Having Specific Code Acquisition Or Tracking Patents (Class 375/134)
  • Patent number: 10541845
    Abstract: A system and method of multi-carrier communication utilizes a farm of superimposed code and random phase values for generation of carrier signals and is resistant to malicious and non-malicious interference in a wireless network, such as an ad-hoc mobile communication network. The system and method includes an encoding/decoding algorithm and the use of a unique and easily generated pseudo random multi-frequency waveform, has high dynamic range, and is flexibly adaptable for different radio networks. The system and method further includes broadcasting a message with a non-secret checksum that is encoded with a hash function.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: January 21, 2020
    Inventor: Kenneth Stuart
  • Patent number: 10524276
    Abstract: The present invention relates to a method for allocating transfer times of a low degree of complexity for improving physical-layer security in a wireless powered communication network. A method for allocating transfer times in a wireless powered communication network according to an embodiment of the invention can provide a low-complexity method of allocating transfer times that enables physical-layer security in a secure wireless powered communication network (WPCN) using an energy harvesting jammer, and this method can be utilized to establish an energy harvesting communication system that is efficient in terms of information security.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: December 31, 2019
    Assignee: Korea University Research and Business Foundation
    Inventors: Inkyu Lee, Jihwan Moon
  • Patent number: 10380220
    Abstract: An embedded system is described. The embedded system includes a processing circuit comprising at least one processor configured to support an implementation of a non-power-of-2 fast Fourier transform of length N using a multiplication of at least two smaller FFTs of a respective first length N1 and second length N2, where N1 and N2 are whole numbers; and a memory, operably coupled to the processing circuit and comprising at least input data.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: August 13, 2019
    Assignee: NXP B.V.
    Inventor: Naveen Jacob
  • Patent number: 10299147
    Abstract: A method includes receiving a composite signal (R(k)) comprising transmissions from a plurality of cells, and identifying a plurality of candidate cells (Nm) based on a first detection metric (?m) with respect to the composite signal (R(k)). The method also includes filtering the plurality of candidate cells (Nm) with respect to cell identifiers (m) of the plurality of candidate cells to obtain a plurality of filtered candidate cells (Nm?), and selecting from the plurality of filtered candidate cells (Nm?) a plurality of selected cells according to a selection criterion.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: May 21, 2019
    Assignee: Intel IP Corporation
    Inventors: Wen Xu, Xiaojun Ma
  • Patent number: 10205548
    Abstract: Some demonstrative embodiments include devices, systems and methods of communicating acoustic information of a distributed microphone array between mobile devices. For example, an audio processor may determine source information of one or more acoustic sources based on acoustic information sensed by a distributed microphone array including a first microphone of a first mobile device and a second microphone of a second mobile device.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: February 12, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Vered Bar Bracha, Amihai Kidron, Peter Kroon
  • Patent number: 10164484
    Abstract: Techniques are described herein for leveraging these existing components of electronic devices with wireless or internet connectivity to reduce cost, size and complexity of electronic devices while enabling wireless power transfer. The techniques described herein can also be utilized to new low cost dual-function devices that utilize one or more of the same components for both wireless connectively and wireless power transfer.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: December 25, 2018
    Assignee: Ossia Inc.
    Inventors: Hatem Zeine, Dale Mayes
  • Patent number: 10159073
    Abstract: Frequency management methods and communication networks utilizing such frequency management methods are disclosed. More specifically, multiple frequency sets may be utilized to facilitate frequency hopping and a frequency management method may implement various switching schemes to switch between the different frequency sets. Techniques such as synchronization and spectrum harvesting may also be provided to support utilization of multiple frequency sets, all of which may provide improved operation reliabilities and better handling of jamming signals.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: December 18, 2018
    Assignee: Rockwell Collins, Inc.
