Device for automatically recording, reproducing and translating, a magnetic transducer

Claim 1

An automatic device for recording, reproducing and translating said device being of the type using magnetic rectangular cards having visible horizontal lines of writing on their front surfaces which are readable from left to right, and a magnetic coating on their rear surfaces to support mangetic tracks traverse alternately from left to right and from right to left by a movable magnetic head, a skipping mechanism for producing relative displacement between said cards and device to permit passage from one line to the next, the improvement according to which each line of writing on the front surface corresponds to two tracks on the rear surface of each card, namely an upper track and a lower track, each upper track of a line is traversed by said head in a direction opposite to that of the upper track of the preceding line and that each lower track is traversed in a direction opposite to the direction of travel over the upper track of the corresponding line, said device being arranged to permit the choice between four different patterns of travel the first corresponding to the alternate travel along the upper tracks, the second corresponding to the alternate travel along the lower tracks, the third corresponding to the alternate travel along the upper track of a first line, followed by the lower track of the same line, the lower track of the next line, and finally the upper track of the next line, and the fourth method of exploration corresponding to the exploration of an upper track of a first line, then the lower track of the same line, then an inactive return to the other end of the track to subsequently traverse the upper track of the following line and the lower track of the same following line, and so on.