A Technique for Achieving High Bit Packing Density on Magnetic Tape
John E. Gillis · IEEE Transactions on Electronic Computers · 1964
A technique is described for achieving very high bit packing densities, with low error rates, on magnetic tape. This technique uses envelope orthogonal signals to encode binary data during the recording process, and matched filters are used to recover these signals during playback. The experimental system constructed to evaluate the technique is described and a discussion of the experimental results is presented.