| Patent Number |
Title Of Patent |
Date Issued |
| 6611868 |
Method and system for automatic link hang up |
August 26, 2003 |
| Methods and systems pertaining to automatically and locally terminating a telephone dial-up connection to a data network are presented as an alternative to an inactivity timeout set by the cable television network headend. A cable modem in a data-over-cable system with telephony return |
| 6611580 |
Method and system for adaptively adjusting modem operating characteristics |
August 26, 2003 |
| A method and system for adaptively adjusting modem operating characteristics is disclosed. A modem includes a line interface circuit and a controller. The modem is programmed (such as by user-input) with an indication of a location (e.g., country or region) where the modem is operati |
| 6611538 |
Data transmission synchronization system |
August 26, 2003 |
| An apparatus and method for providing synchronization in a data transmission system via the use of a short cyclic synchronization sequence inserted in the header of cells to be transmitted. A 2-bit sync sequence is inserted at the beginning of the header in each cell. At the receiving |
| 6611525 |
Apparatus for and method of learning MAC addresses in a LAN emulation network |
August 26, 2003 |
| An apparatus for and a method of learning MAC addresses in a Local Area Network (LAN) Emulation (LANE) network implemented over an Asynchronous Transfer Mode (ATM) network. The LEC or LES is adapted to detect when the ATM address associated with a MAC address is no longer valid. Once an |
| 6611520 |
Inhibition of underrun in network switches and the like for packet-based communication systems |
August 26, 2003 |
| A multi-port data communication device includes a common central memory through which all data packets must pass. Packet data is written to and read from the common memory space in bursts in response to receive write requests and transmit read requests. A transmit read request for a firs |
| 6609197 |
Method and system for secure emergency access to network devices |
August 19, 2003 |
| Methods and system for providing secure emergency access to network devices. The methods and system described herein can be used to provide secure emergency access to network devices such as routers, telephony switching hubs, etc. Secure emergency access helps close security holes fo |
| 6608864 |
Method and apparatus for fault recovery in a decision feedback equalizer |
August 19, 2003 |
| A method and apparatus for frequency domain equalization. The method and apparatus are particularly well suited for use in a receiver in a multicarrier transmission system that has predetermined symbols periodically embedded in the transmissions, such as in an ADSL system. The equali |
| 6608834 |
System for encapsulating Ethernet frames over very high speed digital subscriber lines |
August 19, 2003 |
| An apparatus for and method of encapsulating Ethernet frame data in Very high speed Digital Subscriber Line (VDSL) frames. The VDSL frames are transmitted over a point to point VDSL link where they are subsequently extracted and forwarded as standard Ethernet frames. The VDSL facility |
| 6608812 |
Trunk arrangement in a computer network with intra trunk switch connections |
August 19, 2003 |
| A trunk switch of a trunk cluster for connecting a plurality of edge devices to each other, where each edge device can communicate with all the other edge devices through all of the trunk switches. Each trunk switch contains an intra cluster port and intra cluster links 35 connect the |
| 6606709 |
Secure system for remote management and wake-up commands |
August 12, 2003 |
| A security feature is added to the Wake On LAN packet protocol, and an extensible mechanism is provided allowing for other commands and options to be specified within the Wake On LAN packet. The protocol allows for signaling power management circuits in a host computer in response to |
| 6606327 |
Method to dynamically adjust the maximum back off time of an ethernet controller in a half duple |
August 12, 2003 |
| A method to dynamically adjust the maximum back off time of an Ethernet controller in a half duplex network. Specifically, one embodiment of the present invention includes a method for providing priority to a peripheral component (e.g., half duplex Network Interface Card) in a congested |
| 6606321 |
Method of establishing MPOA shortcut virtual channel connections |
August 12, 2003 |
| A method of establishing calls between an ingress MPC (the calling party) and an egress MPC (the called party) in MPOA enabled ATM based networks. The call establishment method utilizes the call request SETUP, CONNECT and CONNECT_ACK messages in creating the shortcut VCC between ingress |
| 6603811 |
Low complexity frequency domain equalizer having fast re-lock |
