Patents by Inventor Kai Chou

Kai Chou 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).

  • Publication number: 20160264006
    Abstract: A hybrid electrical power system for an electric vehicle, particularly an industrial electric vehicle such as an electric forklift, comprises a fuel cell stack, a DC/DC converter and a Li-ion battery. The DC/DC converter comprises a transformer for converting a voltage of direct current generated by the fuel cell stack to another voltage, and a controller for generating a reference voltage for the another voltage to approach. When the reference voltage is set to be larger than the another voltage, the fuel cell stack provides power to drive the vehicle and charge the Li-ion battery. When the reference voltage is set to be not larger than the voltage of direct current from the Li-ion battery, both the Li-ion battery and the fuel cell stack provide power to drive the vehicle.
    Type: Application
    Filed: March 9, 2015
    Publication date: September 15, 2016
    Inventors: TING-KAI CHOU, CHE-PING CHOU, CHEN-SHENG LIN, CHIH-PIN HSU
  • Publication number: 20160258957
    Abstract: This present invention relates to a screening method for rapidly identifying the hybridomas upon cell size and the expression of an exogenous label such as fluorescence labeling. This method of this present invention can largely shortens the time cost for antibody development by saving the time period with comparison of traditional methods using cell culture with media such as HAT medium.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 8, 2016
    Inventors: Chang-Chi HSIEH, Ming-Shiou JAN, Ai SHIH, Chuan-Kai CHOU, Yen-Wan HSIAO, Ying-Chun LAI
  • Publication number: 20160211676
    Abstract: An intelligent charging device has a control unit and multiple power strips respectively connected to and simultaneously charging multiple sets of digital devices. Each power strip has a relay connected to the control unit. When acquiring load signals of the power strips and a maximum load threshold, the control unit performs a charging schedule configuration to generate a charging demand sequence, and then calculates a charging time for each charging schedule of a charging cycle according to the charging demand sequence and the load signals of the multiple power strips for charging time allocation and instructs each power strip to charge for a corresponding charging time in a corresponding charging schedule, thereby allowing the power strip with the maximum charging demand to charge first and achieving the goal of efficiency charging.
    Type: Application
    Filed: November 16, 2015
    Publication date: July 21, 2016
    Inventors: Jui-Hsuan CHIANG, Lien-Kai CHOU, Chao-Hung CHANG, Chi-Fa HSU
  • Publication number: 20160150406
    Abstract: User-authentication-based approval of a first device via communication with a second device over a channel (e.g., an insecure channel) is described. The first device receives a session ID and first user-observable information, or an identifier thereof, from an identity provider, presents the first user-observable information to a user, and sends the session ID to the second device. The second device sends the session ID to the identity provider to obtain therefrom second user-observable information, or an identifier thereof, and a security challenge. The second user-observable information bears a user-discernable relationship to the first user-observable information and is presented to the user by the second device. The second device is capable of generating a response to the security challenge for transmission to the identity provider based at least on input received from the user, the response to the security challenge being indicative of the suitability of the first device for approval.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 26, 2016
    Inventors: Benjamin R. Vincent, Tarek B. Kamel, Sparky Toews, Dejan Subotic, Peter E. Zenzerovich, James Shang Kai Chou
  • Publication number: 20150349580
    Abstract: A charging device for commonly charging multiple digital electronic devices has a housing, a charge control unit and multiple outlet strips. The charge control unit is mounted inside the housing and has multiple relays. The outlet strips are electrically connected to the charge control unit with each outlet strip electrically connected to one of the relays. A charging method corresponding to the charging device is performed by the charge control unit without the need of users' configuration during a charge cycle. The charge method automatically determines if the outlet strips can simultaneously supply power to charge during each charge schedule of the charge cycle. At least one outlet strip supplies power to charge during each charge schedule and each outlet strip can supplies power to charge once, thereby achieving optimization for charging process with automatic determination and enhancing charging efficiency and users' operational convenience.
