Patents by Inventor Yung Hsiang Liu

Yung Hsiang Liu 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).

  • Patent number: 11102756
    Abstract: In one aspect, a User Equipment (UE) performs Radio Resource Management (RRM) measurements on downlink signals with a first cycle period equal to the UE's Discontinuous Reception (DRX) cycle period. The RRM measurements cycle period is lengthened when UE detects that a signal quality measurement of the primary cell is greater than the sum of a positive offset and a signal quality measurement of a neighboring cell having the best signal quality among all of UE's neighboring cells. In another aspect, a UE de-multiplexes a paging indication which precedes a Synchronization Signal Block (SSB) in time and is generated using the same sequence generation formula as that for generating a Secondary Synchronization Signal (SSS) in the SSB. From the de-multiplexed paging indication, the UE detects that it is paged for message reception and wakes up to receive the message in a next data reception period of the UE's DRX cycle.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: August 24, 2021
    Assignee: MediaTek Inc.
    Inventors: Chi-Hsuan Hsieh, Wei-De Wu, Yung-Hsiang Liu
  • Patent number: 11101684
    Abstract: A power supply method and a power supply apparatus including a power conversion circuit, a first and a second switching circuit, and a control circuit are provided. The power conversion circuit is coupled between a DC power source and a power supply terminal and performs a boosting operation according to a DC voltage of the DC power source to generate a boost voltage. The first switching circuit is coupled between an AC power source and the power supply terminal. The second switching circuit is coupled between the power conversion circuit and the power supply terminal. The control circuit enters a first mode after turning on the first and the second switching circuit, so the first switching circuit transmits a main AC voltage of the AC power source to the power supply terminal in the first mode. The boost voltage is greater than a peak value of the main AC voltage.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: August 24, 2021
    Assignee: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Yung-Hsiang Liu, Wei-Kang Liang, Yu-Kai Wang
  • Publication number: 20210119495
    Abstract: An electronic device includes a case body, a wireless transmission circuit, a voice processing circuit, a control circuit, and a wireless charging circuit. The case body is configured to hold an external electronic device. The wireless transmission circuit is configured to wirelessly connect the external electronic devices. The voice processing circuit is configured to generate a voice command according to a voice signal, and transmit the voice command to the external electronic devices. The wireless charging circuit is configured to couple the external electronic device to receive a first voltage, and convert the first voltage to a storage voltage to supply power to the control circuit, the wireless transmission circuit, and the voice processing circuit.
    Type: Application
    Filed: April 21, 2020
    Publication date: April 22, 2021
    Inventors: Yung-Hsiang LIU, Ying-Hui HO, Ke-Yang LAI
  • Publication number: 20210050735
    Abstract: A charging apparatus is provided. A detection circuit includes a voltage dividing path between an output terminal of a charging circuit and an output terminal of a reference voltage generating circuit. The detection circuit provides a detection signal according to a divided voltage on the voltage dividing path. A control circuit determines whether a load is connected to the charging apparatus according to the detection signal.
    Type: Application
    Filed: February 10, 2020
    Publication date: February 18, 2021
    Applicant: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Po-Chia Chien, Chi-Yin Lo, Yung-Hsiang Liu
  • Publication number: 20210051537
    Abstract: Apparatus and methods are provided for handover robustness. In novel aspect, the UE receives a conditional handover (CHO) command from a source gNB containing a set of candidate cells with corresponding triggering conditions; detects a handover conditions for a target gNB belonging to the set of candidate cells; and performs HO procedure towards the target gNB. In one embodiment, the conditional HO command further configures a validity timer that controls a validity of handover conditions for the set of candidate cells. The validity timer is started upon receiving the conditional HO command, the validity timer is stopped upon detecting at least one events comprising a handover condition is met and a normal handover command is received, and the conditional HO command is set to be invalid upon the expiration of the validity timer.
    Type: Application
    Filed: November 3, 2020
    Publication date: February 18, 2021
    Inventors: Yuanyuan Zhang, Li-Chuan Tseng, Yung-Hsiang Liu
  • Publication number: 20200267690
    Abstract: In one aspect, a User Equipment (UE) performs Radio Resource Management (RRM) measurements on downlink signals with a first cycle period equal to the UE's Discontinuous Reception (DRX) cycle period. The RRM measurements cycle period is lengthened when UE detects that a signal quality measurement of the primary cell is greater than the sum of a positive offset and a signal quality measurement of a neighboring cell having the best signal quality among all of UE's neighboring cells. In another aspect, a UE de-multiplexes a paging indication which precedes a Synchronization Signal Block (SSB) in time and is generated using the same sequence generation formula as that for generating a Secondary Synchronization Signal (SSS) in the SSB. From the de-multiplexed paging indication, the UE detects that it is paged for message reception and wakes up to receive the message in a next data reception period of the UE's DRX cycle.
