Invention Grant
- Patent Title: Photographic copy prevention of a screen image
-
Application No.: US15071425Application Date: 2016-03-16
-
Publication No.: US09672373B2Publication Date: 2017-06-06
- Inventor: Douglas J. Griffith , Richard B. Sutton
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Michael O'Keefe
- Main IPC: H04L29/06
- IPC: H04L29/06 ; G06F21/62 ; G06F21/10 ; G06F21/60 ; H04N5/232 ; H04N5/265

Abstract:
A method for preventing photographic capture of a displayed image on an electronically controlled screen using a photographic capture device is provided. The method includes intercepting an image for display; generating a plurality of subset frames based on the intercepted image; dividing the intercepted image into a plurality of subsections; generating a pseudo random number on each of the subsections within the plurality of subsections using a pseudo random number generator; mapping, on each of the subset frames within the plurality of subset frames, a group of subsections within the plurality of subsections that share a common generated pseudo random number; determining a frame rate value for displaying the plurality of subset frames, which enables human visualization of the plurality of subset frames as a single perceived frame; and displaying each subset frame consecutively on the electronically controlled screen based on the determined frame rate.
Public/Granted literature
- US20160196441A1 PHOTOGRAPHIC COPY PREVENTION OF A SCREEN IMAGE Public/Granted day:2016-07-07
Information query