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101. 发明公开

EP2309496A3 Adaptive audio encoder and decoder 有权
标题翻译：自适应音频编码器和解码器
公开(公告)号：EP2309496A3
公开(公告)日：2012-06-27
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： G10L19/14
CPC分类号： G10L19/22 , H04L1/0014 , H04L1/0041
摘要： An audio encoder capable of implementing a plurality of encoding functions, wherein an operations scheduler adjusts the order in which the encoding functions are applied. An adaptation controller adjusts the implementation of the encoding functions in response to feedback received by the adaptation controller during use. The adjustment may involve adapting encoding algorithms or selecting alternative encoding algorithms. The feedback may be received from internally of the encoder, for example from the currently implemented encoding functions, or from externally of the encoder. A corresponding decoder is also provided.

102. 发明公开

EP2406884A1 DIGITAL PHASE-LOCKED LOOP ARCHITECTURE 有权
标题翻译：数字锁相环路架构
公开(公告)号：EP2406884A1
公开(公告)日：2012-01-18
申请号：EP10713621.0
申请日：2010-04-07
申请人： Cambridge Silicon Radio Limited
发明人： SORNIN, Nicolas
IPC分类号： H03L7/081 , H03L7/091 , H03C3/09
CPC分类号： H03L7/081 , H03L7/091
摘要： A phase-locked loop circuit comprising: an oscillator (20) configured to generate an output signal; an input (25) for receiving a reference clock signal; a delay cell (26) configured to delay the reference clock signal to generate a delayed reference clock signal; a phase comparator (27) configured to generate a quantised signal indicative of the phase difference between the output signal and the delayed reference clock signal, an integrator (28) configured to integrate the quantised signal to form an integrated signal; a first feedback path (22) configured to control the phase and/or frequency of the oscillator in dependence on the integrated signal; and a second feedback path (23) configured to adjust the delay applied by the delay cell (26) in dependence on the integrated signal.

103. 发明公开

EP2351213A1 VARIABLE GAIN AMPLIFIER 有权
标题翻译：可变增益放大器
公开(公告)号：EP2351213A1
公开(公告)日：2011-08-03
申请号：EP09785632.2
申请日：2009-09-11
申请人： Cambridge Silicon Radio Limited
发明人： ZARE-HOSEINI, Hashem
IPC分类号： H03G1/00 , H03G5/00
CPC分类号： H03G1/0088 , H03G5/00
摘要： A variable gain amplifier includes an integrator having an input,an output and a feedback loop connected between the input and output, a plurality of input chains connected in parallel between the amplifier input and the input of the integrator, each input chain including a resistor and a first switch and a plurality of second switches, each second switch connected between an intermediate node between the resistor and first switch of a respective input chain and the feedback loop of the integrator, wherein the resistance of the resistors in the input chains is scaled by a scaling factor with respect to one another and the on-resistances of the first and second switches connected to each intermediate node are scaled by the corresponding scaling factor.

104. 发明授权

EP1844585B1 Detecting signals 有权
标题翻译：信号检测
公开(公告)号：EP1844585B1
公开(公告)日：2011-07-27
申请号：EP06709588.5
申请日：2006-01-30
申请人： Cambridge Silicon Radio Limited
发明人： WOOD, Peter
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04W16/14 , H04B1/715 , H04W24/00 , H04W80/00 , H04W84/12 , H04W84/18
摘要： A receiver device comprising: a frequency hopping radio receiver for operation according to a frequency hopping radio protocol and arranged to detect the presence of interference characteristic of a predetermined other radio protocol; and a user-alerting unit responsive to the receiver; the receiver device being configurable to actuate the user-alerting unit for alerting a user in response to the detection of interference characteristic of the other radio protocol.

105. 发明公开

EP2245748A1 POWER-SAVING RECEIVER 有权
标题翻译： ENERGIESPAREMPFÄNGER
公开(公告)号：EP2245748A1
公开(公告)日：2010-11-03
申请号：EP08871874.7
申请日：2008-11-19
申请人： Cambridge Silicon Radio Limited
发明人： SINGER, Steven, Mark
IPC分类号： H04B1/16
CPC分类号： H04W52/02 , H04W52/0229 , Y02D70/1222 , Y02D70/142 , Y02D70/144
摘要： A signal receiver capable of operating in two modes: a normal mode for reception and decoding of signals and a detection mode for detecting the presence of signals, the signal receiver having: a functional unit that can operate in two manners: a first manner having relatively low power consumption and relatively poor accuracy and a second manner having relatively high power consumption and relatively high accuracy, and a controller for causing the functional unit to operate in the first manner when the receiver is in its detection mode and in the second manner when the receiver is in its normal mode.

