| Patent Number |
Title Of Patent |
Date Issued |
| 6573868 |
Retractable antenna for electronic devices |
June 3, 2003 |
| A retractable antenna system is disclosed that enables electronic devices to engage in wireless communication. A preferred embodiment includes a retractable antenna disposed within a cavity in the electronic device and an actuating mechanism for selectively extending and retracting the |
| 6573729 |
Systems and methods for impedance synthesis |
June 3, 2003 |
| 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 |
| 6572384 |
Method and apparatus for interconnecting circuit cards |
June 3, 2003 |
| A method and system for interconnecting circuit cards is provided. Pins on a bus of a circuit card are grouped corresponding to each device on the card. Pins on the bus of the motherboard are grouped corresponding to each device on the motherboard. The groups of pins are matched with the |
| 6572156 |
Locking mechanism for an enclosure |
June 3, 2003 |
| A locking mechanism for an enclosure includes a top housing member and a bottom housing member having at least one latch portion. The top housing member includes at least one top housing deflecting tab portion for deflecting the latch portion. The bottom housing member includes at least |
| 6570884 |
Receive filtering for communication interface |
May 27, 2003 |
| An interface card for a network or other communication channel, with limited intelligence, is implemented using a relatively slower, and lower cost embedded processor, supported by dedicated hardware logic for the purposes of intercepting certain packets being received via the network or |
| 6570881 |
High-speed trunk cluster reliable load sharing system using temporary port down |
May 27, 2003 |
| A packet based high-speed communications mesh is disclosed including a plurality of switches trunked network interfaces including links connecting the switches to form a trunk cluster. Edge devices are connected to the trunk cluster via trunked links. The trunked links provide a phys |
| 6570848 |
System and method for congestion control in packet-based communication networks |
May 27, 2003 |
| A network switch including a port for the reception and transmission of data packets, and a receive buffer store connected to the port, detecting a predetermined state of fullness of the buffer store, initiating in response to the state of fullness the production of control frames for |
| 6570606 |
Method and apparatus for controlling transmission of media signals over a data network in respon |
May 27, 2003 |
| A method and apparatus for controlling the transmission of real-time media signals over a data network based on a triggering event associated with a participating teleconference station. This triggering event may be the presence or absence of motion, the presence or absence of sound, or |
| 6567859 |
Device for translating medium access control dependent descriptors for a high performance networ |
May 20, 2003 |
| A device for translating medium access control (MAC) dependent descriptors for a high performance network interface card. Specifically, one embodiment of the present invention includes a circuit for translating a medium access control descriptor from a first format into a second format. |
| 6567472 |
System and method for terminating a line by reflecting a scaled impedance |
May 20, 2003 |
| The present invention provides a line termination circuit for matching the characteristic impedance of a transmission line, or more generally, a network. The present invention receives the voltage as present on the transmission line and attenuates it such that circuit components rated fo |
| 6567463 |
Method and system for detecting analog and ADPCM links in a communication channel |
May 20, 2003 |
| A method and system for detecting analog and Adaptive Differential Pulse Code Modulation ("ADPCM") communication links in a communication channel is described. On an illustrative embodiment, the method include the steps of transmitting a signal with a D.C. offset value across the communi |
| 6567405 |
Method and protocol for distributed network address translation |
May 20, 2003 |
| A system for Distibuted Network Address Translation ("DNAT"). DNAT is used with small office/home office ("SOHO") networks or other legacy local networks that have multiple network devices using a common external network address to communicate with an external network. The system inc |
| 6567399 |
Hi-fidelity line card |
May 20, 2003 |
| A high-fidelity voice/audio communication system including a high-fidelity SLIC (HSLIC) device that combines traditional BORSCHT functionality with high fidelity sampling and compression techniques. The HSLIC preferably resides on a single plug-in line card contained within a multi-cards |
| 6567377 |
