Patents by Inventor Hao Meng
Hao Meng 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: 20180048272Abstract: Provided is a power supply circuit for a wireless mobile device having a plurality of power amplification components. The power supply circuit includes: a first DC-DC converter, for providing at least one constant output voltage (which is provided to the power amplification components) and/or at least one DC intermediate voltage; a second DC-DC converter, for providing a DC component of at least one time-varying output voltage; and at least one linear amplifier. When the at least one linear amplifier receives the at least one DC intermediate voltage from the first DC-DC converter, the at least one linear amplifier provides at least one AC component of the at least one time-varying output voltage. The DC component and the at least one AC component of the at least one time-varying output voltage are combined into the at least one time-varying output voltage and provided to the power amplification components.Type: ApplicationFiled: April 20, 2017Publication date: February 15, 2018Inventors: Shih-Mei Lin, Chien-Wei Kuan, Chen-Yen Ho, Che-Hao Meng, Tso-Min Chen, Chia-Sheng Peng, Sheng-Hong Yan
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Patent number: 9866235Abstract: Digital to analog converters have first and second to analog arrays. The first digital to analog array has a reference input, a reference output, a first digital input that is connectable to a digital signal, and an analog output. The second digital to analog array includes a reference input, a reference output that is coupled to the reference input of the first digital to analog array, a plurality of switches coupled to the reference input, and a plurality of resistors coupled between the switches and the reference output.Type: GrantFiled: May 6, 2014Date of Patent: January 9, 2018Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Zhang Jun, Zhang ZeFei, Su Anzhe, Hao Meng, Xianguang Wen, Xuan Wang
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Patent number: 9866119Abstract: A DC-DC converter includes an inductor, a switch module, a pull-up circuit and a pull-down circuit. The inductor has a first node and a second node, and the second node is coupled to an output node of the DC-DC converter. The switch module is arranged for selectively connecting an input voltage or a ground voltage to the first node of the inductor according to a driving signal. The pull-up circuit is arranged for selectively providing a first current to the output node of the DC-DC converter. The pull-down circuit is arranged for selectively sinking a second current from the output node of the DC-DC converter. In addition, at least one of the first current provided by the pull-up circuit and the second current sunk by the pull-down circuit is determined based on an inductor current flowing through the inductor.Type: GrantFiled: July 5, 2016Date of Patent: January 9, 2018Assignee: MEDIATEK INC.Inventors: Shih-Mei Lin, Chien-Wei Kuan, Chien-Lung Lee, Che-Hao Meng
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Patent number: 9811229Abstract: A touch sensor apparatus includes a grid of intersecting sensor lines, a plurality of input/output (IO) pins, a plurality of diodes, a processor coupled to the IO pins. More specifically, each intersection includes a capacitor coupling together the intersecting sensor lines. Each diode is coupled to a corresponding IO pin, wherein each IO pin couples through its corresponding diode to a channel of intersection points of the sensor lines and, without the diode, each IO pin couples to a different channel of intersecting points of the sensor lines. The processor is configured to sequentially provide a transmit signal through each IO pin while detecting a response signal on the other IO pins.Type: GrantFiled: March 3, 2017Date of Patent: November 7, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Zhou Yi, Zhang Jun, Shen Ge, Xu Kang Cheng, Hao Meng, Ji Ru Jun
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Publication number: 20170222556Abstract: A DC-DC converter includes an inductor, a switch module, a pull-up circuit and a pull-down circuit. The inductor has a first node and a second node, and the second node is coupled to an output node of the DC-DC converter. The switch module is arranged for selectively connecting an input voltage or a ground voltage to the first node of the inductor according to a driving signal. The pull-up circuit is arranged for selectively providing a first current to the output node of the DC-DC converter. The pull-down circuit is arranged for selectively sinking a second current from the output node of the DC-DC converter. In addition, at least one of the first current provided by the pull-up circuit and the second current sunk by the pull-down circuit is determined based on an inductor current flowing through the inductor.Type: ApplicationFiled: July 5, 2016Publication date: August 3, 2017Inventors: Shih-Mei Lin, Chien-Wei Kuan, Chien-Lung Lee, Che-Hao Meng
