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US-9218302-B2 · Dec 22, 2015 · US
Protection of a program waiting to be executed in a memory used by a microprocessor
US8996874B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8996874-B2 |
| Application number | US-81732504-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 1, 2004 |
| Priority date | Apr 3, 2003 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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A method for authorizing an access to a table of address correspondence between a multitask CPU and at least one memory containing several programs, consisting of calculating, on each task change of the CPU, a signature of at least part of the program instruction lines, and checking the conformity of this signature with a signature recorded upon previous execution of the involved program.
First claim
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What is claimed is: 1. A method, comprising: executing, by a multitasking processor in a foreground, a first program module, the executing including accessing a table of address correspondence between the multitasking processor and a memory storing instruction lines of multiple program modules; transitioning from foreground execution of the first program module by the multitasking processor to foreground execution by the multitasking processor of another program module of the mu…
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Physics · mapped topic
- G06F12/1475Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8996874B2 cover?
- A method for authorizing an access to a table of address correspondence between a multitask CPU and at least one memory containing several programs, consisting of calculating, on each task change of the CPU, a signature of at least part of the program instruction lines, and checking the conformity of this signature with a signature recorded upon previous execution of the involved program.
- Who is the assignee on this patent?
- Courcambeck Stéphan, Anguille Claude, St Microelectronics Sa
- What technology area does this patent fall under?
- Primary CPC classification G06F12/1475. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).