| Patent Number |
Title Of Patent |
Date Issued |
| 6742187 |
Upstream bandwidth allocation map (MAP)-initiated channel change method for data-over-cable syst |
May 25, 2004 |
| An upstream channel change for a cable modem in a data-over-cable system is achieved via an upstream bandwith allocation map message sent from a cable modem termination system to cable modems, instead of requiring an exchange of upstream channel change request and reply messages. The res |
| 6741586 |
System and method for sharing computer screens over a telephony network |
May 25, 2004 |
| A system and method for communicating screen display images on a computer to another computer using a telephony network. A screen share button on a data network telephone initiates a screen shot request to a first computer associated with the data network telephone. The first computer us |
| 6738935 |
Coding sublayer for multi-channel media with error correction |
May 18, 2004 |
| A method and apparatus for encoding and decoding data. A primary data channel comprising a parallel data word has a bit of a secondary data channel associated with the parallel data word. ECC bits are generated based upon the parallel data word and the monitor bit and the ECC bits are |
| 6735670 |
Forwarding table incorporating hash table and content addressable memory |
May 11, 2004 |
| A forwarding table comprising a combination of a hash table and a content addressable memory (CAM). The forwarding table combines a one way hash table and a small CAM to perform the forwarding information retrieval function. The CAM is used when an address cannot be found in the hash |
| 6735297 |
System for maintaining PBX license key information in the event of a hardware failure reducing M |
May 11, 2004 |
| A programmable telephone system including system software and system hardware. The system software includes instructions for operating the telephone system, and requires license information to operate. The system hardware includes a system specific memory and a system board. The system |
| 6735255 |
Correlation based method of determining frame boundaries of data frames that are periodically ex |
May 11, 2004 |
| A correlator for use in a timing recovery apparatus of a receiver in a multicarrier transmission system. The correlator locates the beginning of a data frame and initializes a pointer register with an address to a location within the receive signal buffer. Data is transferred to a signal |
| 6735210 |
Transmit queue caching |
May 11, 2004 |
| A computer network switch includes a receiving module for receiving packets, a packet memory with a plurality of buffer cells with each of the buffer cells having a buffer descriptor. A descriptor free pool lists available buffer descriptors that can be used for new incoming packets. A |
| 6732323 |
Method of selecting initialization parameters for multi-channel data communication with forward |
May 4, 2004 |
| The present invention includes alternative methods for selecting forward error correction parameters to be used in multi channel communications. Method embodying aspects of the present invention may include acquiring signal to noise ratio data for a set of communications channels, counti |
| 6732314 |
Method and apparatus for L2TP forward error correction |
May 4, 2004 |
| Method and apparatus of establishing an L2TP tunnel. A routing device of a first IP network is coupled to a public network and a routing device of the second private IP network is coupled to the public network. An L2TP tunnel is initiated and an IP address from an address space of the fi |
| 6732281 |
System and method for loading data onto carriers |
May 4, 2004 |
| A system and method for providing bit-loading enhancement is provided, including methods of determining an extended bit capacity for a plurality of carriers, wherein a first portion of the plurality of carriers is loaded and a second portion of the plurality of carriers is initially |
| 6732249 |
Host computer virtual memory within a network interface adapter |
May 4, 2004 |
| The present application is directed to a method and system for mapping a host computer address space into a network interface adapter (NIA) address space. A network interface processor contained within the NIA requests a memory allocation from the host computer. The host computer respond |
| 6731950 |
Cellular-based telephone connection system |
May 4, 2004 |
| An interface box links a user's cellular telephone with all the standard telephone extensions at the user's home or office. In this way, the portable cellular telephone is the interface between the user's telephone extensions and the telephone company. The interface box connects to the |
| 6731642 |
Internet telephony using network address translation |
May 4, 2004 |
