Title:
PICTURE MOVEMENT DETECTOR
Document Type and Number:
WIPO Patent Application WO/1992/007443
Kind Code:
A1
Abstract:
A picture movement vector is detected as the result of executing correlative operation with a correlative operation circuit (12). In this case, however, the error of 1/2 line is included in the obtained movement vector because the picture signal for executing the correlative operation is vertically displaced by 1/2 line between fields due to interlacing. Therefore, a movement-vector correction circuit (14) corrects the error by adding or subtracting a certain value corresponding to 1/2 line to or from the movement vector obtained by a movement-vector detection circuit (13). Moreover, the above error is corrected by using a vertical interpolation circuit (31) to generate the vertical interpolation signal for picture signals so that either of picture signals for executing the correlative operation is always interpolated in the vertical direction.
Inventors:
KUSAKA HIROYA (JP)
SAKAGUCHI TAKASHI (JP)
SAKAGUCHI TAKASHI (JP)
Application Number:
PCT/JP1991/001446
Publication Date:
April 30, 1992
Filing Date:
October 22, 1991
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
International Classes:
H04N5/14; (IPC1-7): H04N5/232
Foreign References:
| JPH0279584A | 1990-03-20 | |||
| JPS63166369A | 1988-07-09 | |||
| JPS5539420A | 1980-03-19 |
Attorney, Agent or Firm:
Kokaji, Akira (1006, Oaza Kadom, Kadoma-shi Osaka 571, JP)
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