公开(公告)号：US09612977B2

公开(公告)日：2017-04-04

申请号：US13183441

申请日：2011-07-15

Applicant: Alan Berenbaum ,  Richard Wahler

Inventor： Alan Berenbaum ,  Richard Wahler

IPC: G06F12/14 ,  G06F21/79 ,  G06F21/57 ,  G06F21/44 ,  H04L9/32

CPC classification number: G06F12/1408 ,  G06F12/1416 ,  G06F12/1466 ,  G06F21/44 ,  G06F21/57 ,  G06F21/79 ,  H04L9/3226

Abstract: A system to control access to a nonvolatile memory. The system includes an embedded controller, and a nonvolatile memory including a password. The embedded controller and the nonvolatile memory may be in communication with one another. The system further includes a lock register receiving and storing the password from the nonvolatile memory, and a key register receiving a key from the embedded controller and holding the key for one machine cycle. Further, the system includes a comparator connected between the lock register and the key register. The comparator compares the password received from the lock register and the key received from the key register. Output from the comparator is provided to an access filter connected between the embedded controller and the nonvolatile memory. Based on the comparator output, the access filter may grant or block access to the nonvolatile memory.

公开(公告)号：US09018896B2

公开(公告)日：2015-04-28

申请号：US13149529

申请日：2011-05-31

Applicant: Christopher Fischbach ,  Timothy J. Knowlton

Inventor： Christopher Fischbach ,  Timothy J. Knowlton

IPC: H02J7/00 ,  H02J7/04

CPC classification number: H02J7/0052 ,  H02J2007/0001 ,  H02J2007/0062

Abstract: A method and system for detecting a charging current supplied to a portable device through a USB charger. The method includes the steps of connecting a charging circuit to a portable device, allowing the portable device to draw charging current from the charging circuit, measuring the current drawn from the charging circuit, comparing the measured current with a threshold value, making one or more system level decisions regarding charging of the portable device if the detected charging current is below the threshold current.

Abstract translation: 一种用于通过USB充电器检测提供给便携式设备的充电电流的方法和系统。 该方法包括以下步骤：将充电电路连接到便携式设备，允许便携式设备从充电电路抽取充电电流，测量从充电电路抽取的电流，将测量的电流与阈值进行比较，从而使一个或多个 如果检测到的充电电流低于阈值电流，则关于便携式设备的充电的系统级决定。

公开(公告)号：US08982520B2

公开(公告)日：2015-03-17

申请号：US12364144

申请日：2009-02-02

Applicant: Alexei A. Predtetchenski ,  Hans L. Magnusson

Inventor： Alexei A. Predtetchenski ,  Hans L. Magnusson

IPC: H02H3/20 ,  G06F13/40

CPC classification number: G06F13/4072

Abstract: A system and method for efficient input/output (I/O) port overvoltage protection of a high-speed port. An interfacing system for connecting peripheral devices to a computing system comprises ports for conveying serial communications bi-directional signals and an overvoltage protection circuit. The protection circuit prevents an overvoltage condition on one port in response to an overvoltage event on a corresponding second port. In one embodiment, the interfacing system connects USB peripheral devices to an automotive infotainment system comprising an automotive battery potiential greater than a USB power supply. In addition, the overvoltage protection circuit is able to transmit signals between the two ports without signal attenuation defined by an industry standard specification such as Universal Serial Bus (USB) Implementers Forum (IF) eye pattern diagram test. The overvoltage protection circuit is configured to have a small footprint, and, therefore, does not utilize a power reference and comparator circuit.

