Rca Inc.

Roy M Christensen

Walter G Gibson

A video signal is separated into a broad area luminance signal having attenuated vertical and horizontal detail components and a composite detail signal having horizontal and vertical detail components in a predetermined ratio. The broad area luminance signal is combined with the composite detail signal in desired proportions to provide continuous control of the picture detail from soft to sharp in all directions of reproduced images.

Vertical and horizontal detail signal processor

Systems for uniformly reproducing a sound field surrounding a listener are disclosed utilizing three channels of audio information signals. One channel provides signals representative of total sound pressure (a sum signal) and the two remaining channels provide orthogonal pressure gradients (difference signals) representative of location of sound sources which produce the sound field. FM radio systems utilizing the three channel technique for providing surround stereophonic sound are also described.

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Titusville, NJ, United States of America

Roy M Christensen