Patents Issued in August 14, 2007
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Patent number: 7257087Abstract: An apparatus and method calculate a round-trip delay (RTD) between first and second endpoints within a network, where an intermediate point is selected between the first and second endpoints within the network. A network analyzer determines a first data transmission time from the intermediate point to the first endpoint and back to the intermediate point, determines a second data transmission time from the intermediate point to the second endpoint and back to the intermediate point, and adds the first and second data transmission times to determine therefrom the round trip delay between the first and second endpoints within the network.Type: GrantFiled: October 4, 2002Date of Patent: August 14, 2007Assignee: Agilent Technologies, Inc.Inventor: William Grant Grovenburg
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Patent number: 7257088Abstract: The present invention relates to multiple antenna wireless access points that multiplex signals by spatial division. In particular, it relates to grouping clients of the access point for spatial division multiplexing. Particular aspects of the present invention are described in the claims, specification and drawings.Type: GrantFiled: May 11, 2004Date of Patent: August 14, 2007Assignee: 3Com CorporationInventor: Niels Van Erven
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Patent number: 7257089Abstract: A method and network that employs N attendant, messaging and content-based speech systems networked together to transfer call sessions via a VoIP bi-directional link. To enhance network performance, each of the N systems of the network includes an extension database having N city or system directories identifying the extensions and the names associated with such extensions. The caller is given a prompt to provide the network a city where the target resides. Thereafter, the network determines the target's extension by directly accessing the appropriate directory.Type: GrantFiled: August 30, 2002Date of Patent: August 14, 2007Assignee: Applied Voice and Speech Technologies, Inc.Inventors: Michael Metcalf, Peter Dingus
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Patent number: 7257090Abstract: A teleconferencing system (1) comprises multiple teleconferencing bridges (5, 6, 7) each having an associated database (8, 9, 10). A server (20) hosts a local engine (22) associated with each bridge, and a multi-site engine (21). For a “global” conference utilising the resources of at least one other system (2), the multi-site engine (21) communicates over TCP/IP (36) with an equivalent multi-site engine of the other system to set up a link line via PSTN (31) between the bridges (5, 6, 7, 41). During the conference, the multi-site engine (21) automatically transmits event-driven updates to the remote system, and likewise receives such updates from the other system.Type: GrantFiled: December 3, 2002Date of Patent: August 14, 2007Assignee: Avaya Technology LLCInventors: David Seavers, Bruce Walsh, James Taggart, Roger Moloney, Hugh Maguire, Dave McCarthy, Eamon Troy
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Patent number: 7257091Abstract: A coupling facility is coupled to one or more other coupling facilities via one or more peer links. The coupling of the facilities enables various functions to be supported, including the duplexing of structures of the coupling facilities. Duplexing is performed on a structure basis, and thus, a coupling facility may include duplexed structures, as well as non-duplexed or simplexed structures.Type: GrantFiled: May 8, 2002Date of Patent: August 14, 2007Assignee: International Business Machines CorporationInventors: David A. Elko, Steven N. Goss, Michael J. Jordan, Georgette L. Kurdt, Jeffrey M. Nick, Kelly B. Pushong, David H. Surman
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Patent number: 7257092Abstract: In a method of communicating between a communication station (1) and at least one data carrier (2 (DC)) comprising an information data block (IDB) and useful data (UD=N×UDB), an inventorization procedure with successive procedure runs is carried out at least one part of a block region (NKP-IDB) of the identification data block (IDB) not yet known in the communication station (1) and, in addition, specific useful data (n×UDB) are transmitted from each data carrier (2 (DC)) to the communication station (1) in the implementation of the inventorization procedure, such that after termination of the inventorization procedure at least one part of the identification data block (IDB) of each data carrier (2 (DC)) and the associated specific useful data (n×UDB) are known in the communication station (1).Type: GrantFiled: March 11, 2002Date of Patent: August 14, 2007Assignee: NXP B.V.Inventor: Franz Amtmann
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Patent number: 7257093Abstract: A localized wireless communication system for communication between a plurality of circuit boards, and between electronic components on the circuit boards. Transceivers are located on each circuit board and electronic component. The transceivers communicate with one another over spread spectrum radio frequencies. An asynchronous transfer mode protocol controls communication flow with asynchronous transfer mode switches located on the circuit boards.Type: GrantFiled: October 10, 2001Date of Patent: August 14, 2007Assignee: Sandia CorporationInventors: Edward L. Witzke, Perry J. Robertson, Lyndon G. Pierson
