Patent EP0132241A2 successfully refreshed from Google Patents.
EP0132241A2
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Method of signature verification
Assignee: Esselte Security Systems AB
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Filing: 1984-06-20
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Granted: —
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Expires: 2004-06-20
Abstract
Abstract The invention relates to a method of signature verification and is characterized in that an electric pulse train individual for each person in question is generated in that said persion is allowed to move a so-called reading pencil over a patterned background comprising dark and light portions, and that such a pulse train generated at a certain occasion is compared by means of a computer or the like to pulse trains generated earlier by said person and stored in said computer or the like.According to a preferred embodiment, said patterned background is a line code (1) consisting of parallel dark lines (11) separated by lighter lines or areas (10).
Inventors
- 👤 Eric Rothfjell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 20:42
CPC Classifications
G; G06; G06V; G06V40/00; G06V40/30; G06V40/37; G06V40/394; G07; G07C; G07C9/00; G07C9/30; G07C9/32; G07C9/35
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
77 words
A method of signature verification, characterized in that an electric pulse train individual for each person in question is generated in that said person is allowed to move a so-called reading pencil over a patterned background comprising dark and light portions, and that such a pulse train generated at a certain occasion is compared by a computer or the like to pulse trains generated earlier by the same person and stored in said computer or the like.
Claim 2
Independent Claim
77 words
A method of signature verification, characterized in that an electric pulse train individual for each person in question is generated in that said person is allowed to move a so-called reading pencil over a patterned background comprising dark and light portions, and that such a pulse train generated at a certain occasion is compared by a computer or the like to pulse trains generated earlier by the same person and stored in said computer or the like.
Claim 3
Dependent Claim
28 words
A method as defined in claim 1, characterized in that said patterned background is a line code consisting of parallel dark lines separated by lighter lines or areas.
Claim 4
Dependent Claim
96 words
A method as defined in claim 1, characterized in that a great number of signatures are written by the same person and stored in said computer, which is caused to compare these signatures and thereby to select portions of pulse trains generated thereby, which portions to a predetermined degree are similar to each other, and thereafter to store the selected portions in order at a later occasion to compare the selected portions to corresponding portions of the pulse train, which said person generates by moving a reading pencil over the patterned background at said later occasion.
Claim 5
Dependent Claim
43 words
A method as defined in claim 1, 2 or 3, characterized in that the line code contains information specific for the person in question, for example the person's birthdate registration number coded in the code, according to which the line code is built-up.
Claim 6
Dependent Claim
26 words
A method as defined in claim 1,2,3 or 4, characterized in that there is a predetermined position, at which the person shall commence writing the signature.
Claim 7
Independent Claim
49 words
A method as defined in any one of the preceding claims, characterized i n that in the pulse trains the length of one or several pulses in relation to the length of the pulse train or a portion of the pulse train length are characteristic values at said comparison.
Claim 8
Independent Claim
42 words
A method as defined in any one of the preceding claims, characterized i n that the duration of one or several pulses in relation to the duration of the entire pulse train or a portion thereof are characteristic values at said comparison.
Claim 9
Independent Claim
251 words
A device at signature verification, at which a person is to move an object, for example a pencil, so that the point thereof describes a plane figure, for example a name signature, characterized i n that it comprises a support (1), which is patterned, preferably patterned with a so-called line code, a reading pencil (4), which in a manner known per se is capable to emit an electric pulse train (3) when the pencil point is moved over alternatingly dark and light areas of the support, and a computer (5) with associated memory (6,8), which reading pencil (4) is capable to emit a pulse train (3) generated by the reading pencil (4) in that a person with the reading pencil writes his or her signature over the pattern (1), to the memory (6,8) of the computer (5), which computer (5) is capable to compare at least a portion of such a first pulse train stored in its memory (6,8) with at least a corresponding portion of a second pulse train, which is generated in that the person in question has written his or her signature by a reading pencil (4) over a pattern (1), which is identical with said firstmentioned pattern, and that said computer(5) is capable, when the comparison proves that the pulse trains (3) or portions thereof are to a predeterm-5 ined degree identical, to indicate that it is regarded verified, that the signature written last has been written by the same person who has written the firstmentioned signature.
Claim 10
Independent Claim
251 words
A device at signature verification, at which a person is to move an object, for example a pencil, so that the point thereof describes a plane figure, for example a name signature, characterized i n that it comprises a support (1), which is patterned, preferably patterned with a so-called line code, a reading pencil (4), which in a manner known per se is capable to emit an electric pulse train (3) when the pencil point is moved over alternatingly dark and light areas of the support, and a computer (5) with associated memory (6,8), which reading pencil (4) is capable to emit a pulse train (3) generated by the reading pencil (4) in that a person with the reading pencil writes his or her signature over the pattern (1), to the memory (6,8) of the computer (5), which computer (5) is capable to compare at least a portion of such a first pulse train stored in its memory (6,8) with at least a corresponding portion of a second pulse train, which is generated in that the person in question has written his or her signature by a reading pencil (4) over a pattern (1), which is identical with said firstmentioned pattern, and that said computer(5) is capable, when the comparison proves that the pulse trains (3) or portions thereof are to a predeterm-5 ined degree identical, to indicate that it is regarded verified, that the signature written last has been written by the same person who has written the firstmentioned signature.
Claim 11
Dependent Claim
77 words
A device as defined in claim 8, characterized in that said computer (5) is capable to store pulse trains corresponding to a great number of signatures written by the same person and to compare these and thereby to select portions of pulse trains fed-in which to a predetermined degree are identical, and that the computer (5) is capable to store such selected portions and to compare the selected portions to corresponding portions of said second pulse train.
Claim 12
Dependent Claim
36 words
A device as defined in claim 8 or 9, characterized in that said support consists of a plane surface, to which a line code (1) consisting of parallel dark lines separated by lighter lines is applied.
Claim 13
Dependent Claim
49 words
A device as defined in claim 8,9 or 10, characterized in that the line code (1) is designed to contain information specific for the person in question, for example the birthdate registration number of the person coded in the code, according to which the line code (1) is built-up.
Claim 14
Dependent Claim
35 words
A device as defined in claim 8,9,10 or 11, characterized in that the support is provided with a starting point (14), which marks the point where a person shall commence writing his or her signatured
References Cited (Backward Citations)
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