Method for providing non-public video data on public visual display device

Application Number  00129487 Application Date  2000.12.29
Publication Number  1304131 Publication Date  2001.07.18
Priority Information   2000/1/12 US 09/481897  
Applicant(s) Name  International Business Machine Corp.  
Inventor(s) Name  J.M. Denon;E.H. Steon;B.E. Wenlna  
Patent Agency Code  72001 Patent Agent  wu limeng
AbstractA method for providing privately viewable data in a publicly viewable display comprises the steps of: generating a sequencing pattern; generating a data signal having interspersed frames of private data among frames of masking data according to the sequencing pattern; providing the data signal to the publicly viewable display; and, opening and closing shutters in a set of active glasses in accordance with the sequencing pattern. In consequence of the preferred method, a user viewing the display with the active glasses can view the private data and unauthorized viewers without the active glasses can view only the private data obscured by the masking data.