Patents by Inventor Jian Ru Lin
Jian Ru Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230025101Abstract: An analog front-end device includes an amplifier circuit, a first gain control circuit, and a tracking circuit. The amplifier circuit is configured to generate a first output signal according to a first input signal. The first gain control circuit is configured to set a first electronic component according to a first gain control signal and transmit the first input signal to a first input terminal of the amplifier circuit via the first electronic component, in which a terminal of the first electronic component is selectively coupled to the first input terminal or a first predetermined node. The tracking circuit is configured to adjust a level of the first predetermined node according to a level of the first input terminal, in order to reduce a voltage difference between the first input terminal and the first predetermined node.Type: ApplicationFiled: June 2, 2022Publication date: January 26, 2023Inventors: JIAN-RU LIN, KAI-YUE LIN, YU-TING CHIU
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Patent number: 11546002Abstract: A transmitter, a receiver and a transceiver are provided. The transceiver includes a hybrid transceiving circuit and a common-mode voltage control circuit. The hybrid transceiving circuit includes a digital-to-analog converter (DAC) circuit, a line driver coupled to the DAC circuit, a filtering and/or amplifying circuit coupled to the line driver, and an analog-to-digital converter (ADC) circuit coupled to the filtering and/or amplifying circuit. The common-mode voltage control circuit is electrically connected to a node of the hybrid transceiving circuit and is configured to detect a common-mode voltage of the node and to adjust the common-mode voltage of the node.Type: GrantFiled: April 8, 2020Date of Patent: January 3, 2023Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Jian-Ru Lin, Wei-Chou Wang, Tung-Hung Sung, Shih-Hsiung Huang
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Patent number: 11184014Abstract: Disclosed is a voltage-controlled oscillator (VCO) capable of providing an effective high VCO gain against slow change of an input voltage caused by the variation of manufacturing processes, temperature, voltage, etc. and providing an effective low VCO gain against rapid change of the input voltage for reducing jitter. The VCO includes: an input circuit generating an input current according to an input voltage; a first current supply circuit generating a first output current according to the input current; a second current supply circuit generating a second output current according to the input current; a filter coupled to the input circuit and the second current supply circuit and configured to slow down the influence caused by the variation of the input current on the second current supply circuit; and an oscillating circuit generating an output clock according to the first output current and the second output current.Type: GrantFiled: June 30, 2020Date of Patent: November 23, 2021Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Sung-Lin Tsai, Kuo-Wei Wu, Jian-Ru Lin
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Patent number: 10931101Abstract: The present invention discloses an electrostatic discharge (ESD) protection circuit, including: a first terminal configured to receive a first voltage; a second terminal configured to receive a second voltage; a detection voltage generating circuit configured to provide a detection voltage according to the first voltage and the second voltage; a warning circuit configured to generate a control signal according to the detection voltage, in which the control signal indicates a normal condition when the detection voltage satisfies predetermined voltage setting, and the control signal indicates an abnormal condition when the detection voltage does not satisfy the predetermined voltage setting; and a protected circuit configured to carry out a self-protection operation when receiving the control signal indicating the abnormal condition.Type: GrantFiled: January 24, 2018Date of Patent: February 23, 2021Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Chien-Ming Wu, Jian-Ru Lin, Liang-Huan Lei, Cheng-Pang Chan
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Publication number: 20200403632Abstract: The invention discloses a calibration circuit and a calibration method for an analog-to-digital converter (ADC). The calibration method of the ADC includes the following steps: (a) resetting the voltage at the first input of the comparator and the voltage at the second input of the comparator; (b) changing a terminal voltage of at least one capacitor in the first capacitor group; (c) the ADC generating a first digital code; (d) after the first digital code is obtained, resetting the voltage at the first input of the comparator and the voltage at the second input of the comparator; (e) changing a terminal voltage of at least one capacitor in the third capacitor group; and (f) the ADC generating a second digital code. The first digital code and the second digital code are used to correct the output of the ADC.Type: ApplicationFiled: June 18, 2020Publication date: December 24, 2020Inventors: YU-CHANG CHEN, SHIH-HSIUNG HUANG, JIAN-RU LIN
