Electronic controller

Details Electronic controller Electronic controller

2011-08-30

2011-08-30

Chaudry, M. Mujtaba K (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C365S158000

Reexamination Certificate

active

08010872

ABSTRACT:
The invention improves safety of an electronic controller using a nonvolatile memory MRAM able to easily perform reading and writing operations at high speed. Therefore, MRAM for writing a control program from an external tool has a correction code adding writing circuit, a decoding reading-out circuit, and error registers for writing an error generating address number thereto as error data. When the error generating address is designated and confirmation reading-out is performed and an error is generated as before, an overlapping abnormality judgment is made and abnormality notification is performed. A program memory area of MRAM is normally in a writing inhibition state. When the external tool is connected, the inhibition state is released. The error registers are arranged in a data memory area set to no writing inhibition object.

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patent: 6690595 (2004-02-01), Srinivasan et al.
patent: 7861138 (2010-12-01), Oh
patent: 2005/0144551 (2005-06-01), Nahas
patent: 2003-104137 (2003-04-01), None
patent: 2003-115197 (2003-04-01), None
patent: 2005-208958 (2005-08-01), None

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