Motion vector detection apparatus

Details Motion vector detection apparatus Motion vector detection apparatus

1998-01-08

2000-11-28

Lee, Richard

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

37524024, H04N 732

Patent

active

061544922

ABSTRACT:
In a motion vector detection apparatus, cascade-connected processor elements each calculates the absolute value of the difference between each of a plurality of pixels which compose a picture and a corresponding one of the same number of pixels included in a block, and also performs cumulative addition of the difference absolute values in the block. These operations are performed for each of the blocks within the predetermined search area. A comparative device repeatedly compares the cumulative addition values of two blocks obtained sequentially in the processor element at the final stage, and selects the smaller one of the cumulative addition values. A subtracter compares the smaller cumulative addition value with a setting value. When the smaller cumulative addition value is smaller than the setting value, a control circuit halts the supply of clock signals to the processor elements and the comparison device, so as to halt the entire operations of the apparatus. Consequently, the power consumption can be reduced.

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