公开(公告)号：US09357623B2

公开(公告)日：2016-05-31

申请号：US13557268

申请日：2012-07-25

Applicant: Siew Yong Chui

Inventor： Siew Yong Chui

IPC: H02H3/00 ,  H05B39/02 ,  H02H7/22 ,  H03K17/082 ,  H03K17/687

CPC classification number: H05B39/02 ,  H02H7/222 ,  H03K17/0822 ,  H03K2017/6875

Abstract: Aspects of the disclosure provide a circuit. The circuit includes a transistor configured to control energy entering the circuit from a power supply, a capacitor coupled with the transistor to store the energy that enters the circuit, and a protection circuit configured to counteract a voltage change of the transistor that is caused by a step voltage change in the power supply. In an embodiment, the protection circuit operates independent of the stored energy on the capacitor.

Abstract translation: 本公开的方面提供电路。 电路包括晶体管，被配置为控制从电源进入电路的能量，与晶体管耦合的电容器，以存储进入电路的能量;以及保护电路，被配置为抵消晶体管的电压变化， 电源中的步进电压变化。 在一个实施例中，保护电路独立于电容器上存储的能量而工作。

公开(公告)号：US09258863B2

公开(公告)日：2016-02-09

申请号：US13557765

申请日：2012-07-25

Applicant: Ravishanker Krishnamoorthy ,  Siew Yong Chui ,  Jun Li

Inventor： Ravishanker Krishnamoorthy ,  Siew Yong Chui ,  Jun Li

IPC: H05B33/08 ,  H05B37/02 ,  H05B39/08 ,  H05B41/392

CPC classification number: H05B33/0845 ,  H05B37/0272 ,  H05B39/08 ,  H05B41/392 ,  Y10T307/406

Abstract: Aspects of the disclosure provide a circuit. The circuit includes a control circuit and a return path circuit. The control circuit is configured to operate in response to a first conduction angle of a dimmer coupled to the circuit. The first conduction angle is adjusted to control an output power to a first device. The dimmer has a second conduction angle that is independent of the control of the output power to the first device. The return path circuit is configured to provide a return path to enable providing power to a second device in response to the second conduction angle.

Abstract translation: 本公开的方面提供电路。 电路包括控制电路和返回路径电路。 控制电路被配置为响应于耦合到电路的调光器的第一导通角而工作。 调整第一导通角以控制第一装置的输出功率。 调光器具有与控制第一器件的输出功率无关的第二导通角。 返回路径电路被配置为提供返回路径以使得能够响应于第二导通角度向第二设备提供电力。

公开(公告)号：US08339727B1

公开(公告)日：2012-12-25

申请号：US13349507

申请日：2012-01-12

Applicant: Jye Sheng Hong ,  Siew Yong Chui

Inventor： Jye Sheng Hong ,  Siew Yong Chui

IPC: G11B5/596

CPC classification number: G11B5/5526 ,  G11B5/5552

Abstract: The present disclosure includes systems and techniques relating to control of recording devices, such as disk drives. A described technique includes controlling a motor to actuate a head about a surface of a rotating recording medium, the motor being associated with first and second states of electric current, where a duration of the first state is longer than a duration of the second state; detecting an instance of the first state; and initiating, when the instance of the first state is detected, a switch from a first mode to a second mode to control the motor. The switch can be based on a condition of operation with respect to the rotating recording medium.

Abstract translation: 本公开包括与记录装置（例如磁盘驱动器）的控制有关的系统和技术。 所描述的技术包括控制电动机围绕旋转记录介质的表面致动磁头，所述电动机与第一状态和第二状态相关联，其中所述第一状态的持续时间长于所述第二状态的持续时间; 检测第一状态的实例; 并且当检测到第一状态的情况时，启动从第一模式切换到第二模式以控制马达。 开关可以基于相对于旋转记录介质的操作条件。

公开(公告)号：US08283882B1

公开(公告)日：2012-10-09

申请号：US12957218

申请日：2010-11-30

Applicant: Jye Sheng Hong ,  Siew Yong Chui

Inventor： Jye Sheng Hong ,  Siew Yong Chui

IPC: H02P7/00 ,  H02P7/29 ,  G05B11/28

CPC classification number: H02P25/034

Abstract: Analog control of the pulse width used to control the speed of a voice coil motor may be implemented using a “constant-current-charging-capacitor” configuration where the time needed to charge the capacitor is directly related to how far the actual motor speed is from the target speed. The BEMF voltage, indicative of motor speed, is sampled, and then stored in a storage capacitor, which is allowed to charge/discharge to a target voltage level. The time required to charge/discharge the capacitor to the target voltage is directly proportional to the difference between the BEMF voltage and the target voltage, and may be used directly as the pulse width (i.e., the charging time) in the PWM velocity control system. To avoid larger capacitors, a pulse multiplier circuit can be added, allowing charging/discharging the sampled voltage to the target voltage to be repeated by a number, N, of times.