    Type: Application
    Filed: December 16, 2014
    Publication date: December 3, 2015
    Inventors: Lien-Kai Chou, Chao-Hung Chang, Chi-Fa Hsu
  • Patent number: 8937826
    Abstract: A power converter apparatus for driving an electronic load is disclosed. The power converter apparatus includes a rectifier module, an active switch unit, a driving module, an input voltage detection module, an output voltage detection module, a current detection module and a digital processor module. The active switch unit is shunt connected to the electronic load. The input voltage detection module is used for sampling out an input sampled voltage waveform. The output voltage detection module is used for sampling out an output sampled voltage waveform. The current detection module is used for sampling out a practical input current waveform. The digital processor module generates a current reference command according to the input sampled voltage waveform and the output sampled voltage waveform. The digital processor module dynamically switches the active switch unit according to the current reference command and the practical input current waveform.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: January 20, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Te-Wei Yuan, Yi-Kai Chou, Chien-Yu Tseng, Yu-Jen Chen
  • Patent number: 8922409
    Abstract: A switch-driving circuit and a Digital-to-Analog Converter (DAC) using the switch-driving circuit are provided. The switch-driving circuit includes a main cell and a reference cell. The main cell includes a current source and a resistance-control component electronically connected to the current source. The reference cell is coupled to the current source and the resistance-control component, and includes a first loop, the first loop is configured to track a target reference voltage so as to provide at least one first control voltage to control a resistance change of the resistance-control component. The reference cell and the main cell are implemented by MOS transistors in place of capacitors which occupy an increased circuit area, rendering reduced circuit area for the switch-driving circuit, and decreasing manufacturing costs. Further, the switch-driving circuit outputs a voltage signal with reduced noise, increasing the performance of the Digital-to-Analog Converter.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 30, 2014
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Cheng Tao, Yue Feng, Kun Lan, Yu-Kai Chou
  • Patent number: 8836556
    Abstract: An Analog to Digital Converter (ADC), an analog-to-digital conversion method, and an integrated circuit including the ADC. The ADC includes an input adjustment buffer stage, a sub-ADC, and a sample switch. The sample switch is coupled between the output node of the input adjustment buffer stage and the input node of the sub-ADC. When the sample switch is opened, the input adjustment buffer stage is configured to switch between a first work state and a second work state according to a predetermined rule, and to adjust an input voltage signal of the input adjustment buffer stage based on transitions between the first and second work states. When the sample switch is closed, the input adjustment buffer stage is configured to provide an adjusted voltage signal to the input node of the sub-ADC, and the sub-ADC is configured to perform an analog-to-digital conversion onto the adjusted voltage signal.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: September 16, 2014
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Yingyi Liu, Yu-Kai Chou, Kun Lan
  • Publication number: 20140238837
    Abstract: A continuous type wastewater purifying device includes a wastewater tank defining a predetermined level of wastewater received in the wastewater tank. A purifying piping unit is mounted on a base and includes a wastewater pipe, a purified water pipe, and at least one heat conduction pipe having an inlet end and an outlet end respectively connected to and in communication with the wastewater pipe and the purified water pipe. The wastewater pipe has a first height from a mounting portion of the base in a height direction. The purified water pipe has a second height from the mounting portion in the height direction. The second height is greater than the first height. The inlet end and the outlet end of the at least one heat conduction pipe has a height difference therebetween. The outlet end of the at least one heat conduction pipe is higher than the predetermined level.
    Type: Application
    Filed: August 28, 2013
    Publication date: August 28, 2014
    Applicant: NATIONAL CHENG KUNG UNIVERSITY
    Inventors: Jeng-Shiung Jan, Han-Ting Yen, Shuang-Yuan Chang, Meng-Hao Chuang, Shih-Kai Chou
  • Patent number: 8810218
    Abstract: A voltage regulator includes a pass transistor, an operational amplifier and a voltage divider circuit. The pass transistor receives a supply voltage to generate a regulated output voltage according to a control signal. The operational amplifier generates the control signal according to a feedback voltage. The voltage divider circuit generates the feedback voltage at a feedback node according to the regulated output voltage, and includes a string of resistors and a stabilization element. The string of resistors is coupled to the pass transistor and includes multiple resistors. The stabilization element is coupled to the resistors and receives the regulated output voltage.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 19, 2014
    Assignee: Mediatek Singapore Pte. Ltd.
