Document filing apparatus for storing information added to a document file
AssigneeRicoh Company, Ltd.
InventorGoroh Bessho
Life of this patent
Estimating the term…
Abstract
An image memory stores image data of a document file. A bit map developing part converts the document file into bit map image data. A difference information extraction part compares the bit map image data with the image data so as to extract difference information representing a difference between the bit map image data and the image data. The difference information is saved as a deference information file.
Claims46
A document filing apparatus comprising:
- an image memory storing image data of a document produced by reading the document by a scanner;
- a bit map developing part converting a text file describing the document into first bit map image data;
- a difference information extraction part comparing the first bit map image data with the image data so as to extract difference information representing a difference between the first bit map image data and the image data;
- and
- a memory storing the extracted difference information in the form of a file;
- and wherein said document filing apparatus is arranged such that, subsequent to said comparing, said bit map developing part converts said text file into second bit map image data.
A document filing apparatus comprising:
- first memory means for storing image data of a document produced by reading the document by a scanner;
- conversion means for converting a text file describing the document into first bit map image data;
- difference information extraction means for comparing the first bit map image data with the image data so as to extract difference information representing a difference between the first bit map image data and the image data;
- and
- second memory means for storing the extracted difference information in the form of a file;
- and
- wherein said document filing apparatus is arranged such that, subsequent to said comparing, said conversion means converts said text file into second bit map image data.
A document filing method comprising:
- storing image data of a document produced by reading the document by a scanner;
- converting a text file describing the document into first bit map image data;
- comparing the first bit map image data with the image data so as to extract difference information representing a difference between the first bit map image data and the image data;
- and
- storing the extracted difference information in the form of afile;
- and
- subsequent to said comparing, converting said text file into second bit map image data.
A computer readable medium storing program code for causing a computer to electronically file documents, comprising:
- program code means for storing image data of a document produced by reading the document by a scanner;
- program code means for converting a text file describing the document into first bit map image data;
- program code means for comparing the bit map image data with the image data so as to extract difference information representing a difference between the first bit map image data and the image data;
- and
- program code means for storing the extracted difference information in the form of a file;
- and
- wherein said program code causes said computer, subsequent to said comparing, to convert said text file into second bit map image data.
Dependencies are inferred from the claim text.