Hybrid Fiber-coax Network Patents (Class 725/129)
  • Patent number: 10298645
    Abstract: A computer application streaming system includes an optimization unit coupled to a streaming device to determine streaming optimal playable settings for a remote user device corresponding to a selected computer application and a sending unit coupled to the optimization unit to manage streaming of the streaming optimal playable settings over a network connected to the remote user device. A receiving unit is coupled to the network to recover the streaming optimal playable settings for application to the remote user device when employing the selected computer application. An optional feedback unit is coupled to the remote user device to provide remote information over the network for modifying the streaming optimal playable settings, and an optional update unit is coupled to the streaming device to manage modification of the streaming optimal playable settings as directed by the remote information. A method of streaming a computer application is also provided.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: May 21, 2019
    Assignee: Nvidia Corporation
    Inventors: John Spitzer, Hassane Azar, Alok Ahuja, Tony Tamasi
  • Patent number: 10193652
    Abstract: The invention relates to a method for controlling access to an out-of-band communication channel in an optical communications network comprising a master device and slave devices connected to the master device via optical fiber, the optical communications network being adapted to enable in-band communications, the out-of-band communication channel being intended to enable transmissions of signalling signals with respect to the in-band communications.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: January 29, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Gwillerm Froc
  • Patent number: 10020962
    Abstract: Approaches for a virtualized Cable Modem Termination System (CMTS) for providing high speed data services to a remote physical device (RPD). The virtualized Cable Modem Termination System (CMTS) comprises a core routing engine (CRE) for performing packet switching and routing and one or more core servers (CS) that each perform CMTS functions for the one or more remote physical devices (RPDs). The core routing engine may comprise one or more core routing engine members. The core routing engine (CRE) and the one or more core servers (CS) are each implemented entirely on commercial off-the-shelf (COTS) hardware.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 10, 2018
    Assignee: Harmonic, Inc.
    Inventors: Michael W. Patrick, Nitsan S. Elfassy, Amir Leventer, Jeremy C. Rosenberg
  • Patent number: 9979493
    Abstract: Transport of differential signals is provided. In one aspect, a telecommunications system includes a first unit and a second unit. The first unit can calculate a differential signal from an original signal. The differential signal can represent a change in signal levels between constant time intervals in the original signal. The second unit can estimate the original signal from the differential signal received from the first unit over a communication medium.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: May 22, 2018
    Assignee: CommScope Technologies LLC
    Inventor: Van E. Hanson
  • Patent number: 9960851
    Abstract: In a first configuration, circuitry of a fiber node may be configured to modulate an optical carrier by an analog upstream electrical signal received via the electrical network. In a second configuration, the circuitry may be configured to digitize the analog upstream electrical signal to generate a digitized upstream signal, and modulate the optical carrier with the digitized upstream signal. An optical receiver of the fiber node may be configured to convert a downstream optical signal to a downstream electrical signal. In the first configuration, the downstream electrical signal may be a first analog signal and the circuitry may be configured to output the first analog signal into the electrical network. In a third configuration, the downstream electrical signal is a digitized waveform and the circuitry is configured to convert the digitized waveform to a second analog signal and output the second analog signal into the electrical network.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 1, 2018
    Assignee: Maxlinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 9936268
    Abstract: Systems and methods for routing an incoming service request to one of a plurality of pod units are described. A communication system can be provided that includes a plurality of pods each having a first pod serving a first subset of user accounts associated with a hosted PBX system. The first pod can include a first pod unit in a first data center and a second pod unit in a second data center. A global user directory (GUD) can be used to store a plurality of user keys that are mapped to the plurality of pods. A router can be provided to identify a user key from an incoming service request, query the GUD to identify the first pod as being associated with the user key, and route the incoming service request to one of the first and second pod units.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: April 3, 2018
    Assignee: RingCentral, Inc.
