Rejuvenation of analog memory cells
First Claim
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1. A method for data storage, comprising:
- in a memory that includes multiple analog memory cells fabricated using respective physical media, identifying a group of the memory cells whose physical media have deteriorated over time below a given storage quality level;
applying to the identified group a rejuvenation process, which repairs the physical media of the memory cells in the group and thus causes the physical media of the memory cells in the group to meet the given storage quality level; and
storing data in the rejuvenated group of the memory cells.
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Abstract
A method for data storage in a memory that includes multiple analog memory cells fabricated using respective physical media, includes identifying a group of the memory cells whose physical media have deteriorated over time below a given storage quality level. A rejuvenation process, which causes the physical media of the memory cells in the group to meet the given storage quality level, is applied to the identified group. Data is stored in the rejuvenated group of the memory cells.
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Citations
37 Claims
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1. A method for data storage, comprising:
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in a memory that includes multiple analog memory cells fabricated using respective physical media, identifying a group of the memory cells whose physical media have deteriorated over time below a given storage quality level; applying to the identified group a rejuvenation process, which repairs the physical media of the memory cells in the group and thus causes the physical media of the memory cells in the group to meet the given storage quality level; and storing data in the rejuvenated group of the memory cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Apparatus for data storage, comprising:
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an interface for communicating with a memory that includes multiple analog memory cells fabricated using respective physical media; and circuitry, which is configured to identify a group of the memory cells whose physical media have deteriorated over time below a given storage quality level, to apply to the identified group a rejuvenation process, which repairs the physical media of the memory cells in the group and thus causes the physical media of the memory cells in the group to meet the given storage quality level, and to store data in the rejuvenated group of the memory cells. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method for data storage, comprising:
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operating a memory, which includes a plurality of Flash memory cells and generates internal heat; heating at least some of the Flash memory cells by applying external heat to the memory, in addition to the internal heat generated by the memory; and storing data in the heated Flash memory cells.
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Specification