    Inventors: John Thommana, Naveen Rajanikantha, Lizy Paul
  • Patent number: 10043378
    Abstract: An apparatus is provided that includes a control panel of a security system that protects a secured geographic area, a plurality of sensors, a plurality of annunciators, a processor that wirelessly exchanges information with the sensors and the annunciators based upon a timing table defining a repeating superframe having a plurality of non-overlapping time periods including at least one response period, at least one request period, and at least one silent period, a processor of the control panel that transmits an activation message to one of the plurality of annunciators within the response period of a first of the plurality of non-overlapping time periods, and a processor of the one of the plurality of annunciators that processes the activation message and directly synchronizes an audio or visible output of the one of the plurality of annunciators to a subsequent one of the plurality of non-overlapping time periods.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: August 7, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Jesse J. Otis, Gourav Sharma, Andrew G. Berezowski, Shreelatha M
  • Patent number: 9961705
    Abstract: Embodiments of the present disclosure describe techniques for encoding beacon signals in wireless power delivery environments. More specifically, techniques are disclosed for encoding beacon signals to isolate client devices for wireless power delivery in wireless power delivery environments. The beacon signals can be encoded or modulated with a transmission code that is provided to selected clients in the wireless power delivery environment. In this manner, beacon signals from the select clients can be identified and the corresponding client devices isolated for wireless power delivery. In some embodiments, the transmission code can be a pseudorandom sequence that is used by the wireless power delivery clients to encode transmitted beacon signals.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 1, 2018
    Assignee: Ossia Inc.
    Inventors: Hatem Ibrahim Zeine, Prithvi Shylendra, Anas Alfarra
  • Patent number: 9793949
    Abstract: Secure and efficient methods and systems of providing multiple access interference constraints for frequency hopped spread spectrum communications are presented. The methods and systems leverage a cryptographic keystream generator and iterative indexing into shuffled lists to generate a constrained collision-free frequency hopping sequence. This flexible frequency hopping access (FFHA) can support varying hop frequency and bandwidth resources including secure operation for applications where the number of channels (hopping sequences) exceeds the number of hop frequency resources available.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: October 17, 2017
    Assignee: TrellisWare Technologies, Inc.
    Inventors: Reid Johnson, Mark Johnson
  • Patent number: 9766900
    Abstract: A method includes identifying, from among nodes within a multi-node system, a node that has a security setting satisfying a security setting criteria, booting the multi-node system with the identified node as the primary node, and operating the multi-node system using the security setting of the identified node. Accordingly, the method may provide dynamic selection of a primary node based upon the security setting criteria and the security settings of the nodes within the multi-node system. Optionally, the security setting of each node is stored in a trusted platform module. In non-limiting examples, the security setting criteria may be the highest security setting among all nodes within the multi-node system or a predetermined minimum security setting, such as a trusted execution technology setting.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: September 19, 2017
    Assignee: Lenovo Enterprise Solutions (Singapore) Pte. Ltd.
    Inventors: Raghuswamyreddy Gundam, Shiva R. Dasari
  • Patent number: 9729280
    Abstract: A method and apparatus for improving performance in communication systems is provided. In order to maintain the real time constraints of the communication systems, time intervals and indication signals are used in various implementations to indicate and/or force subsequent transmissions of encoded data. An indication signal can include, for example, modulation modification information for subsequent transmissions. In various other implementations, a quality metric is computed for the communication channel and is used to provide modified modulation scheme information to be subsequently used on the communication channel.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: August 8, 2017
    Assignee: THOMSON LICENSING
    Inventors: Joshua Lawrence Koslov, Wen Gao, Yik Chung Wu
  • Patent number: 9716603
    Abstract: An optical communication system with nonlinear equalization capability for equalizing distortions of a data communication channel, which comprises a processor for periodically gathering a predetermined number of consecutive data segments from an input data stream to a group and adding a known pilot sequence to the group, thereby forming a data frame; an optical transmitter at the input of the channel, for transmitting the data frames to a receiver, over the channel; a receiver at the output of the channel, for detecting the transmitted frames, the receiver including a demodulator.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: July 25, 2017
    Assignee: MULTIPHY LTD.
