Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-10-21
1993-11-09
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 11, H04N 546, H04N 701
Patent
active
052607860
ABSTRACT:
A video signal processing circuit used for a non-interlace television comprises an interfield interpolation circuit for carrying out interfield interpolation by using a video signal before one field of an input video signal to output interpolated line video signals corresponding to respective interline positions in one field. An intrafield interpolation circuit carries out intrafield interpolation by using video signals of a plurality of lines of the input video signal to output interpolated line video signals corresponding to respective interline positions in one field. A motion detector detects motion of the input video signal, and a weighting adder implements weighting to an output signal from the interfield interpolation circuit and an output signal from the intrafield interpolation circuit in accordance with a signal from the motion detector to add the weighted output signals. A sequential scan converter carries out conversion into a sequential scanning signal on the basis of the input video signal and an output signal from the weighting adder, and a controller controls at least the interfield interpolation circuit in accordance with a television standard system of the input video signal, thereby making it possible to lessen disturbance, e.g., deterioration in the picture quality, etc., occurring in the interlaced scanning.
REFERENCES:
patent: 3832487 (1974-08-01), de Niet
patent: 4739390 (1988-04-01), Achiha et al.
patent: 4821112 (1989-04-01), Sakamoto et al.
patent: 4870482 (1989-09-01), Yasuki et al.
patent: 4970601 (1990-11-01), Achiba
Patent Abstracts of Japan, vol. 13, No. 86 (E-720) [3434]m Feb. 28, 1989 (Tsuchida).
Kawashima Hiroyuki
Kita Hiroyuki
Obana Shuichi
Tokuhara Masaharu
Burgess Glenton B.
Eslinger Lewis H.
Groody James J.
Maioli Jay H.
Sony Corporation
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