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| Number | Title | Issue Date |
| 8082570 | Method and apparatus for a self-terminating signal path Presented are method and apparatus embodiments to terminate an interruptible signal path when the interruptible signal path is unterminated. The apparatus can comprise a signal path from a supplier-side port thru a user-side port, a signal source arranged to provide... | 12/20/2011 |
| 7372872 | System and method for monitoring upstream and downstream transmissions in cable modern system A network monitor includes means for monitoring downstream traffic from a cable modem termination system (CMTS) to a cable modem (CM), means for monitoring upstream traffic from the CM to the CMTS, and means for identifying a data format used by the CMTS and the CM ... | 05/13/2008 |
| 7355963 | Tone allocation in multipoint-to-point communication using orthgonal frequency division multiplexing Systems for tone allocation are provided. In one embodiment, a system comprises: a plurality of remote units and a host including a demodulator. Each remote transmits an upstream OFDM signal using a multiple access scheme to the host using an OFDM waveform. The host... | 04/08/2008 |
| 7352226 | Versatile attenuator A versatile attenuator. The versatile attenuator includes a first mechanism for receiving an input signal. A second mechanism measures the input signal and provides a signal-level indication in response thereto. A third mechanism selectively attenuates the input sig... | 04/01/2008 |
| 7336967 | Method and system for providing load-sensitive bandwidth allocation An approach is provided for managing bandwidth in a data network. Capacity is allocated on a communication channel, which can be utilized for transporting data traffic or support network administrative functions (e.g., ranging), for a terminal to transmit data over ... | 02/26/2008 |
| 7289567 | Apparatus and method for transmitting and receiving data using partial chase combining An apparatus and method for transmitting and receiving data, wherein retransmissions of information can be a different size from the initial transmission. The invention utilizes a partial Chase encoder 306 to truncate or expand data depending on the availabil... | 10/30/2007 |
| 7283479 | Cable TV system or other similar communication system A cable TV system, which is arranged to permit a transmission of signals in the return direction from local networks (10), included in the system, to a head end (11) of the system within a predetermined carrier frequency band, serving for the transmiss... | 10/16/2007 |
| 7283743 | Systems and methods for active monitoring and management of fiber links Systems and methods for actively monitoring and managing the integrity of an optical fiber communications link. The optical fiber link integrity is monitored to guard against intrusions and other security breaches. In one embodiment, a local and a remote active moni... | 10/16/2007 |
| 7272847 | System for return bandwidth minimization using selective sampling In a cable television system a system for supporting SCU return in FTTB-MDU and FTTC/FTTcab configurations. Fiber, baseband transceiver and networking capabilities are shared with data and voice portions of the system for enabling communication from the SCUs to the ... | 09/18/2007 |
| 7254828 | Multiple input data receiver for cable television systems A multiple input data receiver for bi-directional cable television (CATV) systems simultaneously monitors and selectively receives a return path signal on a plurality of return paths. When an appropriate data or signal transmission is detected on a return path, the ... | 08/07/2007 |
| 7254827 | Ingress monitoring system and method A system for monitoring reverse paths of a bi-directional cable communication network such as a CATV network, to detect and analyze ingress signals entering a reverse path and ending at a network sub-headend or headend through a corresponding one of communication li... | 08/07/2007 |
| 7203953 | Method and apparatus for two-way internet access over a CATV network with channel tracking Internet access is provided over a digital cable television system using Internet protocol (IP) over MPEG digital video. Simultaneous Internet access and TV viewing is provided by an IP over MPEG-2 video system with channel tracking. Whenever a video channel change ... | 04/10/2007 |
| 7194685 | Method and apparatus for tracking usage of online help systems One or more embodiments of the invention provide a method, apparatus, and article of manufacture for presenting a help source. A help system is maintained that comprises a single set of one or more help source files. A request is received by the help system to prese... | 03/20/2007 |
