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Expired Canadian patentCanada

Explicit instructions for control of translation lookaside buffers

CA 1262287 C · Owner: Hewlett-Packard Company · Inventors: Boettner, Steven C.; Bryg, William R.; Gardner, Michael E.

CIPO record

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Abstract From the Canadian patent

of the Invention, Explicit instructions are provided that enable software to directly control insertion of information into a translation lookaside buffer (TLB). A first pair of instructions enable information to be inserted into a data TLB and a second pair of instructions enable information to be inserted into an instruction TLB. In each of these pairs the, first instruction inserts the virtual address and the associated physical address. In response to the second instruction of each of these pairs, additional information about that physical page, such as protection information and flags, is inserted.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted October 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 10, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 1986
GrantedOctober 10, 1989
Term endedOctober 10, 2006
Patent numberCA 1262287 C
Classification (IPC)G06F12/10 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJune 27, 1986Patent grantedOct 10, 1989Term endedOct 10, 2006

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.