Patents by Inventor Vincent Leung
Vincent Leung 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: 20230285768Abstract: A portable therapeutic device and a method. The device includes an energy storage device coupled to a power supply. The energy storage device operates during a predetermined number of charge-discharge cycles. During a charge portion of each charge-discharge cycle, the energy storage device receives and stores energy from the power supply. During a discharge portion of each charge-discharge cycle, the energy storage device discharges stored energy. The device also includes a magnetic field generation device coupled to the energy storage device to repeatedly generate one or more magnetic field pulses during a predetermined period of time during the discharge portion of each charge-discharge cycle of the energy storage device. Each magnetic field pulse has a predetermined magnetic field strength. The generated magnetic field pulses cause generation of an electric field having a predetermined strength, thereby generating a desired therapeutic effect in a subject.Type: ApplicationFiled: July 16, 2021Publication date: September 14, 2023Inventors: Kevin Murphy, Vincent Leung, Peter Asbeck, Mark Stambaugh, Milan Makale, David Gough, Shaghayegh Abbasi
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Publication number: 20180274854Abstract: Systems and methods for recovering light hydrocarbons from refinery waste gas using a back-end turboexpander to generate a higher recovery of the light hydrocarbons for use as petrochemical feedstock and to remove the liquid light hydrocarbons before entering the turboexpander.Type: ApplicationFiled: December 18, 2015Publication date: September 27, 2018Inventors: Berj Garbouchian, Sudhir Golikeri, Jie Yu, Vincent Leung
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Publication number: 20180137660Abstract: Data regarding a base digital image and a request to generate one or more customized digital stickers for the base digital image can be received. In response to the received request, a customized digital sticker can be generated for the base digital image using results of analysis of the data regarding the base digital image, with the customized sticker including multiple visual features. The generating can include generating a customized digital sticker using a set of sticker generation rules, with the layout of multiple visual features of the digital sticker being dictated by the sticker generation rules, and with the generating of the sticker including combining the multiple visual features in the digital sticker. The digital sticker can be overlaid on the base digital image to produce a composite digital image.Type: ApplicationFiled: November 11, 2016Publication date: May 17, 2018Applicant: Microsoft Technology Licensing, LLCInventors: Juan Carlos De Abreu Rodriguez, Wallace E. Greathouse, Li Zhang, Soohoon Cho, Shannon Kao, Vincent Leung, Arun Sacheti
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Patent number: 9723560Abstract: An apparatus includes a first amplifier stage configured to amplify a first carrier signal. The apparatus includes a second amplifier stage configured to amplify a second carrier signal. A resistive-capacitive (RC) network is coupled to the first amplifier stage and to the second amplifier stage. The RC network includes a resistive element coupled to a capacitive element.Type: GrantFiled: March 4, 2015Date of Patent: August 1, 2017Assignee: QUALCOMM IncorporatedInventors: Ahmed Abdel Monem Youssef, Wingching Vincent Leung, Rui Xu, Udara Charman Fernando, Ketan Humnabadkar, Tsai-Chen Huang, Li-Chung Chang
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Publication number: 20170176097Abstract: Systems and methods for recovering light hydrocarbons from refinery waste gas using a back-end turboexpander to generate a higher recovery of the light hydrocarbons for use as petrochemical feedstock and to remove the liquid light hydrocarbons before entering the turboexpander.Type: ApplicationFiled: June 13, 2016Publication date: June 22, 2017Inventors: Berj Garbouchian, Sudhir Golikeri, Jie Yu, Vincent Leung
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Patent number: 9642166Abstract: An apparatus includes a first amplifier circuit and a second amplifier circuit. The first amplifier circuit has a first output coupled to a first load circuit in a multi-output mode, and the second amplifier circuit has a second output coupled to a second load circuit in the multi-output mode. The apparatus further includes a first divert circuit and a second divert circuit. The first divert circuit is configured to divert a first portion of a first amplified signal from the first amplifier circuit to the second load circuit in the multi-output mode. The second divert circuit is configured to divert a first portion of a second amplified signal from the second amplifier circuit to the first load circuit in the multi-output mode.Type: GrantFiled: March 10, 2015Date of Patent: May 2, 2017Assignee: Qualcomm IncorporatedInventors: Sang Hyun Woo, Wingching Vincent Leung, Li-Chung Chang
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Patent number: 9467104Abstract: A device includes at least one first amplifier circuit configurable to receive and amplify an input radio frequency (RF) signal having a first carrier at a first input signal level and provide a first amplified RF signal, and at least one second amplifier circuit configurable to receive and amplify the input RF signal having a second carrier at a second input signal level and provide a second amplified RF signal, the at least one first amplifier circuit having a first input impedance, the at least one second amplifier circuit having a second input impedance.Type: GrantFiled: March 28, 2014Date of Patent: October 11, 2016Assignee: Qualcomm IncorporatedInventors: Rui Xu, Allen He, Wingching Vincent Leung, Ahmed Abdel Monem Youssef, Ehab Ahmed Sobhy Abdel Ghany, Sang Hyun Woo, Li-Chung Chang
