High bit density record and reproduce system with selected frequency band component dispersal

摘要: A method and apparatus is disclosed which avoids bit dropout dropin problems associated in magnetic medium recording by resolving the random multilevel signal inputs characteristic of digital data into a plurality selected frequency band components. These components are each subjected to different time delay relative delays at random. summation circuit sums delayed recorded assigned spaces on single track as slowly varying nonsaturable analogue signal. This thus disperses information content several bits over considerable length rather than confining them sequential cell intervals. Accordingly, any spurious variation for short duration time, normally characterized or dropin, results loss only few cycles compose many with result being that extremely high rates possible virtually no probability dropin. Reproduction binary accomplished through use complementary dispersive circuit. In further nonlimiting embodiment wherein may vary speed record reproduce circuits, an intermediate device employed responsive such variations so continually assure precise spatial separation medium.