Patents by Inventor Yu-Chung WEI
Yu-Chung WEI 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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Patent number: 11493543Abstract: A voltage comparator and an operation method thereof are provided. The voltage comparator includes an amplifying circuit, a reference current source, and a transient current source. A first input terminal and a second input terminal of the amplifying circuit respectively receive a first corresponding voltage corresponding to a target voltage and a reference voltage. The reference current source is coupled to the amplifying circuit to provide a reference current. The transient current source is coupled to the amplifying circuit to selectively provide a transient current. The transient current source detects a transition of a second corresponding voltage corresponding to the target voltage to dynamically adjust the transient current. Therefore, when a rapidly increasing voltage occurs in the target voltage, the transient current source may temporarily increase the current of the amplifying circuit, thereby accelerating the response speed of the amplifying circuit.Type: GrantFiled: November 25, 2021Date of Patent: November 8, 2022Assignee: VIA LABS, INC.Inventors: Wei-Yu Wang, Yu-Chung Wei
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Patent number: 10860517Abstract: A terminating resistor circuit of a USB port and an operation method thereof are provided. The terminating resistor circuit includes a terminating resistor, a terminating switch, and an energy storage control circuit. The terminating resistor and the terminating switch are connected in series between a configuration channel pin of the USB port and a first reference voltage, and the energy storage control circuit is coupled to a control end of the terminating switch. During a charging period in a configuration detection period, the energy storage control circuit stores charge from the configuration channel pin to obtain a stored electrical energy, and during a discharging period in the configuration detection period, the energy storage control circuit turns on the terminating switch by using the stored electrical energy.Type: GrantFiled: October 23, 2019Date of Patent: December 8, 2020Assignee: VIA LABS, INC.Inventors: Wei-Yu Wang, Yu-Chung Wei
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Patent number: 10817450Abstract: A USB apparatus and an operation method thereof are provided. The USB apparatus includes a USB connector, a terminal resistor circuit, and an overvoltage protection circuit. The terminal resistor circuit includes a terminal resistor and a terminal switch connected to each other in series. The terminal resistor and the terminal switch jointly provide a current path between a configuration channel (CC) pin of the USB connector and a reference voltage. The terminal switch is turned on during a configuration detection period. During a power saving period after the configuration detection period ends, the overvoltage protection circuit controls the terminal resistor circuit to turn off the terminal switch. The overvoltage protection circuit detects an overvoltage event at the CC pin. When an overvoltage event occurs at the CC pin, the overvoltage protection circuit controls the terminal resistor circuit to turn on the terminal switch.Type: GrantFiled: November 21, 2019Date of Patent: October 27, 2020Assignee: VIA LABS, INC.Inventor: Yu-Chung Wei
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Patent number: 10606788Abstract: The USB chipset including a data processing unit, a transmitting unit, a first pin set and a second pin set is provided. The data processing unit generates a plurality of transmission information according to first information provided by a first device. The transmitting unit processes the transmission information to generate an output signal. The first pin set is configured to transmit the output signal to a second device. The second pin set is configured to transmit the output signal to the second device. When the first pin set transmits the output signal to the second device, the second pin set does not transmit the output signal to the second device. When the second pin set transmits the output signal to the second device, the first pin set does not transmit the output signal to the second device.Type: GrantFiled: July 31, 2018Date of Patent: March 31, 2020Assignee: VIA LABS, INC.Inventors: Wei-Yu Wang, Yu-Chung Wei, Yinglien Cheng
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Patent number: 10305462Abstract: A high speed internal hysteresis comparator is provided. Impedance supply units are disposed at control terminals of transistors of an active load of a differential amplifier of the high-speed hysteresis comparator, such that a gain when the transistors operate in an active region and a responding speed of the high-speed hysteresis comparator are increased.Type: GrantFiled: March 15, 2018Date of Patent: May 28, 2019Assignee: VIA Technologies, Inc.Inventors: Wei-Yu Wang, Yu-Chung Wei
