| Patent Number |
Title Of Patent |
Date Issued |
| 6697485 |
Data signal attenuator and systems and methods for using same |
February 24, 2004 |
| The present invention provides apparatus and methods for attenuating signals received from a source over a data transmission line, having an unknown resistance, to achieve optimized signals in various data terminal and data communications equipment. In a preferred embodiment, a resistor |
| 6697464 |
System and method for interfacing a modem's digital interface to a PBX telephone |
February 24, 2004 |
| The present invention is directed to a novel system and method for connecting and interfacing a communications device, such as a modem, to a two-wire telephone line via a telephone base set (e.g., PBX or PBX-like), thereby allowing for data communications on the telephone line. The modem |
| 6697354 |
Method and system for distributed network address translation for mobile network devices |
February 24, 2004 |
| A method and system for distributed network address translation for mobile network devices. A mobile network device requests one or more locally-unique ports with a Port Allocation Protocol from a second network device on a first network to identify the first network device on the fi |
| 6697339 |
High availability spanning tree with rapid reconfiguration with alternate port selection |
February 24, 2004 |
| An improvement to the spanning tree protocol provides for identifying a port on the bridge in the alternate port role which qualifies as a candidate root port. Upon an event causing a topology change resulting in a particular port changing from the candidate root port role to the root |
| 6694388 |
Dynamic queuing system incorporating multiple queues sharing a single memory |
February 17, 2004 |
| A dynamic queuing system wherein a single memory is shared among a plurality of different queues. A single memory, termed a queue memory, is by ally shared by one or more queue. The queue memory is divided into a plurality of memory blocks that we initially empty. An empty list funct |
| 6694369 |
Tag echo discovery protocol to detect reachability of clients |
February 17, 2004 |
| A method for detecting reachability of client computers communicatively coupled in a computer network to a server computer. A plurality of identifier tags are resident in the memory of the server. The server generates a data packet comprising an I.C.M.P. echo packet and selects a fir |
| 6694360 |
Multi-mode network interface having loadable software images |
February 17, 2004 |
| A multi-mode network interface adapter includes a diagnostic mode, a sleep mode and a run-time mode. The network adapter enters the diagnostic mode at least in response to a power-up signal and validates the operation of predetermined network adapter functions. In the sleep mode, the net |
| 6693997 |
Host computer digital signal processing system for communicating over voice-grade telephone chan |
February 17, 2004 |
| A conventional computer is coupled to an analog telephone transmission link by means of an analog/digital conversion interface adapter. Modem transmission is accomplished by performing the modulation and demodulation functions digitally in the computer's existing processor which executes |
| 6691256 |
Network problem indication |
February 10, 2004 |
| Network supervising apparatus, computer program, and method of supervising a network comprising: applying an algorithm to information relating to the devices of the network to provide a stress value, comparing the stress value with a predetermined limit, retrieving graphic symbol s |
| 6691161 |
Program method and apparatus providing elements for interrogating devices in a network |
February 10, 2004 |
| In a network supervising apparatus a program suitable for interrogating, in a network, a selected device of a large number of possible devices in respect of at least one functionality of the device (e.g. topology or sizing) comprising: a plurality of directories of elements, each elem |
| 6691147 |
Method and apparatus supporting network communications |
February 10, 2004 |
| One embodiment of the invention includes a method of managing network communications in a network device. The network device includes software components and modules. Some of the components control the interaction between modules, while other components perform specific functions for |
| 6690721 |
Method for asymmetric digital subscriber line modem recovery from insufficient transmit power |
February 10, 2004 |
| A method for recovering from an excessive power cutback in a splitterless asymmetric digital subscriber line modem. The modem may apply a power cutback to enable simultaneous use of the modem and a telephone. The modem determines if the modem's power after the cutback is sufficient to su |
| 6690666 |
Packet modulation for DSL |
February 10, 2004 |
