Patent ID: 8098331

Claim:
A video-data processing apparatus for achieving edge smoothing, comprising: a synthesizing unit which synthesizes different images by allocating video data items representing the different images on a screen, thereby generating a main synthesized video signal; a flag-inserting unit which inserts ID flags into the video data items, respectively, each ID flag identifying one video data item; an image-edge processing unit which includes a plurality of delay circuits for delaying the main synthesized video signal, which outputs a reference synthesized video signal, and which selects and outputs a plurality of edge-smoothing synthesized video signals that precede and follow in phase the reference synthesized video signal, in accordance with an edge-processing control signal; a flag decoder which discriminates the ID flags, and generates the edge-processing control signal to prevent the edge-smoothing synthesized video signals for the different images being processed together, and generates an edge-smoothing-parameter selecting signal in accordance with the ID flags; and an edge-component extracting unit which performs an operation on the reference synthesized video signal and the edge-smoothing synthesized video signals, thereby generating edge-smoothing components, and which adjusts the edge-smoothing components with the parameters based on the edge-smoothing-parameter selecting signal.