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Patent number: 7257094Abstract: The present invention jointly controls rate and power in a fashion that enables control of the two variables in one dimension. In some embodiments, this is done by ordering the possible transmit rate (320) and transmit power (340) combinations in a logical sequence that meets specific conditions. The present invention can first minimize the transmit time and then reduce the transmit power. The present invention can maintain the maximum rate possible that enables the receiving station to decode packets with an acceptable probability.Type: GrantFiled: January 16, 2002Date of Patent: August 14, 2007Assignee: Texas Instruments IncorporatedInventor: Matthew B. Shoemake
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Patent number: 7257095Abstract: A system and method is described for saving power in a wireless network, using a physical layer address filtering protocol based on a partial address subset of the complete destination MAC address. The system comprises a PHY layer filtering protocol for generating the partial address and writing the partial address into a PHY layer header portion (e.g., PLCP header) of a sending station, or reading the partial address from the PHY layer header portion upon transmission of each frame. A receiving station receives and decodes these PHY layer header portion bits, in accordance with the protocol, and compares whether the subset of bits match that of the stations' own partial address. If a station finds a match, the station then continues further decoding the frame at PHY layer and send the complete frame to the MAC layer for further processing. The stations that do not have a match will not activate their MAC layer components.Type: GrantFiled: July 30, 2003Date of Patent: August 14, 2007Assignee: Texas Instruments IncorporatedInventor: Yonghe Liu
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Patent number: 7257096Abstract: A (GSM) and (GPRS) power ramping controller and an associated power ramping method are provided. Each frame to be transmitted has a plurality of slots, and each slot has a data period and a guard period for classifying continuous slots of the plurality of slots, and the guard period has a U-shaped power level waveform.Type: GrantFiled: July 8, 2004Date of Patent: August 14, 2007Assignee: Samsung Electronics Co., Ltd.Inventor: Dong-han Kim
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Patent number: 7257097Abstract: Apparatus and methods for signal search in a mobile communication system can process input signals in parallel. A signal searcher apparatus in a communication system can include a first sequential storage device and a second sequential storage device for respectively storing PN codes and input signals. The signal searcher can include a plurality of despreading devices that despread in parallel the input signals having I and Q components by respectively using the PN codes. In a case where the length of coherent accumulation is a plurality of the number of despreading devices, additional buffers store (e.g., temporarily) the accumulated despreaded signals each having I and Q components that are equal to the number of searched PN offsets. According to preferred embodiments of the present invention, pilot signals searching speed can be increased and/or the length of PN offset and coherent calculation can be increased.Type: GrantFiled: December 19, 2001Date of Patent: August 14, 2007Assignee: LG Electronics Inc.Inventor: Hyung Sung Jung
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Patent number: 7257098Abstract: In a wireless communications system, a base station unit covers a plurality of communications station units and downlink and uplink communication between the base station unit and the communications station unit are wireless. Each of the communications station units covered by the base station unit is assigned to one of a plurality of groups that perform receiving or sending in the same time band. Each group's communication time band is made different for downlink and uplink communication. The downlink communication and uplink communication between the base station unit and plurality of communications station units is performed in time-division multiplexing regarding each of the plurality of groups to achieve a good assignment of groups. At the time of group assignment, the total amount of sending and receiving are adjusted for each group based on the traffic situation in order to reduce the empty time in downlink communication and uplink communication.Type: GrantFiled: July 8, 2002Date of Patent: August 14, 2007Assignee: Hitachi Kokusai Electric Inc.Inventors: Hiroyo Sato, Hiroyuki Murakami, Kenya Uedo
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Patent number: 7257099Abstract: A control apparatus for controlling a wireless communication system, which provide enhanced communication efficiency when a single apparatus performs a plurality of wireless communications. A timing signal generation logic circuit generates transmission and reception timing control signals for controlling timing of transmission and reception by respective ones of a Bluetooth module and a wireless LAN module based on respective states thereof. MAC sections of the respective modules control transmission and reception by the respective ones of the Bluetooth module and the wireless LAN module, based on the respective corresponding transmission and reception timing control signals generated by the timing signal generation logic circuit.Type: GrantFiled: July 13, 2004Date of Patent: August 14, 2007Assignee: Canon Kabushiki KaishaInventor: Toshihiko Myojo
