Browse Prior Art Database

System for working with confidential information

IP.com Disclosure Number: IPCOM000018706D
Original Publication Date: 2003-Aug-01
Included in the Prior Art Database: 2003-Aug-01
Document File: 3 page(s) / 108K

Publishing Venue

IBM

Abstract

Disclosed is a system for displaying personal or confidential information on a standard display in a way that it can not be read by the naked human eye. It is in combination proposed to provide a modified standard optical device like a pair of contact lenses or a pair of glasses. The modified optical device provides for an alteration of the information that is displayed on the display such that the user can read the information in its correct form.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 3

THIS COPY WAS MADE FROM AN INTERNAL IBM DOCUMENT AND NOT FROM THE PUBLISHED BOOK

YOR820020558 Kevin M Jordan/Watson/IBM Peter M Klett

System for working with confidential information

The proposal encompasses several embodiments:

a) color filtering The image can be altered to use colors with a low contrast to each other. The color can be corrected passively by the optical device. The passive optical device needs no energy nor is it direction-dependent, if the same color is used for the whole display. Disadvantage is the color distortion of images if the user looks elsewhere. If the color alteration is made active, i.e. by supplying with the optical device a corresponding processor, the color can be set to neutral for looking elsewhere, and, e.g., pulse-code modulation can be used for coded color change, thereby enhancing the protection from eavesdropping.

b) image distortion or motion The image is displayed in a distorted fashion. The optical device has an accordingly patterned optical surface having, e.g., an engraved pattern or a pattern of different refractive index, inverting the distortion. This solution probably needs direction control, which is explained further below. The image can also be moved in a frequency that does not allow recognition. The optical device provides a standstill version thereof.

c) focus shifting or wavelength shifting The image is displayed in a blurred fashion and the optical device corrects its focus passively or actively. The active solution needs power but no sophisticated microelectronics and provides a PCM focus signal. Advantage: Independent from looking direction, can be set to transmissive status for looking elsewhere. Alternatively, the wavelength of the image is altered to exhibit only a reduced wavelength spectrum over the image area. The optical device reinstalls the spectrum. Also additional colors/wavelengths can be added and subtracted by the optical device.

d) computational solution The computational variant provides a solution that is mobile and that on the laptop side is purely software-based such that it can be added to any commercially available laptop. The proposed solution is depicted in the Figure and encompasses a software program and a wearable electro-optical device that comprises an optical sensor and a small display and an image-processing unit in-between.

The information is encrypted in the laptop using an encryption program. The encrypted information is displayed on the laptop display. The optical device comprises an optical sensor receiving the encrypted image and a microprocessor doing the opposite process, i.e. decryption, and a display that displays the d...