Gylicon Assigned Patent

Gylicon Ltd., London, Great Britain, has been assigned a patent (11880588) developed by De Cian, Valentina, Sedico, Italy, for a “SSD device featuring improved decoding.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A method for decoding, in a solid-state storage device, a read symbol encoded with a Q-ary LDPC code defined over a binary-extension Galois field GF(2.sup.r), wherein the read symbol is associated with 2.sup.r LLR values each one denoting a symbol probability indicative that the read symbol was equal to a respective possible symbol, the method comprising: (a) associating, with the read symbol, candidate symbols comprising a number of the possible symbols associated with LLR values indicative of highest symbol probabilities; (b) storing the candidate symbols and the associated LLR values in V2C and V_SUM matrices; (c) based on the V2C matrix, performing a check node update procedure to update the C2V matrix; (d1) determining an updating LLR value for each possible symbol associated with the read symbol; (d2) determining, for the V_SUM matrix, an approximated LLR value for each excluded symbol, said determining being based on the LLR value indicative of the lowest symbol probability, and on an offset LLR value; (d3) updating the LLR values and the approximated LLR values of the V_SUM matrix with the respective LLR updating values; (d4) performing step (a) based on the updated LLR values; (d5) performing steps (d2) to (d4) for the V2C matrix; (d6) performing step (b) for both V2C and V_SUM matrices based on the respective candidate symbols and the associated updated LLR values, thereby obtaining updated V2C and V_SUM matrices; (e) determining an outcome of the decoding attempt provided by the updated V_SUM matrix.”

The patent application was filed on 2022-05-13 (17/663281).