公开(公告)号：WO2011010150A2

公开(公告)日：2011-01-27

申请号：PCT/GB2010051198

申请日：2010-07-21

Applicant: WOLFSON MICROELECTRONICS PLC ,  MORE GRANT M ,  HAIPLIK HOLGER ,  KERJIWAL ABHAY

Inventor： MORE GRANT M ,  HAIPLIK HOLGER ,  KERJIWAL ABHAY

IPC: G06F1/26

CPC classification number: G06F1/26 ,  G06F9/4401

Abstract: This invention relates to apparatus and method for power management and especially to power management integrated circuits (PMICs). In one aspect the invention relates to a PMIC (102) having an internal non-volatile memory (NVM 115) for storing boot settings for the PMIC. The PMIC also has control circuitry (111) for detecting whether a source of boot settings is available, such as an NVM (202) external to the PMIC, and, if so, using any settings stored in the external source in preference to the relevant settings stored in the internal NVM. The external settings can thus override any internal settings, which is useful for fault diagnosis and/or development. In one aspect the PMIC may have programming circuitry (401) for automatically programming boot settings from an external source into the internal NVM (115).

Abstract translation: 本发明涉及用于功率管理的装置和方法，尤其涉及功率管理集成电路（PMIC）。 在一个方面，本发明涉及具有用于存储PMIC的引导设置的内部非易失性存储器（NVM 115）的PMIC（102）。 PMIC还具有用于检测引导设置源是否可用的控制电路（111），诸如PMIC外部的NVM（202），并且如果是这样的话，则优先使用存储在外部源中的任何设置 存储在内部NVM中的设置。 外部设置因此可以覆盖任何内部设置，这对于故障诊断和/或开发是有用的。 在一个方面中，PMIC可具有用于将来自外部源的引导设定自动编程到内部NVM（115）中的编程电路（401）。

公开(公告)号：WO2011010145A2

公开(公告)日：2011-01-27

申请号：PCT/GB2010/051192

申请日：2010-07-20

Applicant: WOLFSON MICROELECTRONICS PLC ,  MORE, Grant, M. ,  HAIPLIK, Holger

Inventor： MORE, Grant, M. ,  HAIPLIK, Holger

IPC: G06F1/32

CPC classification number: G06F1/3203 ,  Y10T307/469

Abstract: This invention relates to power management integrated circuits (PMICs) and related methods. In one aspect a PMIC which is operable to provide a plurality of PMIC power states is arranged to provide a predetermined delay before a power state transition. The delay is applied after receipt by the PMIC control circuitry of a power state transition command. Applying a delay allows time for the system powered by the PMIC to perform any necessary shut-down procedures and terminate active processes before power is removed, preventing corruption of the system. The delay is preferably configurable. The PMIC may also be arranged to control power converters which are external to the PMIC. In another aspect the PMIC has translation circuitry for providing the control settings of one power block, e.g. power converter, with any necessary modifications to be used by another power block. This means that only one set of control settings needs to be updated to change the output of both power blocks simultaneously.

Abstract translation: 本发明涉及功率管理集成电路（PMIC）及相关方法。 在一个方面，可操作以提供多个PMIC功率状态的PMIC被布置成在功率状态转换之前提供预定的延迟。 PMIC控制电路在接收到功率状态转换命令之后施加延迟。 应用延迟允许由PMIC供电的系统的时间执行任何必要的关闭过程，并在断电之前终止活动进程，防止系统损坏。 延迟优选是可配置的。 PMIC还可以被布置成控制PMIC外部的功率转换器。 在另一方面，PMIC具有翻译电路，用于提供一个功率块的控制设置，例如， 电源转换器，具有任何必要的修改以供另一个电源块使用。 这意味着只需要更新一组控制设置即可同时更改两个电源块的输出。

公开(公告)号：WO2010092406A2

公开(公告)日：2010-08-19

申请号：PCT/GB2010/050241

申请日：2010-02-12

Applicant: WOLFSON MICROELECTRONICS PLC ,  JENKINS, Colin, Robert ,  HOEKSTRA, Tsjerk, Hans ,  LAMING, Richard, Ian

Inventor： JENKINS, Colin, Robert ,  HOEKSTRA, Tsjerk, Hans ,  LAMING, Richard, Ian

CPC classification number: B81B3/0008 ,  B06B1/0292 ,  B81B2201/0257 ,  B81B2203/04 ,  H04R19/005 ,  H04R19/04

Abstract: A micro-electrical-mechanical system (MEMS) transducer comprises a layer of dielectric material having an electrode formed in the layer of dielectric material.A region of the layer of the dielectric material is adapted to provide a leakage path which, in use, removes unwanted charge from the layer of dielectric material.

