Patents Examined by William Cumming
  • Patent number: 6535715
    Abstract: A communication system is described. The communication system includes a distribution network between a head end terminal and at least one remote unit. The head end terminal receives upstream telephony and control data modulated on a plurality of orthogonal carriers in a frequency bandwidth over the distribution network. The head end terminal includes a polyphase filter that filters at least the upstream telephony data to provide ingress protection for the modulated orthogonal carriers. The communication further includes a service unit multicarrier modem associated with the at least one remote unit and operatively connected to the distribution network for modulating at least upstream telephony information on at least one carrier orthogonal at the head end terminal to at least one other carrier in the frequency bandwidth.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: March 18, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventors: Mark J. Dapper, Michael J. Geile
  • Patent number: 6535731
    Abstract: For the expansion of a cordless telecommunications system, in particular a DECT cordless telecommunications system, with respect to great transmission ranges in cordless telecommunications there is provided in a cordless telecommunications system (PIZSL-TKS) a relay station (RS) which is assigned at least one cordless mobile station (PIZ-MS). In the case of cordless telecommunications, the relay station (RS) replaces a cordless base station (PIZ-BS) and, in the case of the expanded cordless telecommunications, it is designed as a cordless mobile station (MIZ-MS, MAZ-MS, HYZ-MS).
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: March 18, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus-Dieter Pillekamp, Manfred Tasto
  • Patent number: 6529736
    Abstract: A navigation configuration is described that utilizes a communications network, an access device, a processing system central to the communications network, a navigation database connected thereto, a location determining device, a route control system connected to the route planning system and to the location determining device through the communications network, and an output device connected to the route control system through a media transfer device. The output device outputs local navigation information for directing a travel direction of a user.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: March 4, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventor: Peter Kopetzky
  • Patent number: 6529717
    Abstract: A mobile communication device utilizes the short message service of its communication network to generate messages. The messages are constructed from a series of fields. From stored data a series of questions and optional answers are pressented. The user can select the appropriate answer from the memory. Each of the answers is correlated to a message component which are compiled by the microprocessor to form a complete message.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: March 4, 2003
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Lioudmila Blants, Petteri Saarinen
  • Patent number: 6529706
    Abstract: An aircraft satellite communications system for distributing Internet service and television programming from direct broadcast satellites to aircraft. The aircraft include a direct broadcast satellite receiver system, an aircraft computer network, and back-channel communications system equipment. The direct broadcast satellites receive uplink direct broadcast satellite television programming and Internet service from a direct broadcast satellite ground station that includes a direct broadcast satellite television program source and an Internet interface. A back-channel communications system provides communications with the aircraft to provide interactive Internet service to the aircraft over the back-channel communications system. A telephone system is connected to a back-channel communications system ground station and to a switch center connected to the telephone system and the Internet.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 4, 2003
    Assignee: Rockwell Collins, Inc.
    Inventor: James P. Mitchell
  • Patent number: 6529746
    Abstract: A cradle for a wireless device such as a cellular telephone. The cradle provides a second antenna for antenna diversity operation of the wireless device. Optionally, the cradle contains any of hardware circuitry, processing, and software to provide antenna diversity operation in conjunction with the wireless device.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: March 4, 2003
    Assignee: Motorola, Inc.
    Inventor: Michael D. Kotzin
  • Patent number: 6529707
    Abstract: A dual mode telephone is used with a satellite communication adapter. A cellular-type handportable phone is equipped with a connector for the attachment of accessories. This connector provides a satellite communications adapter accessory access to the handset's signal processing resources which may operate in an alterative mode to process signals received from the satellite and converted by the adapter into a suitable form for processing. The processing translates the satellite signals into voice or data, and vice-versa.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: March 4, 2003
    Assignee: Ericsson Inc.
    Inventor: Paul W. Dent
  • Patent number: 6526295
    Abstract: A power savings method comprises delaying turning on the local oscillator of a mobile phone while the processor of the mobile phone sorts through a previously received neighbor list. While the local oscillator is settling at its operating frequency, the mobile phone receives signals from the neighbor list channels and measures their relative strength. Compensation factors are applied to correct for frequency errors arising from the fact that the local oscillator has not settled at its operating frequency. A method is further disclosed for generating the compensation factors for use in the power savings method.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: February 25, 2003
    Assignee: Ericsson Inc.
