Patents by Inventor Chao-Chi Yang

Chao-Chi Yang 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: 20210320508
    Abstract: An inductive electronic identification device and a power-supply-compensation circuit of the same are provided. The power-supply-compensation circuit has a power supply unit and a compensation circuit, and connects to a load unit for supplying the load unit to operate. The compensation circuit receives the compensation signal from the load unit, so that the voltage regulator of the compensation circuit controls the voltage rise and fall of one end of the capacitor of the compensation circuit. The capacitive element switches to the charging or discharging mode according to the power consumption of the load unit. In this way, electrical charges are stored when the load unit consumes less power, and compensation current is provided when the load unit consumes more power, so as to maintain the normal operation of the load unit.
    Type: Application
    Filed: April 6, 2021
    Publication date: October 14, 2021
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventor: Chao-Chi YANG
  • Publication number: 20210051356
    Abstract: A program recommendation method applicable to a television is provided. The program recommendation method includes the steps of obtaining information of a user's current watching behavior regarding the program genres in the current time interval of the time intervals for the current time; obtaining information of the user's past personal preference regarding the program genres in one of the time intervals corresponding to the current time interval for the past time; analyzing information of the user's current personal preference regarding the program genres in the current time interval of the time intervals for the current time according to the information of the user's current watching behavior and the information of the user's past personal preference; and generating, and providing one or more recommendations of programs available in the current time interval of the time intervals to the user according to the information of the user's current personal preference.
    Type: Application
    Filed: August 15, 2019
    Publication date: February 18, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chao-Chi Yang, Wen-Ching Liao, Wei-Te Hu, Chi-Yuan Lai
  • Publication number: 20200387710
    Abstract: An operating method with goods information is applicable to an electronic device. The operation method includes: obtaining image information associated with one or more goods objects on a target electronic shelf among a plurality of electronic shelves in a network; and performing first communicating with a server for controlling the electronic shelves in the network according to either or both of the image information and feature information associated with the one or more goods objects, wherein feature information is extracted from the image information and the first communicating includes wirelessly transmitting either or both of the image information and the feature information associated with the one or more goods objects to the server.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 10, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wen-Ching Liao, Chao-Chi Yang, Wei-Te Hu, Chi-Yuan Lai, Kuan-Liang Kuo
  • Patent number: 10121048
    Abstract: A fingerprint sensing system has a fingerprint sensing device and a power supply circuit. The fingerprint sensing device has a high-voltage input terminal and a low-voltage input terminal. During scan phases of the fingerprint sensing device, the power supply circuit provides a first voltage to the high voltage input terminal and provides a second voltage to the low voltage input terminal. During the read phases of the fingerprint sensing device, the power supply circuit provides a third voltage to the high voltage input terminal and provides a fourth voltage to the low voltage input terminal. A first voltage difference is between the first voltage and the second voltage. A second voltage difference is between the third voltage and the fourth voltage. The first voltage difference is greater than the second voltage difference.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: November 6, 2018
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi Yang, Jui-Che Lin, Tung-An Yao, Chung-Han Cheng, Chung-An Tang
  • Publication number: 20180032779
    Abstract: A fingerprint sensing system has a fingerprint sensing device and a power supply circuit. The fingerprint sensing device has a high-voltage input terminal and a low-voltage input terminal. During scan phases of the fingerprint sensing device, the power supply circuit provides a first voltage to the high voltage input terminal and provides a second voltage to the low voltage input terminal. During the read phases of the fingerprint sensing device, the power supply circuit provides a third voltage to the high voltage input terminal and provides a fourth voltage to the low voltage input terminal. A first voltage difference is between the first voltage and the second voltage. A second voltage difference is between the third voltage and the fourth voltage. The first voltage difference is greater than the second voltage difference.
