Patents by Inventor Yonghua Song
Yonghua Song 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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OPERATING RESERVE QUANTIFICATION METHOD FOR POWER SYSTEMS USING PROBABILISTIC WIND POWER FORECASTING
Publication number: 20220300868Abstract: The present invention discloses an operating reserve quantification method for power systems using probabilistic wind power forecasting and belongs to the field of power system operation optimization. This method constructs an operating reserve optimization model of power systems using probabilistic wind power forecasting, which utilizes extreme learning machine to output non-parametric prediction intervals of wind power and determines the positive and negative operating reserve requirements of the system by upper and lower boundaries of the prediction intervals. The cost-benefit trade-offs of reserve decision are realized by taking reserve provision cost and deficit penalty as a loss function of machine learning. The resultant reserve decision can effectively reduce system operation cost on the premise of ensuring good reliability.Type: ApplicationFiled: April 12, 2022Publication date: September 22, 2022Inventors: Can Wan, Changfei Zhao, Yonghua Song -
Publication number: 20220209532Abstract: The present application discloses a chance constrained extreme learning machine method for nonparametric interval forecasting of wind power, which belongs to the field of renewable energy generation forecasting. The method combines an extreme learning machine with a chance constrained optimization model, ensures that the interval coverage probability is no less than the confidence level by chance constraint, and takes minimizing the interval width as the training objective. The method avoids relying on the probability distribution hypothesis or limiting the interval boundary quantile level, so as to directly construct prediction intervals with well reliability and sharpness. The present application also proposes a bisection search algorithm based on difference of convex functions optimization to achieve efficient training for the chance constrained extreme learning machine.Type: ApplicationFiled: March 15, 2022Publication date: June 30, 2022Inventors: Can WAN, Changfei ZHAO, Yonghua SONG
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Publication number: 20190385067Abstract: An automatic reliability analysis method for a warm standby system based on a multi-state decision diagram is provided. A multi-state model is constructed for the system with multi-state components; then, according to possible state transitions of every component in the system, the multi-state decision diagram is constructed. Through construction, simplification and decomposition of the multi-state decision diagram, an occurrence probability of each path in the multi-state decision diagram is obtained with integral operation. The occurrence probability of each path in the multi-state decision diagram is further calculated with considering a failure probability of activation of the warm standby components, so as to obtain system reliability. The present invention takes the warm standby system with the multi-state components as an object, and is able to programmatically process the multi-state components whose state transitions follow arbitrary distributions with high accuracy and fast computing speed.Type: ApplicationFiled: July 4, 2017Publication date: December 19, 2019Inventors: Yi Ding, Heping Jia, Hanlin Liu, Rui Peng, Yonghua Song, Chuangxin Guo
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Patent number: 9846499Abstract: Aspects of the disclosure provide a touch panel having an electrode array. The electrode array includes first electrodes arranged on a first layer, each first electrode patterned to include a plurality of sequentially connected first electrode elements that are generally shaped as elongated polygons, and second electrodes arranged on a second layer, each second electrode patterned to include a plurality of sequentially connected second electrode elements that are generally shaped as elongated polygons, wherein the first electrodes on the first layer and the second electrodes on the second layer are arranged over one another so as to form an interlocking pattern.Type: GrantFiled: May 28, 2015Date of Patent: December 19, 2017Assignee: Marvell World Trade Ltd.Inventors: Yexin Chen, Wei Hou, Haiqing Zhang, Tao Shui, Yonghua Song
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Patent number: 9841855Abstract: System and methods are provided for touch detection. The system includes: a sensing capacitive network configured to generate a touch-sensing signal based at least in part on a touch panel capacitance; an internal capacitive network configured to generate an input signal based at least in part on a predetermined internal capacitance; a comparative network configured to compare the touch-sensing signal with a reference signal to generate a first comparison result and compare the input signal with the reference signal to generate a second comparison result; and a signal processing component configured to generate a detection result to indicate whether a touch event occurs on the touch panel based at least in part on the first comparison result and the second comparison result.Type: GrantFiled: April 24, 2015Date of Patent: December 12, 2017Assignee: MARVELL WORLD TRADE LTD.Inventors: Hao Zhou, Dechao Meng, Yiran Li, Tao Shui, Yonghua Song
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Patent number: 9490810Abstract: AFE circuitry handles both voltage and current input signals. In one embodiment, both a voltage path and a current path are provided from the input. Switching circuitry selects one of the paths. A switch also turns on or off a current-to-voltage conversion circuit used to convert a current input into a voltage. In one embodiment, noise is significantly reduced by using a dedicated ground pin or terminal for the negative reference of a differential circuit. This applies the same external board noise, which is on the input signal, to the negative reference, so the noise is canceled in the differential signal. In one embodiment, temperature compensation is provided via an IPTAT circuit which is used to shift the voltage up in order to balance the decrease in DC voltage with increasing temperature.Type: GrantFiled: January 17, 2014Date of Patent: November 8, 2016Assignee: Marvell International Ltd.Inventors: Fu-Tai An, Yingxuan Li, Yonghua Song
