公开(公告)号：US20150303903A1

公开(公告)日：2015-10-22

申请号：US14255400

申请日：2014-04-17

Applicant: STMICROELECTRONICS, INC.

Inventor： Felix Kim ,  Mark A. Lysinger ,  Scott V. Ho

IPC: H03K5/003

CPC classification number: H03K5/003 ,  H03F1/30 ,  H03F2200/375 ,  H03G1/0088 ,  H03G3/30

Abstract: Gain offset and voltage offset compensation for a controllable gain element of a circuit is effected in response to a gain offset value and voltage offset value. A current operating condition of the circuit is sensed and compared to a nominal operating condition. If the current operating condition is outside the nominal operating condition by more than a threshold, a calibration operation to set the gain and voltage offset values is performed. The gain offset value is selected as a function of the sensed current operating condition. With respect to the voltage offset, differential input terminals of the controllable gain element are shunted and the output is measured. The measured output value of the controllable gain element is applied as the voltage offset value. The operating conditions at issue may be one or more of supply voltage and temperature.

Abstract translation: 响应于增益偏移值和电压偏移值来实现电路的可控增益元件的增益偏移和电压偏移补偿。 检测电路的当前工作状态并将其与标称工作条件进行比较。 如果当前工作条件超出标称工作状态超过阈值，则执行设置增益和电压偏移值的校准操作。 选择增益偏移值作为感测到的当前操作条件的函数。 关于电压偏移，可控增益元件的差分输入端子被分流并且测量输出。 可控增益元件的测量输出值被应用为电压偏移值。 所讨论的操作条件可以是电源电压和温度中的一个或多个。

公开(公告)号：US10466503B2

公开(公告)日：2019-11-05

申请号：US16440008

申请日：2019-06-13

Applicant: STMicroelectronics, Inc.

Inventor： Chih-Hung Tai ,  Felix Kim ,  Mark A. Lysinger

IPC: G02B27/64

Abstract: Various embodiments provide an optical image stabilization circuit that synchronizes its gyroscope and drive circuit using gyroscope data ready signals and gyroscope reset signals. In response to a gyroscope data ready signal, the optical image stabilization circuit synchronously obtains position measurements of a camera lens when power drive signals are not transitioning from one power level to another power level, and synchronously transitions the power drive signals simultaneously with gyroscope reset signals. By synchronizing the gyroscope and the drive circuit, the gyroscope and other onboard sensing circuits are isolated from noise generated by the drive circuit.

公开(公告)号：US09952445B2

公开(公告)日：2018-04-24

申请号：US14920249

申请日：2015-10-22

Applicant: STMicroelectronics, Inc.

Inventor： Chih-Hung Tai ,  Felix Kim ,  Mark A. Lysinger

IPC: G02B27/64

CPC classification number: G02B27/646

Abstract: Various embodiments provide an optical image stabilization circuit that synchronizes its gyroscope and drive circuit using gyroscope data ready signals and gyroscope reset signals. In response to a gyroscope data ready signal, the optical image stabilization circuit synchronously obtains position measurements of a camera lens when power drive signals are not transitioning from one power level to another power level, and synchronously transitions the power drive signals simultaneously with gyroscope reset signals. By synchronizing the gyroscope and the drive circuit, the gyroscope and other onboard sensing circuits are isolated from noise generated by the drive circuit.

公开(公告)号：US09432004B2

公开(公告)日：2016-08-30

申请号：US14255400

申请日：2014-04-17

Applicant: STMicroelectronics, Inc.

Inventor： Felix Kim ,  Mark A. Lysinger ,  Scott V. Ho

IPC: H03L5/00 ,  H03K5/003

CPC classification number: H03K5/003 ,  H03F1/30 ,  H03F2200/375 ,  H03G1/0088 ,  H03G3/30

Abstract: Gain offset and voltage offset compensation for a controllable gain element of a circuit is effected in response to a gain offset value and voltage offset value. A current operating condition of the circuit is sensed and compared to a nominal operating condition. If the current operating condition is outside the nominal operating condition by more than a threshold, a calibration operation to set the gain and voltage offset values is performed. The gain offset value is selected as a function of the sensed current operating condition. With respect to the voltage offset, differential input terminals of the controllable gain element are shunted and the output is measured. The measured output value of the controllable gain element is applied as the voltage offset value. The operating conditions at issue may be one or more of supply voltage and temperature.

Abstract translation: 响应于增益偏移值和电压偏移值来实现电路的可控增益元件的增益偏移和电压偏移补偿。 检测电路的当前工作状态并将其与标称工作条件进行比较。 如果当前工作条件超出标称工作状态超过阈值，则执行设定增益和电压偏移值的校准操作。 选择增益偏移值作为感测到的当前操作条件的函数。 关于电压偏移，可控增益元件的差分输入端子被分流并且测量输出。 可控增益元件的测量输出值被应用为电压偏移值。 所讨论的操作条件可以是电源电压和温度中的一个或多个。

公开(公告)号：US10459243B2

公开(公告)日：2019-10-29

申请号：US15927387

申请日：2018-03-21

Applicant: STMicroelectronics, Inc.

Inventor： Chih-Hung Tai ,  Felix Kim ,  Mark A. Lysinger

IPC: G02B27/64

Abstract: Various embodiments provide an optical image stabilization circuit that synchronizes its gyroscope and drive circuit using gyroscope data ready signals and gyroscope reset signals. In response to a gyroscope data ready signal, the optical image stabilization circuit synchronously obtains position measurements of a camera lens when power drive signals are not transitioning from one power level to another power level, and synchronously transitions the power drive signals simultaneously with gyroscope reset signals. By synchronizing the gyroscope and the drive circuit, the gyroscope and other onboard sensing circuits are isolated from noise generated by the drive circuit.

公开(公告)号：US20180217397A1

公开(公告)日：2018-08-02

申请号：US15927387

申请日：2018-03-21

Applicant: STMicroelectronics, Inc.

Inventor： Chih-Hung Tai ,  Felix Kim ,  Mark A. Lysinger

IPC: G02B27/64

Abstract: Various embodiments provide an optical image stabilization circuit that synchronizes its gyroscope and drive circuit using gyroscope data ready signals and gyroscope reset signals. In response to a gyroscope data ready signal, the optical image stabilization circuit synchronously obtains position measurements of a camera lens when power drive signals are not transitioning from one power level to another power level, and synchronously transitions the power drive signals simultaneously with gyroscope reset signals. By synchronizing the gyroscope and the drive circuit, the gyroscope and other onboard sensing circuits are isolated from noise generated by the drive circuit.