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    Devices, systems and processes for improving frequency measurements during reverberation periods for ultra-sonic transducers
    1.
    发明授权
    Devices, systems and processes for improving frequency measurements during reverberation periods for ultra-sonic transducers 有权

    公开(公告)号：US11759822B2

    公开(公告)日：2023-09-19

    申请号：US16867298

    申请日：2020-05-05

    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

    Inventor： Zdenek Axman ,  Tomas Suchy ,  Petr Kamenicky

    IPC: B06B1/02

    CPC classification number: B06B1/0215 ,  B06B2201/30 ,  B06B2201/55

    Abstract: Embodiments include a primary short circuit (PSC) coupled to a primary side of a transformer and a dampening element, coupled to a transducer coupled to a secondary side of the transformer, configured to dampen a received signal during a portion of a reverberation period. The PSC and the dampening element may be activated substantially simultaneously. Activation of the PSC circuit mitigates a parallel resonance otherwise arising, in part, in the transducer, but, increases the received signal by a DC shift voltage. The dampening element dampens the DC shift voltage. The received signal may be dampened prior to amplification of the received signal by an amplifier. The dampening facilitates earlier and more precise measurement, during the reverberation period, of at least one operating characteristic for the PAS sensor. Another embodiment prevents the DC shift voltage by selectively activating the PSC within a determined time of a zero-crossing of a given signal.

    LED controller and method therefor
    5.
    发明授权
    LED controller and method therefor 有权
    LED控制器及其方法

    公开(公告)号：US09095026B2

    公开(公告)日：2015-07-28

    申请号：US14559119

    申请日：2014-12-03

    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

    Inventor： Pavel Horsky ,  Petr Kamenicky

    IPC: H05B37/00 ,  H05B41/00 ,  H05B33/08 ,  H05B33/10

    CPC classification number: H05B33/0827 ,  H05B33/083 ,  H05B33/0845 ,  H05B33/10 ,  Y10T29/49117

    Abstract: In an embodiment, an LED controller is configured to form a charge transfer sequence to selectively enable LED transistors of a plurality of LED transistors that are configured for coupling in parallel with a plurality of LEDs. An embodiment may include that the LED controller is configured to sequentially couple a charge capacitor to a gate-to-source capacitor of each LED transistor of the plurality of LED transistors to one of charge or to refresh the gate-to-source capacitor of a respective LED transistor and to one of enable or re-enable the respective LED transistor wherein the gate-to-source capacitor is a parasitic gate-to-source capacitor of the LED transistor wherein the charge capacitor is sequentially coupled to the gate-to-source capacitor of each LED transistor.

    Abstract translation: 在一个实施例中，LED控制器被配置为形成电荷转移序列，以选择性地使多个LED晶体管的LED晶体管被配置为与多个LED并联耦合。 一个实施例可以包括：LED控制器被配置为将充电电容器顺序地耦合到多个LED晶体管中的每个LED晶体管的栅极到源极电容器之一，以充电或刷新栅极 - 源极电容器 相应的LED晶体管，并且使能或重新使能相应的LED晶体管之一，其中栅极 - 源极电容器是LED晶体管的寄生栅极 - 源极电容器，其中电荷电容器依次耦合到栅极 - 每个LED晶体管的源极电容。

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