公开(公告)号：US20060209979A1

公开(公告)日：2006-09-21

申请号：US11261513

申请日：2005-10-31

申请人： Magnus Sandell ,  Darren McNamara ,  Steve Parker

发明人： Magnus Sandell ,  Darren McNamara ,  Steve Parker

IPC分类号： H04L1/02

CPC分类号： H04L27/2657 ,  H04L27/2675 ,  H04L2027/0032 ,  H04L2027/0065 ,  H04L2027/0075

摘要： The present invention relates to estimating and correcting for frequency offset errors in wireless receivers, and is particularly but not exclusively related to MIMO WLAN applications. The present invention provides an improved method of tracking receiver frequency offsets in a receiver for MIMO systems. These receiver based frequency offset components are caused by errors or inaccuracies in various receiver sub-systems such as phase lock loops or carrier frequency oscillator error, and sampling clock rate errors. The frequency offsets due to each of a number of receiver sub-systems are estimated by monitoring frequency offsets on a number of channels or subcarriers (such as OFDM pilot channels) on different frequencies. These channel frequency offsets are preferably estimated by detecting the phase rotation between adjacent pilot symbols on each respective channel. They are then weighted according to a quality parameter of the estimates, which corresponds to their accuracy. An example of a quality parameter is the effective SNR of the respective channels, or preferably the error variance of the phase rotation. In an embodiment the quality parameter is or is proportional to ∥Hx∥2. The weighted channel frequency offsets are then used to determine one or more receiver sub-system frequency offset components. For example a least squares line fit analysis can be performed.

摘要翻译： 本发明涉及估计和校正无线接收机中的频率偏移误差，并且特别地但并不排他地涉及MIMO WLAN应用。 本发明提供了一种在MIMO系统的接收机中跟踪接收机频率偏移的改进方法。 这些基于接收机的频率偏移分量由各种接收机子系统中的错误或不准确性引起，例如锁相环或载波频率振荡器错误以及采样时钟速率误差。 通过在不同频率上的多个信道或子载波（例如OFDM导频信道）上监视频率偏移来估计由多个接收机子系统中的每一个引起的频率偏移。 这些信道频率偏移优选地通过检测每个相应信道上的相邻导频符号之间的相位旋转来估计。 然后根据估计的质量参数对它们进行加权，这对应于它们的准确度。 质量参数的示例是相应通道的有效SNR，或优选地是相位旋转的误差方差。 在一个实施例中，质量参数为或等于∥Hx∥2。 加权的信道频率偏移然后用于确定一个或多个接收机子系统频率偏移分量。 例如，可以执行最小二乘线拟合分析。

公开(公告)号：US06982962B1

公开(公告)日：2006-01-03

申请号：US09546887

申请日：2000-04-10

申请人： Eric Michael Lunsford ,  Steve Parker ,  David Kammer ,  David Moore

发明人： Eric Michael Lunsford ,  Steve Parker ,  David Kammer ,  David Moore

IPC分类号： H04B7/005

CPC分类号： H04W48/18

摘要： A system and method for selecting a network access provider using a portable information device (PID) includes considering the user's pre-stated preferences. The pre-stated preferences may include, but are not limited to, reliability, security, signal strength, cost or appropriateness of service provider. The network access providers may be chosen from, but not limited to, a network access server at a corporate office or a cellular telephone. A score is calculated for each available network access provider and a connection is made based on the optimum provider that fits with the preferences of the user.

摘要翻译： 使用便携式信息设备（PID）来选择网络接入提供商的系统和方法包括考虑用户的预先设定的偏好。 预先设定的偏好可以包括但不限于服务提供商的可靠性，安全性，信号强度，成本或适当性。 网络接入提供商可以从但不限于在公司办公室或蜂窝电话处的网络接入服务器。 为每个可用的网络接入提供商计算分数，并且基于与用户的偏好匹配的最佳提供商进行连接。

公开(公告)号：US20120106753A1

公开(公告)日：2012-05-03

申请号：US12917711

申请日：2010-11-02

申请人： Lalin S. Theverapperuma ,  Darcy Zehnder ,  Steve Parker ,  Talal Aly-Youssef

发明人： Lalin S. Theverapperuma ,  Darcy Zehnder ,  Steve Parker ,  Talal Aly-Youssef

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L2021/02165 ,  H04R2201/107 ,  H04R2410/05 ,  H04R2430/01

