Method and apparatus for securing computer video and audio subsystems

摘要

In general, embodiments of the invention include methods and apparatuses for securing otherwise unsecured computer audio and video subsystems. Embodiments of the invention perform watermarking of video and/or audio data streams output by a computer system. Additional security features that are included in embodiments of the invention include fingerprinting, snooping, capturing streams for local or remote analytics or archiving, and mixing of secure system content with local audio and video content.

主权项

1. A computing device comprising:
a host processor subsystem including a CPU and an audio and video subsystem for producing audio and video outputs for playback and display on associated audio and video output devices, wherein the audio and video outputs include 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 audio and video subsystem that receives the audio and video outputs from the host processor subsystem and controls an actual playback and display of the audio and video outputs on the associated audio and video output devices, wherein the control includes passing the first stream from the host processor to one or both of the audio and video output devices unchanged, and performing processing on the content of the second stream before passing the second stream to one or both of the audio and video output devices; and wherein the audio and video outputs further include one or both of audio and video data produced by associated audio and video input devices, respectively, and wherein the associated audio and video input devices include one or more of a microphone, a still camera, a video camera, and an audio Line- In, and wherein the secure audio and video subsystem performs analytics on one or more of the audio and video outputs from the host processing subsystem, and wherein the analytics comprise a biometric authentication application, and wherein the secure audio and video subsystem performs video overlay of one or more video streams not produced by the host processor subsystem in the actual display and playback.