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Patent number: 7257100Abstract: A packet-switching connection is set up from a mobile station through a first transceiver unit, whereby the mobile station is assigned to a first cell and a first residence zone. As the mobile station moves to a second cell and a second residence zone, the connection is assigned a residence zone change identification. A transfer procedure for the packet-oriented connection from the first cell to the second cell is carried out. After the transfer procedure a data exchange by the packet-switched connection is reestablished. After reestablishing the data exchange a procedure for residence zone exchange is carried out.Type: GrantFiled: September 4, 2003Date of Patent: August 14, 2007Assignee: Siemens AktiengesellschaftInventors: Bernd Kurzmann, Mathias Pieroth
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Patent number: 7257101Abstract: According to an embodiment of the invention, a method and apparatus are described to receive a signal, determine a quality of the received signal, and transmit a power control message, with a selected size, the power control message being based at least in part on the quality of the received signal. The power control message requests a modification in transmission power or indicates the deviation of the signal quality from a reference signal quality.Type: GrantFiled: September 30, 2002Date of Patent: August 14, 2007Assignee: Arraycomm, LLCInventors: Paul Petrus, Sundar G. Sankaran
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Patent number: 7257102Abstract: Carrier frequency offset (CFO) estimation from preamble symbols. Any communication receiver may be adapted to perform the CFO estimation. The CFO estimation is performed using a low complexity, high accuracy CFO estimation method. The operation may be described as follows: each element of a received sequence is divided by the corresponding preamble element, the resulting sequence is divided into N subgroups, and each subgroup is then averaged. The phase differential of the resulting sequence is computed, averaged, and used to compute an estimate of the carrier frequency offset. This approach to performing CFO estimation is of relatively high estimation accuracy and of relatively low computational complexity.Type: GrantFiled: April 2, 2002Date of Patent: August 14, 2007Assignee: Broadcom CorporationInventors: Jonathan S. Min, Nabil R. Yousef
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Patent number: 7257103Abstract: The present invention is relative to a method for wireless communication with channel share function. There are a first T/R (Transmitting/Receiving) unit and a second T/R unit in a wireless communication channel. The method comprises steps of: transmitting a first data in a first time slot by the first T/R unit, and transmitting a second data in a second time slot by the second T/R unit; deciding a synchronous beginning time slot by the time when the first T/R unit receives the second data; and transmitting the first data at a third time slot by the first T/R unit after the synchronous beginning time slot.Type: GrantFiled: February 7, 2003Date of Patent: August 14, 2007Assignee: Winbond Electronics CorporationInventors: Tain-Der Yeh, Chun-Ping Lin
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Patent number: 7257104Abstract: In a communication system for a mobile node according to IPv6, a virtual network prefix is configured as a prefix specific to a mobile node in a domain having a plurality of subnetworks. In the domain, a packet is sent to the mobile node by host-based routing on an IPv6 address formed of the virtual network prefix and an interface ID. The communications process with the mobile node which cannot identify a virtual network prefix is performed using a physical network prefix according to IPv6. Accordingly, nodes which can and cannot identify a virtual network prefix can coexist in the domain.Type: GrantFiled: February 28, 2002Date of Patent: August 14, 2007Assignee: Sony CorporationInventor: Kazuhiro Shitama
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Patent number: 7257105Abstract: A wireless station having a wireless network device capable of providing a link-layer interface to a wireless network, a method operating at the link layer (L2) in the wireless station, and a carrier medium carrying computer readable code segments that when executed on a processor in the wireless station implement the method. The method includes, prior to the station being associated with a wireless network, wirelessly receiving L2 frames transmitted from one or more wireless access point of one or more wireless networks that the station can hear. The method further includes gathering information about the received L2 frames, including L2 information and L3 information. The L3 information includes whether an AP is sending an IP packet from a mobility agent, such that the station may associate with a wireless network that is in communication with the mobility agent. The method further includes storing information about the wireless networks that the station can hear in a database.Type: GrantFiled: October 3, 2002Date of Patent: August 14, 2007Assignee: Cisco Technology, Inc.Inventors: Marco Molteni, Massimo G Lucchina, Pascal Thubert
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Patent number: 7257106Abstract: An integrated phone-based home gateway system. The integrated phone-based home gateway system is a multi-function wireless and wired networking, wireless and wired telephony, broadband, gateway device. It provides automatic wireless and wired broadband initialization, configuration and service provisioning, gateway, routing and bridging functionality, wireless and wired data and telephony functionality and allows resource sharing among multiple wireless and wired devices.Type: GrantFiled: April 14, 2003Date of Patent: August 14, 2007Assignee: 3e Technologies International, Inc.Inventors: Steven Chien-Young Chen, Ray Wang
