Title:
NON-REGULAR PARITY DISTRIBUTION DETECTION VIA METADATA TAG
Document Type and Number:
WIPO Patent Application WO/2011/119255
Kind Code:
A3
Abstract:
This can relate to non-regular parity distribution of a non-volatile memory ("NVM"), such as flash memory, and detection of the non-regular parity via a metadata tag. For example, each codeword of the NVM can include one or more parity pages that may be distributed at random through the NVM. To identify the page as a parity page, a parity page marker can be included in the metadata of that page. During power-up of the NVM, an address table including the logical-to- physical address mapping of the pages can be created. Pages including a parity page marker, however, can be skipped during the creation of this address table. Additionally, by having two or more parity pages associated with a codeword, an additional layer of protection can be provided for repairing errors in that codeword.
Inventors:
POST DANIEL J (US)
Application Number:
PCT/US2011/023197
Publication Date:
October 11, 2012
Filing Date:
January 31, 2011
Export Citation:
Assignee:
APPLE INC (US)
POST DANIEL J (US)
POST DANIEL J (US)
International Classes:
G06F11/10
Domestic Patent References:
| WO2005043378A2 | 2005-05-12 |
Foreign References:
| US20050091569A1 | 2005-04-28 | |||
| EP0242595A2 | 1987-10-28 |
Attorney, Agent or Firm:
ALDRIDGE, Jeffrey, C. et al. (1177 Avenue of the AmericasNew York, NY, US)
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