公开(公告)号：US08989301B2

公开(公告)日：2015-03-24

申请号：US12815189

申请日：2010-06-14

申请人： Anthony Richard Pratt ,  John Ivor Rewbridge Owen

发明人： Anthony Richard Pratt ,  John Ivor Rewbridge Owen

IPC分类号： H04L27/00 ,  G01S19/02 ,  H04L27/26

CPC分类号： G01S19/02 ,  H04L27/2601

摘要： A method of controlling a power spectrum of a navigation transmission signal in a navigation system is provided. The navigation transmission signal comprising a carrier signal, a navigation ranging signal, a data signal, and at least one subcarrier modulation signal. The method comprising modulating the navigation ranging signal with the at least one subcarrier modulation signal, wherein the at least one subcarrier modulation signal comprises a number, m, of amplitude levels, where m>2, to produce a modulated ranging signal. The amplitude levels having respective magnitudes and durations arranged to influence the power spectrum of the navigation signal in a predetermined manner. Modulating the carrier with the modulated ranging signal and the data signal to generate the navigation signal.

摘要翻译： 提供了一种在导航系统中控制导航传输信号的功率谱的方法。 该导航传输信号包括载波信号，导航测距信号，数据信号和至少一个子载波调制信号。 该方法包括利用所述至少一个副载波调制信号来调制导航测距信号，其中所述至少一个副载波调制信号包括振幅电平的数量m，其中m≥2，以产生调制的测距信号。 具有各自的幅度和持续时间的振幅水平被设置成以预定的方式影响导航信号的功率谱。 使用调制的测距信号和数据信号调制载波以产生导航信号。

公开(公告)号：US08253628B2

公开(公告)日：2012-08-28

申请号：US12951856

申请日：2010-11-22

申请人： Peter James Duffett-Smith ,  Anthony Richard Pratt ,  David William Bartlett

发明人： Peter James Duffett-Smith ,  Anthony Richard Pratt ,  David William Bartlett

IPC分类号： G01S3/02

CPC分类号： G01S19/26 ,  G01S5/0045 ,  G01S5/021 ,  G01S5/10 ,  G01S19/05 ,  G01S19/252 ,  G01S19/256 ,  H04B17/21

摘要： A method of and system for calibrating un-calibrated time information within a mobile terminal 101 is disclosed. The terminal has a receiver 203 capable of receiving signals from which calibrated time information carried by a calibrated system (a satellite positioning system) can be extracted, and a receiver 200 capable of receiving signals from which un-calibrated time information carried by an un-calibrated stable system (a cellular communications system) may be extracted. The time offset between calibrated time information extracted from the calibrated system and un-calibrated time information extracted from the un-calibrated stable system is determined at a first terminal position where the signals from the un-calibrated stable system are available, the travel times of the signals from the un-calibrated stable system are known or determined, and the signals from the calibrated system are available. The un-calibrated time information extracted from signals of the un-calibrated stable system received at a second terminal position, is calibrated from known or determined travel times of the signals from the un-calibrated stable system at the second terminal position and the time offset which has been determined.

摘要翻译： 公开了一种用于在移动终端101内校准未校准的时间信息的方法和系统。 终端具有能够接收由校准系统（卫星定位系统）携带的校准时间信息可以被提取的信号的接收机203，以及接收机200，其能够接收由未被校准的时间信息携带的未校准时间信息的信号， 可以提取校准的稳定系统（蜂窝通信系统）。 在从未校准的稳定系统的信号可用的第一终端位置处确定从校准系统提取的校准时间信息与从未校准的稳定系统提取的未校准时间信息之间的时间偏移， 来自未校准的稳定系统的信号是已知或确定的，并且来自校准系统的信号可用。 从在第二终端位置接收到的未校准的稳定系统的信号中提取的未校准的时间信息从在第二终端位置处未校准的稳定系统的信号和时间偏移的已知或确定的行进时间被校准 已经确定了。

