专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

131. 发明公开

EP1577898A2 Method for reading multiple bit ROM cell 有权
标题翻译： Verfahren zum Lesen von Multibit ROM-Zellen
公开(公告)号：EP1577898A2
公开(公告)日：2005-09-21
申请号：EP05251525.1
申请日：2005-03-14
申请人： Cambridge Silicon Radio Limited
发明人： Chang, Simon Cambridge Silicon Radio Limited
IPC分类号： G11C17/10 , G11C11/56
CPC分类号： G11C17/10 , G11C11/5692
摘要： A method for reading data stored in a multiple bit memory cell, the memory cell comprising a switch located within an array of switches arranged in columns and rows, each switch having a control node and first and second switched nodes between which the flow of current is dependent on the voltage applied to the control node, wherein each row has a word line connected to the control nodes of the switches of that row, each column comprises only one switch from each row, and each column has first, second and third bit lines connectable to one of the switched nodes of each switch of that column to define the stored data, the method comprising: fixing the voltage of the second bit line of the switch and reading data from the first and third bit lines, and subsequently: fixing the voltage of the first bit line of the switch and reading data from the second and third bit lines.
摘要翻译：一种用于读取存储在多位存储单元中的数据的方法，所述存储器单元包括位于列和列中布置的开关阵列内的开关，每个开关具有控制节点和第一和第二开关节点，其间的电流流为取决于施加到控制节点的电压，其中每行具有连接到该行的开关的控制节点的字线，每列仅包括来自每一行的一个开关，并且每列具有第一，第二和第三位线可连接到该列的每个开关的切换节点之一以定义存储的数据，该方法包括：固定开关的第二位线的电压并从第一和第三位线读取数据，随后：将开关的第一位线的电压，并从第二和第三位线读取数据。

132. 发明授权

EP1201051B1 TESTING RESPONSE OF A RADIO TRANSCEIVER 有权
标题翻译： ANSWER测试一个无线电发射机/接收机
公开(公告)号：EP1201051B1
公开(公告)日：2005-02-02
申请号：EP00946141.9
申请日：2000-07-18
申请人： Cambridge Silicon Radio Limited
发明人： COLLIER, James, Digby, Yarlet
IPC分类号： H04B17/00
CPC分类号： H04B17/20 , H04B17/15
摘要： A radio transceiver comprising: an antenna; a local oscillator for generating a local oscillator signal at a local oscillator frequency; a receiver capable of receiving a first radio frequency signal from the antenna at a receiver input and having a first mixer for mixing a signal derived from the first radio signal with the said local oscillator signal to generate an intermediate frequency signal, and a receiver output for providing an output signal dependant on the intermediate frequency signal; a transmitter capable of receiving an input signal at a transmitter input and having a second mixer for mixing a signal derived from the input signal with a local oscillator signal to generate a second radio frequency signal for transmission; a switching arrangement having a normal configuration in which the transmitter is coupled to the antenna to apply the second radio frequency signal to the antenna, and a testing configuration in which the transmitter is coupled to the receiver input to apply the second radio frequency signal to the receiver input; and a signal processor coupled to the transmitter input and the receiver output and capable of, when the switching arrangement is in the testing configuration, applying a testing signal to the transmitter input to cause the transmitter to generate a radio frequency test signal, and determining from the output signal of the receiver the response of the receiver to the radio frequency test signal.

133. 发明公开

EP1364279A2 GENERATING RANDOM DATA 有权
标题翻译：随机数生成
公开(公告)号：EP1364279A2
公开(公告)日：2003-11-26
申请号：EP02715561.3
申请日：2002-01-28
申请人： Cambridge Silicon Radio Limited
发明人： COLLIER, James, Digby, Yarlet,Church Farm
IPC分类号： G06F7/58
CPC分类号： G06F7/588 , G06F7/582
摘要： A method for generating random data, the method comprising repeatedly performing a series of operations, and the series of operations comprising processing a seed value to generate a resulting value for use as the seed value in a subsequent performance of the series of operations and to generate output random data; wherein the series of operations also comprises: determining whether a predetermined amount of new truly random data is available; and if such data is available, modifying the generation of at least the resulting value in dependence on the new truly random data.

