Using Direct Sequence Modulation (epo) Patents (Class 375/E1.002)
  • Patent number: 11888659
    Abstract: There is described an RFID IC, comprising: i) an RFID interface configured to receive a digitally modulated signal, wherein the digitally modulated signal comprises: a first slot with a first pulse, and a second slot with a second pulse; and ii) a processing unit configured to a) determine a first position of the first pulse in the first slot, b) filter a region that follows the determined first position of the first pulse, c) determine a second position of the second pulse in the second slot, and, if the second position of the second pulse cannot be determined in the second slot, assume that the second position of the second pulse in the second slot is at the filtered region.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: January 30, 2024
    Assignee: NXP B.V.
    Inventors: Christian Weidinger, Heinz Umfahrer
  • Patent number: 11817990
    Abstract: A method for detecting a constant envelope burst-mode radio frequency (RF) signal with a known periodic synchronization sequence (PSS) represented therein includes transforming an incoming RF signal into a digital baseband signal (DBS), and processing the phase domain part by: 1) applying a correlation algorithm to correlate the DBS with a synchronization pattern corresponding to the PSS, 2) filtering the resulting correlation signal for removing at least a DC component of the correlation signal, 3) down-sampling the filtered correlation signal with a sampling time controlled by a clock aligned with amplitude peaks in the filtered correlation signal, 4) performing a decision algorithm on the down-sampled signal to determine if PSS is present in the incoming RF signal, then 5) generating an output signal indicating if the known PSS is present in the incoming RF signal, in response to a result of the decision algorithm.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: November 14, 2023
    Assignee: Kamstrup A/S
    Inventors: Alex Birklykke, Mathias Rønholt Kielgast
  • Patent number: 11381959
    Abstract: There is provided a terminal including a processor that includes, in capability information, a frequency separation between a lower edge of a component carrier with a lowest frequency for supported carrier aggregation and an upper edge of a component carrier with a highest frequency for the supported carrier aggregation; and a transmitter that transmits the capability information to a base station.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: July 5, 2022
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Hiromasa Umeda, Kei Andou
  • Patent number: 11162750
    Abstract: A system and method for detecting the presence of firearms adapted with embedded RFID tags is disclosed. A plurality of RFID interrogators sequentially and intermittently transmit short burst interrogating signals thereby causing RFID tags within range to transmit a responsive signal which may be used to activate alarms and other security measures. RFID tags are configured using an ASIC chip enabled for 10 Ghz wireless communication. The ASIC chip is embedded within a bolt carrier that includes a slotted antenna aperture resulting in extended range wireless communication. A plurality of RFID interrogators are installed in an detection area and transmit a radio frequency signals which excite any RFID enabled devices within range causing the devices to generate and transmit a response signal which may be used to trigger a variety of security measures such as sounding an alarm, locking doors, contacting law enforcement, etc.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: November 2, 2021
    Inventors: Donald L. Weeks, Randy Karr
  • Patent number: 11128374
    Abstract: The invention relates to base stations in communication networks. In more particular the invention relates to cellular base stations such as 3G/4G and WLAN base stations. Some or all of the aforementioned advantages of the invention are accrued with a fully photonic base station (200) that powers itself with solar photons, provides radio network access and relays an optical photonic beam (220, 221, 230, 231) through air encoded with the data from radio signals of computer users and mobile phone users to the Internet and the global telecommunication network. A system engineer can build a network with the inventive base stations in a matter of days. He simply walks to the roof of houses and points the optical beams to other base stations in adjacent houses.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: September 21, 2021
    Inventor: Mikko Vaananen
  • Patent number: 11101910
    Abstract: Aspects of the present disclosure provide design that allows for assigning code sequences for UEs for use in RSMA.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: August 24, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Seyong Park, Jing Lei, Renqiu Wang, Joseph Binamira Soriaga, Jing Jiang, Tingfang Ji, Naga Bhushan
  • Patent number: 10904854
    Abstract: A communications access point may provide access to a wireless communications network to a user device located at a first location. The communications access point may determine that the user device is moving from the first location to a second location where access to the wireless network is limited or not available. In response to the determination, the communications access point may provide access to the wireless network at the second location by extending a coverage area of the wireless network.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: January 26, 2021
    Assignee: Comcast Cable Communications, LLC
    Inventors: Frances Bevan, David Markowitz, Michael Rekstad, Jae Sim, Christopher Stone
  • Patent number: 10656244
    Abstract: Aspects of the invention provide improvements to electromagnetic and other wave-based ranging systems, e.g., RADAR or LIDAR systems, of the type having transmit logic that transmits a pulse based on an applied analog signal. The improvements are characterized, in part, by a SERDES having a serializer (a/k/a a “transmit side”) that is coupled to the transmit logic. The serializer has (i) an input to which a pattern on which the pulse is based is applied and (ii) an output from which a serialization of the pattern is applied to the transmit logic. The improvements are further characterized in that the SERDES has deserializer logic (a/k/a a “receive side”) that is coupled to receive logic and that deserialize a received “analog” signal containing possible reflections of the pulse.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: May 19, 2020
    Assignee: General Radar Corp.
