13189402

Paragraph Number

276

By comparing read biases of data from each of the channels 604a-n to the known bias, the configuration module 352 can correct data errors that occur due to changes in read voltages for particular channel(s) even without the use of ECC checkbits. Without comparing the read biases of data from the channels 604a-n to the known bias, adjustment of the read voltage thresholds would require a large number of trial-and-error tests adjusting and testing every possible read voltage threshold adjustment for each possible combination of channels 604a-n. By comparing the read biases of data from the channels 604a-n to the known bias, the configuration module 352 can determine exactly which channel 604 to adjust. By determining the direction of deviation for those channels, the configuration module 352 further decreases the search space for the read voltage thresholds for those channels by half.

Added by DJM 3 2021