Abstract translation: 用于控制音圈电机速度的脉冲宽度的模拟控制可以使用恒定电流充电电容器配置来实现，其中对电容器充电所需的时间直接与实际电动机速度距离 目标速度。 表示电机速度的BEMF电压被采样，然后存储在允许充电/放电到目标电压电平的存储电容器中。 将电容器充电/放电到目标电压所需的时间与BEMF电压和目标电压之间的差异成正比，可以直接用作PWM速度控制系统中的脉冲宽度（即充电时间） 。 为了避免较大的电容器，可以添加脉冲倍增器电路，从而使得采样电压对目标电压进行充电/放电以重复N次。

公开(公告)号：US08046185B1

公开(公告)日：2011-10-25

申请号：US12854737

申请日：2010-08-11

Applicant: Siew Yong Chui

Inventor： Siew Yong Chui

IPC: G01R35/00 ,  H03L7/00

CPC classification number: G11B5/54 ,  G11B5/59616

Abstract: Systems, methods, and apparatuses including computer program products for oscillator calibration include, in at least one implementation, a storage device including: a system including a first clock source, a second clock source, and a motor controller, the motor controller including calibration circuitry configured to calibrate the second clock source according to the first clock source in response to the first clock source operating as expected, and configured to provide to the system the calibrated second clock source as a timing reference instead of the first clock source as the timing reference in response to the first clock source not operating as expected, a head actuator configured to communicate with the motor controller, and a spindle disposed within the system.

Abstract translation: 包括用于振荡器校准的计算机程序产品的系统，方法和装置包括在至少一个实现中的存储设备，其包括：包括第一时钟源，第二时钟源和电动机控制器的系统，所述电动机控制器包括校准电路 被配置为响应于所述第一时钟源按预期的方式来校准所述第二时钟源，并且被配置为向所述系统提供校准的第二时钟源作为定时参考而不是所述第一时钟源作为所述定时参考 响应于不按预期的方式操作的第一时钟源，构造成与电动机控制器通信的头致动器和设置在系统内的心轴。

公开(公告)号：US07463066B1

公开(公告)日：2008-12-09

申请号：US11737085

申请日：2007-04-18

Applicant: Siew Yong Chui

Inventor： Siew Yong Chui

IPC: H03K19/094 ,  H03K19/0175

CPC classification number: H03K19/01721 ,  H03F1/301 ,  H03F3/347 ,  H03F3/505 ,  H03F2200/24 ,  H03F2203/5027 ,  H03K19/018521

Abstract: Circuits and methods are provided for producing a rail-to-rail output voltage. A circuit includes a level shifter and a source follower. The level shifter receives an input signal and applies a compensation voltage to the input signal relative to a voltage level of the input signal in steady-state. The source follower produces an output signal and, responsive to variations in the voltage level of the input signal, changes the voltage level of the output signal.

Abstract translation: 电路和方法用于产生轨到轨输出电压。 电路包括电平转换器和源极跟随器。 电平移位器接收输入信号，并相对于输入信号在稳态的电压电平向输入信号施加补偿电压。 源极跟随器产生输出信号，并且响应于输入信号的电压电平的变化，改变输出信号的电压电平。

公开(公告)号：US08987949B1

公开(公告)日：2015-03-24

申请号：US13219124

申请日：2011-08-26

Applicant: Siew Yong Chui

Inventor： Siew Yong Chui

IPC: H02J9/00

CPC classification number: G05F1/56 ,  G05F1/577 ,  Y10T307/406

Abstract: A linear regulator includes a first drive voltage output to drive an analog load, a second drive voltage output to drive a digital load, and a third output to provide a clean source of current. Circuit elements that produce the respective drive voltages may be isolated from each other. In addition, local feedback may be included to compensate for wide swings in circuit loading conditions in the analog load and in the digital load.

