Patents by Inventor Bjorn Lindquist

Bjorn Lindquist has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230075165
    Abstract: A method (100) for creating a model for positioning, the method (100) comprising: receiving (S150) a training dataset (1) comprising samples (10) of an estimation labeled type, each sample (10) of the estimation labeled type being associated with a measurement position, each sample (10) of the estimation labeled type comprising sensor data (12), measured at the measurement position associated with the sample (10), the sensor data (12) being characteristic of the measurement position associated with the sample (10); an estimated measurement position (14), being an estimate of the measurement position associated with the sample (10); an estimated accuracy (16), being an estimate of an accuracy of the estimated measurement position (14); training (S160) a machine learning model (20) to convert sensor data (12) to a position, wherein the training is based on the samples (10) of the estimation labeled type in the training dataset (1), whereby the model for positioning is created.
    Type: Application
    Filed: August 29, 2022
    Publication date: March 9, 2023
    Applicant: Combain Mobile AB
    Inventors: Björn Lindquist, Karl Åström, Christoffer Kjellson
  • Patent number: 10955518
    Abstract: A method for generating an indoor environment model of a building. The method comprises forming a transmitter location model for defining positions of transmitters in said building using gathered information for establishing transmitter locations. The method further comprises receiving signal strength indicative measurements determined for a number of transmitters using at least one electronic communications device wherein the signal strength indicative measurements are based on a signal which has varying signal propagation characteristics in the indoor environment The signal strength indicative measurements are acquired from a number of known locations in the building, identifying discrepancies of signal transmittance in said indoor environment based on said signal strength indicative measurements in relation to said transmitter location model.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: March 23, 2021
    Assignee: Combain Mobile AB
    Inventors: Björn Lindquist, Anders Mannesson, Karl Åström
  • Patent number: 10547964
    Abstract: A method for estimating accuracy of a position determination based on distance-dependent measurements is disclosed. The method comprises: storing area information in relation to pre-defined geographical areas, wherein the area information for each pre-defined geographical area includes accuracy information relating to accuracy of position determinations based on distance-dependent measurements in the pre-defined geographical area; receiving a request for an accuracy estimate; determining an area affiliation based on received position information in said request, wherein the area affiliation defines at least one applicable geographical area among the pre-defined geographical areas, wherein the position of the receiving unit is located within the at least one applicable geographical area; and determining the accuracy estimate based on the stored area information for the at least one applicable geographical area.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 28, 2020
    Assignee: COMBAIN MOBILE AB
    Inventors: Björn Lindquist, Rikard Windh
  • Publication number: 20200018812
    Abstract: A method for generating an indoor environment model of a building comprises forming a transmitter location model for defining positions of transmitters in said building using gathered information for establishing transmitter locations (302), receiving signal strength indicative measurements being determined for a number of transmitters using at least one electronic communications device (304), wherein the signal strength indicative measurements are based on a signal which has varying signal propagation characteristics in the indoor environment, and wherein said signal strength indicative measurements are acquired from a number of known locations in the building, identifying discrepancies of signal transmittance in said indoor environment based on said signal strength indicative measurements in relation to said transmitter location model (306), determining locations of signal hindering elements causing said discrepancies (308), and generating said indoor environment model including transmitter locations and sa
    Type: Application
    Filed: January 11, 2018
    Publication date: January 16, 2020
    Inventors: Björn Lindquist, Anders Mannesson, Karl Åström
  • Publication number: 20170295463
    Abstract: A method for estimating accuracy of a position determination based on distance-dependent measurements is disclosed. The method comprises: storing area information in relation to pre-defined geographical areas, wherein the area information for each pre-defined geographical area includes accuracy information relating to accuracy of position determinations based on distance-dependent measurements in the pre-defined geographical area; receiving a request for an accuracy estimate; determining an area affiliation based on received position information in said request, wherein the area affiliation defines at least one applicable geographical area among the pre-defined geographical areas, wherein the position of the receiving unit is located within the at least one applicable geographical area; and determining the accuracy estimate based on the stored area information for the at least one applicable geographical area.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 12, 2017
    Inventors: Björn LINDQUIST, Rikard WINDH
  • Patent number: 8806021
    Abstract: Methods, portable electronic devices, systems and computer program products are provided for automatically creating a social networking service (SNS) session. The methods include generating at and transmitting from a first device a first audio and/or video fingerprint of an audio and/or video event. The first audio and/or video fingerprint has a first predetermined length (T). A second audio and/or video fingerprint is periodically transmitted to a server from the first device. The second audio and/or video fingerprint has a second predetermined length (t), smaller than the first predetermined length (T), and includes data associated with the audio and/or video event that is later in time than data included in the first audio and/or video fingerprint.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: August 12, 2014
    Assignees: Sony Corporation, Sony Mobile Communications AB
    Inventors: Bo Larsson, Henrik Bengtsson, Bjorn Lindquist, Markus Andreasson, Per Astrand, Olivier Moliner
  • Patent number: 8467804
