Patents by Inventor Ming-Huang Liu
Ming-Huang Liu 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: 11882637Abstract: An operation method of a proximity sensor comprises: controlling a light-emitting element by a processing circuit. Such control includes a plurality of light source on and light source off operations. An optical sensor receives light and outputs a sensing signal corresponding to the intensity of the light. The processing circuit computes the sensing signal to produce a sensing result. The plurality of light source on and light source off operations includes a group having two light sources on operations and two light sources off operations. The two light sources on operations in the group or the two light sources off operations in the group are performed consecutively. In this way, the ambient light components of the light source on and off operations may cancel out each other to reduce the ambient light components contained in the sensing results.Type: GrantFiled: January 28, 2022Date of Patent: January 23, 2024Assignee: Sensortek Technology Corp.Inventors: Meng-Yong Lin, Ming-Huang Liu, Jer-Hau Hsu, Cheng-Feng Liu
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Patent number: 11509322Abstract: A light sensor circuit, which comprising a photodiode and a voltage follower. By setting the voltage follower to reduce the influence from the junction capacitance of the photodiode, a required time of a repeat integration module will not be influenced by the photodiode to efficiently keep the performance and the accuracy of the analog to digital converting device when the light sensor circuit is used to the analog to digital converting device in repeat operation.Type: GrantFiled: September 8, 2020Date of Patent: November 22, 2022Assignee: Sensortek Technology Corp.Inventors: Jer-Hau Hsu, Ming-Huang Liu, Kian-Fu Wong
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Publication number: 20220312570Abstract: An operation method of a proximity sensor comprises: controlling a light-emitting element by a processing circuit. Such control includes a plurality of light source on and light source off operations. An optical sensor receives light and outputs a sensing signal corresponding to the intensity of the light. The processing circuit computes the sensing signal to produce a sensing result. The plurality of light source on and light source off operations includes a group having two light sources on operations and two light sources off operations. The two light sources on operations in the group or the two light sources off operations in the group are performed consecutively. In this way, the ambient light components of the light source on and off operations may cancel out each other to reduce the ambient light components contained in the sensing results.Type: ApplicationFiled: January 28, 2022Publication date: September 29, 2022Inventors: MENG-YONG LIN, MING-HUANG LIU, JER-HAU HSU, CHENG-FENG LIU
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Patent number: 11116059Abstract: Disclosed is a proximity sensor operating method used in a proximity sensor comprising a light-emitting device. The method comprises: in a standby mode, when an output of the proximity sensor is a first sensing state, driving a driving current of the light-emitting device to comprise a first driving current; when the proximity sensor is triggered, a check mode is entered, the proximity sensor still outputs the first sensing state, and the driving current is switched to comprise a second driving current larger than the first driving current; and in the check mode, when the length of time/number of times of triggering the proximity sensor is larger than or equal to a threshold length/number, the output of the proximity sensor switches to the second sensing state, and returning to the standby mode in which the driving current comprises the first driving current.Type: GrantFiled: April 30, 2020Date of Patent: September 7, 2021Assignee: SensorTek technology Corp.Inventors: Meng-Yong Lin, Ming-Huang Liu
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Publication number: 20210250035Abstract: A light sensor circuit, which comprising a photodiode and a voltage follower. By setting the voltage follower to reduce the influence from the junction capacitance of the photodiode, a required time of a repeat integration module will not be influenced by the photodiode to efficiently keep the performance and the accuracy of the analog to digital converting device when the light sensor circuit is used to the analog to digital converting device in repeat operation.Type: ApplicationFiled: September 8, 2020Publication date: August 12, 2021Inventors: JER-HAU HSU, MING-HUANG LIU, KIAN-FU WONG