公开(公告)号：US20100061884A1

公开(公告)日：2010-03-11

申请号：US12555644

申请日：2009-09-08

申请人： CRAIG CLARK ,  THOMAS D. JOHNSON ,  RICHARD PRATT ,  TIMOTHY SUH

发明人： CRAIG CLARK ,  THOMAS D. JOHNSON ,  RICHARD PRATT ,  TIMOTHY SUH

IPC分类号： C22C9/04 ,  C22C9/05 ,  C22C9/06

CPC分类号： C22C9/04 ,  C22C9/05

摘要： Disclosed is a white-colored copper alloy comprising by weight up to 30% zinc, up to 20% manganese, up to 5% nickel with the balance copper. This alloy may have from 6% to 25% zinc, from 4% to 17% manganese, from 0.1% to 3.5% nickel and the balance copper. The balance copper in the alloy may further contain at least one of: up to 0.5% of at least one of the group which consists of Sn, Si, Co, Ti, Cr, Fe, Mg, Zr, and Ag; and up to 0.1% of at least one of the group which consists of P, B, Ca, Ge, Se, Te. It may also contain up to 0.3% Zr by weight. The alloy may have an electrical conductivity greater than 2.5% IACS at eddy current gauge exciting frequencies between 60 kHz and 480 kHz.

摘要翻译： 公开了一种白色铜合金，其包含至多30％的锌，至多20％的锰，至多5％的镍，余量为铜。 该合金可以具有6％至25％的锌，4％至17％的锰，0.1％至3.5％的镍和余量的铜。 合金中的余量铜还可以含有以下中的至少一种：由Sn，Si，Co，Ti，Cr，Fe，Mg，Zr和Ag组成的组中的至少一种中的至少一种： 和至少一个由P，B，Ca，Ge，Se，Te组成的组中的至少一个的0.1％。 它还可以含有高达0.3重量％的Zr。 在60 kHz至480 kHz之间的涡电流表励磁频率下，该合金的导电率可以大于2.5％IACS。

公开(公告)号：US20070001810A1

公开(公告)日：2007-01-04

申请号：US11517744

申请日：2006-09-08

申请人： Jeff Scott ,  Richard Pratt

发明人： Jeff Scott ,  Richard Pratt

IPC分类号： H04Q5/22

CPC分类号： H01Q1/2225 ,  G06K19/0723 ,  G06K19/073 ,  G06K19/07749 ,  G06K19/07767 ,  G06K19/07786 ,  H01Q1/38 ,  H01Q9/16 ,  H01Q21/30

摘要： Tags, wireless communication systems, tag communication methods, and wireless communications methods are described. In one aspect, a tag includes a plurality of antennas configured to receive a plurality of first wireless communication signals comprising data from a reader, a plurality of rectifying circuits coupled with respective individual ones of the antennas and configured to provide rectified signals corresponding to the first wireless communication signals, wherein the rectified signals are combined to produce a composite signal, an adaptive reference circuit configured to vary a reference signal responsive to the composite signal, a comparator coupled with the adaptive reference circuit and the rectifying circuits and configured to compare the composite signal with respect to the reference signal and to output the data responsive to the comparison, and processing circuitry configured to receive the data from the comparator and to process the data.

摘要翻译： 标签，无线通信系统，标签通信方法和无线通信方法。 在一个方面，一种标签包括多个天线，其被配置为接收包括来自读取器的数据的多个第一无线通信信号，多个整流电路，其与相应的各个天线耦合，并且被配置为提供对应于第一 无线通信信号，其中整流的信号被组合以产生复合信号，自适应参考电路被配置为响应于复合信号改变参考信号;比较器，与自适应参考电路和整流电路耦合，并且被配置为比较复合信号 信号，并且响应于比较输出数据，以及处理电路，被配置为从比较器接收数据并处理数据。

公开(公告)号：US5455327A

公开(公告)日：1995-10-03

申请号：US169885

申请日：1993-12-16

申请人： Terry L. St. Clair ,  J. Richard Pratt

发明人： Terry L. St. Clair ,  J. Richard Pratt

IPC分类号： C08G59/50 ,  C08G73/10 ,  C09D179/08 ,  C08G69/26

CPC分类号： C08G73/1046 ,  C08G59/5033 ,  C09D179/08 ,  Y10T428/31504 ,  Y10T428/31721

摘要： Two monomers containing meta-biphenylenedioxy moieties were prepared. One monomer, a diamine, is used to prepare polyimide, polyamide, and epoxy polymers. The other monomer, a dianhydride, was used to prepare polyimide polymers. These polymers are used to make films, coatings, and selective membranes.

