Patents by Inventor Ying-Zu Lin

Ying-Zu Lin 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: 11444634
    Abstract: A time-interleaved noise-shaping successive-approximation analog-to-digital converter (TI NS-SAR ADC) is shown. A first successive-approximation channel has a first set of successive-approximation registers, and a first coarse comparator operative to coarsely adjust the first set of successive-approximation registers. A second successive-approximation channel has a second set of successive-approximation registers, and a second coarse comparator operative to coarsely adjust the second set of successive-approximation registers. A fine comparator is provided to finely adjust the first set of successive-approximation registers and the second set of successive-approximation registers alternately. A noise-shaping circuit is provided to sample residues of the first and second successive-approximation channels for the fine comparator to finely adjust the first and second sets of successive-approximation registers.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: September 13, 2022
    Assignee: MEDIATEK INC.
    Inventors: Chin-Yu Lin, Ying-Zu Lin, Chih-Hou Tsai, Chao-Hsin Lu
  • Publication number: 20210266006
    Abstract: A time-interleaved noise-shaping successive-approximation analog-to-digital converter (TI NS-SAR ADC) is shown. A first successive-approximation channel has a first set of successive-approximation registers, and a first coarse comparator operative to coarsely adjust the first set of successive-approximation registers. A second successive-approximation channel has a second set of successive-approximation registers, and a second coarse comparator operative to coarsely adjust the second set of successive-approximation registers. A fine comparator is provided to finely adjust the first set of successive-approximation registers and the second set of successive-approximation registers alternately. A noise-shaping circuit is provided to sample residues of the first and second successive-approximation channels for the fine comparator to finely adjust the first and second sets of successive-approximation registers.
    Type: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventors: Chin-Yu LIN, Ying-Zu LIN, Chih-Hou TSAI, Chao-Hsin LU
  • Patent number: 11043958
    Abstract: A time-interleaved noise-shaping successive-approximation analog-to-digital converter (TI NS-SAR ADC) is shown. A first successive-approximation channel has a first set of successive-approximation registers, and a first coarse comparator operative to coarsely adjust the first set of successive-approximation registers. A second successive-approximation channel has a second set of successive-approximation registers, and a second coarse comparator operative to coarsely adjust the second set of successive-approximation registers. A fine comparator is provided to finely adjust the first set of successive-approximation registers and the second set of successive-approximation registers alternately. A noise-shaping circuit is provided to sample residues of the first and second successive-approximation channels for the fine comparator to finely adjust the first and second sets of successive-approximation registers.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: June 22, 2021
    Assignee: MEDIATEK INC.
    Inventors: Chin-Yu Lin, Ying-Zu Lin, Chih-Hou Tsai, Chao-Hsin Lu
  • Publication number: 20210119637
    Abstract: A time-interleaved noise-shaping successive-approximation analog-to-digital converter (TI NS-SAR ADC) is shown. A first successive-approximation channel has a first set of successive-approximation registers, and a first coarse comparator operative to coarsely adjust the first set of successive-approximation registers. A second successive-approximation channel has a second set of successive-approximation registers, and a second coarse comparator operative to coarsely adjust the second set of successive-approximation registers. A fine comparator is provided to finely adjust the first set of successive-approximation registers and the second set of successive-approximation registers alternately. A noise-shaping circuit is provided to sample residues of the first and second successive-approximation channels for the fine comparator to finely adjust the first and second sets of successive-approximation registers.
    Type: Application
    Filed: August 11, 2020
    Publication date: April 22, 2021
    Inventors: Chin-Yu LIN, Ying-Zu LIN, Chih-Hou TSAI, Chao-Hsin LU
  • Patent number: 10840932
    Abstract: A noise-shaping successive approximation analog-to-digital converter (NS-SAR ADC) using a passive noise-shaping technique with 1-input-pair SAR comparator is introduced. A residue sampling and integration circuit is coupled between a DAC and the comparator, for sampling a residue voltage generated by the DAC and charge-sharing of the sampled residue voltage. A first integral capacitor is coupled between a first input terminal of a comparator and a first output terminal of a DAC. After a first residue capacitor samples a residue generated by the DAC, the first residue capacitor is coupled to the first integral capacitor for charge-sharing of the residue voltage.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: November 17, 2020
    Assignee: MEDIATEK INC.
    Inventors: Ying-Zu Lin, Chin-Yu Lin, Chih-Hou Tsai, Shan-Chih Tsou, Chao-Hsin Lu
  • Publication number: 20200119744
    Abstract: A noise-shaping successive approximation analog-to-digital converter (NS-SAR ADC) using a passive noise-shaping technique with 1-input-pair SAR comparator is introduced. A residue sampling and integration circuit is coupled between a DAC and the comparator, for sampling a residue voltage generated by the DAC and charge-sharing of the sampled residue voltage. A first integral capacitor is coupled between a first input terminal of a comparator and a first output terminal of a DAC. After a first residue capacitor samples a residue generated by the DAC, the first residue capacitor is coupled to the first integral capacitor for charge-sharing of the residue voltage.