    Inventors: Vlad Vendrow, Vladimir Shmunis, Vadim Zhuk, Dmitriy Alexandrovich Solovey
  • Patent number: 9712815
    Abstract: There is provided a method of anticipating component failure in broadband network devices, the method comprising monitoring values of AC ripple voltage on a DC voltage from a power supply associated with a CATV amplifier or node, comparing values of AC ripple voltage with a set value to determine whether the value of AC ripple voltage are acceptable or not, generating an alarm when the set value is exceeded and sending the alarm to a remote computing device. The monitoring step further comprises amplifying the AC ripple voltage by a factor of 10 and passing the amplified signal to a processing means for comparison with the set value. A circuit for monitoring the ripple voltage is also provided.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: July 18, 2017
    Assignee: Technetix B.V.
    Inventor: Gert Bronkhorst
  • Patent number: 9509405
    Abstract: In a first configuration, circuitry of a fiber node may be configured to modulate an optical carrier by an analog upstream electrical signal received via the electrical network. In a second configuration, the circuitry may be configured to digitize the analog upstream electrical signal to generate a digitized upstream signal, and modulate the optical carrier with the digitized upstream signal. An optical receiver of the fiber node may be configured to convert a downstream optical signal to a downstream electrical signal. In the first configuration, the downstream electrical signal may be a first analog signal and the circuitry may be configured to output the first analog signal into the electrical network. In a third configuration, the downstream electrical signal is a digitized waveform and the circuitry is configured to convert the digitized waveform to a second analog signal and output the second analog signal into the electrical network.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: November 29, 2016
    Assignee: Maxlinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 9379882
    Abstract: Systems and methods are provided to use of out-of-band (OOB) channels for the transport of network-synchronization signals and network control information. These OOB channels transport synchronization and control channels over low-frequency bands outside of the frequency bands used for the data channels. Locating expensive network-synchronization functions in the optical network unit (ONU) and sharing the derived synchronization signals among multiple downstream customer premises equipment (CPE) devices results in cost savings and provides a means for maintaining a continuous, end-to-end synchronization reference, even during periods when the data channels on the copper network segment are in an energy-efficiency mode (e.g., a low-power and/or sleep mode).
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: June 28, 2016
    Assignee: Broadcom Corporation
    Inventors: Lowell D. Lamb, Glen Kramer, Amit Oren
  • Patent number: 9363760
    Abstract: A method and system is provided for dynamic allocation of power required on a number n with n greater than 1 of an HF communication system, comprising an amplifier of maximum total power and at least one step in which the power and/or the modulation is managed on all the n pathways of said system so as to optimize a given probability of error termed the operating point for a maximum bitrate under the constraint of the total power imposed by the operation of said system.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: June 7, 2016
    Assignee: Thales
    Inventor: Catherine Lamy-Bergot
  • Patent number: 9203638
    Abstract: A cable television plant may include fiber nodes, cable modems, a management information base (MIB), and a cable modem termination system (CMTS). The CMTS may include logic to apply information from the MIB to determine the suitability of resources assigned to the fiber nodes from particular MAC domains for providing data communications.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: December 1, 2015
    Assignee: ARRIS Enterprises, Inc.
    Inventor: William T Hanks
  • Patent number: 9167309
    Abstract: A method for transmitting broadcast and data streams in an HFC-based cable network includes a first transmission step of a broadcast transmission apparatus sending broadcast and data service streams in an IP-based stream or RF signal form through an optical section up to a cell node that is a contact point between the optical section and a cable section of a cable network and a second transmission step of the cell node converting the broadcast and data service streams into one of RF signal, IP-based stream, and RF/IP convergence service stream forms depending on a service type of a subscriber terminal and sending the converted broadcast and data service streams to the subscriber terminal through the cable section.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: October 20, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ho Sook Lee, Dong Joon Choi, Nam Ho Hur
  • Patent number: 9106363
    Abstract: A method of allocating upstream bandwidth on a network comprising mapping an integer portion of a value obtained from a grant start time into a symbol number of a data frame on a coaxial segment of the network, wherein the value comprises the grant start time in units of a length of a data frame in the coaxial segment of a network, and wherein the length of the data frame comprises a preselected number of units of time defined in an optical segment of a network; mapping a fractional portion of the value obtained from the grant start time into a subcarrier number of the data frame; and mapping a grant length into a number subcarriers of the data frame.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 11, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Fang, Jim Chen, Li Zhang
  • Patent number: 9094338
    Abstract: A system and method for capturing objects and balancing systems resources in a capture system are described. An object is captured, metadata associated with the objected generated, and the object and metadata stored.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: July 28, 2015
    Assignee: McAFEE, INC.
