US Patent No: 5,774,458

Number of patents in Portfolio can not be more than 2000

Multiplex amplifiers for two-way communications in a full-service network

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Abstract

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The present invention is a novel apparatus for amplifying upstream and downstream signals, the signals comprising different portions of a communications spectrum and wherein at least two portions require amplification in opposing upstream and downstream directions. The apparatus comprises: an upstream port wherein upstream signals are input into the apparatus; a downstream port wherein downstream signals are input into the apparatus; a first stage connected to the upstream and the downstream ports, the first stage filtering out a first portion of the spectrum and passing the first portion between the upstream and downstream ports, the first stage comprising a first pair of first stage filters for filtering the first portion from the upstream and the downstream signals and a second pair of first stage filters for passing the remaining spectrum; a second stage connected to the second pair of first stage filters, the second stage filtering out a second and a third portion from the remaining spectrum; the second stage comprising a first pair of second stage filters for filtering the second portion and a second pair of second stage filters for filtering the third portion; wherein the first stage and the second stage are substantially electrically isolated.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TIME WARNER CABLE, A DIVISION OF TIME WARNER ENTERTAINMENT COMPANY, L.P.STAMFORD, CT39
TIME WARNER CABLE ENTERPRISES LLCNEW YORK, NY336
TIME WARNER ENTERTAINMENT COMPANY, L.P., D/B/A TIME WARNER CABLESTAMFORD, CT12

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Williamson, Louis D Denver, CO 41 607

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ARRIS INTERNATIONAL, INC. (1)
* 5,425,027 Wide area fiber and TV cable fast packet cell network 159 1993
 
MTV NETWORKS NETWORKS ON CAMPUS INC. (1)
* 5,423,555 Interactive television and video game system 58 1993
 
MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC. (1)
* 5,455,825 Tag-based scheduling system for digital communication switch 97 1994
 
Zenith Electronics Corporation (1)
* 4,553,161 Upstream data packet time slot synchronization with downstream VBI for two-way CATV system 73 1984
 
ANTEC CORPORATION (1)
* 5,426,699 Method and apparatus for digitizing a scrambled analog video signal 61 1993
 
ACTIVEVIDEO NETWORKS, INC. (4)
* 5,093,718 Interactive home information system 432 1990
* 5,220,420 Interactive home information system for distributing compressed television programming 331 1991
* 5,361,091 Interactive home information system for distributing video picture information to television viewers over a fiber optic telephone system 191 1992
* 5,442,700 Scrambling method 56 1994
 
Broadband Technologies, Inc. (1)
* 4,530,008 Secured communications system 116 1984
 
NEC CORPORATION (1)
* 5,455,820 Output-buffer switch for asynchronous transfer mode 108 1994
 
NIPPON CARBIDE KOGYO KABUSHIKI KAISHA (1)
* 5,225,267 Laminated resin film having a metallic appearance 21 1991
 
Zing Systems, L.P. (1)
* 5,343,239 Transaction based interactive television system 420 1991
 
Texscan Corporation (1)
* 4,823,386 Addressable subscriber cable television system 83 1987
 
INTELETEXT SYSTEMS, INC. (1)
* 5,412,720 Interactive home information system 341 1992
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
* 5,422,674 Remote display of an image by transmitting compressed video frames representing background and overlay portions thereof 112 1993
 
AT&T IPM CORP. (2)
* 5,452,297 Access switches for large ATM networks 238 1993
* 5,455,701 Packet switching apparatus using pipeline controller 44 1994
 
LSI LOGIC CORPORATION (1)
* 5,446,726 Error detection and correction apparatus for an asynchronous transfer mode (ATM) network device 120 1993
 
CISCO TECHNOLOGY, INC. (3)
* 5,390,337 Combination surge and diplex filter for CATV distribution systems 31 1992
* 5,357,276 Method of providing video on demand with VCR like functions 726 1992
* 5,394,394 Message header classifier 126 1993
 
ERICSSON GE MOBILE COMMUNICATIONS INC. (1)
* 5,327,580 Full duplex RF repeater/base station providing microprocessor-controlled simultaneous CTCSS tone encode/decode 13 1993
 
SOUND VIEW INNOVATIONS, LLC (2)
* 5,453,979 Method and apparatus for generating route information for asynchronous transfer mode cell processing 57 1994
* 5,459,722 Asynchronous transfer mode (ATM) transport of voice-band signals 92 1994
 
MOTOROLA, INC. (1)
* 5,231,629 Full-duplex communication system 27 1990
 
INTERACTIVE NETWORKS, INC. (1)
* 4,592,546 Game of skill playable by remote participants in conjunction with a live event 429 1984
 
DETA TECHNOLOGY DEVELOPMENT LLC (1)
* 5,421,031 Program transmission optimisation 130 1993
 
NORTON GARFINKLE (1)
* 5,400,402 System for limiting use of down-loaded video-on-demand data 115 1993
 
CILSTAR RESEARCH LLC (2)
* 5,311,423 Schedule management method 202 1991
* 5,383,112 Inventory management method 70 1991
 
GTE LABORATORIES INCORPORATED (1)
* 5,046,090 Recorded medium for video control system 106 1990
 
VERIZON LABORATORIES INC. (2)
* 4,991,208 Video control system having session encryption key 68 1990
* 5,168,353 Video distribution system allowing viewer access to time staggered indentical prerecorded programs 166 1990
 
MACROVISION CORPORATION (1)
* 4,506,387 Programming-on-demand cable system and method 411 1983
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
COX COMMUNICATIONS, INC. (1)
8,493,986 Service gateways for providing broadband communication 1 2010
 
CISCO TECHNOLOGY, INC. (1)
* 6,348,837 Bi-directional amplifier having a single gain block for amplifying both forward and reverse signals 31 2000
 
CIENA CORPORATION (7)
7,146,630 Broadband system with intelligent network devices 22 2001
7,139,247 Broadband system with topology discovery 21 2001
7,072,360 Network architecture for intelligent network elements 20 2001
7,027,394 Broadband system with traffic policing and transmission scheduling 26 2001
6,948,000 System and method for mapping end user identifiers to access device identifiers 14 2001
7,835,379 Network architecture for intelligent network elements 2 2005
8,184,643 Device, system, and method for transporting data using combined broadband and legacy network infrastructures 0 2005
 
XTEND NETWORKS LTD. (6)
7,716,711 Television multiplexing and transmission system and method 0 2000
7,209,497 System and method for spectral node splitting in a hybrid fiber optic-coaxial cable network 14 2001
7,138,886 Wideband CATV signal splitter device 17 2002
* 7,748,023 Device, system and method for connecting a subscriber device to a wideband distribution network 21 2005
7,616,890 System, device and method of expanding the operational bandwidth of a communication infrastructure 2 2005
* 7,904,932 Wideband node in a CATV network 1 2008
* Cited By Examiner