    Inventor: Or Vidal
  • Patent number: 9673634
    Abstract: In one aspect, the present invention provides a universal power supply for wired and wireless electronic devices. In a second aspect, the present invention provides a universal power supply that is reconfigurable to provide a wide range of power supply options.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: June 6, 2017
    Assignee: Access Business Group International LLC
    Inventors: David W. Baarman, William T. Stoner, Jr., Hai D. Nguyen
  • Patent number: 9577704
    Abstract: A method and apparatus for processing a signal is present. Information is carried in a frequency hopping signal. The frequency hopping signal is sent to a gateway in a communications network through a satellite. The frequency hopping signal is unprocessed by the satellite to identify the information in the frequency hopping signal.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: February 21, 2017
    Assignee: THE BOEING COMPANY
    Inventors: Irwin Balter, Dennis Gottman, Bret Michael Botzong, John M. Sullivan
  • Patent number: 9525354
    Abstract: A method of operating a power supply having a transformer, a transistor controlling the current through a primary side of the transformer, and a control unit for controlling the switching of the transistor to generate current pulses in the transformer, is suggested, the method comprising receiving a feedback signal, and exiting a burst mode and entering a normal mode based on the feedback signal in case the feedback signal exceeds a first threshold value or in case the feedback signal exceeds a second threshold value for at least a first amount of time and in case the feedback signal exceeds a third threshold value, wherein the third threshold value is larger than the second threshold value and the first threshold value is larger than the third threshold value.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: December 20, 2016
    Assignee: Infineon Technologies Austria AG
    Inventors: Marc Fahlenkamp, Josef Neulinger
  • Patent number: 9483626
    Abstract: A computing system includes a first security central processing unit (SCPU) of a system-on-a-chip (SOC), the first SCPU configured to execute functions of a first security level. The computing system also includes a second SCPU of the SOC coupled with the first SCPU and coupled with a host processor, the second SCPU configured to execute functions of a second security level less secure than the first security level, and the second SCPU executing functions not executed by the first SCPU.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 1, 2016
    Assignee: Broadcom Corporation
    Inventors: Stephane Rodgers, Andrew Dellow
  • Patent number: 9361488
    Abstract: A method for subcarrier downconversion and data detection according to one embodiment includes determining whether to use an upper sideband frequency section of a complex downconverter output, a lower sideband frequency section of the complex downconverter output, or both sideband frequency sections of the complex downconverter output; and processing the output corresponding to the selected sideband frequency section or sections based on the determination, wherein the processing includes correlation and data detection. Such methodology may also be implemented as a system using logic for performing the various operations. Additional systems and methods are also presented.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: June 7, 2016
    Assignee: Intelleflex Corporation
    Inventor: Dean Kawaguchi
  • Patent number: 9312940
    Abstract: To enable high-speed learning of an antenna directionality to be used for millimeter-wave communication, there is provided a communication device including a first radio communication unit capable of radio communication in accordance with a first communication method, and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, in which, upon receiving an instruction signal instructing to learn a beam directionality, the first radio communication unit determines a reception start time point of a beam reference signal based on the instruction signal, and the second radio communication unit starts reception of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: April 12, 2016
    Assignee: Sony Corporation
    Inventors: Hiroaki Takano, Yuichi Morioka, Takushi Kunihiro
  • Patent number: 9304740
    Abstract: Various methods and systems related to chaos-based pseudo-random number generation are presented. In one example, among others, a system includes a pseudo-random number generator (PRNG) to generate a series of digital outputs and a nonlinear post processing circuit to perform an exclusive OR (XOR) operation on a first portion of a current digital output of the PRNG and a permutated version of a corresponding first portion of a previous post processed output to generate a corresponding first portion of a current post processed output. In another example, a method includes receiving at least a first portion of a current output from a PRNG and performing an XOR operation on the first portion of the current PRNG output with a permutated version of a corresponding first portion of a previous post processed output to generate a corresponding first portion of a current post processed output.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 5, 2016
