Inventor
MARUKAWA KATSUMI
JP5 patents
Patents
5 patentsUS5717794AFeb 10, 1998
Document recognition method and system
HITACHI LTD111 citations96
US5835922ANov 10, 1998
Document processing apparatus and method for inputting the requirements of a reader or writer and for processing documents according to the requirements
HITACHI LTD89 citations92
US5768451AJun 16, 1998
Character recognition method and apparatus
HITACHI LTD48 citations89
US7236968B2Jun 26, 2007
Question-answering method and question-answering apparatus
HITACHI LTD43 citations86
US7080252B2Jul 18, 2006
Method and apparatus for secure data transmission via network
HITACHI LTD1 citations49