| Patent Number |
Title Of Patent |
Date Issued |
| 6265051 |
Edge connectors for printed circuit boards comprising conductive ink |
July 24, 2001 |
| Disclosed are edge contacts for printed circuit boards comprising a copper lead coated with conductive ink comprising a binder and graphite powder, carbon black, and silver flakes. Also disclosed are printed circuit boards containing the contacts and methods for manufacturing the contact |
| 6263016 |
Methods for interfacing a subscriber link to digital networks |
July 17, 2001 |
| The current invention provides methods for relieving congestion associated with interfacing multiple types of subscriber link traffic, i.e. voice, voice-band data, and broad-band data, with a network such as the public switched telephone network (PSTN). In an embodiment of the invention |
| 6262984 |
Method of preventing overlapping branches in point to multipoint calls in PNNI networks |
July 17, 2001 |
| A method that provides a solution to the problem of overlapping branches in a point to multipoint call. The method is suitable for both Leaf Initiated Joins (LIJ) and existing point to multipoint call. The method has applications when adding a new leaf to an already existing point to |
| 6262979 |
Telecommunication conferencing system and method |
July 17, 2001 |
| A telecommunication conferencing system and method are described. Three or more telephone sets connected to one of the networks can concurrently participate in a conference call. Each telephone set engaged in the conference call receives a list of participants in the call and an iden |
| 6262977 |
High availability spanning tree with rapid reconfiguration |
July 17, 2001 |
| An improvement to the spanning tree protocol provides for identifying a port on the bridge in the alternate port role which qualifies as a next best root port. Upon detection of a failure at the root port, or other event causing a change in the root port to a blocking state, the next bes |
| 6262684 |
Stylus antenna |
July 17, 2001 |
| The present invention discloses antenna structures for portable digital devices that continuously receive radio signals in both the extended and the retracted antenna positions. In addition, the disclosed antenna structures tune the antenna based on the position of the antenna to ach |
| 6260084 |
Modem apparatus and method for serial command and data multiplexing |
July 10, 2001 |
| A modem and associated method with both an RS-232 interface and a USB interface connects to a host. The modem detects which of the two interfaces is connected to the host and determines an appropriate data path. For connections to the USB interface, data is routed through a USB proce |
| 6259691 |
System and method for efficiently transporting dual-tone multi-frequency/multiple frequency (DTM |
July 10, 2001 |
| A method and system in a network telephony system for transporting audio signals with lower delay when DTMF is not present. The method of transporting audio signals determines whether DTMF signals are included in the audio signal, or are likely to be transported according to the called |
| 6259409 |
Retractable sliding antenna assembly for wireless communication |
July 10, 2001 |
| A method and apparatus is disclosed for wireless communication of a computer with a wireless network or a wireless device. In one embodiment of the present invention, a pc card is configured for insertion into a computer pc card slot. Additionally, a sliding assembly is housed within |
| 6257906 |
Functionally illuminated electronic connector with improved light dispersion |
July 10, 2001 |
| The present invention relates to an illuminated connector that may be illuminated from a light source that is not immediately adjacent to the connector. The connector is illuminated by projecting a focused beam of light onto a translucent portion of the connector. The focused beam of |
| 6257905 |
Surface mounted contact block |
July 10, 2001 |
| A contact system is disclosed that comprises a metal contact disposed in a dielectric body. The dielectric body is disposed in a printed circuit board depression and the metal contact has at least one folded section that makes electrical contact with the printed circuit board. The in |
| 6256693 |
Master/slave data bus employing undirectional address and data lines and request/acknowledge sig |
July 3, 2001 |
| A bus and associated logic employ a master/slave communication protocol and unidirectional point-to-point connections. Unidirectional address lines carry address signals from a bus master to bus slaves. One set of unidirectional data lines carry data from the master to the slaves, and |
| 6256353 |
Method and apparatus for generating a probing signal for a system having non-linear network and |
July 3, 2001 |
| The present invention provides a method of generating a signal that may be used to determine the characteristic response of a communication channel that utilizes the public Digital Telephone Network (DTN). The channel includes the DTN, which may have Network Digital Attenuators (NDA) and |
| 6256320 |
Dual clocks for network device |
July 3, 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 |
| 6256318 |
Network hub activity display |
July 3, 2001 |
| The occurrence of collision and activity in a computer network is indicated by activation of a visual indication device. The device is activated for periods which are longer than the actual periods of collision and activity to permit the human eye to register the visual indications. This |
| 6256306 |
Atomic network switch with integrated circuit switch nodes |
July 3, 2001 |
| An atomic type switch mesh is combined with standard local area network links, such as high speed Ethernet, and a bridge-like protocol to provide a high performance scalable network switch. The network switch comprises a plurality of switch nodes, a first set of communication links which |
| 6256305 |
Architecture to support a single system image across multiple network access servers |
