Patents by Inventor Xiao Bo Zhou

Xiao Bo Zhou 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: 11784658
    Abstract: A successive approximation register analog to digital converter includes a sampling circuitry, a comparator circuit, and a controller circuitry. The sampling circuitry generates first and second signals according to a sampled signal. The comparator circuit compares the first signal with the second signal to generate first decision signals. The controller circuitry generates digital codes according to the first decision signals, and controls the comparator circuit to perform comparisons repeatedly to generate second decision signals, in order to generate a digital output according to the digital codes, a statistical noise value, and the second decision signals.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: October 10, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventor: Xiao-Bo Zhou
  • Publication number: 20230024327
    Abstract: An analog to digital convertor circuit includes an input circuit and a switched capacitor circuit. The input circuit is configured to selectively drain a first current from a first node or drain a second current from a second node according to a first bit and a second bit that have opposite logic values. The switched capacitor circuit is configured to compensate a capacitance value of one of the first node and the second node according to the first bit and the second bit.
    Type: Application
    Filed: April 27, 2022
    Publication date: January 26, 2023
    Inventor: XIAO-BO ZHOU
  • Publication number: 20220399898
    Abstract: A successive approximation register analog to digital converter includes a sampling circuitry, a comparator circuit, and a controller circuitry. The sampling circuitry generates first and second signals according to a sampled signal. The comparator circuit compares the first signal with the second signal to generate first decision signals. The controller circuitry generates digital codes according to the first decision signals, and controls the comparator circuit to perform comparisons repeatedly to generate second decision signals, in order to generate a digital output according to the digital codes, a statistical noise value, and the second decision signals.
    Type: Application
    Filed: March 16, 2022
    Publication date: December 15, 2022
    Inventor: XIAO-BO ZHOU
  • Publication number: 20210328129
    Abstract: The invention relates to a sensor element that is capable of sensing dynamic loads and/or vibrations in a machine component, the sensor element comprising a multilayer coating (302) deposited on a substrate (300?). The multilayer coating comprises a sensitive layer (304) of a piezoelectric material and a first electrode layer (308) of a metallic material, which electrode layer serves as a first electrode of the sensor element. The substrate (300?) may serve as the second electrode. In order to seal any pinholes in the sensitive layer (304) and thereby prevent short-circuiting between the first and second electrodes, the multilayer coating further comprises a pinhole sealing layer (306) deposited on top of the sensitive layer (304), so as to be sandwiched between the sensitive layer and the first electrode layer (308).
    Type: Application
    Filed: February 4, 2008
    Publication date: October 21, 2021
    Inventor: Xiao Bo Zhou
  • Patent number: 10985773
    Abstract: An analog to digital converting module includes a comparator, at least one digital to analog convertor, and a reference buffer. The comparator is configured to compare a first input signal and a second input signal so as to output a comparing signal. The at least one at least one digital to analog convertor includes at least one capacitor. The reference buffer is configured to provide a reference signal. The at least one digital to analog convertor receives the reference signal such that a ripple signal is generated according to a change of a voltage of the reference signal. The capacitance of the capacitor of the at least one digital to analog convertor is adjusted based on the ripple signal.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: April 20, 2021
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Xiao-Bo Zhou, Shih-Hsiung Huang
  • Patent number: 10855301
    Abstract: A digital-to-analog converter (DAC) device includes a DAC circuitry and a calibration circuitry. The DAC circuitry includes first and second DAC circuits which generate first and second signals according to an input pattern. The input pattern includes at least one of first logic value and at least one of second logic value that have different numbers. The calibration circuitry performs a calibration operation according to first and second comparison results, to generate a control signal for controlling the second DAC circuit. The first comparison results are comparison results of the first and the second signals when the input pattern is a first pattern, the second comparison results are comparison results of the first and the second signals when the input pattern is a second pattern, and the first pattern is inverse to the second pattern.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: December 1, 2020
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventor: Xiao-Bo Zhou
  • Publication number: 20200350922
    Abstract: An analog to digital converting module includes a comparator, at least one digital to analog convertor, and a reference buffer. The comparator is configured to compare a first input signal and a second input signal so as to output a comparing signal. The at least one at least one digital to analog convertor includes at least one capacitor. The reference buffer is configured to provide a reference signal. The at least one digital to analog convertor receives the reference signal such that a ripple signal is generated according to a change of a voltage of the reference signal. The capacitance of the capacitor of the at least one digital to analog convertor is adjusted based on the ripple signal.
    Type: Application
    Filed: April 21, 2020
    Publication date: November 5, 2020
    Inventors: Xiao-Bo ZHOU, Shih-Hsiung HUANG
  • Publication number: 20200274544
    Abstract: A digital-to-analog converter (DAC) device includes a DAC circuitry and a calibration circuitry. The DAC circuitry includes first and second DAC circuits which generate first and second signals according to an input pattern. The input pattern includes at least one of first logic value and at least one of second logic value that have different numbers. The calibration circuitry performs a calibration operation according to first and second comparison results, to generate a control signal for controlling the second DAC circuit. The first comparison results are comparison results of the first and the second signals when the input pattern is a first pattern, the second comparison results are comparison results of the first and the second signals when the input pattern is a second pattern, and the first pattern is inverse to the second pattern.