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Patent number: 7257107Abstract: A system monitors and detects unauthorized wireless LAN access points and wireless devices. The system includes one or more wireless LAN monitoring devices, which detect and report the presence of unauthorized or “rogue” wireless LAN access points or wireless devices within a predetermined area, for example, within the vicinity of a wired LAN, including indoor and/or outdoor areas. Improved range is achieved through the use of preamplification and sectorized antennas. Larger areas may be covered using additional wireless LAN monitoring devices, which operate independently or cooperate together in the detection process. Geolocation is possible using single or multiple, cooperating monitoring devices. Provision can be made for monitoring devices to provide packet filtering on a wired LAN.Type: GrantFiled: July 8, 2004Date of Patent: August 14, 2007Assignee: Highwall Technologies, LLCInventors: Richard M. Swier, Jr., William R. Highsmith, Edward C. Gerhardt
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Patent number: 7257108Abstract: A network includes a plurality of wall plates, each of the wall plates couples a network resource such as a computer or a network attached device to the network and includes an RFID circuit to detect proximate devices having an RFID tag. The proximate devices can be network attached devices or non network attached devices such as desks, phones, and artwork. Logic is included within each wall plate which includes wall plate physical location information. The logic is designed to respond to a broadcast signal. In so doing, the physical location of any resource can be determined. The physical location of all known resources are provided to an inventory application in the network, thereby allowing network administrators and users to remotely determine the physical location (room, floor, building, etc.) of any and all known resources attached to the network. Likewise, local computer users are able to identify the network resources located in their vicinity.Type: GrantFiled: July 28, 2004Date of Patent: August 14, 2007Assignee: Lenovo (Singapore) Pte. Ltd.Inventors: Richard W. Cheston, Daryl Carvis Cromer, Dhruv Manmohandas Desai, Howard Jeffrey Locker, James Peter Ward
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Patent number: 7257109Abstract: The present invention allows an originating media gateway to advertise available resources so that one or more media gateway controllers can interact with a terminating media gateway to determine the best communication scheme to use when establishing a communication session between the originating and terminating media gateways. The communication scheme is selected based on the capabilities of the terminating media gateway in light of the resources advertised by the originating media gateway. The communication scheme for any given call is selected dynamically on a call-by-call basis.Type: GrantFiled: May 8, 2002Date of Patent: August 14, 2007Inventor: Dany D. Sylvain
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Patent number: 7257110Abstract: A call processing system includes an access gateway that has a local switching unit. The access gateway, in operation, provides access to voice signals and data signals. The call processing system also includes a call feature server that has a host interface platform configured to connect to the access gateway through a network. The call feature server, in operation, provides call control functionality to the local switching unit. The call feature server is configured to provide bearer control signals through a packet network to establish a bearer channel.Type: GrantFiled: September 30, 2002Date of Patent: August 14, 2007Assignee: Siemens Communications, Inc.Inventors: Amruth Laxman, Jack Bloch, Van Phung, Robert S. Stockdale, Salim Saba, Nicholas Cosmidis
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Patent number: 7257111Abstract: The present invention relates generally to telecommunication services and, in particular, to a system and method of managing a call, particularly with regard to a modification to bearer characteristics. In one aspect the invention provides a method and system of managing a call in a telecommunication system, the telecommunication system including a network having at least one call controller effecting a call control function and at least one bearer controller effecting a bearer control function, the call controller and the bearer controller separated by a vertical control protocol interface, including providing in at least one message, communicated within the telecommunication system, an indication of the capability of the at least one bearer controller to modify a characteristic of a bearer; and receiving and storing said indication in the at least one call controller.Type: GrantFiled: October 8, 2001Date of Patent: August 14, 2007Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Christian Groves, Ian Rytina, Phil Hodges, Juan Noguera-Rodriguez, Fredrik Åberg, John Kerr
