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).
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Publication number: 20230075165Abstract: 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: ApplicationFiled: August 29, 2022Publication date: March 9, 2023Applicant: Combain Mobile ABInventors: Björn Lindquist, Karl Åström, Christoffer Kjellson
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Patent number: 10955518Abstract: 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: GrantFiled: January 11, 2018Date of Patent: March 23, 2021Assignee: Combain Mobile ABInventors: Björn Lindquist, Anders Mannesson, Karl Åström
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Patent number: 10547964Abstract: 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: GrantFiled: March 30, 2017Date of Patent: January 28, 2020Assignee: COMBAIN MOBILE ABInventors: Björn Lindquist, Rikard Windh
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Publication number: 20200018812Abstract: 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 saType: ApplicationFiled: January 11, 2018Publication date: January 16, 2020Inventors: Björn Lindquist, Anders Mannesson, Karl Åström
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Publication number: 20170295463Abstract: 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: ApplicationFiled: March 30, 2017Publication date: October 12, 2017Inventors: Björn LINDQUIST, Rikard WINDH
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Patent number: 8806021Abstract: 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: GrantFiled: January 28, 2008Date of Patent: August 12, 2014Assignees: Sony Corporation, Sony Mobile Communications ABInventors: Bo Larsson, Henrik Bengtsson, Bjorn Lindquist, Markus Andreasson, Per Astrand, Olivier Moliner
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Patent number: 8467804Abstract: 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: GrantFiled: October 16, 2007Date of Patent: June 18, 2013Assignees: Sony Corporation, Sony Mobile Communications ABInventor: Björn Lindquist
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Patent number: 8040219Abstract: 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: GrantFiled: November 6, 2008Date of Patent: October 18, 2011Assignee: Sony Ericsson Mobile Communications ABInventors: Jacobus Haartsen, William O. Camp, Jr., Bjorn Lindquist
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Publication number: 20100109864Abstract: 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: ApplicationFiled: November 6, 2008Publication date: May 6, 2010Inventors: Jacobus Haartsen, William O. Camp, JR., Bjorn Lindquist
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Publication number: 20090193124Abstract: 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: ApplicationFiled: January 28, 2008Publication date: July 30, 2009Inventors: Bo Larsson, Henrik Bengtsson, Bjorn Lindquist, Markus Andreasson, Per Astrand, Olivier Moliner
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Publication number: 20090098880Abstract: 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: ApplicationFiled: October 16, 2007Publication date: April 16, 2009Inventor: Bjorn Lindquist
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Patent number: 6904104Abstract: 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: GrantFiled: September 10, 1999Date of Patent: June 7, 2005Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Anders Khullar, Björn Lindquist
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Patent number: 6473471Abstract: 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: GrantFiled: August 13, 1996Date of Patent: October 29, 2002Assignee: Ericsson IncInventors: Björn Lindquist, Paul W. Dent
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Publication number: 20020151287Abstract: 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: ApplicationFiled: April 17, 2001Publication date: October 17, 2002Inventors: Bjorn Lindquist, Martin Isberg
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Patent number: 6466767Abstract: 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: GrantFiled: September 8, 1998Date of Patent: October 15, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Stefan Lidbrink, Kenneth Schönfeldt, Björn Lindquist, Kar-Fat Poon, Kenneth Ekman, Niclas Ögren
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Publication number: 20020071506Abstract: 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: ApplicationFiled: August 13, 1996Publication date: June 13, 2002Inventors: BJORN LINDQUIST, PAUL W. DENT
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Patent number: 6373909Abstract: 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: GrantFiled: October 22, 1999Date of Patent: April 16, 2002Assignee: Telefonaktiebolaget LM Ericsson (PUBL)Inventors: Björn Lindquist, Jan Celander, Sven Mattisson
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Publication number: 20010040932Abstract: 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: ApplicationFiled: October 22, 1999Publication date: November 15, 2001Inventors: BJORN LINDQUIST, JAN CELANDER, SVEN MATTISSON
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Patent number: 6198355Abstract: 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: GrantFiled: March 12, 1999Date of Patent: March 6, 2001Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Björn Lindquist, Magnus Nilsson
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Patent number: 6091963Abstract: 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: GrantFiled: January 14, 1998Date of Patent: July 18, 2000Assignee: Telefonaktiebolaget LM EricssonInventors: Jacob Mannerstr.ang.le, Martin Isberg, Bjorn Lindquist, Torsten Carlsson, Hans Hagberg, Peter Jakobsson, Lars Kunkel, Kjell Gustafsson