Interactive video distribution systems – Video distribution system with upstream communication – Telephony via television distribution network
Reexamination Certificate
2006-06-27
2006-06-27
Cumming, William D. (Department: 2683)
Interactive video distribution systems
Video distribution system with upstream communication
Telephony via television distribution network
C370S305000, C370S503000, C375S286000
Reexamination Certificate
active
07069577
ABSTRACT:
The communication system includes a hybride fiber/coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber/coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber/coax distribution network. The head end includes head end multicarrier modem for modulating at least downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The head end further includes a controller operatively connected to the head end multicarrier modem for controlling transmission of the downstream telephony information and downstream control data and for controlling receipt of the upstream control data and upstream telephony information. The system further includes service units, each service unit operatively connected to the hybrid fiber/coax distribution network for upstream transmission of telephony and control data in the second frequency bandwidth and for receipt of the downstream control data and telephony in the first frequency bandwidth. Each service unit includes a service unit multicarrier modem for modulating at least the upstream telephony information on at least one carrier orthogonal at the head end terminal to another carrier in the second frequency bandwidth and for demodulating at least downstream telephony information modulated on at least a band of a plurality of orthogonal carriers in the first frequency bandwidth. Each service unit also includes a controller operatively connected to the service unit multicarrier modem for controlling the modulation of and demodulation performed by the service unit multicarrier modem. A method of monitoring communication channels, a distributed loop method for adjusting transmission characteristics to allow for transmission of data in a multi-point to point communication system, a polyphase filter technique for providing ingress protection and a scanning method for identifying frequency bands to be used for transmission by service units are also included. Also provided is a method and apparatus for performing a Fast Fourier Transform (FFT). In one embodiment, a scalable FFT system is built using a novel dual-radix butterfly core.
REFERENCES:
patent: 3742145 (1973-06-01), Clark et al.
patent: 3916379 (1975-10-01), Dulaney et al.
patent: 3934224 (1976-01-01), Dulaney et al.
patent: 4092596 (1978-05-01), Dickinson et al.
patent: 4291403 (1981-09-01), Waddill et al.
patent: 4331974 (1982-05-01), Cogswell et al.
patent: 4387456 (1983-06-01), Creteau
patent: 4393493 (1983-07-01), Edwards
patent: 4395768 (1983-07-01), Goethals et al.
patent: 4397020 (1983-08-01), Howson
patent: 4404589 (1983-09-01), Wright et al.
patent: 4566100 (1986-01-01), Mizuno et al.
patent: 4604745 (1986-08-01), Takasaki et al.
patent: 4679227 (1987-07-01), Hughes-Hartogs
patent: 4710924 (1987-12-01), Chum
patent: 4757495 (1988-07-01), Decker et al.
patent: 4769761 (1988-09-01), Downes et al.
patent: 4809298 (1989-02-01), Sakane et al.
patent: 4858225 (1989-08-01), DeSantis
patent: 4868811 (1989-09-01), Suzuki
patent: 5124980 (1992-06-01), Maki
patent: 5136411 (1992-08-01), Pail et al.
patent: 5153763 (1992-10-01), Pidgeon
patent: 5175817 (1992-12-01), Adams et al.
patent: 5185736 (1993-02-01), Tyrrell et al.
patent: 5185742 (1993-02-01), Bales et al.
patent: 5216697 (1993-06-01), Ohnuki
patent: 5225902 (1993-07-01), McMullan, Jr.
patent: 5255086 (1993-10-01), McMullan, Jr. et al.
patent: 5297136 (1994-03-01), Soprano et al.
patent: 5299192 (1994-03-01), Guo et al.
patent: 5351245 (1994-09-01), Pregont et al.
patent: 5357249 (1994-10-01), Azaren et al.
patent: 5408260 (1995-04-01), Arnon
patent: 5471474 (1995-11-01), Grobicki et al.
patent: 5479447 (1995-12-01), Chow et al.
patent: 5495283 (1996-02-01), Cowe
patent: 5507034 (1996-04-01), Bodin et al.
patent: 5512937 (1996-04-01), Beierle
patent: 5519830 (1996-05-01), Opoczynski
patent: 5528283 (1996-06-01), Burton
patent: 5537443 (1996-07-01), Yoshino et al.