摘要翻译： 制备含有间 - 联苯二氧基部分的两种单体。 一种单体二胺用于制备聚酰亚胺，聚酰胺和环氧聚合物。 使用其他单体二酐来制备聚酰亚胺聚合物。 这些聚合物用于制备膜，涂层和选择性膜。

公开(公告)号：US5272248A

公开(公告)日：1993-12-21

申请号：US892058

申请日：1992-05-22

申请人： J. Richard Pratt ,  Terry L. St. Clair ,  Diane M. Stoakley ,  Harold D. Burks

发明人： J. Richard Pratt ,  Terry L. St. Clair ,  Diane M. Stoakley ,  Harold D. Burks

IPC分类号： C08G73/10 ,  C08K5/21 ,  C08K5/3415 ,  C08G69/26

CPC分类号： C08K5/21 ,  C08G73/1067 ,  C08K5/3415

摘要： A process for preparing polyamides having enhanced melt flow properties is described. The process consists of heating a mixture of a high molecular weight poly(amic acid) or polyimide with a low molecular weight amic acid or imide additive in the range of 0.05 to 15% by weight of additive. The polyimide powders so obtained show improved processability, as evidenced by lower melt viscosity by capillary rheometry. Likewise, films prepared from mixtures of polymers with additives show improved processability with earlier onset of stretching by TMA.

摘要翻译： 描述了一种制备具有增强的熔体流动性能的聚酰胺的方法。 该方法包括将高分子量聚（酰胺酸）或聚酰亚胺与低分子量酰胺酸添加剂的混合物加入0.05至15重量％的添加剂。 如此获得的聚酰亚胺粉末显示出改进的加工性能，如通过毛细管流变测定法的较低熔体粘度所证明的。 同样，由聚合物与添加剂的混合物制备的薄膜也显示改善的加工性能，并且通过TMA早期开始拉伸。

公开(公告)号：US5116939A

公开(公告)日：1992-05-26

申请号：US84064

申请日：1987-08-11

申请人： James C. Fletcher ,  J. Richard Pratt ,  Terry L. St. Clair ,  Diane M. Stoakley ,  Harold D. Burks

发明人： James C. Fletcher ,  J. Richard Pratt ,  Terry L. St. Clair ,  Diane M. Stoakley ,  Harold D. Burks

IPC分类号： C08G73/10 ,  C08K5/21 ,  C08K5/3415

CPC分类号： C08K5/21 ,  C08G73/1067 ,  C08K5/3415

摘要： A process for preparing polyimides having enhanced melt flow properties is described. The process consists of heating a mixture of a high molecular weight poly(amic acid) or polyimide with a low molecular weight amic acid or imide additive in the range of 0.05 to 15% by weight of additive. The polyimide powders so obtained show improved processability, as evidenced by lower melt viscosity by capillary rheometry. Likewise, films prepared from mixtures of polymers with additives show improved processability with earlier onset of stretching by TMA.

摘要翻译： 描述了制备具有增强的熔体流动性能的聚酰亚胺的方法。 该方法包括将高分子量聚（酰胺酸）或聚酰亚胺与低分子量酰胺酸添加剂的混合物加入0.05至15重量％的添加剂。 如此获得的聚酰亚胺粉末显示出改进的加工性能，如通过毛细管流变测定法的较低熔体粘度所证明的。 同样，由聚合物与添加剂的混合物制备的薄膜也显示改善的加工性能，并且通过TMA早期开始拉伸。

