Patents by Inventor Yu Kuang
Yu Kuang 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: 9116188Abstract: A capacitance evaluation circuit includes a capacitive voltage divider, an analog-to-digital converter (ADC) and a processing module. The capacitive voltage divider includes a switch circuit, a known capacitor and a capacitor under test. The switch circuit is controlled by first and second clock signals. A voltage variation at a first terminal of the known capacitor is coupled to a first terminal of the capacitor under test based on a conduction state of the switch circuit. The ADC converts a voltage on the first terminal of the capacitor under test into a digital signal. The processing module detects a capacitance and a capacitance variation of the capacitor under test according to the digital signal from the ADC and a parameter of the ADC.Type: GrantFiled: November 28, 2011Date of Patent: August 25, 2015Assignee: Raydium Semiconductor CorporationInventor: Yu Kuang
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Publication number: 20150209207Abstract: A wheelchair system includes a wheelchair including at least one adjustable seating function, a sensor system in operative connection with the wheelchair which includes at least one sensor to measure or sense a position of the at least one adjustable seating function, a processor system in operative connection with the sensor system, a memory system in operative connection with the processor system, and a communication system in operative connection with the processor system. The communication system is, for example, adapted to wirelessly communicate with one or more remote systems (that is, a system remote from the wheelchair; for example a remote system or server, which may include a database). The wheelchair system further includes a user interface system in operative connection with the processor system and at least one application stored on the memory system and executable by the processor system.Type: ApplicationFiled: January 30, 2015Publication date: July 30, 2015Inventors: RORY ALAN COOPER, YU-KUANG WU, BRANDON JOSEPH DAVELER, HSIN-YI LIU, HONGWU WANG, JONATHAN L. PEARLMAN, GARRETT G. GRINDLE
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Patent number: 9091714Abstract: A capacitance measurement circuit includes an operation amplifier; a reference capacitor having a first terminal coupled to a first input terminal of the operation amplifier and a second terminal selectively coupled to a first or second reference voltage; a sensor capacitor having a first terminal coupled to a second input terminal of the operation amplifier and a second terminal selectively coupled to the first or second reference voltage; an approximation unit having an output terminal and an input terminal coupled to an output terminal of the operation amplifier; a conversion unit having an output terminal and an input terminal coupled to the output terminal of the approximation unit; and a coupling capacitor having a first terminal coupled to the first or second input terminal of the operation amplifier and a second terminal coupled to the output terminal of the conversion unit.Type: GrantFiled: November 20, 2012Date of Patent: July 28, 2015Assignee: Raydium Semiconductor CorporationInventors: Shih-Tzung Chou, Yong-Nien Rao, Yu Kuang
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Patent number: 9063606Abstract: The present invention discloses a control device for a touch panel that comprises a plurality of X-directional sensing lines and Y-directional sensing lines. The X-directional sensing lines and Y-directional sensing lines are arranged in an interlaced manner. The control device comprises a clock generation circuit, a selection module, a driving signal generation circuit, a differential detection module, and a digital-to-analog conversion module. The selection module selects a first sensing line and a second sensing line from the X-directional sensing lines or Y-directional sensing lines. The driving signal generation circuit generates first and second driving signals to the first and second sensing lines, respectively. The digital to analog conversion module selectively outputs a first voltage to the first sensing line or outputs a second voltage to the second sensing line. The operation frequency of the touch panel can be increased using the control device of the present invention.Type: GrantFiled: December 28, 2011Date of Patent: June 23, 2015Assignee: Raydium Semiconductor CorporationInventors: Yu Kuang, Yong Nien Rao, Shih Tzung Chou, Tsung Lin Wu
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Patent number: 9025900Abstract: A signal processing transformation (wavelet, Fourier, discrete cosine) is applied to a digital image on a mobile device in order to produce a low-level information image and at least one high-level information image. The low-level image is recognizable as the digital image and is kept on the device; all other related images are deleted. The high-level information images are uploaded. The transformation is applied recursively and is dictated by a default setting, calculated from data of the mobile device, or input. To regenerate the original image the device connects to the server and downloads a set of high-level information images or all sets. The low resolution image is combined with the high-level information images using the reverse of the transformation originally applied to produce a higher resolution version of the low resolution image. Successive sets of high-level information images may be recursively applied to generate successively higher resolution images.Type: GrantFiled: September 7, 2012Date of Patent: May 5, 2015Assignee: Trend Micro Inc.Inventors: Wen-Kwang Tsao, Kuan-Ru Fu, Yu-Kuang Lin
