公开(公告)号：US5568520A

公开(公告)日：1996-10-22

申请号：US401127

申请日：1995-03-09

申请人： Bjorn Lindquist ,  Paul W. Dent

发明人： Bjorn Lindquist ,  Paul W. Dent

IPC分类号： H03M3/02 ,  H03D3/00 ,  H03D7/16 ,  H03M13/39 ,  H04B1/26 ,  H04B1/30 ,  H04L25/03 ,  H04L27/14 ,  H04L27/22 ,  H04L27/233 ,  H04L27/06

CPC分类号： H03D7/165 ,  H03D3/008 ,  H04L25/03273 ,  H04L27/233 ,  H04L2025/03401 ,  H04L2025/03407

摘要： 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. The hypotheses are then sequentially extended by one symbol, the slope and offset estimates are updated and the mismatches are accumulated to form a path metric value for each extended hypothesis, and resolving between said hypotheses based on said path metric values using a Viterbi Sequential Maximum Likelihood Sequence Estimation process to produce a most likely hypothesis of said modulated information symbols substantially unimpaired by said additive slope and offset.

摘要翻译： 公开了一种处理用信息符号调制以解决附加偏移和斜率的信号的方法。 首先，进行偏移和斜率的初始估计，然后进行一个或多个信息符号的序列的所有可能值的假设。 对于每个所述假设，相关联的数据符号序列用于对偏移和斜率进行改进的估计，并且针对每个假设存储改进的偏移和斜率估计。 对于每个假设，在计算预期信号值时使用改进的偏移和斜率估计，并且计算调制信号的样本与期望值之间的失配。 然后将假设顺序地扩展一个符号，更新斜率和偏移估计，并且不匹配被累积以形成每个扩展假设的路径度量值，并且基于使用维特比序列最大似然的所述路径度量值在所述假设之间进行解析 序列估计过程，以产生基本上不受所述相加斜率和偏移量影响的所述调制信息符号的最可能假设。

公开(公告)号：US5712637A

公开(公告)日：1998-01-27

申请号：US686399

申请日：1996-07-25

申请人： Bjorn Lindquist ,  Paul W. Dent

发明人： Bjorn Lindquist ,  Paul W. Dent

IPC分类号： H03M3/02 ,  H03D3/00 ,  H03D7/16 ,  H03M13/39 ,  H04B1/26 ,  H04B1/30 ,  H04L25/03 ,  H04L27/14 ,  H04L27/22 ,  H04L27/233 ,  H03M1/12

CPC分类号： H03D7/165 ,  H03D3/008 ,  H04L25/03273 ,  H04L27/233 ,  H04L2025/03401 ,  H04L2025/03407

摘要： 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. The hypotheses are then sequentially extended by one symbol, the slope and offset estimates arc updated and the mismatches are accumulated to form a path metric value for each extended hypothesis, and resolving between said hypotheses based on said path metric values using a Viterbi Sequential Maximum Likelihood Sequence Estimation process to produce a most likely hypothesis of said modulated information symbols substantially unimpaired by said additive slope and offset.

摘要翻译： 公开了一种处理用信息符号调制以解决附加偏移和斜率的信号的方法。 首先，进行偏移和斜率的初始估计，然后进行一个或多个信息符号的序列的所有可能值的假设。 对于每个所述假设，相关联的数据符号序列用于对偏移和斜率进行改进的估计，并且针对每个假设存储改进的偏移和斜率估计。 对于每个假设，在计算预期信号值时使用改进的偏移和斜率估计，并且计算调制信号的样本与期望值之间的失配。 然后将假设顺序地扩展一个符号，斜率和偏移估计被更新，并且不匹配被累积以形成每个扩展假设的路径度量值，并且基于使用维特比序列最大似然的所述路径量度值来解析所述假设 序列估计过程，以产生基本上不受所述相加斜率和偏移量影响的所述调制信息符号的最可能假设。

公开(公告)号：US08806021B2

公开(公告)日：2014-08-12

申请号：US12020905

申请日：2008-01-28

申请人： Bo Larsson ,  Henrik Bengtsson ,  Bjorn Lindquist ,  Markus Andreasson ,  Per Astrand ,  Olivier Moliner

