Patents Examined by William Schultz
  • Patent number: 7221658
    Abstract: A personal communications portal maintains presence information about a user who may be available at one or more terminal devices on one or more access networks comprising a multiple access network. The access networks may operate in different transmission modes and may utilize different signaling formats (text, graphics, voice, video, etc.). A watched party specifies preferences as to who may contact him, at what times, on what kind of network and device. A watching party requesting to contact the watched party may be given direct contact information for contacting the user, may be given indirect contact information for contacting the user without being informed of the watched party's whereabouts, may be placed directly in communication with the watched party, or may forward a message to the user.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: May 22, 2007
    Assignee: Nortel Networks Ltd
    Inventors: Steven M. Armstrong, Eric W. Parsons, Elwyn B. Davies, Andrew Newton Harker, David Robert Stringer
  • Patent number: 6937624
    Abstract: A unit for receiving and re-transmitting data signals comprising multi-byte packets separated by multi-byte inter-packet gaps includes a FIFO store, a first, write, state machine for controlling the writing of packets into the FIFO and a second, read, state machine for controlling read-out of packets from the FIFO. The first state machine is controlled by a recovered clock and the second state machine is controlled by a local system clock. The first state machine is operative in a writing sequence to write into the FIFO the words of each received packet in successive locations and thereafter to cause the writing into the FIFO of a succession of idle bytes representing a selected inter-packet gap; and the second state machine is operative in response to maintain a reading sequence in arrears of the writing sequence by a selected number of said locations. The arrangement maintains the inter-packet gap despite slight differences between the recovered clock and the system clock.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: August 30, 2005
    Assignee: 3Com Corporation
    Inventor: Vincent Gavin
  • Patent number: 6909722
    Abstract: A method and system that enables proportionately multiplexing a plurality of data stream into one data stream is disclosed. A mobile station has applications that produce separate data streams. Example applications include voice, signaling, E-mail and web applications. The data streams are combined by a multiplexer module into one data stream called the transport stream. The transport stream is sent over the reverse link to a BTS. The multiplexer module combines the data streams onto the transport stream according to their relative proportions and priorities.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: June 21, 2005
    Inventor: Peng Li
  • Patent number: 6901063
    Abstract: Techniques for delivering data recovered by a HARQ entity in proper order to higher layers in a CDMA system. In a method, packets are received from the HARQ entity by the re-ordering entity and missing packets among the received packets are detected. Packets may be transmitted in a sequential order based on transmission sequence numbers (TSNs) assigned to the packets, and missing packets may be detected based on the TSNs of the received packets. Delivery of received packets later than the missing packets are stalled because higher layers expect data in-order. A determination is thereafter made whether each missing packet is (1) subsequently received from the HARQ entity or (2) lost, by successively eliminating HARQ channels that may be used to send the missing packet. Received packets previously stalled by each missing packet are delivered after the missing packet is determined to be lost or received.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: May 31, 2005
    Assignee: QUALCOMM, Incorporated
    Inventors: Alkinoos Hector Vayanos, Durga P. Malladi, Sai Yiu Duncan Ho
  • Patent number: 6895014
    Abstract: A method for polling a plurality of wireless modems from a base station in which the base station individually polls all of the modems and forms at least two lists such that each modem is identified on only one discrete list based upon its behavior in response to the polling. Thereafter, the modems identified on each discrete list are polled at a rate that may differ from the rate at which the modems identified on any other list are polled and the lists are updated dynamically based upon the behavior of the modems polled in response to the last polling.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: May 17, 2005
    Assignee: Wave Rider Communications Inc.
    Inventors: Walter Simbirski, Dusty Keashly, Joseph Robert Brasic, Daniel Cameron Taylor, Braden Stuart Marr, Lisa Anne Ryan
  • Patent number: 6895024
    Abstract: A switching system. The switching system includes a first switch having a primary receive port and a secondary receive port. The switching system includes a second switch connected to the first switch. The second switch has n receive ports, where n is greater than or equal to 2 and is an integer. The second switch has m transmit ports, where m is greater than or equal to 2 and is an integer. The transmit ports are decoupled from the receive ports. The second switch has a connecting mechanism that includes a multicast mechanism which sends data out a primary transmit port of the m transmit ports to the primary receive port of the first switch to define a primary path, and out a secondary transmit port of the m transmit ports to a secondary receive port of the first switch to define a redundant path to the primary path so that if there is a failure of the primary path to provide the data to the first switch, the data is received by the first switch through the redundant path.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: May 17, 2005
    Assignee: Marconi Communications, Inc.
    Inventors: John E. Drake, Jr., Joseph C. Kantz, Daniel S. Nydick, Dimitris Varotsis, James A. Meacham, II
  • Patent number: 6885668
    Abstract: Disclosed is an apparatus and a method capable of processing low-speed circuit data lower than 64 kbps and high-speed packet data higher than 64 kbps in which a high-speed data network is constructed by converting an LCIN (local CDMA (code division multiple access) interconnection network) for supplying a communication path of packet data among sub-systems in a BSC (base station controller) of CDMA system to an ATM (asynchronous transfer mode) for processing high-speed data, installing a TSB (transcoder selector bank) or an SDU (selector distribution unit) for processing high-speed packet data higher than 64 kbps in the BSC, and linking an ATM switch to an MSC (mobile switching center) to provide a high-speed data service with respect to other network.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: April 26, 2005
    Assignee: UTStarcom, Inc.
