US5530755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secured apparatus and process for securing the transmission of documents by fax and graphic code for the authentication of an image
Assignee: Orange SA
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Filing: 1994-08-16
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Granted: 1996-06-25
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Expires: 2014-08-16
Abstract
Abstract The invention relates to a secured apparatus for the transmission of documents by facsimile or fax, which comprises on the emitter side a securing module placing in the binary file transmitted and representing the document a graphic signature of the "morse" type placed on a page of the document and including on the recipient side a module for decoding and checking the graphic signature. The invention also relates to a process for securing the transmission of documents by fax and an image authentication graphic code.
Inventors
- 👤 Jean-Claude Pailles
- 👤 Olivier Lepetit
- 👤 Isabelle Milet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:37
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32101; H04N1/32128; H04N1/32133; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3225; H04N2201/3233; H04N2201/3269; H04N2201/3271; H04N2201/3278
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
103 words
Apparatus for the transmission of a document by fax, which, on an emitter side, comprises a securing module placing in a binary file transmitted and representing one page of said document, a graphic signature of the "morse" type including a group of lines formed by a series of squares corresponding to a coding of said page, a square of a first color corresponding to a binary "1", while a square of a second color corresponds to a binary "0", the squares of each line being contiguous, a line space separating two adjacent lines, said group being placed on a page of the document.
Claim 2
Dependent Claim
103 words
Apparatus for the transmission of a document by fax, which, on an emitter side, comprises a securing module placing in a binary file transmitted and representing one page of said document, a graphic signature of the "morse" type including a group of lines formed by a series of squares corresponding to a coding of said page, a square of a first color corresponding to a binary "1", while a square of a second color corresponds to a binary "0", the squares of each line being contiguous, a line space separating two adjacent lines, said group being placed on a page of the document.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1, comprising a microcomputer which calculates and positions the graphic signature at the time of composing a message to be contained on the document.
Claim 4
Dependent Claim
15 words
Apparatus according to claim 1, comprising a fax machine secured with an integrated securing module.
Claim 5
Dependent Claim
19 words
Apparatus according to claim 1, comprising a fax machine with a securing box in series on the transmission line.
Claim 6
Dependent Claim
30 words
Apparatus according to claim 1, wherein a security module is integrated in the securing module to obtain an electronic signature of the message, which is integrated in the graphic coding.
Claim 7
Dependent Claim
37 words
Apparatus according to claim 5, wherein the security module has a smart card reader adapted to read a smart card specific to each user and having a confidential code enabling the user to authenticate the smart card.
Claim 8
Dependent Claim
20 words
Apparatus according to claim 1, which, on a recipient side, comprises a module for decoding and checking the graphic signature.
Claim 9
Dependent Claim
26 words
Process for securing the transmission of documents by fax, wherein, on emission, associating with each emitted document page a graphic signature representing said emitted document page.
Claim 10
Dependent Claim
26 words
Process for securing the transmission of documents by fax, wherein, on emission, associating with each emitted document page a graphic signature representing said emitted document page.
Claim 11
Dependent Claim
82 words
Process according to claim 8, wherein said graphic signature is formed from several symbol lines separated by line spaces, an elementary symbol being a square, any bit with the value 1 being represented by a square of a given color and any bit with the value 0 being represented by a square of a different color, the informations being contiguous, and left and right marks, useful during reading back of the bits, being placed at a start and end of the line.
Claim 12
Dependent Claim
32 words
Process according to claim 1, wherein the signature is placed at a bottom of the page, or on a supplementary page grouping the graphic signatures of all the pages of the document.
Claim 13
Dependent Claim
34 words
Process according to claim 8, wherein, in order to ensure a high immunity to noise of the graphic signature, redundancy bits are added to the coded signal permitting correction of isolated errors during reading.
Claim 14
Dependent Claim
20 words
Process according to claim 11, wherein use is made of a Hamming code on 127 bits with 7 check bits.
Claim 15
Dependent Claim
51 words
Process according to claim 9, wherein, on reception, use is made of an "antinoise" morphological masking to eliminate on that part of the bitmap file corresponding to the graphic signature, the image defects which have occurred during transmission and/or printing and/or storage whose size is smaller than that of the squares.
Claim 16
Dependent Claim
32 words
Process according to claim 8, wherein, on reception, a bitmap file of an image is received directly, or is obtained from a rescanned sheet in the case of an a posteriori check.
Claim 17
Dependent Claim
47 words
Process according to claim 14, wherein there is a sequential reading of the bits line by line commencing with the first bit top left, the left and right marks added during the formation of the graphic signature making it possible to guide the reading of the bits.
Claim 18
Dependent Claim
45 words
Process according to claim 15, wherein, in the case of an a posteriori check, the fax page is printed and a calculation is made of the algebraic excess εi added to each identical "0" or "1" bit block and a fault is detected if ##EQU3##
Claim 19
Dependent Claim
18 words
Process according to claim 14, wherein consistency between bits of the message and electronic signature bits is checked.
Claim 20
Dependent Claim
20 words
Process according to claim 17, wherein consistency between decoded graphic signature and the image received in uncoded form is checked.
Claim 21
Dependent Claim
36 words
Process according to claim 18, wherein, on reception and in the case of an a posteriori check, an "elastic" difference is formed between the image from the graphic signature and the image received in uncoded form.
Claim 22
Dependent Claim
72 words
Graphic code for authenticating an image comprising a group of lines formed from a series of squares corresponding to a coding of said image, a square of a first color corresponding to a binary "1", while a square of a second color corresponds to a binary "0", the squares of each line being contiguous, a line space separating two adjacent lines, said group being placed at a given location of the image.
Claim 23
Dependent Claim
72 words
Graphic code for authenticating an image comprising a group of lines formed from a series of squares corresponding to a coding of said image, a square of a first color corresponding to a binary "1", while a square of a second color corresponds to a binary "0", the squares of each line being contiguous, a line space separating two adjacent lines, said group being placed at a given location of the image.
Claim 24
Dependent Claim
17 words
Code according to claim 20, wherein the first color is black and the second color is white.
Claim 25
Dependent Claim
16 words
Code according to claim 20, wherein each line starts and finishes with left and right marks.
Claim 26
Dependent Claim
27 words
Code according to claim 22, wherein the left and right marks are formed from two black squares separated from squares representing useful bits by a white square.
Claim 27
Dependent Claim
21 words
Code according to claim 20, wherein the group of lines are located at the bottom of a page of a document.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-25 | 1999-12-25 | 2000-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-25 | 2003-12-25 | 2004-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-25 | 2007-12-25 | 2008-06-25 | $7700.00 | Window Closed / Lapsed |