Electronic odometer

Details Electronic odometer Electronic odometer

G - Physics

01

C

354/15, 354/25

G01C 22/02 (2006.01) H03K 21/40 (2006.01)

Patent

CA 2017298

The present invention relates to an electronic odometer. Integrated distance travelled data to be stored in a nonvolatile memory is divided into three portions, i.e., high order digital data, medium order digital data, and low order digital data. A plurality of memories constituting the nonvolatile memory are provided. The digit which represents the medium order digital data is used to select addresses or part addresses within the memories which are to be used. The high order digital data which is required to be the most reliable of the three portions are written into at least three memory positions which have been selected by the medium order digital data and the low order digital data is written into at least one of the rest of the memory positions selected by the medium order digital data. When extracting the integrated distance travelled data from these memories, the high order digital data is determined by applying majority rule to the data read out from the at least three selected memories. The reliability on the integrated distance travelled data is enhanced by the application of majority rule.

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