    Inventors: Ratinder Paul Singh Ahuja, William Deninger, Erik de la Iglesia, Rick Lowe
  • Patent number: 9032468
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter by compensating for optical dispersion over the fiber optic network.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 12, 2015
    Assignee: ARRIS Technology, Inc.
    Inventors: David B Bowler, Clarke V. Greene, John Holobinko, Xinfa Ma, Shaoting Gu, Lawrence M. Hrivnak
  • Publication number: 20150113586
    Abstract: Subscriber drop units include a housing having a top wall that has an exterior surface and an interior surface and a plurality of sidewalls that extend downwardly from the top wall, the top wall and the sidewalls defining an interior cavity. An input port and at least one output port extend through the housing. A printed circuit board is mounted within the interior cavity.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 23, 2015
    Inventors: Shi Man Li, Robert R. Riggsby, Robert E. Darrow, Chi-Min Kang, Jui-Huang Chung
  • Patent number: 8997165
    Abstract: A media converter is to be coupled to an optical line terminal via an optical link and to a plurality of coax network units via coax links in a cable plant. The media converter includes an optical physical-layer device to receive and transmit optical signals via the optical link and a coax physical-layer device to receive and transmit electrical signals via the coax links. The media converter also includes an implementation of an optical-coax convergence layer to schedule transmissions of electrical signals from the plurality of coax network units by allocating coax resources among the plurality of coax network units in accordance with resource allocation for the optical link.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: March 31, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Andrea Garavaglia, Juan Montojo, Christian Pietsch, Stephen J. Shellhammer, Nicola Varanese
  • Patent number: 8938769
    Abstract: A virtual converged cable access platform (CCAP) system and method for hybrid fiber CATV (HFC) cable networks. The system uses a new type of digital optical fiber node configured to receive optical fiber data packets, and reconstitute the optical data packets into RF waveforms suitable for injection into the system's CATV cable. The system replaces the legacy HFC head end with a simplified “virtual head end”. The system's virtual head end operates using a new type of virtual CCAP controller and virtual CCAP software that in turn controls high performance edge routers. Much of the intelligence of running the HFC cable system is managed by the controller software, while the edge router manages the interface between the CATV portion of the system and outside networks. The system can handle even legacy CATV RF signals by appropriate conversion operations, while reducing power and space needs, and improving operational flexibility.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: January 20, 2015
    Assignee: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Publication number: 20150020130
    Abstract: Interleaving multiple streams of data using a universal services multiplexer is followed by conveying a time interleaved multiplexer stream to a remote QAM module. A universal services multiplexer interleaves multiple streams of data into a time interleaved multiplexer stream.
    Type: Application
    Filed: May 13, 2014
    Publication date: January 15, 2015
    Inventors: Michael Field, Javier A Solis, Rei Chen Brockett, Dave Baran
  • Publication number: 20150020134
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter. The transmitter preferably includes a combining network that combines CATV signals received from a CATV head end.
    Type: Application
    Filed: March 15, 2013
    Publication date: January 15, 2015
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: David B. Bowler, Clarke V. Greene, John Holobinko, Gerard White, Xinfa Ma, Shaoting Gu, Lawrence M. Hrinvak
  • Patent number: 8935739
    Abstract: Distributed CMTS device for a HFC CATV network serving multiple neighborhoods by multiple individual cables, in which at least some and often all of the QAM modulators that provide data for the individual cables are remote QAM modulators ideally located at the fiber nodes. A CCAP set of IP/on-demand data is transmitted to the nodes using an optical fiber, often using digital protocols such as Ethernet protocols. Optionally a basic set of legacy CATV QAM data, transmitted using RF waveforms transposed to optical frequencies, may also be transmitted to the nodes using either the same or different optical fiber. The nodes extract the data specific to each neighborhood, and inject this data into unused cable QAM channels along with any optional legacy CATV QAM waveforms as desired, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for this system is also disclosed.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: January 13, 2015
    Assignee: Gainespeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Patent number: 8908538
    Abstract: Systems and methods can provide for improved impairment discovery for broadband communication systems. In some implementations, such systems and methods can provide cluster outage detection and/or time-stamped outage data and visualization. Improved outage discovery can help operators plan repair and thereby reduce truck rolls and decrease network down-time.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: December 9, 2014
    Assignee: ARRIS Enterprises, Inc.