| The subject invention defines the details of packet based DSL modulation. The invention claims a method for minimizing crosstalk generation by specifying a duty cycle for bursted carrier data traffic and a method of providing opportunistic echo canceller training. In this way the present |
| 6687751 |
Multi-point link aggregation spoofing |
February 3, 2004 |
| A system with at least one, and preferably at least two, end devices that operates according to a point-to-point protocol such as the IEEE standard 802.3ad. The two end devices communicate with each other through a trunk cluster formed from a plurality of cluster devices. Each of the clu |
| 6684258 |
Stackable ring network including burst transmission of data packet |
January 27, 2004 |
| A stackable network unit which can form a ring with other units has a master mode in which it can place packets on the ring, so that they can be ultimately forwarded from other units, and a repeat mode in which it can make a request for transfer of mastership of the ring, inserting bits |
| 6683882 |
Method and system for directing transmission of IPX control packets to influence reception of IP |
January 27, 2004 |
| A method and system for directing transmission of internetwork packet exchange (IPX) control packets to influence reception of IPX data packets. Specifically, one embodiment of the present invention includes a method for directing transmission of an internetwork packet exchange (IPX) |
| 6683875 |
Network switch including restriction of source address look-ups based on receive queue length |
January 27, 2004 |
| A network switch which can perform in respect of addressed data packets source address and destination address look-ups in a forwarding database includes a control which inhibits the performance of source address look-ups if the length of a respective receive queue of packets is greater |
| 6681252 |
System and method for interconnecting portable information devices through a network based telec |
January 20, 2004 |
| A personal information device (PID) is coupled to an IP Telephony phone in order to provide end-to-end connectivity to another PID through a network. The architecture disclosed includes a pair of internet-enabled phones that are able to establish a call session using a Session Initiation |
| 6681244 |
System and method for operating a network adapter when an associated network computing system is |
January 20, 2004 |
| A system for operating a network interface adapter when an associated network computing system is in a low-power state. The system includes a host executing an operating system (OS) and having a host OS absent state while operating in the low-power state and a host OS present state while |
| 6680940 |
System for transporting ethernet frames over very high speed digital subscriber lines |
January 20, 2004 |
| An apparatus for and method of encapsulating Ethernet frames over a Very high speed Digital Subscriber Line (VDSL) transport facility. 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 |
| 6680917 |
Spanning tree with rapid propagation of topology changes |
January 20, 2004 |
| Modifications to the spanning tree algorithm allow bad news to propagate quickly by providing that protocol entities on bridges process inferior information sent by the designated bridge for each LAN. In addition, bridges use per port hello timers to stimulate information propagation, |
| 6680908 |
Network switch including bandwidth allocation controller |
January 20, 2004 |
| A network switch includes a plurality of receive ports for receiving addressed data packets and a plurality of transmit ports for forwarding the addressed data packets and structure responsive to data in said the packets for directing received packets to the transmit ports. In respect |
| 6678728 |
Method and apparatus for automatically loading device status information into a network device |
January 13, 2004 |
| A method and apparatus for automatically loading device status information into a network device. One embodiment comprises an apparatus in a network device, wherein the network device enters a sleep state under particular conditions. In one embodiment, the apparatus is for communicating |
| 6678277 |
Efficient means to provide back pressure without head of line blocking in a virtual output queue |
January 13, 2004 |
| A plurality of Buffer Management (BM) modules or chips communicate through each other through an interconnect. The BM modules receive packets from other parts of the network or external circuitry. These incoming packets are stored in an ingress pool. Data packets that a BM module receive |
| 6678250 |
Method and system for monitoring and management of the performance of real-time networks |
January 13, 2004 |
| Gateway routers for real-time networks have the ability to collect delay, loss, and jitter statistics on a per-connection basis. It is possible to use this information not only to monitor the quality of individual voice calls and other real-time connections, but also to evaluate the over |
