Television – Bandwidth reduction system – Format type
Patent
1992-09-15
1995-08-15
Groody, James J.
Television
Bandwidth reduction system
Format type
348439, 348458, 348913, H04N 712, H04N 701
Patent
active
054424038
ABSTRACT:
A wide-screen TV signal transmission apparatus includes transmitting a wide-screen TV signal generator for generating a wide-screen TV signal source; a scanning line converter for down-converting a wide-screen TV signal with an integer conversion ratio to obtain a conventional TV-compatible signal with upper and lower black bars; a vertical augmentation signal generator for generating a vertical augmentation signal to enhance the vertical resolution at the receiving side of the transmission apparatus; and adder for adding; a conventional TV-compatible signal and a vertical augmentation signal to obtain a conventional TV-compatible composed signal; and a transmitter for transmitting a conventional TV-compatible composed signal. The wide-screen TV signal transmission apparatus includes, in its receiving side a video signal detector for detecting a video signal from a transmitted modulated conventional TV-compatible composed signal to obtain a base-band video signal; a signal separater for separating the base-band video signal into luminance and chrominance signals with upper and lower black bars; a scan-convertor for up-converting the luminance and chrominance signals with upper and lower black bars into luminance and chrominance signals without upper and lower black bars with as integer conversion ratio; a vertical augmentation signal processor for recovering the vertical augmentation signal; an adder for adding luminance and chrominance signals without upper and lower black bars and the vertical augmentation signal to obtain a wide-screen TV signal with a high vertical resolution; and a display device for displaying the wide-screen TV signal with a high vertical resolution.
REFERENCES:
patent: 4394690 (1983-07-01), Kobayashi
patent: 4654696 (1987-03-01), Dayton et al.
patent: 4931855 (1990-06-01), Salvadovini
patent: 4961112 (1990-10-01), Sugimori et al.
patent: 4984078 (1991-01-01), Skinner et al.
patent: 4984081 (1991-01-01), Miyoshi et al.
patent: 4989091 (1991-01-01), Lucas
patent: 5068728 (1991-11-01), Macovski
patent: 5075773 (1991-12-01), Pullen et al.
patent: 5084765 (1992-01-01), Morita et al.
patent: 5097332 (1992-03-01), Faroudja
patent: 5142364 (1992-08-01), Sugimori et al.
"HDTV and Today's Broadcasting World", Yozo Ono, New York, N.Y., (Abstract).
"Better Video Images", 23rd Annual SMPTE Television Conference in San Francisco, Calif., Feb. 3-4, 1989, pp. 313-360.
Inoue Shuji
Kageyama Sadashi
Uwabata Hideyo
Yasumoto Yoshio
Groody James J.
Lee Michael H.
Matsushita Electric - Industrial Co., Ltd.
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