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Protecting content displayed on a mobile device

  • US 9,703,990 B2
  • Filed: 07/20/2016
  • Issued: 07/11/2017
  • Est. Priority Date: 01/19/2015
  • Status: Active Grant
First Claim
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1. A system for protecting content comprising:

  • a mobile device screen including a plurality of pixels, each of the plurality of pixels having both first sub-pixel units that include a first viewing angle and second sub-pixel units, wherein within each of the plurality of pixels the first sub-pixel units are adjacent to the second sub-pixel units;

    one or more collimating lenses coupled to each of the second sub-pixel units, the collimating lenses collimating a diverging light output from the respective second sub-pixel units, the collimated diverging light output having a second viewing angle;

    a processor coupled to the mobile device screen, the processor determining at least a portion of the mobile device screen that displays sensitive content, the processor obscuring the sensitive content displayed on the at least a portion of the mobile device screen by deactivating the first sub-pixel units including the first viewing angle at the portion of the mobile device screen that displays the sensitive content and displaying only the diverging light output having the second viewing angle at the portion of the mobile device screen that displays the sensitive content;

    further comprising an infrared (IR) light emitter embedded in the mobile device screen, wherein the IR light emitter is activated and deactivated by the processor; and

    a first camera device or set of camera devices coupled to the processor, wherein based on the first camera device or set of camera devices detecting a second camera device or set of camera devices, the IR light emitter generates an infrared signal that saturates an image sensor of the second camera device or set of camera devices.

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