Richard W. Hamming, Morristown, and Bernard D. Holbrook, Madison, N.J., assignors to Bell Telephone Laboratories, Incorporated, New York, N.Y., a corporation of New York Application January 11, 1950, Serial No. 138,016 20 Claims. (Cl. 177-353)
“This invention relates to permutation code systems and in particular to apparatus for and a method of detecting and correcting errors which impair the accuracy of the output information of such systems.”