    Assignee: King Abdullah University of Science and Technology
    Inventors: Mohamed L. Barakat, Abhinav S. Mansingka, Ahmed Gomaa Ahmed Radwan, Khaled Nabil Salama
  • Patent number: 9276822
    Abstract: A method is disclosed for transmitting messages in a communications network with at least three communications nodes. At least one communications node always remains active and stores messages sent by a second communications node. If the second communications node switches to an idle state, the caching node is informed thereof by means of a sleep-event and takes over the sending of the messages for this node. By means of a wake-up event, the caching node obtains information that the second node has switched back into the active state and ceases sending the stored messages. Further nodes, which likewise can switch to the idle state at any time and possibly not receive messages sent by the second node during their own idle phase, thus do not notice anything about the idle state of the second node and operate on the assumption of an up-to-date status in the network at all times.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: March 1, 2016
    Assignee: CONTI TEMIC MICROELECTRONIC GMBH
    Inventor: Werner Messner
  • Patent number: 9246578
    Abstract: A method for allocating CDMA channels applicable to a mobile communication system that performs communication by using two or more CDMA channels, the method comprising: for each active sector corresponding to a particular mobile station, independently allocating CDMA channels (i.e., frequency assignments) such that each active sector is allocated at least one CDMA channel; and transmitting packet data by using the allocated CDMA channel.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: January 26, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Young-Jun Kim, Chan-Ho Kyung, Jong-Hoe An
  • Patent number: 9215119
    Abstract: Methods and UE apparatuses are provided for transmitting RSs. A method includes receiving a cell-specific sequence-hopping parameter; receiving a UE-specific sequence-hopping parameter; acquiring a first reference signal sequence for a PUSCH based on the UE-specific sequence-hopping parameter; acquiring a second reference signal sequence for a PUCCH based on the cell-specific sequence-hopping parameter; and transmitting at least one of a first reference signal and a second reference signal.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: December 15, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon Young Cho
  • Patent number: 9197283
    Abstract: A method and apparatus for sampling a high bandwidth analog signal includes: splitting the high bandwidth analog signal into N parallel channels; randomly demodulating each of the signals; sampling each demodulated signal using a sub-Nyquist sampling rate; combining each sampled signal into a sub-Nyquist signal; compressive sensing the combined sub-Nyquist signal to estimate missing samples of a full Nyquist rate uniform sample set X(n); convolving X(n) with N analysis filters, each analysis filter having a different coefficient; decimating output of each analysis filter using decimation ratios of M:1 to generate a sub-banded signal set Yi (n), i=1, . . . , N; processing the sub-banded signal set; up-sampling each processed sub-band signal by M; convolving each up-sampled sub-band signal with a corresponding synthesis filter; and combining two or more of the convolved signals to generate a non-uniform spectral partitioning of the high bandwidth analog signal.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: November 24, 2015
    Assignee: RAYTHEON COMPANY
    Inventors: Tuan V. Nguyen, Oleg Brovko, Alison Kim, Jing Z. Stafsudd
  • Patent number: 9197467
    Abstract: The presently disclosed subject matter is directed to methods and apparatus for providing a multi-protocol receiver for use in a radio frequency (RF) network. The receiver is designed to listen for multiple different packet preambles in parallel and, upon detection of a particular preamble, shift to demodulating the data portion of the packet using the single modulation technique associated with the particular preamble. Transmission of packets may be performed using a single radio frequency for all network devices or by frequency hopping techniques but using the same hopping pattern for all network devices. The receiver may be used with general communications networks or more specific applications, such as Smart Grid and AMI networks, and meshed networks of metrology devices.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: November 24, 2015
    Assignee: Itron, Inc.