    Inventor: Eric Alan Shull
  • Patent number: 6519244
    Abstract: In a CDMA transmitter operable in response to a plurality of input data signals to produce a transmission signal, a dummy symbol is generated by a dummy symbol generator to reduce a peak value of a synthesized signal obtained by subjecting the input data signals to spread spectrum modulation. The dummy symbol is attained by spreading the peak value by spread codes which are not used for the spread spectrum modulation and is subtracted from the synthesized signal to suppress the peak value. A level adjustment value is multiplied by a peak suppressed signal so as to compensate a variation of average power which might occur due to the dummy symbol.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: February 11, 2003
    Assignee: NEC Corporation
    Inventor: Yoshihiro Unno
  • Patent number: 6519454
    Abstract: A wireless communications system provides call transfer capability for an incoming call to a mobile subscriber unit. The mobile subscriber unit requests the call transfer to a serving MSC. The serving MSC relays the request to a home location register, and the home location register executes the request by initiating the call transfer in conjunction with an originating MSC. This arrangement obviates the need for supporting call transfer on the serving MSC and the need for inter-MSC facilities once the call transfer is completed. Moreover, the approach of the present invention enables call transfer to be ubiquitously supported within a wireless communications system.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: February 11, 2003
    Assignee: Lucent Technologies Inc.
    Inventors: Robert Thomas Calabrese, Harold Robert Smith, Jr., Jeffrey Arthur Zahnle
  • Patent number: 6516186
    Abstract: In an image-rejection receiver having a first frequency conversion stage (1, 2, 9) having a pair of frequency mixers (1,2) each supplied external radio frequency signal (RF) and first local frequency signal (LOCAL1) with quadrature phase relations (9), a second frequency conversion stage (3-6, 10) having two pairs of frequency mixers (3-4, 5-6) at each output of each first stage mixer and second local frequency signal (LOCAL2) with quadrature phase relations (10), and an adder (7) and a subtractor (8) for providing sum and difference of amplitude of outputs of said second frequency conversion stage to provide inphase component (BBI) and quadrature-phase component (BBQ), no filter is used for removing an undesirable image signal which is generated in frequency conversion. A control circuit (11) is provided to keep accurate quadrature phase relations for said first local frequency signal, and said second local frequency signal, by measuring D.C. component of a product of outputs of two of mixers.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: February 4, 2003
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Akihiro Yamagishi, Tsuneo Tsukahara, Mitsuru Harada
  • Patent number: 6516194
    Abstract: The invention is a Roaming Solution network system, the system including a Roaming Server, a National Location Register, and an 800 number Remote Switching Unit. The system is integrated with a standard SS7 type telecommunications network and further coupled to an account based billing and call control platform that allows registered wireless credit limited subscribers to place and receive calls when roaming outside of their Home Provider's network. The invention verifies that the wireless subscriber's account balance is sufficient to place or receive the call, translates the account balance into talk minutes, and monitors the call for talk duration. The Roaming Solution network system is further operable such that if the wireless subscriber exceeds the available account balance, the system tears down the call in the first negative minute and immediately decrements the wireless subscriber's account.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: February 4, 2003
    Assignee: VeriSign, Inc.
    Inventor: Daniel A. Hanson
  • Patent number: 6510229
    Abstract: A communication system for transferring digital data over a distribution network is described. The communication system includes an interface for receiving successive strings of digital data from a source, each string representing a certain number of bits. The system also includes a symbol mapper for converting the strings into a sequence of symbols representing a constellation of discrete values of the amplitude and phase of a carrier for a predetermined period. The constellation is rotationally asymmetric for valid ones of the data strings. The system further includes a modulator for synthesizing a plurality of orthogonal carriers from said symbols a transmitter for sending the modulated carriers over a distribution network.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: January 21, 2003
    Assignee: ADC Telecommunications, Inc.
    Inventor: Michael J. Geile
  • Patent number: 6507732
    Abstract: A DPRAM is placed in the RF path before the digital to analog converter, to provide dynamic path gain compensation to the digital signal prior to conversion to an analog signal. The DPRAM stores corrections to the signal to compensate for amplitude losses in the signal arising from heat and non-linearities. The DPRAM has two sets of identical addresses. A logic switch, alternately directs an input signal to one of the two sets of addresses. Pre-calculated signal values which compensate for path gain are stored in one of the two sets of addresses in the DPRAM. The signal input to the DPRAM is directed to the other block. The value of the signal input to the DPRAM will determine the address to which the new value can be found. It is this new value which is actually input to the DAC and from which an analog signal is created.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: January 14, 2003
    Assignee: Lucent Technologies Inc.
