US6751336B2
Expired / Lapsed
US
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Digital authentication with digital and analog documents
Assignee: Mediasec Technologies GmbH
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Filing: 2002-05-01
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Granted: 2004-06-15
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Expires: 2022-05-01
Abstract
Abstract Techniques for incorporating authentication information into digital representations of objects and using the authentication information to authenticate the objects. The authentication information may be made from information in one portion of the digital representation and incorporated into another portion of the digital representation that does not overlap the first portion. Where the digital representation is made into an analog form and that in turn is made into a digital representation and the second digital representation is verified, the two portions must further be non-overlapping in the analog form. The information from which the authentication information is made may exist at many levels: representations of physical effects produced by the object, representations of features of the object, codes that represent the object's contents, and representations of descriptions of the object. Also disclosed are a verification server and techniques for reducing errors by an OCR. The verification server verifies authenticated documents. When a document is verified, an identifier is associated with the document and the identifier is used to locate a key for the authentication information and in some cases a second copy of the authentication information. The verification process may also involve security patterns that are a physical part of the analog form. The error reduction techniques include an error code specifying characters in the object that are confusing to OCR devices, and the error code is used to correct the results of an OCR reading of an analog form.
Inventors
- 👤 Jian Zhao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:12
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/80; H04N21/83; H04N21/835; H04N21/8358; G; G06; G06F; G06F21/00; G06F21/10; G06F21/16; G06T; G06T1/00; G06T1/0021; G06T1/005; G07; G07D; G07D7/00; G07D7/004; H04N1/00; H04N1/32; H04N1/32101; H04N1/32128; H04N1/32133; H04N1/32144; H04N1/32149; H04N1/32203; H04N1/32208; H04N1/32213; H04N1/32267; H04N1/32283; H04N7/00; H04N7/16; H04N7/167; H04N7/1675; G06T2201/00; G06T2201/005; G06T2201/0065; H04N1/32106; H04N1/32122; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3225; H04N2201/3226; H04N2201/3233; H04N2201/3235; H04N2201/3236; H04N2201/3269; H04N2201/327; H04N2201/3271; H04N2201/328; H04N2201/3281
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
148 words
Apparatus for determining authenticity of an analog form that includes semantic information and an embedded first message that is produced from the semantic information, the apparatus comprising: a processor connected via a network to a source of a digital representation that is made by digitizing the analog form, the processor including a first reader that is capable of extracting the embedded first message from the digital representation and a second reader that is capable of reading the semantic information from the digital representation, the processor responding when the digital representation is received from the source by using the first reader to extract the first message, using the second reader to read the semantic information, producing a second message from the read semantic information, comparing the second message with the read first message to determine authenticity of the analog form, and providing an indication of authenticity to the source.
Claim 2
Dependent Claim
148 words
Apparatus for determining authenticity of an analog form that includes semantic information and an embedded first message that is produced from the semantic information, the apparatus comprising: a processor connected via a network to a source of a digital representation that is made by digitizing the analog form, the processor including a first reader that is capable of extracting the embedded first message from the digital representation and a second reader that is capable of reading the semantic information from the digital representation, the processor responding when the digital representation is received from the source by using the first reader to extract the first message, using the second reader to read the semantic information, producing a second message from the read semantic information, comparing the second message with the read first message to determine authenticity of the analog form, and providing an indication of authenticity to the source.
Claim 3
Dependent Claim
31 words
The apparatus set forth in claim 1 wherein: in determining authenticity of the analog form, the processor employs further information that is accessible to the processor but not to the source.
Claim 4
Dependent Claim
26 words
The apparatus set forth in claim 2 wherein: in determining authenticity, the processor compares the first message to the information that is accessible to the processor.
Claim 5
Dependent Claim
21 words
The apparatus set forth in claim 1 wherein: the first message is encrypted; and the processor further decrypts the extracted message.
Claim 6
Dependent Claim
20 words
The apparatus set forth in claim 1 wherein: the first message is a digital signature made using the semantic information.
Claim 7
Dependent Claim
19 words
The apparatus set forth in claim 1 wherein: the first message is a digest made using the semantic information.
Claim 8
Dependent Claim
19 words
The apparatus set forth in claim 6 wherein: the first message is a digital signature made using the digest.