July 3, 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 |
| 6255967 |
Frame-based spectral shaping method and apparatus |
July 3, 2001 |
| An improved DC compensation method for use in conjunction with telephony signalling. The method includes defining a frame that includes at least two n-bit codewords. An unsigned codeword is then identified within the frame by applying a rule to the codewords in the defined frame. Next, a |
| 6253269 |
Bus arbiter system and method for managing communication buses |
June 26, 2001 |
| A communication interface device with a card chassis capable of holding a number of electronic equipment or circuit cards. The card chassis provides a communication backplane that provides a plurality of communication buses accessing each of the equipment cards in the card chassis. To se |
| 6253265 |
Reinitialization circuit for a data communications interface |
June 26, 2001 |
| A method and apparatus for reinitializing a galvanically isolated bus by clearing the bus when it is locked up. The reinitialization circuit monitors the state of the bus and recognizes when the bus is locked up in an artificial active state by timing the duration of this state. When the |
| 6252901 |
Digital modem fast retrain escape mechanism |
June 26, 2001 |
| A method and system for escaping from a fast retrain sequence in an ADSL system, particularly in a splitterless ADSL system. In one aspect of the invention, in order to minimize the impact of needing to complete nearly all of a fast retrain sequence, particularly when the sequence is |
| 6252532 |
Programmable compensation and frequency equalization for network systems |
June 26, 2001 |
| A system for reducing electromagnetic interference emissions is described. The system can include a network interface card with an Ethernet controller circuit. The Ethernet controller circuit uses a pair of programmable digital to analog converters to generate an Ethernet output sign |
| 6252162 |
Laminated filter apparatus and method for reducing electromagnetic interference |
June 26, 2001 |
| A laminated filter apparatus for reducing electromagnetic interference includes a first conductor having a first side and a second side. The laminated filter apparatus also includes a second conductor having a first side and a second side. A first insulative member is positioned between |
| 6249757 |
System for detecting voice activity |
June 19, 2001 |
| A system for detection of voice activity in a communications signal, employing a nonlinear two filter voice detection algorithm, in which one filter has a low time constant (the fast filter) and one filter has a high time constant (the slow filter). The slow filter serves to provide a no |
| 6249527 |
Communication access chassis with general purpose computing platform |
June 19, 2001 |
| A communication access chassis having a general purpose computing platform provides communication access between remote users and computer network via the public telephone network. The general purpose computing platform is connected to an internal chassis bus complex transmitting incomin |
| 6247082 |
Method and circuit for providing handshaking to transact information across multiple clock domai |
June 12, 2001 |
| A method and circuit for handshaking information across multiple clock domains within an electronic system. The environment of the present invention includes an electronic or computerized system having at least two subsystem domains (a first domain and a second domain) operating at d |
| 6246690 |
Method and device for controlling data flow in a computer data network |
June 12, 2001 |
| An Ethernet flow control system, preferably for a Ethernet switch, having flow controlled transmitting ports in compliance with IEEE Standard 802.3x. The flow control system includes a shared resource, a plurality of buffers receiving data frames from the shared resource, and a plurality |
| 6246683 |
Receive processing with network protocol bypass |
June 12, 2001 |
| An adapter is provided with intelligence that allows it to separate the header parts of a packet being received from the payload it carries, and in most cases move the payload directly into a destination buffer at the application layer or file system layer. Copies by the intermediate lay |
| 6246589 |
Retention clip for retaining a compact flash drive on a PC board |
June 12, 2001 |
| A retention clip for retaining a compact flash drive on a PC board includes a flash drive contact portion. The flash drive contact portion includes first and second leg portions extending in an outward direction from the flash drive contact portion. The first leg portion includes a first |
| 6244953 |
Electronic device fan mounting system |
June 12, 2001 |
| A fan and chassis assembly, a fan, bracket and chassis arrangement as well as a fan and chassis system and process for providing a fan and chassis are disclosed. The assembly includes a fan, a bracket and a chassis. The fan includes a fan housing having an outer periphery. The chassis in |
| 6243846 |
Forward error correction system for packet based data and real time media, using cross-wise pari |
June 5, 2001 |
| A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. For each window of k data packets, the invention generates and transmits at |
| 6243818 |
Power subsystem for a communication network containing a power bus |
June 5, 2001 |
| A method and apparatus of powering components on a network by using a load-share technique and by using over-voltage and current-limiting circuitry. The power subsystem for a component in a network is designed in a load-share manner whereby the power subsystem will supply power to the |
| 6243785 |
Hardware assisted polling for software drivers |
June 5, 2001 |
| A method and system for programmably controlling hardware generation of interrupts by a peripheral component. In one embodiment, the present invention uses a peripheral component driver to programmably define a duration for a time cycle of a hardware timer disposed on a peripheral co |
| 6240464 |
