A DROPOUT BASED ERROR CORRECTION METHOD FOR USE ON DENSITY DIGITAL RECORDING SYSTEMS
AuthorMeeks, Leighton A.
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AbstractHoneywell has developed and reduced to practice, a variation of the check word approach to error detection and correction for use on multi-track parallel high density digital recording systems. Implemented on the Company’s Model HD-96 systems, this method takes advantage of the high degree of correlation of bit errors with tape signal dropout intervals. A signal dropout detector is provided on the reproduce side for each digital data track to replace the check word at the end of each channel encoding frame. This dropout method has the advantage of reducing buffer memory size required to utilize the check word method. In a previous paper*, the results of a tape signal dropout investigation were reported. In this current paper, details considered critical to successful implementation are described. In addition, sample results from production systems are included.
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