Patents by Inventor Chih-Wei Yeh

Chih-Wei Yeh 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: 20220178753
    Abstract: Systems, apparatuses, and methods for multi-application optical sensing are provided. For example, an optical sensing apparatus can include a photodetector array, a first circuitry, and a second circuitry. The photodetector array includes a plurality of photodetectors, wherein a first subset of the plurality of photodetectors are configured as a first region for detecting a first optical signal, and a second subset of the plurality of photodetectors are configured as a second region for detecting a second optical signal. The first circuitry, coupled to the first region, is configured to perform a first function based on the first optical signal to output a first output result. The second circuitry, coupled to the second region, is configured to perform a second function based on the second optical signal to output a second output result.
    Type: Application
    Filed: September 9, 2021
    Publication date: June 9, 2022
    Inventors: Chih-Wei Yeh, Hung-Chih Chang, Yun-Chung Na, Tsung-Ting Wu, Shu-Lu Chen
  • Publication number: 20220136817
    Abstract: Systems, apparatuses, and methods for improved reconfigurable optical sensing are provided. For instance, an example optical sensing apparatus can include a photodetector array including a plurality of photodetectors. The optical sensing apparatus can include circuitry or one or more processing devices configured to receive one or more electrical signals representing an optical signal received by a first subset of the plurality of photodetectors; determine, based on the one or more electrical signals, a region of interest in the photodetector array for optical measurements; and deactivate, based on the region of interest, a second subset of the plurality of photodetectors of the photodetector array.
    Type: Application
    Filed: September 9, 2021
    Publication date: May 5, 2022
    Inventors: Chih-Wei Yeh, Yun-Chung Na, Tsung-Ting Wu, Shu-Lu Chen
  • Publication number: 20220114303
    Abstract: A hardware-in-the-loop (HIL) simulation device is provided, which includes a processing circuit and a pulse-width modulation (PWM) signal observation circuit. The PWM signal observation circuit includes an energy storage unit and the energy storage unit is coupled to the processing circuit. A signal source transmits a PWM signal to the processing circuit and the PWM signal observation circuit, and the energy storage unit is charged when the PWM signal is at high level. The processing circuit detects the voltage of the energy storage unit when detecting the falling edge of the PWM signal so as to calculate the duty cycle of the PWM signal.
    Type: Application
    Filed: December 24, 2020
    Publication date: April 14, 2022
    Inventors: CHUN-AN LIN, WEN-CHE SHEN, CHIH-WEI YEH, PO-HUAN CHOU, CHUN-CHIEH CHANG, YU-HSUN WU
  • Patent number: 11282449
    Abstract: Systems, methods, and devices for adjusting image display on an electronic display by predicting a temperature change of the electronic display due to heat-producing components near the display or due to changes in content. An electronic device may include an electronic display and processing circuitry. The electronic display may include pixels with behaviors that vary with temperature. As such, the processing circuitry may generate image data to send to the electronic display and adjust the image data or vary an operation of the electronic display based at least in part on a predicted temperature effect on at least part of the active area of the electronic display. The processing circuitry may determine the predicted temperature effect at least in part due to a first heat producing component or changes in content of the image data.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Sun Il Chang, Hung Sheng Lin, Hyunwoo Nho, Jie Won Ryu, Junhua Tan, Chih-Wei Yeh, Chaohao Wang, Paolo Sacchetto
  • Publication number: 20210391370
    Abstract: A photo-detecting apparatus is provided. The photo-detecting apparatus includes a carrier conducting layer having a first surface; an absorption region is doped with a first dopant having a first conductivity type and a first peak doping concentration, wherein the carrier conducting layer is doped with a second dopant having a second conductivity type and a second peak doping concentration, wherein the carrier conducting layer comprises a material different from a material of the absorption region, wherein the carrier conducting layer is in contact with the absorption region to form at least one heterointerface, wherein a ratio between the first peak doping concentration of the absorption region and the second peak doping concentration of the carrier conducting layer is equal to or greater than 10; and a first electrode and a second electrode both formed over the first surface of the carrier conducting layer.
    Type: Application
    Filed: August 27, 2021
    Publication date: December 16, 2021
    Inventors: Yen-Cheng Lu, Yun-Chung Na, Tsung-Ting Wu, Shu-Lu Chen, Chih-Wei Yeh
  • Patent number: 11158259
    Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: October 26, 2021
    Assignee: Apple Inc.
    Inventors: Chaohao Wang, Chih-Wei Yeh, Chin-Wei Lin, Hung Sheng Lin, Hyunwoo Nho, Injae Hwang, Jie Won Ryu, Junhua Tan, Paolo Sacchetto, Rui Zhang, Shengkui Gao, Sun-Il Chang, Wei H. Yao, Howard H. Tang
  • Publication number: 20210049962
    Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.
