Patent ID: 8493783

Claim:
A method for data storage, comprising: storing data in a group of analog memory cells by writing respective storage values into the memory cells in the group; reading one or more of the memory cells in the group using a first readout operation that senses the memory cells with a first sense time; reading at least one of the memory cells in the group using a second readout operation that senses the memory cells with a second sense time, wherein the second sense time is longer than the first sense time; and reconstructing the data stored in the group of memory cells based on readout results of the first and second readout operations; wherein the memory cells in the group are coupled to respective bit lines, wherein reading using the first readout operation comprises charging the bit lines and measuring a discharge of the bit lines with the first sense time, and wherein reading using the second readout operation comprises measuring the discharge of the bit lines with the second sense time without re-charging the bit lines.