    Inventor: Thomas Williams
  • Patent number: 8910230
    Abstract: A method of converting legacy HFC CATV cable systems, which transmit data over the optical fiber portion of the system using the optical counterpart of analog RF waveforms, such as RF QAM waveforms transduced to corresponding optical QAM waveforms, to improved HFC CATV systems that transmit data over the optical fiber using optical fiber optimized protocols, such as Ethernet frames and other optical fiber optimized digital transport protocols. According to the method, most aspects of the legacy HFC CATV system may be retained, however at the CATV head end, the optical fiber transmitter system is replaced by an improved system that extracts the underlying symbols from legacy waveforms, packages these symbols into optical fiber optimized packets, and transmits downstream. The legacy optical fiber nodes are replaced with improved nodes capable of receiving the packets and remodulating the symbols into RF waveforms suitable for injection into the system's CATV cable.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: December 9, 2014
    Assignee: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Patent number: 8904460
    Abstract: A leak defined by coordinates is located in a network. A signal emitted from the leak is detected at first, second and third points having first, second and third sets of coordinates, respectively. Propagation delays t1, t2 and t3 of the signal are measured, which include the propagation delays between the leak and the first, second and third points, respectively. The time difference ?t12 between delays t1 and t2 and the time difference ?t23 between delays t2 and t3 are calculated. The approximate location of the leak is determined by solving for the coordinates of the leak in at least two hyperbolic equations, where the equations are defined by the time differences ?t12 and ?t23, and by the first, second and third sets of coordinates.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: December 2, 2014
    Assignee: Arcom Digital, LLC
    Inventor: Victor M. Zinevich
  • Patent number: 8863213
    Abstract: A method to extend the downstream and upstream data carrying capability of an HFC CATV system. At the neighborhood level, the CATV cable (the primary channel) is divided into different segments connected by electrically active junctions. At the junctions, each segment is also connected to a secondary data channel, such as an optical fiber or ultrahigh RF frequency (1 GHz+) secondary channel, which can carry supplemental downstream narrowcast channels and upstream channels between a plurality of such CATV cable segments. At the junctions, some CATV primary channel RF signals such as broadcast channels are passed without interference, while certain primary channel downstream narrowcast RF channels and upstream narrowcast RF channels are precisely suppressed using adaptive cancelling methods. Such adaptive cancellation methods are superior to prior art lowpass, highpass, and bandpass filtering methods because they allow for more efficient use of limited CATV primary channel RF spectrum.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: October 14, 2014
    Assignee: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Publication number: 20140282804
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventor: General Instrument Corporation
  • Publication number: 20140282802
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter by compensating for optical dispersion over the fiber optic network.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: David B. Bowler, Gerard White, John Holobinko, Clarke V. Greene, Bruce C. Pratt, Xinfa Ma, Shaoting Gu, Xiang He
  • Publication number: 20140282801
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventor: General Instrument Corporation
  • Publication number: 20140282805
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: David B. Bowler, Clarke V. Greene, Gerard White, Bruce C. Pratt, Steven H. Hersey
  • Publication number: 20140282803
    Abstract: Improved systems and methods for delivering CATV content over a fiber optic network from a transmitter. The transmitter preferably monitors performance attributes of a transmitted signal and selectively configures the transmitter based on the monitored attributes.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: General Instrument Corporation
    Inventors: David B Bowler, Gerard White, John Holobinko, Clarke V. Greene, Bruce C. Pratt, Xinfa Ma, Shaoting Gu, Xiang He
  • Patent number: 8832767
    Abstract: A frequency band selection device that can be inserted into a signal transmission line of a CATV system on the premise of a user includes at least two signal path sets between a tap side and a premise side. Each signal path set includes two discrete signal paths, a high frequency signal path for a downstream bandwidth and a low frequency signal path for an upstream bandwidth. The high frequency signal path and the low frequency signal path are separated by a cut-off transition frequency that is different for each signal path set. The device further includes a switch controller having at least two discrete switch positions. The switch controller chooses one of the switch positions as a result of an information signal. Each of the switch positions corresponds to a respective one of the signal path sets.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: September 9, 2014
    Assignee: PPC Broadband, Inc.
