-
公开(公告)号：US20240332289A1
公开(公告)日：2024-10-03
申请号：US18618485
申请日：2024-03-27
Applicant: ROHM CO., LTD.
Inventor： Tatsuro SHIMIZU
IPC: H01L27/06 , G01R19/165
CPC classification number: H01L27/0682 , G01R19/16504
Abstract: The present disclosure provides a semiconductor integrated circuit. The semiconductor integrated circuit includes a set pin. An external resistor and an external capacitor are connected in parallel between the set pin and an external fixed voltage line. A parameter acquisition circuit is connected to the set pin to obtain a first parameter and a second parameter defined by a resistive value of the external resistor and a capacitive value of the external capacitor.
-
公开(公告)号：US20240333185A1
公开(公告)日：2024-10-03
申请号：US18618441
申请日：2024-03-27
Applicant: ROHM CO., LTD.
Inventor： Tatsuro SHIMIZU
IPC: H02P23/12
CPC classification number: H02P23/12
Abstract: The present disclosure provides a controller circuit, which is a controller circuit of a motor. The controller circuit includes: a compensator, configured to generate a manipulated amount corresponding to an error between a detected value of a control amount of the motor and a command value of the control amount; and a disturbance observer. The disturbance observer has a transfer function of a system in which the command value is an input, and the control amount is an output. The disturbance observer is configured to generate a virtual control amount by inputting the command value to the transfer function and correct the command value based on a disturbance estimated value according to a difference between the virtual control amount and the detected value of the control amount.
-
公开(公告)号：US20220034969A1
公开(公告)日：2022-02-03
申请号：US17388461
申请日：2021-07-29
Applicant: ROHM CO., LTD.
Inventor： Naoyuki Usagawa , Takashi Esumi , Tatsuro SHIMIZU
Abstract: The present disclosure relates to a motor control system including: a motor control device, including a semiconductor integrated circuit having a memory and forming a control loop for a motor so as to control a drive of the motor; and an external debug device, externally connected to the motor control device and accessible to the memory in the motor control device. The external debug device includes a disturbance signal superimposer and a frequency characteristics deriver. The interference signal superimposer generates a disturbance signal for the control loop and superimposes the disturbance signal on a signal generated in the control loop. The frequency characteristics deriver derives frequency characteristics of the control loop based on the signal generated in the control loop by superimposition.
-
公开(公告)号：US20240204709A1
公开(公告)日：2024-06-20
申请号：US18438967
申请日：2024-02-12
Applicant: ROHM CO., LTD.
Inventor： Tatsuro SHIMIZU
IPC: H02P29/024 , H03K19/007
CPC classification number: H02P29/024 , H03K19/007
Abstract: A first circuit has a predetermined function with an output that has a small dependence on a certain operation condition. A second circuit has the same function as that of the first circuit with an output that has a large dependence on the certain operation condition. When the first circuit is operating normally, the main circuit operates according to the output of the first circuit. The main circuit is capable of generating a detection signal that indicates the certain operation condition based on a relative relation between the output of the first circuit and the output of the second circuit.
-
公开(公告)号：US20210132224A1
公开(公告)日：2021-05-06
申请号：US17145784
申请日：2021-01-11
Applicant: ROHM CO., LTD.
Inventor： Yuji TSUJI , Okimoto KONDO , Tatsuro SHIMIZU
IPC: G01S17/04 , G01S17/06 , G01S7/481 , H04N5/3745 , H01L27/146
Abstract: A light emitting and receiving device includes: a light emitting element, a first light receiving element, and a second light receiving element. A reference signal generator generates a reference signal including a component of a predetermined reference frequency. A drive circuit supplies a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches a reference signal. A correlation detector detects an output of the second light receiving element by correlating with the component of the reference frequency.
-
Patent Agency Ranking
公开(公告)号：US20200374428A1
公开(公告)日：2020-11-26
申请号：US16989081
申请日：2020-08-10
Applicant: ROHM CO., LTD. , Sony Semiconductor Solutions Corporation
Inventor： Akihito SAITO , Tatsuya NINOMIYA , Nobuo KOHMURA , Kento NISHIZAWA , Tatsuro SHIMIZU , Takahiro AKAHANE , Go ASAYAMA , Yuki URANO
Abstract: An image sensor includes a pixel array including multiple pixels. A lens is provided on an optical path of incident light to the image sensor. An actuator includes a coil, and supports positioning of the lens according to a driving signal applied to the coil. A position detection coil is arranged such that it magnetically couples with the coil of the actuator. An actuator driver supplies a pulse-shaped driving signal to the coil of the actuator driver. A position detection circuit generates a position detection signal that indicates the position of the lens based on an induced electromotive force that occurs in the position detection coil according to the driving signal, and feeds back the position detection signal to the actuator driver.
