thereupon, the recorded frames from the scenes will be multiplexed.
One complete frame (consisting of two fields) per scene will be recorded before the multiplexer selects the frame to be recorded from the other scene.
All of the odd frames from the first scene will be recorded and all of the even frames from the second scene will be recorded