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Publication number: 20170194981Abstract: Digital to analog converters have first and second to analog arrays. The first digital to analog array has a reference input, a reference output, a first digital input that is connectable to a digital signal, and an analog output. The second digital to analog array includes a reference input, a reference output that is coupled to the reference input of the first digital to analog array, a plurality of switches coupled to the reference input, and a plurality of resistors coupled between the switches and the reference output.Type: ApplicationFiled: May 6, 2014Publication date: July 6, 2017Inventors: Zhang Jun, Zhang ZeFei, Su Anzhe, Hao Meng, Xianguang Wen, Xuan Wang
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Publication number: 20170177119Abstract: A touch sensor apparatus includes a grid of intersecting sensor lines, a plurality of input/output (IO) pins, a plurality of diodes, a processor coupled to the IO pins. More specifically, each intersection includes a capacitor coupling together the intersecting sensor lines. Each diode is coupled to a corresponding IO pin, wherein each IO pin couples through its corresponding diode to a channel of intersection points of the sensor lines and, without the diode, each IO pin couples to a different channel of intersecting points of the sensor lines. The processor is configured to sequentially provide a transmit signal through each IO pin while detecting a response signal on the other IO pins.Type: ApplicationFiled: March 3, 2017Publication date: June 22, 2017Inventors: Zhou Yi, Zhang Jun, Shen Ge, Xu Kang Cheng, Hao Meng, Ji Ru Jun
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Patent number: 9589616Abstract: Memory cell, method for operating the memory cell and method for fabricating the memory cell are disclosed. The memory cell includes at least three terminals, a first magnetic tunnel junction (MTJ) structure and a second MTJ structure. The first MTJ is coupled between a first terminal (FT) and a third terminal. A portion of the first MTJ is configured to include a first barrier layer disposed between a first fixed layer and a free layer (FL). A magnetization direction of the FL is used to store data, the magnetization direction being controlled by an electric field. The second MTJ is coupled between the FT and a second terminal, where a portion of the second MTJ is configured to include a second barrier layer disposed between a second fixed layer and the FL, where a tunnel magnetoresistance of the second barrier layer is used to read the data.Type: GrantFiled: October 30, 2015Date of Patent: March 7, 2017Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Hao Meng, Yong Wee Francis Poh, Tze Ho Simon Chan
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Patent number: 9570990Abstract: A knee voltage detector for a flyback converter is provided. The knee voltage detector comprises a delay unit, for delaying an auxiliary related voltage for a specific period, to generate a delay signal; a subtracting unit, for generating a subtraction signal according to the auxiliary related voltage and the delay signal; a comparing unit, for generating a sampling signal when the subtraction signal indicates that a voltage difference between the auxiliary related voltage and the delay signal is greater than a threshold; and a sample and hold unit, for sampling the delay signal to generate a knee voltage according to the sampling signal when the voltage difference between the auxiliary related voltage and the delay signal is greater than the threshold.Type: GrantFiled: May 19, 2015Date of Patent: February 14, 2017Assignee: NOVATEK Microelectronics Corp.Inventors: Ke-Horng Chen, Chao-Chang Chiu, Hao-Yuan Lin, Che-Hao Meng, Chih-Wei Chang, Ying-Hsiang Wang
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Publication number: 20160211755Abstract: A knee voltage detector for a flyback converter is provided. The knee voltage detector comprises a delay unit, for delaying an auxiliary related voltage for a specific period, to generate a delay signal; a subtracting unit, for generating a subtraction signal according to the auxiliary related voltage and the delay signal; a comparing unit, for generating a sampling signal when the subtraction signal indicates that a voltage difference between the auxiliary related voltage and the delay signal is greater than a threshold; and a sample and hold unit, for sampling the delay signal to generate a knee voltage according to the sampling signal when the voltage difference between the auxiliary related voltage and the delay signal is greater than the threshold.Type: ApplicationFiled: May 19, 2015Publication date: July 21, 2016Inventors: Ke-Horng Chen, Chao-Chang Chiu, Hao-Yuan Lin, Che-Hao Meng, Chih-Wei Chang, Ying-Hsiang Wang