    Inventors: Yingyi Liu, Kun Lan, Chih-Chien Huang, Yu-Kai Chou
  • Publication number: 20140198454
    Abstract: An integrated power module packaging structure includes a plastic housing having a cavity; a plurality of step-shaped pins embedded in the plastic housing, a first printed circuit board disposed in the cavity, and a second printed circuit board disposed above the first printed circuit board in the cavity. Each of the step-shaped pins includes a first L-shaped bending portion and a second L-shaped bending portion connected to each other. The first printed circuit board is disposed with at least a power device and is electrically connected to at least a part of the first L-shaped bending portions. Two opposite surfaces of the second printed circuit board are respectively disposed with at least an electronic device, and the second printed circuit board is electrically connected to at least a part of the second L-shaped bending portions.
    Type: Application
    Filed: April 1, 2013
    Publication date: July 17, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Te-Wei YUAN, Hsueh-Kuo LIAO, Yi-Kai CHOU, Ming-Yuan TSAI, Wei-Hao CHI
  • Patent number: 8730080
    Abstract: An analog-to-digital converter is provided. The analog-to-digital converter includes a sampling-voltage providing circuit, a first comparison circuit, a second comparison circuit, and an encoder circuit. The sampling-voltage providing circuit provides a group of first comparison voltages and a group of second comparison voltages. The first comparison circuit performs a first comparison operation to an analog-signal input quantity according to the group of first comparison voltages to generate a first comparison digital quantity. The second comparison circuit selects second comparison voltages among the group of second comparison voltages according to the first comparison digital quantity and performs a second comparison operation to the analog-signal input quantity according to the selected second comparison voltages to generate a second comparison digital quantity.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: May 20, 2014
    Assignee: Mediatek Singapore Pte. Ltd.
    Inventors: Cong Liu, Yu-Kai Chou
  • Patent number: 8723714
    Abstract: A multiplying digital-to-analog converter (MDAC) is provided. The MDAC includes a sub DAC decoding circuit, a capacitor-switch circuit, and an operation amplifier circuit. The capacitor-switch circuit includes at least two sampling capacitor sets which are coupled in parallel. The number of sampling capacitors in one of the sampling capacitor sets is larger than or equal to two. Each sampling capacitor set is coupled to an analog-signal input quantity through a sampling switch and to a corresponding output terminal of the sub DAC decoding circuit through a decoding switch. The sub DAC decoding circuit decodes a digital quantity and outputs a corresponding analog signal at each output terminal, such that the corresponding analog signals are applied to the respective sampling capacitor sets through the decoding switches and summed by the respective sampling capacitor sets to obtain an analog-signal quantity corresponding to the digital quantity.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 13, 2014
    Assignee: Mediatek Singapore Pte. Ltd.
    Inventors: Cong Liu, Yu-Kai Chou
  • Patent number: 8711025
    Abstract: A method for configuring a plurality of analog-to-digital converter (ADC) keys includes: utilizing a processor for determining a plurality of divided-voltages respectively corresponding to the Keys according to a plurality of voltage variation ranges respectively corresponding to the Keys; and calculating a plurality of resistive values of a voltage dividing model according to at least the divided-voltages, wherein the voltage dividing model has a plurality of voltage dividing configurations respectively corresponding to the keys.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: April 29, 2014
    Assignee: MediaTek Singapore Pte. Ltd.
    Inventors: Kun Lan, Yingyi Liu, Yu-Kai Chou
  • Publication number: 20140078056
    Abstract: A pointer speed adjusting method is used in a display system including a pen-shaped pointing device and a display screen. The pointer speed adjusting method includes the following steps. Firstly, a moving trajectory of the pen-shaped pointing device is sensed. Then, a trajectory display pattern is obtained according to the moving trajectory. Then, the trajectory display pattern is compared with a reference display pattern shown on the display screen, so that an optical scale factor error is obtained. Afterwards, a speed conversion ratio is adjusted according to the optical scale factor error.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 20, 2014
    Applicant: AVer Information Inc.
