Method and system for providing resonant frequency change compensation in a drive signal for a MEMS scanner
    12.
    发明授权
    Method and system for providing resonant frequency change compensation in a drive signal for a MEMS scanner 有权
    在MEMS扫描仪的驱动信号中提供谐振频率变化补偿的方法和系统

    公开(公告)号:US08331005B2

    公开(公告)日:2012-12-11

    申请号:US12766659

    申请日:2010-04-23

    CPC classification number: G09G3/02 G02B26/101 G09G3/025 G09G2320/041

    Abstract: A method for providing feed forward compensation in a drive signal for a rapid resonant frequency change due to a rapid LASER intensity change upon a micro-electro-mechanical system (MEMS) mirror and/or a surrounding MEMS structure in a MEMS scanner causing a mirror temperature change is provided. The method includes determining an intensity factor for at least one laser beam projected onto the MEMS scanner and adjusting a drive frequency of the drive signal based on the intensity factor. The intensity could represent a single intensity factor for multiple laser beams projected onto the MEMS scanner. The method could also include delaying the adjustment of the drive frequency to allow the resonant frequency change to take affect in the MEMS scanner. Delaying the adjustment could include delaying delivery of the intensity factor such that the intensity factor is provided coincident with the resonant frequency change of the MEMS scanner.

    Abstract translation: 一种用于在驱动信号中提供前馈补偿的方法,用于由于在微机电系统(MEMS)镜和/或MEMS扫描仪中的周围的MEMS结构导致镜子的快速激光强度变化而导致的快速谐振频率变化 提供温度变化。 该方法包括确定投影到MEMS扫描仪上的至少一个激光束的强度因子,并且基于强度因子调整驱动信号的驱动频率。 强度可以表示投射到MEMS扫描仪上的多个激光束的单一强度因子。 该方法还可以包括延迟驱动频率的调节,以允许谐振频率变化在MEMS扫描器中产生影响。 延迟调整可能包括延迟强度因子的传递,使得提供强度因子与MEMS扫描仪的谐振频率变化一致。

    Method and system for operating a MEMS scanner on a resonant mode frequency
    13.
    发明授权
    Method and system for operating a MEMS scanner on a resonant mode frequency 有权
    在谐振模式频率下操作MEMS扫描仪的方法和系统

    公开(公告)号:US07907019B1

    公开(公告)日:2011-03-15

    申请号:US12286615

    申请日:2008-10-01

    CPC classification number: H03L7/00 G02B26/085 H04N9/3135 H04N9/3173 H04N9/3194

    Abstract: A method for operating a micro-electro-mechanical system (MEMS) scanner on a resonant mode frequency is provided. The method includes generating a drive signal for a MEMS scanner. A sensor signal is received from the MEMS scanner. The drive signal is compared to the sensor signal. An accumulated correction signal is generated based on the comparison of the drive signal and the sensor signal. The drive signal for the MEMS scanner is then adjusted based on the accumulated correction signal.

    Abstract translation: 提供了一种用于在谐振模式频率上操作微电子机械系统(MEMS)扫描仪的方法。 该方法包括产生用于MEMS扫描器的驱动信号。 从MEMS扫描器接收传感器信号。 驱动信号与传感器信号进行比较。 基于驱动信号和传感器信号的比较,产生积累的校正信号。 然后,基于累积的校正信号来调整MEMS扫描器的驱动信号。

    METHOD AND SYSTEM FOR PROVIDING RESONANT FREQUENCY CHANGE COMPENSATION IN A DRIVE SIGNAL FOR A MEMS SCANNER
    14.
    发明申请
    METHOD AND SYSTEM FOR PROVIDING RESONANT FREQUENCY CHANGE COMPENSATION IN A DRIVE SIGNAL FOR A MEMS SCANNER 有权
    用于提供用于MEMS扫描仪的驱动信号中的谐振频率变化补偿的方法和系统

    公开(公告)号:US20100321750A1

    公开(公告)日:2010-12-23

    申请号:US12766659

    申请日:2010-04-23

    CPC classification number: G09G3/02 G02B26/101 G09G3/025 G09G2320/041

    Abstract: A method for providing feed forward compensation in a drive signal for a rapid resonant frequency change due to a rapid LASER intensity change upon a micro-electro-mechanical system (MEMS) mirror and/or a surrounding MEMS structure in a MEMS scanner causing a mirror temperature change is provided. The method includes determining an intensity factor for at least one laser beam projected onto the MEMS scanner and adjusting a drive frequency of the drive signal based on the intensity factor. The intensity could represent a single intensity factor for multiple laser beams projected onto the MEMS scanner. The method could also include delaying the adjustment of the drive frequency to allow the resonant frequency change to take affect in the MEMS scanner. Delaying the adjustment could include delaying delivery of the intensity factor such that the intensity factor is provided coincident with the resonant frequency change of the MEMS scanner.