Method and system for managing addresses for network host interfaces in a data-over-cable system |
May 29, 2001 |
| A method and system for managing addresses of network host interfaces in a data-over-cable system such as Internet Protocol interfaces. The method allows network host interfaces addresses to be removed from routing tables on network devices such as cable modems or customer premise equipm |
| 6240302 |
Wireless phone with removable personal information manager |
May 29, 2001 |
| A communications system includes a wireless telephone having a PC card rotatably and electrically coupled therewith. The PC card has a Type Two form factor. The system further includes a discrete, independently operably PIM. The PIM comprises a housing having a display screen mounted |
| 6240173 |
Virtual end office in a switched telephone network |
May 29, 2001 |
| Methods and apparatus implementing a technique for a virtual end office. The virtual end office includes one or more pre-switch adjuncts forming a single logical construct. Each pre-switch adjunct is connected to a local exchange switch in a telephone network and provides special service |
| 6239984 |
Backplane circuit board for an electronic chassis |
May 29, 2001 |
| A backplane circuit board for an electronic chassis includes a bracket and an upper circuit board operatively connected to the bracket. A lower circuit board is also operatively connected to the bracket wherein the upper circuit board is offset from the lower circuit board and the upper |
| 6239977 |
Technique for mounting electronic components on printed circuit boards |
May 29, 2001 |
| A PCMCIA (Personal Computer Memory Card International Association) modem card includes a PCB (printed circuit board) sealed in a slender enclosure, typically the size of a credit card. The PCB contains a hole for receiving a drop-in electronic component, such as a resetting fuse. The fus |
| 6233613 |
High impedance probe for monitoring fast ethernet LAN links |
May 15, 2001 |
| A high impedance tap for monitoring traffic over a communication link of a fast Ethernet local area network (LAN). The circuit of the present invention is advantageously used for tapping into a fast Ethernet communication link (e.g., bi-directional communication channel) of a LAN usi |
| 6233237 |
Method and protocol for connecting data calls using R2 signaling |
May 15, 2001 |
| A method and protocol for creating R2 data connections over a telecommunications connection is presented. The protocol includes a small set of signals used to create a data connection over a telecommunications using R2-MFC signaling for voice connections. The method includes a first |
| 6233232 |
Supporting multilink connections across multiple network access servers |
May 15, 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 |
| 6233074 |
Ring networks utilizing wave division multiplexing |
May 15, 2001 |
| An optical add drop module (OADM) to enable the construction of ring networks. WDM is utilized to construct a ring type network suitable for use in both WAN and LAN environments. The network is constructed having a ring topology with a plurality of nodes connected around the ring in dais |
| 6230231 |
Hash equation for MAC addresses that supports cache entry tagging and virtual address tables |
May 8, 2001 |
| A cache line index for an address cache entry is calculated by organizing an address such as a Media Access Control ("MAC") address into a plurality of intermediate elements, barrel shifting the bits of at least one of the intermediate elements in accordance with predetermined criteria, |
| 6230193 |
Method and apparatus supporting network communications |
May 8, 2001 |
| 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 |
| 6230181 |
Management shutdown and reset of embedded systems |
May 8, 2001 |
| A system for shutting down and resetting an embedded system having a general purpose computing platform. A shutdown management driver generates a management reset according to a predetermined set of shutdown conditions. The shutdown and reset manager receive the management reset sign |
| 6229804 |
Gatekeeper election methods for internet telephony |
May 8, 2001 |
| An election protocol or method is described for use in Internet Telephony, in which a gatekeeper is elected to serve as an active gatekeeper. The group of gatekeepers elect one gatekeeper in a zone to act as a primary gatekeeper that responds to gatekeeper request messages by broadcastin |
| 6226769 |
Forward error correction system for packet based real time media |
May 1, 2001 |
| A computationally simple yet powerful forward error correction code scheme for transmission of real-time media signals, such as digitized voice, video or audio, in a packet switched network, such as the Internet. The invention appends to each of a series of payload packets a single forwa |
| 6226292 |
Frame replication in a network switch for multi-port frame forwarding |
May 1, 2001 |
| A network data switch includes a transmit buffer memory containing transmit buffers allocated to temporarily store data frames being transmitted on attached network links. Multicast frames are replicated into different transmit buffers as necessary for transmission on the corresponding |
| 6223222 |
Method and system for providing quality-of-service in a data-over-cable system using configurati |
April 24, 2001 |
| A method and system for quality-of-service in a data-over-cable system using configuration protocol messaging is provided. The method and system include determining whether a cable modem termination system has enough available bandwidth to provide a quality-of-service connection requeste |
| 6223149 |
Non-distributed LAN emulation server redundancy method |
April 24, 2001 |
| A method of providing redundancy in a LAN Emulation network in the event an LES fails. The method is light in that it does not require complicated database synchronizations between LECSs and their associated complex message protocol exchanges. The method comprises defining a plurality of |
