Patents by Inventor Chih-Chuan Liang

Chih-Chuan Liang 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: 20240114614
    Abstract: Disclosed is a thermal conduction-electrical conduction isolated circuit board with a ceramic substrate and a power transistor embedded, mainly comprising: a dielectric material layer, a heat-dissipating ceramic block, a securing portion, a stepped metal electrode layer, a power transistor, and a dielectric material packaging, wherein a via hole is formed in the dielectric material layer, the heat-dissipating ceramic block is correspondingly embedded in the via hole, the heat-dissipating ceramic block has a thermal conductivity higher than that of the dielectric material layer and a thickness less than that of the dielectric material layer, the stepped metal electrode layer conducts electricity and heat for the power transistor, the dielectric material packaging is configured to partially expose the source connecting pin, drain connecting pin, and gate connecting pin of the encapsulated stepped metal electrode layer.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: HO-CHIEH YU, CHEN-CHENG-LUNG LIAO, CHUN-YU LIN, JASON AN CHENG HUANG, CHIH-CHUAN LIANG, KUN-TZU CHEN, NAI-HIS HU, LIANG-YO CHEN
  • Publication number: 20230378145
    Abstract: Disclosed is a flip-chip packaged power transistor module having a built-in gate driver, for outputting a high-power signal of at least tens of amperes, the module including at least one power transistor die which has an active side where at least one source pin, at least one drain pin and at least one gate pin are exposed; a ceramic substrate body which has a conducting junction side and a heat spreading side, a minimal spacing of the gate bonding pad from at least one of the source bonding pad or the drain bonding pad being less than 500 ?m, whereby parasitic inductance generated therebetween is reduced; at least one gate driver which has at least one gate pin configured to be soldered to the gate bonding pad, and at least one gate drive pin which corresponds to the gate pin and is configured to be soldered to the drive bonding pad.
    Type: Application
    Filed: May 15, 2023
    Publication date: November 23, 2023
    Inventors: HO-CHIEH YU, CHEN-CHENG-LUNG LIAO, CHUN-YU LIN, JASON AN CHENG HUANG, CHIH-CHUAN LIANG, KUN-TZU CHEN, NAI-HIS HU
  • Publication number: 20200355385
    Abstract: An air conditioning device is provided. The air conditioning device includes a power supplier, a compressor driver, a fan driver, a temperature sensor, a vibration sensor, and an operation processing controller. The power supplier has an input end receiving an input power source and generates a first operating power source and a second operating power source according to the input power source. The compressor driver operates according to the first operating power source to generate a first drive signal to drive a compressor. The fan driver operates according to the first operating power source to generate a second drive signal to drive a fan. The vibration sensor detects vibration information of the air conditioning device.
    Type: Application
    Filed: March 16, 2020
    Publication date: November 12, 2020
    Applicant: Chizentek Inc.
    Inventors: Chih-Chuan Liang, Wen-Hung Lo
  • Publication number: 20190139701
    Abstract: An array wireless energy conversion device includes a first patterned conductive layer and a conductive structure. The first patterned conductive layer includes coil units with different geometric centers, where each coil unit is a polygon, at least one side of each coil unit is adjacent to one side of another coil unit, and each coil unit has a fracture and two corresponding first ends. The conductive structure is disposed under the first patterned conductive layer and connected to the first ends. The conductive structure has a pair of input electrodes, the input electrodes connect to an external current, so that the current sequentially passes through the coil units to form a magnetic field in each coil unit. The current passes through each coil unit in a clockwise direction or an anticlockwise direction, such that the magnetic fields equivalently perpendicular to the first patterned conductive layer have a same polarity direction.
    Type: Application
    Filed: May 25, 2017
    Publication date: May 9, 2019
    Inventor: Chih-Chuan Liang
  • Patent number: 9934924
    Abstract: A bistable relay and a bistable actuator are provided. The bistable actuator includes a magnetic latching mechanism and an electromagnet. The magnetic latching mechanism includes a rotation shaft, a pillar-shaped permanent magnet, a columnar hollow magnetic conductor and two shells, and operates between a first and second stable states. The columnar hollow magnetic conductor surrounds the pillar-shaped permanent magnet wrapping the rotation shaft, and maintains a gap with the pillar-shaped permanent magnet. The electromagnet is connected to the columnar hollow magnetic conductor for driving the pillar-shaped permanent magnet to rotate, so as to switch the magnetic latching mechanism to the stable state. During a process that the magnetic latching mechanism is switched to the stable state, the rotation shaft rotates synchronously along with the magnetic latching mechanism to drive an impact system to move relative to a contact system, so as to contact or disconnect the contact points.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: April 3, 2018
    Inventor: Chih-Chuan Liang
  • Patent number: 9742434
    Abstract: Data compression/decompression methods and data compressor/de-compressor are provided. The data compression method includes the steps of scaling an input signal to generate a scaled signal; transmitting the scaled signal to a differentiator and an assembler; differentiating the scaled signal and a prior signal to generate a differentiation signal detecting zero bits of the differentiation signal to generate a zero range control signal and a zero range control word; refining the differentiation signal according to the zero range control signal to generate a refined signal; and determining to combine the zero range control word with the scaled signal or combine the zero range control word with the refined signal according to the zero range control word to generate a compressed signal.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: August 22, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chih-Chuan Liang, Jen-Hao Yeh, Ming-Yang Chao, Yao-Jen Liu
  • Patent number: 9424161
    Abstract: A trace capture device includes a processing system, a trace capture control unit and a bus unit. The processing system includes at least one function block arranged to generate first data, second data, and correlation information corresponding to the first data. The trace capture control unit is arranged to receive the first data and correlation information corresponding to the first data from the processing system, and generate third data according to the first data and the correlation information. The bus unit is coupled to the processing system, the trace capture control unit and a data link interface. The bus unit is arranged to use the data link interface to transmit information derived from the second data in a first mode, and reuse the first data link interface to transmit information derived from the third data in a second mode.