High performance load balancing of outbound internet protocol traffic over multiple network inte |
May 20, 2003 |
| A method for selecting a network interface card (NIC) to be used to send an outgoing data packet from a server computer system having a plurality of NICs coupled thereto. The outgoing data packet is addressed using an Internet Protocol (IP) address and a Transmission Control Protocol (TC |
| 6564333 |
Peripheral device power management circuit and method for selecting between main and auxiliary p |
May 13, 2003 |
| A circuit and method thereof for arbitrating between a first power source and a second power source in a computer system peripheral device such as a network adapter (e.g., a network interface card) that is connected to multiple power sources. The circuit includes a field effect transisto |
| 6563830 |
Multicast registration of all multicast flows in an asynchronous transfer mode based emulated LA |
May 13, 2003 |
| An apparatus for and a method of implementing multicast registration in an ATM based ELAN. The present invention provides a mechanism for a LEC to register to receive all multicast group traffic flows without requiring the LEC to generate a separate request for each multicast MAC address |
| 6563824 |
Apparatus and methods for determining the correct workstation within a LAN for a LAN modem to ro |
May 13, 2003 |
| A LAN modem permits unambiguous routing for multiple workstations located on a LAN to each gain access through the LAN modem to any one of a number of different remote servers located on a number of different remote networks using a combination of public port number and public address of |
| 6561824 |
Media connector interface for electrical apparatus |
May 13, 2003 |
| An electrical apparatus has an aperture block either retractably mounted or detachably mounted thereto. The aperture block has an aperture extending therethrough. The first end of a contact wire is disposed within the aperture while the opposed second end of the contact wire is coupled t |
| 6560714 |
Power management for a peripheral component interconnect environment with auxiliary power |
May 6, 2003 |
| A circuit and method thereof for arbitrating between a plurality of power sources connected to a computer system peripheral device. The circuit includes a first circuit subassembly coupled to a first power source and a second power source. The first circuit subassembly conducts current f |
| 6560709 |
Method and apparatus for the transfer of sensitive card data over an unsecure computer network |
May 6, 2003 |
| An apparatus and method for the secure transmission of credit card data over an Internet connection. The apparatus includes a card reader for reading credit card data and is adapted for connecting to a network device, such as a personal computer. The card data are encrypted in an enc |
| 6560630 |
Receive load balancing and fail over with multiple network interface cards |
May 6, 2003 |
| A method for load balancing incoming data packets in a server computer system adapted to have a plurality of network interface cards coupled thereto and communicatively coupled to client computer systems in a network. A first media access control (MAC) address for a first NIC is sele |
| 6560331 |
System and method for precise DTMF signal detection |
May 6, 2003 |
| A method and system for facilitating the detection of DTMF tones is disclosed. The method is based on detecting two tones using a modified nonuniform discrete Fourier transform that includes a phase correction term for each DTMF tone and harmonic. The disclosed method is employed by |
| 6560293 |
Apparatus and method for FM remodulation of envelope modulated data signals |
May 6, 2003 |
| An apparatus and method for transmitting envelope modulated data signals on a Radio Frequency (RF) carrier system, which produces high error performance through remodulation of the data signals onto an RF carrier are provided. The apparatus includes a transmit chain where, the data s |
| 6560237 |
Packet order assurance mechanism |
May 6, 2003 |
| Packets received by a network device such as a switch are queued to either a multicast or unicast queue depending on whether a valid mapping of the packet destination address to an output port of the device exists. Each queued packet is marked with a service era during which the message |
| 6560217 |
Virtual home agent service using software-replicated home agents |
May 6, 2003 |
| Multiple home agents for a home agent service provider network are implemented in a single computing platform in software as multiple virtual home agents. Each home agent is assigned or dedicated to a single virtual private network. Any number of home agents can be realized in the co |
| 6560203 |
Method for changing type-of-service in a data-over-cable system |
May 6, 2003 |