    Inventor: Dmitry Turbiner
  • Patent number: 10560134
    Abstract: A system and method for frequency-agnostic multiband aggregation of received signals is disclosed for use in high capacity communication. The system includes two up-conversion mixer stages and one down-conversion mixer stage, with SAW filter banks or other band pass filter banks used to select frequency bands of interest for aggregation based on configurable multiband combination settings. The method provides for the design of optimal multiband aggregation configuration settings.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: February 11, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Tan Huy Ho, Xinyu Xu, David Neal Wessel
  • Patent number: 10541750
    Abstract: The invention relates to base stations in communication networks. In more particular the invention relates to cellular base stations such as 3G/4G and WLAN base stations. Some or all of the aforementioned advantages of the invention are accrued with a fully photonic base station (200) that powers itself with solar photons, provides radio network access and relays an optical photonic beam (220, 221, 230, 231) through air encoded with the data from radio signals of computer users and mobile phone users to the Internet and the global telecommunication network. A system engineer can build a network with the inventive base stations in a matter of days. He simply walks to the roof of houses and points the optical beams to other base stations in adjacent houses.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: January 21, 2020
    Inventor: Mikko Vaananen
  • Patent number: 10425305
    Abstract: A wireless access point array having a plurality of access point radios, a monitor radio and an array controller. The array controller includes processes, methods and functions for verifying the operation of the access point radios. The access point radios may be verified by attempting to establish a data connection between the monitor radio and each of the access point radios.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: September 24, 2019
    Assignee: Riverbed Technology, Inc.
    Inventors: Kirk Mathews, Dirk Gates, Michael B. Rydalch
  • Patent number: 10182090
    Abstract: One embodiment of the present invention sets forth a method for updating content stored in a cache residing at an internet service provider (ISP) location that includes receiving popularity data associated with a first plurality of content assets, where the popularity data indicate the popularity of each content asset in the first plurality of content assets across a user base that spans multiple geographic regions, generating a manifest that includes a second plurality of content assets based on the popularity data and a geographic location associated with the cache, where each content asset included in the manifest is determined to be popular among users proximate to the geographic location or users with preferences similar to users proximate to the geographic location, and transmitting the manifest to the cache, where the cache is configured to update one or more content assets stored in the cache based on the manifest.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: January 15, 2019
    Assignee: NETFLIX, INC.
    Inventors: David Fullagar, Kenneth W. Florance, Ian Van Hoven
  • Patent number: 10177950
    Abstract: A receiver for spread spectrum signals comprising a first part for preprocessing and digitizing a received signal, and a second part for tracking the digitized signal comprising a carrier loop and a code loop. The code loop comprises a generator for a reference receiver signal for correlation with the received signal and the code loop is configured to modify the reference signal to shape a correlation function between the received signal and the reference receiver signal. The first part is adapted to multiply the received spread spectrum signal with a first analog spectral offsetting signal provided for down-converting the received signal to an intermediate frequency and a sub-carrier frequency, selected from a set of sub-carrier frequencies, such that the received signal is down-converted and spectrally offset in the analog domain during a time interval covering at least one chip of a spreading code of the received signal.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: January 8, 2019
    Assignee: AIRBUS DS GMBH
    Inventors: Jean-Jacques Floch, Francis Soualle
  • Patent number: 9794885
    Abstract: Providing a power-saving mode for control channel monitoring in discontinuous reception (DRX) scenarios. Upon waking from a sleep mode at the conclusion of a DRX off period, a baseband modem may transition to a low-power mode configured to receive and decode only a control channel, such as a physical downlink control channel (PDCCH). If the control channel indicates during a DRX on period that communication traffic will be transmitted to the baseband modem, then the baseband modem may transition to a full-power mode to receive the communication traffic. Otherwise, the baseband modem may transition back to the sleep mode. The low-power mode may be implemented by a dedicated set of hardware configured to draw less power than a full set of hardware configured to implement the high-power mode.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: October 17, 2017
    Assignee: Apple Inc.
