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| Number | Title | Issue Date |
| 6418122 | Method and apparatus for assuring sufficient bandwidth of a statistical multiplexer Techniques for determining an output rate for a bit stream, the output rate being determined by applying information read from the bit stream to available bandwidths. The techniques are employed to construct a statistical multiplexer that multiplexes vary... | 07/09/2002 |
| 6411602 | Method and apparatus for detecting and preventing bandwidth overflow in a statistical multiplexer Techniques for determining an output rate for a bit stream, the output rate being determined by applying information read from the bit stream to available bandwidths. The techniques are employed to construct a statistical multiplexer 80 that multiplexes v... | 06/25/2002 |
| 6405239 | Using a hierarchical file system for indexing data broadcast to a client from a network of servers A broadcast file system organizes data sent to a client by broadcast via a high capacity data broadcast delivery network from a plurality of servers. The data is organized into a hierarchical file system including a directory index. A server registers to ... | 06/11/2002 |
| 6405253 | Dynamic allocation of a set of addresses to router RF modem for individual assignment to hosts An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Interne... | 06/11/2002 |
| 6393585 | Method and apparatus for restoring operating systems in a set-top box environment A computer-implemented method and apparatus for restoring operating systems within a set-top box system. The restoration provides for operating a first operating system in a first memory. An application program is operated in a second memory. The first op... | 05/21/2002 |
| 6324267 | Two-tiered authorization and authentication for a cable data delivery system Apparatus for a cable television subscriber to log onto a computer network with a modem over an upstream path using a USERID and password. The network validates the subscriber USERID and subscriber password with a stored database of valid USERIDs and asso... | 11/27/2001 |
| 6308328 | Usage statistics collection for a cable data delivery system Apparatus for recording and collecting usage and other statistical data from components of a cable data network comprises a network manager for maintaining and collecting the statistics. Internet protocol addresses are associated with components of the ne... | 10/23/2001 |
| 6301223 | Method of using routing protocols to reroute packets during a link failure An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Interne... | 10/09/2001 |
| 6300962 | Method and apparatus for providing reliable graphic memory operations in a set-top box environment A video memory handling system and method for providing a graphic computer-implemented process with a predetermined amount of video memory to be used by the graphic process to perform a predetermined graphic-related operation within a set-top box environm... | 10/09/2001 |
| 6286058 | Apparatus and methods for automatically rerouting packets in the event of a link failure An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Interne... | 09/04/2001 |
| 6282208 | Data traffic control in a data modem system Method and apparatus for monitoring data traffic through a cable data network in order to guarantee a minimum and maximum bandwidth and burst length. Traffic statistics are kept as credits that are only updated as needed. Each cable modem in the network i... | 08/28/2001 |
| 6272150 | Cable modem map display for network management of a cable data delivery system Apparatus for recording and collecting the installed location of cable modems in a cable data network comprises a network manager for maintaining and collecting cable modem location information. Components of the network manager maintains a software agent... | 08/07/2001 |
| 6249523 | Router for which a logical network address which is not unique to the gateway address in default routing table entries An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Interne... | 06/19/2001 |
| 6230203 | System and method for providing statistics for flexible billing in a cable environment A system for providing flexible billing in a cable environment can establish billing practices based on tier level of service, quality of service or the amount of network resources consumed. A plurality of tiers or levels of service can be defined by para... | 05/08/2001 |
| 6208656 | Methods for dynamically assigning link addresses and logical network addresses An asymmetrical network for coupling customer-premises Internet hosts such as personal computers to the Internet. The head end of a CATV system has a high-bandwidth connection to the Internet. The down link connecting the personal computers to the Interne... | 03/27/2001 |
| 6204718 | Method and apparatus for generating second-order predistortion without third-order distortion An embodiment includes an input node, a shunt impedance electrically connected to the input node, and at least one shunt diode connected in series with the shunt impedance. The input node receives an electrical signal from a signal generator. A bias curre... | 03/20/2001 |
