Self-encoded deltas for digital video data transmission

Television – Bandwidth reduction system – Data rate reduction

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382236, H04N 724

Patent

active

057934282

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.

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