Abstract translation: 一种用于高速端口高效输入/输出（I / O）端口过压保护的系统和方法。 用于将外围设备连接到计算系统的接口系统包括用于传送串行通信双向信号的端口和过压保护电路。 保护电路可以防止一个端口上的过电压状态响应相应的第二个端口上的过压事件。 在一个实施例中，接口系统将USB外围设备连接到包括大于USB电源的汽车电池容量的汽车信息娱乐系统。 此外，过电压保护电路能够在两个端口之间传输信号，而无需通过行业标准规范（例如通用串行总线（USB）实施者论坛（IF））眼图图测试定义的信号衰减。 过压保护电路被配置为具有小的占用面积，因此不使用功率基准和比较器电路。

公开(公告)号：US08745304B2

公开(公告)日：2014-06-03

申请号：US12787730

申请日：2010-05-26

Applicant: Jonathan Andersson ,  Jorge Enrique Muyshondt

Inventor： Jonathan Andersson ,  Jorge Enrique Muyshondt

IPC: G06F13/20

CPC classification number: G06F3/00 ,  G06F13/20

Abstract: A USB-to-SDIO bridge (UTSB) to efficiently transmit SD/SDIO commands in USB packets. The UTSB may allow the majority of the device drivers for a given SD/SDIO device to remain intact, requiring changes only in the lowest hardware adaptation layer to put a USB wrapper around native SD commands. These commands may be sent over USB-to-SD card reader devices that may include various embodiments of a UTSB, where they may be unwrapped and transmitted to the SD port as if the port were native to the host controller. Additionally, the SD/SDIO commands may be packaged into groups of commands, or transactions, to optimize performance. The host driver may instruct the UTSB bridge device to repeatedly read data from the SDIO device until a communications FIFO on the device is empty (corresponding to a termination condition), and return the collected data to the host.

Abstract translation: USB-to-SDIO网桥（UTSB）可在USB数据包中有效传输SD / SDIO命令。 UTSB可能允许给定SD / SDIO设备的大部分设备驱动程序保持不变，只需要在最低硬件适配层中进行更改，以便在本机SD命令周围放置USB包装。 这些命令可以通过可以包括UTSB的各种实施例的USB到SD读卡器设备发送，其中它们可以被解包并且被发送到SD端口，就好像端口是主机控制器的本地端口一样。 此外，SD / SDIO命令可以打包成一组命令或事务，以优化性能。 主机驱动程序可以指示UTSB桥接器件从SDIO设备重复读取数据，直到设备上的通信FIFO为空（对应于终止条件），并将收集的数据返回到主机。

公开(公告)号：US08698432B2

公开(公告)日：2014-04-15

申请号：US12872834

申请日：2010-08-31

Applicant: Lynn R. Kern

Inventor： Lynn R. Kern

IPC: H02P6/00

CPC classification number: H02P6/182 ,  H02P7/04

Abstract: A control method for a sensor-less, brushless, three-phase DC motor. The stator coil in the electromagnets inside the motor may be used as the inductive element through which a voltage regulator can regulate the current as a means of regulating the output voltage. The value of the control signal provided to the drivers controlling power to the coils may be calculated based on at least the rail voltage, as measured in real time. This allows for a wide variation of input voltages, while maintaining a relatively constant output power to the motor. In general, by taking into account the value of the rail voltage when determining the final value of the control signal that is applied to the stator coils, the maximum current through the stator coils may be scaled to the same magnitude current that would be expected to flow through the coils if the rail voltage were the rated (nominal) fan/motor voltage, even when the actual rail voltage is different, e.g. higher than the rated fan/motor voltage.

Abstract translation: 无传感器，无刷，三相直流电机的控制方法。 电动机内的电磁铁中的定子线圈可以用作电感元件，电压调节器可以通过电感元件调节电流作为调节输出电压的手段。 可以基于至少实时测量的轨道电压来计算提供给控制线圈功率的驱动器的控制信号的值。 这允许输入电压的宽的变化，同时保持对电动机的相对恒定的输出功率。 通常，通过考虑在确定施加到定子线圈的控制信号的最终值时轨道电压的值，通过定子线圈的最大电流可以被缩放到与预期相同的幅度电流 如果轨道电压是额定（标称）风扇/电机电压，即使实际轨道电压不同，也可以流过线圈，例如 高于额定风扇/电机电压。

