Patents by Inventor Kai Wen

Kai Wen 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: 20180373608
    Abstract: A phase compensation method applied to a phase-locked loop (PLL) module of a communication device includes determining to output one of a maximum likelihood (ML) phase to an oscillator of the PLL module and a data-aided (DA) phase error to a filter of the PLL module according to an input signal. The ML phase is a phase generated from estimating known data in the input signal by using a ML method, and the DA phase error is a phase error generate from estimating the known data in the input signal by using a DA method.
    Type: Application
    Filed: October 18, 2017
    Publication date: December 27, 2018
    Inventors: Ting-Nan CHO, Kai-Wen CHENG, Tai-Lai TUNG
  • Patent number: 10164671
    Abstract: An echo cancellation circuit is provided to reduce or eliminate the effects of a pre-echo signal that is part of a received multi-path signal. The circuit includes: a delay module, receiving an input signal and delaying the input signal to generate a plurality of delayed signals; a multiplication module, multiplying the plurality of delayed signals by a plurality of coefficients to generate a plurality of multiplication results, respectively; a summing circuit, performing a summation on the plurality of multiplication results to generate a summation signal; a subtraction circuit, receiving a first delay signal and generating a subtracted signal according to the first delayed signal and the summation signal; and a coefficient calculating circuit, calculating the plurality of coefficients according to the subtracted signal. The echo cancellation circuit outputs an output signal as the subtracted signal, with the pre-echo signal diminished or eliminated.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: December 25, 2018
    Assignee: MSTAR SEMICONDUCTOR, INC.
    Inventors: Chia-Wei Chen, Kai-Wen Cheng, Ko-Yin Lai, Tai-Lai Tung
  • Publication number: 20180360215
    Abstract: A slide rail assembly includes a rail element, a first bracket, an extension frame, a second bracket, a blocking element, and an elastic element. The first bracket is mounted to the rail element and configured to be mounted to a first post. The extension frame is movable relative to the rail element. The second bracket is mounted to the extension frame and configured to be mounted to a second post. The blocking element is movably connected to the second bracket. The elastic element is configured to provide an elastic force to hold the blocking element at a first position relative to the second bracket. When the extension frame is driven by the rail element to move along a direction, the extension frame pushes the blocking element to rotate from the first position to a second position, such that the second bracket is detachable from the second post.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 20, 2018
    Inventors: Ken-Ching Chen, Shun-Ho Yang, Chien-Li Huang, Kai-Wen You, Chun-Chiang Wang
  • Publication number: 20180360214
    Abstract: A slide rail assembly includes a first rail, a second rail, a third rail, and at least one supporting structure. The second rail is movable with respect to the first rail. The third rail is mounted between the first rail and the second rail. The at least one supporting structure is disposed at a position relative to the first rail. When the second rail is at a predetermined position relative to the first rail, the third rail supports a portion of the second rail, and the at least one supporting structure supports the remaining portion of the second rail.
    Type: Application
    Filed: February 7, 2018
    Publication date: December 20, 2018
    Inventors: KEN-CHING CHEN, SHUN-HO YANG, KAI-WEN YOU, CHUN-CHIANG WANG
  • Patent number: 10139480
    Abstract: A transducer for an ultrasound imaging system includes an array of transducer elements and an analog-to-digital converter configured to convert analog signals produced by the transducer elements into corresponding digital samples that are encoded with a first number of bits. One or more memories are used to store digital samples associated with frames of ultrasound data. A processor or logic circuit in the transducer is configured to compress the digital ultrasound data by calculating differences between the samples and encoding the differences with a second number of bits that is less than the first number of bits. In addition, the logic circuit is configured to transmit a packet that includes the differences encoded with the second number of bits and an overflow portion that encodes the differences that are too large to be encoded with the second number of bits.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: November 27, 2018
    Assignee: FUJIFILM SonoSite, Inc.