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Publication number: 20180336156Abstract: The USB chipset including a data processing unit, a transmitting unit, a first pin set and a second pin set is provided. The data processing unit generates a plurality of transmission information according to first information provided by a first device. The transmitting unit processes the transmission information to generate an output signal. The first pin set is configured to transmit the output signal to a second device. The second pin set is configured to transmit the output signal to the second device. When the first pin set transmits the output signal to the second device, the second pin set does not transmit the output signal to the second device. When the second pin set transmits the output signal to the second device, the first pin set does not transmit the output signal to the second device.Type: ApplicationFiled: July 31, 2018Publication date: November 22, 2018Inventors: Wei-Yu WANG, Yu-Chung WEI, Yinglien CHENG
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Patent number: 10061735Abstract: A USB chipset coupled between a first device and a second device is provided. A data processing unit is coupled to the first device and generates a plurality of transmission information according to first information provided by the first device. A transmitting unit is coupled to the data processing unit to transmit the transmission information to the second device and includes a converting module, a first output driving module, a second output driving module, and a transmitting-terminal selecting module. The converting module is coupled to the data processing unit to receive the transmission information in parallel and serially outputs the transmission information. The first output driving module is coupled to a first pin set. The second output driving module is coupled to a second pin set. The transmitting-terminal selecting module is coupled between the converting module and the first and second output driving modules.Type: GrantFiled: March 2, 2016Date of Patent: August 28, 2018Assignee: VIA TECHNOLOGIES, INC.Inventors: Wei-Yu Wang, Yu-Chung Wei, Yinglien Cheng
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Patent number: 9654315Abstract: A slicer apparatus and a calibration method thereof are provided. A differential reference signal pair used for performing an error slicing operation is adjusted, so as to calibrate an offset voltage of the slicer apparatus.Type: GrantFiled: January 8, 2016Date of Patent: May 16, 2017Assignee: VIA Technologies, Inc.Inventor: Yu-Chung Wei
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Publication number: 20170070373Abstract: A slicer apparatus and a calibration method thereof are provided. A differential reference signal pair used for performing an error slicing operation is adjusted, so as to calibrate an offset voltage of the slicer apparatus.Type: ApplicationFiled: January 8, 2016Publication date: March 9, 2017Inventor: Yu-Chung Wei
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Publication number: 20160259753Abstract: A USB chipset coupled between a first device and a second device is provided. A data processing unit is coupled to the first device and generates a plurality of transmission information according to first information provided by the first device. A transmitting unit is coupled to the data processing unit to transmit the transmission information to the second device and includes a converting module, a first output driving module, a second output driving module, and a transmitting-terminal selecting module. The converting module is coupled to the data processing unit to receive the transmission information in parallel and serially outputs the transmission information. The first output driving module is coupled to a first pin set. The second output driving module is coupled to a second pin set. The transmitting-terminal selecting module is coupled between the converting module and the first and second output driving modules.Type: ApplicationFiled: March 2, 2016Publication date: September 8, 2016Inventors: Wei-Yu WANG, Yu-Chung WEI, Yinglien CHENG
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Publication number: 20140167714Abstract: A soft-start circuit is provided. The soft-start circuit generates an output voltage at an output terminal. The soft-start includes a transistor, a capacitor, and a current source. The transistor has a first terminal receiving an input voltage, a second terminal coupled to the output terminal, and a control terminal. The capacitor is coupled between the second terminal and the control terminal of the transistor. The current source is coupled between the control terminal of the transistor and a ground terminal. The capacitor and the current source modulate the output voltage by modulating a driving voltage at the control terminal to perform a soft-start operation of the output voltage.Type: ApplicationFiled: November 27, 2013Publication date: June 19, 2014Applicant: VIA TECHNOLOGIES, INC.Inventor: Yu-Chung WEI