    Abstract: A method for determining location of a mobile terminal includes repetitively switching power-on and power-off to a GPS receiver circuit which determines location of the mobile terminal using GPS signals. The power-on to power-off duty cycle of the GPS receiver circuit is regulated in response to distance that the mobile terminal has moved from a previously determined location. The power-on to power-off duty cycle can be regulated in response to identifying GPS isolation, in response to an acceleration-determined distance from previous GPS-determine location, an acceleration-determined velocity of the mobile terminal, availability of position assistance information from a cellular system, presence/absence of signals from a WLAN/Bluetooth device, and/or detection of a new cellular base station ID.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: June 18, 2013
    Assignees: Sony Corporation, Sony Mobile Communications AB
    Inventor: Björn Lindquist
  • Patent number: 8040219
    Abstract: To enhance in-building location determination of an electronic device, described is a system and a method that uses a blip access point to transfer location assistance information to the electronic device. The location assistance information may contain a map of dummy beacons that serve as reference points (e.g., landmarks) from which the electronic device may determine its location relative to the map information.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: October 18, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Jacobus Haartsen, William O. Camp, Jr., Bjorn Lindquist
  • Publication number: 20100109864
    Abstract: To enhance in-building location determination of an electronic device, described is a system and a method that uses a blip access point to transfer location assistance information to the electronic device. The location assistance information may contain a map of dummy beacons that serve as reference points (e.g., landmarks) from which the electronic device may determine its location relative to the map information.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventors: Jacobus Haartsen, William O. Camp, JR., Bjorn Lindquist
  • Publication number: 20090193124
    Abstract: Methods, portable electronic devices, systems and computer program products are provided for automatically creating a social networking service (SNS) session. The methods include generating at and transmitting from a first device a first audio and/or video fingerprint of an audio and/or video event. The first audio and/or video fingerprint has a first predetermined length (T). A second audio and/or video fingerprint is periodically transmitted to a server from the first device. The second audio and/or video fingerprint has a second predetermined length (t), smaller than the first predetermined length (T), and includes data associated with the audio and/or video event that is later in time than data included in the first audio and/or video fingerprint.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 30, 2009
    Inventors: Bo Larsson, Henrik Bengtsson, Bjorn Lindquist, Markus Andreasson, Per Astrand, Olivier Moliner
  • Publication number: 20090098880
    Abstract: A method for determining location of a mobile terminal includes repetitively switching power-on and power-off to a GPS receiver circuit which determines location of the mobile terminal using GPS signals. The power-on to power-off duty cycle of the GPS receiver circuit is regulated in response to distance that the mobile terminal has moved from a previously determined location. The power-on to power-off duty cycle can be regulated in response to identifying GPS isolation, in response to an acceleration-determined distance from previous GPS-determine location, an acceleration-determined velocity of the mobile terminal, availability of position assistance information from a cellular system, presence/absence of signals from a WLAN/Bluetooth device, and/or detection of a new cellular base station ID.
    Type: Application
    Filed: October 16, 2007
    Publication date: April 16, 2009
    Inventor: Bjorn Lindquist
  • Patent number: 6904104
    Abstract: A receiver section recovers the in-phase and quadrature components of a linear modulated data signal. The in-phase signal is sampled and quantized producing an in-phase sample stream, and the quadrature phase signal is sampled and quantized producing a quadrature sample stream. The in-phase sample stream and the quadrature sample stream are both over-sampled at a rate of N times a symbol rate of the data signal. A decimation section filters the quantized in-phase sample stream and the quantized quadrature sample stream to produce a reduced in-phase sample stream and a reduced quadrature sample stream at a rate of M times the symbol rate, wherein M is less than or equal to N.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: June 7, 2005
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Anders Khullar, Björn Lindquist
  • Patent number: 6473471
    Abstract: A method for processing a signal modulated with information symbols to account for an additive offset and slope is disclosed. First, an initial estimate of offset and slope is made and hypotheses of all possible values of a sequence of one or more information symbols are then made. For each of said hypotheses, the associated data symbol sequence is used to make an improved estimate of offset and slope and the improved estimate of offset and slope are stored against each of the hypotheses. For each hypothesis, the improved estimate of offset and slope is used in calculating an expected signal value and a mismatch between a sample of the modulated signal and the expected value is computed.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: October 29, 2002
    Assignee: Ericsson Inc
    Inventors: Björn Lindquist, Paul W. Dent
  • Publication number: 20020151287
    Abstract: A radio receiver has a front-end circuit that generates a radio frequency (RF) signal. The front-end circuit includes a first tunable band-pass filter that is capable of tunably selecting channels within at least one frequency band. To tune the first tunable band-pass filter, the receiver further includes a local oscillator circuit for generating a local oscillating signal, and a second tunable filter coupled to receive a signal derived from the local oscillating signal and to generate therefrom a filtered local oscillating signal. A control unit in the receiver is coupled to receive a signal derived from the filtered local oscillating signal. The control unit generates a control signal based on the signal derived from the filtered local oscillating signal. The control signal is supplied to the first tunable band-pass filter and to the second tunable filter for tuning the first tunable band-pass filter and the second tunable filter.
