ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,726,389, issued on Sept. 1, was assigned to Axonne Inc. (Sunnyvale, Calif.).

"Pulse amplitude modulation with bounded disparity" was invented by William Lo (Cupertino, Calif.) and Saman Behtash (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A communications device includes a mapping module mapping a plurality of n-bit signals to a plurality of (n+1)/2 symbols using a first or second set of symbols having a positive or negative disparity. An encoder a) selects the first set of symbols or the second set of symbols as a next symbol set of the mapping module; b) encodes a first one of the plurality of n-bit signals using the next symbol s...