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Publication number: 20160139704Abstract: A touch sensor apparatus includes a grid of intersecting sensor lines, a plurality of input/output (IO) pins, a plurality of diodes, a processor coupled to the IO pins. More specifically, each intersection includes a capacitor coupling together the intersecting sensor lines. Each diode is coupled to a corresponding IO pin, wherein each IO pin couples through its corresponding diode to a channel of intersection points of the sensor lines and, without the diode, each IO pin couples to a different channel of intersecting points of the sensor lines. The processor is configured to sequentially provide a transmit signal through each IO pin while detecting a response signal on the other IO pins.Type: ApplicationFiled: March 16, 2015Publication date: May 19, 2016Inventors: Zhou YI, Zhang JUN, Shen GE, Xu Kang CHENG, Hao MENG, Ji Ru JUN
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Publication number: 20160125925Abstract: Memory cell, method for operating the memory cell and method for fabricating the memory cell are disclosed. The memory cell includes at least three terminals, a first magnetic tunnel junction (MTJ) structure and a second MTJ structure. The first MTJ is coupled between a first terminal (FT) and a third terminal. A portion of the first MTJ is configured to include a first barrier layer disposed between a first fixed layer and a free layer (FL). A magnetization direction of the FL is used to store data, the magnetization direction being controlled by an electric field. The second MTJ is coupled between the FT and a second terminal, where a portion of the second MTJ is configured to include a second barrier layer disposed between a second fixed layer and the FL, where a tunnel magnetoresistance of the second barrier layer is used to read the data.Type: ApplicationFiled: October 30, 2015Publication date: May 5, 2016Inventors: Hao MENG, Yong Wee Francis POH, Tze Ho Simon CHAN
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Patent number: 9317699Abstract: A technique for preventing malicious observance of private information includes receiving an instruction of entering a mode of inputting private information; determining a correspondence between actual inputs and expected inputs; receiving an actual user input; and converting the actual input into an expected input as private information inputted by the user according to the correspondence. This security technique can prevent discovery of the private information of a user through observation.Type: GrantFiled: November 25, 2013Date of Patent: April 19, 2016Assignee: International Business Machines CorporationInventors: Li Jun Jiang, Rui Lin, Hao Meng Wang, Qin Zhao
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Patent number: 9317700Abstract: A technique for preventing malicious observance of private information includes receiving an instruction of entering a mode of inputting private information; determining a correspondence between actual inputs and expected inputs; receiving an actual user input; and converting the actual input into an expected input as private information inputted by the user according to the correspondence. This security technique can prevent discovery of the private information of a user through observation.Type: GrantFiled: December 9, 2013Date of Patent: April 19, 2016Assignee: International Business Machines CorporationInventors: Li Jun Jiang, Rui Lin, Hao Meng Wang, Qin Zhao
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Publication number: 20160105096Abstract: A power factor correction (PFC) controller and a power supply apparatus using the same are provided. The PFC controller includes a driving signal generation circuit and a zero-current prediction circuit. The driving signal generation circuit generates a driving signal to drive a power switch according to a control signal, where the power switch is switched in response to the driving signal, so as to convert an input voltage into an output voltage. The zero-current prediction circuit is coupled to the driving signal generation circuit and performs a capacitance charge/discharge operation, and thus obtains a charge/discharge time characteristic related to a zero-current timing. The zero-current prediction circuit generates the control signal to control operation of the driving signal generation circuit according to the charge/discharge time characteristic.Type: ApplicationFiled: October 13, 2014Publication date: April 14, 2016Inventors: Ke-Horng Chen, Hsin-Yu Luo, Wen-Jiun Liu, Che-Hao Meng, Chih-Wei Chang
