Patent ID: 9477540
Filing Date: 2016-10-25
CPC Classification: G06F,H04L

Claim Text:
1. A multi-stage codeword detector for detecting codewords from read signals received from a multi-level memory device, the multi-stage codeword detector comprising: a first detection stage configured for a coarse detection of a first codeword from a received read signal; a second detection stage configured for a fine detection of a second codeword from the received read signal; a deciding entity configured to decide on using the second detection stage for the received read signal in dependence on a reliability indicator indicating a certain reliability level of the received read signal; and an input buffer for buffering the read signals received from the multi-level memory device; wherein the first detection stage is connected between a first buffer connected to the input buffer and a second buffer connected to the second detection stage, and wherein the first detection stage includes N parallel arranged coarse detection units for coarse detection of N first codewords from N received read signals.