Patents Assigned to Her Majesty The Queen In Right of Canada as represented by
The Minister of Industry through the Communications Research
Centre
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Patent number: 10797108Abstract: An electronic component such as a voltage controllable reconfigurable capacitor or transistor is formed by printing one or more layers of ink on a non-conductive substrate. Ferroelectric ink or semi-conductive ink is printed and conductive resistive or dielectric ink is printed on a s same or different layers. Reconfigurability is achieved by printing resistive biasing circuitry wherein when a changing voltage is applied to the biasing circuitry, an electronic property of the electronic component changes in response to the changing voltage.Type: GrantFiled: April 26, 2018Date of Patent: October 6, 2020Assignee: Her Majesty the Queen in the Right of Canada, as represented by the Minister of Industry, through the Communication Research Centre CanadaInventors: Khelifa Hettak, Jafar Shaker, Aldo Petosa, Jonathan Ethier, Reza Chaharmir, Ming Li, Nicolas Gagnon
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Patent number: 10771208Abstract: A primary transmitter of a multicast communication system transmits in-band backhaul to a relay transmitter using an LDM signal that also carries services to end-users. The relay transmitter processes received wireless signal to extract the in-band backhaul and re-transmits services obtained from the in-band backhaul in same or different frequency channel. The in-band backhaul may be transmitted in a high-capacity layer of the LDM signal carrying or in a separate timeslot. Transmitter-specific signature signals may be used for loopback and forward channel estimation at the relay transmitter. The in-band backhaul may also carry service data for devices in a different network.Type: GrantFiled: January 11, 2019Date of Patent: September 8, 2020Assignee: Her Majesty the Queen in the Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Yiyan Wu, Liang Zhang, Wei Li, Khalil Salehian, Sébastien Laflèche
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Patent number: 9762467Abstract: Technologies are generally described for clusterhead selection in a communication network. In an example, a first node may be configured to send a first responsibility and availability. In some examples, the first responsibility indicates a responsibility attributed to the second node to be the clusterhead for the first node. In some examples, the first availability indicates an availability of the first node to be the clusterhead for the second node. In some examples, the first node is effective to receive a second responsibility and availability; the second responsibility indicating a responsibility attributed to the first node to be the clusterhead for a second node; the second availability indicating an availability of the second node to be the clusterhead for the first node. In some examples, the first node is effective to determine the clusterhead based on the first and second responsibility and the first and second availability.Type: GrantFiled: February 24, 2016Date of Patent: September 12, 2017Assignee: Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry Through The Communications Research Centre CanadaInventors: Patricia Janet Willink, Kareem Emile Baddour, Oktay Ureten
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Patent number: 9479826Abstract: A system has a first transmitter for transmitting a first wireless signal within a first frequency. A second transmitter is for transmitting a second wireless signal with overlapping frequency. The first transmitter and the second transmitter are disposed sufficiently proximate to another such that the wireless signals substantially interfere resulting in a combined wireless signal with negative SNR for each of the first wireless signal and the second wireless signal, the negative SNR being a result of at least the other of the first wireless signal and the second wireless signal. A receiver is located for receiving a received wireless signal comprising substantially interfering encoded data signals having negative SNR. The receiver is for selecting from the substantially interfering encoded data signals a signal of interest and for decoding said signal of interest relative to at least the other substantially interfering data signal within the received wireless signal.Type: GrantFiled: April 5, 2012Date of Patent: October 25, 2016Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of industry, through the Communications Research Centre CanadaInventors: Yiyan Wu, Bo Rong, Gilles Gagnon, Khalil Salehian, Sébastien Laflèche, Charles Nadeau, Benoit Ledoux, Robert Gagnon, Douglas Prendergast
