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3COM Corporation Patents
Assignee:
3COM Corporation
Address:
Santa Clara, CA
No. of patents:
1426
Patents:


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Patent Number Title Of Patent Date Issued
6304574 Distributed processing of high level protocols, in a network access server October 16, 2001
A method and apparatus for distributing protocol processing among a plurality of computing platforms. Data communications equipment such as Remote Access Devices, Communication Servers, Terminal Servers, and Dial-up Routers provide single user or large-scale multiple user communicati
6301623 Computer network with a plurality of identically addressed devices October 9, 2001
A computer network, and preferably a network concentrator, with a bidirectional serial channel. A plurality of devices on the channel are identified by addresses. The devices are divided into device groups and a device in one group can have an address which is identical to a device in
6301352 Method and system for providing an alternative common channel signaling path October 9, 2001
A method and system for providing an alternate common channel signaling system path. The alternative signaling path that does not rely on the same hardware or software that is used for a primary signaling path. The alternative signal path allows network devices on a local area network to
6301229 Distribution of protocol processes from network elements to end stations October 9, 2001
A network intermediate device interacts with a remote network element and performs the control plane interactions for a communication protocol used on a network segment between the network intermediate device and the destination, and interacts with customer premises equipment CPE to offl
6301095 System and method of distributing power to a plurality of electronic modules housed within an el October 9, 2001
A system for distributing power to a plurality of electronic modules housed within an electronics cabinet includes an electronics cabinet and at least one power filter mounted to the electronics cabinet. At least one electronic module is housed within the electronics cabinet. A first bus
6298067 Distributed arbitration scheme for network device October 2, 2001
A distributed arbitration scheme for a network. Ports in a network device determine which port in a set of ports may broadcast a packet onto a bus in the network device. A method of transmitting data between a set of ports sharing a bus in hub is described. The set of ports includes a fi
6295554 System and method for communicating with a telco-return cable modem as a single communications d September 25, 2001
A system and method for communicating with a cable modem having an RF interface for downstream data and a PSTN interface for upstream data. The system uses a cable modem driver that receives commands for sending and receiving data. The cable modem driver interfaces to the RF interface to
6295534 Apparatus for maintaining an ordered list September 25, 2001
An apparatus for maintaining an ordered list which can store any type and number of data items. The ordered list can be implemented in hardware so as to enable fast, efficient maintenance of an ordered list of data. The data to be stored in the list is stored as a plurality of data cells
6295281 Symmetric flow control for ethernet full duplex buffered repeater September 25, 2001
Symmetric flow control in a buffered repeater having responsiveness to flow control frames. An Ethernet full duplex buffered repeater according to the present invention includes an internal arbitration mechanism allowing receive FIFOs of respective receive ports to transmit data over a l
6295208 Backplate for securing a circuit card to a computer chassis September 25, 2001
A backplate is provided having an elongated section with one or more tab sets. Each tab sets includes a first and second tab that extends from the elongated section. The first and second tabs are laterally spaced apart and longitudinally offset with respect to each other to define a slot
6295207 Retractable and removable extensions with edge plated PCB's in thin-profile electronic devices September 25, 2001
The present invention relates to a removable and/or retractable extension for an electronic apparatus which is electrically connected to the apparatus through electrically conductive surfaces which are formed on the edge of a PCB. Some preferred embodiments of the present invention c
6293706 Dual-mode socket connectors September 25, 2001
A socket connector has a single socket including fiber optic terminals 10 and wire terminals 12 and is adapted to receive alternatively in respectively inverted positions either a first plug connector for cooperation with the fiber optic terminals or a second plug connector for coope
6292839 Method and system for reflexive tunneling September 18, 2001
A method and system for reflexive tunneling. One aspect of the invention includes a method for reflexive tunneling using hidden virtual tunnels. A first peer application sends data packets to a second peer application and intermediate network devices create a hidden virtual tunnel to sen
6292838 Technique for automatic remote media access control (MAC) layer address resolution September 18, 2001
A system and method for determining a MAC layer address of a network interface on a remote device, based on an IP address associated with the same network interface on the remote device. The disclosed system identifies an internetworking device, for example a router, that is attached
6292545 Apparatus and method for detecting the source of a telephone tone signal September 18, 2001
A telephone answering apparatus for detecting the source of a telephone tone signal includes a signal detector for detecting the telephone tone signal, a memory storage device for storing a message, and a controller for stopping playback of the message in response to the telephone tone
6292373 Electromagnetic interference (EMI) shield for a disk drive September 18, 2001
An apparatus and method for shielding electromagnetic interference (EMI) for a disk drive includes a body portion for operatively securing to the disk drive. The body portion includes a flange portion. The flange portion includes a plurality of tab portions that substantially surround a