    Abstract translation: 一种用于在驱动信号中提供前馈补偿的方法,用于由于在微机电系统(MEMS)镜和/或MEMS扫描仪中的周围的MEMS结构导致镜子的快速激光强度变化而导致的快速谐振频率变化 提供温度变化。 该方法包括确定投影到MEMS扫描仪上的至少一个激光束的强度因子,并且基于强度因子调整驱动信号的驱动频率。 强度可以表示投射到MEMS扫描仪上的多个激光束的单一强度因子。 该方法还可以包括延迟驱动频率的调节,以允许谐振频率变化在MEMS扫描器中产生影响。 延迟调整可能包括延迟强度因子的传递,使得提供强度因子与MEMS扫描仪的谐振频率变化一致。

    Multi-mode switching control circuit and method for improving light load efficiency in switching power supplies
    15.
    发明授权
    Multi-mode switching control circuit and method for improving light load efficiency in switching power supplies 有权
    多模切换控制电路及提高开关电源轻载效率的方法

    公开(公告)号:US07755342B2

    公开(公告)日:2010-07-13

    申请号:US11743468

    申请日:2007-05-02

    CPC classification number: H02M3/156 H02M2001/0032 Y02B70/16

    Abstract: A circuit for transitioning between a discontinuous and a fixed frequency continuous conduction mode (DCM) and (CCM) of a power converter having a driver receiving PWM signals and controlling a switching stage comprises a control switch and a sync switch connected at a common switching node for driving a load. The circuit including a PWM modulator for providing PWM signals; and a mode selector for receiving a duty cycle value, a preset switching period, and a duty cycle at a critical conduction point having a switching frequency equal to the preset switching period and providing an on-time of the control switch and a switching period to the PWM modulator, wherein if the duty cycle value is greater than the duty cycle at a critical conduction point, the PWM modulator will drive will provide the PWM signals to operate the switching stage in the CCM with constant-frequency duty cycle control, and if the duty cycle value is less than duty cycle at a critical conduction point, the PWM modulator will drive will provide the PWM signals to operate the switching stage in the DCM by turning off the sync switch when a load current becomes negative.

    Abstract translation: 用于在具有接收PWM信号并控制切换级的驱动器的功率转换器的不连续和固定频率连续传导模式(DCM)和(CCM)之间转换的电路包括控制开关和在公共交换节点处连接的同步开关 用于驱动负载。 该电路包括用于提供PWM信号的PWM调制器; 以及模式选择器,用于在具有等于预设开关周期的开关频率的临界导通点处接收占空比值,预设开关周期和占空比,并且提供控制开关的导通时间和开关周期 PWM调制器,其中如果占空比值大于临界导通点的占空比,则PWM调制器将驱动将提供PWM信号以恒定频率占空比控制在CCM中操作开关级,并且如果 占空比值小于临界导通点的占空比,当负载电流变为负时,PWM调制器驱动将通过关闭同步开关来提供PWM信号来操作DCM中的开关级。

    SYSTEMS AND METHODS FOR PROVIDING INFORMATION ASSOCIATED WITH PRODUCT SAMPLES
    16.
    发明申请
    SYSTEMS AND METHODS FOR PROVIDING INFORMATION ASSOCIATED WITH PRODUCT SAMPLES 审中-公开
    用于提供与产品样本相关的信息的系统和方法

    公开(公告)号:US20090287584A1

    公开(公告)日:2009-11-19

    申请号:US12464729

    申请日:2009-05-12

    CPC classification number: G06Q30/02 G06Q30/0601

    Abstract: Systems and methods are described for providing information associated with a particular product to a customer possessing a sample of the particular product. An identifier that is provided with the sample of the particular product and that uniquely identifies the product is received at a server. The information associated with the particular product is obtained based upon the received identifier. The information is provided from the server to the customer to thereby allow the customer to use the particular product that is in the customer's possession. The information provided may include safety information (e.g., a material safety data sheet (MSDS)) and usage information associated with the particular product. Such systems and methods may be particularly useful providing information relating to chemical components, such as those used in cosmetic, personal care or other industries.

    Abstract translation: 描述了系统和方法,用于向拥有特定产品样本的客户提供与特定产品相关联的信息。 在服务器处接收到具有特定产品的样本并且唯一地标识产品的标识符。 基于接收到的标识符获得与特定产品相关联的信息。 信息从服务器提供给客户,从而允许客户使用客户所拥有的特定产品。 所提供的信息可以包括与特定产品相关联的安全信息(例如,材料安全数据表(MSDS))和使用信息。 这样的系统和方法可能特别有用,提供与化妆品组件有关的信息,例如在化妆品,个人护理或其他工业中使用的那些。

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