Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-01-29
1992-07-28
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 15, 358143, H04N 1112, H04N 706
Patent
active
051344645
ABSTRACT:
A method and apparatus for encoding a television source signal having a first bandwidth, into a frequency multiplexed signal having a narrower bandwidth and comprising a plurality of subcarriers modulated with digital information. Each of said subcarriers has an amplitude, bandwidth and coding characteristic which reflects the relative importance of the digital information provided thereby. The frequency multiplexed signal is suitable for use in a broadcasting environment wherein a conventional television signal is also used and wherein said subcarriers are disposed in frequency, in positions which are least likely to result in interference to or from said conventional signal. The invention also includes a receiver for decoding the frequency multiplexed signal and for providing a high definition display.
REFERENCES:
patent: 4945411 (1990-07-01), Cavallerano et al.
patent: 5006926 (1991-04-01), Tsinberg
patent: 5053860 (1991-10-01), Tsinberg
patent: 5087970 (1992-02-01), Cavallerano et al.
Azadegan Faramarz
Basile Carlo
Bryan David A.
Cavallerano Alan P.
Cugnini Aldo G.
Groody James J.
Marion Michael E.
North American Philips Corporation
Powell Mark R.
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