Camera shake correcting device

Details Camera shake correcting device Camera shake correcting device

1992-03-17

1993-05-11

Gellner, Michael L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

354430, 358222, G03B 708, H04N 718

Patent

active

052105598

ABSTRACT:
During a signal inputting period while a dynamic image signal of a present field is input, a movement vector detecting circuit 20 calculates a first movement vector V1 of a present field image with respect to a previous field image with a first accuracy. During a vertical blanking period after the signal inputting period, a second movement vector detecting circuit 30 calculates a second movement V2 according to the first movement vector V1 with a second accuracy higher than the first accuracy. A vector adder 34 composes the movement vectors V1 and V2 to obtain a final movement vector Vf. A second control circuit 71 outputs a reading address corresponding to the final movement vector Vf to a field memory 41, and the field memory 41 outputs an image signal corrected in camera shake. Accordingly, a camera shake correction accuracy is greatly improved without almost increasing a scale of a camera shake correcting circuit constructed as a one-chip circuit.

REFERENCES:
patent: 4673276 (1987-06-01), Yoshida et al.
patent: 4709138 (1987-11-01), Suda et al.
patent: 5012270 (1991-04-01), Sekine et al.
patent: 5099323 (1992-03-01), Morimura et al.
patent: 5138445 (1992-08-01), Ueda

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