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Patent number: 10862498Abstract: The invention discloses a calibration circuit and a calibration method for an analog-to-digital converter (ADC). The calibration method of the ADC includes the following steps: (a) resetting the voltage at the first input of the comparator and the voltage at the second input of the comparator; (b) changing a terminal voltage of at least one capacitor in the first capacitor group; (c) the ADC generating a first digital code; (d) after the first digital code is obtained, resetting the voltage at the first input of the comparator and the voltage at the second input of the comparator; (e) changing a terminal voltage of at least one capacitor in the third capacitor group; and (f) the ADC generating a second digital code. The first digital code and the second digital code are used to correct the output of the ADC.Type: GrantFiled: June 18, 2020Date of Patent: December 8, 2020Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Yu-Chang Chen, Shih-Hsiung Huang, Jian-Ru Lin
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Publication number: 20200336150Abstract: Disclosed is a voltage-controlled oscillator (VCO) capable of providing an effective high VCO gain against slow change of an input voltage caused by the variation of manufacturing processes, temperature, voltage, etc. and providing an effective low VCO gain against rapid change of the input voltage for reducing jitter. The VCO includes: an input circuit generating an input current according to an input voltage; a first current supply circuit generating a first output current according to the input current; a second current supply circuit generating a second output current according to the input current; a filter coupled to the input circuit and the second current supply circuit and configured to slow down the influence caused by the variation of the input current on the second current supply circuit; and an oscillating circuit generating an output clock according to the first output current and the second output current.Type: ApplicationFiled: June 30, 2020Publication date: October 22, 2020Inventors: SUNG-LIN TSAI, KUO-WEI WU, JIAN-RU LIN
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Publication number: 20200328761Abstract: A transmitter, a receiver and a transceiver are provided. The transceiver includes a hybrid transceiving circuit and a common-mode voltage control circuit. The hybrid transceiving circuit includes a digital-to-analog converter (DAC) circuit, a line driver coupled to the DAC circuit, a filtering and/or amplifying circuit coupled to the line driver, and an analog-to-digital converter (ADC) circuit coupled to the filtering and/or amplifying circuit. The common-mode voltage control circuit is electrically connected to a node of the hybrid transceiving circuit and is configured to detect a common-mode voltage of the node and to adjust the common-mode voltage of the node.Type: ApplicationFiled: April 8, 2020Publication date: October 15, 2020Inventors: JIAN-RU LIN, WEI-CHOU WANG, TUNG-HUNG SUNG, SHIH-HSIUNG HUANG
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Patent number: 10756740Abstract: Disclosed is a voltage-controlled oscillator (VCO) capable of providing an effective high VCO gain against slow change of an input voltage caused by the variation of manufacturing processes, temperature, voltage, etc. and providing an effective low VCO gain against rapid change of the input voltage for reducing jitter. The VCO includes: an input circuit generating an input current according to an input voltage; a first current supply circuit generating a first output current according to the input current; a second current supply circuit generating a second output current according to the input current; a filter coupled to the input circuit and the second current supply circuit and configured to slow down the influence caused by the variation of the input current on the second current supply circuit; and an oscillating circuit generating an output clock according to the first output current and the second output current.Type: GrantFiled: October 23, 2018Date of Patent: August 25, 2020Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Sung-Lin Tsai, Kuo-Wei Wu, Jian-Ru Lin
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Patent number: 10659070Abstract: A digital-to-analog converter (DAC) device includes a DAC circuitry. The DAC circuitry includes a first DAC circuit and a second DAC circuit. The first DAC circuit is configured to generate a first signal according to a plurality of least significant bits of an input signal. The second DAC circuit is configured to output a second signal according to a plurality of most significant bits of the input signal. A first turn-on time of at least one current source circuit in the first DAC circuit is configured to set the first signal.Type: GrantFiled: April 4, 2019Date of Patent: May 19, 2020Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Wei-Chou Wang, Hsiang-An Yang, Jian-Ru Lin