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Patent number: 7257112Abstract: A method of conserving power in a WLAN receiver is provided wherein processing tasks that need only to be operated for a brief period of time during the reception of a received packet are enabled only during the brief period of time. The enabling includes providing multiple power control signals that are controlled by a state machine for enabling and disabling the processing tasks.Type: GrantFiled: November 28, 2003Date of Patent: August 14, 2007Assignee: Texas Instruments IncorporatedInventor: Jie Liang
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Patent number: 7257113Abstract: An advanced SONET add/drop multiplexer capable of supporting packet over SONET and multiprotocol label switching. The add/drop multiplexer is capable of adding and/or dropping both STM and packet traffic, such as Internet Protocol traffic. This SONET add/drop multiplexer allows Internet Protocol streams which are added or dropped at different nodes to be carried over the same SONET path in a network, thereby greatly saving bandwidth.Type: GrantFiled: February 4, 2002Date of Patent: August 14, 2007Assignee: Fujitsu LimitedInventor: Donald O'Connor
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Patent number: 7257114Abstract: A transmitting/receiving arrangement, gateway and method for transmitting data over packet network, where a cellular network is connected to a packet network and uplink data frames which carry coded data and certain signaling information related to the coding are transmitted from the cellular network towards the packet network, wherein at least all non-redundant information from the uplink data frames is extracted from the frames and transmitted over the packet network. The gateway connects a packet network to a telephony network.Type: GrantFiled: July 6, 2000Date of Patent: August 14, 2007Assignee: Nokia CorporationInventor: Tommi Koistinen
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Patent number: 7257115Abstract: Time-slot interchange (TSI) switches and a pipelined data memory address generation circuit are provided. The TSI switches and the pipelined data memory address generation circuit include a first pipeline stage that reads data from a connection memory. A second pipeline stage compares the data read from the connection memory to provide a bank selection value. Optionally, a third pipeline stage reads data from a data memory based on the bank selection value and the data read from connection memory. The timing of the pipeline stages may be adjusted such that the duration of the first pipeline stage is extended and the duration of the second pipeline stage shortened.Type: GrantFiled: July 25, 2002Date of Patent: August 14, 2007Assignee: Integrated Device Technology, Inc.Inventors: Frank Matthews, Dave MacAdam
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Patent number: 7257116Abstract: A method and system for manipulating packet header compression parameters, by substituting at least one instruction set associated with a PPP negotiation packet at the PPP layer of a protocol stack, the at least one instruction set for use in establishing a communication protocol and channel between a pair of correspondents. The method includes the steps of a software module coupled to a first correspondent examining all PPP negotiation packets from a second correspondent; the software module determining whether a first instruction set is present in the PPP negotiation packet; the software module discarding said first instruction set and replacing the first instruction set with a second instruction set; and at the second correspondent receiving the second instruction set associated with a communication protocol information.Type: GrantFiled: August 1, 2001Date of Patent: August 14, 2007Assignee: Certicom Corp.Inventors: Yuri Poeluev, Ronald G. Mercer
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Patent number: 7257117Abstract: A synchronizer/de-synchronizer maps continuous format signals of an arbitrary rate into frames of pre-selected single common rate, such as SONET frames, with no bits changed and very little jitter or wander added. In this way, the continuous format signal may be carried transparently as a tributary of a SONET network. Each frame comprises a definite number of fixed stuff bits, including transport overhead bits and reminder fixed stuff bits. A frame also comprises an adjustable number of adaptive stuff bits, resulting from the phase difference between the arbitrary rate and the common rate. A mapping function is performed in a tributary unit shelf of a SONET transport shelf, and the reverse mapping function is performed in a similar way at the far end of a SONET connection. The stuff bits are spread uniformly within the frame.Type: GrantFiled: April 18, 2002Date of Patent: August 14, 2007Assignee: Nortel Networks LimitedInventors: Kim B. Roberts, Ronald J. Gagnon, Paul A. Smeulders, Manoj Verghese, Roland A. Smith, Nazib A. Moledina
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Patent number: 7257118Abstract: A new type of data transport service which uses a frame relay layer 2 data link connection identifier (DLCI) to select among various service types, feature sets, and/or closed user groups (CUGs). A layer 3 address may be extracted from a layer 2 frame, and the layer 3 address information may be used to route a data packet over a packet-switched network according to the service classes, feature sets, and/or CUGs selected. At the destination, the layer 3 data packet may again be enclosed in a layer 2 frame with a DLCI indicating the service classes, features sets, and/or CUGs. Because the use of conventional permanent virtual circuits (PVCs) is not required in aspects of the invention, new methods of measuring and managing network traffic are presented.Type: GrantFiled: February 28, 2003Date of Patent: August 14, 2007Assignee: AT&T Corp.Inventors: Christopher J. Chase, Stephen L. Holmgren, John Babu Medamana, Vikram R. Saksena
