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1. (WO1991018376) PROCESSES AND PRODUCTS FOR GENERATING DOCUMENTS WITH INHERENT CONFIDENTIALITY
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018376 International Application No.: PCT/FR1991/000412
Publication Date: 28.11.1991 International Filing Date: 22.05.1991
IPC:
G09B 3/04 (2006.01) ,G09C 5/00 (2006.01)
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
B
EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
3
Manually- or mechanically-operated teaching appliances working with questions and answers
02
of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by the student
04
of chart form
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
C
CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
5
Ciphering or deciphering apparatus or methods not provided for in other groups of this subclass, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
Applicants:
BURSTIN, Gilles [FR/FR]; FR
Inventors:
BURSTIN, Gilles; FR
Priority Data:
90/0635222.05.1990FR
Title (EN) PROCESSES AND PRODUCTS FOR GENERATING DOCUMENTS WITH INHERENT CONFIDENTIALITY
(FR) PROCEDES ET PRODUITS POUR LA GENERATION DE DOCUMENTS A CONFIDENTIALITE INTRINSEQUE
Abstract:
(EN) Process for ensuring, without the use of an envelope, the inherent confidentiality of documents, and products for implementing said process. The printing medium of the document is firstly coated with a pattern (1) for scrambling and making the printed text unintelligible, whereby the two impressions merge and/or mask each other. To access the information printed on the medium, it needs to be revealed by applying a particular treatment which alters, in a different manner, the printed text and the scrambling pattern in order for them to be sufficiently differentiated to enable the information to be read. The process can be used, in particular, for rendering documents generated by any type of printer, including facsimile or reprographic systems, instantly confidential without the use of an envelope.
(FR) La présente invention concerne un procédé permettant d'assurer intrinsèquement, sans utilisation d'enveloppe, la confidentialité de documents, et des produits susceptibles de permettre la mise en ÷uvre de ce procédé. Selon le procédé, le support destiné à l'impression du document est revêtu préalablement d'un motif de brouillage (1) destiné à rendre inintelligible l'impression utile, du fait que les deux impressions se confondent et/ou se masquent. Pour prendre connaissance de l'information imprimée sur le support, il faut la révéler en appliquant au support un traitement spécifique, altérant différemment l'imression utile et le motif de brouillage de façon à créer une différenciation suffisante pour permettre l'interprétation. Le procédé peut être utilisé notamment pour assurer, sans utilisation d'enveloppe, une confidentialité immédiate aux documents générés par n'importe quel type d'imprimante, y compris les sytèmes de télécopie ou de reprographie.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: French (FR)
Filing Language: French (FR)