| 6675308 |
Methods of determining whether a network interface card entry within the system registry pertain |
January 6, 2004 |
| Methods of determining whether a network interface card entry within the system registry of a Windows.TM.-based operating system pertains to "real" physical hardware or to a "virtual" device. In one embodiment of the present invention, the method includes the steps of: (1) opening the |
| 6675234 |
Method of detecting TCP/IP bindings of installed network interface cards present in a computer s |
January 6, 2004 |
| The present invention provides a method for detecting TCP/IP (Transmission Control Protocol/Internet Protocol) bindings for Network Interface Cards (NICs) installed on Windows 95.TM. and Windows 98.TM. operating systems with a VPN (Virtual Private Network) client present. More particular |
| 6675218 |
System for user-space network packet modification |
January 6, 2004 |
| A system for user-space packet modification, including a set of kernel code and a user-level application programming interface (API). The system facilitates creation of a special socket for passing packets between kernel space and user space. The system in turn facilitates creation and |
| 6674844 |
System for providing modem access via an IR interface in a PBX |
January 6, 2004 |
| A telephone set of a telephone system is provided with an infrared interface. This infrared interface is able to communicate with an infrared port on a local computer. The computer is configured to send data to the infrared port, and receive data from the infrared port, in the same manne |
| 6674810 |
Method and apparatus for reducing peak-to-average power ratio in a discrete multi-tone signal |
January 6, 2004 |
| A method and apparatus for reducing peak-to-average power ratio in a discrete multi-tone signal. A shaping signal is generated and added to a discrete multi-tone signal to be transmitted. The shaping signal includes tones that are outside a transmission band assigned to the discrete |
| 6674794 |
System and method for sampling phase adjustment by an analog modem |
January 6, 2004 |
| A system and method for adjusting the phase of the analog signal produced by an analog modem connected to a digital modem over a telephone network. The digital portion of the telephone network is locked to the network clock, and the modems have no control over the sampling timing or rate |
| 6674745 |
Method and system for mapping phone numbers to IP addresses |
January 6, 2004 |
| A system for automatically populating an IP telephony address mapper with mapping information for an IP telephony gateway or other device. A self-registering gateway is configured to automatically provide an address mapper with mapping indicia defining the IP address of the gateway and t |
| 6674743 |
Method and apparatus for providing policy-based services for internal applications |
January 6, 2004 |
| A packet-forwarding device for providing policy-based services has at least a first interface, a second interface, and a packet forwarder for forwarding external packets between the first and second interfaces. The packet-forwarding device also runs internal applications that may be |
| 6674652 |
Integrated shield wrap |
January 6, 2004 |
| An integrated shield wrap suitable for use in an electronic device including electronic circuitry. The integrated shield wrap includes an insulator section composed of an electrically insulative material, as well as a shield section joined to the insulator section and composed of an |
| 6667983 |
Scaleable priority arbiter for arbitrating between multiple FIFO entry points of a network inter |
December 23, 2003 |
| A scaleable priority arbiter for arbitrating between multiple FIFO entry points of a network interface card (NIC). The circuit provides a separate FIFO entry point circuit within the NIC for each data packet priority type. Exemplary priority types, from highest to lowest, include iso |
| 6665748 |
Specialized PCMCIA host adapter for use with low cost microprocessors |
December 16, 2003 |
| Apparatus and method for providing DMA transfers between an adapter card with or with out DMA capabilities and a system CPU with DMA capabilities. An adapter DMA controller circuit resides between the system CPU and the adapter card. This adapter DMA controller allows the system to run i |
| 6665543 |
Antenna extraction on removal of stylus for handheld device |
December 16, 2003 |
| An antenna configuration for storing and deploying an antenna used with a hand-held wireless device, and method thereof. The device housing has a molded opening for holding a stylus element used with the device. The antenna is also stored in the housing within the molded opening. When th |
| 6665362 |
Digital receive phase lock loop with phase-directed sample selection |
December 16, 2003 |