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Publication number: 20200367342Abstract: Disclosed is a proximity sensor operating method used in a proximity sensor comprising a light-emitting device. The method comprises: in a standby mode, when an output of the proximity sensor is a first sensing state, driving a driving current of the light-emitting device to comprise a first driving current; when the proximity sensor is triggered, a check mode is entered, the proximity sensor still outputs the first sensing state, and the driving current is switched to comprise a second driving current larger than the first driving current; and in the check mode, when the length of time/number of times of triggering the proximity sensor is larger than or equal to a threshold length/number, the output of the proximity sensor switches to the second sensing state, and returning to the standby mode in which the driving current comprises the first driving current.Type: ApplicationFiled: April 30, 2020Publication date: November 19, 2020Inventors: Meng-Yong Lin, Ming-Huang Liu
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Patent number: 9634682Abstract: An analog-to-digital module includes a sampling unit, for generating an output voltage between a positive output end and a negative output end according to a positive input voltage of a positive input end and a negative input voltage of a negative input end; a comparing unit, for generating a digital output signal according to magnitude relationship between the output voltage and a reference voltage; a variable current source, for generating a variable current according to the digital output signal at the negative input end in a first period according to a control signal; a measured current source, for generating a measured current at the negative input end; and an adjusting unit, for adjusting the output voltage according to the digital output signal in a second period according to the control signal; wherein the first period does not overlap the second period.Type: GrantFiled: February 23, 2016Date of Patent: April 25, 2017Assignee: SensorTek technology Corp.Inventors: Tso-Sheng Tsai, Jer-Hau Hsu, Wen-Cheng Chen, Ming-Huang Liu
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Patent number: 9478676Abstract: A light sensing device includes a substrate, a plurality of light sensing elements and a cover. The plurality of light sensing elements are disposed on the substrate for sensing light. The cover is utilized for sheltering the plurality of light sensing elements, wherein the cover includes a hole for passing the light. A set of the plurality of light sensing elements is selected to be enabled according to a location of the hole relative to the plurality of light sensing elements.Type: GrantFiled: November 20, 2014Date of Patent: October 25, 2016Assignee: SensorTek technology Corp.Inventors: Meng-Yong Lin, Feng-Jung Hsu, Ming-Huang Liu
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Publication number: 20150357483Abstract: A light sensing device includes a substrate, a plurality of light sensing elements and a cover. The plurality of light sensing elements are disposed on the substrate for sensing light. The cover is utilized for sheltering the plurality of light sensing elements, wherein the cover includes a hole for passing the light. A set of the plurality of light sensing elements is selected to be enabled according to a location of the hole relative to the plurality of light sensing elements.Type: ApplicationFiled: November 20, 2014Publication date: December 10, 2015Inventors: Meng-Yong Lin, Feng-Jung Hsu, Ming-Huang Liu
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Patent number: 9000345Abstract: The present invention provides an ambient light sensing module, which comprises a sawtooth signal generating circuit, an optical sensing unit, and a comparing unit. The sawtooth signal generating circuit produces a sawtooth signal. The optical sensing unit senses a light source and produces a light-sensing signal. The comparing unit produces a pulse-width modulation (PWM) signal related to the intensity of the light source according to the light-sensing signal and the sawtooth signal so that the PWM signal can be used as the control signal of the electronic device. The ambient light sensing module further comprises at least a fuse for determining a processing parameter. A signal processing unit processes the light-sensing signal according to the processing parameter for outputting a converting signal. The comparing unit compares the converting signal with the sawtooth signal for producing the PWM signal.Type: GrantFiled: May 26, 2011Date of Patent: April 7, 2015Assignee: Sitronix Technology Corp.Inventors: Ming-Huang Liu, Meng-Yung Lin
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Patent number: 8798582Abstract: The present invention discloses a mobile phone comprising a gravity sensor, a processor, and a memory. The gravity sensor senses inertia data along a specific direction, the processor couples with the gravity sensor and receives a output signal from the gravity sensor, and the memory stores at least one personal information and operates under the processor's control. When either the gravity sensor or the processor detects a vertical free-fall motion, the processor performs a information security process to lock the personal information to become inaccessible.Type: GrantFiled: December 6, 2012Date of Patent: August 5, 2014Assignee: Sitronix Technology Corp.Inventors: Wei-Chung Chang, Chia-Huang Lin, Ming-Huang Liu