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Patent number: 9288126Abstract: Technologies are generally described for clusterhead selection in a communication network. In an example, a first node may be configured to send a first responsibility and availability. In some examples, the first responsibility indicates a responsibility attributed to the second node to be the clusterhead for the first node. In some examples, the first availability indicates an availability of the first node to be the clusterhead for the second node. In some examples, the first node is effective to receive a second responsibility and availability; the second responsibility indicating a responsibility attributed to the first node to be the clusterhead for a second node; the second availability indicating an availability of the second node to be the clusterhead for the first node. In some examples, the first node is effective to determine the clusterhead based on the first and second responsibility and the first and second availability.Type: GrantFiled: July 28, 2010Date of Patent: March 15, 2016Assignee: Her Majesty The Queen in Right of Canada As Represented By The Minister of Industry, Through The Communications Research Centre CanadaInventors: Patricia Janet Willink, Kareem Emile Baddour, Oktay Ureten
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Patent number: 8982192Abstract: Three-dimensional visual information may be displayed on curvilinear display surfaces. The display devices can include a control system configured to execute various methods for obtaining the visual information and displaying the visual information on the curvilinear display surface. If the visual information is intended for display on a first display surface, the control system can modify the visual information for display on the curvilinear display surface. The control system also can modify the visual information based upon relative positions and orientations of a viewer, projector, and/or the display surface, as well as to correct for anticipated environmental or optical interference. The control system outputs the visual information or modified visual information to a display device for display on a curvilinear display surface.Type: GrantFiled: April 7, 2011Date of Patent: March 17, 2015Assignee: Her Majesty the Queen in right of Canada as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Wa James Tam, Carlos Alberto Vázquez Hidalgo-Gato
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Patent number: 8923225Abstract: The invention relates to a cognitive radio (CR) WiFi network which includes a plurality of radio environment aware WiFi terminals, which collect local WiFi interference information and send this information to a CR network management system (NMS). The CR NMS includes a database for storing historical records of the interference information obtained from the terminals, and cognitive engines for analyzing the stored historical interference records and determining terminal-specific transmission and reception parameters. In one embodiment the network implements a deterministic NMS-directed networks-wide TDD/TDM scheduling of WiFi communications for optimal channel re-use and interference avoidance, and a novel terminal synchronization mechanism.Type: GrantFiled: April 5, 2012Date of Patent: December 30, 2014Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: John Sydor, David Roberts, Bernard Doray, Siva Palaninathan, Wayne Brett, Mustapha Bennai
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Patent number: 8866558Abstract: A standing wave oscillator includes a cross-coupled differential transistor pair having a pair of input terminals and a pair of output terminals; and a resonant circuit coupled to the input terminals of the cross-coupled differential transistor pair. The resonant circuit includes: a capacitance between the input terminals of the cross-coupled differential transistor pair; and a differential dual-mode coplanar waveguide (CPW) having opposite differential ends thereof connected to respective input terminals of the cross-coupled differential transistor pair. CPW ground lines of the differential dual-mode coplanar waveguide each have a first end thereof connected to the first supply voltage and have a second end thereof floating or unterminated.Type: GrantFiled: April 17, 2012Date of Patent: October 21, 2014Assignee: Her Majesty the Queen in Right of Canada, as Represented by the Minister of Industry, Through the Communications Research Centre CanadaInventors: Ming Li, Khelifa Hettak, Rony E. Amaya, Adrian Momciu, Luc A. Desormeaux, Valek Szwarc
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Patent number: 8824543Abstract: The invention relates to a method of iterative multi-layer decoding of a multimedia communication signal, wherein persistent bits from various upper layers of the employed protocol stack are used in error correction decoding at a lower error-correction layer. The method includes saving persistent bits from successfully decoded FEC frames in memory, and using a subset of the saved bits in decoding of future frames. A smart controller is used to analyze frames for the presence and location of persistent bits, for saving thereof in memory, and for inserting saved persistent bits into a next frame at successive decoding iterations thereof.Type: GrantFiled: June 17, 2011Date of Patent: September 2, 2014Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Yiyan Wu, Bo Rong, Gilles Gagnon, Sébastien Laflèche, Charles Nadeau, Omneya Issa, Hong Liu, Wei Li
