SYSTEM FOR DATA TRANSCEIVING USING RUN-LENGTH CONSTRAINED CONVOLUTIONAL CODES

A method is disclosed for enforcing run-length limit constraints convolutional codes, comprising the steps of providing a desired run length limit constraint, providing a first convolutional code structure 202, processing data with the first convolutional code structure 202 such that convolutional code structure 202 applies a predetermined patterning to the data, evaluating and processing the data in reference to the desired run length limit constraint such that any of the data that is not compliant with the run length limit constraint is altered to become compliant, further processing said the data by a transceiver 206, providing a second convolutional code structure 204, evaluating the further processed data with convolutional code structure 204 in reference to the predetermined patterning such that data likely to have been previously altered is identified, and processing the further processed data with convolutional code structure 204 in reference to said predetermined patterning such that data identified as likely to have been previously altered is excluded.