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公开(公告)号：US12143786B2
公开(公告)日：2024-11-12
申请号：US18079011
申请日：2022-12-12
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Tsung-Han Yang , Yen-Chih Wang , Ming-Jun Hsiao , Tsung-Nan Wu
Abstract: An electronic device includes two speakers, a single functional chip, a parameter extraction circuit, an audio processing module, a gain adjusting circuit and a current detecting unit. The current detecting unit is disposed in the functional chip for detecting the driving current of the two speakers. The functional chip provides the driving voltage of the two speakers based on an output signal and converts the analogue current/voltages of the two speakers into digital current/voltages. The parameter extraction circuit acquires the parameter of each speaker based on the digital current/voltages. The audio processing module acquires the gains of various physical quantities based on the parameter of each speaker and determines the final gain of each physical quantity. The gain adjusting circuit provides the output signal by adjusting the gain of an input signal based on the final gain of each physical quantity.
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公开(公告)号：US11792900B2
公开(公告)日：2023-10-17
申请号：US17973526
申请日：2022-10-25
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Ching-Yi Chen , Hsing-Shen Huang
IPC: H05B45/325 , H05B45/10
CPC classification number: H05B45/325 , H05B45/10
Abstract: A dimmer circuit includes a light emitting module, a first current source, a digital-to-analog converter, a switch, a second current source and a pulse width modulation generator. The light emitting module is for emitting light according to a driving current. The first current source includes a first terminal coupled to a second terminal of the light emitting module. The digital-to-analog converter is for generating a DC voltage according to a DC dimming code signal to control the first current source. The switch includes a first terminal coupled to a second terminal of the light emitting module. The second current source includes a first terminal coupled to a second terminal of the switch. The PWM generator is for generating a PWM voltage according to the PWM dimming code signal to control the second current source.
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公开(公告)号：US11539246B1
公开(公告)日：2022-12-27
申请号：US17667553
申请日：2022-02-09
Applicant: RICHTEK TECHNOLOGY CORP.
Inventor： Wei-Shuo Wu
Abstract: A wireless charging system includes a wireless power transmitter and N wireless power receivers. The wireless power transmitter includes a power input terminal for receiving an input power, and M transmission modules. Each transmission module includes a power controller, a power management unit, a bridge driver, and a transmission unit. The N wireless power receivers are for receiving N wireless power signals from N transmission units of N transmission modules respectively, and wirelessly transmitting the N communication signals to the N transmission units of the N transmission modules respectively. The M power management units of the M transmission modules are coupled to each other and transmit control signals for handshaking communication.
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公开(公告)号：US09568376B2
公开(公告)日：2017-02-14
申请号：US14194673
申请日：2014-03-01
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Sheng-Fu Hsiao , Hung-Shou Nien , Kuang-Feng Li , Yu-Wei Chang
CPC classification number: G01K7/16 , G01K2217/00
Abstract: A temperature detecting circuit and method thereof, adapted to a voltage converter circuit which includes a current detecting circuit having a detecting output port outputting a current detecting signal proportional to an output current of the voltage converter circuit, includes: a current signal processing unit, having a signal input port coupling to the detecting output port, a first detecting output port generating a first processing signal with a first temperature coefficient, a second detecting output port generating a second processing signal with a second temperature coefficient, wherein the first and the second processing signals are proportional to the current detecting signal; and, a temperature calculating unit, receiving the first and the second processing signals and performing calculation to derive a temperature value.
Abstract translation: 一种温度检测电路及其方法，适用于包括电流检测电路的电压转换器电路，所述电流检测电路具有输出与所述电压转换器电路的输出电流成比例的电流检测信号的检测输出端口，所述电流检测电路包括：电流信号处理单元， 耦合到检测输出端口的信号输入端口，产生具有第一温度系数的第一处理信号的第一检测输出端口，产生具有第二温度系数的第二处理信号的第二检测输出端口，其中第一和第二处理 信号与电流检测信号成比例; 以及温度计算单元，接收第一处理信号和第二处理信号，并进行计算以导出温度值。
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85.发明授权Voltage converting controller, voltage converting circuit, and control method for voltage converting 有权电压转换控制器，电压转换电路和电压转换控制方法公开(公告)号：US09287785B2
公开(公告)日：2016-03-15
申请号：US14475350
申请日：2014-09-02
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Chuh Ching Lee , Chien-Fu Tang , Chun Shih Huang
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/33523 , H02M2001/0019
Abstract: A voltage converting controller. When output current increases from a first current value to a second current value, the voltage converting controller temporarily sets a control frequency to a maximum frequency value. After a period of time, the voltage converting controller sets the control frequency to a target control frequency corresponding to the second current value. And, when the output current increases from the first current value to the second current value, the voltage converting controller temporarily sets a secondary-side output voltage to an transient output value; and after a period of time, the voltage converting controller sets a steady state value of the secondary-side output voltage to an output voltage steady state value corresponding to the second current value.
