US 4,731,648 AGranted

Interstitial signal generating system

AssigneeRCA Corporation

InventorsFrancis S. Bernard, Chandrakant B. Patel

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Abstract

A system for generating an interstitial signal for a double scanning non-interlaced (progressive scan) television display is disclosed. When no motion is detected in the neighborhood of the interstitial pixel, a pixel generated from pixels in the adjacent fields to that of said interstitial pixel is supplied at the interstitial pixel for further processing. When motion in a relatively downward direction is detected, then a pixel generated from pixels in lower adjacent lines to, and in the same field as, that of the interstitial pixel is supplied as the interstitial pixel. When motion in a relatively upward direction is detected, then a pixel generated from pixels in upper adjacent lines to, and in the same field as, that of the interstitial pixel is supplied as the interstitial pixel.

Claims17

Dependent claims

An interstitial signal generating system, comprising:

an input terminal for receiving a signal representing successive pixels of at least one component of a composite video signal;
an output terminal for producing a signal including an interstitial pixel;
means coupled to said input terminal for producing signals representing first, second and third estimates of said interstitial pixel generated respectively from:
pixels in adjacent fields to that of said interstitial pixel;
pixels in upper adjacent lines to, and in the same field as, that of said interstitial pixel;
and pixels in lower adjacent lines to, and in the same field as, that of said interstitial pixel;
and
means coupled to said input terminal and said estimate producing means for detecting magnitude and direction of image motion in the neighborhood of said interstitial pixel and for selectively providing said first estimate to said output terminal in the absence of image motion, said second estimate to said output terminal if image motion direction is relatively upward, and said third estimate to said output terminal if image motion is relatively downward.

5 more elements

An interstitial signal generating system comprising:

an input terminal for receiving a signal representing successive pixels of at least one component of a composite video signal;
an output terminal for producing a signal including an interstitial pixel in an interstitial line;
first means coupled to said input terminal and responsive to pixels from fields adjacent that of said interstitial pixel for producing a signal representing a first estimate of said interstitial pixel;
second means coupled to said source and responsive to pixels within the same field as that of said interstitial pixel for producing a signal representing a second estimate of said interstitial pixel, and including:
means for producing a signal representing an estimated pixel from upper adjacent lines to that of said interstitial line,
means for producing a signal representing an estimated pixel from lower adjacent lines to that of said interstitial line,
means for detecting the relative direction of motion in the neighborhood of said interstitial pixel, and
means for selectively producing said signal representing said estimated pixel from upper adjacent lines as said second estimate when the direction of motion is relatively upward, and said signal representing said estimated pixel from lower adjacent lines as said second estimate when the direction of motion is relatively downward;
means coupled to said source for detecting motion in the neighborhood of said interstitial pixel;
and
means for selectively coupling said second estimate to said output terminal when motion is detected, and said first estimate to said output terminal otherwise.

8 more elements

Dependencies are inferred from the claim text.