    Type: Application
    Filed: January 4, 2017
    Publication date: February 1, 2018
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi YANG, Jui-Che LIN, Tung-An YAO, Chung-Han CHENG, Chung-An TANG
  • Patent number: 9734382
    Abstract: A fingerprint sensor having ESD protection has a body and an ESD protection circuit. The body has a fingerprint sensing electrode array and an ESD protection electrode providing an ESD protection to the fingerprint sensing electrode array. The ESD protection circuit is connected respectively to the ESD protection electrode, a high electric potential terminal and a low electric potential terminal. The ESD protection circuit provides a first static electricity discharge path to the high electric potential terminal, and a second static electricity discharge path to the low electric potential terminal. The fingerprint sensor provides two static electricity discharge paths, so that the fingerprint sensor has a better ESD protection.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: August 15, 2017
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chun-Chi Wang, Tsung-Yin Chiang, Chao-Chi Yang
  • Patent number: 9721140
    Abstract: A sensing method of a fingerprint sensor includes the following steps: (a) applying a first voltage, a second voltage and a third voltage to a first node connected to an electrode plate to be measured, a second node disconnected from the first node, and a conductor adjacent to the electrode plate to be measured, respectively; (b) providing a first finger drive voltage for a finger; (c) stopping applying the first, second and third voltages to the first node, the second node and the conductor, respectively; (d) after step (c), applying a fourth voltage to the conductor, and connecting the first node to the second node; (e) after steps (b) and (c), providing a second finger drive voltage for the finger; and (f) after steps (d) and (e), obtaining a measurement result of the electrode plate to be measured according to a signal on the second node.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: August 1, 2017
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi Yang, Jui-Che Lin
  • Patent number: 9613247
    Abstract: A sensing method and circuit of fingerprint sensor is disclosed. In a first phase, the sensing method supplies a first to third voltages to an electrode plate to be measured, a read-out circuit of the electrode plate to be measured and a conductor adjacent to the electrode plate to be measured, respectively. In a second phase, the sensing method stops supplying the first to third voltages and supplies voltage to the conductor and connects the electrode plate to be measured to the read-out circuit so the read-out circuit reads out a measurement result of the electrode plate to be measured. According to the sensing method and circuit, the measurement result of the electrode plate to be measured is not affect by capacitors between the electrode plate to be measured and the conductor.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 4, 2017
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventor: Chao-Chi Yang
  • Patent number: 9529020
    Abstract: A circuit and a method for sensing differential capacitance involve using plural storing capacitors to repeatedly sample charges of the differential capacitance in an over-sampling manner, and storing the charges sampled in different transfer rounds into different storing capacitors instead of repeatedly transferring charges for a single storing capacitor, so as to collect charge averages about both inputs and noises and in turn effectively reduce RF interference and source noises.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: December 27, 2016
    Assignee: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chao-Chi Yang, Shih-How Peng
  • Publication number: 20160239700
    Abstract: A sensing method of a fingerprint sensor includes the following steps: (a) applying a first voltage, a second voltage and a third voltage to a first node connected to an electrode plate to be measured, a second node disconnected from the first node, and a conductor adjacent to the electrode plate to be measured, respectively; (b) providing a first finger drive voltage for a finger; (c) stopping applying the first, second and third voltages to the first node, the second node and the conductor, respectively; (d) after step (c), applying a fourth voltage to the conductor, and connecting the first node to the second node; (e) after steps (b) and (c), providing a second finger drive voltage for the finger; and (f) after steps (d) and (e), obtaining a measurement result of the electrode plate to be measured according to a signal on the second node.
    Type: Application
    Filed: February 15, 2016
    Publication date: August 18, 2016
    Inventors: Chao-Chi Yang, Jui-Che Lin
  • Publication number: 20160188948
    Abstract: A sensing method and circuit of fingerprint sensor is disclosed and the sensing method has steps of (a) in the first phase, supplying a first voltage to the electrode plate to be measured and a conductor adjacent to the electrode plate to be measured and setting a voltage of a sensing capacitor, wherein the sensing capacitor is coupled between a first input and an output terminal of the operational amplifier and the electrode plate to be measured disconnects to the first input terminal of the operation amplifier; and (b) in the second phase, stopping to supply the first voltage to the electrode plate to be measured and the conductor, supplying a second voltage to the conductor and a second input terminal of the operational amplifier, and connecting the electrode plate to be measured to the first input terminal to change the voltage of the sensing capacitor.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 30, 2016
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventor: Chao-Chi Yang
  • Publication number: 20160188949
    Abstract: A fingerprint sensing device comprises a shielding plate configured between an electrode plate and a detection circuit for reducing a parasitic capacitor between the electrode plate and a conductor thereunder. Consequently, a larger signal dynamic range can be achieved and the electrode plate can be prevented from operation noise interference of the detection circuit. The shielding plate and the electrode plate have the same potential. Accordingly, a parasitic capacitor effect between the shielding plate and the electrode plate can be eliminated. Thus, the fingerprint sensing device of the present invention has a better noise resistibility.
    Type: Application
    Filed: December 22, 2015
    Publication date: June 30, 2016
    Inventor: Chao-Chi Yang
  • Publication number: 20160171275
    Abstract: A fingerprint sensor having ESD protection has a body and an ESD protection circuit. The body has a fingerprint sensing electrode array and an ESD protection electrode providing an ESD protection to the fingerprint sensing electrode array. The ESD protection circuit is connected respectively to the ESD protection electrode, a high electric potential terminal and a low electric potential terminal. The ESD protection circuit provides a first static electricity discharge path to the high electric potential terminal, and a second static electricity discharge path to the low electric potential terminal. The fingerprint sensor provides two static electricity discharge paths, so that the fingerprint sensor has a better ESD protection.
