Patents by Inventor Chih-Ming Yuan

Chih-Ming Yuan 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: 11126815
    Abstract: The disclosure provides a fingerprint sensor and a fingerprint sensing method thereof. The fingerprint sensor includes an optical sensing array, an analog front end circuit and an image processing circuit. The optical sensing array is configured for sequentially outputting a plurality of analog fingerprint images corresponding to a finger. The analog front end circuit is coupled to the optical sensing array. The analog front end circuit is configured for sequentially receiving and converting the plurality of analog fingerprint images into a plurality of first digital fingerprint images. The image processing circuit is coupled to the analog front end circuit. The image processing circuit is configured for sequentially superimposing the plurality of first digital fingerprint images to generate an enhanced fingerprint image.
    Type: Grant
    Filed: September 28, 2019
    Date of Patent: September 21, 2021
    Assignee: Egis Technology Inc.
    Inventors: Yung-Fu Chen, Chih-Hsien Weng, Chih-Ming Yuan
  • Publication number: 20200175240
    Abstract: The disclosure provides a fingerprint sensor and a fingerprint sensing method thereof. The fingerprint sensor includes an optical sensing array, an analog front end circuit and an image processing circuit. The optical sensing array is configured for sequentially outputting a plurality of analog fingerprint images corresponding to a finger. The analog front end circuit is coupled to the optical sensing array. The analog front end circuit is configured for sequentially receiving and converting the plurality of analog fingerprint images into a plurality of first digital fingerprint images. The image processing circuit is coupled to the analog front end circuit. The image processing circuit is configured for sequentially superimposing the plurality of first digital fingerprint images to generate an enhanced fingerprint image.
    Type: Application
    Filed: September 28, 2019
    Publication date: June 4, 2020
    Applicant: Egis Technology Inc.
    Inventors: Yung-Fu Chen, Chih-Hsien Weng, Chih-Ming Yuan
  • Patent number: 9063597
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 23, 2015
    Assignee: INTEGRATED DIGITAL TECHNOLOLGIES, INC.
    Inventors: Shen-Tai Liaw, Nae-jye Hwang, Feng-Sheng Lin, Chih-Ming Yuan
  • Patent number: 8917262
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: December 23, 2014
    Assignee: Integrated Digital Technologies, Inc.
    Inventors: Shen-Tai Liaw, Nae-Jye Hwang, Feng-Sheng Lin, Chih-Ming Yuan
  • Patent number: 8816993
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: August 26, 2014
    Assignee: Integrated Digital Technologies, Inc.
    Inventors: Chih-Ming Yuan, Shen-Tai Liaw, Nae-Jye Hwang
  • Patent number: 8780089
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: July 15, 2014
    Assignee: Integrated Digital Technologies, Inc.
    Inventors: Chih-Ming Yuan, Shen-Tai Liaw, Nae-Jye Hwang
  • Patent number: 8727557
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: May 20, 2014
    Assignee: Integrated Digital Technologies, Inc.
    Inventors: Chih-Ming Yuan, Shen-Tai Liaw, Nae-Jye Hwang
  • Patent number: 8648839
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: February 11, 2014
    Assignee: Integrated Digital Technologies, Inc.
    Inventors: Shen-Tai Liaw, Nae-jye Hwang, Feng-Sheng Lin, Chih-Ming Yuan
  • Publication number: 20130188336
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Application
    Filed: October 8, 2012
    Publication date: July 25, 2013
    Applicant: INTEGRATED DIGITAL TECHNOLGIES, INC.
    Inventors: Chih-Ming YUAN, Shen-Tai Liaw, Nae-Jye Hwang
  • Publication number: 20130027350
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Application
    Filed: October 8, 2012
    Publication date: January 31, 2013
    Applicant: INTEGRATED DIGITAL TECHNOLOGIES, INC.
    Inventors: Shen-Tai Liaw, Nae-jye Hwang, Feng-Sheng Lin, Chih-Ming YUAN
  • Publication number: 20130027358
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Application
    Filed: October 8, 2012
    Publication date: January 31, 2013
    Applicant: INTEGRATED DIGITAL TECHNOLOGIES, INC.
