Patent US4292991A successfully refreshed from Google Patents.
Patent US5948103A successfully refreshed from Google Patents.
US5948103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic document security system, affixed electronic seal security system and electronic signature security system
Assignee: Wacom Co Ltd
•
Filing: 1997-02-25
•
Granted: 1999-09-07
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Expires: 2017-02-25
Abstract
Abstract An electronic document security system, a fixed electronic seal security system, and an electronic signature security system. A method for security coding a document uses a symbolic figure such as a signature or a seal. An electronic document including a symbolic figure is stored. The electronic document is encoded in accordance with a confidential key and a predetermined characteristic is extracted from the encoded electronic document. The symbolic figure is then modified in accordance with the characteristic. The confidential key and the symbolic figure may be stored in a portable media to increase the security.
Inventors
- 👤 Yasuhiro Fukuzaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:22
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32101; H04N1/32144; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3225; H04N2201/3233; H04N2201/3235; H04N2201/3236; H04N2201/3274
Claims Analysis
Total Claims: 62
Claim 1
Independent Claim
72 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure externally and separately from the electronic document; means for extracting a predetermined characteristic of the document; means for modifying the symbolic figure in accordance with the extracted characteristic and providing a modified symbolic figure; means for electronically transferring the electronic document and the modified symbolic figure; and means for separately transferring the symbolic figure.
Claim 2
Dependent Claim
72 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure externally and separately from the electronic document; means for extracting a predetermined characteristic of the document; means for modifying the symbolic figure in accordance with the extracted characteristic and providing a modified symbolic figure; means for electronically transferring the electronic document and the modified symbolic figure; and means for separately transferring the symbolic figure.
Claim 3
Dependent Claim
75 words
The electronic document security system as claimed in claim 1, further comprising: means for receiving the transferred document; means for extracting the characteristic of the received document; means for providing a reconstituted characteristic of the modified symbolic figure and the symbolic figure; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document by comparing the characteristic of the received document and the reconstituted characteristic.
Claim 4
Dependent Claim
16 words
The document security system as claimed in claim 2, wherein the symbolic figure includes a signature.
Claim 5
Dependent Claim
16 words
The document security system as claimed in claim 2, wherein the symbolic figure includes a seal.
Claim 6
Dependent Claim
29 words
The document security system as claimed in claim 2, wherein the symbolic figure includes color data and wherein the means for modifying the symbolic figure modifies the color data.
Claim 7
Dependent Claim
35 words
The document security system as claimed in claim 2, wherein the symbolic figure includes position, size, or shape data and wherein the means for modifying the symbolic figure modifies the position, size or shape data.
Claim 8
Dependent Claim
20 words
The document security system as claimed in claim 2, further comprising a portable storage media for storing the symbolic figure.
Claim 9
Dependent Claim
41 words
The document security system as claimed in claim 2, wherein the means for extracting the predetermined characteristic includes means for assigning a numeric value to elements of the electronic document and means for totaling the numeric values to produce a checksum.
Claim 10
Dependent Claim
16 words
The document security system as claimed in claim 1, wherein the symbolic figure includes a signature.
Claim 11
Dependent Claim
16 words
The document security system as claimed in claim 1, wherein the symbolic figure includes a seal.
Claim 12
Dependent Claim
29 words
The document security system as claimed in claim 1, wherein the symbolic figure includes color data and wherein the means for modifying the symbolic figure modifies the color data.
Claim 13
Dependent Claim
35 words
The document security system as claimed in claim 1, wherein the symbolic figure includes position, size, or shape data and wherein the means for modifying the symbolic figure modifies the position, size, or shape data.
Claim 14
Dependent Claim
20 words
The document security system as claimed in claim 1, further comprising a portable storage media for storing the symbolic figure.
Claim 15
Dependent Claim
41 words
The document security system as claimed in claim 1, wherein the means for extracting the predetermined characteristic includes means for assigning a numeric value to elements of the electronic document and means for totaling the numeric values to produce a checksum.
Claim 16
Dependent Claim
21 words
The document security system as claimed in claim 1, wherein the means for storing the symbolic figure is a memory device.