Claim 9
Dependent Claim
25 words
The apparatus set forth in claim 1 wherein: the reader employs a key that is accessible to the processor to interpret the embedded first message.
Claim 10
Dependent Claim
29 words
The apparatus set forth in claim 1 wherein: the reader employs a key that is accessible to the processor to extract the embedded first message from the digital representation.
Claim 11
Dependent Claim
18 words
The apparatus set forth in claim 1 wherein: the first message is a watermark in the analog form.
Claim 12
Dependent Claim
21 words
The apparatus set forth in claim 10 wherein: the analog form includes an image and the watermark is in the image.
Claim 13
Dependent Claim
23 words
The apparatus set forth in claim 1 wherein: the first message is in a form which is machine readable from the analog form.
Claim 14
Independent Claim
34 words
The apparatus set forth in either one of claims 10 or 12 wherein: the analog form is a promise to pay and the semantic information includes a specification of a payee and an amount.
Claim 15
Independent Claim
41 words
The apparatus set forth in either one of claims 10 or 12 wherein: the analog form is an identification document and the semantic information includes a specification of the entity being identified, and a specification of the issuer of the document.
Claim 16
Independent Claim
32 words
The apparatus set forth in either one of claims 10 or 12 wherein: the analog form is a banknote and the semantic information includes an amount and a specification of an issuer.
Claim 17
Dependent Claim
125 words
Apparatus for determining authenticity of an analog form that includes semantic information and an embedded first message that is produced from the semantic information, the apparatus comprising: an analog form converter that makes a digital representation of the analog form by digitizing the analog form and is coupled to a network, the analog form converter employing the network to send the digital representation to an authentication system, the authentication system responding thereto by extracting the first message from the digital representation, extracting the semantic information from the digital representation, producing a second message from the extracted semantic information, determining authenticity of the analog form by comparing the extracted first message with the second message, and providing an indication of authenticity to the analog form converter.
Claim 18
Dependent Claim
125 words
Apparatus for determining authenticity of an analog form that includes semantic information and an embedded first message that is produced from the semantic information, the apparatus comprising: an analog form converter that makes a digital representation of the analog form by digitizing the analog form and is coupled to a network, the analog form converter employing the network to send the digital representation to an authentication system, the authentication system responding thereto by extracting the first message from the digital representation, extracting the semantic information from the digital representation, producing a second message from the extracted semantic information, determining authenticity of the analog form by comparing the extracted first message with the second message, and providing an indication of authenticity to the analog form converter.
Claim 19
Dependent Claim
55 words
The apparatus for checking authenticity set forth in claim 16 wherein: the analog form converter further makes a determination from the digital representation whether the authentication system can extract the first message from the digital representation and sends the digital representation only if the determination indicates that the authentication system can extract the first message.
Claim 20
Dependent Claim
58 words
The apparatus for checking authenticity set forth in claim 16 wherein: the analog form further may include a particular security pattern; and the analog form converter further makes a determination whether the analog form has the particular security pattern and sends the digital representation only if the determination indicates that the analog form has the particular security pattern.
Claim 21
Dependent Claim
20 words
The apparatus set forth in claim 16 wherein: the first message is a digital signature made using the semantic information.
Claim 22
Dependent Claim
19 words
The apparatus set forth in claim 16 wherein: the first message is a digest made using the semantic information.
Claim 23
Dependent Claim
19 words
The apparatus set forth in claim 20 wherein: the first message is a digital signature made using the digest.
Claim 24
Dependent Claim
29 words
The apparatus set forth in claim 16 wherein: the analog form is a promise to pay and the semantic information includes a specification of a payee and an amount.
Claim 25
Dependent Claim
36 words
The apparatus set forth in claim 16 wherein: the analog form is an identification document and the semantic information includes a specification of the entity being identified, and a specification of the issuer of the document.
Claim 26
Dependent Claim
27 words
The apparatus set forth in claim 16 wherein: the analog form is a banknote and the semantic information includes an amount and a specification of an issuer.
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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) | 2007-06-15 | 2007-12-15 | 2008-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-06-15 | 2011-12-15 | 2012-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-06-15 | 2015-12-15 | 2016-06-15 | $7700.00 | Window Closed / Lapsed |