| 7177369 | Multipath communication methods and apparatuses Methods, apparatuses and systems are provided for identifying at least one multipath transmission delay within a reverse path data signal, determining at least one forward path pre-equalization parameter based on the transmission delay, and modifying a forward path ... | 02/13/2007 |
| 7177346 | Radio reception system that can remove interference signal component signal component of another user from a reception signal In a receptive system of a base station according to the communication system of a PDMA, CDMA and the like, the reception signals from a plurality of users received on a plurality of antennas are frequency-converted by a frequency conversion circuit, and then conver... | 02/13/2007 |
| 7171244 | Communication system and method with gain control for signals from distributed antennas A distributed antenna system is configured in a daisy-chain fashion along a single path. The summation of the signals received by each antenna port of the system is distributed along the path. The signal gain for the system is controlled by distributed attenuation a... | 01/30/2007 |
| 7162731 | Radio frequency characterization of cable plant and corresponding calibration of communication equipment communicating via the cable plant A switch router and one or more gateways incorporating a diagnostic and calibration system that performs RF characterization of an underlying cable plant. The switch router is connected at a point of insertion or point of distribution and each gateway is located dow... | 01/09/2007 |
| 7159236 | Transmission/reception integrated radio-frequency apparatus There is provided a highly reliable transmission/reception integrated radio-frequency apparatus which can achieve a high communication quality in a cable modem. A reception RF signal is input to a reception system block via an input/output terminal, converted to an ... | 01/02/2007 |
| 7149223 | Enhanced fiber nodes with CMTS capability Enhanced Cable Modem Termination System (CMTS) functionality, including programmable digital domain modulators and demodulators for dynamic channel assignment, is incorporated into Fiber Nodes (FNs) or mini Fiber Nodes (mFNs), yielding enhanced Fiber Nodes (eFNs). T... | 12/12/2006 |
| 7116685 | Communication parameter adjustment system in an internet compatible bi-directional communication system A bi-directional communication system advantageously automatically senses and reports problems to a central operator network management station and operates with fewer subscriber service interruptions by detecting and correcting such conditions before they result in... | 10/03/2006 |
| 7110043 | Apparatus for transmitting/receiving video signal An apparatus for transmitting a video signal to a remotely installed display apparatus, and a corresponding apparatus for receiving a video signal are provided. The apparatus for transmitting a video signal includes a PCI bridge, a transmitter, and a transceiver-PCI... | 09/19/2006 |
| 7089486 | Context switching for on-the-fly processing of fragmented frames A frame analyzer component and a memory management unit process frames received over cable television lines. The frame analyzer component may receive frames that were transmitted over the cable television lines and that were processed by a digital signal processor. ... | 08/08/2006 |
| 7061937 | Communication system A transmission schedule table of program data to be transmitted from a video server to a client is previously transmitted to a filter unit. The filter unit receives program information concerning a currently received program, from the client. Based on a transmission... | 06/13/2006 |
| 7054127 | Methods and apparatus to protect against voltage surges A cable device includes an integrated surge protection circuit. In the event that, communication signals conveyed by the cable include (potentially damaging) transient voltages, the surge protection circuit integrated in the cable suppresses the transient voltages a... | 05/30/2006 |
| 7050721 | System having an impulse noise filter means A communication system comprises a network, such as a hybrid fibre coax (HFC) network, one or more optical transmitters and potential impulse noise sources for example electrical in-home equipment, as well as filter means coupled between the noise sources and the at... | 05/23/2006 |
| 7047555 | In-building CATV system, down-converter, up-converter and amplifier In order to correctly perform frequency conversion without using a pilot signal from an external system in a CATV system in which an upward signal is converted to a high frequency in-building upward signal using an up-converter and the in-building upward signal is c... | 05/16/2006 |