    Inventors: Thomas A. Olson, David Kelma, Joseph Lai, Steven K. Shafer
  • Patent number: 8811148
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a set-top box (STB) having a controller to generate a trouble report indicating a malfunction with one or more services, and submitting the trouble report to a mitigation system. The mitigation system can be adapted to detect one or more operational faults in at least one of a Digital Subscriber Line Access Multiplexer (DSLAM), a residential gateway (RG), and the STB, cycle operations of at least one of the DSLAM, the RG, and the STB responsive to detecting an undesirable state of operation of at least one of the DSLAM, the RG, and the STB, and generate a trouble ticket directed to a service agent responsive to detecting that at least one of the DSLAM, the RG and the STB continues to exhibit at least one operational fault. Other embodiments are disclosed.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Chen-Yui Yang, Michele Macauda, Paritosh Bajpay
  • Patent number: 8782729
    Abstract: Producing advanced HFC CATV cable systems while easing the burden of backward compatibility. The system improves CATV data carrying capacity by moving RF QAM modulators from the cable head end to various individually or group addressed optical fiber nodes supplying neighborhood CATV cables, and sending data from the cable head IP backbone to the nodes over optical fiber as IP data packets. For high backward compatibility, the system digitizes legacy RF waveforms, or demodulates legacy QAM waveforms to QAM symbols, also transmits these over the optical fiber as IP data packets, and then reconstitutes back to original waveforms as needed. The system is thus able to easily handle legacy NTSC, FM, QPSK waveforms and do partial (QAM symbol level) compression of legacy QAM waveforms to and from multiple nodes without requiring additional optical fiber wavelengths. The system may use non-standard upstream/downstream CATV frequency splits, filter bank receivers, and FPGA/DSP/ASIC methods.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: July 15, 2014
    Assignee: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Patent number: 8763063
    Abstract: Apparatus and methods for controlled splitting and isolation of signals in a radio frequency network. In one embodiment, the network comprises a cable television network, and the apparatus comprises a signal splitter having controlled isolation loss at its output ports in at least one frequency band, thereby enabling communications between terminal devices at the subscriber premises that would otherwise be isolated by high losses typical of prior art splitters. The splitter apparatus can also be utilized with a filter/reflector circuit that advantageously provides maximal downstream frequency spectrum bandwidth while suitably reflecting the aforementioned communications to maintain them within the subscriber-side network without interference.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: June 24, 2014
    Assignee: Time Warner Cable Enterprises LLC
    Inventors: Paul D. Brooks, Robert L. Romerein
  • Publication number: 20140165126
    Abstract: A handheld leakage detector for finding digital signal leaks in a HFC network, comprises a radio receiver, a leakage receiver, leakage sampler, a correlator, and a display. The radio receiver receives samples of the digital signal taken from the HFC network, called “reference samples.” The leakage receiver receives a leakage signal, which is a leaked version of the digital signal from the HFC network. The leakage sampler samples the leakage signal to form leakage samples. The correlator performs a cross-correlation of the reference samples and the leakage samples, to produce a correlation function. An optimizable value is determined from the correlation function. The value generally becomes more optimized as the detector approaches the leak. The leak is sought by iteratively changing the position of the detector until the value becomes substantially optimized or the leak is found.
    Type: Application
    Filed: February 11, 2014
    Publication date: June 12, 2014
    Applicant: ARCOM DIGITAL, LLC
    Inventor: Victor M. Zinevich
  • Publication number: 20140150047
    Abstract: Distributed and software reconfigurable remote CMTS (CMRTS) device, based on MAC and PHY units with FPGA and DSP components, for a HFC CATV network. The various CATV RF modulators, such as QAM modulators, may be located entirely at the fiber nodes if desired. Although a basic set of CATV QAM data waveforms may optionally be transmitted to the nodes using a first fiber, in a preferred embodiment, all data may be transmitted to the nodes using other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into the cable portion of the system as RF waveforms, such as RF QAM channels. A computerized “virtual shelf” control system for managing and reconfiguring the FPGA and DSP based CMTRS units, as well as a new type of edge router based all-digital virtual head end (virtual converged cable access platform) is also disclosed.