发明人： Bo Larsson ,  Henrik Bengtsson ,  Bjorn Lindquist ,  Markus Andreasson ,  Per Astrand ,  Olivier Moliner

IPC分类号： G06F15/173 ,  H04L29/08 ,  G06Q10/10 ,  H04L12/18

CPC分类号： G06Q10/10 ,  H04L12/1818 ,  H04L67/02 ,  H04L67/14

摘要： 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. The first device is joined to an SNS session, automatically created by the server, responsive to receipts at the server, of a third audio and/or video fingerprint having the first predetermined length (T) from a second device that includes a portion of the first audio and/or video fingerprint or the second audio and/or video fingerprint periodically transmitted from the first device.

摘要翻译： 提供了用于自动创建社交网络服务（SNS）会话的便携式电子设备，系统和计算机程序产品的方法。 所述方法包括在第一设备处生成和传送音频和/或视频事件的第一音频和/或视频指纹。 第一音频和/或视频指纹具有第一预定长度（T）。 从第一设备周期性地向服务器发送第二音频和/或视频指纹。 第二音频和/或视频指纹具有小于第一预定长度（T）的第二预定长度（t），并且包括与音频和/或视频事件相关联的数据，其比在第一 音频和/或视频指纹。 第一设备被连接到由服务器自动创建的SNS会话，响应于在服务器处从第二设备接收具有第一预定长度（T）的第三音频和/或视频指纹（T）的第三音频和/或视频指纹， 第一音频和/或视频指纹或从第一设备定期发送的第二音频和/或视频指纹。

公开(公告)号：US20090193124A1

公开(公告)日：2009-07-30

申请号：US12020905

申请日：2008-01-28

申请人： Bo Larsson ,  Henrik Bengtsson ,  Bjorn Lindquist ,  Markus Andreasson ,  Per Astrand ,  Olivier Moliner

发明人： Bo Larsson ,  Henrik Bengtsson ,  Bjorn Lindquist ,  Markus Andreasson ,  Per Astrand ,  Olivier Moliner

IPC分类号： G06F15/16

CPC分类号： G06Q10/10 ,  H04L12/1818 ,  H04L67/02 ,  H04L67/14

摘要： 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. The first device is joined to an SNS session, automatically created by the server, responsive to receipts at the server, of a third audio and/or video fingerprint having the first predetermined length (T) from a second device that includes a portion of the first audio and/or video fingerprint or the second audio and/or video fingerprint periodically transmitted from the first device.

摘要翻译： 提供了用于自动创建社交网络服务（SNS）会话的便携式电子设备，系统和计算机程序产品的方法。 所述方法包括在第一设备处生成和传送音频和/或视频事件的第一音频和/或视频指纹。 第一音频和/或视频指纹具有第一预定长度（T）。 从第一设备周期性地向服务器发送第二音频和/或视频指纹。 第二音频和/或视频指纹具有小于第一预定长度（T）的第二预定长度（t），并且包括与音频和/或视频事件相关联的数据，其比在第一 音频和/或视频指纹。 第一设备被连接到由服务器自动创建的SNS会话，响应于在服务器处从第二设备接收具有第一预定长度（T）的第三音频和/或视频指纹（T）的第三音频和/或视频指纹， 第一音频和/或视频指纹或从第一设备定期发送的第二音频和/或视频指纹。

公开(公告)号：US20100109864A1

公开(公告)日：2010-05-06

申请号：US12265921

申请日：2008-11-06

申请人： Jacobus Haartsen ,  William O. Camp, JR. ,  Bjorn Lindquist

发明人： Jacobus Haartsen ,  William O. Camp, JR. ,  Bjorn Lindquist

IPC分类号： G08B1/08

CPC分类号： G01S5/0236 ,  G01C21/206 ,  G01S5/14

摘要： 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.

