Western Digital Technologies, Inc.

Seagate Technology Incorporated

Maxtor Corporation

Bernie Rub

James Fitzpatrick

Henry Chin

Richard David Barndt

Niranjay Ravindran

Ravi J Kumar

Mostafa El Gamal

Ara Patapoutian

John J McEwen, Legal Representative

Storage device programming methods, systems and devices are described. A method may generate a mapping of data based on a set of data, the mapping of data including a first mapped data and a second mapped data. The method may include performing a first programming operation to write, in a first mode, the first mapped data to the memory device. The method may include storing the second mapped data to a cache. The method may include generating a second set of data, based on an inverse mapping of the mapping of data including the second mapped data from the cache and the first mapped data from the memory device, for writing, in a second mode, to the memory device, wherein the second set of data includes the set of data, and the first mode and the second mode correspond to different modes of writing to the memory device.

Mapping for multi-state programming of memory devices

Various embodiments of the present disclosure are generally directed to the accessing of data in a memory, such as but not limited to a flash memory array. In accordance with some embodiments, a transfer command is received to transfer selected data between a control module and a memory module. The transfer command specifies a target address in the memory module and a sense threshold vector associated with the selected data. The sense threshold vector in the received transfer command is used to sense a programmed state of at least one solid-state memory cell at the target address responsive to the received transfer command. The transfer command may be a read or write command.

Transfer command with specified sense threshold vector component

A method for encoding a bit stream to meet a minimum bit transition requirement includes providing uncoded bits, determining whether the uncoded bits meet the minimum bit transition requirement, and replacing selected bits in the uncoded bits with replacement bits that meet the minimum bit transition requirement if the uncoded bits do not meet the minimum bit transition requirement, thereby encoding the uncoded bits into encoded bits that meet the minimum bit transition requirement.

Rate-1 coding for increasing timing information in recording data

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Sudbury, MA, United States of America

Bernie Rub