Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-06-07
1992-12-01
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 11, H04N 701
Patent
active
051683580
ABSTRACT:
A video signal converting apparatus includes: an interpolating circuit for interpolating a non-sampling point from sampling points in a field for restoring an HDTV band-compressed by offset sub-sampling; a first delay element for delaying the interpolated signal by one field period and a second delay element for delaying an output of the first delay element by one field; a median-value selector for selecting a median-value signal from signals in three adjacent fields from the input and output of the two delay elements, and an adder for averaging the output of the first delay element and an output of the median-value selector. Alternatively, the first and second delay elements maybe disposed before the interpolating circuit rather than after the interpolating circuit. Furthermore, a time-access conversion circuit maybe disposed either before the interpolating circuit or after the adder.
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patent: 4989090 (1991-01-01), Campbell et al.
patent: 5001563 (1991-03-01), Doyle et al.
"MUSE/NTSC Converter", Masami Itoga et al., IEEE Transactions on Consumer Electronics, vol. 35, No. 3, Aug. 1989, pp. 142-151.
"MUSE/NTSC Converter", Hiroshi Ito et al., ITEJ Technical Report, vol. 14, No. 8, pp. 13-18, Jan. 1990.
Ishizu Atsushi
Seki Yoshio
Tokoi Masaki
Kostak Victor R.
Matsushita Electric - Industrial Co., Ltd.
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