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Patent number: 7257119Abstract: A multi-protocol label switching system using multiple cores. In establishing a virtual private network in a MPLS system, more than one core is available. Paths are established over each core separately and weights are assigned to the two routes. Thus, the route which is preferred by manually configuring in advance will be chosen.Type: GrantFiled: December 23, 2002Date of Patent: August 14, 2007Assignee: AT&TInventor: James Uttaro
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Patent number: 7257120Abstract: Associated with an optical transport system, a packet oriented supervisory network provides differentiated classes of service (CoS) for a plurality of WDM layer applications on diverse nodes such that as soon as a higher priority application or packet arrives, the lower priority application is affected in favor of the higher one. One or more optical control channels (OSC) are used as the physical medium for implementing the packet oriented supervisory network of the invention. This new functionality of the optical control channel (OSC) enables multiple services by allowing each application to use up to 100% of the OSC bandwidth, if no other application is using it.Type: GrantFiled: October 12, 2001Date of Patent: August 14, 2007Assignee: Altera CorporationInventors: Ross Alexander Saunders, Vipul Rawat, Enos Avid Lemus-Tejada, Masood Ehsen Azad, Ketan Bhalla, Dan Fossum
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Patent number: 7257121Abstract: A system and method of translating a set of transmission parameters related to a first transmission protocol from said first transmission protocol to a second transmission protocol for a data element being sent on a connection from a first communication network utilizing the first transmission protocol to a second communication network utilizing the second transmission protocol is provided. The method includes mapping a first parameter from the set of transmission parameters to a class of service value for the connection and mapping the class of service value and a second parameter from the set of transmission parameters to another parameter for the second transmission protocol.Type: GrantFiled: December 21, 2001Date of Patent: August 14, 2007Assignee: Alcatel Canada Inc.Inventors: Timothy Harris Kuhl, Mark Jason Thibodeau, David J. Maxwell, David Andrew Watkinson, John C. Fischer
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Patent number: 7257122Abstract: A server of a telecommunications systems including first mechanisms for connecting to a mobile communications system which in turn connects to terminals on a radio connection, and second mechanisms for connecting to another telecommunications systems of the Internet type. According to the invention, the server is thus arranged to receive commands from the terminals and convert them into a format compatible with at least one of the protocols of the other telecommunications system; and to receive information from the direction of the other telecommunications system and to convert it into a format compatible with at least one protocol of the mobile communications system.Type: GrantFiled: April 15, 1998Date of Patent: August 14, 2007Assignee: Nokia Siemens Networks OyInventor: Joonas Keturi
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Patent number: 7257123Abstract: A gateway enables mutual data communication between two or more networks by connecting the networks and forming a bypass path between the two networks to enable data communication therebetween when the gateway does not support a normal data communication mode. The gateway can form at least one physical communication path between the networks through the gateway even if the gateway cannot support a normal communication mode and/or power is interrupted to the gateway. Further, in spite of abnormal conditions, such as abnormal power supply to the gateway, if the bypass path is not formed, a user can compulsorily form the bypass path, thus improving reliability of a network system.Type: GrantFiled: October 8, 2002Date of Patent: August 14, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: In-Ho Choi, Young-Woo Kwon, Jun-Goo Lee, Yong-Seog Pahn
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Patent number: 7257124Abstract: In a first aspect, a network processor includes a scheduler in which a scheduling queue is maintained. A last frame is dispatched from a flow queue maintained in the network processor, thereby emptying the flow queue. Data indicative of the size of the dispatched last frame is stored in association with the scheduler. A new frame corresponding to the emptied flow queue is received, and the flow corresponding to the emptied flow queue is attached to the scheduling queue. The flow is attached to the scheduling queue at a distance D from a current pointer for the scheduling queue. The distance D is determined based at least in part on the stored data indicative of the size of the dispatched last frame.Type: GrantFiled: March 20, 2002Date of Patent: August 14, 2007Assignee: International Business Machines CorporationInventors: William John Goetzinger, Glen Howard Handlogten, James Francis Mikos, David Alan Norgaard