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Patent number: 9425746Abstract: A device includes an amplifier circuit comprising a plurality of amplification paths, and at least one switchable bypass capacitance coupled to an associated shared power distribution network, the at least one switchable bypass capacitance and at least one of the plurality of amplification paths responsive to a control signal configured to selectively ground the at least one switchable bypass capacitance and selectively enable the at least one of the amplification paths based on a selected operating mode.Type: GrantFiled: March 28, 2014Date of Patent: August 23, 2016Assignee: Qualcomm IncorporatedInventors: Mehmet Uzunkol, Rui Xu, Ahmed Abdel Monem Youssef, Wingching Vincent Leung, Ehab Ahmed Sobhy Abdel Ghany, Allen He, Sang Hyun Woo, Li-Chung Chang
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Patent number: 9425832Abstract: A device includes a first amplifier circuit coupled to a first transformer and a second transformer, the first transformer selectively coupled to a first shared power distribution network through a first switch, the second transformer selectively coupled to a second shared power distribution network through a second switch.Type: GrantFiled: April 18, 2014Date of Patent: August 23, 2016Assignee: Qualcomm IncorporatedInventors: Ahmed Abdel Monem Youssef, Mehmet Uzunkol, Rui Xu, Ehab Ahmed Sobhy Abdel Ghany, Wingching Vincent Leung, Sang Hyun Woo, Allen He, Li-Chung Chang
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Patent number: 9277641Abstract: Techniques for routing and shielding signal lines to improve isolation between the signal lines are disclosed. In an exemplary design, an apparatus includes first, second, and third signal lines and a switch. The first, second, and third signal lines are configurable to carry first, second, and third signals, respectively. The switch is coupled between the second signal line and AC ground and is closed when the second signal line is not carrying the second signal. The second signal line isolates the first and third signal lines when the switch is closed. Adjacent signal lines are not active at the same time. A signal line may include positive and negative signal lines, which may have at least one cross over in order to cancel coupling between the positive and negative signal lines.Type: GrantFiled: April 4, 2013Date of Patent: March 1, 2016Assignee: Qualcomm IncorporatedInventors: Ahmed Abdel Monem Youssef, Li-Chung Chang, Ehab Ahmed Sobhy Abdel Ghany, Rui Xu, Wingching Vincent Leung, Allen He
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Publication number: 20150351131Abstract: An apparatus includes a first amplifier circuit and a second amplifier circuit. The first amplifier circuit has a first output coupled to a first load circuit in a multi-output mode, and the second amplifier circuit has a second output coupled to a second load circuit in the multi-output mode. The apparatus further includes a first divert circuit and a second divert circuit. The first divert circuit is configured to divert a first portion of a first amplified signal from the first amplifier circuit to the second load circuit in the multi-output mode. The second divert circuit is configured to divert a first portion of a second amplified signal from the second amplifier circuit to the first load circuit in the multi-output mode.Type: ApplicationFiled: March 10, 2015Publication date: December 3, 2015Inventors: Sang Hyun Woo, Wingching Vincent Leung, Li-Chung Chang
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Publication number: 20150341859Abstract: An apparatus includes a first amplifier stage configured to amplify a first carrier signal. The apparatus includes a second amplifier stage configured to amplify a second carrier signal. A resistive-capacitive (RC) network is coupled to the first amplifier stage and to the second amplifier stage. The RC network includes a resistive element coupled to a capacitive element.Type: ApplicationFiled: March 4, 2015Publication date: November 26, 2015Inventors: Ahmed Abdel Monem Youssef, Wingching Vincent Leung, Rui Xu, Udara Charman Fernando, Ketan Humnabadkar, Tsai-Chen Huang, Li-Chung Chang
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Publication number: 20150280661Abstract: A device includes at least one first amplifier circuit configurable to receive and amplify an input radio frequency (RF) signal having a first carrier at a first input signal level and provide a first amplified RF signal, and at least one second amplifier circuit configurable to receive and amplify the input RF signal having a second carrier at a second input signal level and provide a second amplified RF signal, the at least one first amplifier circuit having a first input impedance, the at least one second amplifier circuit having a second input impedance.Type: ApplicationFiled: March 28, 2014Publication date: October 1, 2015Applicant: QUALCOMM IncorporatedInventors: Rui Xu, Allen He, Wingching Vincent Leung, Ahmed Abdel Monem Youssef, Ehab Ahmed Sobhy Abdel Ghany, Sang Hyun Woo, Li-Chung Chang
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Publication number: 20150280651Abstract: A device includes an amplifier circuit comprising a plurality of amplification paths, and at least one switchable bypass capacitance coupled to an associated shared power distribution network, the at least one switchable bypass capacitance and at least one of the plurality of amplification paths responsive to a control signal configured to selectively ground the at least one switchable bypass capacitance and selectively enable the at least one of the amplification paths based on a selected operating mode.Type: ApplicationFiled: March 28, 2014Publication date: October 1, 2015Applicant: QUALCOMM IncorporatedInventors: Mehmet Uzunkol, Rui Xu, Ahmed Abdel Monem Youssef, Wingching Vincent Leung, Ehab Ahmed Sobhy Abdel Ghany, Allen He, Sang Hyun Woo, Li-Chung Chang
