Apparatus for compensating a movement of a picture of television

Details Apparatus for compensating a movement of a picture of television Apparatus for compensating a movement of a picture of television

1986-07-25

1988-03-15

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358136, 358105, 358 12, H04N 701, H04N 712

Patent

active

047316519

ABSTRACT:
Image movement correction is provided in a field conversion television system by deriving simultaneously two fields of a selected number of lines from an original single field and vertically shifting one of the derived fields by 0.5 lines. A movement vector is determined for each field and movement correction is performed based on a current field and a preceding field, in the case of a moving object in the image. If no moving object is present linear approximation is employed to correct for motion caused by the field number conversion. Two memory systems are provided for the two simultaneous fields and also to selectively obtain specific horizontal lines of the current and preceding fields, relative to both simultaneous derived fields. Ultimate selection of a field for display is based upon the detected movement vector.

REFERENCES:
patent: 4272787 (1981-06-01), Michael et al.
patent: 4663665 (1987-05-01), Tanaka et al.
patent: 4668987 (1987-05-01), Matsuda et al.

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