Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-07-19
1993-04-20
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358141, H04N 701
Patent
active
052047458
ABSTRACT:
On the transmission side, a delay unit, an adder, and a subtracter obtain an interframe sum output by calculating, in units of two frames, an interframe average sum of progressive scanning signals each having N scanning lines per frame, and an interframe difference output by calculating, in units of two frames, an interframe average difference related to moving image data. The interframe sum output is band-limited to a band which can be transmitted with a conventional scheme by switching, time expansion, vertical filtering, and first scanning line count conversion, and converted into M scanning lines per frame. The interframe difference output is band-limited to a band effective for resolution improvement of a moving image in a receiver of a conventional scheme by switching, time expansion, vertical filtering, horizontal filtering, and second scanning line count conversion, and converted into M scanning lines per frame. Outputs obtained by first and second scanning line count conversions are input to a sum arithmetic means to generate a first frame signal, and input to a difference arithmetic means to generate a second frame signal. The first and second frame signals are transmitted as an interlace scanning signal of M scanning lines per frame for a central portion thereof.
REFERENCES:
patent: 5068728 (1991-11-01), Macovski
patent: 5084765 (1992-01-01), Morita et al.
Kawai et al., "A High Performance EDTV System", International Conference on Consumer Electronics, Jun. 6, 1990, IEEE, New York, US.
Ono, "HDTV and Today's Broadcasting World", Better Video Images, Feb. 3, 1989, SMPTE, White Plains, US pp. 334 and 337.
Sugimori et al., "An NTSC-Compatible Wide Aspect Advanced Television System", HDTV 90, Fourth International Colloquium on Advanced Televison Systems, Jun. 1990, CBC Engineering, Montreal, Canada.
Schreiber et al., "Single-Channel HDTY Systems, Compatible and Noncompatible", Signal Processing of HDTV, Feb. 29, 1988, Elsevier Science Publishers, B.V., Amsterdam.
ITEJ Technical Report vol. 14, No. 28 pp. 1-6' CE'90-19, BCS'90-25; K. Kawai, S. Yasuki, A. Hirota, and K. Sato; May, 1990.
Kawai Kiyoyuki
Yasuki Seijiro
Kabushiki Kaisha Toshiba
Kostak Victor R.
Nippon Television Network Corp.
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