High definition NTSC compatible television system with increased

Details High definition NTSC compatible television system with increased High definition NTSC compatible television system with increased

1989-07-10

1991-03-12

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358141, H04N 1100, H04N 706

Patent

active

049997017

ABSTRACT:
A system for generating high definition television signals. An augmentation signal is provided for supporting the transmission of additional panel information, increasing the aspect ratio of an NTSC compatible main television signal component. Line differential information, as well as high frequency luminance and high frequency chrominance are transmitted in the augmentation signal super line time interval without frequency interleaving components. The high definition augmentation signal is derived by subsampling the high definition image produced by an HDTV source along the diagonal direction of its two dimensional frequency spectrum. The horizontal frequency bandwidth of the HDTV image is perserved without an objectionable loss of resolution to the human visual system.

REFERENCES:
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patent: 4485401 (1984-11-01), Tan et al.
patent: 4552904 (1987-03-01), van de Polder
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patent: 4628344 (1986-12-01), Glenn
patent: 4631574 (1986-12-01), LaCicero et al.
patent: 4661850 (1987-04-01), Strolle et al.

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