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Patent number: 9007324Abstract: An touch input electronic device includes: a touch input device; a clock generation circuit, generating a first clock and a second clock; a touch sensing circuit, coupled to the touch input device, the touch sensing circuit operated under the first clock; a logic circuit, receiving a sensing output signal from the touch sensing circuit, the logic circuit operated under the second clock; and a conversion circuit, outputting an output voltage under control of the logic circuit, the output voltage coupled to the touch sensing circuit, the conversion circuit operated under the second clock. In response to the sensing output signal from the touch sensing circuit, the logic circuit controls the conversion circuit to adjust the output voltage to detect a capacitance variance of the touch input device.Type: GrantFiled: October 2, 2013Date of Patent: April 14, 2015Assignee: Raydium Semiconductor CorporationInventors: Yu Kuang, Shih-Tzung Chou
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Patent number: 8994310Abstract: The present invention provides a motor controller having one or more multi-functional pins. The motor controller includes a plurality of pins but does not include a dedicated pin for transmitting a clock signal and a dedicated pin for transmitting a motor specification database setting signal, wherein the clock signal and the motor specification database setting signal are for setting motor specification data. The clock signal and the motor specification database setting signal are transmitted through two of the plural pins which are multi-functional function pins shared by other functions in a normal operation mode. In a motor specification database setting mode, these multi-functional function pins are used for transmitting the clock signal and the motor specification database setting signal. In the normal operation mode, these multi-functional function pins are used for other functions.Type: GrantFiled: March 19, 2013Date of Patent: March 31, 2015Assignee: Richtek Technology CorporationInventors: Yu-Kuang Wu, Wei-Hsu Chang
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Publication number: 20140203749Abstract: The present invention provides a motor controller having one or more multi-functional pins. The motor controller includes a plurality of pins but does not include a dedicated pin for transmitting a clock signal and a dedicated pin for transmitting a motor specification database setting signal, wherein the clock signal and the motor specification database setting signal are for setting motor specification data. The clock signal and the motor specification database setting signal are transmitted through two of the plural pins which are multi-functional function pins shared by other functions in a normal operation mode. In a motor specification database setting mode, these multi-functional function pins are used for transmitting the clock signal and the motor specification database setting signal. In the normal operation mode, these multi-functional function pins are used for other functions.Type: ApplicationFiled: March 19, 2013Publication date: July 24, 2014Applicant: RICHTEK TECHNOLOGY CORPORATIONInventors: Yu-Kuang Wu, Wei-Hsu Chang
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Publication number: 20140191936Abstract: A driving module for a liquid crystal display device is disclosed. The driving module includes a data line signal processing unit, for generating a plurality of data driving signals, a scan line signal processing unit, for generating a plurality of gate driving signals, and a control unit, for generating a display clock, to control the data line signal processing unit and the scan line signal processing unit to address a plurality of pixels of the liquid crystal display device according to the display clock. The display clock is a normal operating clock under a normal operating mode and is a blanking backlight clock under a blanking backlight mode, wherein a frequency of the normal operating clock is less than a frequency of the blanking backlight clock.Type: ApplicationFiled: July 3, 2013Publication date: July 10, 2014Inventors: Hsi-Chi Ho, Jen-Hao Liao, Yu-Kuang Chang
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Patent number: 8743081Abstract: A touch panel includes a plurality of X-directional sensing lines and a plurality of Y-directional sensing lines. The X-directional sensing lines and the Y-directional sensing lines are arranged in a staggered manner. The control device includes a clock generation circuit, a selection module, a drive signal generation circuit, a digital to analog conversion module, first and second capacitors and a differential detection circuit. The X-directional sensing lines and Y-directional sensing lines on the touch panel operate according to a predetermined scanning sequence. According to the control device and the predetermined scanning sequence of the present invention, the sensing speed of the touch panel can be improved.Type: GrantFiled: August 10, 2011Date of Patent: June 3, 2014Assignee: Raydium Semiconductor CorporationInventor: Yu Kuang
