Patents by Inventor Dahai Stephen Kou

Dahai Stephen Kou 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).

  • Technologies for framework-level audio device virtualization
    Patent number: 10776072
    Abstract: Technologies for framework-level audio device virtualization include a computing device that executes multiple application framework instances. The computing device monitors for an application framework instance switch and, in response to an application framework instance switch, determines whether the current application framework instance is in the foreground. If in the foreground, the computing device selects a physical audio output device. The computing device may output audio data associated with the current application framework instance using a kernel audio driver associated with the physical audio output device. If not in the foreground, the computing device selects a null audio output device using a null audio hardware abstraction layer (HAL). The null audio HAL may sleep for the duration of audio data associated with the current application framework instance. The null audio HAL may be an operating-system- and device-independent shared library of the computing device.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: September 15, 2020
    Assignee: Intel Corporation
    Inventors: Shoumeng Yan, Yuan Wu, Dahai Stephen Kou
  • TECHNOLOGIES FOR FRAMEWORK-LEVEL AUDIO DEVICE VIRTUALIZATION
    Publication number: 20170286048
    Abstract: Technologies for framework-level audio device virtualization include a computing device that executes multiple application framework instances. The computing device monitors for an application framework instance switch and, in response to an application framework instance switch, determines whether the current application framework instance is in the foreground. If in the foreground, the computing device selects a physical audio output device. The computing device may output audio data associated with the current application framework instance using a kernel audio driver associated with the physical audio output device. If not in the foreground, the computing device selects a null audio output device using a null audio hardware abstraction layer (HAL). The null audio HAL may sleep for the duration of audio data associated with the current application framework instance. The null audio HAL may be an operating-system- and device-independent shared library of the computing device.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 5, 2017
    Inventors: Shoumeng Yan, Yuan Wu, Dahai Stephen Kou