US Patent 7921978 Processing data transfer method in sheet processing apparatus
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Patent abstract
This invention is to prevent a MAC of a correct answer from being calculated by use of an IC card even if count data in the database of a PC is falsified since the MAC calculated by the IC card is made invisible from the exterior of the IC card. Thus, falsification of data by enciphering the number (total sum) of cut sheets in a sheet checking equipment.
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Patent Inventor Names
Masahiro Shishikura0
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US Patent 07921978 Processing data transfer method in sheet processing apparatus US Patent 7921978 Processing data transfer method in sheet processing apparatus
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Patent Number
079219780
Patent Number
79219780
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Patent Jurisdiction
Patent Number
079219780
Date of Patent
April 12, 2011
0Patent Application Number
112198650
Date Filed
September 7, 2005
0Official Website
Patent Primary Examiner
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US Patent 07921978 Processing data transfer method in sheet processing apparatus
Infobox
Is a
Patent jurisdiction
Patent number
07921978
Date of patent
April 12, 2011
Patent application number
11219865
Date Filed
September 7, 2005
Patent primary examiner
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