    Type: Application
    Filed: February 3, 2014
    Publication date: May 29, 2014
    Applicant: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Patent number: 8732782
    Abstract: A system and method is described for providing communication services, including voice communications, data communications, audio/video-on-demand, and broadcast audio/video, over twisted-pair telephone lines. The system and method are based on broadband transmission techniques, such as fiber-to-the-neighborhood (FTTN) and digital subscriber line (DSL) techniques. This approach can be applied to develop an access network comprising an array of remote terminals connected to one or more telephone central offices by fiber optic cables and connected to subscriber nodes by twisted-pair lines. Each remote terminal has the capacity to support multiple subscribers and to switch broadcast channels onto subscriber lines. Each subscriber is provided the capability to individually select via the DSL interface one or more a broadcast channels from a larger set of channels.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: May 20, 2014
    Assignee: Verizon Services Corp.
    Inventor: Kevin A. DeMartino
  • Publication number: 20140137177
    Abstract: Producing advanced HFC CATV cable systems while easing the burden of backward compatibility. The system improves CATV data carrying capacity by moving RF QAM modulators from the cable head end to various individually or group addressed optical fiber nodes supplying neighborhood CATV cables, and sending data from the cable head IP backbone to the nodes over optical fiber as IP data packets. For high backward compatibility, the system digitizes legacy RF waveforms, or demodulates legacy QAM waveforms to QAM symbols, also transmits these over the optical fiber as IP data packets, and then reconstitutes back to original waveforms as needed. The system is thus able to easily handle legacy NTSC, FM, QPSK waveforms and do partial (QAM symbol level) compression of legacy QAM waveforms to and from multiple nodes without requiring additional optical fiber wavelengths. The system may use non-standard upstream/downstream CATV frequency splits, filter bank receivers, and FPGA/DSP/ASIC methods.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 15, 2014
    Applicant: COHERE NETWORKS, INC.
    Inventor: Shlomo Selim Rakib
  • Patent number: 8726317
    Abstract: A method of converting a modulated optical signal to an encoded electrical signal is provided. The method utilizes a device comprising an electrooptic sideband generator, an optical filter, and an optical/electrical converter. Initially, the modulated optical signal, which carries encoded optical data, is directed to an optical input of the electrooptic sideband generator. The electrooptic sideband generator is driven to generate frequency sidebands about a carrier frequency of the input optical signal. The optical filter is utilized to discriminate between the frequency sidebands and the carrier frequency and combine sidebands-of-interest to yield at least one frequency-converted optical signal comprising a millimeter wave modulation frequency. The frequency converted optical signal carries the encoded optical data and the modulation frequency is a function of the spacing of the sidebands-of-interest.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: May 13, 2014
    Assignee: Battelle Memorial Institute
    Inventors: David W. Nippa, Richard W. Ridgway
  • Patent number: 8718478
    Abstract: A radio-over-fiber (RoF) hybrid wired/wireless transponder is disclosed that is configured to provide both wireless and wired communication between a hybrid head-end and one or more client devices. The hybrid transponder includes optical-to-electrical (O/E) and electrical-to-optical (E/O) conversion capability and is configured to frequency multiplex/demultiplex electrical “wired” signals and electrical “wireless” signals. The electrical wireless signals are wirelessly communicated to the client device(s) via a multiple-input/multiple-output (MIMO) antenna system within a cellular coverage area. The electrical wired signals are communicated to the client device(s) via a wireline cable that plugs into a wireline cable port on the transponder. The hybrid RoF system includes a hybrid head-end capable of transmitting and receiving wired and wireless optical signals, and an optical fiber cable that is optically coupled to the hybrid head-end and to at least one hybrid transponder.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: May 6, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Dean Michael Thelen, Jacob George, Luis Alberto Zenteno, Michael Sauer, Martyn N. Easton
  • Publication number: 20140101709
    Abstract: An improved optical fiber management bridge 100 can comprise an optical hinge 152 for an electronics communications device 112 which is especially useful for a broadband network 104. The electronics communications device can have a housing 120 for enclosing an electronics package 114 comprising at least one optical module 118 and optical fibers 108. The optical bridge can have optical surfaces 156 for supporting portions of the optical fibers 108 which are routed and extend between the top 128 and base 122 of the housing 120. The optical bridge can have an intermediate portion 163 for accommodating safe transition of the optical fibers 108 over the hinge line 129 of the housing 120.
