Patent ID: 7734982
Filing Date: 2010-06-08
Classification: H04L

Abstract:
1. A method for indicating to a target device the presence of uncorrectable errors in transmitted data, the method comprising the steps of: receiving first data comprising a plurality of input vectors, which includes a primary input vector and a set of secondary input vectors; encoding the set of secondary input vectors using an error correcting code to generate a set of encoded secondary input vectors; determining a quality metric indication associated with the first data; detecting uncorrectable errors in the first data based on the quality metric indication; based on detecting the uncorrectable errors in the first data, substituting a predetermined codeword for the primary input vector encoded using a non-perfect code, and substituting a predetermined input vector for the primary input vector; modulating the set of encoded secondary input vectors using the predetermined input vector to generate a modulated set of encoded secondary input vectors; and transmitting as second data the predetermined codeword and the modulated set of encoded secondary input vectors to the target device, wherein the substituting step creates a first number of errors that is detected by the target device as uncorrectable errors in the transmitted second data.