Patents by Inventor Wei-Chi Huang
Wei-Chi Huang 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: 11973098Abstract: An image sensor module comprises an image sensor having a light sensing area, a cover glass for covering the light sensing area, a dam between the image sensor and the cover glass, which surrounds the light sensing area, and has an outer wall and an inner wall, where a cross-section of the inner wall parallel to the surface of the light sensing area of the image sensor forms a sawtooth pattern and/or, where a cross-section of the inner wall orthogonal to the surface of the light sensing area of the image sensor forms an inclined surface.Type: GrantFiled: October 26, 2022Date of Patent: April 30, 2024Assignee: OmniVision Technologies, Inc.Inventors: Wei-Feng Lin, En-Chi Li, Chi-Chih Huang
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Publication number: 20240055487Abstract: A substrate processing method includes providing a substrate, wherein the substrate has a surface and a bottom surface opposite to each other, the substrate is defined with a predetermined area, the predetermined area is defined with a predetermined reaction part, and the predetermined reaction part extends from the surface toward the bottom surface of the substrate; performing a anodization reaction on the predetermined reaction part by an electrochemical method to convert the predetermined reaction part into a weakened layer, wherein the weakened layer has a thickness; and removing the weakened layer so that the substrate in the predetermined area has an exposed surface.Type: ApplicationFiled: October 28, 2022Publication date: February 15, 2024Inventors: Tien-Hsi Lee, Jun-Huang Wu, Yu-Sheng Chiou, Shu-Cheng Li, Wei-Chi Huang, Yu-Tang Lin
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Publication number: 20220183399Abstract: An infant bib mainly comprises a body, an arm sleeve, a holding unit and a connecting structure, the arm sleeve at least includes two loops respectively disposed on two sides of the body, the holding unit is fixed on a surface of the body by the connecting structure, and a position and a height of the holding unit on the body is adjusted through the connecting structure, so that the infant bib can be used by infants of different ages and body shapes, and the infant bib can be worn on a body of an infant by having two arms of the infant going through the loops disposed on the two sides of the body to be capable of preventing restraint and uncomfortable feeling caused by the conventional infant bibs sleeving around the infant's neck.Type: ApplicationFiled: December 11, 2020Publication date: June 16, 2022Inventor: Wei-Chi Huang
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Patent number: 11145205Abstract: A system and method for addressing roadside parking issues are provided. The method includes: determining whether a parking fee has been paid for an on-street parking space, and if not, activating a detector of the corresponding parking meter; determining whether an object exists in the parking space and whether the object, if existing, is a vehicle, and if yes to both, activating a camera of the parking meter to obtain an image of the parking space; determining again whether the object is a vehicle by performing image and license plate recognition, and if yes, either prompting a parking enforcement officer to go to the parking space and issue a parking ticket or issuing the parking ticket automatically; updating the parking meter after the parking ticket is issued; and reducing the detection frequency. The method is labor-saving and reduces power consumption by the parking meter.Type: GrantFiled: March 18, 2020Date of Patent: October 12, 2021Inventor: Wei Chi Huang
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Publication number: 20200219395Abstract: A system and method for addressing roadside parking issues are provided. The method includes: determining whether a parking fee has been paid for an on-street parking space, and if not, activating a detector of the corresponding parking meter; determining whether an object exists in the parking space and whether the object, if existing, is a vehicle, and if yes to both, activating a camera of the parking meter to obtain an image of the parking space; determining again whether the object is a vehicle by performing image and license plate recognition, and if yes, either prompting a parking enforcement officer to go to the parking space and issue a parking ticket or issuing the parking ticket automatically; updating the parking meter after the parking ticket is issued; and reducing the detection frequency. The method is labor-saving and reduces power consumption by the parking meter.Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Inventor: WEI CHI HUANG
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Patent number: 10706723Abstract: A system and method for addressing roadside parking issues are provided. The method includes: determining whether a parking fee has been paid for an on-street parking space, and if not, activating a detector of the corresponding parking meter; determining whether an object exists in the parking space and whether the object, if existing, is a vehicle, and if yes to both, activating a camera of the parking meter to obtain an image of the parking space; determining again whether the object is a vehicle by performing image and license plate recognition, and if yes, either prompting a parking enforcement officer to go to the parking space and issue a parking ticket or issuing the parking ticket automatically; updating the parking meter after the parking ticket is issued; and reducing the detection frequency. The method is labor-saving and reduces power consumption by the parking meter.Type: GrantFiled: March 19, 2019Date of Patent: July 7, 2020Inventor: Wei Chi Huang
