Method and system for detecting data error

Abstract From the Canadian patent

A data error detecting method and system which can detect whether or not there occurred an error in data stored in a memory of a computer system or the like. A new error check sign is introduced in addition to a prior art check sum sign to detect the data error on the basis of the both signs. The new error check sign is generated by applying weights that are different for different addresses in each of data blocks to the associated numbers of "1's" or "0's" of data stored at the addresses multiplying the values of the addresses to the associated weighted numbers of "1's" or "0's" and then adding the multiplication results together.