Motion vector detecting circuit

Details Motion vector detecting circuit Motion vector detecting circuit

1996-03-18

1996-12-03

Chin, Tommy P.

Television

Image signal processing circuitry specific to television

Motion vector generation

348416, H04N 732, H04N 730

Patent

active

055813097

ABSTRACT:
Correlated values at respective sampling points are found by a correlated value operating circuit on the basis of image data corresponding to each of sampling points in each of small areas in the present field and image data corresponding to a typical point in the corresponding small area in the preceding field which is stored in typical point data storing circuit. The correlated values which are found by the correlated value operating circuit are sent to an accumulating circuit and an average value calculating circuit. In the accumulating circuit, the correlated values at the sampling points which are the same in displacement from each of the typical points between the small areas in each of motion vector detecting areas are accumulated. In the average value calculating circuit, the total of the correlated values at all the sampling points in each of the motion vector detecting areas is calculated for each motion vector detecting area, and each of the results of the calculation is divided by the total number of sampling points in one of the small areas, thereby to find the average value of values obtained by accumulating the correlated values for each motion vector detecting area.

REFERENCES:
patent: 4884136 (1989-11-01), Ninomiya et al.
patent: 5099323 (1992-03-01), Morimura et al.
patent: 5128750 (1992-07-01), Katagiri et al.
patent: 5157732 (1992-10-01), Ishii et al.
patent: 5172226 (1992-12-01), Morimura et al.
patent: 5204741 (1993-04-01), Sakaguchi

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