System and method for enhancing data correction capability using error information obtained from demodulation procedures

A signal processing system, comprising:

• a sampling device for converting a continuous signal into a discrete signal transmitting in a waveform;
• a digitizer circuit for converting the discrete signal into a first bit stream, each bit in the first bit stream having a first value, and detecting whether a transition occurs at an interception of the waveform of the discrete signal and a slicing level;
• a detector for determining whether an offset between the transition and a corresponding clock edge provided by the sampling device is significant, and determining that a bit in the first bit stream associated with the transition includes a second value different from the first value of the bit if the offset is significant;
• and
• a demultiplexer for converting a section of the first bit stream into a first modulation code, and converting a section of a second bit stream into a second modulation code, the second bit stream being formed by replacing the first value of the bit in the first bit stream with the second value.

A signal processing system, comprising:

• a sampling device for converting a continuous signal into a discrete signal;
• a partial response maximum likelihood (“PRML”) circuit for selecting a path of the most likelihood among a plurality of maximum likelihood paths each having an evaluation index, and converting the selected path into a first bit stream, each bit of the first bit stream having a first value;
• a detector for determining whether an offset between the evaluation index of the selected path and the evaluation index of one of the unselected paths is significant, and determining that at least one bit in the first bit stream includes a second value different from the first value of the at least one bit if the offset is significant;
• and
• a demultiplexer for converting a section of the first bit stream into a first modulation code, and converting a section of a second bit stream into a second modulation code, the second bit stream being formed by replacing the first value of the at least one bit in the first bit stream with the second value.

A method of signal processing, comprising:

• converting a continuous signal into a discrete signal;
• converting the discrete signal into a first bit stream, each bit in the first bit stream having a first value;
• determining whether at least one bit in the first bit stream includes a second value different from the first value of the at least one bit;
• forming a second bit stream by replacing the first value of the at least one bit in the first bit stream with the second value;
• converting a section of the first bit stream into a first modulation code;
• and
• converting a section of the second bit stream into a second modulation code.

A method of signal processing, comprising:

• converting a continuous signal into a discrete signal transmitting in a waveform;
• converting the discrete signal into a first bit stream, each bit in the first bit stream having a first value;
• detecting whether a transition occurs at an interception of the waveform of the discrete signal and a slicing level;
• determining whether an offset between the transition and a corresponding clock edge provided by the sampling device is significant;
• determining that a bit in the first bit stream associated with the transition includes a second value different from the first value of the bit if the offset is significant;
• forming a second bit stream by replacing the first value of the bit in the first bit stream with the second value;
• converting a section of the first bit stream into a first modulation code;
• and
• converting a section of the second bit stream into a second modulation code.

A method of signal processing, comprising:

• converting a continuous signal into a discrete signal;
• selecting a path of the most likelihood among a plurality of maximum likelihood paths each having an evaluation index;
• converting the selected path into a first bit stream, each bit of the first bit stream having a first value;
• determining whether an offset between the evaluation index of the selected path and the evaluation index of one of the unselected paths is significant;
• determining that at least one bit in the first bit stream includes a second value different from the first value of the at least one bit if the offset is significant;
• forming a second bit stream by replacing the first value of the at least one bit in the first bit stream with the second value;
• converting a section of the first bit stream into a first modulation code;
• and
• converting a section of the second bit stream into a second modulation code.