Abstract translation: 线性调节器包括用于驱动模拟负载的第一驱动电压输出，驱动数字负载的第二驱动电压输出，以及提供清洁电流源的第三输出。 产生相应驱动电压的电路元件可以彼此隔离。 此外，可以包括局部反馈以补偿模拟负载和数字负载中电路负载条件下的宽摆幅。

公开(公告)号：US08773110B2

公开(公告)日：2014-07-08

申请号：US13190782

申请日：2011-07-26

Applicant: Siew Yong Chui ,  Rajesh Tiruvuru

Inventor： Siew Yong Chui ,  Rajesh Tiruvuru

IPC: G01R19/00

CPC classification number: G01R19/2506 ,  G01R19/2513 ,  H02M1/4208 ,  Y02B70/126

Abstract: Aspects of the disclosure provide method and apparatus for detecting attributes of an input power supply. The method includes receiving a first signal generated based on a second signal that is predictive. The first signal includes a portion that substantially corresponds to the second signal. Further, the method includes detecting attributes of the portion of the first signal that substantially corresponds to the second signal, and determining attributes of the second signal based on the attributes of the portion of the first signal that substantially corresponds to the second signal.

Abstract translation: 本公开的方面提供了用于检测输入电源的属性的方法和装置。 该方法包括接收基于预测的第二信号产生的第一信号。 第一信号包括基本对应于第二信号的部分。 此外，该方法包括检测基本上对应于第二信号的第一信号的部分的属性，以及基于与第二信号基本对应的第一信号的部分的属性来确定第二信号的属性。

公开(公告)号：US08310389B1

公开(公告)日：2012-11-13

申请号：US13409294

申请日：2012-03-01

Applicant: Siew Yong Chui ,  Ravishanker Krishnamoorthy ,  Ying Tian Li

Inventor： Siew Yong Chui ,  Ravishanker Krishnamoorthy ,  Ying Tian Li

IPC: H03M1/36

CPC classification number: H02M3/157

Abstract: A system including is plurality of resistors, a plurality of comparators, and a decoder module. The resistors are connected in series between a supply voltage and a common voltage. A first input of each comparator is connected to a reference voltage. A second input of each comparator is respectively connected to one of a plurality of nodes between the resistors. The decoder module is configured to receive an output from each comparator and to output a plurality of bits based on the output of each comparator. Each of the plurality of bits indicates a different one of a plurality of voltage ranges. A present value of the supply voltage lies in one of the plurality of voltage ranges.

Abstract translation: 包括多个电阻器，多个比较器和解码器模块的系统。 电阻器在电源电压和公共电压之间串联连接。 每个比较器的第一个输入端连接到参考电压。 每个比较器的第二输入分别连接到电阻器之间的多个节点之一。 解码器模块被配置为接收来自每个比较器的输出并且基于每个比较器的输出来输出多个位。 多个比特中的每一个表示多个电压范围中的不同的一个。 电源电压的当前值位于多个电压范围中的一个。

公开(公告)号：US07839102B1

公开(公告)日：2010-11-23

申请号：US12493944

申请日：2009-06-29

Applicant: Sakti Pada Rana ,  Kuong Hoo, legal representative ,  Vishnu Kumar ,  Siew Yong Chui

Inventor： Sakti Pada Rana ,  Vishnu Kumar ,  Siew Yong Chui

IPC: H02P6/02 ,  H02P1/18

CPC classification number: G11B21/12

Abstract: A circuit system and process utilizes back electromotive force (BEMF) voltage to assist in safe power down of devices, such as the read/write head in from low factor disk drives or similar devices. The BEMF voltage from a motor device, such as a spindle motor utilized in a circuit using negative voltage to drive some switches, such as positive channel metal oxide semiconductor (“PMOS”) driver transistors, to reduce and/or effectively minimize the on-resistance of the switches while delivering the current from BEMF voltage of the motor to another device, such as a motor that retracts controls a read/write head.

Abstract translation: 电路系统和过程利用反电动势（BEMF）电压来帮助设备的安全断电，例如来自低因素盘驱动器或类似装置的读/写头。 来自电机装置的BEMF电压，例如在使用负电压驱动一些开关的电路中使用的主轴电动机，例如正通道金属氧化物半导体（“PMOS”）驱动器晶体管，以减少和/或有效地最小化在线， 将电流从电动机的BEMF电压传递到另一装置，例如缩回控制读/写头的电动机的开关电阻。