| 7039939 | Method and apparatus for creating virtual upstream channels for enhanced lookahead channel parameter testing Methods, apparatus, and computer-readable media are disclosed for creating a virtual lookahead upstream receiver in a single physical upstream receiver in a CMTS, thereby avoiding having to dedicate an upstream receiver strictly for lookahead capability. A lookahead... | 05/02/2006 |
| 7039942 | Pad adjustable equalizer for two way cable transmission A forward signal equalizer for a forward amplifier for two-way coaxial cable systems, of the type having a distribution center distributing forward signals, and having reception facilities for receiving return signals from said cable system, the system having forwar... | 05/02/2006 |
| 7039432 | Dynamic upstream attenuation for ingress noise reduction A dynamic arrangement for reducing the presence of ingress noise in the upstream signal path of a two-way cable system utilizes a variable attenuation element and amplifier disposed along the upstream signal path. The amplifier includes a bypass switch so that the a... | 05/02/2006 |
| 7023907 | VDSL modem divided into a digital and an analog part A VDSL-modem which is divided into an analog part which is placed in an optical node and a digital part which is placed in a local station. The analog part of the VDSL-modem includes an A/D-converter and D/A-converter, a filter, an amplifier, a hybrid/balun, an adap... | 04/04/2006 |
| 7016308 | Digital return path for hybrid fiber/coax network A hybrid fiber/coax network is provided. The network includes a head end with at least one optical distribution node coupled to the head end over at least one fiber optic link. A plurality of coaxial cable links are coupled to each of the at least one optical distri... | 03/21/2006 |
| 7017176 | Data transmission over multiple upstream channels within a cable modem system A system and method are disclosed for transmitting upstream data from a cable modem within a cable television plant. One aspect of the invention pertains to a method that includes transmitting a first portion of the upstream data on a first upstream channel from the... | 03/21/2006 |
| 7012885 | Data communications apparatus for cable network A data communications apparatus which uses the same frequency band and modulation scheme with those used in the counterpart apparatus, and has a simple configuration and shows high reliability in transmitting and receiving high-rate data through a cable network. The... | 03/14/2006 |
| 6993016 | Methods and apparatus for transmission of analog channels over digital packet networks Methods and apparatus are provided for tunneling (transparently transmitting) over a packet network, from a source to a destination, the spectrum of one or more bandpass channels individually selected from a larger spectrum at the source. Each channel is selected, t... | 01/31/2006 |
| 6985437 | Method for dynamic performance optimization in a data-over-cable system A method and system for optimizing performance in a data-over-cable system. The method includes determining parameters for data transmission on an upstream channel of the data-over-cable system, and negotiating use of the parameters. A measurement is made of a signa... | 01/10/2006 |
| 6977958 | Differentially-driven loop extender Systems and methods are disclosed for improving DSL performance, including ADSL and VDSL performance, over a local loop between a telephone company central office and a customer premises. In particular, a loop extender is coupled to the local loop and differentially... | 12/20/2005 |
| 6978476 | Device and method of determining location of signal ingress The present invention comprises a device which may be attached to a cable ground block (62) such that the level and type for signal emitted through the upstream flow of the signal, from a residence or business (59), may be determined along with the loc... | 12/20/2005 |
| 6931659 | Cable modem having a wireless communication function A cable modem uses a CATV network as an information transfer medium. To a cable modem proper that is connected by way of a coaxial cable to a CATV network, an expansion unit is attached that has a wireless LAN function that permits wireless communication with an inf... | 08/16/2005 |
| 6915530 | Ingress detection and characterization by time/frequency map The present invention encompasses a method and apparatus for detecting and characterizing one or more ingress events in the return band and creating a time/frequency map based on the detection of the ingress events. The time/frequency map is further characterized by... | 07/05/2005 |
| 6904056 | Method and apparatus for improved scheduling technique An apparatus that includes a node having a scheduling cycle. The scheduling cycle is partitioned into amounts of data such that one of the partitioned amounts of data serviced per scheduling cycle corresponds to a data rate that corresponds to a highest speed grade ... | 06/07/2005 |
