High definition television system compatible with NTSC system

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

1991-09-11

1993-09-21

Razavi, Michael

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 12, 358141, H04N 1120, H04N 1106

Patent

active

052473511

ABSTRACT:
A HDTV system compatible with NTSC is accomplished by employing two channels for transmitting data. Since the channel I has low spatial definition+high time definition and the channel II has high spatial definition+low time definition, associating the channel I with the channel II produces high spatial definition+high time definition.

REFERENCES:
patent: 4564857 (1986-01-01), LoCicero et al.
patent: 4605950 (1986-08-01), Goldberg et al.
patent: 4794456 (1988-12-01), Tsinberg
patent: 4800426 (1989-01-01), Glenn
patent: 4888641 (1989-12-01), Isnardi et al.
patent: 4907069 (1990-03-01), Bretl
patent: 4989091 (1991-01-01), Lucas

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