Abstract: Method and system for selecting and accessing multimedia information/services located on a user workstation or on a server by touching finger items that are electronically illuminated over the surface of a hard-copy document or any other physical surface. The system includes: an opto-touch foil, placed over (or under) a portion of the document, used to highlight hyperlinked items over the surface of the physical document and to read coordinates of these hyperlinked items; and a user workstation for accessing the information/service associated with the hyperlinked items. Hyperlinked items are illuminated by the luminous signal for identifying and selecting a hyperlinked items. When a user selects an item, the workstation receives a signal indicating the position of this selected item. The user workstation identifies, locates and accesses the information/service associated with the position of the selected item.

Abstract: A system and method of creating in an electronic document a hyperlink to a physical document for locating on the physical document an item referenced in the electronic document. A user system is connected to an illuminating opto-touch foil placed on or under the physical document.

Abstract: The invention discloses how a text document can be marked through the insertion of inter-word blank characters for the purpose of becoming authenticateable. First, text to be marked is edited so as to obtain a canonical form of it conforming to a model. Then, from this canonical form of the text and a secret-key used as inputs, a unique combination of inter-word blank characters positions is computed in which extra blanks are inserted thus, obtaining a marked text document. Authentication of a received marked text document is performed by a recipient, sharing the secret-key, further comparing the received text document to the marked text document so that if they are matching exactly the received text document is accepted as authentic or rejected as fake if not. The invention allows to merge the information necessary to authenticate a text document into the body of the document itself which works as well on soft-copy and hard-copy text documents.

Abstract: The present invention discloses a system and method for selecting and accessing multimedia information and/or services located on one or a plurality of servers connected to a communication network simply by touching with a finger items marked on a physical document or on any other physical surface. The system includes a touch foil placed over (or under) the document for reading coordinates of selected marked items, and a user workstation for accessing the information and/or the service associated with the selected marked items.

Abstract: A method of marking an original text document in which existing inter-word blank characters are altered is disclosed. A reversible transform is first applied so that inter-word intervals become exclusively comprised of odd numbers of blank characters. Transformed original text is then split in two subsets and an authentication pattern is merged into first subset by adding inter-word blank characters. A blurring pattern is computed which further modify the number of blank characters so as to hide the authentication pattern. Second subset is blurred too before subsets are recombined to obtain a marked text susceptible of authentication.

Abstract: A system and method for unique authentication of each replication of a plurality of soft-copy documents, forming a group. One soft-copy document, out of the group, becomes a carrier for an authentication code aimed at protecting the group. The authentication code is computed from the concatenation of the plurality of soft-copy documents and a key. A random number is also generated for each replication of the group of files. The random number is combined with the authentication code to mark the soft-copy document which has been selected to become the carrier. Thus, the invention introduces randomization in the insertion of the authentication code so that for each replication of an identical group of data files, unique authentication data can be associated, merged and hidden in the transmitted information.

Abstract: A Transfer Logic Cell (TLC) circuit performing non-boolean logic elementary operations between a dual-rail input and a dual-rail output upon assertion of signals on at least one control terminal to operate said circuit into one of four logic modes of operation i.e. a ‘PASS’, ‘LEFT’, ‘CROSS’ or ‘RIGHT’ mode or in one of two non-logic modes i.e. ‘ISOLATION’ or ‘TRANSPARENT’ mode or in any subset of combinations of the herein above modes. And a method for assembling a plurality of TLC circuits to carry out logic functions in an array-like structure.