    Type: Application
    Filed: November 3, 2020
    Publication date: February 18, 2021
    Inventors: Chaohao Wang, Chih-Wei Yeh, Chin-Wei Lin, Hung Sheng Lin, Hyunwoo Nho, Injae Hwang, Jie Won Ryu, Junhua Tan, Paolo Sacchetto, Rui Zhang, Shengkui Gao, Sun-Il Chang, Wei H. Yao, Howard H. Tang
  • Publication number: 20210021172
    Abstract: A kinetic energy recovery system with flywheel includes a cascade flywheel doubly-fed electric machine. The cascade flywheel doubly-fed electric machine has a stator end coil, a rotor end coil and a flywheel. The flywheel can store kinetic energy by increasing speed or releasing kinetic energy by decreasing speed. A control circuit has an inverter, a rectifier and a DC bus connecting the inverter and the rectifier. The inverter is used to supply alternating current to the rotor end coil. The rectifier has an AC end connected to the stator end coil through an AC bus. The rectifier converts alternating current to direct current, so that the inverter can draw power from the DC bus. An electric motor has a phase coil connected to the AC bus. When the cascaded flywheel double-fed electric machine decelerates, the kinetic energy recovery system with flywheel will convert mechanical energy into electrical energy.
    Type: Application
    Filed: July 13, 2020
    Publication date: January 21, 2021
    Inventors: Ming-Tsan Peng, Chia-Lin Wu, Huan-Lung Gu, Chih-Wei Yeh
  • Patent number: 10885852
    Abstract: An electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a set of degradation ratios and gamma tap points for each brightness setting of the display based at least in part on a reconstructed current-voltage curve.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: January 5, 2021
    Assignee: Apple Inc.
    Inventors: Sheng Zhang, Chih-Wei Yeh, Yunhui Hou, Chaohao Wang, Wei H. Yao, Paolo Sacchetto, Derek K. Shaeffer, Henry C. Jen, Shingo Hatanaka, Hasan Akyol, Mahdi Farrokh Baroughi, Hopil Bae
  • Patent number: 10825385
    Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: November 3, 2020
    Assignee: Apple Inc.
    Inventors: Chaohao Wang, Chih-Wei Yeh, Chin-Wei Lin, Hung Sheng Lin, Hyunwoo Nho, Injae Hwang, Jie Won Ryu, Junhua Tan, Paolo Sacchetto, Rui Zhang, Shengkui Gao, Sun-Il Chang, Wei H. Yao, Howard H. Tang
  • Publication number: 20200302871
    Abstract: An electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a set of degradation ratios and gamma tap points for each brightness setting of the display based at least in part on a reconstructed current-voltage curve.
    Type: Application
    Filed: June 4, 2020
    Publication date: September 24, 2020
    Inventors: Sheng Zhang, Chih-Wei Yeh, Yunhui Hou, Chaohao Wang, Wei H. Yao, Paolo Sacchetto, Derek K. Shaeffer, Henry C. Jen, Shingo Hatanaka, Hasan Akyol, Mahdi Farrokh Baroughi, Hopil Bae
  • Patent number: 10714011
    Abstract: A mobile electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The mobile electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a current-voltage relationship of the pixel and a reference current-voltage relationship of the reference pixel.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: July 14, 2020
    Assignee: Apple Inc.
    Inventors: Sheng Zhang, Chih-Wei Yeh, Yunhui Hou, Chaohao Wang, Wei H. Yao, Paolo Sacchetto, Derek K. Shaeffer, Henry C. Jen, Shingo Hatanaka, Hasan Akyol, Mahdi Farrokh Baroughi, Hopil Bae
  • Patent number: 10248257
    Abstract: Devices and methods for improving image quality and decreasing power consumption of an electronic display are provided. The electronic device includes a display panel including a plurality of pixels configured to display an image, and to operate at multiple refresh rates. The electronic device also includes a processor configured to instruct the display panel to transition between the multiple refresh rates based at least in part on a blur effective width of the image.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: April 2, 2019
    Assignee: Apple Inc.
    Inventors: Chih-Wei Yeh, Chaohao Wang, Paolo Sacchetto, Wei Chen
  • Publication number: 20190088204
    Abstract: A mobile electronic device includes a display having an active array and a reference array. The active array includes a pixel and the reference array includes a reference pixel. The mobile electronic device also includes processing circuitry communicatively coupled to the display. The processing circuitry is configured to instruct the active array to drive the pixel based at least in part on a current-voltage relationship of the pixel and a reference current-voltage relationship of the reference pixel.
