In the receipt and processing of digitized television transmissions, a method of covering up errors from dropouts by using the redundancy in most adjacent-frame image information. Note: Video images are frequently nearly identical from frame to frame. Adjacent video lines frequently have almost the same detail. It becomes possible, therefore, when a "burst error" involving the modification or loss of many recorded bits occurs, to determine (from adjacent image segments) a most probable substitution. Such substitutions, when infrequent and supported by the image redundancy, are often accepted by the viewers as "correct. " (This is a degree of freedom in image data recovery that is obviously not utilized when recording scientific and financial data. ) The additional information needed by the algorithm for decision and substitution is usually provided by a data-storage cache established during reproduction.