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Patent number: 9130529Abstract: A device includes a first and a second low noise amplifier (LNA), a first degenerative inductance coupled between the first LNA and ground by a first ground connection, and a second degenerative inductance coupled between the second LNA and ground by a second ground connection, the first and second degenerative inductances configured to establish negative inductive coupling between the first and second degenerative inductances.Type: GrantFiled: January 17, 2014Date of Patent: September 8, 2015Assignee: Qualcomm IncorporatedInventors: Ehab Ahmed Sobhy Abdel Ghany, Sang Hyun Woo, Wingching Vincent Leung, Zhang Jin, Li-Chung Chang
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Publication number: 20150207482Abstract: A device includes a first and a second low noise amplifier (LNA), a first degenerative inductance coupled between the first LNA and ground by a first ground connection, and a second degenerative inductance coupled between the second LNA and ground by a second ground connection, the first and second degenerative inductances configured to establish negative inductive coupling between the first and second degenerative inductances.Type: ApplicationFiled: January 17, 2014Publication date: July 23, 2015Applicant: QUALCOMM IncorporatedInventors: Ehab Ahmed Sobhy Abdel Ghany, Sang Hyun Woo, Wingching Vincent Leung, Zhang Jin, Li-Chung Chang
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Publication number: 20150200690Abstract: A device includes a first amplifier circuit coupled to a first transformer and a second transformer, the first transformer selectively coupled to a first shared power distribution network through a first switch, the second transformer selectively coupled to a second shared power distribution network through a second switch.Type: ApplicationFiled: April 18, 2014Publication date: July 16, 2015Applicant: QUALCOMM IncorporatedInventors: Ahmed Abdel Monem Youssef, Mehmet Uzunkol, Rui Xu, Ehab Ahmed Sobhy Abdel Ghany, Wingching Vincent Leung, Sang Hyun Woo, Allen He, Li-Chung Chang
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Patent number: 8903343Abstract: Amplifiers with multiple outputs and separate gain control per output are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) may include first and second amplifier circuits. The first amplifier circuit may receive and amplify an input radio frequency (RF) signal based on a first variable gain and provide a first amplified RF signal. The second amplifier circuit may receive and amplify the input RF signal based on a second variable gain and provide a second amplified RF signal. The input RF signal may include a plurality of transmitted signals being received by the wireless device. The first variable gain may be adjustable independently of the second variable gain. Each variable gain may be set based on the received power level of at least one transmitted signal being received by the wireless device.Type: GrantFiled: January 25, 2013Date of Patent: December 2, 2014Assignee: QUALCOMM IncorporatedInventors: Christian Holenstein, Aleksandar Miodrag Tasic, Li-Chung Chang, Allen He, Rui Xu, Ehab Ahmed Sobhy Abdel Ghany, Wingching Vincent Leung, Ahmed Abdel Monem Youssef, Sang Hyun Woo
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Patent number: 8803568Abstract: An apparatus for dividing a frequency by 1.5 to produce a quadrature signal is disclosed. The apparatus includes a divider that receives a differential input signal with a first frequency and two phases and creates a six-phase signal at a second frequency. The second frequency is the first frequency divided by 3. The apparatus also includes precision phase rotation circuitry that receives the six-phase signal and produces an eight-phase signal. The apparatus also includes a doubler that receives the eight-phase signal and produces a quadrature signal. The quadrature signal has a third frequency that is the first frequency divided by 1.5.Type: GrantFiled: October 16, 2012Date of Patent: August 12, 2014Assignee: QUALCOMM IncorporatedInventors: Wingching Vincent Leung, Zixiang Yang
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Patent number: 8774874Abstract: Although the duplexer in a full-duplex transceiver circuit may only be guaranteed by the duplexer manufacturer to have a transmit band rejection from its TX port to its RX port of a certain amount, and may only be guaranteed to have a receive band rejection of another amount, the actual transmit band rejection and the actual receive band rejection of a particular instance of the duplexer may be better than specified. Rather than consuming excess power in the receiver and/or transmitter in order to meet performance requirements assuming the duplexer only performs as well as specified, the duplexer's in-circuit performance is measured as part of a transmitter-to-receiver isolation determination. Transmitter and/or receiver power settings are reduced where possible to take advantage of the measured better-than-specified in-circuit duplexer performance, while still meeting transceiver performance requirements. Power settings are not changed during normal transmit and receive mode operation.Type: GrantFiled: June 4, 2010Date of Patent: July 8, 2014Assignee: QUALCOMM IncorporatedInventors: Prasad S. Gudem, Bhushan Asuri, Soon-Seng Lau, Wingching Vincent Leung