Patents Examined by Steven H. D Nguyen
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Patent number: 6781979Abstract: A connection control device for controlling data communication involving set-up of a connection provided on both sides of a communication source and a communication destination to control connection states of both sides in cooperation with a communication partner, each device controlling communication between a data terminating equipment and a data circuit-terminating equipment on its side, including connection holding means for holding the state of an established connection after a disconnection of a physical line, communication resuming means for resuming communication by a held connection after a re-connection of a physical line, control means for processing a transition of said connection states, a control message communication means for transmitting and receiving information of a communication partner and information of a transition of the connection states to and from the communication partner as a control message, and information storage means for storing information of a communication partner and infoType: GrantFiled: March 2, 2000Date of Patent: August 24, 2004Assignee: NEC CorporationInventors: Koichi Ebata, Kenji Takeda
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Patent number: 6781980Abstract: A wideband code division multiple access (CDMA) communication system overlayed on an IS-95 network generates two or more digital bit streams from a group of wideband digital data streams, each digital bit stream spread to form a CDMA component signal. Each CDMA component signal is combined with a corresponding IS-95 digital bit stream to form a composite CDMA signal, allowing a base station to share transmitter subsystems between the wideband and IS-95 systems. For up to three carrier frequencies, up to three composite CDMA signals are employed. A digital bit stream for a group of summed user conversations in the IS-95 system modulates a respective RF carrier frequency to generate a low-power RF signal. The CDMA component signals of the wideband CDMA system are generated so each has a chip rate identical to the chip rate of the digital bit streams of the IS-95 system.Type: GrantFiled: October 22, 1998Date of Patent: August 24, 2004Assignee: Lucent Technologies Inc.Inventors: Miguel Dajer, Peter K. LaConte, Harvey Rubin
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Patent number: 6778543Abstract: The invention concerns a method of controlling the synchronization in a data packet communication network (10) having at least two serial communication buses (D, E) interconnected by a bridge (PDE) and each defining successive time cycles each having a duration specific to the said bus under consideration, the said method having the following steps: detection (C3, C4) of a relative drift between the respective cycles of the said at least two serial communication buses, transmission (C10, C12; C18, C17) of a command for modifying the duration of the cycle of one of the said at least two serial communication buses, characterised in that the said method includes at least one delay phase (C6, C7; C2, D1, D2) before at least one of the preceding steps.Type: GrantFiled: March 13, 2000Date of Patent: August 17, 2004Assignee: Canon Kabushiki KaishaInventors: Laurent Frouin, Jean-Paul Accarie, Yacine Smail El Kolli, Falk Tannhauser
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Patent number: 6778539Abstract: A method of using routing tables. In this method, routing differs from ordinary table routing in that the part of a destination address (e.g., DestinationID) used for a table lookup is variable. Networks using the full address space of a network node can be made by partitioning the network topology into several levels, such as a top topology and any number of sub-topologies. With a DestinationID of N−1 bits, a routing table of 2n entries is sufficient to support topologies using the full address space, wherein n<N−1.Type: GrantFiled: March 7, 2000Date of Patent: August 17, 2004Assignee: Sun Microsystems, Inc.Inventor: Hans Rygh
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Patent number: 6778540Abstract: A facility is provided to allow for dynamic configuration of data routing between TCP/IP stacks of multiple partitions of a multi-partition processing system and a network adapter such as a local area network (LAN) gateway for the multi-partition processing system. The facility includes a command for automatically providing the network adapter with information that a particular partition of the processing system is to function as a router; and using the information at the network adapter to forward data received across the network to the partition when the data is to an unregistered HOME internet protocol (IP) address. The forwarding of data to the router partition occurs without any conventional IP processing.Type: GrantFiled: May 31, 2000Date of Patent: August 17, 2004Assignee: International Business Machines CorporationInventors: Bruce H. Ratcliff, Arthur J. Stagg, Stephen R. Valley
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Patent number: 6778547Abstract: An integrated multiport switch operating in a packet switched network utilizes an internal rules checker (IRC) to process data frames. The IRC employs a modular, pipelined architecture that enables data frames to be processed simultaneously, thereby increasing data throughput.Type: GrantFiled: May 21, 1999Date of Patent: August 17, 2004Assignee: Advanced Micro Devices, Inc.Inventor: Shashank C. Merchant
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Patent number: 6775238Abstract: In an image forming device management system and method, a failure in any of a plurality of image forming devices on a first LAN is detected by a management apparatus. A failure message is transmitted from the management apparatus to a center system via a public switched telephone network when the failure is detected, the failure message including a failure code provided to identify the failure. The failure message, transmitted by the management apparatus, is received at the center system. A database of the center system is accessed by using the failure code of the received failure message so as to produce results of the accessing at the center system. A service department ID is extracted from the database based on the accessing results. A service request message is transmitted from the center system to a service department indicated by the service department ID.Type: GrantFiled: June 26, 2000Date of Patent: August 10, 2004Assignee: Ricoh Company, Ltd.Inventor: Koubun Suzuki