Claim 17
Dependent Claim
58 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for extracting a predetermined characteristic of the document; and means for modifying the symbolic figure in accordance with the extracted characteristic, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 18
Dependent Claim
58 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for extracting a predetermined characteristic of the document; and means for modifying the symbolic figure in accordance with the extracted characteristic, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 19
Dependent Claim
23 words
The document security system as claimed in claim 16, further comprising a portable media for storing the disturbance data and the symbolic figure.
Claim 20
Dependent Claim
106 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for extracting a predetermined characteristic of the document; and means for modifying the symbolic figure in accordance with the extracted characteristic; means for electronically transferring the electronic document having a modified symbolic figure; means for receiving the transferred document; means for extracting the characteristic of the received document; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 21
Dependent Claim
106 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for extracting a predetermined characteristic of the document; and means for modifying the symbolic figure in accordance with the extracted characteristic; means for electronically transferring the electronic document having a modified symbolic figure; means for receiving the transferred document; means for extracting the characteristic of the received document; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 22
Dependent Claim
91 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure externally and separately from the electronic document; means for extracting a predetermined characteristic of the document; means for encoding the characteristic of the electronic document in accordance with a confidential key; means for modifying the symbolic figure in accordance with the encoded characteristic of the electronic document and providing a modified symbolic figure; means for electronically transferring the electronic document and the modified symbolic figure; and means for separately transferring the symbolic figure.
Claim 23
Dependent Claim
91 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure externally and separately from the electronic document; means for extracting a predetermined characteristic of the document; means for encoding the characteristic of the electronic document in accordance with a confidential key; means for modifying the symbolic figure in accordance with the encoded characteristic of the electronic document and providing a modified symbolic figure; means for electronically transferring the electronic document and the modified symbolic figure; and means for separately transferring the symbolic figure.
Claim 24
Dependent Claim
76 words
The document security system as claimed in claim 19, further comprising: means for receiving the transferred document; means for extracting the characteristic of the received document; means for decoding the modified symbolic figure and provide a reconstituted characteristic of the modified symbolic figure and the symbolic figure; and means for determining whether the modified symbolic figure is modified in accordance with the confidential key by comparing the characteristic of the received document and the reconstituted characteristic.
Claim 25
Dependent Claim
16 words
The document security system as claimed in claim 20, wherein the symbolic figure includes a signature.
Claim 26
Dependent Claim
16 words
The document security system as claimed in claim 20, wherein the symbolic figure includes a seal.
Claim 27
Dependent Claim
29 words
The document security system as claimed in claim 20, wherein the symbolic figure includes color data and wherein the means for modifying the symbolic figure modifies the color data.
Claim 28
Dependent Claim
35 words
The document security system as claimed in claim 20, wherein the symbolic figure includes position, size, or shape data and wherein the means for modifying the symbolic figure modifies the position, size, or shape data.
Claim 29
Dependent Claim
24 words
The document security system as claimed in claim 20, further comprising a portable storage media for storing the symbolic figure and the confidential key.
Claim 30
Dependent Claim
16 words
The document security system as claimed in claim 19, wherein the symbolic figure includes a signature.
Claim 31
Dependent Claim
16 words
The document security system as claimed in claim 19, wherein the symbolic figure includes a seal.
Claim 32
Dependent Claim
29 words
The document security system as claimed in claim 19, wherein the symbolic figure includes color data and wherein the means for modifying the symbolic figure modifies the color data.
Claim 33
Dependent Claim
35 words
The document security system as claimed in claim 19, wherein the symbolic figure includes position, size, or shape data and wherein the means for modifying the symbolic figure modifies the position, size, or shape data.
Claim 34
Dependent Claim
24 words
The document security system as claimed in claim 19, further comprising a portable storage media for storing the symbolic figure and the confidential key.
Claim 35
Dependent Claim
21 words
The document security system as claimed in claim 19, wherein the means for storing the symbolic figure is a memory device.