Abstract translation: 电压转换控制器。 当输出电流从第一电流值增加到第二电流值时，电压转换控制器将控制频率暂时设定为最大频率值。 一段时间后，电压转换控制器将控制频率设定为与第二电流值对应的目标控制频率。 而且，当输出电流从第一电流值增加到第二电流值时，电压转换控制器暂时将次级侧输出电压设定为瞬态输出值; 并且经过一段时间后，电压转换控制器将次级侧输出电压的稳态值设定为对应于第二电流值的输出电压稳态值。
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Patent Agency Ranking
86.发明授权Voltage converting controller, voltage converting circuit, and control method for voltage converting 有权电压转换控制器，电压转换电路和电压转换控制方法公开(公告)号：US09270186B2
公开(公告)日：2016-02-23
申请号：US14482882
申请日：2014-09-10
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Chuh Ching Lee , Chien Fu Tang , Chun Shih Huang
CPC classification number: H02M3/33523 , H02M3/335 , H02M3/337 , H02M3/338 , H02M3/34 , H02M2001/0009 , H02M2001/0019 , H02M2001/0032 , Y02B70/16
Abstract: A voltage converting controller, in which when an output current increases from a first current value to a second current value, the voltage converting controller temporarily sets a control frequency to a maximum frequency value; and after a period of time, sets the control frequency to a target control frequency corresponding to the second current value. In addition, when the output current increases from the first current value to the second current value, the voltage converting controller temporarily sets a secondary-side output voltage to an transient output value; and after a period of time, sets a steady state value of the secondary-side output voltage to an output voltage steady state value corresponding to the second current value.
Abstract translation: 一种电压转换控制器，其中当输出电流从第一电流值增加到第二电流值时，所述电压转换控制器将控制频率临时设置为最大频率值; 并且在一段时间之后，将控制频率设置为对应于第二电流值的目标控制频率。 此外，当输出电流从第一电流值增加到第二电流值时，电压转换控制器暂时将次级侧输出电压设定为瞬态输出值; 并且经过一段时间后，将次级侧输出电压的稳态值设定为对应于第二电流值的输出电压稳定值。
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公开(公告)号：US09264829B2
公开(公告)日：2016-02-16
申请号：US14302680
申请日：2014-06-12
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Kuo Shih Tsai
CPC classification number: H04R29/001 , H04R3/04
Abstract: A method and device for detecting a force factor of a loudspeaker is provided. The method includes the steps of: providing the loudspeaker with a dynamic driving voltage signal; continuously measuring a current signal flowing through the loudspeaker; observing the current signal and if the current signal shows that the diaphragm excursion of the loudspeaker is greater than an displacement limit, decreasing the driving voltage signal until the current signal shows that the diaphragm excursion of the loudspeaker is less than or equal to the displacement limit; and substituting the current driving voltage signal, the current signal, the displacement limit, and an electrical impedance of the loudspeaker into a function so as to compute the force factor of the loudspeaker.