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Publication number: 20140145734Abstract: The present invention provides a capacitor sensing circuit, comprising a driving unit, a switching unit, a differential integrator circuit, and a post-processing circuit. The driving unit is for providing driving signals and timing required by the capacitor sensing circuit, the switching unit switches signals according to two inverting timings, ?1 and ?2, the driving unit drives the capacitor sensing circuit, and together with the positive/negative input terminals of the differential integrator circuit, the signals are accumulated and integrated in both timing ?1 and ?2. The post-processing circuit receive the differential output of the differential integrator circuit for processing and/or utilizing the signals. The two timing signals are time-sharing signals in a period. Therefore, the capacitor sensing circuit is not effected by the common mode noise, and the accuracy and the sensibility are increased.Type: ApplicationFiled: March 12, 2013Publication date: May 29, 2014Applicant: SITRONIX TECHNOLOGY CORP.Inventors: Meng Yong LIN, Ming-Huang LIU, Wei Yang OU
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Patent number: 8730149Abstract: A method for backlight control includes: receiving a display synchronization signal; generating a backlight control signal according to the display synchronization signal; and driving a backlight source according to the backlight control signal. An apparatus for backlight control includes: a signal receiving circuit, for receiving a display synchronization signal; a control circuit, coupled to the signal receiving circuit, for generating a backlight control signal according to the display synchronization signal; and a driving circuit, coupled to the control circuit, for driving a backlight source according to the backlight control signal.Type: GrantFiled: August 11, 2009Date of Patent: May 20, 2014Assignee: ILI Technology Corp.Inventors: Wei-Shan Chiang, Meng-Yong Lin, Wei-Yang Ou, Chen-Hsien Han, Ming-Huang Liu
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Patent number: 8704695Abstract: The present invention provides an analog-to-digital converter, which comprises an integration circuit, a threshold signal generating circuit, a main comparison circuit, a sub comparison circuit, a counter, and a decoder. The integration circuit integrates an input signal and produces an integration signal. The threshold signal generating circuit generates a main threshold signal and a plurality of sub threshold signals. The main comparison circuit produces a plurality of main comparison signals according the integration signal and the main threshold signal. The sub comparison circuit produces a plurality of sub comparison signals according to the integration signal and the plurality of sub threshold signals. The counter counts the plurality of main comparison signals and produces a first counting signal. The decoder decodes the plurality of sub comparison signals and produces a second count signal. The first count signal and the second count signal are used for producing a digital signal.Type: GrantFiled: November 21, 2012Date of Patent: April 22, 2014Assignee: Sitronix Technology Corp.Inventors: Ming-Huang Liu, Wei-Yang Ou
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Publication number: 20120313891Abstract: The present invention discloses a distance sensing circuit and a touch-control electronic apparatus. The touch-control electronic apparatus includes a distance sensing circuit. The distance sensing circuit comprises a distance sensing unit, a capacitive sensing unit, and an operation unit. The distance sensing unit senses the distance between an object and the touch-control electronic apparatus and generates a first sensing signal. The capacitive sensing unit generates a second sensing signal corresponding to the object. The operation unit judges the distance between the touch-control electronic apparatus and the object according to the first and the second sensing signals. The touch-control electronic apparatus according to the present invention can truly judge the distance between itself and the object by means of the distance sensing unit and the capacitive sensing unit for controlling touch-control functions of the touch-control electronic apparatus.Type: ApplicationFiled: June 6, 2012Publication date: December 13, 2012Applicant: SITRONIX TECHNOLOGY CORPInventors: WEI-CHUNG CHANG, CHIA-HUANG LIN, MING-HUANG LIU
