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A-61510 January 2005 2-15
Two level offset indexing
When using two level offset indexing, the image address
assigned to each document is defined as follows:
• Field D (Level 2) defined as having a field length greater than 0.
• Fields C, B and A may be defined as fixed fields if desired.
For example, if you scan a book with 2 chapters (Chapter 1 has
40 pages and Chapter 2 has 60 pages), the image address has
been defined:
• Field D has 2 characters
• Field C has 0 characters
• Field B has 0 characters
• Field D has 0 characters
Chapter 1
Header
Page 1-1
Page 1-2
Page…
Page 1-40
Chapter 2
Header
Page 2-1
Page 2-2
Pa
g
e…
Page 2-60
Image Address 01
Image Address 01
Image Address 01
Image Address 01
Image Address 02
Image Address 02
Image Address 02
Image Address 02
The header page for Chapter 1 is assigned image address 01.
The remaining pages of Chapter 1 are also assigned image
address 01.
The header page for Chapter 2 is assigned image address 02.
The remaining pages of Chapter 2 are also assigned image
address 02.
Either one of the chapter header pages may later be located and
retrieved using its unique image address. Pages within a chapter
may be located and retrieved by first finding the chapter header
and then manually scrolling through the remaining pages of the
chapter.