ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,952, issued on June 17, was assigned to Entropic Communications LLC (Plano, Texas).
"LDPC code matrices" was invented by Shaw Yuan (San Diego), Zong Liang Wu (San Diego), David Barr (San Jose, Calif.) and Shachar Kons (San Diego).
According to the abstract* released by the U.S. Patent & Trademark Office: "An LDPC parity check matrix includes a systematic portion having a plurality of systematic elements and a parity portion having a plurality of parity elements. The value of each systematic element determines a cyclic shift to be applied to rows of an identity submatrix corresponding to that element. The value of each parity element determines a cyclic shift to be applied to rows...