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Patent number: 9220136Abstract: Aspects of the disclosure provide a method. The method includes detecting a dimming characteristic in an energy source that provides energy to be transferred to a load via a magnetic component, receiving a dimming control signal, and controlling a switch in connection with the magnetic component based on the dimming characteristic and the dimming control signal to transfer energy to the load via the magnetic component.Type: GrantFiled: May 21, 2013Date of Patent: December 22, 2015Assignee: Marvell World Trade Ltd.Inventors: Wanfeng Zhang, Pantas Sutardja, Yonghua Song
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Publication number: 20150346889Abstract: Aspects of the disclosure provide a touch panel having an electrode array. The electrode array includes first electrodes arranged on a first layer, each first electrode patterned to include a plurality of sequentially connected first electrode elements that are generally shaped as elongated polygons, and second electrodes arranged on a second layer, each second electrode patterned to include a plurality of sequentially connected second electrode elements that are generally shaped as elongated polygons, wherein the first electrodes on the first layer and the second electrodes on the second layer are arranged over one another so as to form an interlocking pattern.Type: ApplicationFiled: May 28, 2015Publication date: December 3, 2015Applicant: Marvell World Trade Ltd.Inventors: Yexin CHEN, Wei Hou, Haiqing Zhang, Tao Shui, Yonghua Song
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Patent number: 9190973Abstract: Aspects of the disclosure process an amplifier circuit. The amplifier circuit includes an input stage, an intermediate stage, an output stage and a detecting and controlling circuit. The input stage is configured to receive an electrical signal for amplification. The intermediate stage is configured to amplify with an adjustable gain. The output stage is configured to drive an audio output device in response to the amplified electrical signal. The detecting and controlling circuit is configured to detect a current for driving the audio output device, and adjust the gain of the intermediate stage based on the current to compensate for a pole change of the amplifier circuit due to a change of the current.Type: GrantFiled: April 5, 2013Date of Patent: November 17, 2015Assignee: Marvell International Ltd.Inventors: Hao Zhou, Tao Shui, Yonghua Song, Yongxu Wang, Haiqing Zhang
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Patent number: 9190859Abstract: In one embodiment, an apparatus includes a first supply voltage and a second supply voltage. Level shifter circuitry is configured as a first voltage battery to shift a first voltage and a second voltage battery to shift a second voltage. A first circuit receives the shifted first voltage and sets a third voltage, and receives the shifted second voltage and sets a fourth voltage. The shifted first voltage is greater than the first supply voltage and the shifted second voltage level is less than the second supply voltage. A second circuit sets a fifth voltage and a sixth voltage. The fifth voltage follows the third voltage and the sixth voltage following the fourth voltage.Type: GrantFiled: May 25, 2011Date of Patent: November 17, 2015Assignee: MARVELL INTERNATIONAL LTD.Inventors: Hao Zhou, Yonghua Song, Tao Shui, Jie Jiang
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Patent number: 9184839Abstract: The present disclosure describes techniques for identity-based RF circuitry compensation. In some aspects data from a wireless device is received via radio frequency circuitry, the data including an identifier that uniquely identifies the wireless device. Impairments of the radio frequency circuitry are estimated based on the received data and then the estimated impairments are associated with the identifier of the wireless device. In response to subsequently receiving data that includes the identifier, the radio frequency circuitry is compensated using the estimated impairments.Type: GrantFiled: August 3, 2012Date of Patent: November 10, 2015Assignee: Marvell International Ltd.Inventors: Songping Wu, Daxiao Yu, Yonghua Song
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Publication number: 20150309621Abstract: System and methods are provided for touch detection. The system includes: a sensing capacitive network configured to generate a touch-sensing signal based at least in part on a touch panel capacitance; an internal capacitive network configured to generate an input signal based at least in part on a predetermined internal capacitance; a comparative network configured to compare the touch-sensing signal with a reference signal to generate a first comparison result and compare the input signal with the reference signal to generate a second comparison result; and a signal processing component configured to generate a detection result to indicate ether a touch event occurs on the touch panel based at least in part on the first comparison result and the second comparison result.Type: ApplicationFiled: April 24, 2015Publication date: October 29, 2015Inventors: Hao Zhou, Dechao Meng, Yiran Li, Tao Shui, Yonghua Song
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Patent number: 9148188Abstract: Systems and methods for using non-crystal-based reference oscillators in the transmission and reception of frequency-modulated signals are disclosed. To protect against intrusion on neighboring designated frequency bands, guard bands, having a collective width greater than the total expected error based on the contribution of the frequency error from the non-crystal-based oscillators in the transmitter and/or receiver, can be designated. To protect against inter-channel interference within a designated frequency band, transmitters and receivers can include static sub-bandwidths wider than any possible total frequency error, such that it would be impossible for a transmitter or receiver to attempt to communicate on an unintended sub-band.Type: GrantFiled: October 28, 2013Date of Patent: September 29, 2015Assignee: Marvell International Ltd.Inventors: Songping Wu, Gang Liu, Daxiao Yu, Yonghua Song