    Inventors: Syed Aon Mujtaba, Moustafa M. Elsayed, Tarik Tabet
  • Patent number: 9736680
    Abstract: A method can include receiving, at a first computing device having one or more processors, a command to transfer a data payload to a second computing device and information from the second computing device using a near-field communication (NFC) protocol. The information can be indicative of a plurality of communication protocols capable of being received at the second computing device, including the NFC communication protocol. Additionally, the method can include estimating a transfer time corresponding to each of the plurality of communication protocols. Each of the transfer times can be indicative of an amount of time to transfer the data payload between the first and second computing devices using its corresponding communication protocol. The method can also include selecting a specific communication protocol based on the estimated transfer times and transmitting the data payload using the specific communication protocol.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: August 15, 2017
    Assignee: GOOGLE INC.
    Inventors: Jeffrey William Hamilton, Nicholas J. Pelly, Benjamin J. Dodson
  • Patent number: 9696779
    Abstract: An embodiment of the invention provides an electronic device. The electronic device includes a first wireless module, a second wireless module and a controller. The first wireless module is controlled by a chipset to communicate with a portable device. The second wireless module communicates with the portable device. The controller is coupled to the second wireless module. When the first wireless module and the chipset are disabled, the electronic device receives a signal from the portable device via the second wireless module.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: July 4, 2017
    Assignee: Nuvoton Technology Corporation
    Inventors: Shih-Hao Yeh, Shih-Hsuan Yen, Shih-Hsin Su
  • Patent number: 9411603
    Abstract: A starting method including, after being powered on, obtaining, by a central processing unit (CPU), a boot image file, where the boot image file includes universal boot code and differentiating boot code, the universal boot code is obtained by compiling a universal part in boot code of different chips, the universal boot code includes a first boot code segment and a second boot code segment; reading the first boot code segment from the boot image file, running the first boot code segment, and reading indication information of the differentiating boot code; reading, from the boot image file, the differentiating boot code according to the indication information of the differentiating boot code, and running the differentiating boot code; and running the second boot code segment, to complete booting of the chip to which the CPU belongs.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: August 9, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Kang Peng, Hongwei Yang, Can Liu
  • Patent number: 8923364
    Abstract: In general, the subject matter described in this disclosure can be embodied in methods, systems, and program products for transmitting data over discontiguous portions of radio frequency spectrum. Data that is to be wirelessly transmitted to a remote computing device is received. A first signal that encodes the data across a band of radio frequencies is generated. The first signal is split into multiple signals, each of the multiple signals being associated with a different portion of the band of radio frequencies. Each of the multiple signals is filtered to isolate each respective one of the multiple signals to its associated portion of the band of radio frequencies. At least one of the multiple signals is frequency translated. Each of the multiple signals are combined after the filtering of each of the multiple signals. The second signal is provided for wireless transmission by an antenna.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 30, 2014
    Assignee: Google Inc.