    Type: Application
    Filed: October 5, 2012
    Publication date: April 10, 2014
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: Vipul D. Rathod, Dennis P. Conroy, Jamie J. Swift, David M. Thibeault, Thomas M. Weiss
  • Publication number: 20140101711
    Abstract: A virtual converged cable access platform (CCAP) system and method for hybrid fiber CATV (HFC) cable networks. The system uses a new type of digital optical fiber node configured to receive optical fiber data packets, and reconstitute the optical data packets into RF waveforms suitable for injection into the system's CATV cable. The system replaces the legacy HFC head end with a simplified “virtual head end”. The system's virtual head end operates using a new type of virtual CCAP controller and virtual CCAP software that in turn controls high performance edge routers. Much of the intelligence of running the HFC cable system is managed by the controller software, while the edge router manages the interface between the CATV portion of the system and outside networks. The system can handle even legacy CATV RF signals by appropriate conversion operations, while reducing power and space needs, and improving operational flexibility.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 10, 2014
    Applicant: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Patent number: 8670667
    Abstract: The present disclosure generally pertains to an arrayed media converter (AMC) that has an array of Wavelength Division Multiplexing-Passive Optical Network (WDM-PON) Optical Network Units (ONUs) for terminating an optical channel in the feeder or distribution portion of a telecommunication network. The ONU converts an optical signal from the optical channel into at least one electrical signal for transmission to a customer premises. Thus, the AMC serves as an interface between at least one WDM-PON link and at least one conductive connection, such as a twisted pair. In one exemplary embodiment, the AMC comprises a sealed housing that is environmentally hardened to protect the AMC from environmental conditions, including changes in weather. Such an AMC may be used to provide a robust, cost effective Fiber To The Curb (FTTC) solution, but the AMC may be used at other points within the network, if desired.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 11, 2014
    Assignee: ADTRAN, Inc.
    Inventors: Leif J. Sandstrom, Kevin W. Schneider
  • Patent number: 8644706
    Abstract: Distributed and highly software reconfigurable CMTS (CMRTS) device, based on MAC and PHY units with FPGA and DSP components, for a HFC CATV network. The various CATV RF modulators, such as QAM modulators, may be divided between QAM modulators located at the cable plant, and remote QAM modulators ideally located at the fiber nodes. A basic set of CATV QAM data waveforms may optionally be transmitted to the nodes using a first fiber, and a second set of IP/on-demand data may be transmitted to the nodes using an alternate fiber or alternate fiber frequency, and optionally using other protocols such as Ethernet protocols. The nodes will extract the data specific to each neighborhood and inject this data into unused QAM channels, thus achieving improved data transmission rates through finer granularity. A computerized “virtual shelf” control system for managing and reconfiguring the FPGA and DSP based CMTRS units is also disclosed.
    Type: Grant
    Filed: July 22, 2012
    Date of Patent: February 4, 2014
    Assignee: Gainspeed, Inc.
    Inventor: Shlomo Selim Rakib
  • Publication number: 20140026177
    Abstract: According to the present invention, in an optical transmission system optically transmitting an optical signal between a first camera adaptor provided to a first video camera, a second camera adaptor provided to a second video camera, and a base station provided at a position remote from the video cameras, the first camera adaptor converts a first electric signal including a video signal component from the first video camera into a first optical signal and transmits the first optical signal to the second camera adaptor. The second camera adaptor receives the first optical signal, converts a second electric signal including a video signal from the second video camera into a second optical signal, and transmits the first and second optical signals to the base station. The base station receives the first and second optical signals, converts the received optical signals into the first and second electric signals, and outputs the electric signals to an external device.