    Inventors: Ho-Jin Lee, Chae-Moon Lee, Duck-Young Seo, Jin-Hyung Yang
  • Patent number: 6847637
    Abstract: The invention concerns a data packet switching unit (26) associated with a node (20) in a network (10) and having several input/output ports for the packets. The unit is wherein it has: a number n of intermediate ports (70, 80, 90, 100) disposed between input/output ports of a first (40, 50, 60) and second (C) type, a port of the second type being able to support an internal connection to the node (20), at least one storage means (72, 77) associated with each intermediate port, means (A) of transferring a packet between at least one so-called input port and at least one so-called output port and which uses at least one intermediate port and said at least one associated storage means.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: January 25, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Anne Abiven
  • Patent number: 6845097
    Abstract: A device, a system, a method and a computer readable medium allowing a user to efficiently and easily add/remove or pair a processing device to a short distance wireless network is provided according to embodiments of the present invention. A user enters a PIN into a device. The device is then automatically paired to another device without any further user intervention to form a short distance wireless network in an embodiment of the present invention. A third party such as a manufacturer, reseller or telecommunication provider enables a processing device to be added to the short distance wireless network by generating a pairing message over the Internet or a SMS in an embodiment of the present invention. A user is able to know when a PIN code is invalid by a device performing error detection in another embodiment of the present invention. In still another embodiment of the present invention, the device also stores an error correction software component for correcting an erroneously inputted PIN.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: January 18, 2005
    Assignee: IXI Mobile (Israel) Ltd.
    Inventors: Amit Haller, Peter Fornell, Avraham Itzchak, Ziv Haparnas, Amir Glick
  • Patent number: 6836469
    Abstract: A medium access control (MAC) protocol for controlling data communication in a multi-channel communication system (e.g., a wideband code division multiple access system). The protocol provides a procedure for transmitting, via a plurality of data links and control links, data packets between a first station (e.g., a base station) and one or more second stations (e.g., mobile stations). The protocol includes initial transmission of one or more data request packets each having a preamble code and a cyclic redundant code from the second stations to the first station, subsequent transmission of one or more channel assignment commands from the first station to one or more of the second stations based on the data request packets processed by the first station, and final transmission of one or more data packets from the one or more of the second stations to the first station based on the channel assignment commands.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: December 28, 2004
    Assignee: Industrial Technology Research Institute
    Inventor: Chiung-Shien Wu
  • Patent number: 6831907
    Abstract: A method of broadcasting commercial FM services in a digital format in at least one bitstream comprises time-division multiplexing the bitstream(s) into one or more channels comprising a data frame, and frequency modulating the data frames around a single carrier frequency into a commercial FM broadcast signal. The modulation may comprise GMSK or 8-PSK, and multiple data frame types may be interleaved. The signal is transmitted on a commercial FM broadcast station such that substantially the entire spectrum of the transmission comprises the digital data frames. The bit rate(s) of the digital bitstream(s) may be monitored, and the bitstream(s) may be reallocated to channels in the data frames based on changes in the bit rate(s). Analog and digital formats may be broadcast simultaneously on non-adjacent commercial FM broadcast carrier channels. A receiver is operative to extract and decode content from a digital format FM broadcast signal.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: December 14, 2004
    Assignee: Ericsson Inc.
    Inventors: Rodney A. Dolman, Paul W. Dent
  • Patent number: 6829220
    Abstract: The present invention provides methods and systems for evaluating network traffic. By generating successive sets of weights relating to a performance surface using a variety of heuristic techniques, and then evaluating the weights using a piece-wise linear cost function, a number of performance minima can be found. By continuously searching the performance surface, a champion minimum can be extracted. Searching the performance surface can be quickly and efficiently accomplished using a variety functions such as an anti-cycling function, an impatience function, a dynamic graph technique and a diversity process.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: December 7, 2004
    Assignee: AT&T Corp.