    Inventors: Miguel Dajer, Edward Ellis Eibling, Mark Y. McKinnon
  • Patent number: 6504831
    Abstract: A system for distributing radio frequency signals in a wireless communication network that provides an economical method of establishing and then later enhancing network coverage and capacity. The system centrally deploys Base Transceiving System (BTS) equipment and distributes their signals through a fiber network to individual cable microcell integrators (CMI) associated with the individual cell sectors of the system. The CMIs contain filtering equipment that permit them to be assigned in simulcast groups, depending upon the desired network capacity. For example, in an initial build out situation, a large number of CMIs operate at a common carrier frequency, modulation code, and/or code phase. As network demands increases, additional capacity is provided by reprogramming filters and/or signal processors in the CMIs.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: January 7, 2003
    Assignee: Lockhead Martin Corporation
    Inventors: Ken C. Greenwood, Erik T. DeVinney, Richard P. Slabinski
  • Patent number: 6505044
    Abstract: A method, a system, or an article of manufacture provides Mobility Management (MM), for example, an update procedure, in a Core Network (CN) of a mobile communication system. The Mobile Station (MS) includes an indicator which defines an update type. The update type includes: all CN entities; one type of CN entity only. If the indicator has the update type of all CN entities, the MS registers all CN entities. If the indicator has the update type of one type of CN entity only, the MS registers the one type of CN entity only. The CN entities may be MSC/NVLR CN entity, SGSN CN entity, or other CN entity. The method includes the MS determining to which of the CN entity to perform the update procedure; the MS updating the CN entity; the CN acknowledging the MS whether update is successful or failed; and the CN acknowledging the MS whether update of other CN entity is needed, if needed, the CN defining to which of the CN entity to perform update, and continuing the update of the defined CN entity.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: January 7, 2003
    Assignee: Nokia Telecommunications Oy
    Inventors: Juha B├Ąck, Heikki Einola, Tony Hulkkonen, Seppo Huotari, Lauri Lahtinen, Khiem Le, Heikki Lindholm, Jaakko Rajaniemi, Juha Timonen
  • Patent number: 6501939
    Abstract: A dual-mode telephone with a satellite communication adapter is disclosed. According to one embodiment of the present invention, a cellular-type handportable phone is equipped with a connector for the attachment of accessories. This connector provide a satellite communications adapter accessory access to the handset's signal processing resources which may operate in an alternative mode to process signals received from the satellite and converted by the adapter into a suitable form for processing. The processing translates the satellite signals into voice or data, and vice-versa.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: December 31, 2002
    Assignee: Ericsson Inc.
    Inventor: Paul W. Dent
  • Patent number: 6501943
    Abstract: A diversity receiver estimates a reception weight sing signals received at a plurality of antennas, a target pattern former forms a target radiation pattern based on the estimated reception weight, a transmission pattern former forms a transmission radiation pattern with a transmission weight using an arbitrary transmission weight as an initial value, a controller limits an angle range in which formation of the target radiation pattern and formation of the transmission radiation pattern are executed, an error detector detects an error between the target radiation pattern and the transmission radiation pattern, and subjects the detected error to logarithmic transformation, an updator updates the transmission weight so as to reduce the error subjected to logarithmic transformation, and a directivity former provides a transmission signal with a directivity according to the transmission radiation pattern formed using an updated transmission weight.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: December 31, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Minako Ide, Katsuhiko Hiramatsu, Keiji Takausaki, Hideki Yukitomo
  • Patent number: 6501951
    Abstract: A method for re-selecting control channels in a mobile station reduces the use of resources by limiting an evaluation of candidate control channels to those channels which satisfy certain criteria and are deemed to be eligible control channels. As a consequence, resources are not spent on attempting to re-select a control channel that is not compatible with the mobile station.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: December 31, 2002
    Assignee: AT&T Wireless Services, Inc.
    Inventor: Michael R. Moore
  • Patent number: 6496686
    Abstract: A communication terminal includes a transmitter for transmitting bursts of a modulated carrier. An interference suppressor suppresses an known interference signal caused by the transmission of the bursts and includes a frequency separator which separates an input signal into sub-band signals. The interference suppressor further includes an amplitude adjustor which adjusts the amplitude of the sub-band signals having spectral components of the interference signal, and a combiner which combines the sub-band signals to form a combined output signal. The amplitude adjustor includes a multiplier which multiplies the amplitude of the sub-band signals with a value which decreases with increasing strength of the spectral components of the interference signal.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: December 17, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Ahmed N. Charkani (El Hassani), Gilles P. Miet