    Type: Application
    Filed: August 13, 2019
    Publication date: April 16, 2020
    Inventors: Ying-Zu LIN, Chin-Yu LIN, Chih-Hou TSAI, Shan-Chih TSOU, Chao-Hsin LU
  • Patent number: 10236903
    Abstract: A charge compensation circuit for use in an analog-to-digital converter (ADC) includes at least one capacitor and at least one logic circuit. A first terminal of the capacitor is coupled to a reference voltage of the analog-to-digital converter. The logic circuit is configured to adjust a voltage at a second terminal of the capacitor according to a control signal. The control signal is determined according to at least one output bit from the analog-to-digital converter.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: March 19, 2019
    Assignee: MEDIATEK INC.
    Inventors: Ying-Zu Lin, Rong-Sing Chu
  • Patent number: 10177216
    Abstract: A metal-oxide-metal (MOM) capacitor is provided in the present invention. The MOM capacitor includes a capacitor element, wherein the capacitor element includes a first electrode and a second electrode. A projection of the first electrode includes a closed pattern in the vertical projection direction. A projection of the second electrode is surrounded by the closed pattern of the projection of the first electrode in the vertical projection direction.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: January 8, 2019
    Assignee: MEDIATEK INC.
    Inventors: Chih-Hou Tsai, Wei-Hao Tsai, Rong-Sing Chu, Ying-Zu Lin, Chao-Hsin Lu
  • Publication number: 20170352719
    Abstract: A metal-oxide-metal (MOM) capacitor is provided in the present invention. The MOM capacitor includes a capacitor element, wherein the capacitor element includes a first electrode and a second electrode. A projection of the first electrode includes a closed pattern in the vertical projection direction. A projection of the second electrode is surrounded by the closed pattern of the projection of the first electrode in the vertical projection direction.
    Type: Application
    Filed: May 2, 2017
    Publication date: December 7, 2017
    Inventors: Chih-Hou Tsai, Wei-Hao Tsai, Rong-Sing Chu, Ying-Zu Lin, Chao-Hsin Lu
  • Publication number: 20170346498
    Abstract: A charge compensation circuit for use in an analog-to-digital converter (ADC) includes at least one capacitor and at least one logic circuit. A first terminal of the capacitor is coupled to a reference voltage of the analog-to-digital converter. The logic circuit is configured to adjust a voltage at a second terminal of the capacitor according to a control signal. The control signal is determined according to at least one output bit from the analog-to-digital converter.
    Type: Application
    Filed: April 24, 2017
    Publication date: November 30, 2017
    Inventors: Ying-Zu LIN, Rong-Sing CHU
  • Patent number: 9819354
    Abstract: A reference voltage generator for an analog-to-digital converter (ADC) includes a current source coupled to a power supply, and a first transistor coupled between the current source and a first resistive circuit. The first resistive circuit is coupled to the first transistor. The reference voltage generator further includes a second transistor having a gate coupled to the current source and a gate of the first transistor, for providing a reference voltage to the ADC, an impedance circuit coupled to the second transistor, for selectively providing a variable impedance.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: November 14, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chihhou Tsai, Ying-Zu Lin
  • Publication number: 20170257110
    Abstract: A reference voltage generator for an analog-to-digital converter (ADC) includes a current source coupled to a power supply, and a first transistor coupled between the current source and a first resistive circuit. The first resistive circuit is coupled to the first transistor. The reference voltage generator further includes a second transistor having a gate coupled to the current source and a gate of the first transistor, for providing a reference voltage to the ADC, an impedance circuit coupled to the second transistor, for selectively providing a variable impedance.
    Type: Application
    Filed: May 19, 2017
    Publication date: September 7, 2017
    Inventors: Chihhou TSAI, Ying-Zu LIN
  • Patent number: 9698813
    Abstract: An input buffer for an ADC is provided. The input buffer includes a receiving circuit and an impedance circuit. The receiving circuit is coupled between a power supply and a sample-and-hold circuit of the ADC, and receives an analog input signal and generating an analog signal. The impedance circuit is coupled to the receiving circuit, and selectively provides a variable impedance. When the sample-and-hold circuit of the ADC is operated in a first phase, the impedance circuit provides a small impedance, and when the sample-and-hold circuit of the ADC is operated in a second phase, the impedance circuit provides a large impedance.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 4, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chihhou Tsai, Ying-Zu Lin
  • Publication number: 20170155399
    Abstract: An input buffer for an ADC is provided. The input buffer includes a receiving circuit and an impedance circuit. The receiving circuit is coupled between a power supply and a sample-and-hold circuit of the ADC, and receives an analog input signal and generating an analog signal. The impedance circuit is coupled to the receiving circuit, and selectively provides a variable impedance. When the sample-and-hold circuit of the ADC is operated in a first phase, the impedance circuit provides a small impedance, and when the sample-and-hold circuit of the ADC is operated in a second phase, the impedance circuit provides a large impedance.