| PLL error margin is improved by a half clock of the internal PLL clock by resolving the ambiguity between the two samples nominally centered about the pulse center point. This is achieved by intelligently choosing between the two samples nearest the pulse center by exploiting information |
| 6665275 |
Network device including automatic detection of duplex mismatch |
December 16, 2003 |
| A network device which is for use in an Ethernet packet-based communication system has at least one port which is capable of auto-negotiation to select between half duplex and full duplex working on a link to which the port is connected. The device includes means for monitoring the exist |
| 6662332 |
Interleaver for burst error correction |
December 9, 2003 |
| A method and apparatus for detecting the location of burst errors in serially transmitted data or reducing the susceptability to burst errors in the serially transmitted data. Successive received data words have bits selectively interleaved over a plurality of interleaved data words via |
| 6662135 |
Method and apparatus for reflective mixer testing of a cable modem |
December 9, 2003 |
| A method and apparatus for performing an operability test on a communications system device such as a cable modem is provided. The testing method comprises the steps of providing a set of output test data to the communications system device being tested, and generating an output sign |
| 6662119 |
Method and apparatus for monitoring connector degradation |
December 9, 2003 |
| A line card connectable to a backplane connector includes a connector. The connector includes connector terminals, a subset of which are connected to an insertion monitoring circuit. The insertion monitoring circuit includes a power conductor connected to a first terminal of the subset. |
| 6661880 |
System and method for embedding digital information in a dial tone signal |
December 9, 2003 |
| Systems and methods for embedding, detecting and extracting access information from a dial tone of a private branch exchange system. The access information is embedded at the zero crossings of the dial tone. This has a minimal effect on the audible quality of the dial tone. A connect |
| 6658537 |
DMA driven processor cache |
December 2, 2003 |
| The present invention provides a mechanism whereby caching operations, such as prefetch and copyback operations, can be initiated by an external direct memory access (DMA) controller. This allows the DMA controller to govern the inclusion as well as exclusion of data from a processor cac |
| 6658098 |
Power transfer apparatus for use by network devices including telephone equipment |
December 2, 2003 |
| One embodiment of the invention includes an apparatus for providing electric power to a telephone across a transmission line where the telephone is coupled to a network device. A power and data coupler ("the coupler") is coupled to one end of the transmission line. The transmission l |
| 6657991 |
Method and system for provisioning network addresses in a data-over-cable system |
December 2, 2003 |
| A method and system for provisioning network addresses in a data-over-cable system. Provisioning of network addresses allows multiple "always-on" network devices with multiple associated devices to be used on a data-over-cable system with a limited public network address pool. The "a |
| 6654792 |
Method and architecture for logical aggregation of multiple servers |
November 25, 2003 |
| A system and method are shown for multiple network devices to operate as a single logical entity for serving tunnel connections. A cluster master device is connected to a multiple network devices through a local area network (LAN). The cluster master device is also connected to a wide ar |
| 6654463 |
Round trip delay estimator and compensator for the echo canceller |
November 25, 2003 |
| Methods and systems pertaining to estimating and compensating for a round-trip or flat delay portion of an echo channel characteristic in an echo canceller are provided. According to a particular method, a filter coefficient vector of an adaptive filter that models the echo channel c |
| 6654461 |
Synthesized telephone line ring signal impedance termination |
November 25, 2003 |
| Provided is a circuit for terminating a ring signal of a telephone network. A physical impedance is combined with a synthesized impedance to produce an impedance having a magnitude substantially equal to the ring termination impedance of a telephone network. The synthesized impedance is |
| 6654387 |
Method for network address table maintenance in a data-over-cable system using a network device |
November 25, 2003 |
| A method and system for network address maintenance in a data-over-cable system. The method includes determining whether a network device, such as a cable modem, registers in a timely manner. When updating network address tables, such as Address Resolution Protocol tables, a time value i |