摘要： A method of operating a microphone system includes providing first and second microphones associated with a same human speaker. An analog ambient noise signal is received from the first microphone. An analog speech signal is received from the second microphone. The analog ambient noise signal is converted into a digital ambient noise signal. The analog speech signal is converted into a digital speech signal. Digital noise cancellation is performed on the digital speech signal dependent upon the digital ambient noise signal. The digital noise cancellation is performed by digital circuitry. The noise canceled digital speech signal is inputted into an intercom system. A low power condition of the microphone system and/or a failure of the digital circuitry is sensed. In response to the sensing step, an analog-based intercom signal is inputted into the intercom system. The analog-based intercom signal is dependent on the analog speech signal and substantially independent of the analog ambient noise signal. The analog-based intercom signal is inputted into the intercom system without noise cancellation having been performed on the analog-based intercom signal.

摘要翻译： 一种操作麦克风系统的方法包括提供与同一个人讲话者相关联的第一和第二麦克风。 从第一麦克风接收模拟环境噪声信号。 从第二麦克风接收模拟语音信号。 模拟环境噪声信号被转换为数字环境噪声信号。 模拟语音信号被转换成数字语音信号。 取决于数字环境噪声信号对数字语音信号进行数字噪声消除。 数字噪声消除由数字电路执行。 噪声消除的数字语音信号被输入到对讲系统中。 感测到麦克风系统的低功率状况和/或数字电路的故障。 响应于感测步骤，将基于模拟的对讲信号输入到对讲系统中。 基于模拟的对讲信号取决于模拟语音信号，并且基本上独立于模拟环境噪声信号。 基于模拟的内部通信信号被输入到对讲系统中，没有对基于模拟的对讲信号进行噪声消除。

公开(公告)号：US07512685B2

公开(公告)日：2009-03-31

申请号：US09727982

申请日：2000-11-30

申请人： E. Michael Lunsford ,  Steve Parker ,  David Kammer ,  David Moore

发明人： E. Michael Lunsford ,  Steve Parker ,  David Kammer ,  David Moore

IPC分类号： G06F15/16 ,  H04B7/00

CPC分类号： H04L67/06 ,  H04L12/5692 ,  H04L67/36 ,  H04M1/274516 ,  H04M1/7253 ,  H04M2250/02 ,  H04W40/246 ,  H04W88/06

摘要： A wireless communication method for selective transmission of data among a group of mobile computing devices. A user's device is used to broadcast a query to determine a group of mobile computing devices within communications range. A list of resulting mobile computing devices is then presented to the user through the device's interface. The user selects at least one of the mobile computing devices from the list for a data transfer. The data transfer is then performed to the selected at least one mobile computing device. Upon completion of the transfer, a confirmation is presented to the user. In this manner, wireless data transfers can be performed with a number of different mobile computing devices within communications range. The user can select a number of mobile computing devices from the list and perform the data transfer to each of the selected number in a single step. The data transfer is performed using a wireless RF communications link. The wireless RF communications link can be compatible with a version of the Bluetooth specification.

公开(公告)号：US06945461B1

公开(公告)日：2005-09-20

申请号：US09823449

申请日：2001-03-30

申请人： Tg Hien ,  Liang-Hien Lin ,  Charlie Payne ,  Steve Parker ,  William G. Becker

发明人： Tg Hien ,  Liang-Hien Lin ,  Charlie Payne ,  Steve Parker ,  William G. Becker

IPC分类号： G06K7/00 ,  G06K17/00

CPC分类号： G06K19/07732 ,  G06K17/00

摘要： An apparatus and method for enhancement of the functionality of electronic devices. In one embodiment, the present invention is comprised of an intermediary apparatus. The intermediary apparatus is adapted to be communicatively coupled with an electronic device. In the present embodiment, the apparatus is further comprised of a first module. The first module is comprised of a first electrical connector which is adapted to enable communication between the first module and the electronic device. The first module is further comprised of a second electrical connector adapted to enable communication between the first module and a second module. The first module is further comprised of an opening that is adapted to receive a second module. Additionally, the apparatus is further comprised of a controller adapted to control the communication between the first module and a second module, provided a second module is inserted into the first module.

