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    PROTECTION CIRCUIT AND METHOD
    81.
    发明申请
    PROTECTION CIRCUIT AND METHOD 审中-公开
    保护电路和方法

    公开(公告)号：WO2008007106A1

    公开(公告)日：2008-01-17

    申请号：PCT/GB2007/002623

    申请日：2007-07-13

    Applicant: WOLFSON MICROELECTRONICS PLC ,  STEELE, Colin ,  HEARNE, Catherine, Ann ,  SINGLETON, David, Paul

    Inventor： STEELE, Colin ,  HEARNE, Catherine, Ann ,  SINGLETON, David, Paul

    IPC: H05B33/08

    CPC classification number: H05B33/089 ,  H05B33/0818 ,  H05B33/0857 ,  Y02B20/341

    Abstract: A light source is protected by selectively coupling a shunt path in parallel with the light source, such that current is diverted away from the light source and through the shunt path. A detection circuit detects the current flowing in the shunt path when the shunt path is connected in parallel with the light source. A comparator determines whether the current flowing in the shunt path exceeds a predetermined threshold and, if so, prevents or limits the flow of current when the shunt path is disconnected from being in parallel with the light source. In this way, a current detector is provided for monitoring the flow of current in a shunt path, the current detector being configured to disable or limit the flow of current through a light source when a predetermined threshold is reached. This aspect of the invention has the advantage of enabling the current flowing through a light source to be controlled by monitoring the current in the shunt path rather than the path having the light source, thus enabling the maximum current to be controlled without potentially damaging the light source.

    Abstract translation: 通过选择性地耦合与光源平行的分流路径来保护光源，使得电流被转移离开光源并且通过分流路径。 当分路路径与光源并联连接时，检测电路检测在分流路径中流动的电流。 比较器确定在分流路径中流动的电流是否超过预定阈值，如果是，则当分流路径被断开以与光源平行时，防止或限制电流流动。 以这种方式，提供电流检测器用于监视分流路径中的电流流动，电流检测器被配置为当达到预定阈值时禁用或限制通过光源的电流。 本发明的这个方面具有的优点是能够通过监视分流路径中的电流来控制流过光源的电流，而不是具有光源的路径，从而能够控制最大电流而不会潜在地损害光 资源。

    MEMS DEVICE
    82.
    发明申请
    MEMS DEVICE 审中-公开
    MEMS器件

    公开(公告)号：WO2007096636A1

    公开(公告)日：2007-08-30

    申请号：PCT/GB2007/000636

    申请日：2007-02-23

    Applicant: WOLFSON MICROELECTRONICS PLC. ,  LAMING, Richard, Ian ,  TRAYNOR, Anthony

    Inventor： LAMING, Richard, Ian ,  TRAYNOR, Anthony

    IPC: B81C1/00

    CPC classification number: B81C1/00158 ,  B81B3/0027 ,  B81B2201/0257 ,  B81C1/00246 ,  B81C1/00904 ,  B81C2201/056 ,  G01L9/0073 ,  H04R3/005 ,  H04R19/005 ,  H04R19/04

    Abstract: A method of fabricating a micro-electrical-mechanical system (MEMS) apparatus on a substrate (10) comprises the steps of processing the substrate (10) so as to fabricate an electronic circuit (11 ); depositing a first electrode (15) that is operably coupled with the electronic circuit (11 ); depositing a membrane (16) so that it is mechanically coupled to the first electrode (15); applying a sacrificial layer (50); depositing a structural layer (18) and a second electrode (17) that is operably coupled with the electronic circuit (11 ) so that the sacrificial layer (50) is disposed between the membrane (16) and the structural layer (18) so as to form a preliminary structure; singulating the substrate (10); and removing the sacrificial layer (50) so as to form a MEMS structure, in which the step of singulating the substrate (10) is carried out before the step of removing the sacrificial layer (50).

    Abstract translation: 在基板（10）上制造微机电系统（MEMS）装置的方法包括以下步骤：处理基板（10）以制造电子电路（11）; 沉积与电子电路（11）可操作耦合的第一电极（15）; 沉积膜（16），使得其机械耦合到第一电极（15）; 施加牺牲层（50）; 沉积与电子电路（11）可操作地耦合的结构层（18）和第二电极（17），使得牺牲层（50）设置在膜（16）和结构层（18）之间，以便 形成初步结构; 单片基板（10）; 以及去除所述牺牲层以形成MEMS结构，其中在去除所述牺牲层（50）的步骤之前执行对所述衬底（10）进行单分割的步骤。

    FEEDBACK CONTROLLER FOR PWM AMPLIFIER
    83.
    发明申请
    FEEDBACK CONTROLLER FOR PWM AMPLIFIER 审中-公开
    PWM放大器的反馈控制器

    公开(公告)号：WO2007020404A9

    公开(公告)日：2007-06-14

    申请号：PCT/GB2006003014

    申请日：2006-08-11

    Applicant: WOLFSON MICROELECTRONICS PLC ,  MAGRATH ANTHONY JAMES ,  WESTLAKE JOHN

    Inventor： MAGRATH ANTHONY JAMES ,  WESTLAKE JOHN

    IPC: H03F3/217 ,  H03F1/32 ,  H03F1/34 ,  H03F3/30

    CPC classification number: H03F3/30 ,  H03F1/32 ,  H03F1/3217 ,  H03F1/34 ,  H03F3/217 ,  H03F3/2173 ,  H03F2200/351 ,  H03F2200/78

    Abstract: A feedback controller in a PWM amplifier comprises a signal input for receiving a pulse width modulated (PWM) input signal (Vin) whose duty cycle represents a desired analogue output signal. A feedback loop filter (518) generates a filtered error signal (Vint) comprising a filtered representation of differences between the input signal (Vin) and a feedback signal (Vfb). A comparator (520) compares the filtered error signal with a reference to generate a provisional PWM switching control signal (C) for controlling the PWM amplifier (500). A pulse conditioner (532) receives both the provisional PWM switching control signal (C) and the PWM input signal (X=Vin) and outputs to the amplifier (500) a conditioned PWM switching control signal (Y), modified in accordance with predetermined constraints in relation to the PWM input signal.

    Abstract translation: PWM放大器中的反馈控制器包括用于接收其占空比表示期望的模拟输出信号的脉宽调制（PWM）输入信号（Vin）的信号输入端。 反馈环路滤波器（518）生成包括输入信号（Vin）与反馈信号（Vfb）之间的差的滤波表示的滤波误差信号（Vint）。 比较器（520）将滤波后的误差信号与参考值进行比较以生成用于控制PWM放大器（500）的临时PWM切换控制信号（C）。 脉冲调节器（532）接收临时PWM开关控制信号（C）和PWM输入信号（X = Vin）并且向放大器（500）输出根据预定值修改的调节PWM开关控制信号（Y） 与PWM输入信号有关的限制。

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