HDNTSC signal transmission and reception with time and frequency

Details HDNTSC signal transmission and reception with time and frequency HDNTSC signal transmission and reception with time and frequency

1988-08-31

1991-01-08

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358141, H04N 1106

Patent

active

049840673

ABSTRACT:
A high definition television augmentation channel which provides an efficient use of bandwidth, time expands line differential, panel, and luminance signals. The time expanded line differential signals are arranged in time coincidence and quadrature modulated, as are the corresponding segments of the panel signals. The quadrature modulations providing signals in a common frequency band. Luminance signals are converted to the common frequency band and time multiplexing of the three signals is performed. The resulting time multiplexed signal is then frequency multiplexed with the DSS signals which have been frequency converted to occupy a frequency band contiguous with the common frequency band.

REFERENCES:
patent: 4661850 (1987-04-01), Strolle et al.
patent: 4665427 (1987-05-01), Beckley et al.
patent: 4748496 (1988-05-01), Drury et al.

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