Patents Examined by Jamal A. Fox
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Patent number: 6788667Abstract: A system and method permits a wireless communication terminal (such as a mobile telephone) to access Internet audio services. The wireless terminal communicates in WAP protocol to a WTA Internet server acting as a gateway between a mobile network and a wired network, and requests a channel to an audio service residing on a particular Internet origin server. The WTA server initiates establishment of an audio channel with the origin server. The WTA server also instructs the wireless terminal to answer automatically the next voice telephone call it receives, and the WTA server instructs the mobile network to place a voice phone call to the wireless terminal. The wireless terminal automatically answers, and there is then established a speech path from the wireless terminal, over the mobile network, through the WTA server, to the origin server. The wireless terminal may access the Internet audio service over this audio path.Type: GrantFiled: June 20, 2000Date of Patent: September 7, 2004Assignee: Nokia CorporationInventor: Evgenij Beresin
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Patent number: 6788702Abstract: Scheduling packets are exchanged among neighboring nodes of a computer network. These scheduling packets include descriptions of a transmitting node's 2-hop neighborhood within the computer network, and nodes are able to determine transmission schedules from information received via said scheduling packets. Preferably, the computer network is a synchronized network in which time is dived into a number of frames, each of which are made up of a plurality of slots. In such cases, the exchange of scheduling packets should occur within a first number of the slots of each frame, preferably in a common communication channel. Transmission schedules may be determined, at least in part, because nodes advertise their availability using the scheduling packets. The above-mentioned descriptions may include an identification of received communication times and/or channels, an identification of requested communication times and/or channels and an identification of available communication times and/or channels.Type: GrantFiled: October 15, 1999Date of Patent: September 7, 2004Assignee: Nokia Wireless Routers, Inc.Inventors: J. Joaquin Garcia-Luna-Aceves, David A. Beyer, Chane L. Fullmer
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Patent number: 6785290Abstract: ATM cells inputted into a physical layer interface (12) are once stored in a cell buffer (24) regardless whether they are ATM cells to be outputted from a switching interface (22) or ATM cells addressed to host CPU (26), and the ATM cells addressed to the host CPU are stored in a temporary RAM (18) at a timing controlled by a scheduler (16). The host CPU 26 read out ATM cells stored in the temporary RAM (18) when necessary. Thereby, no FIFO memory is needed to temporarily store ATM cells addressed to the host CPU (26).Type: GrantFiled: October 24, 2000Date of Patent: August 31, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Toshio Fujisawa, Toshitada Saito, Jun Hasegawa
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Patent number: 6785264Abstract: An inexpensive and flexible method and apparatus for inter-working in circuit, packet and circuit packet networks between one or more access protocols and one or more destination protocols. By consolidating the inter-working logic in an Abstracted Common Call Control Inter-working Function (ACCCIF) that operates on abstracted signals and events, configuration and maintenance are simplified. At the same time, extending the invention by adding, updating or deleting protocols may be achieved quickly and consistently while the need to buy additional equipment in order to extend services is minimized. A preferred embodiment utilizes protocol engines and is implemented as a finite state machine.Type: GrantFiled: October 18, 2000Date of Patent: August 31, 2004Assignee: Tollbridge TechnologiesInventors: J. Martin Borden, Arun V. Mahajan
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Patent number: 6775262Abstract: A system and method for associating an MSISDN of a mobile terminal with a temporarily assigned IP address is disclosed. A first server located within a wireless communications network generates and transmits a start packet to a WAP network responsive to an access request by a mobile terminal. The start packet includes the MSISDN of the mobile terminal and an assigned IP address. A second server within the WAP network extracts the MSISDN in the IP address from the received start packet and stores this information together within a database. When a WAP application is utilized, the MSISDN may be determined from the database and placed in an HTTP-header of packets to the WAP application.Type: GrantFiled: June 19, 2000Date of Patent: August 10, 2004Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Robert Skog, Ingvar Berg