    Type: Application
    Filed: April 17, 2001
    Publication date: October 17, 2002
    Inventors: Bjorn Lindquist, Martin Isberg
  • Patent number: 6466767
    Abstract: A test transmitter for verifying the positioning of antennas in a mobile telecommunications system and a method for manufacturing such a test transmitter that is particularly suited for indoor use are presented. A mobile terminal is modified so that it can transmit in the downlink frequency band, and preferably so that it can transmit one or more of the signal types used for downlink signalling in the mobile telecommunications system.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: October 15, 2002
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefan Lidbrink, Kenneth Schönfeldt, Björn Lindquist, Kar-Fat Poon, Kenneth Ekman, Niclas Ögren
  • Publication number: 20020071506
    Abstract: A method for processing a signal modulated with information symbols to account for an additive offset and slope is disclosed. First, an initial estimate of offset and slope is made and hypotheses of all possible values of a sequence of one or more information symbols are then made. For each of said hypotheses, the associated data symbol sequence is used to make an improved estimate of offset and slope and the improved estimate of offset and slope are stored against each of the hypotheses. For each hypothesis, the improved estimate of offset and slope is used in calculating an expected signal value and a mismatch between a sample of the modulated signal and the expected value is computed.
    Type: Application
    Filed: August 13, 1996
    Publication date: June 13, 2002
    Inventors: BJORN LINDQUIST, PAUL W. DENT
  • Patent number: 6373909
    Abstract: A communications terminal having a receiver and a method therefor is provided that substantially removes a known interferer from a digitally translated intermediate frequency signal. More specifically, the receiver includes an antenna for receiving a signal, and at least one combination of a mixer and filter for translating in the analog domain the signal to the intermediate frequency signal while maintaining separation from baseband. The receiver also includes a digitizer for digitally translating the intermediate frequency signal containing the known interferer from the analog domain into the digital domain, and an interference cancellation system for removing the known interferer from the digitally translated intermediate frequency signal by utilizing either a DC offset compensator or a correlator compensator.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: April 16, 2002
    Assignee: Telefonaktiebolaget LM Ericsson (PUBL)
    Inventors: Björn Lindquist, Jan Celander, Sven Mattisson
  • Publication number: 20010040932
    Abstract: A communications terminal having a receiver and a method is provided that substantially removes a known interferer from a digitally translated intermediate frequency signal. More specifically, the receiver includes an antenna for receiving a signal, and at least one combination of a mixer and filter for translating in the analog domain the signal to the intermediate frequency signal while maintaining separation from baseband. The receiver also includes a digitizer for digitally translating the intermediate frequency signal containing the known interferer from the analog domain into the digital domain, and an interference cancellation system for removing the known interferer from the digitally translated intermediate frequency signal by utilizing either a DC offset compensator or a correlator compensator.
    Type: Application
    Filed: October 22, 1999
    Publication date: November 15, 2001
    Inventors: BJORN LINDQUIST, JAN CELANDER, SVEN MATTISSON
  • Patent number: 6198355
    Abstract: There is disclosed a phase detector which triggers on both rising and falling edges of an input pulse signal. This effectively doubles the frequency of the input signal. When the phase detector is used in a phase locked loop, the doubled frequency means that a lower division ratio can be used, thereby reducing any noise contribution introduced thereby.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: March 6, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Björn Lindquist, Magnus Nilsson
  • Patent number: 6091963
    Abstract: The present invention relates to a receiver device comprising a receiver (104) adapted to receive radio signals in two frequency bands (FB1, FB2). The radio signals in one of the frequency bands (FB1) constitute communication signals for a radio system (AMPS, NMT) having a certain channel spacing, whereas the radio signals of the second frequency band (FB2) constitutes communication signals for a second radio system (PCS1900, DCS1800, GSM) having a second certain channel spacing. The receiver (104) comprises two inputs (108, 11) each intended for a radio system having different frequency bands and channel spacing. For radio signals occurring on one input (108), mixing is performed from the RF range directly to the baseband frequency range. For radio signals occurring on the second input (108) the mixing from the radio frequency range to the baseband frequency range is carried out through an intermediate frequency range.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: July 18, 2000
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Jacob Mannerstr.ang.le, Martin Isberg, Bjorn Lindquist, Torsten Carlsson, Hans Hagberg, Peter Jakobsson, Lars Kunkel, Kjell Gustafsson