    Type: Grant
    Filed: June 8, 2014
    Date of Patent: August 23, 2016
    Assignee: MEDIATEK INC.
    Inventors: Jen-Hao Yeh, Chih-Chuan Liang, Ming-Yang Chao
  • Publication number: 20160196941
    Abstract: A bistable relay and a bistable actuator are provided. The bistable actuator includes a magnetic latching mechanism and an electromagnet. The magnetic latching mechanism includes a rotation shaft, a pillar-shaped permanent magnet, a columnar hollow magnetic conductor and two shells, and operates between a first and second stable states. The columnar hollow magnetic conductor surrounds the pillar-shaped permanent magnet wrapping the rotation shaft, and maintains a gap with the pillar-shaped permanent magnet. The electromagnet is connected to the columnar hollow magnetic conductor for driving the pillar-shaped permanent magnet to rotate, so as to switch the magnetic latching mechanism to the stable state. During a process that the magnetic latching mechanism is switched to the stable state, the rotation shaft rotates synchronously along with the magnetic latching mechanism to drive an impact system to move relative to a contact system, so as to contact or disconnect the contact points.
    Type: Application
    Filed: August 12, 2014
    Publication date: July 7, 2016
    Inventor: Chih-Chuan LIANG
  • Publication number: 20150355991
    Abstract: A trace capture device includes a processing system, a trace capture control unit and a bus unit. The processing system includes at least one function block arranged to generate first data, second data, and correlation information corresponding to the first data. The trace capture control unit is arranged to receive the first data and correlation information corresponding to the first data from the processing system, and generate third data according to the first data and the correlation information. The bus unit is coupled to the processing system, the trace capture control unit and a data link interface. The bus unit is arranged to use the data link interface to transmit information derived from the second data in a first mode, and reuse the first data link interface to transmit information derived from the third data in a second mode.
    Type: Application
    Filed: June 8, 2014
    Publication date: December 10, 2015
    Inventors: Jen-Hao Yeh, Chih-Chuan Liang, Ming-Yang Chao
  • Patent number: 8693957
    Abstract: A signal transceiving module includes: a first antenna; a first signal port; and a first processing circuit coupled to the first signal port and arranged to detect a first signal quality of a first received signal received from the first signal port and determine if the first antenna is coupled to the first signal port correctly according to at least the first signal quality.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: April 8, 2014
    Assignee: Mediatek Inc.
    Inventors: Chih-Chuan Liang, Shun-An Yang, Chung-Yen Wu
  • Patent number: 8476996
    Abstract: A bistable switching method and a latching relay using the same are provided. The latching relay includes a rotor shaft, a cylindrical permanent magnet, a first permeability material, a second permeability material, a coil, a hitting device and a contact unit. The method includes the following steps. While the coil is applied first direction currents, the rotor shaft rotates and to make the contact unit from the open state to the closed state or the contact unit keeps the closed state. After the first direction currents are turned off, the contact unit still remains in the closed state. Otherwise, while the coil is applied second direction currents, the rotor shaft rotates and to make the contact unit from the closed state to the open state or the contact unit keeps the open state. After the second direction currents are turned off, the contact unit still remains in the open state.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: July 2, 2013
    Inventor: Chih-Chuan Liang
  • Publication number: 20120282865
    Abstract: A signal transceiving module includes: a first antenna; a first signal port; and a first processing circuit coupled to the first signal port and arranged to detect a first signal quality of a first received signal received from the first signal port and determine if the first antenna is coupled to the first signal port correctly according to at least the first signal quality.
    Type: Application
    Filed: May 5, 2011
    Publication date: November 8, 2012
    Inventors: Chih-Chuan Liang, Shun-An Yang, Chung-Yen Wu
  • Publication number: 20120049987
    Abstract: A bistable switching method and a latching relay using the same are provided. The latching relay includes a rotor shaft, a cylindrical permanent magnet, a first permeability material, a second permeability material, a coil, a hitting device and a contact unit. The method includes the following steps. While the coil is applied first direction currents, the rotor shaft rotates and to make the contact unit from the open state to the closed state or the contact unit keeps the closed state. After the first direction currents are turned off, the contact unit still remains in the closed state. Otherwise, while the coil is applied second direction currents, the rotor shaft rotates and to make the contact unit from the closed state to the open state or the contact unit keeps the open state. After the second direction currents are turned off, the contact unit still remains in the open state.
    Type: Application
    Filed: August 18, 2011
    Publication date: March 1, 2012
    Inventor: Chih-Chuan Liang