    Inventor: Kai Wen Liu
  • Publication number: 20180334067
    Abstract: A manufacturing method for a car safety seat includes the following steps: providing a mold and disposing a main body of the car safety seat into the mold, and injecting a foam material into a cavity of the mold and foaming the foam material so as to form a flexible layer integrated with the main body. A pressure in the cavity is between 1.5 bar and 5.0 bar. The manufacturing method disposes the main body into the mold and directly forms a flexible layer on the main body, so that the flexible layer ensures safety and comfort of the car safety seat while saves the necessity to dispose a seat pad or a cushion and fixing structures on the main body, and thereby reduces the cost and the work-hour of assembly, and the overall weight of the car safety seat can be reduced by omitting the fixing structures.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 22, 2018
    Inventors: Fengxiang Yan, Kai-Wen Cheng
  • Publication number: 20180333843
    Abstract: The remote control system includes a server unit and a remote controlling device receiving input of a first action command. The remote controlling device transmits the first action command to a first controlled device so as to enable the first controlled device to perform a first action and to transmit a relevant notice to the server unit. The server unit transmits, when receiving the notice, to each of second controlled devices, a respective one of second action commands that is included in a second action command set corresponding to the first action command, and that enables the second controlled device to perform a second action corresponding to the respective one of the second action commands.
    Type: Application
    Filed: May 18, 2017
    Publication date: November 22, 2018
    Applicant: National Taiwan Normal University
    Inventors: Jon-Chao HONG, Yi-Hsuan HUNG, Chi-Ruei TSAI, Kai-Wen TAI, Kai-Hsin TAI
  • Publication number: 20180328483
    Abstract: An electronic continuously variable transmission (ECVT) system applicable to a motorcycle includes a first speed sensor, second speed sensor, continuously variable transmission (CVT) and control unit. The control unit receives a user control signal and accordingly controls a speed-changing state of the CVT. While the motorcycle is operating in a manual-operation mode, the control unit predicts, according to the user control signal, a first speed signal sent from the first speed sensor, and a second speed signal sent from the second speed sensor, whether the next gear indicated by the shift request signal will cause the motorcycle to move unsteadily. If so, the control unit ignores the shift request signal and refuses to perform gear shifting. If not, the control unit sends at least a shift control signal to the CVT so that the CVT performs gear shifting.
    Type: Application
    Filed: March 9, 2018
    Publication date: November 15, 2018
    Inventor: KAI-WEN CHENG
  • Publication number: 20180317652
    Abstract: A slide rail assembly includes a first rail, a second rail and a third rail. The second rail is movably mounted between the first rail and the third rail. The second rail and the third rail are movable relative to the first rail. The second rail and the third rail are detachable from the first rail.
    Type: Application
    Filed: November 23, 2017
    Publication date: November 8, 2018
    Inventors: Ken-Ching Chen, Shun-Ho Yang, Kai-Wen Yu, Chun-Chiang Wang
  • Publication number: 20180310713
    Abstract: A seat cushion includes a cushion body, a weight measuring unit coupled to the cushion body, a tilt adjusting unit, a storage unit storing pre-established mapping data, and a controlling unit. The weight measuring unit measures, when a user is sitting on the cushion body, weight of the user applied to the cushion body so as to generate a result of weight measurement. The controlling unit is connected to the weight measuring unit, the tilt adjusting unit and the storage unit, and controls, when the seat cushion is operated in an automatic mode, the tilt adjusting unit to adjust a seat angle of the cushion body with respect to a horizontal reference plane based on the result of weight measurement, a height value and the mapping data.
    Type: Application
    Filed: April 28, 2017
    Publication date: November 1, 2018
    Applicant: National Taiwan Normal University
    Inventors: Jon-Chao HONG, Mei-Yung CHEN, Kai-Wen TAI, Kai-Hsin TAI, Chi-Ruei TSAI
  • Patent number: 10116161
    Abstract: A line ripple compensation technique is provided for a switching power converter operating in both a pulse frequency mode of operation and a pulse width modulation mode of operation.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: October 30, 2018
    Assignee: DIALOG SEMICONDUCTOR INC.
    Inventors: Kai-Wen Chin, Fuqiang Shi, Pengju Kong, David Nguyen
  • Publication number: 20180310014
    Abstract: A decoding circuit applied to a multimedia apparatus is provided. The decoding circuit is for decoding encoded data to generate system information, and includes multiple processing circuits and a determination circuit. The multiple processing circuits individually process the encoded data to generate multiple processed signals, and respectively correspond to multiple bit combinations of a part of the system information. The determination circuit determines the system information according to the multiple processed signals.