Abstract translation: 微机电系统（MEMS）传感器包括具有形成在电介质材料层中的电极的介电材料层。电介质材料层的一个区域适于提供泄漏路径，其在使用中移除 不需要的电荷从介电材料层。

公开(公告)号：WO2009101445A9

公开(公告)日：2010-05-27

申请号：PCT/GB2009050142

申请日：2009-02-13

Applicant: HAIPLIK HOLGER ,  WOLFSON MICROELECTRONICS PLC ,  GRAHAM CLIVE ROBERT

Inventor： HAIPLIK HOLGER ,  GRAHAM CLIVE ROBERT

IPC: B29B17/02 ,  C08J11/06 ,  G06F21/72

CPC classification number: G06F21/725

Abstract: A real time clock apparatus (20) comprises a counter (23) which stores a count value, the count value representing a time signal. The counter (23) may be written, for example by a host processor (not shown), such that the time signal can be set to any desired value. The real time clock apparatus (20) comprises a check register (33) that stores a check value. The content of the check register (33) (i.e. the check value) is modified each time a write operation is performed on the counter (23). For example, the content of the check register (33) can be updated by a control signal (35) each time a write operation is performed on the counter (23). The check value stored in the check register (33) is used for determining whether a write operation performed on the counter (23) is an authorised write operation or an unauthorised write operation. The check value may be incremented each time a write operation is performed, replaced with a new random number each time a write operation is performed, or a combination of both.

Abstract translation: 实时时钟装置（20）包括存储计数值的计数器（23），计数值表示时间信号。 计数器（23）可以例如由主处理器（未示出）写入，使得时间信号可以被设置为任何期望值。 实时时钟装置（20）包括存储检查值的检查寄存器（33）。 每当对计数器（23）执行写入操作时，校验寄存器（33）的内容（即校验值）被修改。 例如，每当在计数器（23）上执行写入操作时，可以通过控制信号（35）更新检查寄存器（33）的内容。 存储在检查寄存器（33）中的检查值用于确定对计数器（23）执行的写入操作是否是授权写入操作或未经授权的写入操作。 每次执行写入操作时，可以增加检查值，每当执行写入操作时，用新的随机数替换检查值，或者两者的组合。

公开(公告)号：WO2009156756A2

公开(公告)日：2009-12-30

申请号：PCT/GB2009/050720

申请日：2009-06-24

Applicant: WOLFSON MICROELECTRONICS PLC ,  MAGRATH, Anthony James ,  GRAHAM, Clive Robert

Inventor： MAGRATH, Anthony James ,  GRAHAM, Clive Robert

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K2210/1053 ,  G10K2210/1081 ,  G10K2210/3027 ,  G10L21/0208 ,  G10L2021/02082 ,  G10L2021/02165 ,  H03H21/0012

Abstract: A noise cancellation system for an audio system such as a mobile phone handset, or a wireless phone headset has a first input for receiving a first audio signal from one or more microphone positioned to receive ambient noise, and a second input for receiving a second audio signal from a microphone positioned to detect the user?s speech, as well as a third input for receiving a third audio signal for example representing the speech of a person to whom the user is talking. A first noise cancellation block receives the first audio signal and generates a first noise cancellation signal, and this is combined with the third audio signal to form a first audio output signal. A second noise cancellation block receives at least a part of the first audio signal and said second audio signal and applying noise cancellation to generate a second audio output signal.

Abstract translation: 用于诸如移动电话听筒或无线电话耳机的音频系统的噪声消除系统具有用于从被定位成接收环境噪声的一个或多个麦克风接收第一音频信号的第一输入端和用于接收第二音频的第二输入端 来自定位成检测用户语音的麦克风的信号，以及用于接收第三音频信号的第三输入，例如表示用户正在说话的人的语音。 第一噪声消除块接收第一音频信号并产生第一噪声消除信号，并将其与第三音频信号组合以形成第一音频输出信号。 第二噪声消除块接收第一音频信号和所述第二音频信号的至少一部分并且施加噪声消除以产生第二音频输出信号。

公开(公告)号：WO2009083709A1

公开(公告)日：2009-07-09

申请号：PCT/GB2008/004258

申请日：2008-12-23

Applicant: WOLFSON MICROELECTRONICS PLC ,  LESSO, John, Paul

Inventor： LESSO, John, Paul

IPC: H03F3/185 ,  H03F1/02 ,  G05F3/08

CPC classification number: H03F1/0244 ,  H03F1/0255 ,  H03F1/52 ,  H03F3/185 ,  H03F2200/03 ,  H03F2200/102 ,  H03F2200/426 ,  H03F2200/507 ,  H03F2200/511

