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
Inventor(s)
Assaf Shappir of Ganey Tikva (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.