    Type: Application
    Filed: December 14, 2017
    Publication date: October 25, 2018
    Inventors: KUAN-CHOU LEE, KAI-WEN CHENG, TAI-LAI TUNG
  • Publication number: 20180309846
    Abstract: A method for providing personal information is proposed. A server unit receives preference information of a user from a terminal device, and matches the preference information with another user's preference information in a database according to a matching condition. The server unit provides the another user's preference information to the terminal device when the matching condition is satisfied by the preference information of the user and the another user.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 25, 2018
    Applicant: National Taiwan Normal University
    Inventors: Jon-Chao HONG, Ming-Yueh HWANG, Kai-Hsin TAI, Kai-Wen TAI
  • Publication number: 20180295989
    Abstract: A slide rail assembly includes a first rail, a second rail, a third rail, a synchronization member and a fastening member. The third rail is movably mounted between the first and second rails. The synchronization member and the fastening member are movably mounted to the third rail. The synchronization member is configured to engage with the second rail, such that the second and third rails can be synchronously moved relative to the first rail along an opening direction. When the second and third rails are moved to a first predetermined position, the synchronization member is disengaged from the second rail. When the third rail is moved from the first predetermined position to a second predetermined position along the opening direction, the third rail is fastened to the first rail by the fastening member to prevent the third rail from being moved relative to the first rail along a retracted direction.
    Type: Application
    Filed: October 16, 2017
    Publication date: October 18, 2018
    Inventors: Ken-Ching Chen, Shun-Ho Yang, Kai-Wen Yu, Chun-Chiang Wang
  • Publication number: 20180295992
    Abstract: A slide rail assembly includes a first rail, a second rail, a blocking structure and a locking member. The second rail is movable relative to the first rail. The blocking structure is mounted to the first rail. The locking member is movably mounted to the second rail and configured to abut against the blocking structure, in order to prevent the second rail from being moved relative to the first rail from a retracted position along an opening direction.
    Type: Application
    Filed: October 13, 2017
    Publication date: October 18, 2018
    Inventors: Ken-Ching Chen, Shun-Ho Yang, Kai-Wen Yu, Chun-Chiang Wang
  • Publication number: 20180296627
    Abstract: The present invention provides a method for reducing the expressions of the sterol regulatory element-binding protein 1C (SREBP-1C), acetyl-CoA carboxylase (ACC), and stearoyl-CoA desaturase 1 (SCD-1), comprising administering to a subject a composition comprising an effective amount of a longan pericarp extract. The longan pericarp extract significantly inhibits lipogenesis, reduces the glutamic-pyruvic transaminase (GPT) index, and protects the liver.
    Type: Application
    Filed: April 9, 2018
    Publication date: October 18, 2018
    Inventors: Yung-Hsiang Lin, I-Hui Chen, Kai-Wen Kan
  • Publication number: 20180295990
    Abstract: A slide rail assembly includes a rail, a moving rail, and a damping device. When the moving rail is moved relative to the rail, the damping device is pushed by the moving rail to provide damping effect.
    Type: Application
    Filed: October 15, 2017
    Publication date: October 18, 2018
    Inventors: Ken-Ching Chen, Shun-Ho Yang, Kai-Wen Yu, Chun-Chiang Wang
  • Publication number: 20180301991
    Abstract: A switching power converter is provided that cycles a power switch during a group pulse mode of operation to produce a train of pulses within a group period responsive to a control voltage being within a group mode control voltage range. Depending upon the control voltage, the number of pulses in each train of pulses is varied to provide a linear power delivery to the load.
    Type: Application
    Filed: June 19, 2018
    Publication date: October 18, 2018
    Inventors: Fuqiang Shi, Kai-Wen Chin, Cong Zheng, Jianming Yao, Yong Li
  • Patent number: 10103078
    Abstract: A method includes providing a semiconductor device disposed on a substrate, wherein the semiconductor device includes a semiconductor device feature, forming a conductive layer over the substrate such that the conductive layer is electrically coupled to the semiconductor device feature, forming a getter layer over the conductive layer, wherein the getter layer includes a first layer that is formed of titanium and a second layer overlying the first layer that is formed of tantalum nitride, and forming an interconnect layer over the getter layer such that the interconnect layer is electrically coupled to the semiconductor device feature.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: October 16, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Yao-Wen Chang, Cheng-Yuan Tsai, Kai-Wen Cheng
  • Patent number: D832217
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: October 30, 2018
    Assignee: MIEZO INC.
    Inventors: Wei-Ren Lai, Wei-Hsun Wang, Chao-Ting Wu, Yuan-Ping Liu, Kai-Wen Cheng, Chiao-Yu Hsiao