    Type: Application
    Filed: February 11, 2020
    Publication date: August 20, 2020
    Inventors: Chi-Hsuan Hsieh, Wei-De Wu, Yung-Hsiang Liu
  • Publication number: 20200244098
    Abstract: A power supply method and a power supply apparatus including a power conversion circuit, a first and a second switching circuit, and a control circuit are provided. The power conversion circuit is coupled between a DC power source and a power supply terminal and performs a boosting operation according to a DC voltage of the DC power source to generate a boost voltage. The first switching circuit is coupled between an AC power source and the power supply terminal. The second switching circuit is coupled between the power conversion circuit and the power supply terminal. The control circuit enters a first mode after turning on the first and the second switching circuit, so the first switching circuit transmits a main AC voltage of the AC power source to the power supply terminal in the first mode. The boost voltage is greater than a peak value of the main AC voltage.
    Type: Application
    Filed: September 9, 2019
    Publication date: July 30, 2020
    Applicant: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Yung-Hsiang Liu, Wei-Kang Liang, Yu-Kai Wang
  • Publication number: 20200204986
    Abstract: Various examples and schemes pertaining to uplink data compression (UDC) in mobile communications are described. A processor of an apparatus receives a Packet Data Convergence Protocol (PDCP) Session Data Unit (SDU) and performs uplink data compression (UDC) to compress a data portion of the PDCP SDU to generate a UDC packet. The processor also generates a message authentication code with integrity (MAC-I). The processor also ciphers at least a data portion of the UDC packet to provide a ciphered UDC packet. In case the PDCP SDU contains a Service Data Application Protocol (SDAP) header, the processor extracts the SDAP header from the PDCP SDU prior to performing the UDC, and the processor prepends the SDAP header to the ciphered UDC packet. The processor further constructs a PDCP Protocol Data Unit (PDU) by prepending a PDCP header to either the SDAP header or the ciphered UDC packet.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Inventors: Yung-Hsiang Liu, Yih-Shen Chen
  • Publication number: 20200107223
    Abstract: Methods and apparatus are provided for the RRC message segmentation. In one novel aspect, the UE obtains the size Z of the RRC message and the size limit L of the underlying transmission at layer S of the UE protocol stack, wherein the layer S either the RRC layer, the PDCP layer, or a sublayer between an RRC layer and a PDCP layer. The UE triggers RRC message segmentation upon detecting Z is greater than L. In another embodiment, the layer R of the protocol stack of the UE receives, in order, a sequence of chunks of an RRC message, reassembles of the RRC message, wherein the layer R is selected from a same layer as the layer S and a layer higher than the layer S. In one novel aspect, the size limitation L is either predefined or obtained through network notification or UE inquiry.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 2, 2020
    Inventors: Yung-Hsiang Liu, Chia-Chun Hsu, Nathan Edward Tenny
  • Publication number: 20190179387
    Abstract: A power storage apparatus is provided. The power storage apparatus includes a system host, a battery expansion module, and a communication interface. The system host includes a first switch set and a main battery. The battery expansion module includes a second switch set and an expansion battery. When the system host and the battery expansion module are assembled, an expansion controller and a main controller communicate with each other through the communication interface and selectively control the first switch set and the second switch set to charge the main battery or the expansion battery.
    Type: Application
    Filed: August 10, 2018
    Publication date: June 13, 2019
    Applicant: Merry Electronics(Shenzhen) Co., Ltd.