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Patent number: 6771599Abstract: A communication control method accomplishes minimum bandwidth guarantee and maximum bandwidth restriction and further allocates an extra-bandwidth in accordance with user's contact bandwidth. Fixed-length packets are once stored in corresponding partitions of a buffer in accordance with connection information contained in the packets and then transmits the packets from the storage sections in succession. Retrieval of a connection where the number of transmitted packets does not reach a lower-limit throughput and a packet to be transmitted exists in the corresponding partition is made with first priority, and retrieval is further made in order for a connection where the number of transmitted packets does not reach an intermediate throughput and a connection where the number of transmitted packets does not reach an upper-limit throughput. If the retrieval shows a hit connection, the packets are transmitted from the corresponding partition and one-time retrieval comes to an end.Type: GrantFiled: October 24, 2000Date of Patent: August 3, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiro Aoyama, Yuji Hashimoto
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Patent number: 6768747Abstract: A method and apparatus are provided that allows timing to be determined in two steps. According to one aspect of the present invention, the invention includes searching a received digital signal burst for a known repeating core sequence, the core sequence having a first symbol sequence, and, upon finding one of the core sequences, determining sequence timing of the found core sequence using the found core sequence. The invention further includes searching the received burst for a marker sequence following the repetition of the core sequence, the marker sequence having a second symbol sequence different from the first symbol sequence and upon finding the marker sequence, determining timing of the received digital signal burst using the found marker sequence.Type: GrantFiled: November 30, 2000Date of Patent: July 27, 2004Assignee: ArrayComm, Inc.Inventor: Mithat C. Dogan
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Patent number: 6765906Abstract: A method and system for use in data communications. The method and system substantially ensure that actual data transmission per unit time from at least one input-buffered crossbar switch ingress to at least one input-buffered crossbar switch egress substantially satisfies a designated target amount of actual data transmission per unit time.Type: GrantFiled: April 28, 2003Date of Patent: July 20, 2004Assignee: Cisco Technology, Inc.Inventor: Hiroshi Suzuki
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Patent number: 6763024Abstract: Methods and devices for detecting cell loss in telecommunication devices, such as ATM switches, attach cell loss detection information to cells in cell streams passing through the telecommunications devices. The cell loss detection information can trigger counters at up stream and down stream locations thereby avoiding the problem of synchronizing counters and ensuring that all cells to be counted have been flushed through the telecommunications device. The cell loss detection information can include a sequence number in a sequence of n sequence numbers where n is not a power of 2. Preferably n=2P−1, where P is an integer. Such series of sequence numbers allow the detection of lost cells in bursts consisting of a number of lost cells which is a power of 2. The methods and apparatus of the invention permit detection of unintentionally dropped cells in a call without the need to tear down the call.Type: GrantFiled: October 14, 1999Date of Patent: July 13, 2004Assignee: Alcatel Canada Inc.Inventors: Randall Allan Law, Steven Douglas Margerm
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Patent number: 6754218Abstract: A diversity handover processing apparatus includes a shared buffer memory for storing signals input from a mobile station and converted into ATM cells, a combining/copy information table for storing connections necessary to one of a combining and a copy of the ATM cells received from the shared buffer memory, a combining/copy controller for reading information concerning connections in the combining/copy information table, a shared buffer memory handling section for designating addresses contained in the information read by the combining/copy controller, and a combining/copy processor for performing one of combining and copy of the ATM cells read out of the shared buffer memory in respect of the radio terminal.Type: GrantFiled: August 25, 1999Date of Patent: June 22, 2004Assignee: Hitachi, Ltd.Inventor: Masaru Murakami