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Patent number: 6775228Abstract: The invention relates to a method and an ATM Network Element (ATM NE-1) for automatic protection switching of a Transmission Convergence Sublayer SubNetwork Connection TCS SNC.Type: GrantFiled: May 22, 2000Date of Patent: August 10, 2004Assignee: Nokia Networks OyInventor: Juan Ignacio Solana De Quesada
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Patent number: 6775253Abstract: Active packets are utilized by a mobile terminal in a wireless network to set-up a wireless call via a signaling process, and for mobility management via a mobility process as the mobile terminal moves from one cell to another in a subnet. Active packets instantiate an agent in the fixed network to handle signaling between the mobile terminal and the fixed network, and then instruct the agent to negotiate setup of an open channel between the mobile terminal and the destination device. Moreover, active packets foster the handoff of the mobile terminal as the terminal moves from one cell to another in a subnet. Finally, the signaling process and mobility process are coordinated so that lost active packets are mitigated during roaming by the mobile terminal.Type: GrantFiled: February 24, 2000Date of Patent: August 10, 2004Assignee: Telcordia Technologies, Inc.Inventors: Prathima Agrawal, Jyh-Cheng Chen
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Patent number: 6771631Abstract: In telecommunications networks, various kinds of information transfer occur where transmission periods are not transmitted. As a result of this, parts of the information packets contained in the concerned transmission periods are lost and the probability of loss of these information packets increases considerably. With the method according to the invention, the quality of information transfer is ensured in a telecommunications network where the information packet is coded and interleaved into at least two transmission periods. According to the invention, the method is characterized in that therein the transmission power of at least one transmission period related to the transmission of the same information packet is increased, when at least one transmission period is not transmitted.Type: GrantFiled: November 12, 1999Date of Patent: August 3, 2004Assignee: Nokia CorporationInventor: Antti Lappeteläinen
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Patent number: 6771702Abstract: In an image transmission method using an asynchronous transfer mode (ATM) network, one image data is divided into a plurality of groups each corresponding to one traffic service class of an ATM layer in accordance with frequency components of the image data, and virtual connections (VCs) are established for the traffic service classes. Then, each group of the image data is transmitted by the corresponding virtual connection.Type: GrantFiled: November 15, 1999Date of Patent: August 3, 2004Assignee: NEC CorporationInventor: Minori Hara
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Patent number: 6771637Abstract: This invention is a gateway apparatus arranged between a circuit switched network and the Internet. The gateway apparatus comprises a prior connection section setting a channel on the Internet according to the call setting request received from the circuit switched network before the call setting request is received from the circuit switched network, and a call setting section setting a connection corresponding to the call setting request on the Internet by using the channel set by the prior connection section when the call setting request is received from the circuit switched network.Type: GrantFiled: November 12, 1999Date of Patent: August 3, 2004Assignee: Fujitsu LimitedInventors: Hiroko Suzuki, Kazuyuki Ohtsu
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Patent number: 6771644Abstract: Program insertion in real time IP multicast enables the seamless insertion of a secondary program within an IP multicast session of a primary program. A primary content provider transmits its multimedia stream to a first proxy that transmits the data to a destination multicast session. A secondary content provider interested in inserting a program into that destination multicast session sends a request through a second proxy to the first proxy requesting a time slot to insert secondary program. The request includes the duration of the secondary program. The first proxy responds with a time slot or a denial of the request depending if a time slot is available. Assuming an available time slot, at the appropriate time the first proxy transfers control of the destination multicast session to the second proxy which transmits the secondary program. Upon completion of the secondary program the second proxy returns control of the session to the first proxy.Type: GrantFiled: September 17, 1999Date of Patent: August 3, 2004Assignee: Lucent Technologies Inc.Inventors: John Thomas Brassil, Sukesh Kumar Garg, Henning Gunther Schulzrinne
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Patent number: 6771622Abstract: An example application of the invention is directed to a mobile receiver searching pilot signals in a CDMA-based radiotelephone communications system. The receiver processes received pilot signals by first decimating those pilot signals that have a search window length that is greater than a threshold number of chips, into a plurality of sub-windows. The other pilot signals and the sub-windows are then searched using a common prioritization criteria. More specific implementations of this approach permit each search of this type to take a fixed amount of time, thereby making scheduling calculations easy to implement. Moreover, such implementations provide for all pilots to be searched equally often irrespective of window sizes, and for less likely candidates for idle handoff (pilots with longer window sizes) not to be given precedence over more likely idle handoff candidates.Type: GrantFiled: November 17, 2000Date of Patent: August 3, 2004Assignee: Koninklijke Philips Electronics N.V.Inventor: Debarag N. Banerjee
