公开(公告)号：WO2002099735A1

公开(公告)日：2002-12-12

申请号：PCT/US2002/017700

申请日：2002-06-05

Applicant: MEDIASEC TECHNOLOGIES, LLC

Inventor： ZHAO, Jian

IPC: G06K9/00

CPC classification number: H04N21/8358 ,  G06F21/10 ,  G06F2221/0737 ,  G06T1/0021 ,  G06T1/005 ,  G06T2201/0065 ,  G07D7/004 ,  H04N1/32101 ,  H04N1/32122 ,  H04N1/32133 ,  H04N1/32144 ,  H04N1/32203 ,  H04N1/32213 ,  H04N1/32283 ,  H04N7/1675 ,  H04N2201/3225 ,  H04N2201/3226 ,  H04N2201/3233 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/3269 ,  H04N2201/327 ,  H04N2201/3271 ,  H04N2201/3281

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 (703) and that in turn is made into a digital representation (706) 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 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 (717) 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 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.

Abstract translation: 将认证信息合并到对象的数字表示中并使用认证信息来认证对象的技术。 认证信息可以由数字表示的一部分中的信息进行，并且被合并到与第一部分不重叠的数字表示的另一部分中。 在将数字表示形成为模拟形式（703）并且进而变成数字表示（706）并且第二数字表示被验证的情况下，这两个部分必须以模拟形式进一步不重叠。 进行认证的信息可以存在于许多层面：由对象产生的物理效应的表示，对象的特征的表示，表示对象的内容的代码以及对象的描述的表示。 还公开了一种用于通过OCR减少错误的验证服务器和技术。 验证服务器（717）验证经认证的文档。 当文档被验证时，标识符与文档相关联，并且使用标识符来定位用于认证信息的密钥，并且在某些情况下用于鉴定认证信息的第二副本。 验证过程还可以涉及作为模拟形式的物理部分的安全模式。 错误减少技术包括指定对象中与OCR设备混淆的字符的错误代码，并且错误代码用于校正模拟形式的OCR读取的结果。