公开(公告)号：US10587794B2

公开(公告)日：2020-03-10

申请号：US15962704

申请日：2018-04-25

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Yoshihisa Tabuchi

IPC: G02B7/09 ,  H04N5/232

Abstract: Various embodiments of the present technology may comprise methods and apparatus for actuator control. The methods and apparatus may comprise a control circuit adapted to generate a control signal and various signal processing functions to generate a calibration code that is used to calibrate the control circuit. The apparatus for actuator control may comprise an induced voltage detection circuit to detect an induced voltage and a calibration circuit to generate the calibration code, which is used to calibrate the induced voltage detection circuit.

公开(公告)号：US10567637B2

公开(公告)日：2020-02-18

申请号：US16191525

申请日：2018-11-15

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Yoshihisa Tabuchi ,  Takeshi Kura

IPC: H04N5/232 ,  G03B13/36 ,  G03B3/10

Abstract: Various embodiments of the present technology may comprise a method and apparatus for autofocus. In various embodiments, the methods and apparatus may decrease a settling time of a lens by increasing the target position gradually, varying the gain of a PID controller, and adding a kick pulse to a position signal.

公开(公告)号：US10165170B2

公开(公告)日：2018-12-25

申请号：US15450640

申请日：2017-03-06

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Yoshihisa Tabuchi ,  Takeshi Kura

IPC: H04N5/232

Abstract: Various embodiments of the present technology may comprise a method and apparatus for autofocus. In various embodiments, the methods and apparatus may decrease a settling time of a lens by increasing the target position gradually, varying the gain of a PID controller, and adding a kick pulse to a position signal.

公开(公告)号：US09389066B2

公开(公告)日：2016-07-12

申请号：US14249476

申请日：2014-04-10

Applicant: Semiconductor Components Industries, LLC

Inventor： Yoshihisa Tabuchi ,  Yasunori Nagata

IPC: G01B11/14 ,  G01J1/18 ,  G01B11/00 ,  G02B27/64

CPC classification number: G01B11/14 ,  G01B11/002 ,  G01J1/18 ,  G02B27/646 ,  G03B2205/0007

Abstract: A position of a lens is detected by detecting, using a phototransistor, light that is emitted from a photodiode and that varies depending on lens position. A control unit divides a moving range of the lens into a plurality of areas, approximates a relationship between lens positions and current of the phototransistor for each of the areas, corrects a current of the phototransistor using the approximated relationship so as to obtain a corrected detection current having a linear relationship with respect to lens positions, and detects the position of the lens using the obtained corrected detection current.

Abstract translation: 通过使用光电晶体管检测从光电二极管发出并根据透镜位置而变化的光来检测透镜的位置。 控制单元将透镜的移动范围分成多个区域，近似每个区域的透镜位置和光电晶体管的电流之间的关系，使用近似关系校正光电晶体管的电流，以获得校正检测 电流相对于透镜位置具有线性关系，并且使用获得的校正检测电流来检测透镜的位置。