公开(公告)号：US08633736B2

公开(公告)日：2014-01-21

申请号：US12789005

申请日：2010-05-27

Applicant: Paul F. Illegems

Inventor： Paul F. Illegems

IPC: H03K3/00

CPC classification number: H03K17/163 ,  H03K17/08104 ,  H03K19/00315 ,  H03K19/00361

Abstract: A driver circuit, that provides slew rate control of its output voltage, including a current generator, an output transistor, and optionally, a capacitor. The current generator has an input port, an output port and reference port. The output port couples to the gate of the output transistor. The capacitor couples between the gate and drain of the output transistor. The current generator controls a current IS flowing through the output port based on an input voltage at the input port. The current generator limits the absolute value of the current IS to be less than or equal to a maximum determined by a reference current Iref provided at the reference port. Modifications may be made to the driver circuit to limit the output current (e.g., as a function of the output voltage) and to make the slew rate limit independent of the gate-drain capacitance of the output transistor.

Abstract translation: 驱动器电路，其提供其输出电压的转换速率控制，包括电流发生器，输出晶体管和可选的电容器。 电流发生器具有输入端口，输出端口和参考端口。 输出端口耦合到输出晶体管的栅极。 电容器耦合在输出晶体管的栅极和漏极之间。 电流发生器基于输入端口处的输入电压来控制流过输出端口的电流IS。 电流发生器将当前IS的绝对值限制为小于或等于在参考端口处提供的参考电流Iref确定的最大值。 可以对驱动器电路进行修改以限制输出电流（例如，作为输出电压的函数），并且使转换速率限制与输出晶体管的栅 - 漏电容无关。

公开(公告)号：US08633662B2

公开(公告)日：2014-01-21

申请号：US12632495

申请日：2009-12-07

Applicant: Lynn R. Kern ,  James P. McFarland

Inventor： Lynn R. Kern ,  James P. McFarland

IPC: H03K5/00

CPC classification number: H02P6/14 ,  H02P2209/07

Abstract: A control method for a sensor-less, brushless, three-phase DC motor. The effects of commutation on the motor may be minimized using a sinusoidal current drive on each electromagnet. The “off” times and/or the “on” times of the drive transistors controlling the electromagnets in a full “H-bridge” configuration drive scheme may be delayed. By overlapping the drive signals to the electromagnets with respect to a commutation command, the effects of switching between electromagnets may be minimized. In addition, the “on” and “off” times may also be adjusted during the overlapping to further ensure that the coils continuously conduct current, and that the current does not change direction during the switching. The delays, and hence the overlap times of the coil drive signals may be dynamically controlled, for example by using digital timers, making the response predictable and easily controlled. The present position of the rotor in the motor may be determined using Hall sensors configured in the motor, or it may be determined using the un-energized electromagnets in a motor without Hall sensors.

Abstract translation: 无传感器，无刷，三相直流电机的控制方法。 可以使用每个电磁体上的正弦电流驱动来最小化电机上的换向效应。 在完全“H桥”配置驱动方案中控制电磁体的驱动晶体管的“关”时间和/或“开”时间可能会延迟。 通过将驱动信号相对于换向指令重叠到电磁体，可以使电磁铁之间切换的效果最小化。 此外，还可以在重叠期间调整“开”和“关”次，以进一步确保线圈连续导通电流，并且电流在切换期间不改变方向。 可以例如通过使用数字定时器来动态地控制线圈驱动信号的延迟，并因此线圈驱动信号的重叠时间，从而使响应可预测并且易于控制。 电动机中的转子的当前位置可以使用配置在电动机中的霍尔传感器来确定，或者可以使用没有霍尔传感器的电动机中的未通电的电磁体来确定。

公开(公告)号：US08631185B2

公开(公告)日：2014-01-14

申请号：US12883149

申请日：2010-09-15

Applicant: Morgan Monks

Inventor： Morgan Monks

IPC: G06F13/00

CPC classification number: G06F13/4004 ,  G06F2213/0042

Abstract: A system for high-speed data transfer within a portable device, such as, cell phone or a set-top box, which includes a memory medium and a processor. The system includes a first port for coupling to the processor, and a second port for coupling to the memory medium. Further, the system includes an embedded Universal Serial Bus (USB) host configured for receiving data transfer commands from the processor, and transferring data at high speed between a USB device on the processor and the memory medium. Moreover, a data path is provided between the embedded USB host and the first port.

