Patents by Inventor Wenpang David Wang

Wenpang David 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).

  • Operating a headset that includes microphone line and pushbutton keys
    Patent number: 10462564
    Abstract: An audio accessory key detection system (40) includes a host circuit (2-3) coupled to communicate via a microphone line (7) with an accessory circuit (3-3) in either a MSFT mode or a digital communication mode. Depletion mode transistors (44-1,2,3) in the accessory circuit are coupled between keys (15-1,2,3) of the accessory circuit, respectively. The depletion mode transistors are allowed to remain conductive for MSFT mode operation. For digital communications mode operation, the host circuit sends a command via the microphone line to a key detector and controller circuit (29A) in the accessory circuit. In response, a voltage is generated to turn the depletion mode transistors off so as to allow digital communications mode operation between the accessory circuit and the host circuit.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: October 29, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Ball Fan, Wenpang David Wang, Christopher Michael Graves
  • AUDIO ACCESSORY CIRCUITRY AND METHOD COMPATIBLE WITH BOTH MSFT MODE AND DIGITAL COMMUNICATION MODE
    Publication number: 20170019733
    Abstract: An audio accessory key detection system (40) includes a host circuit (2-3) coupled to communicate via a microphone line (7) with an accessory circuit (3-3) in either a MSFT mode or a digital communication mode. Depletion mode transistors (44-1,2,3) in the accessory circuit are coupled between keys (15-1,2,3) of the accessory circuit, respectively. The depletion mode transistors are allowed to remain conductive for MSFT mode operation. For digital communications mode operation, the host circuit sends a command via the microphone line to a key detector and controller circuit (29A) in the accessory circuit. In response, a voltage is generated to turn the depletion mode transistors off so as to allow digital communications mode operation between the accessory circuit and the host circuit.
    Type: Application
    Filed: September 27, 2016
    Publication date: January 19, 2017
    Inventors: Ball Fan, Wenpang David Wang, Christopher Michael Graves
  • Initial command to switch transistors disconnecting keys from microphone line
    Patent number: 9479882
    Abstract: An audio accessory key detection system (40) includes a host circuit (2-3) coupled to communicate via a microphone line (7) with an accessory circuit (3-3) in either a MSFT mode or a digital communication mode. Depletion mode transistors (44-1,2,3) in the accessory circuit are coupled between keys (15-1,2,3) of the accessory circuit, respectively. The depletion mode transistors are allowed to remain conductive for MSFT mode operation. For digital communications mode operation, the host circuit sends a command via the microphone line to a key detector and controller circuit (29A) in the accessory circuit. In response, a voltage is generated to turn the depletion mode transistors off so as to allow digital communications mode operation between the accessory circuit and the host circuit.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: October 25, 2016
    Assignee: Texas Instruments Incorporated
    Inventors: Ball Fan, Wenpang David Wang, Christopher Michael Graves
  • Audio Accessory Circuitry and Method Compatible With Both MSFT Mode and Digital Communication Mode
    Publication number: 20140254809
    Abstract: An audio accessory key detection system (40) includes a host circuit (2-3) coupled to communicate via a microphone line (7) with an accessory circuit (3-3) in either a MSFT mode or a digital communication mode. Depletion mode transistors (44-1,2,3) in the accessory circuit are coupled between keys (15-1,2,3) of the accessory circuit, respectively. The depletion mode transistors are allowed to remain conductive for MSFT mode operation. For digital communications mode operation, the host circuit sends a command via the microphone line to a key detector and controller circuit (29A) in the accessory circuit. In response, a voltage is generated to turn the depletion mode transistors off so as to allow digital communications mode operation between the accessory circuit and the host circuit.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: Texas Instruments Incorporated
    Inventors: Ball Fan, Wenpang David Wang, Christopher Michael Graves