Abstract translation: 提供一种用于检测扬声器的力因子的方法和装置。 该方法包括以下步骤：向扬声器提供动态驱动电压信号; 连续测量流经扬声器的电流信号; 观察电流信号，如果电流信号表明扬声器的振膜偏移大于位移极限，则降低驱动电压信号，直到当前信号显示扬声器的振膜偏移小于或等于位移极限 ; 并将扬声器的电流驱动电压信号，电流信号，位移限制和电阻抗代入功能，以计算扬声器的力因子。
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88.发明申请VOLTAGE CONVERTING CONTROLLER, VOLTAGE CONVERTING CIRCUIT, AND CONTROL METHOD FOR VOLTAGE CONVERTING 有权电压转换控制器，电压转换电路和电压转换控制方法公开(公告)号：US20150372602A1
公开(公告)日：2015-12-24
申请号：US14482882
申请日：2014-09-10
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Chuh Ching Lee , Chien Fu Tang , Chun Shih Huang
IPC: H02M3/335
CPC classification number: H02M3/33523 , H02M3/335 , H02M3/337 , H02M3/338 , H02M3/34 , H02M2001/0009 , H02M2001/0019 , H02M2001/0032 , Y02B70/16
Abstract: A voltage converting controller, in which when an output current increases from a first current value to a second current value, the voltage converting controller temporarily sets a control frequency to a maximum frequency value; and after a period of time, sets the control frequency to a target control frequency corresponding to the second current value. In addition, when the output current increases from the first current value to the second current value, the voltage converting controller temporarily sets a secondary-side output voltage to an transient output value; and after a period of time, sets a steady state value of the secondary-side output voltage to an output voltage steady state value corresponding to the second current value.
Abstract translation: 一种电压转换控制器，其中当输出电流从第一电流值增加到第二电流值时，所述电压转换控制器将控制频率临时设置为最大频率值; 并且在一段时间之后，将控制频率设置为对应于第二电流值的目标控制频率。 此外，当输出电流从第一电流值增加到第二电流值时，电压转换控制器暂时将次级侧输出电压设定为瞬态输出值; 并且经过一段时间后，将次级侧输出电压的稳态值设定为对应于第二电流值的输出电压稳定值。
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公开(公告)号：US09130466B2
公开(公告)日：2015-09-08
申请号：US14073511
申请日：2013-11-06
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Chun-Shih Huang , Hsin-Hsiung Wang
IPC: H02M3/335
CPC classification number: H02M3/33507
Abstract: A voltage converter controller and a voltage converter circuit, either of which includes a voltage-drop compensating circuit for compensating a voltage drop between an output voltage and a load. The voltage-drop compensating circuit includes a trans-conductance stage and a squarer. The trans-conductance stage outputs a compensating sink current to a voltage dividing terminal of the output voltage and outputs a compensating source current to a reference voltage terminal of an error amplifier. An input terminal of the squarer is coupled to an output terminal of the error amplifier. An output terminal of the squarer is coupled to an input terminal of the trans-conductance stage.
Abstract translation: 一种电压转换器控制器和电压转换器电路，其中之一包括用于补偿输出电压和负载之间的电压降的电压降补偿电路。 电压降补偿电路包括跨导级和平方。 跨导级将补偿灌电流输出到输出电压的分压端，并将补偿源电流输出到误差放大器的参考电压端。 平方器的输入端耦合到误差放大器的输出端。 平方的输出端耦合到跨导级的输入端。
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公开(公告)号：US20150208189A1
公开(公告)日：2015-07-23
申请号：US14302680
申请日：2014-06-12
Applicant: RICHTEK TECHNOLOGY CORP
Inventor： Kuo Shih Tsai
CPC classification number: H04R29/001 , H04R3/04
Abstract: A method and device for detecting a force factor of a loudspeaker is provided. The method includes the steps of: providing the loudspeaker with a dynamic driving voltage signal; continuously measuring a current signal flowing through the loudspeaker; observing the current signal and if the current signal shows that the diaphragm excursion of the loudspeaker is greater than an displacement limit, decreasing the driving voltage signal until the current signal shows that the diaphragm excursion of the loudspeaker is less than or equal to the displacement limit; and substituting the current driving voltage signal, the current signal, the displacement limit, and an electrical impedance of the loudspeaker into a function so as to compute the force factor of the loudspeaker.
Abstract translation: 提供一种用于检测扬声器的力因子的方法和装置。 该方法包括以下步骤：向扬声器提供动态驱动电压信号; 连续测量流经扬声器的电流信号; 观察电流信号，如果电流信号表明扬声器的振膜偏移大于位移极限，则降低驱动电压信号，直到当前信号显示扬声器的振膜偏移小于或等于位移极限 ; 并将扬声器的电流驱动电压信号，电流信号，位移限制和电阻抗代入功能，以计算扬声器的力因子。
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