Memory exchange
US6868505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Mar 10, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F15/7814
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and arrangements enable efficient reprogramming of a memory block of a microcontroller. Two blocks of memory each have a different logical location with respect to a processor of the microcontroller. The first memory may store vector information to be executed by the processor. The second memory may store data information. The logical location of each memory block is dependent on the value of a pre-determined bit in a specified register. When a user wishes to reprogram the contents of the first memory, the user enters new code into the second memory. Upon completion, the value of the pre-determined bit is changed, and the logical locations of the first and second memories are interchanged. In effect, the newly entered code from the second memory is accessed as if it were in the first memory (e.g., from an addressing perspective), and the processor may execute the new program (e.g., after the processor undergoes a system reset).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.