公开(公告)号：US08522585B1

公开(公告)日：2013-09-03

申请号：US11751507

申请日：2007-05-21

申请人： Richard Pratt ,  Thomas D. Johnson ,  Timothy Suh

发明人： Richard Pratt ,  Thomas D. Johnson ,  Timothy Suh

IPC分类号： B21C43/00 ,  A01N59/20 ,  A01N59/16 ,  A01N25/00 ,  A61K33/34 ,  A61K33/24

CPC分类号： A61L2/238 ,  A01N25/08 ,  A01N59/20 ,  A61K31/30 ,  B21B45/00 ,  C22C9/00 ,  C22C9/04 ,  C22F1/08 ,  Y02A50/473 ,  Y10T428/12993 ,  A01N25/34 ,  A01N2300/00

摘要： A method for maintaining and using a high concentration of dissolved copper on a surface of a useful article by providing a copper surface without coatings thereon which increase the wetting angle and which isolate the copper surface and which has a surface roughness between 2 and 50 micro inches Ra, so as to kill microbes thereon.

摘要翻译： 一种在有用物品的表面上保持和使用高浓度的溶解铜的方法，该方法是通过提供不含涂层的铜表面，其增加润湿角度并分离铜表面，并且其表面粗糙度在2-50微英寸 Ra，以便在其上杀死微生物。

公开(公告)号：US20130002479A1

公开(公告)日：2013-01-03

申请号：US13344297

申请日：2012-01-05

申请人： Anthony Richard Pratt ,  Murray Robert Jarvis

发明人： Anthony Richard Pratt ,  Murray Robert Jarvis

IPC分类号： G01S19/42

CPC分类号： G01S19/28 ,  G01S19/40 ,  G01S19/43

摘要： Apparatus for calculating the position of a receiver in dependence on the time it takes signalling events to travel from a plurality of satellites to the receiver, obtains an indication of a transit time for a signalling event to travel from each satellite to the receiver, and forms an indication of an expected transit time for a signalling event to travel from the satellite to the receiver. The obtained indication of the transit time and the indication of the expected transit time for each non-reference satellite are compared with the obtained indication of the transit time and the indication of the expected transit time for the reference satellite to form residuals that are representative of a combined error in those indications of expected transit time; and the position of the receiver is calculate without calculating the integer ambiguities in the obtained transit times, in dependence on the residuals.

摘要翻译： 用于根据信令事件从多个卫星行进到接收机的时间来计算接收机的位置的装置，获得信令事件从每个卫星行进到接收机的通行时间的指示，并且形成 指示信号事件从卫星传播到接收机的预期传播时间。 将获得的过境时间指示和每个非参考卫星的预期渡越时间的指示与获得的过境时间的指示和参考卫星的预期渡越时间的指示进行比较，以形成代表 这些预期通行时间的指示的组合错误; 并且根据残差计算接收机的位置，而不计算所获得的传送时间内的整数模糊度。

公开(公告)号：US08279116B2

公开(公告)日：2012-10-02

申请号：US12865387

申请日：2009-01-07

申请人： Peter James Duffett-Smith ,  Robert Willem Rowe ,  Anthony Richard Pratt

发明人： Peter James Duffett-Smith ,  Robert Willem Rowe ,  Anthony Richard Pratt

IPC分类号： G01S19/37

CPC分类号： G01S19/30 ,  G01S19/37

摘要： A method of processing received satellite radio signals is disclosed in which signals are received the signals from plural satellites through a common antenna. The received signals are digitised to produce a time-series of digitised signal samples and a plurality of replicas representing the signals of each of the plurality of satellites are obtained. At least one sample is selected from each of the replicas and the elements of a register are set equal to the selected replica samples. Thereafter, in turn, for each one of said digitised signal samples, the value of the digitised signal sample is combined with each of the values of the elements of the register to produce corresponding modified values; and the modified values corresponding to each of said register elements are accumulated.

摘要翻译： 公开了处理接收到的卫星无线电信号的方法，其中通过公共天线从多个卫星接收信号。 接收的信号被数字化以产生时间序列的数字化信号样本，并且获得表示多个卫星中的每一个的信号的多个副本。 从每个副本中选择至少一个样本，并且将寄存器的元素设置为等于所选择的副本样本。 此后，依次对于所述数字化信号样本中的每一个，数字化信号样本的值与寄存器的元素的每个值组合以产生相应的修改值; 并且对应于每个所述寄存器元件的修改值被累积。