摘要翻译： 一种用于增强电子设备的功能的装置和方法。 在一个实施例中，本发明由中间装置组成。 中间设备适于与电子设备通信地耦合。 在本实施例中，该装置还包括第一模块。 第一模块包括适于实现第一模块和电子设备之间的通信的第一电连接器。 第一模块还包括适于实现第一模块和第二模块之间的通信的第二电连接器。 第一模块还包括适于接收第二模块的开口。 此外，如果将第二模块插入到第一模块中，则该装置还包括适于控制第一模块和第二模块之间的通信的控制器。

公开(公告)号：US20050166605A1

公开(公告)日：2005-08-04

申请号：US10508966

申请日：2003-03-20

申请人： Andrew Forbes ,  Mark Taylor ,  Steve Parker

发明人： Andrew Forbes ,  Mark Taylor ,  Steve Parker

IPC分类号： F25D9/00 ,  F25D15/00 ,  F25D17/06 ,  F25D31/00 ,  F25D17/02

CPC分类号： F25D17/062 ,  F25D15/00 ,  F25D31/007 ,  F25D2317/0651 ,  F25D2317/0654 ,  F25D2317/0664 ,  F25D2317/0665 ,  F25D2331/803 ,  F25D2400/28

摘要： The invention provides refrigerating apparatus (10;100) for chilling an object (26), the refrigerating apparatus (10;100) comprising a chamber (12;112) having a longitudinal axis (18;118), an inlet (22;122) and an outlet (24;124) spaced along the longitudinal axis (18;118), the refrigerating apparatus (10;100) further comprising means for generating a fluid flow, characterised in that notation means (128) are provided for causing the fluid flow to follow a helical path about the longitudinal axis (18;118) within the chamber (12;112) between the inlet (22;122) and the outlet (24;124).

摘要翻译： 本发明提供一种用于冷藏物体（26）的制冷装置（10; 100），所述制冷装置（10; 100）包括具有纵向轴线（18; 118）的腔室（12; 112），入口 ）和沿所述纵向轴线（18; 118）间隔开的出口（24; 124），所述制冷装置（10; 100）还包括用于产生流体流动的装置，其特征在于，提供符号装置（128） 流体流动沿着在入口（22; 122）和出口（24; 124）之间的腔室（12; 112）内的纵向轴线（18; 118）的螺旋路径。

公开(公告)号：US06614350B1

公开(公告)日：2003-09-02

申请号：US09709166

申请日：2000-11-08

申请人： Michael Lunsford ,  Steve Parker ,  David Kammer ,  Nicholas A. Thomas ,  David Moore

发明人： Michael Lunsford ,  Steve Parker ,  David Kammer ,  Nicholas A. Thomas ,  David Moore

IPC分类号： G08B1314

CPC分类号： G08B13/1427 ,  G08B13/1418 ,  H04L63/0492 ,  H04L63/10 ,  H04W12/08

摘要： A method and system for effecting a security web upon multiple devices. In one embodiment of the invention, multiple devices are enabled to respond as authorized members of a security web such that each device acts as a co-monitoring device within the web. Further, each device transmits an identifiable RF signal at regular time intervals and is enabled to search for the transmitted RF signal from every other device within the security web. Next the invention determines a non-authorized loss of proximity from the web of any of the devices of the web. Upon determining a non-authorized loss of proximity of any device, the invention provides for at least one of the devices of the web to initiate an event.

摘要翻译： 一种在多个设备上实现安全网络的方法和系统。 在本发明的一个实施例中，多个设备能够作为安全网络的授权成员进行响应，使得每个设备充当网络内的共同监视设备。 此外，每个设备以规则的时间间隔发送可识别的RF信号，并且能够从安全web内的每个其他设备搜索发送的RF信号。 接下来，本发明确定了来自网络的任何设备的网络的非授权的接近损失。 在确定任何设备的非授权的接近损失之后，本发明提供了网络的至少一个设备来发起事件。

公开(公告)号：US08577057B2

公开(公告)日：2013-11-05

申请号：US12917711

申请日：2010-11-02

申请人： Lalin S Theverapperuma ,  Darcy Zehnder ,  Steve Parker ,  Talal Aly-Youssef

发明人： Lalin S Theverapperuma ,  Darcy Zehnder ,  Steve Parker ,  Talal Aly-Youssef

IPC分类号： H04B15/00

CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L2021/02165 ,  H04R2201/107 ,  H04R2410/05 ,  H04R2430/01

摘要： A method of operating a microphone system includes providing first and second microphones associated with a same human speaker. An analog ambient noise signal is received from the first microphone. An analog speech signal is received from the second microphone. The analog ambient noise signal is converted into a digital ambient noise signal. The analog speech signal is converted into a digital speech signal. Digital noise cancellation is performed on the digital speech signal dependent upon the digital ambient noise signal. The digital noise cancellation is performed by digital circuitry. The noise canceled digital speech signal is inputted into an intercom system. A low power condition of the microphone system and/or a failure of the digital circuitry is sensed. In response to the sensing step, an analog-based intercom signal is inputted into the intercom system. The analog-based intercom signal is dependent on the analog speech signal and substantially independent of the analog ambient noise signal. The analog-based intercom signal is inputted into the intercom system without noise cancellation having been performed on the analog-based intercom signal.