    Type: Application
    Filed: October 26, 2016
    Publication date: June 1, 2017
    Inventors: Chihhou TSAI, Ying-Zu LIN
  • Patent number: 9142181
    Abstract: A display driver, which comprises: a first predetermined voltage level providing apparatus, for providing a first predetermined voltage level group comprising at least one first predetermined voltage level; a first image data providing apparatus, for outputting a first image data; and a detection controlling circuit, for determining if an output terminal of the first image data providing apparatus is pre-charged to the first predetermined voltage level according to a relation between an absolute value of a voltage level of the first image data and an absolute value of the first predetermined voltage level.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: September 22, 2015
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chia-Hsun Kuo, Chia-Wei Su, Ji-Ting Chen, Shun-Hsun Yang, Wei-Hsiang Hung, Ying-Zu Lin, Li-Tang Lin
  • Publication number: 20140320474
    Abstract: A display driver, which comprises: a first predetermined voltage level providing apparatus, for providing a first predetermined voltage level group comprising at least one first predetermined voltage level; a first image data providing apparatus, for outputting a first image data; and a detection controlling circuit, for determining if an output terminal of the first image data providing apparatus is pre-charged to the first predetermined voltage level according to a relation between an absolute value of a voltage level of the first image data and an absolute value of the first predetermined voltage level.
    Type: Application
    Filed: August 12, 2013
    Publication date: October 30, 2014
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chia-Hsun Kuo, Chia-Wei Su, Ji-Ting Chen, Shun-Hsun Yang, Wei-Hsiang Hung, Ying-Zu Lin, Li-Tang Lin
  • Publication number: 20140247075
    Abstract: An interface circuit for signal transmission includes an amplifying circuit, a de-skew circuit and a latching unit. The amplifying circuit receives an input clock signal and outputs an output clock signal after amplifying the input clock signal. The de-skew circuit receives the output clock signal and outputs a de-skew clock signal as a trigger signal after removing a skew time of the output clock signal. The latching unit includes multiple sampling circuits, respectively receives multiple inputting data signals. The sampling circuits are controlled by the trigger signal to sample the inputting data signals and output multiple outputting data signals. The voltage amplitudes of the outputting data signals are larger than the voltage amplitudes of the inputting data signals and satisfy a required voltage amplitude by a subsequent circuit.
    Type: Application
    Filed: August 22, 2013
    Publication date: September 4, 2014
    Applicant: Novatek Microelectronics Corp.
    Inventor: Ying-Zu Lin
  • Patent number: 8816737
    Abstract: An interface circuit for signal transmission includes an amplifying circuit, a de-skew circuit and a latching unit. The amplifying circuit receives an input clock signal and outputs an output clock signal after amplifying the input clock signal. The de-skew circuit receives the output clock signal and outputs a de-skew clock signal as a trigger signal after removing a skew time of the output clock signal. The latching unit includes multiple sampling circuits, respectively receives multiple inputting data signals. The sampling circuits are controlled by the trigger signal to sample the inputting data signals and output multiple outputting data signals. The voltage amplitudes of the outputting data signals are larger than the voltage amplitudes of the inputting data signals and satisfy a required voltage amplitude by a subsequent circuit.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: August 26, 2014
    Assignee: Novatek Microelectronics Corp.
    Inventor: Ying-Zu Lin
  • Publication number: 20140160104
    Abstract: A display driving method and an associated driving circuit are provided, where the display driving method includes: checking relationships between two voltage levels respectively represented by two continuously received digital codes received by a specific digital code input terminal and a first predetermined threshold, and preferably further checking a relationship between at least one voltage level represented by at least one digital code of the two continuously received digital codes and a first predetermined zone, in order to determine whether to pre-charge a specific set of display cells within a plurality of sets of display cells, the specific set corresponding to the specific digital code input terminal; when it is determined to pre-charge the specific set of display cells, temporarily conducting a pre-charging voltage generator to the specific set of display cells to pre-charge the specific set of display cells.
    Type: Application
    Filed: August 12, 2013
    Publication date: June 12, 2014
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Ying-Zu Lin, Chia-Wei Su, Shun-Hsun Yang, Chia-Hsun Kuo, Li-Tang Lin
  • Patent number: 8310388
    Abstract: The configurations and adjusting method of a subrange analog-to-digital converter (ADC) are provided. The provided subrange ADC includes a X.5-bit flash ADC, a Y-bit SAR ADC and a (X+Y)-bit segmented capacitive digital-to-analog converter (DAC).
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: November 13, 2012
    Assignee: National Cheng Kung University
    Inventors: Soon-Jyh Chang, Ying-Zu Lin, Chun-Cheng Liu