Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-11-08
1987-08-04
George, Keith E.
Facsimile and static presentation processing
Static presentation processing
Attribute control
455 4, H04N 710
Patent
active
046849815
ABSTRACT:
Digital signals of up to four different modes are produced for transmission over an unused television channel in an existing cable television transmission line. No more bandwidth is required than that normally required by a single existing television channel. The various modes of digital signals all include synchronizing signals and service bit signals which are used to address any of the numerous terminals at the receiving side to control access to the various modes of digital signals transmitted over the single channel. By controlling the transmission of the modes to have constant time intervals, which can be selected based upon different sampling times, high quality audio signals may be transmitted or/and data channels or monaural audio signals, all of which may be transmitted over the single cable television transmission line.
REFERENCES:
patent: 3757225 (1973-09-01), Ulicki
patent: 3997718 (1976-12-01), Ricketts et al.
patent: 4513315 (1985-04-01), Dekker et al.
patent: 4554579 (1985-11-01), Citta
patent: 4591906 (1986-05-01), Morales-Garza et al.
Jonathan H. Stott, "Design Technique for Asynchronous Digital Video and Audio Signals," IEEE Transactions on Communications, vol. Com-26, No. 5, May 1975, pp. 601-610.
Fujita Etsumi
Hideshima Yasuhiro
Toyoshima Masakatsu
Eslinger Lewis H.
George Keith E.
Sinderbrand Alvin
Sony Corporation
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