| 6195369 | High stability soliton source A highly stable soliton source uses a bulk Er/Yb glass laser which operates in two longitudinal modes of the laser cavity with substantially identical amplitudes to generate beat modulation. The beat modulation is then passed through a pulse compression f... | 02/27/2001 |
| 6160993 | Method and apparatus for command and control of remote systems using low earth orbit satellite communications A method and apparatus for providing command and control of remote systems using low earth orbit satellite communications is disclosed. According to the present invention, a programmable transceiver apparatus provides a two-way communications path between... | 12/12/2000 |
| 6052031 | Signal level control circuit for amplifiers An amplifier (125) includes a gain stage (210) for amplifying a signal, a variable attenuator (208), such as a Bode circuit, coupled to the gain stage (210) for attenuating the signal, and a signal level control circuit (222, 218, 220) coupled to the vari... | 04/18/2000 |
| 5991139 | Protection circuit and a node for a communications system using the protection circuit A protection circuit prevents a surge applied to one end of a signal line from being applied to a circuit connected to another end of the signal line. The protection circuit includes a first diode having an anode coupled to the signal line and a first cap... | 11/23/1999 |
| 5963352 | Linearization enhanced operation of single-stage and dual-stage electro-optic modulators A distortion circuit for linearizing third-, fifth- and seventh-order distortion components in a non-linear optical communications system includes at least one group of series connected diodes coupled to a common input terminal for receiving a signal sour... | 10/05/1999 |
| 5949822 | Encoding/decoding scheme for communication of low latency data for the subcarrier traffic information channel A communication system for communicating low latency data in a fading channel environment using a data structure having data frames modulated on a subcarrier signal and on a commercial radio channel bandwidth. Low latency data is updated relatively rapidl... | 09/07/1999 |
| 5930231 | Block spectrum receiver for a broadband communications system A communication system for coupling telephony or other signals to a broadband network such as a CATV network. The system transmits a multiplex of telephony signals in the forward band of the broadband network, with individual signals directed to an addres... | 07/27/1999 |
| 5923755 | Multi-service data receiver architecture A flexible architecture for a digital data receiver including a demultiplexer is provided which allows modular addition of data processors with low complexity and minimal memory requirements. The demultiplexer operates on a scalable frame-based multiplex ... | 07/13/1999 |
| 5914725 | Interpolation of pixel values and alpha values in a computer graphics display device Interpolating a low or medium resolution image to a higher resolution image using a pixel replication and averaging technique. An overlay image having pixels of a first display resolution and a plurality of alpha blending values each indicating the degree... | 06/22/1999 |
| 5870474 | Method and apparatus for providing conditional access in connection-oriented, interactive networks with a multiplicity of service providers A control system provides secure transmission of programs, including at least one of video, audio, and data, between a service provider and a customer's set top unit over a digital network. Program bearing data packets are recieved in a first network prot... | 02/09/1999 |
| 5854840 | Data transmission protocol method and apparatus A data communications protocol for single path media having low data error rate requires the generation of a data packet with a start code field having a predetermined pattern, a byte count field for defining a data field having a maximum predetermined le... | 12/29/1998 |
| 5805042 | Radio frequency low hum-modulation AC bypass coil A radio frequency choke for use in a cable television transmission and distribution circuit is disclosed. The radio frequency choke comprises a core of zinc-ferrite material as provided by MMG/NEOSID, Ltd., part number 31P0250012, and a wire coil wound ar... | 09/08/1998 |
| 5790806 | Cable data network architecture A cable data network architecture includes a master head-end, at least one distribution hub connected to the master head end via a first communication link, and one more more user modems connected to the distribution hub(s) via a second communication link... | 08/04/1998 |
| 5790523 | Testing facility for a broadband communications system A test system for evaluating the operating state of a headend of a broadband communications network for communicating telephony signals between a telephony system and subscribers of communications services. Modulators at the headend transmit telephony sig... | 08/04/1998 |