摘要翻译： 一种操作麦克风系统的方法包括提供与同一个人讲话者相关联的第一和第二麦克风。 从第一麦克风接收模拟环境噪声信号。 从第二麦克风接收模拟语音信号。 模拟环境噪声信号被转换为数字环境噪声信号。 模拟语音信号被转换成数字语音信号。 取决于数字环境噪声信号对数字语音信号进行数字噪声消除。 数字噪声消除由数字电路执行。 噪声消除的数字语音信号被输入到对讲系统中。 感测到麦克风系统的低功率状况和/或数字电路的故障。 响应于感测步骤，将基于模拟的对讲信号输入到对讲系统中。 基于模拟的对讲信号取决于模拟语音信号，并且基本上独立于模拟环境噪声信号。 基于模拟的内部通信信号被输入到对讲系统中，没有对基于模拟的对讲信号进行噪声消除。

公开(公告)号：US20050089112A1

公开(公告)日：2005-04-28

申请号：US10935189

申请日：2004-09-08

申请人： Robert Piechocki ,  Magnus Sandell ,  Steve Parker ,  Christophe Andrieu

发明人： Robert Piechocki ,  Magnus Sandell ,  Steve Parker ,  Christophe Andrieu

IPC分类号： H04J99/00 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L25/03 ,  H04L1/02

CPC分类号： H04L1/005 ,  H04L1/0618 ,  H04L25/03171 ,  H04L2025/03375

摘要： This invention is generally concerned with methods, apparatus and processor control code for decoding a signal received over a MIMO (multiple input-multiple output) channel. A method of decoding a signal encoded as a string of symbols over space and time and/or frequency, transmitted over a MIMO (multiple-input multiple-output) channel, and received at a plurality of receive antennas, each transmitted symbol having one of a plurality of values, said decoding comprising determining a probability distribution for each symbol of the transmitted string of symbols; the method comprising: determining an initial estimate of said transmitted string of symbols from said received signal using an estimate of a response of said MIMO channel; and determining from said initial estimate a probability distribution for each symbol of the transmitted string of symbols, the probability distribution representing the likelihood of a symbol of the string having each of its possible values when other symbols of the transmitted string are treated as noise.

摘要翻译： 本发明通常涉及用于对通过MIMO（多输入多输出）信道接收的信号进行解码的方法，装置和处理器控制码。 一种通过空间和时间和/或频率编码为符号串的信号的方法，其通过MIMO（多输入多输出）信道发送并在多个接收天线处接收，每个发射符号具有 多个值，所述解码包括确定所发送的符号串的每个符号的概率分布; 所述方法包括：使用所述MIMO信道的响应的估计来从所述接收信号确定所述发送的符号串的初始估计; 并且从所述初始估计中确定所发送的符号串的每个符号的概率分布，所述概率分布表示当发送的字符串的其他符号被视为噪声时具有其每个可能值的字符串的符号的似然性。

公开(公告)号：US20060232468A1

公开(公告)日：2006-10-19

申请号：US11261516

申请日：2005-10-31

申请人： Steve Parker ,  Satoshi Mizoguchi

发明人： Steve Parker ,  Satoshi Mizoguchi

IPC分类号： H01Q3/00

CPC分类号： H01Q3/24 ,  H01Q1/241 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0618

摘要： An antenna unit comprising orientation detection means and/or force detection means and an antenna is operable to control its transmission and/or reception characteristic in response to detected orientation of the antenna unit. Absolute orientation of the unit will affect the transmission and/or reception characteristics; in one embodiment changes in orientation and motion will affect these characteristics in order to take account of Doppler effects.

摘要翻译： 包括姿态检测装置和/或力检测装置和天线的天线单元可操作以响应于所检测到的天线单元的取向来控制其发射和/或接收特性。 单位的绝对方向将影响传输和/或接收特性; 在一个实施例中，取向和运动的变化将影响这些特征，以便考虑多普勒效应。