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Patent number: 6744776Abstract: A novel method of servicing multiple data queues having different priorities is provided in a network switch. A dequeuing logic circuit services the data queues in a round-robin fashion. Programmable number of data packets is selected from each data queue in each cycle. The dequeuing logic circuit compares the number of data packets selected from a current data queue in a current cycle with the preprogrammed number of data packets set for the current queue, and selects a data packet from the current data queue only if the number of packets selected from the current data queue in the current cycle is less than the preprogrammed number. Selection of a data packet from the current data queue is bypassed, processing a next data queue, if the number of packets selected from the current data queue in the current cycle is not less than the preprogrammed number.Type: GrantFiled: October 18, 2000Date of Patent: June 1, 2004Assignee: Advanced Micro Devices, Inc.Inventors: Mohan V. Kalkunte, Shashank Merchant, Phil Simons
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Patent number: 6741598Abstract: A switching method, switching equipment and a switching network are provided by each of which the data is transferred economically and with small transfer delay and the unit to which the data is to be transferred is selected every channel. In AAL type apparatuses, CPS packets a, b, c and d in which the voice data signals are encoded and the like are processed with an AAL type 2 to be multiplexed in ATM cells. The ATM cells in which the CPS packets are multiplexed are inputted to switching equipment. By a voice data decode unit within the switching equipment, for example, the CPS packets a and b are decoded into PCM codes a′ and b′, respectively. ATM cells of an ATM type 1 in which the CPS packets a′, b′, y′ and z′ are multiplexed are generated by a channel switching unit within a network to be suitably inputted to AAL type 1 apparatuses.Type: GrantFiled: August 25, 1999Date of Patent: May 25, 2004Assignee: Hitachi, Ltd.Inventors: Masaru Murakami, Naruhito Nakahara, Kota Miyoshi
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Patent number: 6741591Abstract: A search engine interface system comprising a header analyzer, which is coupled to a search engine interface adaptor that receives from header parser via a search engine interface bus output data signals comprising, such as, for example, a 32-bit data word 13, Data_Out [31 . . . 0], together with a data valid flag signal 15 (Dvalid_Out ), and a command valid flag signal 17 (Cvalid_Out). In response to receiving a search command identified via the search engine interface bus, search engine interface adaptor also generates an output memory store search request provided to a memory storage, such as a ternary CAM, or alternatively to a SRAM, for pattern matching. Results of search from a memory storage CAM or SRAM are then provided back to search engine adaptor, which then conveys the search response via search response signals, such as via search engine interface bus data word Data_In[31 . . . 0] and valid response flag signal, Valid_In, back to header analyzer.Type: GrantFiled: November 3, 1999Date of Patent: May 25, 2004Assignee: Cisco Technology, Inc.Inventors: George Kaldani, Kamran Izadi
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Patent number: 6728226Abstract: A multicast message communicating system is disclosed, that comprises a base station for transmitting a multicast message using a multicast channel, and a plurality of mobile stations for receiving the multicast message from the base station, wherein the base station has a receiving portion for receiving transmission power increase request signals from the plurality of mobile stations corresponding to reception powers of the multicast message received from the plurality of mobile stations, a reception power detecting portion for detecting the reception powers of the transmission power increase request signals received from the receiving portion, a transmission power control generating means for deciding and generating a transmission power increase request signal or a transmission power decrease request signal for the plurality of mobile stations corresponding to the received powers.Type: GrantFiled: June 20, 2000Date of Patent: April 27, 2004Assignee: NEC CorporationInventor: Kosuke Naito
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Patent number: 6724751Abstract: A distributed voice processing system comprises two or more voice processing machines 50A, 50B, connected by an isochronous network. In the preferred embodiment this network comprises an ATM switch 80 and appropriate ATM links 82A, 82B. Each of the voice processing machines includes telephone line interface units 52 connected to the telephone network 5 via respective telephony channels 15, a TDM bus 54, voice resources 55 (such as voice recognition, voice response functionality, etc), and an ATM adapter 58 to allow communications over the ATM network. In operation, a call may be received at the line interface unit at a first voice processing machine, and placed onto a TDM bus at that machine. The call is then taken off the TDM bus by the ATM adapter, and routed over the ATM network to the ATM adapter at a second machine, which places the call on the TDM bus at this second machine.Type: GrantFiled: March 24, 2000Date of Patent: April 20, 2004Assignee: International Business Machines CorporationInventors: Robert Michael Jordan, Andrew Ritchie