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Patent number: 7257125Abstract: A computer program product, apparatus, and method for communicating on a half-duplex channel includes transmitting a first frame; terminating transmission of the first frame when a collision is detected during the transmission; and transmitting a second frame before retransmitting the first frame when the second frame has a higher class of service than the first frame.Type: GrantFiled: January 22, 2002Date of Patent: August 14, 2007Assignee: Marvell International Ltd.Inventor: Donald Pannell
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Patent number: 7257126Abstract: The present invention discloses a communication terminal accommodation device that makes communication terminals under the control of different wireless LAN systems communicate with each other. In a first system, the transmission and reception periods of a downlink signal, a direct-link signal, and an uplink signal are set after the transmission and reception periods of RCH, BCH, FCH and ACH control channels. In a second system, the transmission and reception period of a PCF mode is set immediately after a beacon, and the transmission and reception period of a DCF mode is set after that. In the first system, a period after the PCF mode of the second system is set as an unused period, and the RCH reception period is set to start at the start time of the PCF mode of the second system.Type: GrantFiled: March 6, 2002Date of Patent: August 14, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Jun Hirano, Takashi Aramaki
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Patent number: 7257127Abstract: Control information associated with data bursts to be switched on a burst-switched router is transmitted using payload envelopes (100) on one or more control channels (16). A control channel scheduling module (86) defines sets of contiguous payload envelopes, referred to as “frontiers” (110). A frontier contains a predetermined number of payload envelopes that could be transmitted over a maximum time difference from the time of arrival of a control packet to a latest time of departure for the control packet. After selecting a control packet, a current frontier is determined from a current time and a frontier index. Scheduling information for the current and next frontiers is stored in memory (116). The memory is searched for an available gap to accommodate the control packet (144) in one of either the current set or a next frontier based on the scheduling information.Type: GrantFiled: June 21, 2002Date of Patent: August 14, 2007Assignee: Alcatel LucentInventor: Hakki C Cankaya
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Patent number: 7257128Abstract: A method for transmitting data between a master modem and at least one slave modem of a master-slave network in orthogonal frequency-division multiplexing, including assigning to each slave modem at least one transmit frequency band and at least one receive frequency band chosen in a range of frequencies likely to be processed by the master modem; and in each slave modem: oversampling, respectively undersampling, each transmitted or received symbol; and filtering upstream of the oversampling, respectively of the undersampling, by a band-pass filter of the corresponding assigned frequency band.Type: GrantFiled: June 5, 2002Date of Patent: August 14, 2007Assignee: STMicroelectronics S.A.Inventor: Denis J. Mestdagh
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Patent number: 7257129Abstract: A serial communications architecture for communicating between hosts and data store devices. The Storage Link architecture is specially adapted to support communications between multiple hosts and storage devices via a switching network, such as a storage area network. The Storage Link architecture specifies various communications techniques that can be combined to reduce the overall cost and increase the overall performance of communications. The Storage Link architecture may provide packet ordering based on packet type, dynamic segmentation of packets, asymmetric packet ordering, packet nesting, variable-sized packet headers, and use of out-of-band symbols to transmit control information as described below in more detail. The Storage Link architecture may also specify encoding techniques to optimize transitions and to ensure DC-balance.Type: GrantFiled: November 7, 2001Date of Patent: August 14, 2007Assignee: Silicon ImageInventors: Dongyun Lee, Yeshik Shin, David D. Lee, Deog-Kyoon Jeong, Shing Kong
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Patent number: 7257130Abstract: A system and method for using asymmetric companion codecs to establish and maintain a communication. A communication system endpoint replaces instances of a companion codec with the members of a group of all of the companion codecs for the endpoint and performs appropriate translations of compatible codecs to provide a communication between communication system endpoints.Type: GrantFiled: June 30, 2003Date of Patent: August 14, 2007Assignee: Texas Instruments IncorporatedInventor: Mihai Sirbu
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Patent number: 7257131Abstract: A communication system includes a cell site router that receives a voice traffic stream in a layer two based protocol. The cell site router removes redundant information to generate a compressed stream of payloads from the layer two based protocol voice traffic stream. The cell site router sorts each payload of the compressed stream according to its intended destination and generates a layer two packet for each group of payloads of the compressed stream having a same intended destination. The cell site router prioritizes for transmission each layer two packet with other packets not carrying the voice traffic stream and having the same intended destination The communication system also includes an aggregation node that receives packets from the cell site router. The aggregation node separates layer two packets from the other packets and extracts each payload from each of the layer two packets.Type: GrantFiled: December 13, 2002Date of Patent: August 14, 2007Assignee: Cisco Technology, Inc.Inventor: Malcolm M. Smith