    Inventor: Gilles Picard
  • Patent number: 9185003
    Abstract: Systems and methods are described for coordinating clocks in a distributed computing environment. In one embodiment, a plurality of groups of nodes are formed. Nodes within a group may be time-synchronized and time differences between groups may be tracked. Clock adjustments between groups may be accumulated for tracked activities. The accumulated clock adjustments may be used to determine an ordering of the tracked activities.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 10, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Nicholas Alexander Allen
  • Patent number: 9148197
    Abstract: Disclosed are various embodiments for optimizing a hopping sequence for a network. A network device generates sequences of channel numbers based at least in part upon a seed value. The network device concatenates the sequences into the hopping sequence, wherein each of the sequences is a segment of the hopping sequence. The network device adjusts the position of any adjacent repeating channel numbers within the hopping sequence to separate the channel numbers. The network device configures its network interface using the hopping sequence in order to communicate via the network.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: September 29, 2015
    Assignee: Landis+Gyr Innovations, Inc.
    Inventor: James Hartman
  • Patent number: 9112696
    Abstract: A radio communication apparatus includes a scheduling unit configured to determine a resource block based on an allocation pattern of resource blocks, where frames in which multiple resource blocks are arranged in a frequency direction are repeatedly formed in a time direction, the allocation pattern using a frame number as a variable. The radio communication apparatus also includes a transmitting unit configured to transmit a packet according to the resource block determined by the scheduling unit.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 18, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Nobuhiko Miki, Kenichi Higuchi, Mamoru Sawahashi
  • Patent number: 9031118
    Abstract: In one embodiment, a correlator of a global positioning system receiver in a global positioning system receives a sample satellite signal. The correlator includes a signal comparator configured to receive the sample signal, a first normalized estimate signal, and a second normalized estimate signal. The signal comparator generates a first accumulated output and a second accumulated output. The first accumulated output represents the integration of a correlation of the sample signal and the first normalized estimate signal. The second accumulated output represents the integration of a correlation of the sample signal and the second normalized estimate signal. Using time-multiplexing, the high speed of a digital signal processing core is leveraged to perform calculations of the signal comparator and threshold comparator in real time.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: May 12, 2015
    Assignee: Avidyne Corporation
    Inventors: Angelo Joseph, David McCoy
  • Patent number: 9031115
    Abstract: Methods for improving memory resource allocation at a base station of a wireless communications system, based on a virtual minimum spreading factor, may include computing a maximum traffic-to-pilot (T2P) power ratio for a UE, and sending a grant message to the UE specifying the maximum T2P power ratio. The base station may determine a largest minimum spreading factor (SF) for the UE based on the computed maximum T2P power ratio. The base station may allocate a memory buffer for storing minimum SF signal samples, receive one or more spread spectrum signals from the UE, and partially despread the received signals using the largest minimum SF, thereby preparing partially despread signal samples in the memory buffer. The base station may receive, from the UE, information about the actual SF used by the UE, and despread the partially despread signal samples stored in the memory buffer using the actual SF.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: May 12, 2015
    Assignee: QUALCOMM Incorporated
    Inventor: Yeon Kyoon Jeong
  • Patent number: 9020008
    Abstract: In one embodiment, each device in a frequency hopping communication network independently determines its own local unicast listening schedule, and discovers a neighbor unicast listening schedule for each of its neighbors. The devices also synchronize to a common broadcast schedule for the network that simultaneously overlays a configured portion of all unicast listening schedules in the network. Accordingly, the device operate in a receive mode according to their local unicast listening schedule and the common broadcast schedule during the overlaid configured portion, and in a transmit mode according to each neighbor unicast listening schedule and the common broadcast schedule during the overlaid configured portion depending upon a destination of transmitted traffic.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: April 28, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Jonathan W. Hui, Wei Hong, Lik Chuen Alec Woo
  • Patent number: 9008149
    Abstract: A method performs synchronous access between a first communication device and a second communication device. The first communication device adopts N frequency hopping channels and performs frequency hopping in a predetermined frequency hopping sequence and at a predetermined frequency hopping time interval. The first communication device sends a broadcast beacon over the N frequency hopping channels with a cycle of M times the predetermined frequency hopping time interval. The broadcast beacon carries general information including synchronization information. M and N are both natural numbers. The second communication device receives the broadcast beacon over any one frequency hopping channel of the N frequency hopping channels to acquire the synchronization information. The second communication device exchanges information with the first communication device for access.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: April 14, 2015
    Assignees: Siemens Medical Instruments Pte. Ltd., Siemens Ltd., China
    Inventors: Simon Huettinger, Mattias Lampe, Jie Zhang
  • Publication number: 20150071329
    Abstract: A wireless method and apparatus for late entry in frequency hopping systems that, during call setup, computes a random permutation sequence through a hop set of frequencies, chooses preamble frequencies to omit data thereon in lieu of preamble data, and swaps frequencies in the random permutation sequence such that synchronization frequencies lie next to the preamble frequencies with an expected delay such that late entrants can join. The wireless method and apparatus meets the FCC requirement of maintaining a pseudorandom hopping pattern and equal distribution of all frequencies in a hop set while guaranteeing late entry and having no effect on battery performance of radios.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 12, 2015
    Applicant: MOTOROLA SOLUTIONS, INC.