-
公开(公告)号：US20190235078A1
公开(公告)日：2019-08-01
申请号：US16258981
申请日：2019-01-28
Applicant: ROHM CO., LTD.
Inventor： Yuji TSUJI , Okimoto KONDO , Tatsuro SHIMIZU
IPC: G01S17/02 , G01S17/06 , G01S7/481 , H01L27/146 , H04N5/3745
CPC classification number: G01S17/026 , G01S7/4811 , G01S17/06 , H01L27/14623 , H01L27/14629 , H01L27/14634 , H01L27/14636 , H04N5/37455
Abstract: A light emitting and receiving device includes: a light emitting element, a first light receiving element, and a second light receiving element. A reference signal generator generates a reference signal including a component of a predetermined reference frequency. A drive circuit supplies a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches a reference signal. A correlation detector detects an output of the second light receiving element by correlating with the component of the reference frequency.
-
公开(公告)号：US20180255230A1
公开(公告)日：2018-09-06
申请号：US15911988
申请日：2018-03-05
Applicant: ROHM CO., LTD.
Inventor： Tatsuro SHIMIZU
CPC classification number: H04N5/23212 , G03B3/10 , G03B2205/0053 , H04N5/2253 , H04N5/2254
Abstract: An actuator driver used in an image pickup apparatus includes: an image pickup element; a lens installed on an incident optical path to the image pickup element; an actuator configured to cause a displacement of the lens; a position detection element configured to generate a position detection signal representing the displacement of the lens; and the actuator driver configured to perform feedback control of the actuator on the basis of a target code, which represents a target displacement of the lens, and the position detection signal, the actuator driver including: a correction circuit configured to convert a first detection code according to the position detection signal into a second detection code having a linear relationship with respect to an actual displacement of the lens; and a control circuit configured to control the actuator such that the second detection code approximates the target code.
-
公开(公告)号：US20160261215A1
公开(公告)日：2016-09-08
申请号：US15153008
申请日：2016-05-12
Applicant: ROHM CO., LTD.
Inventor： Hiroyuki ISHII , Tatsuro SHIMIZU
Abstract: A first calculation unit subtracts third digital data which indicates the minimum value of the duty ratio from first digital data which indicates the duty ratio of the PWM driving operation. A slope calculation unit generates slope data which is dependent on the temperature based upon second digital data which indicates the temperature. A second calculation unit multiplies the slope data by the output data of the first calculation unit. A third calculation unit sums the output data of the second calculation unit and the third digital data. A selector receives the output data of the third calculation unit and the third digital data, selects one data that corresponds to the sign of the output data of the first calculation unit, and outputs the data thus selected as a duty ratio control signal.
Abstract translation: 第一计算单元从指示PWM驱动操作的占空比的第一数字数据中减去指示占空比的最小值的第三数字数据。 斜率计算单元基于指示温度的第二数字数据产生依赖于温度的斜率数据。 第二计算单元将斜率数据乘以第一计算单元的输出数据。 第三计算单元将第二计算单元的输出数据和第三数字数据相加。 选择器接收第三计算单元和第三数字数据的输出数据，选择与第一计算单元的输出数据的符号对应的一个数据，并输出这样选择的数据作为占空比控制信号。
-
公开(公告)号：US20140177165A1
公开(公告)日：2014-06-26
申请号：US14193123
申请日：2014-02-28
Applicant: ROHM CO., LTD.
Inventor： Hiroyuki ISHII , Tatsuro SHIMIZU
Abstract: A first calculation unit subtracts third digital data which indicates the minimum value of the duty ratio from first digital data which indicates the duty ratio of the PWM driving operation. A slope calculation unit generates slope data which is dependent on the temperature based upon second digital data which indicates the temperature. A second calculation unit multiplies the slope data by the output data of the first calculation unit. A third calculation unit sums the output data of the second calculation unit and the third digital data. A selector receives the output data of the third calculation unit and the third digital data, selects one data that corresponds to the sign of the output data of the first calculation unit, and outputs the data thus selected as a duty ratio control signal.
Abstract translation: 第一计算单元从指示PWM驱动操作的占空比的第一数字数据中减去指示占空比的最小值的第三数字数据。 斜率计算单元基于指示温度的第二数字数据产生依赖于温度的斜率数据。 第二计算单元将斜率数据乘以第一计算单元的输出数据。 第三计算单元将第二计算单元的输出数据和第三数字数据相加。 选择器接收第三计算单元和第三数字数据的输出数据，选择与第一计算单元的输出数据的符号对应的一个数据，并输出这样选择的数据作为占空比控制信号。
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.015 seconds)