134. 发明公开

EP1206839A1 PHASE SHIFTING ARRANGEMENT 有权
标题翻译：相换挡装置
公开(公告)号：EP1206839A1
公开(公告)日：2002-05-22
申请号：EP00946140.1
申请日：2000-07-18
申请人： Cambridge Silicon Radio Limited
发明人： COLLIER, James Digby Yarlet , PENFOLD, Justin David John
IPC分类号： H03L7/081 , H03H11/18 , H03H11/22
CPC分类号： H03H11/22 , H03H11/18 , H03L7/0812
摘要： A phase shifting arrangement for generating a set of mutually orthogonal signals, comprising: a phase shifting unit for receiving an input signal and having a first phase shift circuit for generating a first output signal phase-shifted by a first amount with respect to the input signal, a second phase shift circuit for generating a second output signal phase-shifted by a second amount with respect to the input signal, and a third phase shift circuit for generating a third output signal phase-shifted by a third amount with respect to the input signal; the phase shift caused by each of the first, second and third phase shift circuits being adjustable in response to a feedback signal; and a phase shift adjustment circuit for generating the feedback signal and arranged to receive the first, second and third output signals and a fourth output signal of the same phase as the input signal and thereby generate an error signal dependent on the deviation of the first, second, third and fourth signals from mutual orthogonality; and a feedback circuit arranged to receive the error signal and form the feedback signal in dependence thereon in so as to cause the first, second and third phase shift circuits to, on receiving the feedback signal, generate the first, second and third signals in closer orthogonality to each other and to the input signal.

135. 发明授权

EP2309496B1 Adaptive audio encoding and decoding 有权
标题翻译：自适应音频编码和解码
公开(公告)号：EP2309496B1
公开(公告)日：2015-08-12
申请号：EP09014292.8
申请日：2009-11-16
申请人： Cambridge Silicon Radio Limited
发明人： Trainor, David
IPC分类号： G10L19/22 , H04L1/00
CPC分类号： G10L19/22 , H04L1/0014 , H04L1/0041

136. 发明授权

EP2095517B1 FM SIGNAL QUALITY MEASUREMENT 有权
标题翻译： FM-SIGNAL-QUALITÄTSMESSUNG
公开(公告)号：EP2095517B1
公开(公告)日：2014-04-16
申请号：EP07824754.1
申请日：2007-11-29
申请人： Cambridge Silicon Radio Limited
发明人： POPESCU, Andrei Barbu
IPC分类号： H04B1/10
CPC分类号： H04B1/1646 , H04B1/1027 , H04B17/318

137. 发明公开

EP2595352A1 Method and apparatus for enhanced channel estimation using a frame based compensation of changes of the communication channel 有权
标题翻译：的方法和装置使用用于信道变化的基于帧的补偿改进的信道估计
公开(公告)号：EP2595352A1
公开(公告)日：2013-05-22
申请号：EP11189856.5
申请日：2011-11-18
申请人： Cambridge Silicon Radio Limited
发明人： Popescu, Andrei
IPC分类号： H04L25/02
CPC分类号： H04L25/0202 , H04L25/022 , H04L25/0228 , H04L27/2647
摘要： Schemes for combining channel-estimates from different OFDM frames after compensating for changes in receiver-transmitter characteristics.
摘要翻译：方案，用于补偿在接收器 - 发射器特性的变化之后，从不同的OFDM帧的信道估计相结合。

138. 发明授权

EP2454813B1 FINE GRAIN TUNING 有权
标题翻译：细晶VOTE
公开(公告)号：EP2454813B1
公开(公告)日：2013-05-01
申请号：EP10736659.3
申请日：2010-07-16
申请人： Cambridge Silicon Radio Limited
发明人： CERCELARU, Sever
IPC分类号： H03J3/06
CPC分类号： H03J3/06