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Patent number: 7257132Abstract: For providing a receiving contract service being convenient or friendly to both the broadcast service providers and the viewers, and in particular, for providing a digital broadcast receiver set, an information apparatus and a digital broadcasting receiving system, there is provided a system in which a digital broadcast receiver set 100, an output apparatus 110 and recording apparatuses 120 and 130 are connected with a control bus 10, wherein there are provided a designated program devising portion 203 for extracting a plurality of programs at the same time, a receiving contract managing portion 212 for managing information relating to receiving contacts, and a output destination supervising portion 213 for managing distributing destination of the broadcast programs at the present, thereby distributing the broadcast programs to the output apparatus 110 and/or the recording apparatuses 120 and 130, on a basis of the contents of the receiving contracts.Type: GrantFiled: February 5, 1999Date of Patent: August 14, 2007Assignee: Hitachi, Ltd.Inventors: Chiyo Akamatsu, Tetsuo Shinagawa, Yoshimichi Kudo
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Patent number: 7257133Abstract: A new algorithm for clock offset estimation for resources distributed across a network (such as the Internet). By exchanging a sequence of time-stamped messages between pairs of network nodes and separately estimating variable delays for each message direction, present inventive embodiments provide more accurate estimates for clock offset between node pairs. Present inventive algorithms operate in a variety of peer and server network configurations while providing significant improvement in convergence speed and accuracy.Type: GrantFiled: September 30, 2002Date of Patent: August 14, 2007Assignee: Lucent Technologies Inc.Inventors: Daniel R. Jeske, Ashwin Sampath
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Patent number: 7257134Abstract: A method of synchronizing the information held in a switching database associated with a switching function of a data switching node, with a data network node identifier record associated with a management processor enabling a managed mode thereof is provided. An entry of the switching database is modified. A status specifier corresponding to the modified entry is set to signify the modification thereof. An inspection of the switching database is initiated on the expiration of an adjustable timer, and the information held in modified switching database entries is synchronized with the data network node identifier record. This method of synchronization of the information held in the switching database spreads out of burst changes thereof over time. The advantages are derived from the use of a more economical management processor while providing the same or enhanced levels of service of the data switching node.Type: GrantFiled: October 3, 2001Date of Patent: August 14, 2007Assignee: Zarlink Semiconductor V.N. Inc.Inventors: James Ching-Shau Yik, Eric Lin
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Patent number: 7257135Abstract: A compressively-encoding-resultant video signal resulting from compressively encoding a video signal, a first compressively-encoding-resultant audio signal resulting from compressively encoding a first audio signal having a synchronized relation with the video signal, a reference clock information signal relating to synchronization between the compressively-encoding-resultant video signal and the first compressively-encoding-resultant audio signal, and an indication timing information signal designating an indication timing of the video signal are multiplexed to get an AV multiplexing-resultant signal. A second audio signal is compressively encoded to get a second compressively-encoding-resultant audio signal. A sound-production-timing information signal is added to the second compressively-encoding-resultant audio signal to get a substitution playback audio signal.Type: GrantFiled: October 25, 2002Date of Patent: August 14, 2007Assignee: Victor Company of Japan, Ltd.Inventor: Takayuki Sugahara
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Patent number: 7257136Abstract: A laser apparatus (100) for performing the laser machining operation by condensing the laser light output from a laser oscillator (3) is disclosed. A laser output value calculation unit calculates a laser output value (L1) based on a command value (L0) issued to a laser oscillator (2). A temperature change estimating unit (31) estimates the temperature change or the temperature (Te) of specified component element(s) (7a, 7b) of the laser apparatus based on the elapsed time (t) and the laser output value calculated by the laser output value calculation unit. An adjusting unit (32) adjusts the conditions for controlling the laser or the conditions for laser machining based on the temperature change or the temperature of the specified component element estimated by the temperature change estimating unit. A stable laser machining operation is performed without a temperature sensor. The laser output value (L1) may be measured by a laser power sensor (5).Type: GrantFiled: September 21, 2005Date of Patent: August 14, 2007Assignee: Fanuc LtdInventors: Atsushi Mori, Ryoma Okazaki, Minoru Ando