Protecting content displayed on a mobile device

Patent metadata

Field	Value
Publication number	US-2016358014-A1
Application number	US-201615214598-A
Country	US
Kind code	A1
Filing date	Jul 20, 2016
Priority date	Jan 19, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A method of protecting content displayed on a mobile device screen is provided. The mobile device screen may receive both sensitive and non-sensitive content. An image of one or more authorized users viewing the mobile device screen is detected, whereby, based on the detected image of the one or more authorized users, the received content is generated on the mobile device screen using a plurality of pixels. The plurality of pixels have both first sub-pixel units that include a first viewing angle and second sub-pixel units that include a second viewing angle. The first sub-pixel units generate an image of the non-sensitive content on the mobile device screen at the first viewing angle and the second sub-pixel units generate an image of the sensitive content at the second viewing angle, such that, the second viewing angle is smaller relative to the first viewing angle for obscuring the sensitive content.

First claim

What is claimed is:

1 . A method of protecting content displayed on a mobile device screen, the method comprising:
receiving content to be displayed on the mobile device screen, wherein the received content contains sensitive content and non-sensitive content; detecting an image of one or more authorized users viewing the mobile device screen; and generating, based on the detected image of the one or more authorized users, an image of the received content on the mobile device screen using a plurality of pixels, the plurality of pixels each having both first sub-pixel units that include a first viewing angle and second sub-pixel units that include a second viewing angle, the first sub-pixel units generating an image of the non-sensitive content on the mobile device screen at the first viewing angle and the second sub-pixel units generating an image of the sensitive content on the mobile device screen at the second viewing angle, wherein the second viewing angle has a smaller viewing angle relative to the first viewing angle for obscuring the sensitive content.

2 . The method of claim 1 , further comprising:
detecting an image of an external camera device used to capture the image of the received content displayed on the mobile device screen; and generating an infrared (IR) signal that saturates an image sensor of the external camera device used to capture the image displayed on the mobile device screen, wherein the IR signal is generated based on both detecting the image of the external camera device and determining that the detected image of the one or more authorized users only includes the one or more authorized users.

3 . The method of claim 2 , wherein a flux of photons corresponding to the one or more infrared light emitting diodes that emit the infrared (IR) light is about one hundred times larger than a flux of photons corresponding to visible light from the first sub-pixel units.

4 . The method of claim 1 , wherein the second viewing angle includes a diverted optical output from the activated second sub-pixel units towards an authorized viewer of the sensitive content, and wherein the first viewing angle includes a non-diverted optical output from the activated first sub-pixel units, wherein the diverted optical output from the activated second sub-pixel units towards the authorized viewer of the sensitive content is generated based on a facial recognition technique identifying the position of the authorized viewer relative to the mobile device screen.

5 . The method of claim 1 , wherein the infrared signal is generated by one or more infrared light emitting diodes located adjacent each of the plurality of pixels having both the first sub-pixel units and the second sub-pixel units.

6 . The method of claim 5 , wherein the infrared signal generated by the one or more infrared light emitting diodes overlap visible light from the second sub-pixel units associated with the generated image of the sensitive content on the mobile device screen.

7 . A method of protecting content displayed on a mobile device screen, the method comprising:
receiving content to be displayed on the mobile device screen, wherein the received content contains sensitive content and non-sensitive content; capturing, using a camera, an image of one or more users viewing the mobile device screen in response to the received content containing sensitive content; correlating the captured image to one or more reference images associated with authorized users; determining a correlation factor based on the comparing of the captured image to the one or more reference images; detecting the user viewing the mobile device screen as an authorized user based on the correlation factor being greater than a reference correlation factor; and generating, based on the detected image of the one or more authorized users, an image of the received content on the mobile device screen using a plurality of pixels, the plurality of pixels each having both first sub-pixel units that include a first viewing angle and second sub-pixel units that include a second viewing angle, the first sub-pixel units generating an image of the non-sensitive content on the mobile device screen at the first viewing angle and the second sub-pixel units generating an image of the sensitive content on the mobile device screen at the second viewing angle, wherein the second viewing angle has a smaller viewing angle relative to the first viewing angle for obscuring the sensitive content.

8 . The method of claim 7 , further comprising:
detecting an image of an external camera device used to capture the image of the received content displayed on the mobile device screen; and generating an infrared (IR) signal that saturates an image sensor of the external camera device used to capture the image displayed on the mobile device screen, wherein the IR signal is generated based on both detecting the image of the external camera device and determining that the detected image of the one or more authorized users only includes the one or more authorized users.

9 . The method of claim 8 , wherein a flux of photons corresponding to the one or more infrared light emitting diodes that emit the infrared (IR) light is about one hundred times larger than a flux of photons corresponding to visible light from the first sub-pixel units.

10 . The method of claim 7 , further comprising:
detecting one or more users viewing the mobile device screen as unauthorized users based on the correlation factor being less than a reference correlation factor; and generating, based on the detected one or more unauthorized users, a blank image on the mobile device screen.

11 . The method of claim 7 , wherein the second viewing angle includes a diverted optical output from the activated second sub-pixel units towards an authorized viewer of the sensitive content, and wherein the first viewing angle includes a non-diverted optical output from the activated first sub-pixel units, wherein the diverted optical output from the activated second sub-pixel units towards the authorized viewer of the sensitive content is generated based on a facial recognition technique identifying the position of the authorized viewer relative to the mobile device screen.

12 . The method of claim 7 , wherein the infrared signal is generated by one or more infrared light emitting diodes located adjacent each of the plurality of pixels having both the first sub-pixel units and the second sub-pixel units.

13 . The method of claim 12 , wherein the infrared signal generated by the one or more infrared light emitting diodes overlap visible light from the second sub-pixel units associated with the generated image of the sensitive content on the mobile device screen.

14 . A method of protecting content displayed on a mobile device screen, the method comprising:
receiving content to be displayed on the mobile device screen, wherein the received content contains sensitive content and non-sensitive content; detecting an image of one or more authorized users viewing the mobile device screen; generating, based on the detected image of the one or more authorized users, an image of the received content on the mobile device screen using a plurality of pixels, the plurality of pixels each having both first sub-pixel units that include a first viewing angle and second sub-pixel units that include a second viewing angle, the first sub-pixel units generating an image of the non-sensitive content on the mobile device screen at the first viewing angle and the second sub-pixel units generating an image of the sensitive content on the mobile device screen at the sec

Assignees

• IBM

Inventors

• Cohen Guy M
• Horesh Lior
• Horesh Raya
• Pistoia Marco

Classifications

• G06K9/00288 Primary

  Physics · mapped topic

• G06F21/32

  using biometric data, e.g. fingerprints, iris scans or voiceprints · CPC title

• G06F21/60

  Protecting data · CPC title

• G06V40/166

  using acquisition arrangements · CPC title

• G06V30/142

  using hand-held instruments; Constructional details of the instruments · CPC title