    Type: Application
    Filed: July 18, 2013
    Publication date: January 23, 2014
    Inventor: Kentaro Hashiguchi
  • Patent number: 8634719
    Abstract: Systems and methods for enabling different network nodes of a network access system to share a backhaul communication link are disclosed. In one embodiment, the method includes: connecting a first modem to a first node of the network access system; connecting a second modem to a second node of the network access system; connecting the first modem to a first port of a splitter filter; connecting the second modem to a second port of the splitter filter; and connecting a backhaul communication link to a third port of the splitter filter, which is configured to multiplex signals transmitted by the modems onto the backhaul communication link, wherein the frequency spectrum of the signal transmitted by the first modem does not overlap substantially with the frequency spectrum of the signal transmitted by the second modem.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: January 21, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Per-Erik Eriksson
  • Patent number: 8631450
    Abstract: A BCN network with BCN modems that enable network wired devices to communicate over a typical home coaxial network that may include passive splitters and different types of coaxial cable.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: January 14, 2014
    Assignee: Entropic Communications, Inc.
    Inventors: Brett Bernath, Anton Monk, Itzhak Gurantz, Ladd El Wardani, Ron Porat, Yusuf Ozturk, Ron Lee, Wee-Peng Goh, Magnus Berggren
  • Publication number: 20140013361
    Abstract: A real time system to both televise and stream sporting events from sports paraphernalia that are ordinarily used by the players on soccer playing fields, ice hockey rinks, tennis courts, baseball playing fields and football playing fields are disclosed. The sports paraphernalia are instrumented with a variety of TV cameras, microphones, and bi-directional communication electronics. Instrumented sports paraphernalia such as ice hockey goals, ice hockey pucks, soccer goals, tennis nets, tennis posts, baseball bases, baseball home plates, baseball pitcher's rubbers and footballs are disclosed. Instrumentation is built into and contained internally within some of the instrumented sports paraphernalia. Instrumentation is mounted and attached onto some of the sports paraphernalia. The instrumented sports paraphernalia can both televise signals to a TV viewing audience, and simultaneously stream onto the internet.
    Type: Application
    Filed: June 4, 2013
    Publication date: January 9, 2014
    Inventors: Lawrence Maxwell Monari, Lawrence Scott Monari
  • Publication number: 20130291044
    Abstract: A handheld leakage detector for finding digital QAM signal leaks in a HFC network, comprises a radio receiver, a leakage receiver, leakage sampler, a correlator, and a display. The radio receiver receives samples of the QAM signal taken from the HFC network, called “reference samples.” The leakage receiver receives a QAM leakage signal, which is related to the QAM signal from the HFC network. The leakage sampler samples the leakage signal to form leakage samples. The correlator performs a coherent cross-correlation of the reference samples and the leakage samples, to produce a correlation peak. A value is determined from the correlation peak and displayed on the display. The value generally becomes more optimized as the detector approaches the leak. The leak is sought by iteratively changing the position of the detector until the displayed value becomes substantially optimized or the leak is found.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Applicant: ARCOM DIGITAL, LLC
    Inventor: Victor M. Zinevich
  • Patent number: 8566896
    Abstract: An addressable optical network interface unit includes an optical input and a radio frequency output. The unit also includes an optical-to-electrical conversion circuit that converts optical signals received at the optical input into radio frequency signals, a directional coupler that is coupled to an output of the optical-to-electrical conversion circuit and a radio frequency receiver that is coupled to a first output of the directional coupler. The radio frequency receiver receives radio frequency signals input through the optical input. The unit also includes a controller that is coupled to the radio frequency receiver, and a filter circuit that is coupled to a second output of the directional coupler. The filter circuit includes multiple signal paths that filter out signals in different frequency ranges. Switches are provided that select one of the signal paths through the filter circuit. These switches are controlled in response to data contained in the radio frequency signal.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: October 22, 2013
    Assignee: CommScope, Inc. of North Carolina
    Inventors: Robert Ryan Riggsby, Neil Phillips, Mark Vogel