Abstract translation: 一种用于在诸如手机或机顶盒的便携式设备内高速数据传输的系统，其包括存储介质和处理器。 该系统包括用于耦合到处理器的第一端口和用于耦合到存储介质的第二端口。 此外，该系统包括嵌入式通用串行总线（USB）主机，其配置用于从处理器接收数据传输命令，并且在处理器上的USB设备与存储介质之间高速传输数据。 此外，在嵌入式USB主机和第一端口之间提供数据路径。

公开(公告)号：US08624766B2

公开(公告)日：2014-01-07

申请号：US13307022

申请日：2011-11-30

Applicant: Srinivas K. Pulijala

Inventor： Srinivas K. Pulijala

IPC: H03M1/00

CPC classification number: H03G3/30 ,  H03G3/001 ,  H03M1/183

Abstract: Embodiments of the present disclosure provide a method and system for an auto-ranging analog-to-digital converter (ADC) for dynamically scaling inputs to an ADC. The auto-ranging ADC includes a dynamically configurable transistor arrangement for delivering a load current and a replica device for replicating the load current. A current sense resistor generates a replicated load voltage based on the replicated current. The ADC generates a digital value based on the replicated load voltage. The auto-ranging ADC also includes an auto-ranging controller for dynamically configuring the transistor arrangement based on the digital value to scale the inputs to the ADC.

Abstract translation: 本公开的实施例提供了一种用于动态地缩放对ADC的输入的自动量程模数转换器（ADC）的方法和系统。 自动量程ADC包括用于传送负载电流的动态可配置晶体管布置和用于复制负载电流的复制设备。 电流检测电阻基于复制电流产生复制的负载电压。 ADC根据复制的负载电压产生数字值。 自动量程ADC还包括一个自动量程控制器，用于根据数字值动态配置晶体管布置，以将输入缩放到ADC。

公开(公告)号：US08601203B2

公开(公告)日：2013-12-03

申请号：US12765233

申请日：2010-04-22

Applicant: Richard W. Holbrook ,  Jesse R. Lyles

Inventor： Richard W. Holbrook ,  Jesse R. Lyles

IPC: G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F9/44

CPC classification number: G06F13/4022 ,  G06F2213/0042

Abstract: System and method for configuring a portable device. The portable device includes a serial bus hub, one or more processors coupled to the serial bus hub via a serial bus, and a flash memory coupled to the serial bus hub via the serial bus. A degraded signal is received to a serial bus hub included in the portable device via a serial bus, where the degraded signal includes code to be written to the flash memory to initialize or update firmware for the portable device. The serial bus hub restores the degraded signal, thereby generating a restored signal, and sends the restored signal to at least one of the one or more processors to initialize or update the firmware in the flash memory for the portable device.

Abstract translation: 用于配置便携式设备的系统和方法。 便携式设备包括串行总线集线器，经由串行总线耦合到串行总线集线器的一个或多个处理器，以及经由串行总线耦合到串行总线集线器的闪存。 劣化的信号通过串行总线被接收到包括在便携式设备中的串行总线集线器，其中劣化信号包括要写入闪速存储器的代码以便初始化或更新便携式设备的固件。 串行总线集线器恢复降级的信号，从而产生恢复的信号，并将还原的信号发送到一个或多个处理器中的至少一个处理器，以初始化或更新便携式设备的闪速存储器中的固件。