Microcomputer control system in which programs can be modified from outside of the system and newer versions of the modified programs are determined and executed
US6496978B1 · kind B1 · utility
21Cited by
8References
5Claims
0Family size
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Key dates
| Filing date | May 21, 1999 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Programs or data in a mask ROM incorporated in a one-chip microcomputer can be modified from the outside. With version information appended to each of a mask ROM 2 incorporated in a one-chip microcomputer 6 and an external EPROM 5, by comparing the version numbers, programs (tasks and subroutines) of a new version can always be executed and update data of a new version can be used. The programs can be customized for each user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.