Television signal processor for converting the number of scannin

Details Television signal processor for converting the number of scannin Television signal processor for converting the number of scannin

1993-09-07

1995-03-28

Kostak, Victor R.

Television

Format conversion

Line doublers type

348458, H04N 701

Patent

active

054021863

ABSTRACT:
A television signal processor including a device for generating a frame signal, which represents a moving picture, by combining a first field and a second field of an interlace scanning input signal, a filter for separating the frame signal into a vertical low frequency component and a vertical high frequency component, a device for doubling the frame frequency by a frame progressive operation of the vertical low frequency component, a device for converting the vertical high frequency component into a second vertical low frequency component by shifting the frequency of the vertical high frequency component and for converting the vertical high frequency component into a temporal high frequency component by doubling the frequency of the frame signal, and a device for generating a moving picture signal by combining the temporal high frequency component with the double frame-frequency signal produced by the frame progressive operation of the vertical low frequency component. The processor may double the frequencies of the first and second fields, prior to filtering, instead of performing frequency doubling after filtering.

REFERENCES:
patent: 5012326 (1991-04-01), Sakamoto et al.
patent: 5157490 (1992-10-01), Kawai et al.
patent: 5161003 (1992-11-01), Yasuki et al.
patent: 5179443 (1993-01-01), Sugimori et al.
patent: 5182644 (1993-01-01), Kimata et al.
patent: 5204745 (1993-04-01), Kawai et al.
Achiha et al., Motion-Adaptive Enchanced Decoder and Up-Converter for PAL Signals, Broadcast Sessions, Jun. 1991, pp. 197-208.
Sugimori et al., An NTSC-Compatible Wide-Aspect Advanced Television System, HDTV '90 TVHD, Jun. 1990, pp. 5A.6.1-5A.6.14.
Patent Abstracts of Japan, vol. 3, No. 156 (E-161) Dec. 1979 re JP-A-54 138 325.

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