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Patent number: 8736572Abstract: The invention discloses a touch input device and a touch sensor circuit. The touch input device includes a touch panel, a selection module and a differential detection module. The touch panel includes a plurality of capacitive nodes thereon. The selection module is electrically connected with the capacitive nodes of the touch panel. The selection module selects a first capacitive node and a second capacitive node from the capacitive nodes. The second capacitive node is close to the first capacitive node. The differential detection module, electrically connected to the selection module, is used for detecting a capacitance difference between the first capacitive node and the second capacitive node. According to the capacitance difference, the differential detection module generates a touch detection signal.Type: GrantFiled: June 17, 2010Date of Patent: May 27, 2014Assignee: Raydium Semiconductor CorporationInventors: Shih-Tzung Chou, Yu Kuang, Zong-Lin Wu, Yong-Nien Rao
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Patent number: 8686970Abstract: An touch input electronic device includes: a touch input device; a clock generation circuit, generating a first clock and a second clock; a touch sensing circuit, coupled to the touch input device, the touch sensing circuit operated under the first clock; a logic circuit, receiving a sensing output signal from the touch sensing circuit, the logic circuit operated under the second clock; and a conversion circuit, outputting an output voltage under control of the logic circuit, the output voltage coupled to the touch sensing circuit, the conversion circuit operated under the second clock. In response to the sensing output signal from the touch sensing circuit, the logic circuit controls the conversion circuit to adjust the output voltage to detect a capacitance variance of the touch input device.Type: GrantFiled: February 24, 2011Date of Patent: April 1, 2014Assignee: Raydium Semiconductor CorporationInventors: Yu Kuang, Shih-Tzung Chou
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Patent number: 8640968Abstract: This specification discloses a device of controlling temperature gain and the method thereof. The invention detects the temperature of work environment and uses it to generate a control signal and a PWM signal for dynamically controlling the heaters around electronic elements to heat up. When the temperature of work environment is too low, the invention can increase the stability of the electronic elements.Type: GrantFiled: May 3, 2010Date of Patent: February 4, 2014Assignee: Moxa Inc.Inventors: Tzu Cheng Lin, Yu Kuang Lee, Wei Cheng Chou, Hsin Ju Wu
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Publication number: 20140028622Abstract: An touch input electronic device includes: a touch input device; a clock generation circuit, generating a first clock and a second clock; a touch sensing circuit, coupled to the touch input device, the touch sensing circuit operated under the first clock; a logic circuit, receiving a sensing output signal from the touch sensing circuit, the logic circuit operated under the second clock; and a conversion circuit, outputting an output voltage under control of the logic circuit, the output voltage coupled to the touch sensing circuit, the conversion circuit operated under the second clock. In response to the sensing output signal from the touch sensing circuit, the logic circuit controls the conversion circuit to adjust the output voltage to detect a capacitance variance of the touch input device.Type: ApplicationFiled: October 2, 2013Publication date: January 30, 2014Applicant: Raydium Semiconductor CorporationInventors: Yu Kuang, Shih-Tzung Chou
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Publication number: 20140022383Abstract: A surveillance system, an image compression serializer and an image decompression deserializer are disclosed. The Surveillance System includes a video camera, a coaxial cable and a central control machine. The video camera provides a real time record and has an image compression serializer which compresses a digital image, captured by the video camera, down to a specific resolution and converts the digital image of the specific resolution into a serial format. The coaxial cable couples the image compression serializer to an image decompression deserializer of the central control machine. The digital image in the specific resolution and serial format is conveyed to the image decompression deserializer to be converted into a parallel format and decompressed to be video encoded.Type: ApplicationFiled: May 22, 2013Publication date: January 23, 2014Applicant: TERAWINS, INC.Inventors: Wen-Yi HUANG, Hsi-Pang WEI, Yu-Kuang WANG