August 5, 2003 |
| A low-complexity frequency domain equalizer having fast re-lock capabilities for use in a DMT transceiver. The transceiver includes a modulator that utilizes DMT modulation methods for communication over the transmission medium, a demodulator for receiving DMT signals, and a channel |
| 6603741 |
Monitoring of connection between network devices in a packet-based communication system |
August 5, 2003 |
| The invention concerns the establishment of the rate of transmission of data between two network stations by means of auto-negotiation. The execution of an auto-negotiation sequence by a state machine is counted and if the number of executions of the sequence exceeds a threshold, the |
| 6603299 |
Frequency locked loop speed up |
August 5, 2003 |
| A method in a communication circuit recovers a clock signal. A voltage controlled oscillator is initialized by supplying a predetermined.number of pulses to a charge pump coupled to the voltage controlled oscillator so as to initialize the voltage controlled oscillator to near an operati |
| 6601180 |
Method and system for providing link detection to a PC Card for power management |
July 29, 2003 |
| A method and system for providing link detection to a PC Card for power management. Specifically, one embodiment of the present invention includes a method for reducing power consumption by a peripheral component coupled to a host computer. For instance, the method includes the step of |
| 6601101 |
Transparent access to network attached devices |
July 29, 2003 |
| The present invention relates to transparent access to network attached devices, such as network attached storage devices, Web servers or database servers. In particular, the present invention provides hand-off protocols that are transparent to a network client, with the advantage that p |
| 6600755 |
Link technology detection in multiple speed physical links |
July 29, 2003 |
| The invention concerns an improvement to an auto-negotiation process for a link between network devices and in particular the avoidance of ambiguity when signals at a higher rate, such as 100BASE-Tx scrambled idle signals, resemble signals at a lower rate, such as 10BASE-T link pulses. A |
| 6599152 |
Contact pin design for a modular jack |
July 29, 2003 |
| A communications card allows computers to be electrically connected to electronic devices and communications systems. The communications card includes a modular jack with a plurality of contact pins. The contact pins include a plug engaging portion that does not include any sections that |
| 6597151 |
Portable auxiliary battery pack for extended use and recharging of personal digital assistants |
July 22, 2003 |
| A portable auxiliary power source system and method of the present invention facilitates extended portable use of a handheld computer without being unconnected to a fixed power source. A present invention portable auxiliary power source system is mobile and accommodates energy resources |
| 6594707 |
Smart communication agent |
July 15, 2003 |
| A method for transmitting a data packet from a computer system to an external device, where the computer system and the external device communicatively coupled by an external connector. Various types of external connectors may be used depending, for example, on whether the connection |
| 6594696 |
Network management apparatus and method employing "object tips" for the display of detailed data |
July 15, 2003 |
| A network management apparatus is described which includes a port for connecting to a network for receiving management data from network devices on the network. The network management apparatus includes a processor for processing the received management data and for determining substanti |
| 6594283 |
Network communication device |
July 15, 2003 |
| A network communications device is arranged to have a fast throughput of data packets. This is achieved by recognising that, in protocols such as Ethernet, the first symbols in a data packet do not carry any data and therefore do not necessarily require to be properly carried through a |
| 6594272 |
Simple wireless network with store and forward methods incorporating anti-looping codes |
July 15, 2003 |
| A plurality of wireless nodes in a network, such as elements of a residential or office home computer system, security system, HVAC or sprinkler system, or the like, communicate with each other over a radio frequency channel. A node generates a packet and transmits it to all the othe |
| 6594270 |
Ageing of data packets using queue pointers |
July 15, 2003 |
| A packet memory system including a memory space having a multiplicity of addressable memory locations for the storage of data packets, pointer control means for generating a write pointer which progressively defines where data is to be written to the memory space and a read pointer which |
