Abstract: Signal delaying means, included in the luminance channel of a color television receiver, are responsive to the television video signal processed in the receiver. A portion of the signal delaying means serves to equalize the time delays of signals processed in the chrominance and the luminance channels of the receiver. A plurality of differently delayed video signals are developed at signal coupling means associated with the signal delaying means. At least two of the delayed video signals, spaced apart in time by a predetermined interval inversely related to a frequency at which it is desired to relatively attenuate the video signals, are combined to determine the peaking characteristics of the luminance channel. At least one other of the delayed video signals is used to produce a signal to control the bandwidth characteristics of the luminance channel.

Abstract: A single frame color encoding/decoding system for video cassette or film chain applications is disclosed which requires neither an unusually stable transport mechanism, nor a color television camera in the playback system. The color content of the scene modulates two high frequency (e.g., 1,000 lpi) spatial carriers in the encoded transparency arranged in quadrature. A monochromatic light source projects, a seriatim, a set of transparencies. A grating is rigidly fixed to the frame of a scanner adjacent to the transparency. The grating consists of a superposition of two unmodulated low frequency (e.g., 300 and 400 lpi) spatial carriers also oriented in quadrature. The color content of the scene is optically transferred from the transparency onto relatively stable and low frequency spatial carriers of the grating. A focusing lens, situated along the optical path, obtains a diffraction pattern of the product of the transparency and the grating in the Fourier transform plane.