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Publication number: 20190304307Abstract: A system and method for addressing roadside parking issues are provided. The method includes: determining whether a parking fee has been paid for an on-street parking space, and if not, activating a detector of the corresponding parking meter; determining whether an object exists in the parking space and whether the object, if existing, is a vehicle, and if yes to both, activating a camera of the parking meter to obtain an image of the parking space; determining again whether the object is a vehicle by performing image and license plate recognition, and if yes, either prompting a parking enforcement officer to go to the parking space and issue a parking ticket or issuing the parking ticket automatically; updating the parking meter after the parking ticket is issued; and reducing the detection frequency. The method is labor-saving and reduces power consumption by the parking meter.Type: ApplicationFiled: March 19, 2019Publication date: October 3, 2019Inventor: WEI CHI HUANG
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Patent number: 9843268Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: GrantFiled: April 9, 2014Date of Patent: December 12, 2017Assignee: ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD.Inventors: Chung-Ping Ku, Wei-Chi Huang
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Patent number: 9742276Abstract: The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.Type: GrantFiled: August 27, 2015Date of Patent: August 22, 2017Assignee: Alpha & Omega Semiconductor (Cayman), Ltd.Inventors: Kong Soon Ng, Wei-Chi Huang, Jean-Shin Wu
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Patent number: 9577518Abstract: The present invention discloses a voltage control method. First, the load voltage of the load is divided to generate a feedback voltage. Then, an absolute value of a periodic triangular wave signal is retrieved to generate a positive feedback signal, which and the feedback voltage are then combined to produce a sum signal. The sum signal is then compared with a target voltage and when the sum signal is less than the target voltage, a control signal is generated and thus the load voltage is updated and stabilized using an input voltage. In an alternative method, the feedback voltage and the periodic triangular wave signal are combined to generate a sum signal, which is compared with the target voltage. When sum signal is less than the target voltage, a control signal is generated and thus the load voltage is for updated and stabilized using an input voltage.Type: GrantFiled: August 14, 2014Date of Patent: February 21, 2017Assignee: Alpha & Omega Semiconductor (Cayman), Ltd.Inventors: Kong Soon Ng, Wei-Chi Huang, Jean-Shin Wu
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Publication number: 20150372595Abstract: The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.Type: ApplicationFiled: August 27, 2015Publication date: December 24, 2015Applicant: ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD.Inventors: Kong Soon Ng, Wei-Chi Huang, Jean-Shin Wu
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Patent number: 9154034Abstract: The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.Type: GrantFiled: August 13, 2014Date of Patent: October 6, 2015Assignee: Alpha and Omega Semiconductor (Cayman), Ltd.Inventors: Kong Soon Ng, Wei-Chi Huang, Jean-Shin Wu
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Publication number: 20150244264Abstract: The present invention discloses a voltage control method. First, the load voltage of the load is divided to generate a feedback voltage. Then, an absolute value of a periodic triangular wave signal is retrieved to generate a positive feedback signal, which and the feedback voltage are then combined to produce a sum signal. The sum signal is then compared with a target voltage and when the sum signal is less than the target voltage, a control signal is generated and thus the load voltage is updated and stabilized using an input voltage. In an alternative method, the feedback voltage and the periodic triangular wave signal are combined to generate a sum signal, which is compared with the target voltage. When sum signal is less than the target voltage, a control signal is generated and thus the load voltage is for updated and stabilized using an input voltage.Type: ApplicationFiled: August 14, 2014Publication date: August 27, 2015Inventors: Kong Soon Ng, Wei-Chi Huang, Jean-Shin Wu
