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Method and apparatus for securing computer video and audio subsystems

  • US 10,489,657 B2
  • Filed: 12/31/2015
  • Issued: 11/26/2019
  • Est. Priority Date: 03/04/2013
  • Status: Active Grant
First Claim
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1. A computing device comprising:

  • a host processor subsystem including a CPU and a video subsystem for producing a video output for playback and display on an associated video output device, wherein the video output includes first and second different streams produced by an operating system and application software running on the CPU of the host processor subsystem; and

    a secure subsystem that receives the video output from the host processor subsystem and controls an actual playback and display of the video output on the associated video output device, wherein the control includes selectively passing the first stream from the host processor to the video output device unchanged, and performing processing on content of the second stream before passing the second stream to the video output device, andwherein the video output further includes video data produced by an associated video input device, andwherein the secure subsystem performs analytics on the video data produced by the associated video input device and output from the host processing subsystem, andwherein the analytics comprise a biometric authentication application that is adapted to determine whether a user of the computing device is authorized to use the computing device based on analysis of the video data, andwherein the secure subsystem is adapted to prevent use of the computing device by the user if the biometric authentication application determines that the user is not authorized to use the computing device, andwherein the secure subsystem is adapted to prevent use of the computing device by the unauthorized user by shutting down the computing device, andwherein the secure subsystem is adapted to shut down the computing device after the user determined by the biometric authentication application to be unauthorized has been present in the video data for a threshold amount of time.

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