Method and system for improved reconstruction of video images in

Details Method and system for improved reconstruction of video images in Method and system for improved reconstruction of video images in

1984-01-09

1987-01-06

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

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H04N 1118

Patent

active

046350985

ABSTRACT:
A method and system for reconstruction of chroma component segments in a line sequential chroma format television system. Filtering of a received line sequential chroma signal is employed to reconstruct missing chroma components and to attenuate phantom frequency components greater than one half the spatial sampling rate. Digital and analog filters are disclosed for implementation of such post filtering. The luminance component of the line sequential signal is delayed at the transmitter to synchronize the reconstructed chroma segment with its corresponding luminance segment with the use of minimal hardware at the receiver. Horizontal offset chroma sampling is used along with such post filtering to decrease transmission bandwidth requirements without sacrificing horizontal resolution at the receiver.

REFERENCES:
patent: 3781463 (1973-12-01), Van den Bussche
patent: 4051516 (1977-09-01), Weston
patent: 4245235 (1981-01-01), Poetsch
patent: 4335393 (1982-06-01), Pearson
patent: 4516151 (1985-05-01), Stahler
Broder Wendland, High Definition Television Studies on Compatible Basis with Present Standard, Television Technology in the 80s, SMPTE, pp. 151-165, 1981.
G. Tonge et al, Line Sequential Color Transmission and Vertical Filtering in MAC, IBA, GT V1 EVSS 114.

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