| A method and system for changing type-of-service with an associated quality-of-service in a data-over-cable system is provided. The method and system allow a cable modem or a cable modem termination system to dynamically override the statically assigned type-of-service supplied to th |
| 6560197 |
Distributed XDSL modem pool with front-end idle mode processing |
May 6, 2003 |
| A system and method for managing resources in a distributed xDSL modem pool arrangement including a first number of front-end modules and a second number of back-end modules. In a preferred embodiment, when a back-end module identifies that its associated call session has entered idle-mo |
| 6557108 |
System and method in a modem for providing a shortened reset pulse upon receipt of an external r |
April 29, 2003 |
| A system and method for providing a shortened DSP reset pulse to cause a modem to reset and enter a sleep mode as soon as possible after receipt of an external reset pulse issued by a host. A reset controller detects the external reset pulse, issues a separate reset pulse to the modem, m |
| 6556580 |
Multi-function transmit packet buffer |
April 29, 2003 |
| A transmit packet buffer (TPB) is used on a network interface card (NIC) to store downloaded packets and forward them through the media access controller (MAC) and the physical layer interface (PHY) onto the wire. A multi-function TPB is implemented to allow the multiple usage of this |
| 6556579 |
Method and apparatus for detecting duplicate buffers in a descriptor based multi-port queue |
April 29, 2003 |
| A main data memory is provided in a network device and includes a plurality of buffers for storing data packets. A plurality of descriptors, or pointers, point to the individual buffers. A status of the descriptors is stored in a descriptor reference memory. The status information includ |
| 6553568 |
Methods and systems for service level agreement enforcement on a data-over cable system |
April 22, 2003 |
| Methods and system for service level agreement enforcement on a data-over-cable system. One or more service level agreements are created including one or more class-of-service or quality-of-service parameters. A pool of Internet Protocol addresses is allocated for the one or more ser |
| 6553448 |
Method for unit distance encoding of asynchronous pointers for non-power-of-two sized buffers |
April 22, 2003 |
| A technique for encoding index values of asynchronous pointers for a non-power-of-two sized buffer that supports the unit distance property. The technique includes converting N+1 pointer index values corresponding to index locations 0 through N of the buffer from the natural binary-coded |
| 6553441 |
Method and apparatus for using serial bus for PC management |
April 22, 2003 |
| A serial bus with pre-defined protocol may be used on the NIC to provide PC management functions. While these functions may be used with the PC powered up, they may further perform valuable tasks while the PC is powered down. With these new added functions, centralized control may be |
| 6553001 |
Technique for use in conjunction with an ISDN terminal adapter for expeditiously and automatical |
April 22, 2003 |
| A technique for inclusion within, e.g., ISDN DTE, and use in conjunction with an ISDN terminal adapter (as DCE) for automatically providing ISDN switch type detection and SPID configuration. Specifically, switch type detection occurs by analyzing D-channel ISDN initialization messages |
| 6552590 |
Clocking scheme for ASIC |
April 22, 2003 |
| A clock scheme for a system on a chip wherein integral sub-multiples of a system clock have positive edges on odd-numbered positive edges of the system clock and negative edges on even-numbered positive edges Data transfer between blocks of different frequencies is controlled by a state |
| 6547602 |
Modular plug receptacles defined by multiple electronic components |
April 15, 2003 |
| An integrated modular plug receptacle package is disclosed wherein one or more modular plug receptacles, or jacks, are defined by bringing two or more PC cards into operable communication, such as within the card slot cavity of a portable computer, for instance. Each PC card has formed o |
| 6546496 |
Network interface with power conservation using dynamic clock control |
April 8, 2003 |
| A system and method for managing power consumption on a network interface card involves connecting constantly running clocks to a small amount of logic on the network interface card. The logic is used to monitor activity on the network interface card, and in response to events enable the |
| 6546056 |
Timing recovery in a multi-tone modem |
April 8, 2003 |
