Advanced compatible television system with auxiliary carrier

Details Advanced compatible television system with auxiliary carrier Advanced compatible television system with auxiliary carrier

1988-11-30

1989-09-12

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 12, H04N 704

Patent

active

048665215

ABSTRACT:
An NTSC compatible widescreen EDTV system comprises three components: (1) a main component containing center panel information and low frequency side panel information; (2) an auxiliary component containing side panel high frequency information; and (3) an auxiliary component containing extra high frequency luminance detail information. Components (2) and (3) are transmitted as a suppressed carrier dual single sideband signal wherein component (2) occupies one of the upper and lower sidebands exclusively, and component (3) occupies the other sideband exclusively.

REFERENCES:
patent: 4641179 (1987-03-01), LoCicero et al.
"Exploring and Exploiting Subchannels in the NTSC Spectrum"; by Isnardi; SMPTE Journal Jul. 1988, pp. 526-532.
M. A. Isnardi et al., "Encoding for Compatibility and Recoverability in the ACTV System", IEEE Transactions on Broadcasting, vol. BC-33, No. 4, Dec. 1987, pp. 116-123.

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