Abstract: An amplifier circuit comprises an amplifier for amplifying an input signal and outputting the amplified signal to an external device. A power supply provides a supply voltage to the amplifier. The nature or type of external device (for example line-load or headphones) is determined by measuring a parameter related to the supply voltage. The parameter may be the time taken for the supply voltage to fall or rise a predefined threshold value. Alternatively, the measured parameter may be a voltage drop or voltage rise over a predetermined period of time. Both of these parameters give an indication as to the rate of change of the supply voltage with time, which provides an indication of the nature of the load. Processing circuitry may be provided for calibrating the rate of change of the supply voltage with time, based on the input signal.

Abstract translation: 放大器电路包括用于放大输入信号并将放大的信号输出到外部设备的放大器。 电源为放大器提供电源电压。 通过测量与电源电压有关的参数来确定外部设备的性质或类型（例如线路负载或耳机）。 该参数可以是电源电压下降或上升预定阈值所花费的时间。 或者，测量的参数可以是在预定时间段内的电压降或电压上升。 这两个参数给出了电源电压随时间变化率的指示，这提供了负载性质的指示。 可以提供处理电路，用于基于输入信号来校准电源电压随时间的变化率。

公开(公告)号：WO2009081191A1

公开(公告)日：2009-07-02

申请号：PCT/GB2008/051187

申请日：2008-12-15

Applicant: WOLFSON MICROELECTRONICS PLC ,  CLEMOW, Richard

Inventor： CLEMOW, Richard

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3056

Abstract: There is provided a noise cancellation system, comprising: a voice input, for receiving a wanted signal; a noise input for receiving a detected signal representative of ambient noise; a signal processor, for generating a noise cancellation signal for addition to the wanted signal, the signal processor having an adjustable gain; and control circuitry, for determining a relationship between levels of the wanted signal and the detected signal, and for controlling the adjustable gain on the basis of the determined relationship.

Abstract translation: 提供了一种噪声消除系统，包括：语音输入，用于接收有用信号; 用于接收表示环境噪声的检测信号的噪声输入; 信号处理器，用于产生用于除去所需信号的噪声消除信号，所述信号处理器具有可调增益; 以及控制电路，用于确定有用信号的电平与检测到的信号之间的关系，并且用于基于所确定的关系来控制可调增益。

公开(公告)号：WO2009030933A1

公开(公告)日：2009-03-12

申请号：PCT/GB2008/003030

申请日：2008-09-08

Applicant: WOLFSON MICROELECTRONICS PLC ,  QUINN, Simon, Kenneth ,  HOWLETT, Andrew, James

Inventor： QUINN, Simon, Kenneth ,  HOWLETT, Andrew, James

IPC: H03M1/06 ,  H03M1/08 ,  H03M1/80 ,  H03M3/04

CPC classification number: H03M1/0614 ,  H03M1/0872 ,  H03M1/804 ,  H03M3/358 ,  H03M3/376 ,  H03M3/502

Abstract: A multi-bit digital to analogue converter is implemented by a switched-capacitor arrangement in which a reservoir capacitor (Cf) accumulates charge representing the desired analogue output signal (Vout+/Vout-). An array of further capacitors (C0-CN) correspond in number at least to the number of data bits (D0-DN) to be converted. The capacitors (Cf, C0-CN) are selectively interconnected with one another and with reference voltage sources (Vmid, Vdd, Vss) in a repetitive sequence of phases including (i) a sampling phase (P2) in which said further capacitors are connected (S3, S4) to reference voltages selected in accordance with the values of said data bits, (ii) an equalisation phase (P6a) in which said further capacitors are connected (S2) in parallel with one another without connecting them in parallel with the first capacitor, followed by (iii) a transfer phase (P6b) in which the parallel connected further capacitors are connected (S1, S5) in parallel with the first capacitor. The equalisation phase masks nonlinearities arising in switches (S2) and thereby improves harmonic distortion.

