Multiplex communications – Wide area network – Packet switching
Patent
1994-04-05
1996-09-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
348 10, H04J 400
Patent
active
055530648
ABSTRACT:
A high speed bidirectional cable transmission system for CATV and other television systems includes unidirectional transmission of video signals from a head end unit to a plurality of transceivers or subscribers connected to a transmission line. The head end unit encodes voice data using QPSK encoding and time division multiplexing of the encoded data in a plurality of frequency bands to the subscribers. Each subscriber attached to the cable for receiving continuous transmission of voice and video data is assigned an identification number and at least one voice channel for selectively accessing data. Each subscriber includes a transmitter for transmitting voice data on the cable to the head end unit using time division multiple access transmission of bursts of data in a plurality of frequency bands.
REFERENCES:
patent: Re32327 (1987-01-01), Biba et al.
patent: 4498169 (1985-02-01), Rozmus
patent: 5084903 (1992-01-01), McNamara et al.
patent: 5157491 (1992-10-01), Kassatly
patent: 5255267 (1993-10-01), Hansen et al.
patent: 5272700 (1993-12-01), Hansen et al.
patent: 5351234 (1994-09-01), Beierle et al.
Stanford Telecom, ASIC Custom Products Division Brochure entitled "Block Phase Estimator STEL-2211", Oct. 19, 1993.
Stanford Telecom, ASIC Custom Products Division Brochure entitled "Dual 64-TAP, 11 Mcps Digital Matched Filter STEL 3340", Jul., 1993.
Stanford Telecom, ASIC Custom Products Division Brochure entitled "32-Bit Resolution CMOs Phase and Frequency Modulated Numerically Controlled Oscillator STEL-1177", Jun., 1993.
Stanford Telecom, ASIC Custom Products Division Brochure entitled "Introduction to Direct Digital Synthesis", Jun., 1991.
Lyford et al., "Telephony over cable: CISN and CLC-500", Communications Technology 54: 46, 70, 72, 73 (Dec. 1993).
Digital Communications, Fundamentals and Applications, Bernard Sklar, 1988, pp. 460-464.
Graham Hatch
Paff Thomas M.
Olms Douglas W.
Stanford Telecommunications, Inc.
Ton Dang
Woodward Henry K.
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