| A timing recovery apparatus for use in a receiver in a multicarrier transmission system is provided. The apparatus includes a receive signal buffer, a pointer register containing an address to a location within the receive signal buffer, a time to frequency domain signal converter, a |
| 6546015 |
LAN emulation broadcast and unknown server |
April 8, 2003 |
| A novel BUS entity utilizing the forwarding engine in a conventional LAN switch incorporating an ATM interface. The forwarding engine is adapted to assemble Ethernet frames from ATM cells and to segment Ethernet frames back to ATM cells. The switching fabric in a conventional LAN switch |
| 6545643 |
Extendable planar diversity antenna |
April 8, 2003 |
| The present invention is a retractable/extendable diversity antenna that provides the appropriate polarization in a horizontal orientation. The antenna structure is placed within a Type II PCMCIA PC card package and may be extended or retracted with one touch. The antenna structure is |
| 6543027 |
On-chip detection of clock gitches by examination of consecutive data |
April 1, 2003 |
| An application specific integrated circuit includes a clock recovery circuit which recovers from an input signal a repetitive sequence of data values wherein no two consecutive values are the same and a recovered clock. An address generator responds to the recovered clock to cause st |
| 6542992 |
Control and coordination of encryption and compression between network entities |
April 1, 2003 |
| Two network entities allocate the performance of encryption and compression algorithms amongst each other in a controlled and coordinated manner so as to avoid unnecessary duplication of encryption and compression at different protocol layers and an associated waste of CPU power. For |
| 6542504 |
Profile based method for packet header compression in a point to point link |
April 1, 2003 |
| A method is shown for compression of packet header information of packets transmitted on a point to point link. First and second endpoints of the point to point link negotiate a profile for packet header information for packets transmitted from the first endpoint to the second endpoint o |
| 6542470 |
Packet expansion with preservation of original cyclic redundancy code check indication |
April 1, 2003 |
| A system for appending data to a packet whereby the original CRC calculated by the transmitting station is not modified and is retained in order to determine the occurrence of transmission errors at the receiver. The invention is applicable in communication systems whereby the data to be |
| 6542465 |
Method for flow control in asymmetric digital subscriber line devices |
April 1, 2003 |
| A method for flow control in asymmetric digital subscriber line ("ADSL") devices. The method includes flow control that adapts to changes in line conditions such as noise signals, onhook/offhook signals, etc. that may result in degradations in the quality-of-service in an ADSL system. Th |
| 6542358 |
Retractable platform with wireless electrical interface |
April 1, 2003 |
| A retractable platform allows communication to be established with an electronic device, such as a computer expansion card. The retractable platform is preferably slidably attached to the electronic device and retractable platform includes a wireless interface that allows the communi |
| 6539540 |
Methods and apparatus for optimizing simple network management protocol (SNMP) requests |
March 25, 2003 |
| A method for optimizing the detection of a change in MIB information, the method including the steps of creating a MIB information request, sending the request to a SNMP agent, receiving a first response to the request from the SNMP agent, wherein the first response includes MIB informat |
| 6539341 |
Method and apparatus for log information management and reporting |
March 25, 2003 |
| Log entries in a system that produces status or other log data (ASIC verification system, for example) are saved in a circular buffer until a trigger event occurs. Typically, the system operates on a Device Under Test (DUT), but may apply to other systems that simply monitor or gather |
| 6539338 |
Self-diagnostic testing of a network interface adapter |
March 25, 2003 |
| A method and apparatus for implementing a self-diagnostic capability in a network interface adapter in which failure data is provided to a host processor. The host processor may report the failure data to a user or additionally the host processor may attempt to correct predetermined |
| 6539019 |
Methods and apparatus for automatically connecting a dynamic host configuration protocol (DHCP) |
March 25, 2003 |
| A method for automatically connecting a DHCP endpoint to a VLAN in an ATM network having a switch operative to provide LAN emulation for a plurality of non-ATM endpoints, the method including the steps of maintaining a LEC for the VLAN in the absence of any request by any of the endpoint |