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Patent number: 8989684Abstract: A voltage regulator for a plurality of radio frequency subcircuits of a radio frequency circuit. A first transistor configured to receive, based on a comparison between a reference voltage signal and a feedback signal, a bias signal corresponding to a desired regulated voltage for the plurality of radio frequency subcircuits, output the bias signal, and generate the feedback signal according to the bias signal as output from the first transistor. A second transistor configured to receive the bias signal as output from the first transistor and provide, based on the bias signal, the desired regulated voltage to a respective first one of the plurality of radio frequency subcircuits. A third transistor is configured to receive the bias signal as output from the first transistor and provide, based on the bias signal, the desired regulated voltage to a respective second one of the plurality of radio frequency subcircuits.Type: GrantFiled: January 24, 2014Date of Patent: March 24, 2015Assignee: Marvell International Ltd.Inventors: Swee-Ann Teo, Lawrence Tse, Yonghua Song
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Patent number: 8907833Abstract: In accordance with the teachings described herein, systems and methods are provided for a time-interleaved pipeline analog to digital converter. An example pipeline analog to digital converter may include passive sampling circuits and a multiplying digital to analog converter circuit. A first passive sampling circuit includes an input terminal coupled to an analog input signal, and outputs a first sample voltage that is responsive to the analog input signal. A second passive sampling circuit includes an input terminal coupled to the analog input signal, and outputs a second sample voltage that is responsive to the analog input signal. The first and second passive sampling circuits are clocked such that the first sample voltage and the second sample voltage are time-interleaved.Type: GrantFiled: April 9, 2013Date of Patent: December 9, 2014Assignee: Marvell International Ltd.Inventors: Hao Zhou, Yonghua Song, Tao Shui, Jie Jiang, Song Chen
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Patent number: 8823441Abstract: A method includes, in at least one aspect, selecting a first phase signal, where the first phase signal concurrently enables a first pair of switching elements; selecting a second phase signal, where the second phase signal concurrently enables a second pair of switching elements; and generating an interpolated phase signal by providing a connection between a switching element of the first pair of switching elements to an output node and providing a connection between a switching element of the second pair of switching elements to the output node.Type: GrantFiled: September 16, 2013Date of Patent: September 2, 2014Assignee: Marvell International Ltd.Inventors: Yonghua Song, Hui Wang, Zubir Adal
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Patent number: 8781539Abstract: A method includes, in at least one aspect, connecting an input of a bias circuit and an output of the bias circuit to another circuit while the other circuit is in a first power mode, such that the bias circuit has an operating state corresponding to the first power mode; switching the input of the bias circuit and the output of the bias circuit from the other circuit to a dummy circuit when a power mode of the other circuit is changed from the first power mode to a second power mode; and maintaining the bias circuit at the operating state corresponding to the first power mode using the dummy circuit while the other circuit is in the second power mode.Type: GrantFiled: January 18, 2013Date of Patent: July 15, 2014Assignee: Marvell International Ltd.Inventors: Xiaodong Jin, King Chun Tsai, Yonghua Song
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Patent number: 8760220Abstract: A beta enhancement circuit includes a current source connected in series with a transistor between two voltage supply lines. In an embodiment, the voltage supply lines are configured for connection to a power source and ground potential. A resistor device is connected between a control terminal of the transistor device and one of voltage supply lines. A value for the resistor device is selected based on one or more process dependent parameters of the transistor.Type: GrantFiled: June 5, 2013Date of Patent: June 24, 2014Assignee: Marvell International Ltd.Inventors: Hao Zhou, Bingkun Yao, Tao Shui, Yonghua Song
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Patent number: 8698537Abstract: In at least one aspect, an apparatus includes a plurality of inverter groups and a plurality of bias current sources. The plurality of inverter groups is configured to amplify a signal. Each of the inverter groups has one or more inverters and is in communication with at least one other inverter group of the plurality of inverter groups. Each of the bias current sources is configured to provide a bias current to a different inverter group of the plurality of inverter groups to perform signal amplification.Type: GrantFiled: October 12, 2012Date of Patent: April 15, 2014Assignee: Marvell International Ltd.Inventors: Yonghua Song, Pantas Sutardja
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Patent number: 8639201Abstract: A radio frequency transceiver for a wireless communications device transceiver comprising a plurality of subcircuits, a first regulator circuit, and a plurality of second regulator circuits. Each subcircuit is configured to perform an operation of the radio frequency transceiver in accordance with a corresponding regulated voltage. A first regulator circuit is configured to provide a bias signal based on a reference signal and a feedback signal indicative of the bias signal. The bias signal corresponds to a desired regulated voltage for the plurality of subcircuits. A plurality of second regulator circuits corresponding to respective ones of the plurality of subcircuits are each configured to provide the regulated voltage to the respective one of the plurality of subcircuits.Type: GrantFiled: December 10, 2012Date of Patent: January 28, 2014Assignee: Marvell International Ltd.Inventors: Swee-Ann Teo, Lawrence Tse, Yonghua Song