Abstract: A knitted collar for a casual shirt is made resistive to a tendency to curl by forming the collar of a knitted fabric with pockets at opposite end edges to hold stays. Each pocket is formed of two fabric plys defining an internal channel extending alongside the collar edge. The plys are substantially unattached to one another except for a stitch connecting the plys only at an intermediate location. The stay is of a width dimension sufficiently more narrow than the channel for insertion through an open end of the channel and past the stitch to retain the stay within the channel between a closed end of the channel and the stitch.

Abstract: A bandwidth reduction system which encodes images without significant degradation of edge information. A PCM encoded signal, which may be an image generated by the sampling of a video signal or of other format is separated into two channels in which the upper bit plane is processed in one channel by an entropy preserving encoding process and the lower bit planes are processed in the other channel by a nonentropy preserving encoding process. The resultant signals are recombined to reconstitute each sample into a multibit PCM signal with reduced bandwidth which retains significant edge information.