公开(公告)号：US20080144918A1

公开(公告)日：2008-06-19

申请号：US11859101

申请日：2007-09-21

Applicant: Kan Li ,  Tara MacDougall ,  David Sloan

Inventor： Kan Li ,  Tara MacDougall ,  David Sloan

IPC: G06K9/00

CPC classification number: G01N21/954 ,  B21C51/00 ,  G01N2021/8918 ,  G01N2201/0626 ,  G01N2201/0634

Abstract: A system and method are provided for detecting extraneous material, often referred to as scarf, in the interior of a tubular steel product. The system is arranged to illuminate one end of the tube as it passes through the field of view of an imaging system, preferably a Smart Camera. The camera obtains images and processes the images to determine if scarf is present in the interior of the tube. Preferably a processor determines the percentage of dark pixels in the interior of the tube as detected in the image and if a predetermined threshold is met or exceeded, the tube fails. A blob sensor is also preferably used to avoid false positives where the dark pixels do not have a certain amount of connectivity.

Abstract translation: 提供了一种系统和方法，用于检测管状钢产品内部的外来材料（通常称为围巾）。 该系统被布置成当管通过成像系统（优选智能相机）的视野时照亮管的一端。 照相机获取图像并处理图像以确定围绕在管内部是否存在。 优选地，处理器确定在图像中检测到的管内部的暗像素的百分比，并且如果满足或超过预定阈值，则管失效。 还优选使用斑点传感器来避免误差，其中暗像素不具有一定量的连通性。

公开(公告)号：US08146814B2

公开(公告)日：2012-04-03

申请号：US12756156

申请日：2010-04-07

Applicant: Robert Eric Mueller ,  Aly Shivji ,  Kan Li

Inventor： Robert Eric Mueller ,  Aly Shivji ,  Kan Li

IPC: G06K7/10 ,  G07F19/00 ,  G06Q30/00 ,  G06Q90/00

CPC classification number: G06T7/0004 ,  G06K7/10811 ,  G06K2017/0051 ,  G06Q10/087 ,  G06T2207/30164

Abstract: In general terms, the present invention provides a method of automatically scanning an inventory field to allow the selection of a desired item for retrieval. A camera is positioned in the crane trolley located above the field. The camera continuously performs a scan of the field displaying an image to the operator of the items being scanned. This real-time image allows the operator to distinguish between items scanned in the field. The operator can subsequently choose the desired item triggering the camera system to automatically capture desired information from the item which is in turn communicated to an inventory control system. The camera system mitigates the requirement of a second individual to communicate information between the field and the operator.

Abstract translation: 一般来说，本发明提供一种自动扫描库存字段以允许选择所需物品进行检索的方法。 相机位于场上方的起重机手推车中。 照相机连续地对被扫描物品的操作者执行向显示图像的场的扫描。 该实时图像允许操作者区分在现场扫描的物品。 操作员随后可以选择触发相机系统的所需物品，以自动从所述物品中捕获所需的信息，该物品又传送到库存控制系统。 相机系统减轻了第二个人在场和操作者之间传递信息的要求。

公开(公告)号：US07804658B1

公开(公告)日：2010-09-28

申请号：US11899897

申请日：2007-09-06

Applicant: Kan Li

Inventor： Kan Li

IPC: G11B5/03

CPC classification number: G11B5/3903 ,  G11B2005/0016

Abstract: An RMR is biased with constant power. Voltages are applied across at least two variable resistors, which are coupled on opposing ends of the RMR, to establish a current to the RMR, wherein the current is based on the voltages and on resistance values of the at least two variable resistors. A voltage corresponding to the established current of the RMR is amplified. The amplified voltage is compared to a reference voltage, wherein the reference voltage is based on a target power for the RMR. The resistance values of the at least two variable resistors are modified so that the amplified voltage approaches the reference voltage. Modifying the resistance values of the at least two variable resistors in this manner is seen to bias the RMR with constant power, since the reference voltage is based on a target power for the RMR.

Abstract translation: RMR以恒定功率偏置。 电压施加在至少两个可变电阻器上，其耦合在RMR的相对端上，以建立到RMR的电流，其中电流基于至少两个可变电阻器的电压和导通电阻值。 对应于RMR建立的电流的电压被放大。 将放大的电压与参考电压进行比较，其中参考电压基于用于RMR的目标功率。 改变至少两个可变电阻器的电阻值，使得放大的电压接近参考电压。 以这种方式修改至少两个可变电阻器的电阻值被认为是以恒定功率偏置RMR，因为参考电压基于用于RMR的目标功率。

公开(公告)号：US07733163B1

公开(公告)日：2010-06-08

申请号：US11931508

申请日：2007-10-31

Applicant: Kan Li

Inventor： Kan Li

IPC: G05F1/10

CPC classification number: G01R27/14 ,  G01R35/005

Abstract: A compensation device that can include a bias-able device, a bias circuit that provides the bias-able device with a bias current, a signal conditioner selectively coupled to the bias-able device, and an emulator. The signal conditioner and emulator can divert current from the bias-able device in an operational and calibration mode, respectively. In calibration mode, the emulator generates a compensation current that is combined with a sense current so that the sense current equals the bias current.

