发明名称 |
Application system with function for preventing modification |
摘要 |
A digital pen-based application form filling system with a modification prevention function, which eliminates a possibility that digital information initially written in digital paper using a digital pen may be modified deliberately or accidentally. The system prints a new fine pattern over areas in already written digital paper whose contents one wishes to protect against being modified. This printing adds a fine pattern to an original dot pattern already present on the digital paper to make it theoretically impossible to enter information into these areas using the digital pen.
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申请公布号 |
US7231601(B2) |
申请公布日期 |
2007.06.12 |
申请号 |
US20040770495 |
申请日期 |
2004.02.04 |
申请人 |
HITACHI, LTD. |
发明人 |
SAKO HIROSHI;FURUKAWA NAOHIRO;IKEDA HISASHI;KATO YOSUKE |
分类号 |
B43K29/093;G06F15/00;B42D15/00;B43K29/00;G06F1/00;G06F3/00;G06F3/03;G06F3/033;G06F3/038;G06F3/042;G06K9/00 |
主分类号 |
B43K29/093 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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