Abstract: Methods and apparatus for partitioning a wide-band signal into a plurality of separate narrow-band signals partition the wide-band signal into a low-frequency component and a high-frequency component at least partially above the low-frequency component in the spectrum of the wide-band signal. The low-frequency component is translated into a first narrow-band signal having a band of frequencies at least partially higher than the frequencies of the low-frequency component. The high-frequency component is partitioned into at least two separate further narrow-band signals, each having a bandwidth smaller than the bandwidth of the high-frequency component. Alternatively or additionally, sequential pluralities of elements (samples) of the wide-band signal are distributed over a plurality of groups, and each plurality of elements in each group is separately stored.

Abstract: Methods and apparatus for video information bandwidth compression arrange the video information in image fields and subfields and provide for the subfields a system of coefficients having a first coefficient indicative of average subfield luminance as to any given subfield and including a selected number of further coefficients indicative of spatial content of the particular subfield. The first and further coefficients are updated with the first coefficient being updated for each subfield as to each utilized field and the further coefficients being updated less frequently than the first coefficient. The subject invention is also applicable to bandwidth compression of recurring information other than video signals.