Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-04-27
1990-06-12
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358214, H04N 701
Patent
active
049337599
ABSTRACT:
Motion detection is based on picture signal value comparisons between picture elements (P) in consecutive, interlaced television pictures (n-2, n-1), (n, n+1), (n+2, N+3), motion or no motion, respectively, being determined in dependence on the fact whether comparison results exceed or do not exceed a threshold value. Changes in picture information between movie pictures (MP1, MP2, MP3) can negatively influence the telecine television motion detection if they make use of a preceding and a subsequent television picture. To prevent this, an instantaneous picture element (P1) in a first field (n) of a television picture (n, n+1) is compared with a number (P4, P5, P6, P7) of surrounding picture elements in a second field (n+1) and an instantaneous picture element (P11) in the second field N+1) is compared with a number (P14, P15, P16, P17) of surrounding picture elements in the first field (n).
REFERENCES:
patent: 4288815 (1981-09-01), Miles
patent: 4607281 (1986-08-01), Starck
patent: 4633293 (1987-12-01), Powers
patent: 4672442 (1987-06-01), Yamaguchi et al.
patent: 4680638 (1987-07-01), Childs
Van Der Meer Jan
Vreeswijk Franciscus W. P.
Goodman Edward W.
Groody James J.
Kostak Victor R.
U.S. Philips Corporation
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