Showing papers on "Data Corruption published in 1991"
Patent•
15 Apr 1991
TL;DR: In order to overcome problems of data corruption, particularly power down situations in automotive applications occuring during a write operation, the authors provides a section of electronically erasable programmable read-only memory (EEPROM), means for programming the EEPROM including means for transforming input data into specific codes of a code set, each code of the set having the same number of data bits and the same predetermined number of bits of one logical state.
Abstract: In order to overcome problems of data corruption, particularly power down situations in automotive applications occuring during a write operation, the invention provides a section of electronically erasable programmable read only memory (EEPROM), means for programming the EEPROM including means for transforming input data into specific codes of a code set, each code of the set having the same number of data bits and the same predetermined number of data bits of one logical state, means for writing the codes representing the input data into the EEPROM, and means for reading the codes stored in EEPROM including means for checking said codes for data corruption by determining whether said codes contain said predetermined number.
7 citations
Patent•
30 Oct 1991
TL;DR: In this paper, the data to be stored is monitored (by a discriminator 102 or software) to ensure that in each data byte written to the memory 14 a predetermined fixed number of bits is set.
Abstract: In memory system 103 for use with a microprocessor 10 via a data bus 16, an address bus 15 and read and write lines 100 and 101, the data to be stored is monitored (by a discriminator 102 or software) to ensure that in each data byte written to the memory 14 a predetermined fixed number of bits is set. Memory 14 comprises storage cells which provide the memory function having a high energy storage state (SET) and a low energy storage state (CLEAR). Data corruption occurs by a mechanism of reversion from the clear state to the SET state, so discriminator 102 serves to indicate data corruption in read data if the number of bits set in retrieved data exceeds the predetermined value.