Appeal No. 96-0258
Application 08/094,651
logical addresses to real addresses does not, necessarily, lead to a teaching of providing
the “offset information” claimed. We agree with appellants [page 13 of the brief] that
claim 13 does not merely provide cross reference between the virtual to physical
information but, rather, it recites “providing a page table prototype mechanism including
known cross-reference information… comprising offset information… ” We find no such
teaching or suggestion in Sawada. The claimed offset information is used to derive
physical address information from virtual address information. There is nothing in Sawada
to suggest that the type of “aid” offered by the table look-up is offset information used to
derive a physical address from a virtual address. The table look-up mechanism 12 of
Sawada does not even appear, from Figure 3, to receive physical address information,
receiving, instead, the output of comparison circuit 5 which receives, in part, information
from the logical, or virtual, address register 1. Therefore, it is difficult to see how Sawada
can be said to suggest the provision of a page table prototype mechanism including known
cross-reference information comprising offset information between certain ones of the
virtual addresses and their corresponding physical addresses, as claimed.
5
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007