摘要翻译： 为了增强电子设备的建筑物位置确定，描述了使用抄写接入点将位置辅助信息传送到电子设备的系统和方法。 位置辅助信息可以包含用作参考点（例如，地标）的虚拟信标的映射，电子设备可以从该地图确定其相对于地图信息的位置。

公开(公告)号：US6029052A

公开(公告)日：2000-02-22

申请号：US886244

申请日：1997-07-01

申请人： Martin Isberg ,  Bjorn Lindquist ,  Peter Jakobsson ,  Jan Celander ,  Kjell Gustafsson ,  Lars-Peter Kunkel ,  Torsten Carlsson ,  Jacob Mannerstr.ang.le

发明人： Martin Isberg ,  Bjorn Lindquist ,  Peter Jakobsson ,  Jan Celander ,  Kjell Gustafsson ,  Lars-Peter Kunkel ,  Torsten Carlsson ,  Jacob Mannerstr.ang.le

IPC分类号： H04L27/22 ,  H03J5/24 ,  H04B1/16 ,  H04B1/30 ,  H04B1/40 ,  H04J1/04 ,  H04W88/06 ,  H04Q7/32

CPC分类号： H04W88/06 ,  H03J5/244 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/406

摘要： A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.

摘要翻译： 包括直接转换的多模式接收机（处理使用与接收信号带宽相同的频率范围内的中频）的接收信号，而不是超外差电路，允许重复使用接收机硬件组件而不是复制每个频带。 公开了各种实施例，其中重新使用低通滤波器，混频器，正交发生器，振荡器和放大器。

公开(公告)号：US08040219B2

公开(公告)日：2011-10-18

申请号：US12265921

申请日：2008-11-06

申请人： Jacobus Haartsen ,  William O. Camp, Jr. ,  Bjorn Lindquist

发明人： Jacobus Haartsen ,  William O. Camp, Jr. ,  Bjorn Lindquist

IPC分类号： G01S1/02

CPC分类号： G01S5/0236 ,  G01C21/206 ,  G01S5/14

摘要： 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.

摘要翻译： 为了增强电子设备的建筑物位置确定，描述了使用抄写接入点将位置辅助信息传送到电子设备的系统和方法。 位置辅助信息可以包含用作参考点（例如，地标）的虚拟信标的映射，电子设备可以从该地图确定其相对于地图信息的位置。

公开(公告)号：US6091963A

公开(公告)日：2000-07-18

申请号：US6867

申请日：1998-01-14

申请人： Jacob Mannerstr.ang.le ,  Martin Isberg ,  Bjorn Lindquist ,  Torsten Carlsson ,  Hans Hagberg ,  Peter Jakobsson ,  Lars Kunkel ,  Kjell Gustafsson

发明人： Jacob Mannerstr.ang.le ,  Martin Isberg ,  Bjorn Lindquist ,  Torsten Carlsson ,  Hans Hagberg ,  Peter Jakobsson ,  Lars Kunkel ,  Kjell Gustafsson

IPC分类号： H04B1/26 ,  H03D3/00 ,  H04B1/40 ,  H04B1/18

CPC分类号： H04B1/0057 ,  H03D3/007 ,  H04B1/005 ,  H04B1/406

摘要： 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. Further the receiver (104) comprises an output (112) intended to deliver baseband signals for both radio systems. The output (112) is connected to a baseband unit which is common to the radio systems. In the baseband unit, among other things, lowpass filtering, detection and neighbouring channel suppression are performed on the received radio signal that has been mixed down to the baseband frequency range.

摘要翻译： 本发明涉及一种接收机设备，包括适于接收两个频带（FB1，FB2）中的无线电信号的接收机（104）。 一个频带（FB1）中的无线电信号构成具有一定信道间隔的无线电系统（AMPS，NMT）的通信信号，而第二频带（FB2）的无线电信号构成用于第二无线电系统 （PCS1900，DCS1800，GSM）具有第二特定信道间隔。 接收器（104）包括两个输入端（108,11），每个输入端用于具有不同频带和信道间隔的无线电系统。 对于在一个输入（108）上发生的无线电信号，从RF范围直接到基带频率范围进行混频。 对于在第二输入（108）上发生的无线电信号，通过中频范围执行从射频范围到基带频率范围的混合。 此外，接收器（104）包括旨在为两个无线电系统传送基带信号的输出（112）。 输出（112）连接到无线电系统共用的基带单元。 在基带单元中，对已经混合到基带频率范围的接收无线电信号执行低通滤波，检测和相邻信道抑制。

