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Apple inc. (20240428877). Identifying unusable memory blocks based on zeros-ones imbalance in memory readouts

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Identifying unusable memory blocks based on zeros-ones imbalance in memory readouts

Organization Name

apple inc.

Inventor(s)

Assaf Shappir of Ganey Tikva (IL)

Ruby Mizrahi of Tel Mond (IL)

Nir Tishbi of Kfar Saba (IL)

Itamar Atiya of Kiryat Tivon (IL)

Identifying unusable memory blocks based on zeros-ones imbalance in memory readouts

This abstract first appeared for US patent application 20240428877 titled 'Identifying unusable memory blocks based on zeros-ones imbalance in memory readouts



Original Abstract Submitted

a storage apparatus includes an interface and storage circuitry. the interface is configured to communicate with a plurality of memory cells organized in multiple memory blocks. the storage circuitry is configured to produce a given readout by reading data from a group of the memory cells in a given memory block, using a given read voltage, to calculate a given zeros-ones imbalance level of the given readout, based on the given zeros-ones imbalance level, to check whether the given readout level is zeros-ones balanced or unbalanced in accordance with a balance criterion, and upon detecting that the given readout is zeros-ones unbalanced, mark the given memory block as suspected of being unusable.

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