Method and circuitry for monitoring a digital channel
AssigneeTexas Instruments Incorporated
InventorAnthony G. Bessios
Life of this patent
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Abstract
A method for monitoring a digital channel is provided that includes several steps such as receiving an analog input signal corresponding to a digital signal, and equalizing the analog input signal to generate an equalized signal to a predetermined partial response target. The method further includes generating a pseudoternary signal from the equalized signal, and analyzing the pseudoternary signal to detect polarity alternation violations, as well as RLL global and interleave constraint violations.
Claims26
A method for monitoring a digital channel comprising the steps of:
- receiving an analog input signal corresponding to a digital signal;
- equalizing the analog input signal to generate an equalized signal equalized to a predetermined partial response target;
- generating a pseudoternary signal from the equalized signal;
- and
- analyzing the pseudoternary signal and detecting polarity alternation violations,
- wherein analyzing the pseudoternary signal includes counting the number of polarity alternation violations.
A method for monitoring a digital channel and minimizing data errors comprising the steps of:
- receiving an analog signal corresponding to a digital signal;
- equalizing the analog signal to generate an equalized signal;
- generating a pseudoternary signal from the equalized signal;
- analyzing the pseudoternary signal and detecting polarity alternation violations;
- and
- adjusting a circuitry parameter to minimize the number of polarity alternation violations.
A read channel for processing and monitoring an analog signal, the read channel comprising:
- a continuous-time filter operable to filter the analog signal to generate a filtered analog signal;
- a sampler operable to sample the filtered analog signal to generate a discrete analog signal;
- a discrete-time signal equalizer operable to filter the discrete analog signal to generate an equalized signal;
- a symbol-by-symbol detector operable to analyze the equalized signal to generate a pseudoternary signal;
- a violation detector operable to detect polarity alternations present in the pseudoternary signal;
- and
- a sequence detector operable to analyze the equalized signal to generate a corresponding digital data signal.
A read channel for processing and monitoring an analog signal, the read channel comprising:
- a continuous-time filter operable to filter the analog signal to generate a filtered analog signal;
- a sampler operable to sample the filtered analog signal to generate a discrete analog signal;
- a discrete-time signal equalizer operable to filter the discrete analog signal to generate an equalized signal;
- a symbol-by-symbol detector operable to analyze the equalized signal to generate a pseudoternary signal;
- a violation detector operable to detect and count polarity alternations present in the pseudoternary signal;
- and
- a sequence detector operable to analyze the equalized signal to generate a corresponding digital data signal.
Dependencies are inferred from the claim text.