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Publication number: 20200099385Abstract: A digital-to-analog converter (DAC) device includes a DAC circuitry. The DAC circuitry includes a first DAC circuit and a second DAC circuit. The first DAC circuit is configured to generate a first signal according to a plurality of least significant bits of an input signal. The second DAC circuit is configured to output a second signal according to a plurality of most significant bits of the input signal. A first turn-on time of at least one current source circuit in the first DAC circuit is configured to set the first signal.Type: ApplicationFiled: April 4, 2019Publication date: March 26, 2020Inventors: Wei-Chou WANG, Hsiang-An YANG, Jian-Ru LIN
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Patent number: 10594332Abstract: A front-end receiving circuit includes a first input terminal receiving a first signal, a second input terminal receiving a second signal, a comparator, a first sampling switch, a first sampling shifting circuit and a control circuit. The first sampling switch is coupled between the first input terminal and the first comparator input terminal. The first sample shifting circuit includes a first capacitor, a first reference voltage source, and a second reference voltage source. In a sampling mode, the control circuit is configured to control the first sampling switch and the second sampling switch to be turned on, and control the first shifting switch to be turned off. In a shifting mode, the control circuit is configured to control the first sampling switch and the second sampling to be turned off, and control the first shifting switch to be turned on.Type: GrantFiled: April 29, 2019Date of Patent: March 17, 2020Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Liang-Huan Lei, Jian-Ru Lin, Shih-Hsiung Huang
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Publication number: 20200044639Abstract: A latch circuit includes a switch circuit, an input circuit, and an output circuit. The switch circuit is coupled between a first power node and a second power node, and includes a non-inverting output node and an inverting output node. The input circuit couples with the non-inverting output node and the inverting output node, and conducts the non-inverting output node with the second power node according to a clock signal and a data signal. The output circuit couples with the non-inverting output node, the inverting output node, the first power node, and the second power node. The output circuit conducts the non-inverting output node with the first power node according to the clock signal and the data signal. When the data signal is switched, the switch circuit sets a conductive path from the first power node to the second power node as an open circuit.Type: ApplicationFiled: July 23, 2019Publication date: February 6, 2020Inventors: Jian-Ru LIN, Liang-Huan LEI
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Patent number: 10535990Abstract: A power supply device includes a power supply circuit, a detection circuit, and a control circuit. The power supply circuit is configured to output a supply voltage. The detection circuit is configured to sequentially provide a first predetermined resistance and a second predetermined resistance according to a plurality of switching signals, in order to operate with an electronic device and the supply voltage to sequentially obtain a first detection voltage and a second detection voltage. The control circuit is configured to generate the switching signals, and determine a load resistance of the electronic device according to the first detection voltage and the second detection voltage. The control circuit is further configured to determine whether the load resistance is within a predetermined resistance range, and the power supply circuit is further configured to drive the electronic device if the load resistance is within the predetermined resistance range.Type: GrantFiled: May 1, 2017Date of Patent: January 14, 2020Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Chien-Sheng Chen, Jian-Ru Lin, Chih-Cheng Lin, Rui Wang
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Publication number: 20200014394Abstract: A front-end receiving circuit includes a first input terminal receiving a first signal, a second input terminal receiving a second signal, a comparator, a first sampling switch, a first sampling shifting circuit and a control circuit. The first sampling switch is coupled between the first input terminal and the first comparator input terminal. The first sample shifting circuit includes a first capacitor, a first reference voltage source, and a second reference voltage source. In a sampling mode, the control circuit is configured to control the first sampling switch and the second sampling switch to be turned on, and control the first shifting switch to be turned off. In a shifting mode, the control circuit is configured to control the first sampling switch and the second sampling to be turned off, and control the first shifting switch to be turned on.Type: ApplicationFiled: April 29, 2019Publication date: January 9, 2020Inventors: LIANG-HUAN LEI, JIAN-RU LIN, SHIH-HSIUNG HUANG