patent: 5541955 (1996-07-01), Jacobsmeyer
patent: 5592470 (1997-01-01), Rudrapatna et al.
patent: 5594726 (1997-01-01), Thompson et al.
patent: 5631846 (1997-05-01), Szurkowski
patent: 5644573 (1997-07-01), Bingham et al.
patent: 5655068 (1997-08-01), Opoczynski
patent: 5666293 (1997-09-01), Metz et al.
patent: 5745837 (1998-04-01), Fuhrmann
patent: 5991308 (1999-11-01), Fuhrmann et al.
patent: 6055242 (2000-04-01), Doshi et al.
patent: 6055268 (2000-04-01), Timm et al.
patent: 6075972 (2000-06-01), Laubach et al.
patent: 6097736 (2000-08-01), Proctor et al.
patent: 2002/0098796 (2002-07-01), Dapper et al.
patent: 2002/0098797 (2002-07-01), Brede et al.
patent: 2002/0098798 (2002-07-01), Solum et al.
patent: 2002/0102937 (2002-08-01), Dapper et al.
patent: 2002/0105950 (2002-08-01), Dapper et al.
patent: 2002/0106060 (2002-08-01), Dapper et al.
patent: 2002/0107979 (2002-08-01), Sarnikowski et al.
patent: 2002/0116719 (2002-08-01), Dapper et al.
patent: 2003/0032390 (2003-02-01), Geile et al.
patent: 2003/0043928 (2003-03-01), Ling et al.
patent: 0 080 782 (1983-06-01), None
patent: 0 162 994 (1985-12-01), None
patent: 0 325 331 (1989-07-01), None
patent: 0 392 723 (1990-10-01), None
patent: 0 399 611 (1990-11-01), None
patent: 0 584 820 (1994-03-01), None
patent: 0 637 181 (1995-02-01), None
patent: 0 647 043 (1995-04-01), None
patent: 2 254 984 (1992-10-01), None
patent: 2 266 433 (1993-10-01), None
patent: 4-25246 (1992-01-01), None
patent: 4-156735 (1992-05-01), None
patent: 05-167632 (1993-07-01), None
patent: 59-063833 (2000-04-01), None
patent: WO 94/29983 (1994-12-01), None
patent: WO 95/34168 (1995-12-01), None
patent: WO 96/10303 (1996-04-01), None
Kim & Stuber, “Hierarchical Wideband Multicarrier CDMA Systems,” Vehicular Technology Conference, 2001, VTC 2001 Fall, IEEE VTS 54th, Oct. 7, 2001.
Litwin, “An Introduction to Multicarrier Modulation,” IEEE Potentials, pp. 36-38, vol. 19, issue 2, Apr. 2000.
Goldberg, L., “Brains and Bandwidth: Fiber Service at Copper Prices”,Electronic Design, 43, 51-60, (Oct. 2, 1995).
Golasa, R.G., et al., “Peformance Monitoring for Digital Radio,”Proceedings of the 1981 IEEE International Conference on Communications, vol. 2, Denver, CO, pp. 35.4.1-35.4.3 (Jun. 14-18, 1981).
Huckett, P., et al., “Error Analysis in Digital Transmission [Fehleranalyse Bei Digitalen Ubertragungssystemen],”Elektronik(Germany), 9, 51-58; Translation (26 pp.), (May 1982).
Newcombe, E.A., et al., “Error Rate Monitoring for Digital Communications,”Proceedings of the IEEE, 70, 805-828, (Aug. 1982).
Ramaswami, V., et al., “Analysis of the Link Error Monitoring Algorithms in the Signaling System No. 7 Protocol,”IEEE, 859-866 (1993).
Woodward, M.E., et al., “Time-Spread Decoding: A Method for the Implementation of Error-Control Algorithms in Fast Digital Transmission Channels Using Slow Microprocessors,”Conference Proceedings, Digital Processing of Signals in Communications, Loughborough University, pp. 119-124 (Apr. 22-26, 1985).
“Combined Use of Collision-Resolution and Collision-Avoidance Media-Access Communication Protocols”,IBM Technical Disclosure Bulletin, 37, 299-301, (Oct. 1994).
Anderson Brian D.
Brede Jeffrey
Elpers Mark D.
Fort Michael J.
Geile Michael J.
Cumming William D.
Fogg and Associates LLC
SDC Telecommunications, Inc.
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