Automatic flowgraph generation for program analysis and translation
CA 2081978 C · Owner: Digital Equipment Corporation · Inventors: Sites, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A program is translated by automatically generating a flowgraph using the flowgraph to analyze the program to provide information about blocks of instructions in the flowgraph and then using the flowgraph and, the information about the blocks of instructions to generate translated instructions. The flowgraph is used during analysis of the program to control gathering and storage of information about the blocks of instructions and checking for consistency of the information over paths in the flowgraph. The information for each block includes, for example register usage, stack, usage, condition code usage return mask usage, and any occurrence of non-standard returns. This information is used …
Read the whole patent
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
- Filed March 5, 1992 and granted May 19, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.