    Inventors: DUMINDA A. DEWASURENDRA, MARK A. BOERGER, MAHES M. EKANAYAKE, JOHN K. MCKINNEY
  • Patent number: 8964762
    Abstract: In one embodiment, a battery-operated communication device “quick-samples” a frequency hopping sequence at a periodic rate corresponding to a substantially low duty cycle, and is discovered by (e.g., attached to) a main-powered communication device. During a scheduled sample, the main-powered communication device transmits a control packet to be received by the battery-operated communication device, the control packet containing timing information and transmitted to account for worst-case clock drift error between the two devices. The battery-operated communication device responds to the control packet with a link-layer acknowledgment containing timing information from the battery-operated communication device. Accordingly, the two devices may re-synchronize their timing based on the timing information in the control packet and acknowledgment, respectively.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Jonathan W. Hui, Lik Chuen Alec Woo, Wei Hong
  • Patent number: 8964811
    Abstract: A method for identifying the presence of an electronic transmission comprising detecting, by a detecting device, the presence of a burst of electromagnetic energy that results from the presence of an original carrier signal and transmitting, by a transmitting device, a spread spectrum meta-carrier signal within a portion of a bandwidth of the original carrier signal, wherein the meta-carrier signal contains information about the original carrier signal and is transmitted such that the meta-carrier signal occupies at least a portion of a bandwidth of the original carrier signal during the presence of the burst of electromagnetic energy.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 24, 2015
    Assignee: Comtech EF Data Corp.
    Inventors: Michael Beeler, Cris M. Mamaril, Jeffery Harig
  • Patent number: 8948229
    Abstract: In one embodiment, a device in a channel hopping communication network independently maintains a slot counter, and computes a channel identification (ID) based on a function having inputs of i) a unique feature of the device, ii) a current slot of the slot counter, and iii) a set of possible channel IDs. Accordingly, the device configures its radio to receive on the computed channel ID for the respective current slot. In another embodiment, the device may determine, for a neighbor device, a current neighbor slot and unique neighbor feature, and correspondingly computes a neighbor channel ID based on the function using the unique neighbor feature, the current neighbor slot, and the set of possible channel IDs. As such, the device configures its radio to transmit on the computed neighbor channel ID for the respective current neighbor slot.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: February 3, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Jonathan W. Hui, Jean-Philippe Vasseur
  • Publication number: 20150023395
    Abstract: A wireless communication system in which a master device and a slave device each performing wireless communication by a frequency hopping system can operate in synchronism with each other. In the master device, a master microcomputer outputs a first sync signal to a RTC unit after a transmission timing signal is received and a carrier frequency is changed a predetermined number of times according to a first change timing signal. In the slave device, a slave microcomputer outputs a second sync signal to a RTC unit after a reception timing signal is received and a carrier frequency is changed the predetermined number of times according to a second change timing signal.
