Patents by Inventor Ing-Yih James Wang

Ing-Yih James Wang 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).

  • 5-wire resistive touch screen pressure measurement circuit and method
    Patent number: 9959005
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: May 1, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-WIRE RESISTIVE TOUCH SCREEN PRESSURE MEASUREMENT CIRCUIT AND METHOD
    Publication number: 20170255302
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Application
    Filed: May 22, 2017
    Publication date: September 7, 2017
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-wire resistive touch screen pressure measurement circuit and method
    Patent number: 9658730
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: May 23, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-WIRE RESISTIVE TOUCH SCREEN PRESSURE MEASUREMENT CIRCUIT AND METHOD
    Publication number: 20150363028
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Application
    Filed: August 24, 2015
    Publication date: December 17, 2015
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-wire resistive touch screen pressure measurement circuit and method
    Patent number: 9116590
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: August 25, 2015
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-WIRE RESISTIVE TOUCH SCREEN PRESSURE MEASUREMENT CIRCUIT AND METHOD
    Publication number: 20130044079
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 21, 2013
    Applicant: Texas Instruments Incorporated
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-wire resistive touch screen pressure measurement circuit and method
    Patent number: 8269745
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: September 18, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Wendy X. Fang, Ing-Yih James Wang
  • 5-Wire resistive touch screen pressure measurement circuit and method
    Publication number: 20110169745
    Abstract: A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 14, 2011
    Inventors: Wendy X. Fang, Ing-Yih James Wang