Abstract translation: 一种补偿装置，其可以包括可偏置装置，向偏置电路提供偏置电流的偏置电路，选择性地耦合到可偏置装置的信号调节器和仿真器。 信号调节器和仿真器可以分别在可操作和校准模式下从偏置器件转移电流。 在校准模式下，仿真器产生与感测电流组合的补偿电流，使感测电流等于偏置电流。

公开(公告)号：US07656601B1

公开(公告)日：2010-02-02

申请号：US11975568

申请日：2007-10-19

Applicant: Kan Li

Inventor： Kan Li

IPC: G11B5/03

CPC classification number: G11B5/09 ,  G11B2005/0018

Abstract: A circuit for measuring resistance of a magnetoresistive head. First and second current biasing circuits are respectively coupled to opposite sides of the head. The first biasing circuit includes a first resistance, and the second biasing circuit includes a second resistance. First and second current mirrors are respectively coupled to the first and second biasing circuits. A current leg is coupled to the current mirrors. The current mirrors drive current in the resistances so that a first voltage across the first resistance is substantially equal and opposite to a second voltage across the second resistance. The biasing circuits bias current through the head such that a voltage on the first side of the head is close to the first voltage and a voltage on the second side of the head is close to the second voltage, so that the common mode voltage of the head will be close to zero.

Abstract translation: 用于测量磁阻头的电阻的电路。 第一和第二电流偏置电路分别耦合到头部的相对侧。 第一偏置电路包括第一电阻，第二偏置电路包括第二电阻。 第一和第二电流镜分别耦合到第一和第二偏置电路。 当前的支路耦合到电流镜。 电流镜在电阻中驱动电流，使得跨越第一电阻的第一电压基本上等于并跨过第二电阻与第二电压相反。 偏置电路通过头部偏置电流，使得头部第一侧上的电压接近第一电压，并且头部第二侧上的电压接近第二电压，使得 头将接近零。

公开(公告)号：US20120325907A1

公开(公告)日：2012-12-27

申请号：US13337198

申请日：2011-12-26

Applicant: Robert Eric Mueller ,  Aly Shivji ,  Kan Li

Inventor： Robert Eric Mueller ,  Aly Shivji ,  Kan Li

IPC: G06Q90/00

CPC classification number: G06T7/0004 ,  G06K7/10811 ,  G06Q10/087 ,  G06T2207/30164

Abstract: In general terms, the present invention provides a method of automatically scanning an inventory field to allow the selection of a desired item for retrieval. A camera is positioned in the crane trolley located above the field. The camera continuously performs a scan of the field displaying an image to the operator of the items being scanned. This real-time image allows the operator to distinguish between items scanned in the field. The operator can subsequently choose the desired item triggering the camera system to automatically capture desired information from the item which is in turn communicated to an inventory control system. The camera system mitigates the requirement of a second individual to communicate information between the field and the operator.

Abstract translation: 一般来说，本发明提供一种自动扫描库存字段以允许选择所需物品进行检索的方法。 相机位于场上方的起重机手推车中。 照相机连续地对被扫描物品的操作者执行向显示图像的场的扫描。 该实时图像允许操作者区分在现场扫描的物品。 操作员随后可以选择触发相机系统的所需物品，以自动从所述物品中捕获所需的信息，该物品又传送到库存控制系统。 相机系统减轻了第二个人在场和操作者之间传递信息的要求。

公开(公告)号：US20100282842A1

公开(公告)日：2010-11-11

申请号：US12756156

申请日：2010-04-07

Applicant: Robert Eric Mueller ,  Aly Shivji ,  Kan Li

Inventor： Robert Eric Mueller ,  Aly Shivji ,  Kan Li

IPC: G06F19/00 ,  G06K7/10

CPC classification number: G06T7/0004 ,  G06K7/10811 ,  G06K2017/0051 ,  G06Q10/087 ,  G06T2207/30164

Abstract: In general terms, the present invention provides a method of automatically scanning an inventory field to allow the selection of a desired item for retrieval. A camera is positioned in the crane trolley located above the field. The camera continuously performs a scan of the field displaying an image to the operator of the items being scanned. This real-time image allows the operator to distinguish between items scanned in the field. The operator can subsequently choose the desired item triggering the camera system to automatically capture desired information from the item which is in turn communicated to an inventory control system. The camera system mitigates the requirement of a second individual to communicate information between the field and the operator.