    Inventor: C. Philip Gossett
  • Patent number: 8724724
    Abstract: The present disclosure provides for the construction and use of a set of Zero-Correlation-Zone (ZCZ) Concatenated Complementary Pair (CCP) sequences with zero-correlation-zone range greater than one or with zero-correlation-zone range equal to one and the sequence set size greater than two. Complementary pair sequences A and B are selected and, for each member of the set of ZCZ CCP sequences, sign sequences pA and pB are combined with the complementary pair sequences to form a member ZCZ CCP sequence of the set. A ZCZ CCP sequence modified by propagation over a communication channel may be identified by cross-correlation with ZCZ CCP sequences of the set. A set of sign sequences may be constructed by recursive expansion from an initial set or found by a computer search. The sequences may be used in a transceiver of a portable electronic device or other communication device.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 13, 2014
    Assignee: BlackBerry Limited
    Inventors: Yan Xin, Yongkang Jia, Huan Wu, Shouxing Qu, Arnold Sheynman
  • Patent number: 8693524
    Abstract: A synchronization method for impulse system ultra-wideband takes frame as basic unit for data transmission, each frame is divided into a preamble symbol part and a data part, wherein the preamble symbol part sends a known impulse sequence for channel estimation and synchronization; the data part takes the information to be transmitted; the preamble symbol part is divided into two parts of a positive and negative impulse sequence, which includes odd impulses with alternant positive and negative polarities, and a same direction impulse sequence, which is composed of impulses with same polarity and is the same as the polarity of the last impulse in the positive and negative impulse sequence. The method provides such advantages as high synchronization precision, small storage space, and capability of immediately finding out the synchronization position etc., and provides an important value for the development of the impulse system ultra-wideband wireless communication technique.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 8, 2014
    Assignee: Southeast University
    Inventors: Zaichen Zhang, Liang Wu, Xutao Yu, Guangguo Bi, Xiaohu You
  • Patent number: 8582694
    Abstract: The present invention provides a high-performance adaptive digital receiver with adaptive background control that optimizes the performance in rapidly changing signal environments and provides 3.6 GH; instantaneous bandwidth, SFDR>90 dB, SNR=66 dB, with dynamic digital channelization. The receiver takes advantage of several levels of adaptivity that conventional approaches do not offer. In addition to a dynamic digital channelizer that is adaptively tuned based on detected signals, the present invention employs a powerful software reconfigurable digitizer that is adaptively optimized for the current signal environment to control important receiver parameters such as bandwidth, dynamic range, resolution, and sensitivity.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 12, 2013
    Inventors: Scott R. Velazquez, Rich J. Velazquez
  • Patent number: 8571089
    Abstract: Techniques are provided which may be implemented using various methods and/or apparatuses in a receiver and/or other like device to determine an SPS time using SPS signals based on a correlation process. A verification process may be performed, for example, that verifies a maximum peak in comparison with other peak information resulting from the correlation process, for example, by considering a ratio of a maximum peak to a next maximum peak. A time-setting algorithm may be selected, for example, based, at least in part, on a time uncertainty and/or on a type of demodulation performed on the SPS signal. The time-setting algorithm may operatively control one or both of the correlation and/verification processes in a desired manner given the time uncertainty and/or type/mode of demodulation performed.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: October 29, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Duong A. Hoang, Douglas Neal Rowitch, Jie Wu, Emilija M. Simic, Dominic Gerard Farmer
  • Patent number: 8391340
    Abstract: A low-cost GPS/GNSS receiver receives a satellite signal at an RF frequency (fRF). The GPS/GNSS receiver includes a front end section for receiving the satellite signal and generating a digital complex signal having a first bandwidth, the received satellite signal being converted into a complex signal before digitizing, a signal capturing section for searching for and acquiring the satellite signal, the signal capturing section including a capture memory, a baseband processor for tracking the acquired satellite signal, and a signal splitter coupled to the front end section. The signal splitter splits the digital complex signal into two bandwidths, by generating a narrowband digital complex signal having a second bandwidth substantially smaller than the first bandwidth. The signal splitter provides the narrowband digital signal to the capture memory and the wider first bandwidth digital complex signal to the baseband processor.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: March 5, 2013
    Assignee: Magellan Systems Japan, Inc.
    Inventor: Lawrence R. Weill
  • Patent number: 8363867
    Abstract: A low-power implant system. The system includes an implant for implantation into a person, such as a cochlear implant or a middle ear implant. The implant is capable of communicating with a device via transmission of ultra wideband pulses. The device may be adapted to be worn external to the person, or may be a second implant. So as to conserve battery power, the transmitted ultra wideband pulses may have a low duty cycle of approximately 1/1000 or less. Power savings may also be realized by using time-gating amplifiers in the implant and/or device receiver.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: January 29, 2013
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Erwin Hochmair, Ingeborg Hochmair
  • Patent number: 8208513
    Abstract: Receivers and reception methods conduct spread spectrum reception using the energy of multiple bits, preferably a substantial number of bits, in a packet for correct alignment of the spreading code at the receiver. Code acquisition, as well as packet detection and acquisition are provided by embodiments of the invention. Preferred embodiment receivers and reception methods provide packet detection at low SINR looking at energy of multiple bits of the packet, frame synchronization using short preamble, timing recovery at low SINR looking at energy of multiple bits of the packet, quick code acquisition using parallel search for all possible code phases, code acquisition at low SINR, and tracking of acquired timing and code phase. Preferred embodiment receivers and reception methods use the energy of multiple bits for making decisions.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: June 26, 2012
    Assignee: The Regents of the University of California
    Inventors: Manish Amde, Rene L. Cruz, Kenneth Yun