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Publication number: 20150244263Abstract: The present invention discloses a voltage control method. At first, the load voltage of the load is divided to generate a feedback voltage. The feedback voltage and a triangular wave of a triangular wave periodic signal, including the positive voltage and negative voltage, are combined to generate a sum signal. The sum signal is compared with a target voltage, and when the sum signal is less than the target voltage signal, a control signal is generated to control the switches to turn on or off. Finally, the switch receives the control signal and accordingly providing an input voltage to update and stabilize the load voltage.Type: ApplicationFiled: August 13, 2014Publication date: August 27, 2015Inventors: Kong Soon Ng, Wei-Chi Huang, Jean-Shin Wu
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Patent number: 9113506Abstract: A circuit with adjustable phase delay and a feedback voltage includes a delay setting unit and a phase delay signal generator. The delay setting unit generates a delay time according to an external resistor. The phase delay signal generator includes a plurality of phase delay units. Each phase delay unit includes an edge trigger subunit and a signal generation subunit. The edge trigger subunit receives an input signal, and generates a positive edge trigger signal and a negative edge trigger signal according to a positive edge and a negative edge of the input signal, respectively. The signal generation subunit generates and outputs a phase delay signal according to the positive edge trigger signal, the negative edge trigger signal, and the delay time. The phase delay signal lags the input signal for the delay time.Type: GrantFiled: March 14, 2013Date of Patent: August 18, 2015Assignee: Leadtrend Technology Corp.Inventors: Hung-Ching Lee, Yeu-Torng Yau, Wei-Chi Huang
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Patent number: 9101033Abstract: Short protection control circuits and related control methods are disclosed. A disclosed short protection control circuit is adapted for controlling a short protection mechanism providing short protection to several LED chains. The disclosed short protection control circuit has a detection circuit, a first logic circuit and a timer. Coupled to the LED chains, the detection circuit asserts an indication signal when one of the node voltages of the LED chains is lower than an under-current reference. When the indication signal is enabled, the first logic circuit starts blocking the short protection mechanism. The timer times to provide a result when the short protection mechanism is blocked. When the result indicates that the short protection mechanism has been blocked for at least a predetermined time period, the first logic circuit resumes the short protection mechanism.Type: GrantFiled: November 1, 2012Date of Patent: August 4, 2015Assignee: Leadtrend Technology Corp.Inventors: Chung-Wei Lin, Hung-Ching Lee, Wei-Chi Huang, Tsung-Liang Hung, Pai-Feng Liu
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Publication number: 20150028752Abstract: A control circuit of light emitting diodes is used for driving at least one series of light emitting diodes. The control circuit includes a current setting pin, a driving current generator, a regulator circuit, and an adjuster. A reference current flows through the current setting pin. The driving current generator is used for generating a driving current flowing through the series of light emitting diodes according to the reference current. The adjuster generates an adjustment voltage according to the reference current. Then, the regulator circuit generates a supply voltage to drive the series of light emitting diodes, and regulates a voltage of a first terminal of the series of light emitting diodes at a target voltage according to the adjustment voltage. The target voltage is increased with decrease of the driving current when the driving current is less than a first predetermined current.Type: ApplicationFiled: July 21, 2014Publication date: January 29, 2015Inventors: Yeu-Torng Yau, Wei-Chi Huang, Hung-Ching Lee, Chung-Wei Lin, Wei-Wen Ou
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Publication number: 20140218990Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: Alpha and Omega Semiconductor IncorporatedInventors: Chung-Ping Ku, Wei-Chi Huang
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Patent number: 8716985Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: GrantFiled: February 29, 2012Date of Patent: May 6, 2014Assignee: Alpha & Omega Semiconductor, Inc.Inventors: Chung-Ping Ku, Wei-Chi Huang
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Publication number: 20140042924Abstract: A circuit with adjustable phase delay and a feedback voltage includes a delay setting unit and a phase delay signal generator. The delay setting unit generates a delay time according to an external resistor. The phase delay signal generator includes a plurality of phase delay units. Each phase delay unit includes an edge trigger subunit and a signal generation subunit. The edge trigger subunit receives an input signal, and generates a positive edge trigger signal and a negative edge trigger signal according to a positive edge and a negative edge of the input signal, respectively. The signal generation subunit generates and outputs a phase delay signal according to the positive edge trigger signal, the negative edge trigger signal, and the delay time. The phase delay signal lags the input signal for the delay time.Type: ApplicationFiled: March 14, 2013Publication date: February 13, 2014Applicant: LEADTREND TECHNOLOGY CORP.Inventors: Hung-Ching Lee, Yeu-Torng Yau, Wei-Chi Huang