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Patent number: 8768121Abstract: A filter and a method of filtering a high frequency electrical signal using photonic components is disclosed. The filter has a serially fiber-coupled laser source, a modulator, a filter, and a photodetector. The electrical signal is applied to the modulator. The modulated light propagates through the filter which is constructed to pass not only a modulated sideband, but also at least a fraction of light at the carrier frequency of the laser. The photodetector detects a signal at the beat frequency between the carrier and sideband signals, after both signals have propagated through the filter. As a result, a separate optical branch for light at the carrier frequency is not required, which considerably simplifies the filter construction and makes it more stable and reliable.Type: GrantFiled: March 8, 2010Date of Patent: July 1, 2014Assignee: Her Majesty the Queen in Right of Canada, as Represented by the Minister of Industry, Through the Communications Research Centre CanadaInventors: Howard Rideout, Joe Seregelyi, Ping Lu, Stéphane Paquet, Jianping Yao, Stephen J. Mihailov, John Oldham, Mario Caron
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Patent number: 8743000Abstract: A thin electromagnetic phase shifting element, named phase and amplitude shifting surface (PASS), is disclosed. The PASS is capable of independently altering both the phase and the amplitude distribution of the electromagnetic fields propagating through the structure. The element comprises a few patterned metallic layers separated by dielectric layers. The patterns of the metallic layers are tuned to locally alter the phase and/or the amplitude of an incoming electromagnetic wave to a prescribed set of desired values for the outgoing electromagnetic wave. The PASS can be applied to design components such as gratings, lenses, holograms, and various types of antennas in the microwave, millimeter wave and sub-millimeter wave.Type: GrantFiled: July 28, 2010Date of Patent: June 3, 2014Assignee: Her Majesty the Queen in Right of Canada, as Represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Nicolas Gagnon, Aldo Petosa, Derek A. McNamara
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Patent number: 8711015Abstract: The invention relates to compressing of sparse data sets contains sequences of data values and position information therefor. The position information may be in the form of position indices defining active positions of the data values in a sparse vector of length N. The position information is encoded into the data values by adjusting one or more of the data values within a pre-defined tolerance range, so that a pre-defined mapping function of the data values and their positions is close to a target value. In one embodiment, the mapping function is defined using a sub-set of N filler values which elements are used to fill empty positions in the input sparse data vector. At the decoder, the correct data positions are identified by searching though possible sub-sets of filler values.Type: GrantFiled: August 24, 2011Date of Patent: April 29, 2014Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Frederic Mustiere, Hossein Najaf-Zadeh, Ramin Pishehvar, Hassan Lahdili, Louis Thibault, Martin Bouchard
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Patent number: 8711038Abstract: The invention relates to methods and systems for accurate ranging and geo-locationing using coherent multicarrier (CM) signals and based on a high-resolution estimation of a receiver timing offset in a signal receiver that receives ranging CM signals. A transmitter transmits a ranging CM signal having a known subcarrier modulation pattern. The receiver samples the ranging CM signal it receives reflected back from an object or from the remote transmitter, and processes the sampled signal that preserves relative subcarrier phases using a high-resolution model channel response function to determine the receiver timing offset with resolution much better than the receiver sampling period. The receiver timing offset is used to determine a flight time for the ranging CM signal with high accuracy.Type: GrantFiled: February 3, 2011Date of Patent: April 29, 2014Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Ivan Reede, Gerald Chouinard
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Patent number: 8670075Abstract: Methods of image interpolation disclosed herein include a method of irregular-grid expanded-block weighted motion compensation (IEWMC) and a method of block-wise directional hole interpolation (BDHI). The IEWMC can be used with unidirectional motion or disparity trajectories. The IEWMC can be applied in both forward and backward directions, and the interpolated images resulting from IEWMC application can be superimposed, or averaged, to reduce the blocking artifacts and handle the holes and overlaps. The BDHI takes into account the orientation of local edges and textures when filling the holes, which results in a sharper interpolated image.Type: GrantFiled: September 23, 2010Date of Patent: March 11, 2014Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Demin Wang, Andre Vincent, Philip Blanchfield, Robert Klepko
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Patent number: 8532215Abstract: The invention relates to a method and circuit for linearizing amplifiers and other nonlinear circuits for multi-carrier signals. An output signal from the amplifier is sampled, and a correlation matrix of size N×N is computed from the sampled signal, wherein N exceeds the number of multiplexed carriers in the signal. A signal-to-distortion ratio (SDR) is then estimated based on a ratio of one or more largest to one or more smallest eigenvalues of the correlation matrix, and the signal into the amplifier is pre-distorted so as to maximize the SDR.Type: GrantFiled: September 13, 2010Date of Patent: September 10, 2013Assignee: Her Majesty the Queen in Right of Canada, as Represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Xinping Huang, Zhiwen Zhu, Mario Caron