    Inventors: Shen-Tai Liaw, Nae-jye Hwang, Feng-Sheng Lin, Chih-Ming YUAN
  • Patent number: 8344313
    Abstract: A touch system including a touch panel and a readout circuit is disclosed. The touch panel is integrated with a plurality of photosensitive elements within pixel elements, and capable of displaying at least touch position by at least an optical inputting. The touch panel provides a signal data when the touch panel is touched. The readout circuit is configured to receive the signal data and includes a transformation unit and a processing unit. The transformation unit generates a signal value based on the signal data and a transformation parameter. The processing unit executes a specific action when the signal value is less than a preset value.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: January 1, 2013
    Assignee: Integrated Digital Technologies, Inc.
    Inventors: Chih-Ming Yuan, Shen-Tai Liaw, Naejye Hwang, Sen-Shyong Fann
  • Publication number: 20120268425
    Abstract: A sensing apparatus includes a sensing cell and a processing circuit. The sensing cell is disposed inside a display panel, and includes a first type sensing device and a second type sensing device. The first type sensing device is arranged to generate a first type sensing signal when the sensing cell receives an input event. The second type sensing device is adjacent to the first type sensing device, and arranged to generate a second type sensing signal when the sensing cell receives the input event, wherein a sensing ability of the first type sensing device to detect the input event is different from a sensing ability of the second type sensing device to detect the input event. The processing circuit is arranged to output a sensing output signal corresponding to the sensing cell according to a difference between the first type sensing signal and the second type sensing signal.
    Type: Application
    Filed: April 15, 2012
    Publication date: October 25, 2012
    Inventors: Naejye Hwang, Shen-Tai Liaw, Chen-Hsien Han, Chih-Ming Yuan
  • Publication number: 20120162126
    Abstract: A touch-sensing display device including a touch-sensing panel and a touch-sensing light source therearound is provided. The touch-sensing panel has a display surface and includes a pixel array including pixel structures and a display medium disposed on the pixel array. One pixel structure includes a scan line, a data line intersected with the scan line, an active element electrically connected to the scan line and the data line, a pixel electrode electrically connected to the active element, a capacitor electrode line electrically coupled with the pixel electrode, a readout line parallel to the data line, and a sensing element electrically connected to the scan line and the readout line and having a sensing surface facing the display surface. The touch-sensing light source provides a touch-sensing light to form a uniformed light field at the display surface. And at least one filter layer is provided above the sensing element.
    Type: Application
    Filed: November 22, 2011
    Publication date: June 28, 2012
    Inventors: Chih-Ming Yuan, Shen-Tai Liaw, Nae-Jye Hwang
  • Publication number: 20110169775
    Abstract: A touch input system including a stylus and a display device is provided. The stylus includes a battery module, a touch portion, a transducer module and a RF transmitting module. When a contact pressure is acted on the touch portion, the touch portion is electrically connected to the battery module by the contact pressure and emits a light signal. The display region receives and reacts to the light signal, and the contact pressure is transformed into an electrical signal by the transducer module. The RF transmitting module is electrically connected to the transducer module and transmitting the electrical signal. The display device includes a display region and a RF receiving module.
    Type: Application
    Filed: January 5, 2011
    Publication date: July 14, 2011
    Inventors: Shen-Tai Liaw, Nae-Jye Hwang, Feng-Sheng Lin, Chih-Ming Yuan
  • Publication number: 20110018834
    Abstract: A touch system including a touch panel and a readout circuit is disclosed. The touch panel is integrated with a plurality of photosensitive elements within pixel elements, and capable of displaying at least touch position by at least an optical inputting. The touch panel provides a signal data when the touch panel is touched. The readout circuit is configured to receive the signal data and includes a transformation unit and a processing unit. The transformation unit generates a signal value based on the signal data and a transformation parameter. The processing unit executes a specific action when the signal value is less than a preset value.
    Type: Application
    Filed: October 6, 2010
    Publication date: January 27, 2011
    Applicant: INTEGRATED DIGITAL TECHNOLOGIES, INC.
    Inventors: Chih-Ming Yuan, Shen-Tai Liaw, Naejye Hwang, Sen-Shyong Fann