    Type: Application
    Filed: February 10, 2020
    Publication date: August 27, 2020
    Inventor: Xiao-Bo ZHOU
  • Patent number: 10069509
    Abstract: A sigma delta modulator includes a sigma delta modulating loop and a plurality of adjusting loops. The sigma delta modulating loop processes an input signal and an adjustment signal based on a first clock signal, so as to generate a quantized output signal. The first clock signal has a clock cycle. The sigma delta modulating loop has a first delay time that is the same as M times of the clock cycle. M is an integral multiple of 0.5 and is larger than 1. The adjusting loops delay the quantized output signal for second delay times, respectively, so as to generate the adjustment signal.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 4, 2018
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventor: Xiao-Bo Zhou
  • Publication number: 20180159550
    Abstract: A sigma delta modulator includes a sigma delta modulating loop and a plurality of adjusting loops. The sigma delta modulating loop processes an input signal and an adjustment signal based on a first clock signal, so as to generate a quantized output signal. The first clock signal has a clock cycle. The sigma delta modulating loop has a first delay time that is the same as M times of the clock cycle. M is an integral multiple of 0.5 and is larger than 1. The adjusting loops delay the quantized output signal for second delay times, respectively, so as to generate the adjustment signal.
    Type: Application
    Filed: August 31, 2017
    Publication date: June 7, 2018
    Inventor: Xiao-Bo ZHOU
  • Patent number: 8256968
    Abstract: The invention concerns a wheel hub bearing unit for a vehicle, said hub bearing unit comprising a rotating bearing ring member (1) and a non-rotating bearing ring member (2), where the rotating bearing ring (1) has at least a radially extending wheel mounting flange (4) with a reference flange surface (5), wherein a gasket (9) with at least a sacrificial metal gasket surface is provided on the flange surface (5). Hereby, corrosion protection of the surface of the wheel mounting flange of a hub bearing unit is realized in a cost-effective manner.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: September 4, 2012
    Assignee: Aktiebolaget SKF
    Inventors: Hendrikus Jan Kapaan, Xiao Bo Zhou
  • Publication number: 20100296760
    Abstract: The invention concerns a wheel hub bearing unit for a vehicle, said hub bearing unit comprising a rotating bearing ring member (1) and a non-rotating bearing ring member (2), where the rotating bearing ring (1) has at least a radially extending wheel mounting flange (4) with a reference flange surface (5), wherein a gasket (9) with at least a sacrificial metal gasket surface is provided on the flange surface (5). Hereby, corrosion protection of the surface of the wheel mounting flange of a hub bearing unit is realized in a cost-effective manner.
    Type: Application
    Filed: May 31, 2007
    Publication date: November 25, 2010
    Inventors: Hendrikus Jan Kapaan, Xiao Bo Zhou
  • Publication number: 20100195946
    Abstract: The invention concerns a bearing assembly comprising an inner ring, an outer ring and rolling elements, the inner ring and outer ring being rotatably coupled by means of the rolling elements. The rolling elements are disposed on opposing raceways within a bearing cavity and are retained in a cage. The bearing is provided with a lubricant and further comprises at least one sealing element, mounted in an annular gap between the inner and outer ring. To prevent the lubricant adhering to predetermined surfaces within the bearing cavity which do not require lubrication, at least one of these predetermined surfaces is provided with an oleophobic coating. One advantage of the invention is that the lubricant ages less quickly, leading to improved bearing service life.
    Type: Application
    Filed: July 28, 2008
    Publication date: August 5, 2010
    Inventors: Xiao Bo Zhou, Armel Louis Doyer, Frank Berens
  • Patent number: 7018107
    Abstract: Rolling bearing comprising an inner ring, rolling elements and an outer ring. According to one aspect of the invention the inner ring is produced by M62 steel powder metallurgical technique whilst the outer ring is a conventional stool ring. According to another aspect a rolling bearing having at least one component produced by powder metallurgy technique is in a actively lubricated condition.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: March 28, 2006
    Assignee: AB SKF
    Inventors: John Michael Beswick, Xiao Bo Zhou
  • Publication number: 20040071378
    Abstract: Rolling bearing comprising an inner ring, rolling elements and an outer ring. According to one aspect of the invention the inner ring is produced by M62 steel powder metallurgical technique whilst the outer ring is a conventional stool ring. According to another aspect a rolling bearing having at least one component produced by powder metallurgy technique is in a actively lubricated condition.
    Type: Application
    Filed: July 28, 2003
    Publication date: April 15, 2004
    Inventors: John Michael Beswick, Xiao Bo Zhou
  • Patent number: 6340400
    Abstract: A stainless steel component comprising 0.8-1.4% carbon, 18-26 wt % chromium, 2-4 wt % nickel, 0-1 wt % molybdenum, 0 wt % lead and less than 0.6 wt % silicon provides for beneficial properties. Such a component may be prepared by the provision of an article from a steel starting material, and austenitizing the article between 800° C. and 1050° C. followed by hardening. In this process, the steel starting material comprises a powder.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: January 22, 2002
    Assignee: SKF Engineering & Research Centre B.V.
    Inventor: Xiao Bo Zhou