    Inventors: Mikkel Thorup, Bernard Fortz
  • Patent number: 6816457
    Abstract: A router and method for routing table cache population technique is disclosed. In particular, the illustrative embodiment routes packets through it more quickly than comparatively expensive routers in the prior art. The present invention recognizes that a fast router has small routing table cache that has a high hit ratio and that a high hit ratio can be achieved with a small routing table cache by predicting which entries will be needed in the routing table cache in the future and by populating the routing table cache with those entries before they are needed.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: November 9, 2004
    Inventor: Abdullah Ali Bahattab
  • Patent number: 6813264
    Abstract: An SIP server in an IP-based infrastructure supporting wireless telephones determines whether, based on the destination address in a call request, the call is an intrasystem call or an intersystem call. For intrasystem calls the SIP server routes VOIP packets directly between the originating and destination devices. For intersystem calls, however, and in particular encrypted calls, instead of routing the VOIP packets through the public Internet, the SIP server instantiates a circuit-switched call using a local modem bank connected to the PSTN. In this way, quality of service assurance is obtained and latency reduced.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: November 2, 2004
    Assignee: Qualcomm, Incorporated
    Inventor: Dan Vassilovski
  • Patent number: 6807179
    Abstract: A network switch includes network switch ports, and switching logic for determining the output port for each received layer 2 type data packet. The switching logic includes an address table configured for storing address-based switching decisions, a trunk table configured for assigning each network switch port to a corresponding identified trunk, and a trunk distribution table identifying the network switch ports assigned to each identified trunk. The switching logic determines the output port for each corresponding received layer 2 type data packet based on a corresponding switching decision for the received layer 2 type data packet, and based on selection of an entry in the trunk distribution table based on information within the received layer 2 type data packet. Hence, the network switch is able to perform trunk-based switching with minimal complexity, ensuring switching of data packets at the wire rate.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: October 19, 2004
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Mrudula Kanuri, Bahadir Erimli
  • Patent number: 6804235
    Abstract: An architecture, system and method are provided for transparently mapping addresses across multiple addressing domains and/or protocols. A destination of a packet can therefore be transferred from a first addressing domain within one network to a second addressing domain within another network, without inserting knowledge into the packet of the relationship between the two separate and independent domains. Transmission modules within one network can be identified with unique identification numbers or addresses assigned during configuration of those modules. The identification numbers assigned internal to the network can be mapped and placed upon the packet as the packet enters the network. Mapping, however, is minimal, knowing that relatively few external devices are connected to select internal devices and/or modules. The packet can then be mapped into the network, where it is then transferred across the network whereupon it is mapped to another network or termination device external to the network.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: October 12, 2004
    Assignee: Dunti LLC
    Inventor: Rupaka Mahalingaiah
  • Patent number: 6792007
    Abstract: The protection of data against illicit transfer with respect to specific data can be ensured. An integrated receiver decoder determines whether or not ATRAC (Adaptive Transform Acoustic Coding) data requiring authentication is contained in selected piece-of-music data in accordance with determination data added into transmitted data. When ATRAC data requiring authentication is contained, the integrated receiver decoder performs an authentication process between it and a storage which is a transfer destination of the ATRAC data, and performs downloading of the ATRAC data after confirming that the storage is a valid apparatus to which the downloading may be performed.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: September 14, 2004
    Assignee: Sony Corporation
    Inventors: Ichiro Hamada, Keiji Yuzawa
  • Patent number: 6791974
    Abstract: The universal Internet based telephony system is implemented as a process that is accessible via an Internet WEB page and executes on the WEB server that hosts the WEB page and/or a back-end Internet telephony server which is accessed and controlled by the WEB server. The customer accesses the universal Internet based telephony system via any existing Java Enabled Internet Browser software resident on the customer's personal computer, either as an adjunct process thereon, or as a dedicated Internet telephony process. When a customer accesses the Internet WEB page and clicks on the universal Internet based telephony system icon, the WEB server on which the WEB page resides executes the resident universal Internet based telephony system hyperlink script and transfers a newly opened browser session to the universal Internet based telephony system WEB site.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: September 14, 2004
    Assignee: eStara, Inc.
    Inventor: Jeffrey Douglas Greenberg
  • Patent number: 6791951
    Abstract: A first connection stage includes connecting by a switched network control device a call from a first terminal with a terminal selection device, noticing “there is no terminal to be connected” to the first terminal as a selected result from the terminal selection device when no terminal is selected, and disconnecting the call. A second connection stage includes connecting by the switched network control device a call from a second terminal with the terminal selection device, noticing “there is a terminal to be connected” and “a connection number of the first terminal” to the second terminal as a selected result from the terminal selection device when the first terminal is selected, and disconnecting the call.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: September 14, 2004
    Assignee: KDD Corporation
    Inventors: Junnosuke Miyamoto, Hitomi Murakami, Shuji Kawabe, Kazuyasu Matsumoto
  • Patent number: 6785250
    Abstract: Techniques to time-share a common channelization code among multiple terminals for compressed mode transmissions. Each terminal is initially assigned a respective channelization code used to channelize data transmitted in non-compressed frames for the terminal. A common channelization code used to channelize data transmitted in compressed frames for the terminals is also selected. Each compressed frame includes one or more compressed transmissions and all or a portion of a transmission gap. The compressed frames for the terminals are scheduled such that the compressed transmissions for the compressed frames do not overlap. Thereafter, non-compressed frames for each terminal are channelized with the channelization code assigned to the terminal, and compressed frames for the terminals are channelized with the common channelization code.
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: August 31, 2004
    Assignee: QUALCOMM Incorporated
    Inventors: Alkinoos H. Vayanos, Francesco Grilli