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Patent number: 10454245Abstract: A laser diode control circuit includes: a LD driver circuit for driving a laser diode; a direct current component remover circuit for generating a feedback signal based on a detected signal; a first conversion and filter circuit for generating a first filtered signal based on the feedback signal; a first rectifier for rectifying the first filtered signal to generate a first rectified signal; a reference signal generator for generating a reference signal; a second conversion and filter circuit for generating a second filtered signal based on the reference signal; a second rectifier for rectifying the second filtered signal to generate a second rectified signal; a rectified signals processing circuit for generating a processed signal based on the first and second rectified signals; and a comparator for generating a comparison signal based on the processed signal.Type: GrantFiled: September 7, 2018Date of Patent: October 22, 2019Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Kuan-Chang Tsung, Jian-Ru Lin, Chia-Liang Lin
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Publication number: 20190140652Abstract: Disclosed is a voltage-controlled oscillator (VCO) capable of providing an effective high VCO gain against slow change of an input voltage caused by the variation of manufacturing processes, temperature, voltage, etc. and providing an effective low VCO gain against rapid change of the input voltage for reducing jitter. The VCO includes: an input circuit generating an input current according to an input voltage; a first current supply circuit generating a first output current according to the input current; a second current supply circuit generating a second output current according to the input current; a filter coupled to the input circuit and the second current supply circuit and configured to slow down the influence caused by the variation of the input current on the second current supply circuit; and an oscillating circuit generating an output clock according to the first output current and the second output current.Type: ApplicationFiled: October 23, 2018Publication date: May 9, 2019Inventors: SUNG-LIN TSAI, KUO-WEI WU, JIAN-RU LIN
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Publication number: 20190058472Abstract: An impedance calibration device provided includes a timing device, a first transmitter, a first variable resistor, a second variable resistor and a first receiver. The first variable resistor is used to receive a first adjustment code. The second variable resistor is used to receive a second adjustment code. The first receiver generates a first contact digital signal according to a first contact voltage. The first receiver generates a first terminate digital signal according to a first terminate voltage and the first adjustment code. The first receiver generates a first load digital signal according to a load voltage and the second adjustment. The timing device dynamically adjust the first adjustment code and the second adjustment code according to the first contact digital signal, the first terminate digital signal and the first load digital signal.Type: ApplicationFiled: May 21, 2018Publication date: February 21, 2019Inventors: CHENG-PANG CHAN, CHIEN-MING WU, LIANG-HUAN LEI, JIAN-RU LIN
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Patent number: 10211831Abstract: An impedance calibration device provided includes a timing device, a first transmitter, a first variable resistor, a second variable resistor and a first receiver. The first variable resistor is used to receive a first adjustment code. The second variable resistor is used to receive a second adjustment code. The first receiver generates a first contact digital signal according to a first contact voltage. The first receiver generates a first terminate digital signal according to a first terminate voltage and the first adjustment code. The first receiver generates a first load digital signal according to a load voltage and the second adjustment. The timing device dynamically adjust the first adjustment code and the second adjustment code according to the first contact digital signal, the first terminate digital signal and the first load digital signal.Type: GrantFiled: May 21, 2018Date of Patent: February 19, 2019Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Cheng-Pang Chan, Chien-Ming Wu, Liang-Huan Lei, Jian-Ru Lin
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Publication number: 20180212422Abstract: The present invention discloses an electrostatic discharge (ESD) protection circuit, including: a first terminal configured to receive a first voltage; a second terminal configured to receive a second voltage; a detection voltage generating circuit configured to provide a detection voltage according to the first voltage and the second voltage; a warning circuit configured to generate a control signal according to the detection voltage, in which the control signal indicates a normal condition when the detection voltage satisfies predetermined voltage setting, and the control signal indicates an abnormal condition when the detection voltage does not satisfy the predetermined voltage setting; and a protected circuit configured to carry out a self-protection operation when receiving the control signal indicating the abnormal condition.Type: ApplicationFiled: January 24, 2018Publication date: July 26, 2018Inventors: CHIEN-MING WU, JIAN-RU LIN, LIANG-HUAN LEI, CHENG-PANG CHAN