| A system and method for Internet telephony between a caller station and a callee station are described. The caller station is connected to a first edge network via a first telephony interface, and the callee station is connected to a second edge network via a second telephony interface. |
| 6731633 |
Network unit including address hashing |
May 4, 2004 |
| A network unit includes a forwarding database which includes entries relating packet addresses to forwarding data and is operative to form linked chains of entries wherein the entries in a chain represent different packet addresses which are reduced by hashing to the same pointer for |
| 6731630 |
Flexible dial plan for a data network telephony system |
May 4, 2004 |
| A dial plan for a data network telephony system is provided. A variable-length-code scheme is used to assign communication numeral strings to user identifiers and/or device identifiers, such as SIP URIs (Universal Resource Identifier). The dial plan enables a user to enter a user ide |
| 6728808 |
Mechanism for optimizing transaction retries within a system utilizing a PCI bus architecture |
April 27, 2004 |
| A mechanism for optimizing transaction retries within a system utilizing a peripheral component interconnect (PCI) bus architecture. Specifically, one embodiment of the present invention includes a system which optimizes transaction retries issued by a PCI bus master device to a target d |
| 6728309 |
Method and apparatus for high speed data transmission over a four-wire subscriber line |
April 27, 2004 |
| Disclosed is an architecture and method for high speed transmission over a four-wire subscriber line. Each modem in the present invention includes a V.90 transmit section and a V.90 receive section. The V.90 transmit section is dedicated to transmitting data over one pair of a four-wire |
| 6724889 |
Method and system for line status indicators using line side power |
April 20, 2004 |
| A power management circuit for use in a terminal interface device such as a modem which converts available line side power into usable power for use by the terminal interface device to activate a variety of line status indicators. These line status indicators signaling the off-hook statu |
| 6724736 |
Remote echo cancellation in a packet based network |
April 20, 2004 |
| An apparatus for and a method of remote echo cancellation in a packet based telephony system. Echo cancellation algorithms normally performed on the local end of a connection, are performed instead by the remote end of the connection. Alternatively, the echo cancellation algorithms are p |
| 6724723 |
Method of providing a signaling qualification function in a connection oriented network |
April 20, 2004 |
| A method of providing a qualification function and associated action function to be performed for a connection request or a group of connection requests. The invention is applicable to situations wherein it is desirable for the network to perform a specific action before, during and/ |
| 6724637 |
Apparatus and method for harnessing optical fiber to a circuit board |
April 20, 2004 |
| An apparatus and method for retaining a length of fiber optic cable to a circuit board includes a body portion. The body portion of the apparatus includes at least a pair of spaced legs extending from the body portion, each of the legs is adapted to be received in a mounting opening form |
| 6721787 |
System and method for wireless hot-synchronization of a personal digital assistant |
April 13, 2004 |
| A wireless hot-sync system includes a personal digital assistant (PDA) having a transceiver for communicating over a wireless link, a hot-sync server having a transceiver for communicating with the PDA over the wireless link and a network interface for communicating with devices on a |
| 6721394 |
Method for reducing noise from an asymmetric digital subscriber line modem |
April 13, 2004 |
| A method for reducing audible noise in a telephone from a splitterless asymmetric digital subscriber line modem. The modem examines the shape of the power spectrum of fast retrain signals both when the telephone is on-hook and off-hook. By comparing the spectra, in particular the slopes |
| 6721334 |
Method and apparatus for packet aggregation in packet-based network |
April 13, 2004 |
| A system and method for improving the efficiency of a packet-based network by using aggregate packets are described. One example method involves determining which network devices support aggregate packets. If a first packet is received on a route that supports aggregate packets, it is th |
| 6718493 |
Method and apparatus for selection of ARQ parameters and estimation of improved communications |
April 6, 2004 |
| The present invention includes a method for selecting appropriate forward error correction and automatic repeat request parameters for protection of a multicarrier communication channel. The multicarrier communication channel may be wired or wireless. Particular aspects of the present |
| 6718411 |