106. 发明公开

EP2203917A1 FAST SPECTRAL PARTITIONING FOR EFFICIENT ENCODING 有权
标题翻译： FAST谱分割FOR高效的编码
公开(公告)号：EP2203917A1
公开(公告)日：2010-07-07
申请号：EP08788772.5
申请日：2008-09-09
申请人： Cambridge Silicon Radio Limited
发明人： HARGREAVES, David , ZAVAREHEI, Esfandiar
IPC分类号： G10L19/02 , H04N7/26 , H03M7/40
CPC分类号： G10L19/0204 , G10L19/002
摘要： Methods of spectral partitioning which may be implemented in an encoder are described. The methods comprise determining an estimate of bit requirements for each of a plurality of spectral sub-bands. These estimates are then used to group the sub-bands into two or more regions by minimizing a cost function. This cost function is based on the estimates of bit requirements for each sub-band and the estimates may include estimates of code bit requirements and/or additional code bit requirements for each sub-band. These estimates may be determined in many different ways and a number of methods are described.

107. 发明公开

EP2188895A1 PHASE LOCKED LOOP 有权
标题翻译：锁相环
公开(公告)号：EP2188895A1
公开(公告)日：2010-05-26
申请号：EP08787328.7
申请日：2008-08-19
申请人： Cambridge Silicon Radio Limited
发明人： STORY, Michael , SORNIN, Nicolas
IPC分类号： H03L7/091
CPC分类号： H03L7/085 , H03C5/00 , H03L7/091 , H03L2207/50 , H04L27/361
摘要： A phase locked loop comprising: an oscillator for generating an output signal of a frequency that is dependent on an input to the oscillator; sampling means for generating a sequence of digital values representing the output of the oscillator at moments synchronised with a reference frequency; a difference unit for generating a feedback signal representing the difference between successive values in the sequence; and an integrator for integrating the difference between the feedback signal and a signal of a desired output frequency; the signal input to the oscillator being dependent on the output of the integrator.
摘要翻译：一种锁相环，包括：振荡器，用于产生取决于振荡器输入的频率的输出信号; 采样装置，用于产生代表振荡器在与参考频率同步的时刻的输出的数字值序列; 差分单元，用于生成表示序列中连续值之间的差的反馈信号; 以及积分器，用于对反馈信号与期望输出频率的信号之间的差进行积分; 输入到振荡器的信号取决于积分器的输出。

108. 发明公开

EP2080077A1 ADAPTIVE FEEDBACK CASCODE 审中-公开
标题翻译：具有自适应反馈级联
公开(公告)号：EP2080077A1
公开(公告)日：2009-07-22
申请号：EP07824455.5
申请日：2007-11-06
申请人： Cambridge Silicon Radio Limited
发明人： ZOLNHOFER, Jens Bertolt
IPC分类号： G05F3/26 , G05F1/575
CPC分类号： G05F3/262
摘要： A current mirror for generating a substantially identical current flow in two parallel current paths, each current path comprising a switching device and each switching device comprising first and second active terminals and a control terminal for controlling current flow between the first and second active terminals, the current mirror comprising a first switching device arranged such that its first active terminal is arranged to receive a first voltage, its second active terminal is arranged to receive a variable voltage that varies independently of the first voltage and its control terminal is arranged to receive a control voltage, a second switching device connected such that its first active terminal is arranged to receive the first voltage and its control terminal is arranged to receive the control voltage and a voltage control device connected to the second switching device such that an input of the voltage control device is connected to the second active terminal of the second switching device, the voltage control device being arranged to receive a control signal indicative of the variable voltage and to alter the voltage at its input terminal in dependence on the control signal such that the difference between the voltage across the active terminals of the second switching device and the voltage across the active terminals of the first switching device remains substantially constant.

109. 发明授权

EP1577898B1 Method for reading multiple bit ROM cell 有权
标题翻译：一种用于读取多ROM细胞的方法
公开(公告)号：EP1577898B1
公开(公告)日：2008-08-13
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

110. 发明公开

EP1859348A1 INSTALLING DRIVERS 审中-公开
标题翻译：安装驱动程序
公开(公告)号：EP1859348A1
公开(公告)日：2007-11-28
申请号：EP06709722.0
申请日：2006-02-13
申请人： Cambridge Silicon Radio Limited
发明人： LOWE, Chris , COLLIER, James, Digby, Yarlet
IPC分类号： G06F9/445
CPC分类号： G06F9/4415
摘要： A peripheral device having: an interface for connection to a host device; a memory for storing software for use by the host device for operating with the peripheral device; and a processor for controlling the operation of the device such that the device has two operating modes over the interface: a first mode in which it operates as a storage device storing the said software and a second mode in which it operates as a device for providing other functionality to a device connected to it via the interface by means of the software; the peripheral device being configured so that on connection of the interface to a host device it operates in the first mode and so that it subsequently operates in the second mode.

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