Invention Grant
- Patent Title: Method and apparatus for the creation of a self-authenticating document
- Patent Title (中): 用于创建自我认证文件的方法和装置
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Application No.: US10476810Application Date: 2002-05-03
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Publication No.: US07757091B2Publication Date: 2010-07-13
- Inventor: John Duffell , Laurence O'Toole , Thomas Martin
- Applicant: John Duffell , Laurence O'Toole , Thomas Martin
- Applicant Address: GB Edinburgh
- Assignee: Abathorn Limited
- Current Assignee: Abathorn Limited
- Current Assignee Address: GB Edinburgh
- Priority: GB0111063.4 20010504
- International Application: PCT/GB02/02059 WO 20020503
- International Announcement: WO02/091730 WO 20021114
- Main IPC: H04L9/32
- IPC: H04L9/32 ; H04L29/06 ; H04L9/00 ; H04L9/28 ; G06F12/14 ; G06F7/04 ; G06F11/00 ; H04N1/44 ; H04K1/00 ; G01R31/28 ; H03M13/00
Abstract:
A self-authenticating printed document (101) comprises text and a symbol (102) printed on the document (101). The symbol (102) includes a verification value, which is representative of the entire data content of the text, and error correction codes for correcting the text. The verification value is used to check the integrity of the text after the document has been corrected using the error correction codes.
Public/Granted literature
- US20040169366A1 Method and apparatus for the creation of a self-authenticating document Public/Granted day:2004-09-02
Information query
