公开(公告)号：US20240035018A1

公开(公告)日：2024-02-01

申请号：US17816215

申请日：2022-07-29

Applicant: Seagate Technology LLC

Inventor： Gemma Roselle MENDONSA ,  Walter R. EPPLER

IPC: C12N15/10 ,  C12N15/113

CPC classification number: C12N15/1031 ,  C12N15/113 ,  C12N2310/127 ,  C12N2330/31 ,  G11C11/54

Abstract: Building DNA strands at a high rate that are suitable for data storage. Methods include using DNAzyme and utilizing libraries of pre-prepared oligos. A system for the DNA strand synthesis includes: a DNA symbol library comprising a number of single strand oligo symbols; a DNA linker library comprising a first set of single strand oligo linkers and a second set of single strand oligo linkers; and a DNAzyme library comprising a number of DNAzymes. An S1 end of a first DNAzyme is adapted to join the S1 end of a symbol and an S2 end of the first DNAzyme is adapted to join an S2 end of a first linker, and an S1 end of a second DNAzyme is adapted to join an S1 end of a second linker and an S2 end of the second DNAzyme is adapted to join an S2 end of the symbol.

公开(公告)号：US20230290398A1

公开(公告)日：2023-09-14

申请号：US17694442

申请日：2022-03-14

Applicant: Seagate Technology LLC

Inventor： Walter R. EPPLER ,  Drew Michael MADER

IPC: G11C11/16 ,  H03M1/06

CPC classification number: G11C11/1673 ,  G11C11/1675 ,  G11C11/1677 ,  G11C11/1693 ,  H03M1/0636

Abstract: A method for reducing noise in a read signal due attributable to read element asymmetry provides for transmitting a write signal through a write precompensation circuit that shifts rising edges and falling edges of each of pulse in the write signal by a select magnitude and in opposite directions. After the write signal is encoded on a media, a corresponding read signal is read, with a read element, from the media. The method further provides for transmitting the read signal through a magnetoresistive asymmetry compensation (MRAC) block that is tuned to correct second-order non-linearities characterized by a particular set of distortion signatures. The select magnitude of the waveform shift applied by the write precompensation circuit introduces a non-linear signal characteristic that combines with non-linear signal characteristics introduced by the read element to generate one of the particular distortion signatures that is correctable by the MRAC block.