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Patent number: 8488868Abstract: The invention relates to a method and an apparatus for generating a depth map from a digital monoscopic color image. The method includes the following general steps: a) obtaining a first color component of the MCI, said first color component corresponding to partial color information of the MCI; and, b) assigning depth values to pixels of the MCI based on values of the first color component of respective pixels for forming the depth map for the MCI. In one embodiment, the depth values are generated by adjusting and/or scaling of pixel values of the Cr chroma component of the monoscopic source color image in the Y?CbCr color system.Type: GrantFiled: April 2, 2008Date of Patent: July 16, 2013Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Wa James Tam, Carlos Vázquez
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Patent number: 8411966Abstract: The invention relates to a method for estimating an image relation model for two or more related images based on a plurality of point correspondences. The method includes using a weighted random sampling algorithm to repeatedly draw subsets of point correspondences for generating model estimates, evaluating said model estimates for the full plurality of the point correspondences, and updating weights associated with each of the point correspondences in the random sampling algorithm based on information obtained in said evaluating.Type: GrantFiled: December 8, 2009Date of Patent: April 2, 2013Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Liang Zhang, Demin Wang, Houman Rastgar, André Vincent
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Patent number: 8402789Abstract: A method of producing a thermally stable grating allows the grating to be placed in environments where temperatures reach 1000° C. These gratings may be concatenated so as to form a sensor array. The method requires a step of lowering the characteristic intensity threshold of a waveguide by at least 25%, followed by irradiating the waveguide with femtosecond pulses of light having a sufficient intensity and for a sufficient duration to write the grating so that at least 60% of the grating remains after exposures of at least 10 hours at a temperature of at least 1000° C. Pre-writing a Type I grating before writing a minimal damage Type II grating lowers the characteristic threshold of the waveguide so that a stable low damage type II grating can be written; alternatively providing a hydrogen or deuterium loaded waveguide before writing the grating lowers the characteristic threshold of the waveguide.Type: GrantFiled: August 23, 2012Date of Patent: March 26, 2013Assignee: Her Majesty the Queen in Right of Canada, as Represented by the Minister of Industry, Through the Communications Research Centre CanadaInventors: Christopher W. Smelser, Stephen J. Mihailov, Dan Grobnic, Ping Lu, Robert B. Walker, Gino Cuglietta, Huimin Ding, Xiaoli Dai
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Patent number: 8300675Abstract: The invention relates to a method and apparatus for acquiring a complex spreading code of a direct sequence spread spectrum signal (DSSS) by acquiring a state of a spreading code generator capable of generating the complex spreading code. A sequence of bipolar differential product values, which sign is independent on data transmitted by the DSSS signal, is obtained by combining in-phase and quadrature samples of the DSSS signal for adjacent chip intervals. This sequence is provided to a linear block decoder for obtaining a codeword of a linear block code, which is defined by a structure of the spreading generator and the differential product operation. The codeword is used to compute the state of the spreading code generator.Type: GrantFiled: May 13, 2010Date of Patent: October 30, 2012Assignee: Her Majesty the Queen in Right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Ron Kerr, Paul Guinand, John Lodge
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Patent number: 8272236Abstract: A method of producing a thermally stable grating allows the grating to be placed in environments where temperatures reach 1000° C. and where the grating is relatively stable and has very low loss from scatter. These gratings have spectral characteristics that allow them to be concatenated so as to form a sensor array. The method requires a step of lowering the characteristic intensity threshold of a waveguide by at least 25%, followed by irradiating the waveguide with femtosecond pulses of light having a sufficient intensity and for a sufficient duration to write the grating so that at least 60% of the grating remains after exposures of at least 10 hours at a temperature of at least 1000° C.Type: GrantFiled: June 18, 2009Date of Patent: September 25, 2012Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Industry, through the Communications Research Centre CanadaInventors: Christopher W. Smelser, Stephen J. Mihailov, Dan Grobnic, Ping Lu, Robert B. Walker, Gino Cuglietta, Haimin Ding, Xiaoli Dai