| 6594235 |
Method of triggering reroutes in an asynchronous transfer mode network |
July 15, 2003 |
| A method of triggering reroutes in an ATM network based on a call optimization value being reduced beyond a predefined threshold. The method utilizes a signaling element in the SETUP message called a PNNI optimization reservation signaling element that includes an optimization type, |
| 6594231 |
Method and apparatus for configuration of stackable units in packet-based communications systems |
July 15, 2003 |
| A stackable network unit comprises a `down` port and an `up` port, an arbitration path for data packets from the down port to the up port, a repeat path for data packets from the up port to the down port, a link detector for detecting tile absence of another operative unit connected to |
| 6591317 |
Queue incorporating a duplicate counter per entry |
July 8, 2003 |
| A queue having a `duplicate` counter associated with each entry whereby duplicate data is not stored in the queue. Before data is placed in the queue, the queue is searched for an entry matching the data to be written. If a match is found, the duplicate counter associated with the entry |
| 6590972 |
DTMF detection based on LPC coefficients |
July 8, 2003 |
| A system and method for DTMF tone detection receives an input signal. The input signal includes a DTMF tone. The DTMF tone has a first frequency and a second frequency. An initial first frequency and an initial second frequency of said DTMF tone are selected by calculating a plurality of |
| 6590861 |
Combining virtual local area networks and load balancing with fault tolerance in a high performa |
July 8, 2003 |
| A method to send and receive data packets over a network of computer systems (e.g., a plurality of virtual local area networks [VLANs] compliant with the IEEE 802.1Q standard) using a server computer system adapted to have a plurality of network interface cards (NICs) coupled thereto |
| 6587476 |
Ethernet frame encapsulation over VDSL using HDLC |
July 1, 2003 |
| An apparatus for and method of encapsulating Ethernet frame data in HDLC frames for transmission over a VDSL transport facility. The HDLC frames are transmitted over a point to point VDSL link where they are subsequently extracted and forwarded as standard Ethernet frames. The VDSL f |
| 6587467 |
Virtual channel multicast utilizing virtual path tunneling in asynchronous mode transfer network |
July 1, 2003 |
| VC multicast implementation scheme utilizing VP tunneling over public ATM VP switched networks utilizing P2P and P2M connections to provide VC multicast capability to the attached private ATM networks. The border ATM VC switch in each private ATM network is connected to the ATM VP switch |
| 6587454 |
Network adaptor for telephone and data traffic |
July 1, 2003 |
| An adaptor supports supplying both telephone signals and data signals over a local area network medium such as a twisted pair wire for Ethernet. The adaptor can be incorporated into a telephone or a computer. The adaptor comprises a first packet port, second packet port and a telephone p |
| 6587433 |
Remote access server for multiple service classes in IP networks |
July 1, 2003 |
| A method and system for assigning priority or classes of service of messages delivered in a packet-based network. The method and system allows for implementation of differentiated classes of service according to the requirements of the network application or user. |
| 6587389 |
DRAM refresh command operation |
July 1, 2003 |
| A method and apparatus for refresh command operations on an SDRAM that avoids use of refresh commands requiring all banks of the SDRAM to be idle.Burst operation establishes command sequences that include Nop command intervals. Some of these Nop intervals are used to perform operations o |
| 6584490 |
System and method for providing call-handling services on a data network telephone system |
June 24, 2003 |
| A system and method for providing call handling services on a data network telephony system. A portable information device, such as a PDA, associated with a user contains the user's address and/or appointment book information. The address and/or appointment book information includes |
| 6581157 |
System and method for detecting and updating non-volatile memory on an electronic adapter board |
June 17, 2003 |
| A system for updating a non-volatile programmable memory in a device in a computing system with little or no user intervention. During initialization, a device driver is initialized. During initialization, the device driver checks the device version and compares the device version wi |
| 6581081 |
Adaptive size filter for efficient computation of wavelet packet trees |
June 17, 2003 |
