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To: John Rieman who wrote (35256)	8/18/1998 11:02:00 AM
From: BillyG	Respond to of 50808

Intel has its own digital video plans... why am I not surprised? But who would buy a proprietary digital video system?? Self-encoded deltas for digital video data transmission (Assignee -- Intel Corporation) August 18, 1998 U.S. Patents via NewsEdge Corporation : Abstract: Digital video data is transmitted by sending significant pixel data differences, column by column, within the same frame rather than differences between corresponding pixel data of adjacent frames; a "no change" signal is transmitted when a difference between corresponding pixel data of adjacent frames is not significant (i.e. less than a fixed minimum threshold value). This method eliminates the necessity of storing a previous frame's data at the receiver while computing the subsequent frame's data. The technique also eliminates "bleed-through" artifacts sometimes experienced in the prior art during scene transitions. Ex Claim Text: A method for encoding image signals, comprising the steps of: (a) generating interframe differences between a region of a current frame and a corresponding region of a reference frame; (b) selecting one of two encoding modes for the region based on the interframe differences, wherein: a no-change encoding mode is selected if the interframe differences are less than a threshold value; and an intra encoding mode is selected if the interframe differences are not less than the threshold value; and (c) applying the selected encoding mode to encode the region, wherein: under the no-change encoding mode, the region is always encoded as a no-change value indicating that a decoded region corresponding to the region is identical to the corresponding region of the reference frame; and under the intra encoding mode, the region is always encoded using intraframe encoding. Patent Number: 5793428 Issue Date: 1998 08 11 If you would like to purchase a copy of this patent, please call MicroPatent at 800-648-6787. Inventor(s): Coelho, Rohan G. F. [Copyright 1998, MicroPatent Publications]