    Inventors: Chih-Chung Lin, Wei-Chi Chang, Yung-Hsiang Liu
  • Publication number: 20190141567
    Abstract: A method of uplink data compression (UDC) error handling is proposed to handle UDC error and to maintain compression memory synchronization between a transmitter and a receiver. Specifically, UDC checksum operation is proposed to maintain compression memory synchronization between compressor at the transmitter and decompressor at the receiver. The transmitter attaches a checksum to each UDC packet and keeps processed uncompressed data in a compression memory. The receiver decompresses each UDC packet and keeps processed uncompressed data in a compression memory. If the UDC compression memory is unsynchronized and a checksum mismatch is detected, the receiver sends an error indication to the transmitter, which resets its compression memory. The transmitter sends a reset indication to the receiver to reset its compression memory. The UDC compression memory is re-synchronized and UDC is restarted from the beginning.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 9, 2019
    Inventors: Yung-Hsiang Liu, Chia-Chun Hsu, Yih-Shen Chen
  • Publication number: 20180176136
    Abstract: Apparatus and methods are provided for TCP bufferbloat resolution. In one novel aspect, the TCP client monitors a TCP throughput, determines a TCP throughput stability based on a changing rate of the TCP throughput, adjusts a RWND size dynamically based on the determined TCP throughput stability, and sends the dynamically adjusted RWND size to the TCP server for flow control. In one embodiment, the TCP throughput is stable if the changing rate of an increase or decrease of the TCP throughput is smaller than a threshold, otherwise, the TCP throughput is unstable. The TCP client decreases the RWND size if the TCP throughput is stable, otherwise the TCP client increases the RWND size. In one embodiment, the increase of the RWND size uses the default RWND size adjustment method and the decrease of the RWND size is further depending on the increasing or decreasing state of the TCP client.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 21, 2018
    Inventors: Yung-Chun Yang, Cheng-Jie Tsai, Tsern-Huei Lee, Guan-Yu Lin, Yung-Hsiang Liu, Jun-Hua Chou, Chia-Chun Hsu
  • Patent number: 9965365
    Abstract: A power supply failover system/method providing uninterruptable power to protected load devices (PLD) is disclosed. The system includes a failover switch controller (FSC) with inputs from an AC I/V monitor (AIV), AC cycle counter (ACC), failover switch timer (FST), and overcurrent protection timer (OPT). The FSC utilizes these inputs to control failsafe switching of a bypass phase switch (BPS) and AC phase switch (ACS) to the PLD when power from the APS is determined to be good by the AIV. When power from the APS is determined to be compromised by the AIV, the FPS disables the ACS/BPS and enables a DC switch (DCS) and battery isolation switch (BIS) to connect a DC source to the PLD after a time period determined by the FST. APS/DCS overcurrent protection is limited by OPT intervals allowing a smooth transition between the APS to DCS during power failover/failback.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 8, 2018
    Assignee: LITE-ON, INC.
    Inventors: Victor K. J. Lee, Yung Hsiang Liu, Wei Kang Liang, Yu Kai Wang, Chih Hung Chiang
  • Patent number: 9537351
    Abstract: A dual input power supply system/method providing uninterruptable power to a protected load device (PLD) is disclosed. The system includes hybrid switch devices (HSD) comprising semiconductor and relay/contactors that minimize the OPERATE/RELEASE times associated with switchover from a primary power source (PPS) to a secondary power source (SPS). An operate/release controller (ORC) monitors the condition of power provided by the PPS and SPS and determines the optimal transfer time to activate the HSD and switch between the PPS and SPS based on the PLD configuration. Use of the HSD in conjunction with the ORC permits a wide variety of series permutated AC/DC primary (PPS) and secondary (SPS) power sources, EMI snubbers (EMS), bridge rectifier diodes (BRD), AC-DC converters (ADC), and DC-DC converters (DDC) to service the PLD, while simultaneously reducing storage capacitors normally required to cover the OPERATE/RELEASE times associated with traditional PPS/SPS switchover/failover delays.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: January 3, 2017
    Assignee: LITE-ON, INC.
    Inventors: Victor K. J. Lee, Yung Hsiang Liu, Wei Ru Chen, Chen Yu Wang, Chao Han Cheng
  • Publication number: 20160233720
    Abstract: A dual input power supply system/method providing uninterruptable power to a protected load device (PLD) is disclosed. The system includes hybrid switch devices (HSD) comprising semiconductor and relay/contactors that minimize the OPERATE/RELEASE times associated with switchover from a primary power source (PPS) to a secondary power source (SPS). An operate/release controller (ORC) monitors the condition of power provided by the PPS and SPS and determines the optimal transfer time to activate the HSD and switch between the PPS and SPS based on the PLD configuration. Use of the HSD in conjunction with the ORC permits a wide variety of series permutated AC/DC primary (PPS) and secondary (SPS) power sources, EMI snubbers (EMS), bridge rectifier diodes (BRD), AC-DC converters (ADC), and DC-DC converters (DDC) to service the PLD, while simultaneously reducing storage capacitors normally required to cover the OPERATE/RELEASE times associated with traditional PPS/SPS switchover/failover delays.