Asic system architecture including data aggregation technique |
April 6, 2004 |
| An architecture for a system on a chip wherein functional cores have wrappers for compatibility with a common bus system and the bus system includes aggregators for bus transactions of different speeds and/or bus widths. |
| 6718346 |
Generating summary data for a requested time period having a requested start time and end time a |
April 6, 2004 |
| Apparatus and method for use in a network of, for example, computers, for generating summary data, such as traffic summary information, from a plurality of data records, the data records having a different temporal basis, for example, one hour or one day or one week, and different start |
| 6717919 |
Imprinting method for automated registration and configuration of network devices |
April 6, 2004 |
| New network elements that are installed in a network are automatically configured using an imprinting process. In this process, when they are first installed and turned on they start listening for packets on the network. When a packet is received, the new network element "imprints" to |
| 6717914 |
System for probing switched virtual circuits in a connection oriented network |
April 6, 2004 |
| A system for probing one or more SVCs that enables a network manager station to setup a probe event in advance before a SVC is created. Upon the creation of the SVC, the data is captured and sent to the network management station without any further intervention required. In a first |
| 6714558 |
System for implementing network protocols between devices on a printed circuit board |
March 30, 2004 |
| A system enabling devices on a printed circuit board to communicate using network communication protocols over the communication medium provided on a circuit board. Disclosed are means for interfacing devices to differential traces on the printed circuit board such that a network com |
| 6711162 |
Method and apparatus for providing proxy service, route selection, and protocol conversion for s |
March 23, 2004 |
| A device, such as an ADSL modem, acts as a proxy for service endpoints in a data network by responding to service endpoint advertisement messages pursuant to Point to Point Protocol (PPP) over Ethernet (PPPoE), where the terminating equipment located at those service endpoints do not sup |
| 6711159 |
Load balancing among media gateways |
March 23, 2004 |
| A telephony system and method having a switch for analog voice and data signals that is connected to a first network, and a router for routing Internet Protocol packets that is connected to a second network using Internet Protocol addressing. The telephony system and method also incl |
| 6710704 |
Power transfer apparatus for concurrently transmitting data and power over data wires |
March 23, 2004 |
| Power supply current, sufficient to power a remote network device, is transmitted concurrently with a network data signal over a transmission line. A power-sourcing network device that can include a coupling circuit provides power and data to the remote network device. The coupling circu |
| 6708219 |
Method and system for dual-network address utilization |
March 16, 2004 |
| The methods and system described herein help the transition from Internet Protocol version-4 ("IPv4") networks to Internet Protocol version-6 ("IPv6") networks. Dual address allocation of IPv4 and/or IPv6 network addresses is provided via a dual protocol stack. Network devices may co |
| 6707799 |
Dynamic control protocol for frame relay fragmentation in support of real-time applications such |
March 16, 2004 |
| Frame Relay (FR) fragmentation control protocol for enabling FR access device and switches to support real-time traffic, such as VoIP and VOFR, enables communicating peers to negotiate dynamically for fragmentation operation and configuration parameters, as well as to terminate such an |
| 6704357 |
Method and apparatus for reconstruction of low frame rate video conferencing data |
March 9, 2004 |
| A method and apparatus for improving the playback quality of audio/video streams encoded for transmission using low frame rate motion compensated coding. When a transmitting system sends an audio/video stream encoded using low frame rate motion compensated waveform, a receiving system ma |
| 6704325 |
Method to recognize streaming memory aligned and non-memory aligned data patterns with optimal h |
March 9, 2004 |
| A method and system for efficiently handling a particular streaming data packet regardless of whether the streaming data packet has a first alignment or a second alignment. In one embodiment, the present invention receives a first portion of an incoming packet stream at a peripheral |
| 6704317 |
Multi-carrier LAN modem server |
March 9, 2004 |