6289370 Platform independent enhanced help system for an internet enabled embedded system September 11, 2001
A system for providing help contents to a client system on behalf of a web enabled embedded system. A help file is loaded onto a server system, and the location of the server system is communicated to the embedded system. A client system requests a page of data stored in the embedded sys
6289130 Method for real-time lossless data compression of computer data September 11, 2001
A data compression scheme as described which improves upon and is compatible with the V.42bis data compression standard of the International Telecommunications Union (ITU). The data compression scheme provides an efficient algorithm to determine when as well as how to efficiently switch
6289097 Method and system for a redirect repeater providing network access September 11, 2001
A method and device for providing telephone subscribers serviced from digital loop carrier ("DLC") systems access to a computer network. The described device includes a redirect repeater with the capability to redirect multiplexed channels of the DLC to a computer network. The redire
6289017 Method of providing redundancy and load sharing among multiple LECs in an asynchronous mode netw September 11, 2001
A method of providing redundancy and load sharing among multiple LECSs in an ATM network. The method creates and maintains a plurality of lists on each of the switches. Each list is an ordered set of LECSs that combine to create an active LECS list. The network is divided into a pluralit
6286105 Method for implementing link-level security to enforce access privileges September 4, 2001
A method and architecture for implementing link level security to enforce access privileges between a calling modem and an answering modem over a communication channel during a communication session in a modem employing a communication protocol capable of modulation modification. Securit
6285709 Error filtering in a hybrid equalizer system September 4, 2001
Apparatus and methods of compensating for distortions introduced in communication signals received over a telephone network. An adaptive linear equalizer (LE) pre-filter is used for filtering incoming sampled communication signals received via the telephone network transmission mediu
6285707 Temperature compensation for communications cards September 4, 2001
Methods and apparatus for providing temperature compensation for a communications card, such as a modem or network card, to minimize retrain sequences between the communications card and another communications card during periods of temperature build-up within the communications card are
6283775 Electrical connector with automatic switching between multiple devices September 4, 2001
The present invention relates to an electrical connector for connecting combination electronic apparatus, which comprise a plurality of internal electronic devices, to networks or other devices. The connector of the present invention comprises a novel switching mechanism which selects
6283773 Media jack with external fuse access September 4, 2001
A jack for facilitating an electrical communication between a media plug and an electrical apparatus includes a low profile slide plate having an aperture extending therethrough. The aperture is configured to receive a media plug. A contact pin projects from the slide plate into alignmen
6282626 No stall read access-method for hiding latency in processor memory accesses August 28, 2001
The memory space accessible by a processor is partitioned such that multiple memory regions map to the same physical memory. Processor accesses in one of the regions are regarded as normal accesses, and are satisfied from the memory or a read buffer. If memory access is required, the
6282586 Method in an operating system, a method and system for supporting multiple hardware devices from August 28, 2001
In an operating system for facilitating the execution of a communication application typically comprised of a single port interface, a method for facilitating the interaction of the single port interface of the communication application with a plurality of hardware devices through the
6282238 Adapter card that selects between an ISDN interface and an analog modem interface August 28, 2001
A computer includes an adapter. The adapter includes an ISDN connection capable of communicating ISDN signals between the computer and a remote device. The adapter also includes an analog modem connection capable of communicating analog modem signals between the computer and the remote
6282177 Method and apparatus for dynamically controlling the bias current in a receiver in response to t August 28, 2001
A method and apparatus for minimizing the power consumed by a low-noise amplifier in a receiver portion of a full duplex transceiver when the transmit signal power of the transceiver as presented to the low-noise amplifier exceeds the receive signal power and would further cause the
6281432 Sheet metal component with depression August 28, 2001
A process is provided for providing a metal element and removing portions of the metal at a series of location at a section of the metal element. By removing portions of the metal element a plurality of webs are provided separating the holes where the material has been removed. The webs
6281425 Apparatus and method of recharging a handheld computing device using solar power August 28, 2001
An apparatus and method for recharging a handheld computing device using solar power is provided. A recharger housing includes a first slot for receiving a handheld computing device. A solar panel support member is slidably attached to the recharger housing. A solar panel is connected to
6279037 Methods and apparatus for collecting, storing, processing and using network traffic data August 21, 2001
Methods and apparatus for collecting, storing, processing and using data, such a RMON2 network traffic data, are described. Network traffic probes are identified and attempts are made to configure the identified probes to generate network traffic data sets which are as close to a presele
6278705 Integrated architecture to support a single system image across multiple network access servers August 21, 2001
The present invention provides a modular architecture for connecting a plurality of telephone lines to a computer network. The invention binds a plurality of network access servers together so that they form a single system image to clients dialing into the plurality of network access