| This invention describes a novel method and system that implements wavelet packet trees and inverse wavelet packet trees. A modified Recursive Pyramid Algorithm (RPA) is advanced by this invention. The algorithm uses a filter that changes its size at each given octave of the wavelet pack |
| 6580697 |
Advanced ethernet auto negotiation |
June 17, 2003 |
| A port on a network device engages in auto-negotiation on a network link during a first operational state to select a transmission mode, either half duplex or full duplex. If half duplex operation is selected, the port commences half duplex operation in a second operational state. During |
| 6580693 |
Methods and apparatus for detecting leaks in ATM networks |
June 17, 2003 |
| A method for detecting leaks in an ATM network, the method including the steps of a) creating an entity interconnection map including mappings of port interconnections among a plurality of network nodes, the plurality of network nodes includes a plurality of network endpoints and at leas |
| 6579108 |
Retractable jack |
June 17, 2003 |
| A retractable connector (44) includes a base (82) slidably positioned within an electronic card (42). The connector further includes an elongated channel (104) which provides the tracking of the base member between an extended position and a retracted position along an axis. The elon |
| 6577683 |
Method and device for generating signal constellations in PCM space for high speed data communic |
June 10, 2003 |
| A method and device for generating a constellation of Pulse Code Modulation (PCM) levels to represent digital data in a communication system. The constellation of Pulse Code Modulation levels are selected to have a total number of PCM levels and an upper power limit that optimizes noise |
| 6577653 |
Apparatus for and method of establishing a route utilizing multiple parallel segments in an asyn |
June 10, 2003 |
| An apparatus for and a method of establishing a connection between a source and destination node using multiple parallel paths. To establish a connection, bandwidth capacity on one or more parallel paths are aggregated and combined to form a route having a bandwidth larger than any s |
| 6577642 |
Method and system for virtual network administration with a data-over cable system |
June 10, 2003 |
| A method and system for virtual network administration with a data-over-cable system. A virtual networking tag and a network address (e.g., an Internet Protocol address) assigned by a network other than a data-over-cable system is used to provide a virtual network to one or more netw |
| 6577500 |
Wireless PC card |
June 10, 2003 |
| A wireless PC card for use in facilitating radio communications by a host computer in the context of a wireless computer network. The wireless PC card includes a housing conforming to a Type II PCMCIA form factor and having first and second extending portions which cooperatively define a |
| 6574694 |
Interrupt optimization using time between succeeding peripheral component events |
June 3, 2003 |
| A method and system for efficiently servicing a peripheral component event. In one embodiment of the present invention, peripheral component events are coalesced. The time interval between succeeding peripheral component events is determined. This time interval is then compared to a time |
| 6574414 |
Light transmission apparatus and method |
June 3, 2003 |
| A lightpipe apparatus and method includes a lightpipe body for transmitting light. The lightpipe body includes a receiving end portion for receiving the light and a display end portion. The lightpipe body further includes a first refractive surface disposed between the receiving end port |
| 6574232 |
Crossbar switch utilizing broadcast buffer and associated broadcast buffer management unit |
June 3, 2003 |
| A crossbar switching system utilizing broadcast buffering and broadcast buffer management to improve the transmission of variable length broadcast packets through the switch. Transmission of unicast traffic is halted and a plurality of broadcast packets are transmitted consecutively. Onc |
| 6574218 |
Method and system for spatially disjoint joint source and channel coding for high-quality real-t |
June 3, 2003 |
| A system and method for providing multimedia data streaming over a mixed network including a packet-switched and circuit-switched network. The multimedia source server performs both source coding to reduce the overall size of the data and channel coding to provide redundancy for packet |
| 6574110 |
Stackable slide mount system for modem devices |
June 3, 2003 |
| The present invention relates to an improved mounting for stacking modem devices. Each mounting includes stacking feet and stacking slots that permit the mountings to be securely stacked on top of one another. Each mounting is configured to receive a modem device. Each mounting also |
