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A METHOD OF TIME-COMPRESSION AND EXPANSION OF CONTINUOUSLY PASSING INFORMATION
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
A method of time-compression and expansion is described of continuously passing information of telephone type. It is based on rapid reading of slowly recorded information, differing in that, for the purpose of compressing information in portions and eliminating a cumulative time error resulting from asynchronous functioning of the memory material, during compression the passing information is recorded by continuously moving magnetic heads alternately on two stationary circular paths with periodic switching of the recording from the first ring to the second and back again by timing signals, which simultaneously switch the reading and quenching heads, continuously moving at a speed n times greater, correspondingly from the second ring to the first and back again, while during expansion of the compressed information the recording speed is chosen n times greater than the counting and quenching speed. Author
APPROVED FOR PUBLIC RELEASE