    Type: Application
    Filed: September 14, 2018
    Publication date: March 21, 2019
    Inventors: Sheng Zhang, Chih-Wei Yeh, Yunhui Hou, Chaohao Wang, Wei H. Yao, Paolo Sacchetto, Derek K. Shaeffer, Henry C. Jen, Shingo Hatanaka, Hasan Akyol, Mahdi Farrokh Baroughi, Hopil Bae
  • Patent number: 10209551
    Abstract: Devices, storage media, and methods for compensating for aging and temperature variations using dual-loop compensation are provided. The compensating for temperature and aging variations of one or more pixels of the display using a coarse scan loop updated at a faster rate. Compensation also includes compensating for aging variations of the one or more pixels of the display using a fine scan loop updated at a slower rate.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: February 19, 2019
    Assignee: APPLE INC.
    Inventors: Hung Sheng Lin, Jesse A. Richmond, Mohammad B. Vahid Far, Tobias Jung, Jie Won Ryu, Hyunwoo Nho, Kingsuk Brahma, Sun-Il Chang, Junhua Tan, Marc Albrecht, Chih-Wei Yeh, Chaohao Wang
  • Publication number: 20190034026
    Abstract: Devices and methods for improving image quality and decreasing power consumption of an electronic display are provided. The electronic device includes a display panel including a plurality of pixels configured to display an image, and to operate at multiple refresh rates. The electronic device also includes a processor configured to instruct the display panel to transition between the multiple refresh rates based at least in part on a blur effective width of the image.
    Type: Application
    Filed: September 24, 2018
    Publication date: January 31, 2019
    Inventors: Chih-Wei Yeh, Chaohao Wang, Paolo Sacchetto, Wei Chen
  • Patent number: 10133403
    Abstract: Devices and methods for improving image quality and decreasing power consumption of an electronic display are provided. The electronic device includes a display panel including a plurality of pixels configured to display an image, and to operate at multiple refresh rates. The electronic device also includes a processor configured to instruct the display panel to transition between the multiple refresh rates based at least in part on a blur effective width of the image.
    Type: Grant
    Filed: September 24, 2016
    Date of Patent: November 20, 2018
    Assignee: APPLE INC.
    Inventors: Chih-Wei Yeh, Chaohao Wang, Paolo Sacchetto, Wei Chen
  • Publication number: 20180082631
    Abstract: Systems, methods, and devices for adjusting image display on an electronic display by predicting a temperature change of the electronic display due to heat-producing components near the display or due to changes in content. An electronic device may include an electronic display and processing circuitry. The electronic display may include pixels with behaviors that vary with temperature. As such, the processing circuitry may generate image data to send to the electronic display and adjust the image data or vary an operation of the electronic display based at least in part on a predicted temperature effect on at least part of the active area of the electronic display. The processing circuitry may determine the predicted temperature effect at least in part due to a first heat producing component or changes in content of the image data.
    Type: Application
    Filed: August 10, 2017
    Publication date: March 22, 2018
    Inventors: Sun Il Chang, Hung Sheng Lin, Hyunwoo Nho, Jie Won Ryu, Junhua Tan, Chih-Wei Yeh, Chaohao Wang, Paolo Sacchetto
  • Publication number: 20180081234
    Abstract: Devices, storage media, and methods for compensating for aging and temperature variations using dual-loop compensation are provided. The compensating for temperature and aging variations of one or more pixels of the display using a coarse scan loop updated at a faster rate. Compensation also includes compensating for aging variations of the one or more pixels of the display using a fine scan loop updated at a slower rate.
    Type: Application
    Filed: August 15, 2017
    Publication date: March 22, 2018
    Inventors: Hung Sheng Lin, Jesse A. Richmond, Mohammad B. Vahid Far, Tobias Jung, Jie Won Ryu, Hyunwoo Nho, Kingsuk Brahma, Sun-Il Chang, Junhua Tan, Marc Albrecht, Chih-Wei Yeh, Chaohao Wang
  • Publication number: 20180082634
    Abstract: An apparatus receives current image frame data and data relating to at least one previous image frame for an electronic display. One or more parameters related to hysteresis of transistors in the electronic display are sensed. A correlation device, such as a look-up table, receives the sensed parameter or parameters and the data relating to one or more image frames, and uses this information, at least in part, to output an appropriate compensation signal for the current image frame data. The compensated current image frame data may then be supplied to the electronic display to reduce or eliminate the effects of hysteresis on the displayed image.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 22, 2018
    Inventors: Chaohao Wang, Chih-Wei Yeh, Chin-Wei Lin, Hung Sheng Lin, Hyunwoo Nho, Injae Hwang, Jie Won Ryu, Junhua Tan, Paolo Sacchetto, Rui Zhang, Shengkui Gao, Sun-Il Chang, Wei H. Yao, Howard H. Tang