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Patent number: 6721336Abstract: STS-n with enhanced granularity is achieved by using an ATM cell framer which includes a plurality of cell delineators and cell assemblers for conversions between broadband STS-n which occupies at least a portion of a bandwidth of a synchronous payload envelope (SPE), such as a synchronous optical network (SONET) bandwidth, and asynchronous transfer mode (ATM) cells. The SONET bandwidth is flexibly and efficiently allocated for transporting the broadband STS-n which carries ATM data, wherein n can be varied in small increments to allow the SONET bandwidth to be shared with narrowband STS if the broadband STS-n does not occupy the entire SONET bandwidth.Type: GrantFiled: December 22, 1999Date of Patent: April 13, 2004Assignee: AlcatelInventors: Rodney Witel, Jason Dove, Paul Franceschini
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Patent number: 6721337Abstract: A method for transmission of compressed data for a digital audio broadcasting system comprises the steps of producing digital information representative of an audio signal; estimating the number of bits to be allocated to the digital information in a modem frame; encoding the digital information within the estimated number of bits to produce encoded data; removing selected bits from the encoded data; adding bits corresponding to digital messages to the encoded information to form a composite modem frame; formatting the composite modem frame bits to produce formatted composite modem frame bits; and transmitting the formatted composite modem frame bits. The invention also encompasses transmitters that perform the method.Type: GrantFiled: August 24, 1999Date of Patent: April 13, 2004Assignee: iBiquity Digital CorporationInventors: Brian William Kroeger, Stephen Douglas Mattson
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Patent number: 6721293Abstract: A receiver for use in a CDMA telecommunications system is disclosed. The receiver includes at least one antenna for receiving signals from a CDMA channel, where the received signals include a desired user signal. The receiver also includes combining circuitry, for performing chip waveform filtering and maximal ratio combining, to produce mutually correlated chip estimates of the received signals. The receiver further includes an adaptive separator, for adaptively separating the mutually correlated chip estimates, and a correlator, for despreading the output of the adaptive separator to obtain an estimate for data symbols of the desired user signal. In addition, the receiver further includes estimating circuitry, coupled to the combining circuitry, for estimating a response of the channel, where the combining circuitry utilizes the channel response estimate as a reference.Type: GrantFiled: March 7, 2000Date of Patent: April 13, 2004Assignee: Nokia CorporationInventors: Petri Komulainen, Markku J. Heikkila
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Patent number: 6707815Abstract: A method and system for use in data communications. The method and system substantially ensure that actual data transmission per unit time from at least one input-buffered crossbar switch ingress to at least one input-buffered crossbar switch egress substantially satisfies a designated target amount of actual data transmission per unit time.Type: GrantFiled: July 2, 1999Date of Patent: March 16, 2004Assignee: Cisco Technology, Inc.Inventor: Hiroshi Suzuki
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Patent number: 6693875Abstract: A communication network system has a plurality of communication terminals, each having a first transmitting unit and a first receiving unit. Information is transmitted and received among the communication terminals through the first transmitting unit and the first receiving unit. At least two of the communication terminals are used as relay terminals. Each of the relay terminal has a second transmitting unit and a second receiving unit for performing only one-to-one communication. A received-information relay unit transmits information received from the first receiving unit to the second transmitting unit and transmits information received from the second receiving unit to the first transmitting unit. A relay-terminal-information transmitting unit transmits to the first transmitting unit ID information of the relay terminal and ID information of a terminal to which the relay terminal is providing relay services. A storage unit stores the information of the relay terminals.Type: GrantFiled: March 27, 2000Date of Patent: February 17, 2004Assignee: Kabushiki Kaisha ToshibaInventors: Shinzo Matsubara, Yosuke Tajika