Claim 36
Dependent Claim
62 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for encoding the electronic document in accordance with a confidential key; and means for modifying the symbolic figure in accordance with the encoded electronic document, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 37
Dependent Claim
62 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for encoding the electronic document in accordance with a confidential key; and means for modifying the symbolic figure in accordance with the encoded electronic document, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 38
Dependent Claim
102 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for encoding the electronic document in accordance with a confidential key; means for modifying the symbolic figure in accordance with the encoded electronic document; means for electronically transferring the electronic document having a modified symbolic figure; means for receiving the transferred document; means for decoding the received document; and means for determining whether the modified symbolic figure is modified in accordance with the confidential key, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 39
Dependent Claim
102 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for encoding the electronic document in accordance with a confidential key; means for modifying the symbolic figure in accordance with the encoded electronic document; means for electronically transferring the electronic document having a modified symbolic figure; means for receiving the transferred document; means for decoding the received document; and means for determining whether the modified symbolic figure is modified in accordance with the confidential key, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 40
Dependent Claim
26 words
The document security system as claimed in claim 33, further comprising a portable media for storing the disturbance data, the symbolic figure, and the confidential key.
Claim 41
Dependent Claim
82 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure separately from the electronic document; means for encoding the electronic document in accordance with a confidential key and for extracting a predetermined characteristic from the encoded electronic document; means for modifying the symbolic figure in accordance with the characteristic providing a modified symbolic figure; and means for electrically transferring the electronic document and the modified symbolic figure; means for separately transferring the symbolic figure.
Claim 42
Dependent Claim
82 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure separately from the electronic document; means for encoding the electronic document in accordance with a confidential key and for extracting a predetermined characteristic from the encoded electronic document; means for modifying the symbolic figure in accordance with the characteristic providing a modified symbolic figure; and means for electrically transferring the electronic document and the modified symbolic figure; means for separately transferring the symbolic figure.
Claim 43
Dependent Claim
73 words
The document security system as claimed in claim 35, further comprising: means for receiving the transferred document; means for extracting the characteristic of the received document; means for providing a reconstituted characteristic from the symbolic figure and the symbolic figure; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document by comparing the characteristic of the received document and the reconstituted characteristic.
Claim 44
Dependent Claim
16 words
The document security system as claimed in claim 36, wherein the symbolic figure includes a signature.
Claim 45
Dependent Claim
16 words
The document security system as claimed in claim 36, wherein the symbolic figure includes a seal.
Claim 46
Dependent Claim
29 words
The document security system as claimed in claim 36, wherein the symbolic figure includes color data and wherein the means for modifying the symbolic figure modifies the color data.
Claim 47
Dependent Claim
36 words
The document security system as claimed in claim 36, wherein the symbolic figure includes position, size, or shape data and wherein the means for modifying the symbolic figure modifies the position, or size, or shape data.
Claim 48
Dependent Claim
20 words
The document security system as claimed in claim 36, further comprising a portable storage media for storing the symbolic figure.
Claim 49
Dependent Claim
41 words
The document security system as claimed in claim 36, wherein the means for extracting the predetermined characteristic includes means for assigning a numeric value to elements of the electronic document and means for totaling the numeric values to produce a checksum.
Claim 50
Dependent Claim
21 words
The document security system as claimed in claim 35, wherein the means for storing the symbolic figure is a memory device.
Claim 51
Dependent Claim
118 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for encoding the electronic document in accordance with a confidential key and for extracting a predetermined characteristic from the encoded electronic document; means for modifying the symbolic figure in accordance with the characteristic; means for electronically transferring the electronic document having a modified symbolic figure; means for receiving the transferred document; means for extracting the characteristic of the received document; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 52
Dependent Claim
118 words
An electronic document security system, comprising: means for storing an electronic document, the electronic document including a symbolic figure; means for encoding the electronic document in accordance with a confidential key and for extracting a predetermined characteristic from the encoded electronic document; means for modifying the symbolic figure in accordance with the characteristic; means for electronically transferring the electronic document having a modified symbolic figure; means for receiving the transferred document; means for extracting the characteristic of the received document; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document, wherein the means for modifying the symbolic figure includes means for disturbance processing controlled by disturbance data.