    Type: Application
    Filed: December 27, 2012
    Publication date: January 22, 2015
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kei Tohyama
  • Patent number: 8923417
    Abstract: Embodiments disclosed herein relate to apparatus and methods of transceiver power noise reduction. One embodiment relates to a method of serial data communication. At a transmitter, data may be encoded by a communication protocol encoder, and the protocol-encoded data may be serialized. The serialized data may be encoded for power-delivery-network noise reduction (PNR) so as to generate PNR-encoded serial data, and the PNR-encoded serial data may be driven onto a communication channel. Other embodiments, aspects, and features are also disclosed.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: December 30, 2014
    Assignee: Altera Corporation
    Inventors: Zhe Li, Hong Shi
  • Patent number: 8917757
    Abstract: A video processing device operates in an encoding mode when a mode selection signal has a first value and operates in a decoding mode when the mode selection signal has a second value. The encoding mode utilizes a plurality of function specific hardware engines that each perform a specific coding function and the decoding module utilizes at least one of the plurality of hardware engines.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: December 23, 2014
    Assignee: ViXS Systems, Inc.
    Inventors: Eric Young, Edward Hong
  • Patent number: 8908621
    Abstract: In one embodiment, each device in a frequency hopping communication network operates according to a common broadcast schedule for the network that simultaneously overlays a configured portion of all independently determined unicast listening schedules in the network, wherein the overlaid configured portion is based on broadcast schedule parameters consisting of a first time spent for broadcast transmissions in each broadcast period and a second time between broadcast periods. By monitoring network characteristics relating to unicast traffic and broadcast traffic in the network, updated broadcast schedule parameters may then be determined based on the network characteristics. Operation of the common broadcast schedule may thus be updated with the updated broadcast schedule parameters, accordingly.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: December 9, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Jean-Philippe Vasseur, Jonathan W. Hui
  • Patent number: 8873602
    Abstract: The present invention discloses a method and a device for transmitting sounding reference signal in a multi-antenna system, wherein the method includes acquiring antenna grouping information, and grouping antennas according to the antenna grouping information; and transmitting SRS on the respective antennas, wherein different antenna groups transmit the SRS in different frequency bands at a same moment. With the present invention, the interference with a base station of an adjacent cell in a certain frequency band is enabled to be reduced.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: October 28, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Mingyu Zhou, Sha Ma
  • Patent number: 8867650
    Abstract: An apparatus and method for cross clock domain interference cancellation is provided to a communication system which includes a transmitter operated in a first clock domain and a receiver operated in a second clock domain. The apparatus comprises a First-In-First-Out (FIFO) circuit and a cancellation signal generator. The FIFO circuit receives a digital transmission signal of the transmitter in the first clock domain, and outputs the digital transmission signal in the second clock domain according to an accumulated timing difference between the first and second clock domains. The cancellation signal generator generates a cancellation signal for canceling an interference signal received by the receiver according to the digital transmission signal outputted by the FIFO circuit. The interference signal is generated in response to the digital transmission signal.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: October 21, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventors: Liang-Wei Huang, Shieh-Hsing Kuo, Chi-Shun Weng, Chun-Hung Liu
  • Patent number: 8848761
    Abstract: Methods and User Equipment (UE) apparatuses are provided for transmitting Reference Signals (RSs). A method includes receiving a cell-specific sequence-hopping parameter; receiving a UE-specific sequence-hopping parameter; determining a reference signal sequence based on the UE-specific sequence-hopping parameter; and transmitting the reference signal based on the determined reference signal sequence. Sequence hopping does not apply to the reference signal sequence if the cell-specific sequence-hopping parameter indicates that the sequence hopping is enabled and the UE-specific sequence-hopping parameter indicates that the sequence hopping is disabled.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: September 30, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Aris Papasakellariou, Joon Young Cho
  • Publication number: 20140269842