139. 发明公开

EP2574954A1 Wi-Fi position fix 有权
标题翻译： WiFi的Positionsbestimmung
公开(公告)号：EP2574954A1
公开(公告)日：2013-04-03
申请号：EP12160689.1
申请日：2012-03-22
申请人： Cambridge Silicon Radio Limited
发明人： Jarvis, Murray , Tarlow, Ben
IPC分类号： G01S5/02
CPC分类号： G01S5/0278 , G01S5/02 , G01S5/14
摘要： A method of forming an estimate of the two-dimensional position of a radio receiver relative to a plurality of radio transmitters each having an associated position estimate and a position uncertainty expressible as an uncertainty ellipse having major and minor axes, the method comprising: receiving at the radio receiver signals from the plurality of radio transmitters and forming in dependence on those received signals a set of transmitter weighting values each expressing a measure of the distance of a respective radio transmitter from the radio receiver; for each of the plurality of radio transmitters, scaling an uncertainty vector describing the orientation of the respective uncertainty ellipse in a predetermined coordinate system by a scaling value dependent on the respective transmitter weighting value and rotating that uncertainty vector by multiplying its argument by a factor of four; summing the scaled vectors of the plurality of radio transmitters so as to form a total vector; dividing the argument of the total vector by a factor of four and using the resulting rotated total vector to define a compound coordinate basis comprising first and second coordinate axes; and forming an estimate of the two-dimensional position of the radio receiver in the compound coordinate basis by: projecting the major and minor axes of each uncertainty ellipse onto the first and second coordinate axes so as to form a set of projected components for each axis; summing the projected components of each axis so as to form a total uncertainty along each axis; for each uncertainty ellipse, forming first and second coordinate axis weighting values from the respective transmitter weighting values scaled such that the first/second coordinate axis weighting value decreases as the total uncertainty along that first/second coordinate axis increases; and calculating the position of the radio receiver by means of a weighted centroid using the first and second coordinate axis weighting values and the position estimates of the plurality of the radio transmitters expressed in the compound coordinate basis.
摘要翻译：一种形成无线电接收机相对于具有相关联的位置估计的多个无线电发射机的二维位置的估计和表示为具有主轴和短轴的不定性椭圆的位置不确定度的方法，所述方法包括：所述无线电接收机从所述多个无线电发射机发送信号，并根据所接收的信号形成一组发射机加权值，每组发射机加权值表示各个无线电发射机距无线电接收机的距离的测量; 对于所述多个无线电发射机中的每一个，通过取决于相应的发射机加权值的缩放值来缩放描述各个不确定性椭圆在预定坐标系中的取向的不确定性矢量，并通过将该参数乘以因子四; 对多个无线电发射机的缩放向量进行求和，以形成总向量; 将总矢量的参数除以因子四，并且使用所得到的旋转总向量来定义包括第一和第二坐标轴的复合坐标基准; 以及通过以下方式形成所述无线电接收机的二维位置的估计：将每个不确定椭圆的主轴和短轴投影到第一和第二坐标轴上，以便为每个轴形成一组投影分量 ; 将每个轴的投影分量相加，以便沿着每个轴形成总的不确定性; 对于每个不确定性椭圆，从相应的发射机加权值形成第一和第二坐标轴加权值，所述第一和第二坐标轴加权值被缩放，使得第一/第二坐标轴加权值随着沿着该第一/第二坐标轴的总不确定性增加而减小; 以及使用第一和第二坐标轴加权值以及以复合坐标为基础表示的多个无线电发射机的位置估计，通过加权质心来计算无线电接收机的位置。

140. 发明公开

EP2536033A2 A receiver 有权
标题翻译： Empfänger
公开(公告)号：EP2536033A2
公开(公告)日：2012-12-19
申请号：EP12157879.3
申请日：2012-03-02
申请人： Cambridge Silicon Radio Limited
发明人： Babitch, Daniel , Landmark, Joakim , Sheikholeslami, Behzad , Topham, Peter
IPC分类号： H04B1/18 , H04B1/00
CPC分类号： H04B1/18 , H03F1/52 , H03F3/195 , H03F2200/111 , H03F2200/294 , H04B1/0053 , H04B17/318
摘要： A receiver (50) comprising: an antenna (12) for receiving signals in a plurality of frequency ranges; a plurality of amplifiers (20, 22, 24), each of the plurality of amplifiers (20, 22, 24) being configured to amplify signals in one of the plurality of frequency ranges; a plurality of receive paths (54, 56, 58), each of the plurality of receive paths (54, 56, 58) connecting an output of the antenna (12) to an input of one of the plurality of amplifiers (22, 24, 26), wherein each of the plurality of receive paths (54, 56, 58) includes a power detector (112, 114, 116) for monitoring signal power in the receive path and a switch (70, 90, 110) which can be operated to activate or deactivate the receive path (54, 56, 58), wherein the switch (70, 90, 110) of each receive path (54, 56, 58) is operable to deactivate the receive path (54, 56, 58) if an overload condition is detected by the power detector (112, 114, 116) of that receive path (54, 56, 58).
摘要翻译：一种接收机（50），包括：用于接收多个频率范围内的信号的天线（12）多个放大器（20,22,24），所述多个放大器（20,22,24）中的每一个被配置为放大所述多个频率范围中的一个中的信号; 多个接收路径（54,56,58），所述多个接收路径（54,56,58）中的每一个将所述天线（12）的输出连接到所述多个放大器（22,24）中的一个的输入端，26），其中所述多个接收路径（54,56,58）中的每一个包括用于监视所述接收路径中的信号功率的功率检测器（112,114,116）和可以用于监视所述接收路径中的信号功率的开关（70,90,110）操作以激活或去激活接收路径（54,56,58），其中每个接收路径（54,56,58）的开关（70,90,110）可操作以停用接收路径（54,56,58）如果由所述接收路径（54,56,58）的功率检测器（112,114,116）检测到过载状况，则58。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式