| A gateway modem server device for a home LAN. The modem server includes a first transceiver that utilizes DMT modulation methods for communication over the local LAN, and a second transceiver for communication with the access infrastructure that utilizes POTS telephone services. The LAN |
| 6704292 |
Use of remote poll to facilitate determining network topology |
March 9, 2004 |
| Supervising a network (10), which network comprises a plurality of components (12, 13, 14) having ports at least some of which ports are connected by links to ports on other components, at least one component including means to ascertain the source addresses of the remote component o |
| 6704284 |
Management system and method for monitoring stress in a network |
March 9, 2004 |
| A system and method for providing a stress value representing the performance of a network comprising network devices is described. A raw data value for a monitored characteristic of a network device or link is obtained by the management system and compared with a predetermined thres |
| 6704282 |
VPN tunnel redirection |
March 9, 2004 |
| Virtual Private Network (VPN) tunnel redirection is accomplished by automatically redirecting tunnel initiator or network source for incoming call to another tunnel terminator or network destination according to traffic load, resource availability, or system reliability in VPN enviro |
| 6704016 |
Method and apparatus for the graphical presentation of selected data |
March 9, 2004 |
| A method graphically presents a selected group of data values of a series of data values in a predetermined presentation area. The largest data value within the selected group of data values is determined. A scaling factor for the determined largest data value to correspond with a latera |
| 6703954 |
Direct digital conversion of baseband signals to super-nyquist frequencies |
March 9, 2004 |
| Method and apparatus for shifting of a lowpass signal to a higher frequency and for precompensating distortion caused by a digital to analog converter (DAC). Higher frequency signals are generated by filtering the output of the DAC so that at least one of the replicas generated by the DA |
| 6701442 |
Power management circuit for selectively applying power to network monitoring circuitry which mo |
March 2, 2004 |
| A power management circuit for use in a peripheral module such as a network interface card is presented. The circuit facilitates low power network monitoring for `Wake On LAN` or `Plug In and Go` applications as well as for network-initiated configuration and operation of a peripheral or |
| 6701327 |
Merging network data sets comprising data acquired by interrogation of a network |
March 2, 2004 |
| A method for providing a data set relating to a network by merging a first data set relating to the network at a first time and a second data set relating to the network at a s second, later, time, said first data set comprising data acquired by interrogation of the network and other dat |
| 6701140 |
Digital receive phase lock loop with cumulative phase error correction and dynamically programma |
March 2, 2004 |
| A digital phase lock loop (PLL) for maintaining synchronization with the phase of a received data signal including a preamble and an information-containing data frame, by incrementing a state machine through an internal cyclic count, each cycle thereof including a center count tendin |
| 6700895 |
Method and system for computationally efficient calculation of frame loss rates over an array of |
March 2, 2004 |
| A method and system for selecting an optimal size of a jitter buffer in a real time communications system includes calculating a frame loss rate from packet arrival statistics. The packet arrival statistics include determining an average queue time a frame spends in a jitter buffer and |
| 6700871 |
Increased throughput across data network interface by dropping redundant packets |
March 2, 2004 |
| In a typical remote access application, such as access from the home to a packet-switched high speed network such as the Internet, the low-speed dial up connection to a network access is the main bottleneck in terms of the bandwidth and efficiency of transfer of data across the network a |
| 6700387 |
Systems and methods for impedance synthesis |
March 2, 2004 |
| The present invention synthesizes a prescribed impedance. The impedance is synthesized by generating a current having a value substantially equal to a voltage divided by a prescribed impedance. Sensing the line voltage and converting that sensed line voltage to its digital equivalent acc |
| 6697862 |
System and method for network address maintenance using dynamic host configuration protocol mess |
February 24, 2004 |
| A method for network address maintenance in a data-over-cable system. The method includes receiving a message containing a first network address, such as an Internet Protocol address, to be stored in a network address table, such as an Address Resolution Protocol table. If the first netw |