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Patent number: 8264394Abstract: The present invention relates to an analog-to-digital converting circuit, which comprises an integrating circuit, a reference signal generating circuit, a comparator, and a first counting circuit. The integrating circuit integrates an input signal for producing an integration signal. The reference signal generating circuit produces a plurality of reference signals. The comparator receives the integration signal and the plurality of reference signals, and compares the integration signal to the plurality of reference signals sequentially for producing a plurality of comparison signals. The first counting circuit receives the plurality of comparison signals produced by the comparator, and starts to count the plurality of comparison signals for producing a reset signal and resetting the integrating circuit.Type: GrantFiled: August 9, 2010Date of Patent: September 11, 2012Assignee: Sitronix Technology Corp.Inventor: Ming-Huang Liu
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Publication number: 20110291870Abstract: The present invention relates to an analog-to-digital converting circuit, which comprises an integrating circuit, a reference signal generating circuit, a comparator, and a first counting circuit. The integrating circuit integrates an input signal for producing an integration signal. The reference signal generating circuit produces a plurality of reference signals. The comparator receives the integration signal and the plurality of reference signals, and compares the integration signal to the plurality of reference signals sequentially for producing a plurality of comparison signals. The first counting circuit receives the plurality of comparison signals produced by the comparator, and starts to count the plurality of comparison signals for producing a reset signal and resetting the integrating circuit.Type: ApplicationFiled: August 9, 2010Publication date: December 1, 2011Applicant: SITRONIX TECHNOLOGY CORP.Inventor: MING-HUANG LIU
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Publication number: 20110290987Abstract: The present invention provides an ambient light sensing module, which comprises a sawtooth signal generating circuit, an optical sensing unit, and a comparing unit. The sawtooth signal generating circuit produces a sawtooth signal. The optical sensing unit senses a light source and produces a light-sensing signal. The comparing unit produces a pulse-width modulation (PWM) signal related to the intensity of the light source according to the light-sensing signal and the sawtooth signal so that the PWM signal can be used as the control signal of the electronic device. The ambient light sensing module further comprises at least a fuse for determining a processing parameter. A signal processing unit processes the light-sensing signal according to the processing parameter for outputting a converting signal. The comparing unit compares the converting signal with the sawtooth signal for producing the PWM signal.Type: ApplicationFiled: May 26, 2011Publication date: December 1, 2011Applicant: SITRONIX TECHNOLOGY CORP.Inventors: MING-HUANG LIU, MENG-YUNG LIN
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Publication number: 20100321285Abstract: A method for backlight control includes: receiving a display synchronization signal; generating a backlight control signal according to the display synchronization signal; and driving a backlight source according to the backlight control signal. An apparatus for backlight control includes: a signal receiving circuit, for receiving a display synchronization signal; a control circuit, coupled to the signal receiving circuit, for generating a backlight control signal according to the display synchronization signal; and a driving circuit, coupled to the control circuit, for driving a backlight source according to the backlight control signal.Type: ApplicationFiled: August 11, 2009Publication date: December 23, 2010Inventors: Wei-Shan Chiang, Meng-Yong Lin, Wei-Yang Ou, Chen-Hsien Han, Ming-Huang Liu
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Patent number: 7770950Abstract: The present invention provides an assembled set of chopsticks, having a handle, a cover, a link locator and a gripping portion. The link locator has a stepped tube and a screwed positioning seat. A frictional flange is arranged externally at the central section of the stepped tube's embedding section of the link locator and is frictionally mated with the handle's bottom port. A frictional ring surface is protruded at the central section of the external wall of the screwed positioning seat external wall and also frictionally mated with the stepped tube's through-hole, enabling the link locator to be assembled more stably and smoothly. The gripping bottom is provided with both an axial groove and skid ring groove, the gripping area and frictional effect being increased for a better gripping stability without slippage.Type: GrantFiled: May 10, 2009Date of Patent: August 10, 2010Inventor: Ming-Huang Liu