公开(公告)号：US5579347A

公开(公告)日：1996-11-26

申请号：US365037

申请日：1994-12-28

申请人： Bjorn Lindquist ,  Martin Isberg ,  Heino Wendelrup ,  Martin Sallenhag ,  Kjell Gustafsson

发明人： Bjorn Lindquist ,  Martin Isberg ,  Heino Wendelrup ,  Martin Sallenhag ,  Kjell Gustafsson

IPC分类号： H04L27/38 ,  H03D3/00 ,  H04B1/10 ,  H04B1/22 ,  H04B1/26 ,  H04B1/30 ,  H04L27/14 ,  H04L27/227 ,  H04L27/233 ,  H03D1/22 ,  H04B1/12

CPC分类号： H03D3/009 ,  H04B1/30 ,  H04L27/2275 ,  H04L27/2332

摘要： A digitally compensated direct-conversion receiver includes devices for generating digital samples of a base-band in-phase signal and a base-band quadrature signal and for detecting the presence of a second-order product signal produced by an amplitude-modulated interfering signal. Also, the apparatus comprises a device for digitally compensating the digital samples by removing the second-order product signal, thereby producing compensated digital samples. In one method of digitally compensating samples of an information signal quadrature-modulating a carrier signal, estimated samples of a second-order product from a switched carrier signal are formed by averaging the digital samples during two time periods and by determining a time of ramps in the in-phase and quadrature signals that occur between the time periods due to the interfering signal. The digital samples may be differentiated and the results smoothed in determining the time of the ramps. In another apparatus, the estimated samples of the second-order product signal are produced by a device for averaging a square of a difference between respective digital samples of the in-phase signal and the quadrature signal, thereby determining an amplitude of the amplitude-modulated carrier signal, and a device for combining the amplitude and the digital samples, thereby generating the estimated samples.

摘要翻译： 数字补偿直接转换接收机包括用于产生基带同相信号和基带正交信号的数字样本的装置，并用于检测由幅度调制的干扰信号产生的二阶乘积信号的存在。 此外，该装置包括一个用于通过去除二阶乘积信号对数字样本进行数字补偿从而产生经补偿的数字样本的装置。 在对对载波信号进行正交调制的信息信号的样本进行数字补偿的一种方法中，通过在两个时间段期间对数字样本进行平均并且通过确定在两个时间段内的斜坡时间来形成来自切换载波信号的二阶乘积的估计样本 由于干扰信号在时间周期之间发生的同相和正交信号。 可以区分数字样本，并且在确定斜坡的时间时平滑结果。 在另一装置中，二阶乘积信号的估计样本由用于对同相信号和正交信号的相应数字样本之间的差的平方进行平均的装置产生，由此确定幅度调制的幅度 载波信号和用于组合幅度和数字样本的装置，由此产生估计样本。

公开(公告)号：US20090098880A1

公开(公告)日：2009-04-16

申请号：US11873171

申请日：2007-10-16

申请人： Bjorn Lindquist

发明人： Bjorn Lindquist

IPC分类号： G01S1/00 ,  H04Q7/32

CPC分类号： G01S19/34

摘要： 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.

摘要翻译： 一种用于确定移动终端的位置的方法包括重复地切换到接收GPS电路的GPS接收器电路的开机和关机，所述GPS接收器电路使用GPS信号来确定移动终端的位置。 响应于移动终端已经从先前确定的位置移动的距离来调节GPS接收机电路的上电至断电占空比。 响应于识别GPS隔离，响应于来自先前GPS确定位置的加速度确定的距离，移动终端的加速度确定的速度，位置辅助信息的可用性，可以调节上电至断电占空比 来自蜂窝系统，存在/不存在来自WLAN /蓝牙设备的信号和/或检测新的蜂窝基站ID。