Patents by Inventor Chao-Hsin Lu

Chao-Hsin Lu 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: 11934027
    Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: March 19, 2024
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Chang Hu, Chih-Wei Weng, Chia-Che Wu, Chien-Yu Kao, Hsiao-Hsin Hu, He-Ling Chang, Chao-Hsi Wang, Chen-Hsien Fan, Che-Wei Chang, Mao-Gen Jian, Sung-Mao Tsai, Wei-Jhe Shen, Yung-Ping Yang, Sin-Hong Lin, Tzu-Yu Chang, Sin-Jhong Song, Shang-Yu Hsu, Meng-Ting Lin, Shih-Wei Hung, Yu-Huai Liao, Mao-Kuo Hsu, Hsueh-Ju Lu, Ching-Chieh Huang, Chih-Wen Chiang, Yu-Chiao Lo, Ying-Jen Wang, Shu-Shan Chen, Che-Hsiang Chiu
  • 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: 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
  • Patent number: 9263993
    Abstract: A low pass filter includes a first amplifier stage and a second amplifier stage. The first amplifier stage includes a differential operational amplifier, wherein the first amplifier stage is arranged to process a differential input signal to generate a differential intermediate signal, the differential input signal having a first input signal and a second input signal, and the differential intermediate signal having a first intermediate signal and a second intermediate signal. The second amplifier stage has no common-mode feedback and is arranged to process the differential intermediate signal to generate a differential output signal, wherein the differential output signal has a first output signal corresponding to the first input signal and a second output signal corresponding to the second input signal. Since the noisy common-mode feedback is removed from the second amplifier stage, the overall common-mode noise of the low pass filter can be decreased.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: February 16, 2016
    Assignee: MEDIATEK INC.
    Inventors: Tzu-Hsuin Peng, Chih-Hong Lou, Chao-Hsin Lu, Chi-Yun Wang, Chih-Jung Chen
  • Patent number: 9172410
    Abstract: A transmitter includes a first wireless communication module, a second wireless communication module, a multiplexer, a digital-to-analog converter and a filter. The multiplexer selectively outputs a first digital signal derived from a digital output of the first wireless communication module or a second digital signal derived from a digital output of the second wireless communication module as a selected output. The digital-to-analog converter converts the selected output into an analog signal. The filter processes the analog signal and includes an adjustable resistive element. When the multiplexer selects the first digital signal as the selected output, the adjustable resistive element is adjusted to have a first resistance value such that the filter has a first bandwidth. When the multiplexer selects the second digital signal as the selected output, the adjustable resistive element is adjusted to have a second resistance value such that the filter has a second bandwidth.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: October 27, 2015
    Assignee: MEDIATEK INC.
    Inventors: Chao-Hsin Lu, Chih-Jung Chen
  • Publication number: 20150303880
    Abstract: A low pass filter includes a first amplifier stage and a second amplifier stage. The first amplifier stage includes a differential operational amplifier, wherein the first amplifier stage is arranged to process a differential input signal to generate a differential intermediate signal, the differential input signal having a first input signal and a second input signal, and the differential intermediate signal having a first intermediate signal and a second intermediate signal. The second amplifier stage has no common-mode feedback and is arranged to process the differential intermediate signal to generate a differential output signal, wherein the differential output signal has a first output signal corresponding to the first input signal and a second output signal corresponding to the second input signal. Since the noisy common-mode feedback is removed from the second amplifier stage, the overall common-mode noise of the low pass filter can be decreased.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 22, 2015
    Applicant: MEDIATEK INC.