Abstract translation: 多位数模转换器由开关电容器布置实现，其中储存电容器（Cf）累积表示期望的模拟输出信号（Vout + / Vout-）的电荷。 另外的电容器（C0-CN）的数组至少与要转换的数据位数（D0-DN）相对应。 电容器（Cf，C0-CN）选择性地互相互连，并且以参考电压源（Vmid，Vdd，Vss）以相位重复的顺序相互连接，包括（i）其中所述另外的电容器被连接的采样相位（P2） （S3，S4），根据所述数据位的值选择参考电压，（ii）彼此并联连接所述另外的电容器（S2）的均衡相位（P6a），而不将它们与 第一电容器，之后是（iii）与第一电容器并联连接有并联的另外的电容器（S1，S5）的转移相位（P6b）。 均衡相屏蔽了开关（S2）中出现的非线性，从而改善了谐波失真。

公开(公告)号：WO2008139155A8

公开(公告)日：2009-02-19

申请号：PCT/GB2008001601

申请日：2008-05-08

Applicant: WOLFSON MICROELECTRONICS PLC ,  SIBBALD ALASTAIR

Inventor： SIBBALD ALASTAIR

IPC: G10K11/178 ,  H04R3/00

CPC classification number: G10K11/16 ,  G10K11/178 ,  G10K2210/1081 ,  H04M1/6066 ,  H04M1/7253 ,  H04R1/1041 ,  H04R1/1083 ,  H04R5/033 ,  H04R2420/05 ,  H04R2499/11

Abstract: Noise reduction circuitry for a communication apparatus can apply different noise reduction transfer functions, depending on whether a listening device is connected to the apparatus. If no listening device is connected, the noise reduction transfer function can be adapted for use with microphones (12) and speakers (28) that form an integral part of the communication apparatus, which may be a cellular telephone. If a listening device is connected, the noise reduction transfer function can be adapted for use with microphones (12) and speakers (28) that form a part of the listening device. This allows the noise reduction circuitry to provide improved noise reduction performance.

Abstract translation: 用于通信设备的降噪电路可以根据听音设备是否连接到该设备来应用不同的降噪传递功能。 如果没有连接听音装置，则降噪传递功能可适用于形成通信装置的组成部分的麦克风（12）和扬声器（28），扬声器可以是蜂窝电话。 如果连接了听音装置，则降噪传递功能可适用于构成听音装置一部分的麦克风（12）和扬声器（28）。 这允许降噪电路提供改进的降噪性能。

公开(公告)号：WO2009016401A1

公开(公告)日：2009-02-05

申请号：PCT/GB2008/050627

申请日：2008-07-25

Applicant: WOLFSON MICROELECTRONICS PLC ,  NOTMAN, Andrew

Inventor： NOTMAN, Andrew

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  H02M2001/009 ,  Y02B70/1466

Abstract: A DC-to-DC converter for using a single input supply to generate a plurality of power outputs at different voltages (Vout1, Vout2) using a single inductor (33) has an arrangement of switches (A - F) enabling the input voltage (Vin) to be connected across the inductor (33) in both the forward and reverse directions. This allows the inductor current to be increased or reduced rapidly if desired, enabling the converter to supply a high current to an output even if its voltage is close to the input voltage (Vin). This circuit may be used with a control regime in which power is supplied to an output during an inductor charge phase in which current flows from the input supply through the inductor (33) to the power output, followed by an inductor discharge phase in which current flows from ground through the inductor (33) to. the power output, the level of current in the inductor (33) at the end of the inductor discharge phase is stored, and, before the next inductor charge phase for the same output, a slew phase is provided in which the input supply is connected across the inductor in the forward or reverse direction, as appropriate, to bring the inductor current at the beginning of the inductor charge phase to be equal to the inductor current at the end of the previous inductor discharge phase for that power output. This arrangement helps to reduce crosstalk between power outputs, and to enable the converter to supply different.outputs having substantially different power requirements.

Abstract translation: 使用单个输入电源使用单个电感器（33）产生不同电压（Vout1，Vout2）的多个功率输出的DC-DC转换器具有能够使输入电压（A-F） Vin）在正向和反向方向上跨过电感器（33）连接。 如果需要，这允许电感电流迅速增加或降低，即使其电压接近输入电压（Vin），转换器也可以向输出端提供高电流。 该电路可以用于在电感器充电阶段期间向输出端供电的控制状态，其中电流从输入电源通过电感器（33）流入功率输出，随后是电感放电阶段，其中电流 从地面通过电感器（33）流到。 功率输出，电感放电阶段结束时电感器（33）中的电流电平被存储，并且在相同输出的下一个电感充电阶段之前，提供一个转换相位，其中输入电源被连接 在正向或反向方向上的电感器上，适当地将电感器充电阶段开始时的电感电流设置为等于该功率输出的前一个电感放电阶段结束时的电感电流。 这种布置有助于减少电力输出之间的串扰，并且使得转换器能够提供具有基本上不同功率需求的不同输出。