Data resynchronization employing a plurality of decoders

摘要: Electrical signals recorded on a magnetic medium as indicia represent digital data. Digits of data are encoded pairs (couples) by corresponding pair signals. Successive the serially in sequence; for example, stripes oriented diagonally across tape. During reading, defects medium, or errors transfer, resulting loss synchronization between and digit represented, compensated for. Encoded continuously compared with resynchronization pattern dispersed throughout at regular intervals. When an error is detected, decoded stored two buffers, each storing sets digits from differently chosen pairs. The contents one these buffers thereafter utilized when identifies correct set digits.