Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. The present system used point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements. A tree-and-branch network architecture is therefore established in which each intelligent network element is assigned a routing ID employed in the point-to-point transmissions while leaving legacy analog signals unimpeded. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Distortion due to transmission characteristics of a transmission medium is corrected by measuring leakage in a signal orthogonal to a received signal. The frequency response of an equalizer is adaptively adjusted until the measured leakage is at a local minimum.

Abstract: Distortion due to transmission characteristics of a transmission medium is corrected by measuring leakage in a signal orthogonal to a received signal. The frequency response of an equalizer is adaptively adjusted until the measured leakage is at a local minimum.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bidirectional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals, or messages, are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals, or messages, are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.

Abstract: Distortion due to transmission characteristics of a transmission medium is corrected by measuring leakage in a signal orthogonal to a received signal. The frequency response of an equalizer is adaptively adjusted until the measured leakage is at a local minimum.

Abstract: A services definition language for seamlessly creating and maintaining services over a network service reduces deployment time, cost, and maintenance, and increases reliability. An executable element generator is operable to process module scripts, such as an XML (Extensible Markup Language) script, recognized across the execution environment. Each module script describes a network element, service, or subscription. A plurality of available services are defined, in which each of the available services corresponds to one or more of the module scripts. A script processor interprets the module script and provides it to executable element generators conversant in the script language, which process the module scripts via a GUI to produce executable objects. A service provisioning engine is operable to execute the executable objects for providing the corresponding service via the network.

Abstract: A differential slicer circuit includes a plurality of differential comparators and threshold voltages. Each differential comparator includes two matched amplifiers cross-coupled as a subtractor for a differential threshold signal dependent on the threshold voltages. The differential comparator outputs a differential output voltage dependent on the difference between an input differential signal and the differential threshold voltage.

Abstract: A method and apparatus for providing frequency acquisition and locking detection for a phase lock loop is disclosed. The phase lock loop locks a receiver local oscillator to the frequency and phase of an RF carrier to allow data to be recovered from the RF carrier in the receiver. An analog mixer in the phase lock loop compares the frequency and phase of a receive LO output by a voltage controlled oscillator in the phase lock loop and the received RF carrier. A locking indicator dependent on the result of the comparison indicates whether the phase lock loop is locked. The locking indicator is coupled to a comparator. The comparator generates a pulse to close a switch in order to inject a periodic sweeping signal generated by a free running multi vibrator into the phase lock loop to push the receiver LO into the locking range.

Abstract: A ping-pong scheme is used to slow down data transfer speed between an analog slicer in a receiver and a digital physical layer device, while maintaining the same data throughout. Two edges of a clock are used to slice the incoming analog signal, convert the analog signal to a digital signal and latch the converted signal. A ping-pong data pipeline is provided from the analog slicer to the physical layer device.

Abstract: An automatic gain control circuit in a receiver estimates an AGC gain using information from an estimated amplitude signal derived from a received signal before a carrier signal is recovered from the received signal. The carrier signal is recovered from the received signal using the estimated AGC gain. After the carrier signal is recovered, the amplitude of the estimated amplitude signal decreases below the amplitude of the recovered carrier signal. The Automatic Gain Control circuit uses the amplitude of the recovered I and/or Q signal to accurately set the AGC gain.

Abstract: A services definition language for seamlessly creating and maintaining services over a network service reduces deployment time, cost, and maintenance, and increases reliability. An executable element generator is operable to process module scripts, such as an XML (Extensible Markup Language) script, recognized across the execution environment. Each module script describes a network element, service, or subscription. A plurality of available services are defined, in which each of the available services corresponds to one or more of the module scripts. A script processor interprets the module script and provides it to executable element generators conversant in the script language, which process the module scripts via a GUI to produce executable objects. A service provisioning engine is operable to execute the executable objects for providing the corresponding service via the network.

Abstract: A virtual storage adapter provides networked data storage to a data processing device for delivering consumer entertainment services using virtual devices accessed over a high-speed quality-of-service-enabled communications network. A data storage device emulation unit emulates the functionality of a data storage device (e.g., a DVD or a CD) and a network interface comprising an IP Small Computer System Interface (“iSCSI”) compatible interface connects the data storage device emulation unit to an iSCSI storage gateway. The virtual storage adapter provides video on demand (“VoD”) services using a video on demand server comprising a video on demand portal for selection and an administration unit for billing. Personal video recorder services are also provided, including data expiration, capacity on demand, consolidated recording and community recording features.

Abstract: In a network system, services are provided to users via network interconnections from a service provider. Such services include data, voice, video, and others, and are typically implemented and/or initiated via an interconnection from a network node operated by the service provider to customer premises equipment (CPE) operable to receive the service. Service provisioning includes identifying the service to be provided, identifying the CPE to receive the service, and the determining the manner in which the service is to be provided. In an execution environment such as a hybrid fiber-coax (HFC) network, service deployment time and cost, and maintenance are reduced, and reliability increased, by an executable element generator operable to generate workflow definition files, such as an XML (Extensible Markup Language) script. A plurality of services are defined according to a workflow model, in which each of the services corresponds to one or more of the executable scripts.

Abstract: Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals, or messages, are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router.