    Type: Application
    Filed: October 30, 2015
    Publication date: August 11, 2016
    Applicant: Lite-On, Inc.
    Inventors: Victor K. J. LEE, Yung Hsiang LIU, Wei Ru CHEN, Chen Yu WANG, Chao Han CHENG
  • Patent number: 9413270
    Abstract: The present disclosure provides a single-phase three-wire power control system integrating the electricity of a DC power supply device to an AC power source. The single-phase three-wire power control system comprises a single-phase three-wire inverter, a driving unit, a sampling unit and a processing unit. The single-phase three-wire inverter coupled between the DC power supply device and the AC power source converts a DC voltage of the DC power supply device to an output voltage. The driving unit is coupled to the single-phase three-wire inverter. The sampling unit samples the inductor current of an inductor of the single-phase three-wire inverter. The processing unit which is coupled to the driving unit and the sampling unit controls the single-phase three-wire inverter through the driving unit. The processing unit obtains the duty ratio according to the inductance of the inductor, the total variation of the inductor current, the DC voltage and the output voltage.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 9, 2016
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, LITE-ON TECHNOLOGY CORPORATION
    Inventors: Yung-Hsiang Liu, Tsai-Fu Wu, Chih-Hao Chang, Shun-Hung Lo, Kai-Li Wang, Jeng-Gung Yang, Huan-Cheng Liu
  • Publication number: 20160154716
    Abstract: A power supply failover system/method providing uninterruptable power to protected load devices (PLD) is disclosed. The system includes a failover switch controller (FSC) with inputs from an AC I/V monitor (AIV), AC cycle counter (ACC), failover switch timer (FST), and overcurrent protection timer (OPT). The FSC utilizes these inputs to control failsafe switching of a bypass phase switch (BPS) and AC phase switch (ACS) to the PLD when power from the APS is determined to be good by the AIV. When power from the APS is determined to be compromised by the AIV, the FPS disables the ACS/BPS and enables a DC switch (DCS) and battery isolation switch (BIS) to connect a DC source to the PLD after a time period determined by the FST. APS/DCS overcurrent protection is limited by OPT intervals allowing a smooth transition between the APS to DCS during power failover/failback.
    Type: Application
    Filed: January 22, 2016
    Publication date: June 2, 2016
    Applicant: Lite-On, Inc.
    Inventors: Victor K. J. LEE, Yung Hsiang LIU, Wei Kang LIANG, Yu Kai WANG, Chih Hung CHIANG
  • Publication number: 20150207433
    Abstract: The present disclosure provides a single-phase three-wire power control system integrating the electricity of a DC power supply device to an AC power source. The single-phase three-wire power control system comprises a single-phase three-wire inverter, a driving unit, a sampling unit and a processing unit. The single-phase three-wire inverter coupled between the DC power supply device and the AC power source converts a DC voltage of the DC power supply device to an output voltage. The driving unit is coupled to the single-phase three-wire inverter. The sampling unit samples the inductor current of an inductor of the single-phase three-wire inverter. The processing unit which is coupled to the driving unit and the sampling unit controls the single-phase three-wire inverter through the driving unit. The processing unit obtains the duty ratio according to the inductance of the inductor, the total variation of the inductor current, the DC voltage and the output voltage.
    Type: Application
    Filed: January 14, 2015
    Publication date: July 23, 2015
    Inventors: YUNG-HSIANG LIU, TSAI-FU WU, CHIH-HAO CHANG, SHUN-HUNG LO, KAI-LI WANG, JENG-GUNG YANG, HUAN-CHENG LIU
  • Patent number: 9088401
    Abstract: A method for encoding or decoding digital data, a data dissemination device and a data managing device are provided. The method for encoding digital data includes the following steps. A digital data is received. A sign data is encoded into the digital data through a linear combination operation to obtain an encoded digital data, wherein the size of the digital data is not changed after the encoding process. The encoded digital data is disseminated.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 21, 2015
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jing-Shyang Hwu, Yung-Hsiang Liu, Fu-Kuo Tseng, Rong-Jaye Chen
  • Patent number: 9015267
    Abstract: A method for setting addresses of slave devices in a communication network is provided. In the communication network, a master device identifies address-collided slave devices and requests the address-collided slave devices to return their unique identification data. The master device sets addresses of the address-collided slave devices so that each of the slave devices in the communication network has a different address from one another.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 21, 2015
    Assignee: Motech Industries, Inc.
    Inventors: Yung-Hsiang Liu, Kuo-Hsin Chu, Wen-Cheng Liang