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Publication number: 20160026803Abstract: A technique for preventing malicious observance of private information includes presenting, via a graphical user interface, a visible input cue for user input. The visible input cues is associated with an expected input value that differs from the visible input cue. The technique further includes determining a correspondence between the visible input cue and the expected input value before the visible input cue is selected. The correspondence indicates how the visible input cues differs from the expected input value. The technique further includes generating an invisible output that indicates the correspondence between the visible input cue and the expected input value and detecting a selection of the visible input cue via the graphical user interface. The technique further includes using, as the user input, the expected input value instead of the visible input cue in response to the selection of the visible input cue.Type: ApplicationFiled: October 5, 2015Publication date: January 28, 2016Inventors: Li Jun Jiang, Rui Lin, Hao Meng Wang, Qin Zhao
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Publication number: 20150324030Abstract: A capacitive touch sensor is disclosed for use with input signal. The capacitive touch sensor includes a number n of input/output lines. Each of the number n of input/output lines is electrically disconnected from every other of the number n of input/output lines. Each of the number n of input/output lines is arranged to cross every other of the number n of input/output lines. Each of a number ? of positions, includes one of the number n of input/output lines crossing another of the number n of input/output lines.Type: ApplicationFiled: September 8, 2014Publication date: November 12, 2015Inventors: Zhang Jun, Shen Ge, Xu Kang Cheng, Zhou Yi, Hao Meng, Ji Ru Jun
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Patent number: 8964445Abstract: In an embodiment of the invention, a method is provided for isolating a ferroelectric memory from a power supply during a write-back cycle or a write cycle of the ferroelectric memory. After it is determined that a write-back cycle or a write cycle will occur in the ferroelectric memory, the power supply is electrically disconnected from the ferroelectric memory before a write-back cycle or a write cycle occurs. Energy during the write-back cycle or the write cycle is provided to the ferroelectric memory by one or more capacitors in this embodiment. After the write-back cycle or the write cycle has ended, the power supply is electrically connected to the ferroelectric memory and the capacitors.Type: GrantFiled: November 14, 2013Date of Patent: February 24, 2015Assignee: Texas Instruments IncorporatedInventors: Ge Shen, Norbert Reichel, Hao Meng, Xiaojiong Fe
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Publication number: 20150028440Abstract: According to embodiments of the present invention, a magnetoresistive device is provided. The magnetoresistive device includes a free magnetic layer structure having a magnetization orientation that is variable, and a spin orbit coupling structure including a tunnel barrier including a metal oxide, and a metal layer, wherein the tunnel barrier and the metal layer are arranged one over the other, wherein the spin orbit coupling structure is adapted to generate, in response to an applied current, a field to interact with the free magnetic layer structure for switching the magnetization orientation of the free magnetic layer structure. According to further embodiments of the present invention, a method of forming a magnetoresistive device is also provided.Type: ApplicationFiled: July 25, 2014Publication date: January 29, 2015Inventors: Ruisheng Liu, Hao Meng, Vinayak Bharat Naik, Cheow Hin Sim
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Patent number: 8816456Abstract: According to embodiments of the present invention, a magnetoresistive device is provided. The magnetoresistive device includes a fixed magnetic layer structure having a fixed magnetization orientation along a first easy axis, a free magnetic layer structure having a variable magnetization orientation along a second easy axis, and an offsetting magnetic layer structure having a magnetization orientation along an axis at least substantially non-parallel to at least one of the first easy axis or the second easy axis, wherein the fixed magnetic layer structure, the free magnetic layer structure and the offsetting magnetic layer structure are arranged one over the other. According to further embodiments of the present invention, a method of forming a magnetoresistive device is also provided.Type: GrantFiled: December 21, 2012Date of Patent: August 26, 2014Assignee: Agency for Science, Technology and ResearchInventors: Hao Meng, Rachid Sbiaa