公开(公告)号：US20160173116A1

公开(公告)日：2016-06-16

申请号：US14753036

申请日：2015-06-29

Applicant: PixArt Imaging Inc.

Inventor： Hsiang-Wei Hwang ,  Yung-Hung Chen ,  Han-Chi Liu

IPC: H03M1/10 ,  H03M1/12

CPC classification number: H03M1/1028 ,  H03M1/10 ,  H03M1/12 ,  H03M1/66

Abstract: A circuit calibrating method, applied to an ACS generating circuit, which comprises a plurality of ACS generating units and activates the ACS generating unit corresponding to different DCCs to generate difference ACSs. The circuit calibrating method comprises: (a) determining which one of the ACSs has a large difference from an ideal value thereof; (b) adjusting a number of the ACS generating units, which are activated by a DCC corresponding to the ACS acquired in the step (a), or a next stage of the DCC corresponding to the ACS acquired in the step (a); and (c) generating the ACS to a target circuit, according to the number of the ACS generating circuits adjusted in the step (b).

Abstract translation: 一种应用于ACS生成电路的电路校准方法，其包括多个ACS生成单元，并且激活对应于不同DCC的ACS生成单元以生成差异ACS。 电路校准方法包括：（a）确定ACS中的哪一个与其理想值有很大差异; （b）调整由对应于步骤（a）中获取的ACS的DCC或与在步骤（a）中获取的ACS对应的DCC的下一级激活的ACS生成单元的数量; 以及（c）根据步骤（b）中调整的ACS发生电路的数量，将目标电路产生到目标电路。

公开(公告)号：US09425812B2

公开(公告)日：2016-08-23

申请号：US14753036

申请日：2015-06-29

Applicant: PixArt Imaging Inc.

Inventor： Hsiang-Wei Hwang ,  Yung-Hung Chen ,  Han-Chi Liu

IPC: H03M1/10 ,  H03M1/12

CPC classification number: H03M1/1028 ,  H03M1/10 ,  H03M1/12 ,  H03M1/66

Abstract: A circuit calibrating method, applied to an ACS generating circuit, which comprises a plurality of ACS generating units and activates the ACS generating unit corresponding to different DCCs to generate difference ACSs. The circuit calibrating method comprises: (a) determining which one of the ACSs has a large difference from an ideal value thereof; (b) adjusting a number of the ACS generating units, which are activated by a DCC corresponding to the ACS acquired in the step (a), or a next stage of the DCC corresponding to the ACS acquired in the step (a); and (c) generating the ACS to a target circuit, according to the number of the ACS generating circuits adjusted in the step (b).

Abstract translation: 一种应用于ACS生成电路的电路校准方法，其包括多个ACS生成单元，并且激活对应于不同DCC的ACS生成单元以生成差异ACS。 电路校准方法包括：（a）确定ACS中的哪一个与其理想值有很大差异; （b）调整由对应于步骤（a）中获取的ACS的DCC或与在步骤（a）中获取的ACS对应的DCC的下一级激活的ACS生成单元的数量; 以及（c）根据步骤（b）中调整的ACS发生电路的数量，将目标电路产生到目标电路。

公开(公告)号：US09048041B2

公开(公告)日：2015-06-02

申请号：US14452096

申请日：2014-08-05

Applicant: PIXART IMAGING INC.

Inventor： Yung-Hung Chen

IPC: H03K5/153 ,  H01H9/54 ,  H03K5/1254

CPC classification number: H01H9/54 ,  H03K5/1254

Abstract: A key press detecting circuit and method detect the status of multiple keys through a single pin. In an embodiment, a constant current is provided to apply to a key module through a single pin, to generate a voltage at the single pin that is related to the equivalent resistance of the key module observed from the single pin, and the voltage of the single pin is compared with a set of reference values to identify the status of the plurality of keys. In another embodiment, a variable current is provided to apply to a key module through a single pin in such a way that the variable current is adjusted to maintain a constant voltage at the single pin, and the variable current is compared with a set of reference values to identify the status of the plurality of keys.

公开(公告)号：US09007097B2

公开(公告)日：2015-04-14

申请号：US13889474

申请日：2013-05-08

Applicant: Pixart Imaging Inc.

Inventor： Yung-Hung Chen

IPC: H03K5/153 ,  H01H9/54 ,  H03K5/1254

CPC classification number: H01H9/54 ,  H03K5/1254

Abstract: A key press detecting circuit and method detect the status of multiple keys through a single pin. In an embodiment, a constant current is provided to apply to a key module through a single pin, to generate a voltage at the single pin that is related to the equivalent resistance of the key module observed from the single pin, and the voltage of the single pin is compared with a set of reference values to identify the status of the plurality of keys. In another embodiment, a variable current is provided to apply to a key module through a single pin in such a way that the variable current is adjusted to maintain a constant voltage at the single pin, and the variable current is compared with a set of reference values to identify the status of the plurality of keys.

Abstract translation: 按键检测电路和方法通过单个引脚检测多个键的状态。 在一个实施例中，提供恒定电流以通过单个引脚施加到键模块，以在单个引脚处产生与从单个引脚观察到的关键模块的等效电阻相关的电压，以及 将单引脚与一组参考值进行比较，以识别多个键的状态。 在另一个实施例中，提供可变电流以通过单个引脚施加到键模块，使得调节可变电流以在单个引脚处保持恒定的电压，并将可变电流与一组参考值进行比较 用于识别多个键的状态的值。