SYSTEM AND METHOD FOR WRITING PILOT DATA INTERSPERSED WITH USER DATA FOR ESTIMATING DISTURBANCE EXPERIENCED BY USER DATA

摘要

A system including a write module to write pilot data at predetermined locations in a page of memory cells that are interspersed with user data in the page. The pilot data has a first predetermined pattern and provides an indication of a disturbance experienced by the user data due to noise and a read, write, or erase operation performed on the page. A read module reads data from the predetermined locations subsequent to writing the pilot data. A signal processing module compares the data read from the predetermined locations with the pilot data and estimates, based on the comparison of the data read from the predetermined locations in the page with the pilot data, and the first predetermined pattern of the pilot data, the disturbance experienced by the user data due to the noise and the read, write, or erase operation performed on the page.

主权项

1. A system comprising:
a write module configured to
write pilot data at one or more predetermined locations in a page of memory cells, wherein the one or more predetermined locations at which the pilot data is written are interspersed with user data in the page of memory cells;wherein the pilot data has a first predetermined pattern; andwherein the pilot data provides an indication of a disturbance experienced by the user data due to one or more of (i) noise and (ii) a read, write, or erase operation performed on the page of memory cells; a read module configured to, subsequent to the write module writing the pilot data at the one or more predetermined locations in the page of memory cells, read data from the one or more predetermined locations in the page of memory cells; and a signal processing module configured to
compare the data read from the one or more predetermined locations in the page of memory cells with the pilot data, andestimate, based at least in part on (i) the comparison of the data read from the one or more predetermined locations in the page of memory cells with the pilot data, and (ii) the first predetermined pattern of the pilot data, the disturbance experienced by the user data due to one or more of (i) the noise and (ii) the read, write, or erase operation performed on the page of memory cells.