6278608 Ventilation and cooling control system for modular platforms August 21, 2001
A platform for holding a plurality of modules or printed circuit boards wherein the platform or chassis contains shutters placed over airflow openings in the platform. The shutters are normally closed and are opened be the act of inserting a module into the platform. The shutters are in
6276965 Shielded I/O connector for compact communications device August 21, 2001
An input/output (I/O) media connector for a reduced sized communication cards. A metallic shield is wrapped substantially about the connector and secured to the connector by a plurality of pins integral with the connector. The shield has a plurality of tabs securely connected and gro
6275933 Security system for a computerized apparatus August 14, 2001
In order to boot a portable computer, a smart key is required to be inserted into a PCMCIA card of the portable computer. Firmware in the PCMCIA card verifies that a smart key has been inserted. The portable computer will boot only when two conditions are met. The first condition is
6275853 System and method for extending communications features using generic management information bas August 14, 2001
A system and method for managing a network using generic objects in a network device management information base (MIB). The generic objects may be used to communicate commands that perform tasks that are not addressed by the specific device objects in the MIB. The generic objects include
6275498 Extended PHY addressing August 14, 2001
A method and apparatus is disclosed for extending PHY addressing in a telecommunications device beyond the number of PHYS that may be directly addressed over a bidirectional serial management control bus using a management bus protocol employing a predetermined number of address bits
6273735 Rotating turret side-entry retractable jack August 14, 2001
An extendable/retractable media connector for extending from an electronic device such as a PCMCIA type-III card or other electronic device. The connector includes a slidable extendable/retractable frame having an aperture therein for physically receiving a media plug. The aperture f
6272129 Dynamic allocation of wireless mobile nodes over an internet protocol (IP) network August 7, 2001
A method is described of automatically locating and connecting a mobile wireless communications device to a packet-switched network such as the Internet. An Internet Protocol (IP) packet from a terminal on the network, destined for receipt by the mobile device, is received at a home agen
6272107 Method of path restoration in an ATM network utilizing point to point switched virtual circuits August 7, 2001
A method of path restoration in an ATM network which attempts to minimize the loss of cells in the event a node or a link fails. The method is suitable for failures in point to point Switched Virtual Circuits (SVCs) in ATM networks and makes use of the bi-directional properties of point
6269404 Virtual network architecture for connectionless LAN backbone July 31, 2001
Network traffic management is achieved based on automatically setting up a plurality of virtual networks (VNETs) within a single large virtual LAN. Multicast/broadcast traffic is confined to the VNET of the source, without imposing constraints on layer two addressing within the virtual L
6269401 Integrated computer system and network performance monitoring July 31, 2001
A method for monitoring communication performance in a communication network comprising computer systems communicatively coupled to each other with communication equipment. In one embodiment, a computer system of a communication network measures and time-stamps network performance st
6269099 Protocol and method for peer network device discovery July 31, 2001
A protocol and methods for peer network device discovery is presented. The peer discovery protocol includes a peer discovery marker than can be used with an existing networking protocol such as Transmission Control Protocol ("TCP") to discover peer network devices. The peer discovery pro
6269076 Method of resolving split virtual LANs utilizing a network management system July 31, 2001
A method for creating and resolving split VLANs in ATM networks. The method utilizes a Network Management System (NMS) and a standard management protocol such as SNMP. The method monitors the network by continuously polling all the devices in the network. Status related information c
6268999 Computer peripheral device with integral ground clip July 31, 2001
A computer peripheral device with an integral ground clip. In one embodiment, the present invention includes a substrate. The substrate has a ground signal receptacle location coupled thereto. The present embodiment further includes an enclosure which adapted to be coupled to the sub
6266732 Interrupt events chaining July 24, 2001
A method and system for efficiently servicing a peripheral component event. In one embodiment of the present invention, a peripheral component such as, for example, a network interface card generates a first interrupt upon the occurrence of a first peripheral component event. In the pres
6266367 Combined echo canceller and time domain equalizer July 24, 2001
A method and structure that reduces the computational requirements of both echo cancellation and time domain equalization in symmetrical transceivers. The structure exploits pole-zero modeling of both the echo and transmission path response in order to realize an improved level of sy
6266017 Retractable antenna system July 24, 2001
The invention discloses a retractable antenna system for wireless communication devices. The invention allows the entire antenna assembly, including ground plane and impedance matching circuitry, to be moved away from the wireless communication device and extend beyond any housing, such
6265930 Glitch free clock multiplexer circuit July 24, 2001
A clock selector circuit for selecting a single output clock signal from a multiplicity of input clock signals, each constituted by transitions between binary states, comprises a multiplicity of D-bistables each having a clock input coupled to receive the respective one of the input cloc
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