    Inventors: Tzu-Hsuin Peng, Chih-Hong Lou, Chao-Hsin Lu, Chi-Yun Wang, Chih-Jung Chen
  • Publication number: 20150200693
    Abstract: A transmitter includes a first wireless communication module, a second wireless communication module, a multiplexer, a digital-to-analog converter and a filter. The multiplexer selectively outputs a first digital signal derived from a digital output of the first wireless communication module or a second digital signal derived from a digital output of the second wireless communication module as a selected output. The digital-to-analog converter converts the selected output into an analog signal. The filter processes the analog signal and includes an adjustable resistive element. When the multiplexer selects the first digital signal as the selected output, the adjustable resistive element is adjusted to have a first resistance value such that the filter has a first bandwidth. When the multiplexer selects the second digital signal as the selected output, the adjustable resistive element is adjusted to have a second resistance value such that the filter has a second bandwidth.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 16, 2015
    Applicant: MEDIATEK INC.
    Inventors: Chao-Hsin Lu, Chih-Jung Chen
  • Patent number: 8669896
    Abstract: A method of controlling a successive-comparing-register analog-to-digital convertor (SAR ADC) is provided. Based upon the method, the SAR ADC receives a conversion clock that controls a conversion rate of the SAR ADC.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 11, 2014
    Assignee: Mediatek Inc.
    Inventors: Jen-Che Tsai, Chao-Hsin Lu
  • Patent number: 8549212
    Abstract: The invention provides a flash storage device. In one embodiment, the flash storage device comprises a flash memory and a controller. The flash memory comprises a plurality of blocks, wherein each of the plurality of blocks comprises a plurality of pages for storing data, and each of the plurality of pages has a physical address. The controller divides a plurality of logical addresses into a plurality of logical address ranges, records a plurality of partial link tables respectively storing a mapping relationship between logical addresses of a corresponding logical address range and corresponding physical addresses, stores the partial link tables in the flash memory, combines the partial link tables to obtain a link table, and converts logical addresses sent by a host to physical addresses according to the link table.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: October 1, 2013
    Assignee: Silicon Motion, Inc.
    Inventor: Chao-Hsin Lu
  • Publication number: 20130099953
    Abstract: A method of controlling a successive-comparing-register analog-to-digital convertor (SAR ADC) is provided. Based upon the method, the SAR ADC receives a conversion clock that controls a conversion rate of the SAR ADC.
    Type: Application
    Filed: June 11, 2012
    Publication date: April 25, 2013
    Inventors: Jen-Che Tsai, Chao-Hsin Lu
  • Patent number: 8290065
    Abstract: The invention discloses an image processing system comprising a video source system, a transmission medium, and a television system. The image processing systems of the video source system and the television system are equipped with an additional digital-to-analog converter and an additional analog-to-digital converter.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: October 16, 2012
    Assignee: Realtek Semiconductor Corp.
    Inventors: Jui-Yuan Tsai, Chao-Hsin Lu
  • Patent number: 7995979
    Abstract: A wireless receiver with automatic gain control and a method for automatic gain control of a receiving circuit utilized in a wireless receiver are provided. The receiving circuit includes a programmable gain amplifier and a low noise amplifier, and the method includes: comparing a gain code of the programmable gain amplifier with a predetermined code range, wherein the gain code is determined by a frequency signal received through the low noise amplifier; and adjusting a gain of the low noise amplifier when the gain code is out of the predetermined code range.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: August 9, 2011
    Assignee: Mediatek Inc.
    Inventors: Chao-Hsin Lu, Chang-Fu Kuo
  • Patent number: 7933360
    Abstract: A method to assess signal transmission quality and the adjust method thereof are proposed. First, different time points of a control signal at a receiving end are acquired and the number of signal transitions in a predetermined time interval is counted. Next, the number of signal transitions is recorded and compared to a reference value to obtain a comparison result. The quality of the control signal is then determined based on the comparison result. The parameter setting of the receiving end is adjusted according to the quality of the control signal received by the receiving end to get a better performance setting.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: April 26, 2011
    Assignee: Realtek Semiconductor Corp.
    Inventors: Yu-Pin Chou, Chao-Hsin Lu, Hsu-Jung Tung
  • Patent number: 7903046
    Abstract: A transmitter includes an output module coupled to an output port for outputting an output signal to the output port according to a detection signal, and a detect module for detecting the output port to generate the detect signal.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: March 8, 2011
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chao-Hsin Lu