Invention Grant
- Patent Title: Data recovery in a memory system using tracking cells
- Patent Title (中): 使用跟踪单元的存储系统中的数据恢复
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Application No.: US11752024Application Date: 2007-05-22
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Publication No.: US07681094B2Publication Date: 2010-03-16
- Inventor: Daniel C. Guterman , Stephen J. Gross , Shahzad Khalid , Geoffrey S. Gongwer
- Applicant: Daniel C. Guterman , Stephen J. Gross , Shahzad Khalid , Geoffrey S. Gongwer
- Applicant Address: US CA Milpitas
- Assignee: Sandisk Corporation
- Current Assignee: Sandisk Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Vierra Magen Marcus & DeNiro LLP
- Main IPC: G11C29/00
- IPC: G11C29/00 ; G06F13/00

Abstract:
Tracking cells are used in a memory system to improve the read process. The tracking cells can provide an indication of the quality of the data and can be used as part of a data recovery operation if there is an error. The tracking cells provide a means to adjust the read parameters to optimum levels in order to reflect the current conditions of the memory system. Additionally, some memory systems that use multi-state memory cells will apply rotation data schemes to minimize wear. The rotation scheme can be encoded in the tracking cells based on the states of multiple tracking cells, which is decoded upon reading.
Public/Granted literature
- US20070226434A1 DATA RECOVERY IN A MEMORY SYSTEM USING TRACKING CELLS Public/Granted day:2007-09-27
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