Decryption device
OwnerJacques Lapointe, Pierre Cousineauinventors
Life of this patent
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Abstract
A decryption device, comprising a substrate, a plurality of encrypted information symbols located within a rectangular array of further symbols carried by the substrate, wherein the array is arranged in a predetermined number of rows by a further predetermined number of columns. A pair of registration marks are carried by the substrate and located on opposite sides of a predetermined one of the rows. An overlay is adapted for covering the rectangular array, and includes a first pair of apertures arranged to uncover the pair of registration marks, and a plurality of further apertures arranged to uncover the plurality of encrypted information symbols responsive to the first pair of apertures uncovering the pair of registration marks.
Claims13
A decryption device, comprising:
- a) a substrate carrying a representation of an article of merchandise;
- b) a plurality of encrypted information symbols for identifying said article of merchandise which are located within an array of further symbols carried by said substrate, said array being arranged in a plurality of rows by a further plurality of columns;
- c) a pair of registration marks carried by said substrate and located at a predetermined orientation with respect to said array, said predetermined orientation being selectable to within a predetermined number of said rows and columns of said array;
- and
- d) overlay means adapted for covering said rectangular array, said overlay means including a first pair of apertures arranged to uncover said pair of registration marks, and a plurality of further apertures arranged to uncover said encrypted information symbols responsive to said first pair of apertures uncovering said pair of registration marks, thereby identifying said article of merchandise.
A method of encrypting and decrypting information symbols, comprising the steps of:
- a) arranging a plurality of information symbols within an array of further symbols, whereby said information signals are encrypted;
- b) locating a pair of registration marks on opposite sides of said array, and at a predetermined orientation with respect to said array, said predetermined orientation being selectable to within a predetermined number of rows and columns of said array;
- c) covering said array with an overlay means, said overlay means including a first pair of spaced apart apertures adapted for uncovering said pair of registration marks, and a further plurality of apertures disposed between said first pair of apertures and adapted for uncovering said plurality of information symbols;
- and
- d) positioning said overlay means such that said first pair of apertures uncovers said registration marks, whereby said further plurality of apertures uncover and thereby decrypt said plurality of information symbols.
A decryption device, comprising:
- a) a substrate carrying a representation of an article of merchandise;
- b) a plurality of encrypted information symbols for identifying said article of merchandise which are located within an array of further symbols carried by said substrate, said array being arranged in a plurality of rows by a further plurality of columns;
- c) a pair of registration marks carried by said substrate and located at a predetermined orientation with respect to said array, said predetermined orientation being selectable to within a predetermined number of said rows and columns of said array;
- and
- d) overlay means adapted for covering said rectangular array, said overlay means including a first pair of apertures arranged to uncover said pair of registration marks, and a plurality of further apertures arranged to uncover said encrypted information symbols responsive to said first pair of apertures uncovering said pair of registration marks, thereby identifying said article of merchandise,
- said plurality of rows of said array being M in number, said further plurality of columns of said array being N in number, and wherein said predetermined orientation of said pair of registration marks is selectable to within M-3 of said rows and N-3 of said columns, and wherein said plurality of further apertures are arranged in a further predetermined number of rows, said further predetermined number of rows being M-2 in number.
Dependencies are inferred from the claim text.