    Type: Application
    Filed: November 6, 2015
    Publication date: June 16, 2016
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventors: Chun-Chi Wang, Tsung-Yin Chiang, Chao-Chi Yang
  • Publication number: 20160171272
    Abstract: A sensing method and circuit of fingerprint sensor is disclosed. In a first phase, the sensing method supplies a first to third voltages to an electrode plate to be measured, a read-out circuit of the electrode plate to be measured and a conductor adjacent to the electrode plate to be measured, respectively. In a second phase, the sensing method stops supplying the first to third voltages and supplies voltage to the conductor and connects the electrode plate to be measured to the read-out circuit so the read-out circuit reads out a measurement result of the electrode plate to be measured. According to the sensing method and circuit, the measurement result of the electrode plate to be measured is not affect by capacitors between the electrode plate to be measured and the conductor.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 16, 2016
    Applicant: ELAN MICROELECTRONICS CORPORATION
    Inventor: Chao-Chi Yang
  • Patent number: 9267976
    Abstract: A circuit for sensing a differential capacitance includes a charge-storing circuit to generate a first output voltage and a second output voltage related to capacitances at two terminals of the differential capacitance, respectively, an operational amplifier to amplify the difference between the first and second output voltages to generate a sensing value, a first sampling capacitor having one terminal connected to the negative input terminal and the other terminal receiving the first or second output voltage, and a second sampling capacitor having one terminal connected to the negative input terminal and the other terminal switched to the output terminal of the operational amplifier. The second sampling capacitor stores a non-ideal error value to offset the non-ideal effect of the operational amplifier imparted on the sensing value.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: February 23, 2016
    Assignee: Elan Microelectronics Corporation
    Inventors: Chao-Chi Yang, Shih-How Peng
  • Publication number: 20150185257
    Abstract: A circuit and a method for sensing differential capacitance involve using plural storing capacitors to repeatedly sample charges of the differential capacitance in an over-sampling manner, and storing the charges sampled in different transfer rounds into different storing capacitors instead of repeatedly transferring charges for a single storing capacitor, so as to collect charge averages about both inputs and noises and in turn effectively reduce RF interference and source noises.
    Type: Application
    Filed: March 13, 2015
    Publication date: July 2, 2015
    Inventors: Chao-Chi YANG, Shih-How PENG
  • Patent number: 9007074
    Abstract: A circuit and a method for sensing differential capacitance involve using plural storing capacitors to repeatedly sample charges of the differential capacitance in an over-sampling manner, and storing the charges sampled in different transfer rounds into different storing capacitors instead of repeatedly transferring charges for a single storing capacitor, so as to collect charge averages about both inputs and noises and in turn effectively reduce RF interference and source noises.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: April 14, 2015
    Assignee: Elan Microelectronics Corporation
    Inventors: Chao-Chi Yang, Shih-How Peng
  • Publication number: 20150089086
    Abstract: An A/V information updating control system has an A/V host and a control device. The A/V host stores an A/V information. The control device is connected with multiple user-end apparatuses. The control device receives an A/V adjusting command from any one of the user-end apparatuses, and updates the A/V information of the A/V host according to the A/V adjusting command. The control device thus sends the updated A/V information to the user-end apparatuses. Hence, each user who has the user-end apparatus can review the updated A/V information in real time.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Inventor: Chao-Chi YANG
  • Publication number: 20140266258
    Abstract: A circuit for sensing a differential capacitance includes a charge-storing circuit to generate a first output voltage and a second output voltage related to capacitances at two terminals of the differential capacitance, respectively, an operational amplifier to amplify the difference between the first and second output voltages to generate a sensing value, a first sampling capacitor having one terminal connected to the negative input terminal and the other terminal receiving the first or second output voltage, and a second sampling capacitor having one terminal connected to the negative input terminal and the other terminal switched to the output terminal of the operational amplifier. The second sampling capacitor stores a non-ideal error value to offset the non-ideal effect of the operational amplifier imparted on the sensing value.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 18, 2014
    Applicant: Elan Microelectronics Corporation
    Inventors: Chao-Chi YANG, Shih-How PENG
  • Patent number: 8803534
    Abstract: A circuit for sensing a differential capacitance includes a charge-storing circuit to generate a first output voltage and a second output voltage related to capacitances at two terminals of the differential capacitance, respectively, an operational amplifier to amplify the difference between the first and second output voltages to generate a sensing value, a first sampling capacitor having one terminal connected to the negative input terminal and the other terminal receiving the first or second output voltage, and a second sampling capacitor having one terminal connected to the negative input terminal and the other terminal switched to the output terminal of the operational amplifier. The second sampling capacitor stores a non-ideal error value to offset the non-ideal effect of the operational amplifier imparted on the sensing value.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: August 12, 2014
    Assignee: Elan Microelectronics Corp.
    Inventors: Chao-Chi Yang, Shih-How Peng