Claim 53
Dependent Claim
23 words
The document security system as claimed in claim 44, further comprising a portable media for storing the disturbance data and the symbolic figure.
Claim 54
Dependent Claim
131 words
In electronic document security system, a method for security coding and authenticating a document comprising the steps of: storing and manipulating an electronic document; storing a symbolic figure externally and separately from the electronic document; encoding the electronic document in accordance with a confidential key and extracting a predetermined characteristic from the encoded electronic document; modifying the symbolic figure in accordance with the characteristic; electronically transferring the electronic document and a modified symbolic figure; receiving the transferred document; extracting a characteristic of the received document; providing a reconstituted characteristic from the modified symbolic figure and the and the symbolic figure; and determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document by comparing the characteristic of the received document and the reconstituted characteristic.
Claim 55
Dependent Claim
131 words
In electronic document security system, a method for security coding and authenticating a document comprising the steps of: storing and manipulating an electronic document; storing a symbolic figure externally and separately from the electronic document; encoding the electronic document in accordance with a confidential key and extracting a predetermined characteristic from the encoded electronic document; modifying the symbolic figure in accordance with the characteristic; electronically transferring the electronic document and a modified symbolic figure; receiving the transferred document; extracting a characteristic of the received document; providing a reconstituted characteristic from the modified symbolic figure and the and the symbolic figure; and determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document by comparing the characteristic of the received document and the reconstituted characteristic.
Claim 56
Dependent Claim
24 words
The method as claimed in claim 46, further comprising the step of storing the confidential key and the symbolic figure in a portable media.
Claim 57
Dependent Claim
14 words
The method as claimed in claim 47, wherein the symbolic figure includes a signature.
Claim 58
Dependent Claim
14 words
The method as claimed in claim 47, wherein the symbolic figure includes a seal.
Claim 59
Dependent Claim
40 words
The method as claimed in claim 47, wherein the step of extracting the predetermined characteristic includes the sub-step of assigning a numeric value to elements of the electronic document and means for totaling the numeric values to achieve a checksum.
Claim 60
Dependent Claim
17 words
The method as claimed in claim 46, wherein the symbolic figure is stored in a memory device.
Claim 61
Dependent Claim
127 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure externally and separately from the electronic document; means for extracting a predetermined characteristic of the document; means for modifying the symbolic figure in accordance with the extracted characteristic and providing a modified symbolic figure; means for electronically transferring the electronic document and the modified symbolic figure; means for receiving the transferred document; means for extracting the characteristic of the received document; means for providing a reconstituted characteristic form the modified symbolic figure and the symbolic figure; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document by comparing the characteristic of the received document and the reconstituted characteristic.
Claim 62
Dependent Claim
127 words
An electronic document security system, comprising: means for storing an electronic document; means for storing a symbolic figure externally and separately from the electronic document; means for extracting a predetermined characteristic of the document; means for modifying the symbolic figure in accordance with the extracted characteristic and providing a modified symbolic figure; means for electronically transferring the electronic document and the modified symbolic figure; means for receiving the transferred document; means for extracting the characteristic of the received document; means for providing a reconstituted characteristic form the modified symbolic figure and the symbolic figure; and means for determining whether the modified symbolic figure is modified in accordance with the extracted characteristic of the received document by comparing the characteristic of the received document and the reconstituted characteristic.
References Cited (Backward Citations)
JPH02134940A
Cited
JPH0367356A
Cited
JPH03189716A
Cited
JPH03195229A
Cited
US5031214A
Cited
JPH0411877A
Cited
JPH0491531A
Cited
JPH04160493A
Cited
JPH0695591A
Cited
JPH05260043A
Cited
JPH0620199A
Cited
JPH06103425A
Cited
JPH06103426A
Cited
JPH06150082A
Cited
JPH06162289A
Cited
JPH06161354A
Cited
JPH06224896A
Cited
JPH06315036A
Cited
JPH07135680A
Cited
JPH07162451A
Cited
US5689567A
Cited
JPH07200137A
Cited
US5719940A
Cited
JPH0816311A
Cited
US5606609A
Cited
US5706427A
Cited
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