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Patent number: 6771653Abstract: A system for providing prioritized queue management within a data transmission network node that supports different types of data frame traffic is disclosed herein. The system includes a frame buffer for storing an incoming frame that has an identifiable frame type. A queue is pre-associated with the frame type of the incoming frame such that upon arrival of the frame at the network node, the queue stores a location address at which the frame is stored within the frame buffer such that the frame is maintained within the queue. The queue that contains the frame is stored within a frame table. Processing means are provided for determining a time at which the queue forwards the frame from the frame buffer in accordance with a pre-determined sub-queue priority list. The system further includes time metering means associated with the frame for temporally assigning the frame to a virtual sub-queue among multiple virtual sub-queues that are associated with the queue.Type: GrantFiled: September 19, 2000Date of Patent: August 3, 2004Assignee: International Business Machines CorporationInventors: Jean-Francois Le Pennec, Jacques Fieschi, Aline Fichou, Claude Galand
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Patent number: 6765910Abstract: A system (10) for communicating information includes a connecting link (50) to communicate ATM cells. A first switching system (14) receives ATM cells for at least first and second virtual circuits using a first link (20) and communicates ATM cells for the second virtual circuit using the connecting link (50). A second switching system (14) receives ATM cells for at least the first and second virtual circuits using a second link (20) and communicates ATM cells for the first virtual circuit using the connecting link (50). The first switching system (14) receives the ATM cells for the first virtual circuit from the second switching system (14), using the connecting link (50), and sequences all ATM cells for the first virtual circuit using first IMA functionality (80).Type: GrantFiled: September 15, 2000Date of Patent: July 20, 2004Assignee: Intel CorporationInventor: Brian W. Johnson
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Patent number: 6763013Abstract: The mobile ad hoc network includes a plurality of wireless mobile nodes and a plurality of wireless communication links connecting the nodes together. The nodes advertise using variable beacon signals. The method includes neighbor discovery with beacon signal detection. The method includes searching for the variable beacon signals at a given mobile node using an initial detection rate and at an initial detection frequency, and increasing a detection rate from the initial detection rate up to a maximum detection rate while searching for the variable beacon signals at the initial detection frequency. The detection frequency may also be varied.Type: GrantFiled: September 4, 2002Date of Patent: July 13, 2004Assignee: Harris CorporationInventor: Robert A. Kennedy
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Patent number: 6763039Abstract: A method for locating a synchronization sequence S having a length s in a serial bit stream, and an arrangement for the implementation of such a method make use of the fact that the synchronization sequence S is composed of a plurality of individual words A, B, C having respective lengths a, b, c. The search in the serial bit stream relates only to a word length a, b, c and not to the entire length s of the synchronization sequence S. When a word A, B, C has been recognized, the expected value for the search for the next word A, B, C is set by a controller. The expected values for the words A, B, C to be searched are programmable and thus can be freely defined for each application, so they can be selected in an application-specific manner. The words A, B, C to be searched can be characterized by two auxiliary bits Z whose formation is exactly inverted relative to that of normal data words A, B, C. This guarantees an unambiguous and dependable recognition of these words A, B, C.Type: GrantFiled: November 17, 2000Date of Patent: July 13, 2004Assignee: Siemens AktiengesellschaftInventors: Bernhard Kroemer, Karsten Laubner
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Patent number: 6762996Abstract: A traffic policer is coupled to a network buffer. A cell stream is supplied to this traffic policer. When a frame has a mix of tagged and non-tagged cells, the distribution of tagged and non-tagged cells is determined. Based on this distribution and some predetermined criteria, a decision is made to tag all cells of the frame or to set all tags to non tagged in the frame. Exiting frames only exist of all tagged cells or all non tagged cells. Entire frames are discarded in case of congestion.Type: GrantFiled: February 3, 1999Date of Patent: July 13, 2004Assignee: AlcatelInventor: Guido Henri Marguerite Petit
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Patent number: 6760324Abstract: A method, system, and computer program product that provides voice over the Internet communication. A Voice over the Internet (VoIP) system includes a gateway server that handles calls received from a public switched telephone network and a packet-switched network, a routing server, and a database server. Messages can be sent between the gateway server, routing server, and database server over the packet-switched network. A provisioning system is coupled to the database server. A management system is also coupled to the gateway server, routing server, database server, and management system over the packet-switched network. A network manager automatically queries a client database to determine an update, and sends a message representative of the update to at least one of the gateway server, routing server, database server, and management system over the packet-switched network. A licensing server supports licensing of the VoIP system.Type: GrantFiled: September 10, 1999Date of Patent: July 6, 2004Assignee: Array Telecom CorporationInventors: Mark Scott, Anita Cheng, Simon Ho, George Irimescu, Dorel Voineag, William Wong, Min Yao, Row J. Zadeh