Abstract translation: 一般来说，本发明提供一种自动扫描库存字段以允许选择所需物品进行检索的方法。 相机位于场上方的起重机手推车中。 照相机连续地对被扫描物品的操作者执行向显示图像的场的扫描。 该实时图像允许操作者区分在现场扫描的物品。 操作员随后可以选择触发相机系统的所需物品，以自动从所述物品中捕获所需的信息，该物品又传送到库存控制系统。 相机系统减轻了第二个人在场和操作者之间传递信息的要求。

公开(公告)号：US07741900B1

公开(公告)日：2010-06-22

申请号：US11931422

申请日：2007-10-31

Applicant: Kan Li

Inventor： Kan Li

IPC: G05F1/575 ,  G05F1/46

CPC classification number: G01R35/005 ,  G01R27/14

Abstract: A biasing device can supply a bias voltage to bias-able element by coupling a bias circuit to the bias-able element, coupling a state adjusting device to the biasing circuit, configuring the state adjusting device to 1) increase an initial biasing voltage by a first amount when an intermediate voltage threshold exceeds a voltage drop across the bias-able element and 2) increment the increased initial bias voltage by a second amount, where the second amount is a fraction of the first amount, until the voltage drop across the bias-able element substantially equals a predetermined bias voltage. The bias circuit of the biasing device can include a variable resistance, which is controlled by the state adjusting device and configured to vary the biasing voltage, in series with the bias-able element. The variable resistance can include a first variable resistance coupled in series to a first terminal of the bias-able element and a second variable resistance coupled in series to a second terminal of the bias-able element.

Abstract translation: 偏置装置可以通过将偏置电路耦合到可偏置元件来将偏置电压提供给可偏置元件，将状态调整装置耦合到偏置电路，将状态调整装置配置为1）将初始偏置电压增加一个 当中间电压阈值超过可偏置元件上的电压降时的第一量，以及2）将增加的初始偏置电压增加第二量，其中第二量是第一量的一部分，直到跨越偏置的电压降 该元件基本上等于预定的偏置电压。 偏置装置的偏置电路可以包括可变电阻，其由状态调整装置控制并且被配置为与偏置元件串联地改变偏置电压。 可变电阻可以包括串联耦合到可偏置元件的第一端子的第一可变电阻器和与可偏置元件的第二端子串联耦合的第二可变电阻器。

公开(公告)号：US07688051B1

公开(公告)日：2010-03-30

申请号：US11881457

申请日：2007-07-27

Applicant: Kan Li ,  Kee Hian Tan

Inventor： Kan Li ,  Kee Hian Tan

IPC: G05F1/00

CPC classification number: G05F1/56

Abstract: A linear regulator for outputting a regulated voltage with improved rejection of high frequency components in the power supply. The linear regulator includes an op-amp connected in a linear feedback loop to drive first and second current legs based on a voltage reference. An output driver includes a load capacitance across which the regulated voltage is output, and further includes a ratio-driven current mirror having a mirror ratio defined by relative sizes of active devices in the first and second current legs, as compared with relative sizes of active devices in the output driver. Because the output driver and its load capacitance are provided outside the linear feedback loop, large values for the load capacitance can be selected without destabilization of the feedback loop. Thus, the value of the load capacitance can be chosen at any value according to frequency rejection requirements.

Abstract translation: 用于输出调节电压的线性稳压器，其具有改善的对电源中的高频分量的抑制。 线性调节器包括连接在线性反馈环路中的运算放大器，以基于电压参考来驱动第一和第二电流支路。 输出驱动器包括输出调节电压的负载电容，并且还包括比率驱动电流镜，其具有由第一和第二电流支路中的有源器件的相对大小限定的镜面比，与活动的相对大小相比 输出驱动程序中的设备。 由于输出驱动器及其负载电容在线性反馈回路外部提供，所以可以选择大的负载电容值，而不会使反馈环路不稳定。 因此，负载电容的值可以根据频率抑制要求选择在任何值。

公开(公告)号：US07564394B1

公开(公告)日：2009-07-21

申请号：US11890732

申请日：2007-08-07

Applicant: Kan Li

Inventor： Kan Li

IPC: H03M1/12

CPC classification number: H03M1/124 ,  G01R19/2509 ,  H03M1/08 ,  H03M1/12

Abstract: A buffer for the input to an A/D converter operates in two stages. During the first stage, the input is not provided directly to the A/D converter; rather, a buffered output which corresponds to the input is provided to the A/D converter so as to pre-charge the sampling capacitor of the A/D converter to a value that is substantially close to the input. In the second stage, the input is provided directly to the A/D converter, which charges its sampling capacitor to the value of the input. Because the sampling capacitor is pre-charged to a value that is substantially close to the input, and because the sampling capacitor is charged to this value through a buffer, reflections back into the input which otherwise might have been caused by a difference between the value stored on the sampling capacitor and the input are largely avoided.

Abstract translation: 用于输入到A / D转换器的缓冲器分两个阶段工作。 在第一阶段，输入不直接提供给A / D转换器; 相应地，将对应于输入的缓冲输出提供给A / D转换器，以便将A / D转换器的采样电容器预充电到基本上接近输入的值。 在第二阶段，输入直接提供给A / D转换器，A / D转换器将其采样电容器充电到输入值。 因为采样电容器被预充电到基本上接近输入的值，并且由于采样电容器通过缓冲器被充电到该值，所以反射回到输入端，否则可能是由值之间的差异引起的 存储在采样电容器上，并且输入被大大地避免。