    Abstract: Systems, methods, and devices of the various embodiments provide modified frequency hopping patterns that enable synchronization of a wireless tracking device with a beacon signal that defines a predetermined area (i.e., beacon fence). In an embodiment, a beacon may transmit a beacon signal according to a modified frequency hopping pattern and a wireless tracking device may receive the beacon signal by tuning a receiver according to the frequency hopping pattern. In an embodiment, the modified frequency hopping pattern may include a reference frequency generated at a high redundancy pattern multiplexed with a pseudo random sequence of frequencies. In an embodiment, the packets of the beacon signal transmitted at the reference frequency may include an indication of the next frequency according to the modified frequency hopping pattern.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: QUALCOMM INCORPORATED
    Inventors: Catalin LACATUS, Hemish K. PARIKH, Harleen K. GILL
  • Patent number: 8837557
    Abstract: Techniques for use in sampling a signal of a receiver are described. In a sampling determination mode, a signal is sampled at a first sampling period for producing a sample set for each phase of the sampled signal. For each sample set, a correlation process is performed for producing a correlation result. One of the phases associated with an optimal correlation result is identified from the correlation results. In a communication mode, a received signal is sampled at a second sampling period at the phase associated with the optimal correlation result, for recovering user or signaling information from the received signal. The second sampling period is less than the first sampling period.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: September 16, 2014
    Assignee: BlackBerry Limited
    Inventor: Xin Jin
  • Patent number: 8831066
    Abstract: A method of generating a pair of orthogonal sets with a spreading factor N for a direct sequence spread spectrum communication system, includes selecting a two-level autocorrelation sequence of a period of N?1, the two-level autocorrelation sequence including elements, each of which includes a value of 1 or 0, and obtaining binary sequences based on the two-level autocorrelation sequence. The method further includes obtaining quasi-orthogonal sets based on the two-level autocorrelation sequence and the binary sequences, and generating the pair of the orthogonal sets based on the quasi-orthogonal sets.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: September 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sujit Jos, Jinesh P. Nair
  • Patent number: 8831064
    Abstract: A method of generating a spread spectrum clock signal in an integrated circuit, the method comprising providing a programmable digital clock generator in programmable logic of the integrated circuit, coupling a user-programmable control signal to the programmable clock generator to control the frequency deviation of the spread spectrum clock signal, and generating the spread spectrum clock signal in response to the user-programmable control signal.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: September 9, 2014
    Assignee: Xilinx, Inc.
    Inventor: Alireza S. Kaviani
  • Publication number: 20140219319
    Abstract: A signal processing method, a connector and a memory storage device are provided. The signal processing method is for the connector which does not include a crystal oscillator. The signal processing method includes: receiving a first signal stream from a host system; tracking a transmission frequency of the first signal stream, and obtaining a frequency shift quantity of the first signal stream relative to the transmission frequency; determining if a spread spectrum operation is performed on the first signal stream according to the frequency shift quantity to generate a determination result; generating a second signal stream according to the determination result and the transmission frequency. Accordingly, the spread spectrum operation is handled under the situation without a crystal oscillator.
    Type: Application
    Filed: April 16, 2013
    Publication date: August 7, 2014
    Applicant: Phison Electronics Corp.
    Inventors: An-Chung Chen, Chih-Ming Chen
  • Patent number: 8798125
    Abstract: The present invention includes a method of determining a phase estimate for an input signal having pilot symbols. The method includes receiving a plurality of pilot symbols, and then multiplying two or more pilot symbol slots by corresponding correlator coefficients to correct a phase estimate of the input signal.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: August 5, 2014
    Assignee: Broadcom Corporation
    Inventors: Tommy Yu, Amy Gayle Hundhausen
  • Patent number: RE46975
    Abstract: A method, an apparatus, and a computer program that includes forming frequency hopping position of the sounding reference signal is based on a hopping pattern. The hopping pattern of the sounding reference signal is configured to utilize a tree assignment for a frequency allocation of the sounding reference signal and to support at least one frequency band branch per layer. The hopping pattern of the sounding reference signal is also configured to provide consecutive sounding reference signals on widely separated frequency allocations.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: July 31, 2018
    Assignee: CELLULAR COMMUNICATIONS EQUIPMENT LLC
    Inventors: Kari Hooli, Kari Pajukoski, Esa Tiirola