    Inventors: Cheng-Cheng Yu, Chun-Chi Huang, Lien-Kai Chou
  • Patent number: 8667162
    Abstract: An apparatus for providing a mobile streaming adaptor includes a processor configured to receive media content from a remote camera, process the received media content by capturing, encoding and encapsulating the media content at a mobile electronic device, connect to a remote streaming server through function of a mobile networked device; and stream the encapsulated media content to the mobile networked device for communication of the encapsulated content to the remote streaming server through an Internet Protocol (IP) network for real-time distribution to a communication device. A corresponding computer program product and method are also provided.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: March 4, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Jen-Yu Yu, Hsin-Hua Lee, Chong-Yie Chang, Yeh-Kai Chou
  • Publication number: 20130314262
    Abstract: A switch-driving circuit and a Digital-to-Analog Converter (DAC) using the switch-driving circuit are provided. The switch-driving circuit includes a main cell and a reference cell. The main cell includes a current source and a resistance-control component electronically connected to the current source. The reference cell is coupled to the current source and the resistance-control component, and includes a first loop, the first loop is configured to track a target reference voltage so as to provide at least one first control voltage to control a resistance change of the resistance-control component. The reference cell and the main cell are implemented by MOS transistors in place of capacitors which occupy an increased circuit area, rendering reduced circuit area for the switch-driving circuit, and decreasing manufacturing costs. Further, the switch-driving circuit outputs a voltage signal with reduced noise, increasing the performance of the Digital-to-Analog Converter.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 28, 2013
    Applicant: MEDIATEK SINGAPORE PTE. LTD.
    Inventors: Cheng TAO, Yue FENG, Kun LAN, Yu-Kai CHOU
  • Patent number: 8586316
    Abstract: A single molecule or molecule complex detection method is disclosed in certain aspects, comprising nano- or micro-fluidic channels.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: November 19, 2013
    Assignees: The Board of Regents of the University of Texas System, The Texas A&M University System
    Inventors: Jun Kameoka, Nan Jing, Mien-chie Hung, Chao-Kai Chou
  • Publication number: 20130300381
    Abstract: A power converter apparatus for driving an electronic load is disclosed. The power converter apparatus includes a rectifier module, an active switch unit, a driving module, an input voltage detection module, an output voltage detection module, a current detection module and a digital processor module. The active switch unit is shunt connected to the electronic load. The input voltage detection module is used for sampling out an input sampled voltage waveform. The output voltage detection module is used for sampling out an output sampled voltage waveform. The current detection module is used for sampling o out a practical input current waveform. The digital processor module generates a current reference command according to the input sampled voltage waveform and the output sampled voltage waveform. The digital processor module dynamically switches the active switch unit according to the current reference command and the practical input current waveform.
    Type: Application
    Filed: October 31, 2012
    Publication date: November 14, 2013
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Te-Wei YUAN, Yi-Kai CHOU, Chien-Yu TSENG, Yu-Jen CHEN
  • Publication number: 20130293403
    Abstract: An Analog to Digital Converter (ADC), an analog-to-digital conversion method, and an integrated circuit including the ADC. The ADC includes an input adjustment buffer stage, a sub-ADC, and a sample switch. The sample switch is coupled between the output node of the input adjustment buffer stage and the input node of the sub-ADC. When the sample switch is opened, the input adjustment buffer stage is configured to switch between a first work state and a second work state according to a predetermined rule, and to adjust an input voltage signal of the input adjustment buffer stage based on transitions between the first and second work states. When the sample switch is closed, the input adjustment buffer stage is configured to provide an adjusted voltage signal to the input node of the sub-ADC, and the sub-ADC is configured to perform an analog-to-digital conversion onto the adjusted voltage signal.
    Type: Application
    Filed: March 13, 2013
    Publication date: November 7, 2013
    Applicant: MediaTek Singapore Pte. Ltd.
    Inventors: Yingyi LIU, Yu-Kai CHOU, Kun LAN