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Publication number: 20130293528Abstract: A display driving apparatus is disclosed. The display driving apparatus includes a display panel, a controller and a driving circuit. The controller receives a signal adjusting data and generates a driving controlling signal according to the signal adjusting data. The driving circuit separately provides a scanning driving signal and a data driving signal to a scanning line and a data line and adjusts at least one electrical property of the scanning driving signal and at least one electrical property of the data driving signal according to the driving controlling signal, wherein the signal adjusting data is generated according to an impedance value of the scanning line and the data line.Type: ApplicationFiled: May 7, 2013Publication date: November 7, 2013Applicant: Novatek Microelectronics Corp.Inventors: Chien-Yu Chen, Yu-Hsun Peng, Wei-Hsiu Chang, Yu-Kuang Chang
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Patent number: 8558521Abstract: A multi-phase buck converter has a digital compensator to select a set of compensation coefficients depending on the operating phase number of the multi-phase buck converter, or including different compensators for each operation phase number to improve the loop gain bandwidth, transient response and stability of the multi-phase buck converter. The multi-phase buck converter operates with more phase circuits for higher loading and operates with fewer phase circuits for lower loading. The compensation varies with the number of the operated phase circuits so to be adaptive to the operation condition with an optimized control-to-output voltage transfer function.Type: GrantFiled: October 6, 2010Date of Patent: October 15, 2013Assignee: Richtek Technology Corp.Inventors: Wei-Hsu Chang, Yu-Cheng Lin, Yu-Kuang Wu, Dan Chen
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Patent number: 8497943Abstract: A display driving circuit comprising a video signal transformation circuit, a reference voltage generating circuit, a DAC and an interpolation operational amplifier is provided. The video signal transformation circuit transforms an input video signal into a transformed video signal with a higher bit depth. The transformed video signal comprises an upper n bits data and a lower m bits data, wherein n+m equals a bit depth of the transformed video signal. The reference voltage generating circuit generates reference voltages. The DAC selects a first reference voltage and a second reference voltage to interpolation operational amplifier from the reference voltages according to an upper n bits data of the transformed video signal. The interpolation operational amplifier outputs a driving voltage to display device according to the first reference voltage, the second reference voltage and the lower m bits data of the transformed video signal.Type: GrantFiled: January 24, 2012Date of Patent: July 30, 2013Assignee: Novatek Microelectronics Corp.Inventors: Yu-Kuang Chang, Kuei-Chung Chang, Ming-Da Chiang
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Patent number: 8487571Abstract: A zero-crossing detection circuit and a commutation device using the zero-crossing detection circuit are provided. The zero-crossing detection circuit is adapted into a three-phase brushless DC (direct current) motor with first to third coils. One terminal of each of the first to third coils is electrically coupled together with each other. The detection circuit comprises a first selection circuit, a second selection circuit and a comparator. The first selection circuit and the second selection circuit are both electrically coupled to another terminals of the first to third coils, to obtain first to third terminal voltages, and output one of the first to third terminal voltages according to a selection signal. The comparator is configured for comparing an output of the first selection circuit and an output of the second selection circuit, to output a comparing result.Type: GrantFiled: September 14, 2011Date of Patent: July 16, 2013Assignee: Richtek Technology Corp.Inventors: Wei-Hsu Chang, Pei-Cheng Huang, Hao-Yu Chang, Yen-Shin Lai, Kuo-Chung Lee, Jo-Yu Wang, Yu-Kuang Wu, Chih-Chang Chen, Shiue-Shr Jiang, Jen-Hung Chi
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Patent number: 8466715Abstract: A comparator includes: a wide-swing operation transconductance amplifier (OTA), having first and second differential input pairs for receiving first and second differential input signals respectively, the wide-swing OTA generating first and second intermediate output voltages in comparing the first with the second differential input signals; a current switch group; a current mirror group, wherein when an input common mode voltage of the first and the second differential input signal tends to one of a first and a second reference voltage, one of the first and the second differential input pair is turned off, and the current switch group and the current mirror group compensate a current flowing through the other of the first and the second differential input pair; and a decision circuit coupled to the wide-swing OTA, for enlarging a voltage difference between the first and the second intermediate output voltage to output a voltage comparison output signal.Type: GrantFiled: January 20, 2012Date of Patent: June 18, 2013Assignee: Raydium Semiconductor CorporationInventors: Yu Kuang, Shih-Tzung Chou