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Memory arrangement and method for the operation thereof

A technology for storage devices and storage locations, applied in static storage, protection of storage content from loss, generation of response errors, etc., can solve problems such as increasing the cost of storage devices, achieve the effect of fewer storage locations and ensure high controllability

Inactive Publication Date: 2008-08-27
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the memory can continue to be used even if a large number of bit errors occur in close proximity to each other, a large amount of redundant information is required, which increases the required memory locations and thus increases the cost of the storage device

Method used

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  • Memory arrangement and method for the operation thereof
  • Memory arrangement and method for the operation thereof
  • Memory arrangement and method for the operation thereof

Examples

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Embodiment Construction

[0025] As an example of the data processing system of the present invention, the Kfz control device is shown as a block diagram in FIG. 1 . It comprises a processor 101, a flash memory 102 in which instructions of an application program executed by the processor 101 are stored, a memory monitoring circuit 103 assigned to the flash memory, a read-write memory 104, a device for collecting or influencing operating parameters of the vehicle engine Various sensors 105 and actuators are not shown. Components 101 to 105 communicate via a common data bus and address bus 106 . The data bus can be, for example, 16 bits. The number of bits of the storage unit of the flash memory is relatively large, for example here 16+3 bits, wherein the 16-bit data word each contains the program instruction to be processed by the processor 1, and the remaining 3 bits contain the redundant information that enables the memory monitoring circuit 103 to identify whether there is a bit error in the data w...

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PUM

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Abstract

The invention relates to a memory arrangement which comprises a writable data memory (102) and means for recognising (103) an error in a data word which is read by the data memory (102), and which is used to correct (101) the error and to memorise (101) the corrected data word on a new address in a free area of the data memory (102).

Description

technical field [0001] The invention relates to a memory device with a writable data memory and a unit for detecting and correcting errors in data words read from the data memory, and to a method for operating such a memory device. Background technique [0002] Malfunctions can occur in writable data memories, which manifest as one or more bits of a stored data word suddenly changing their value. If such data storage devices are used in safety-relevant applications, for example in engine control units of motor vehicles or the like, it is absolutely necessary to detect such faults and take appropriate corresponding measures to avoid dangerous malfunctions. In the simplest case, a corresponding measure consists in that, when an error is detected, the application accessing the data memory is terminated in a predetermined manner, so that the erroneous data value is no longer accessed and the error control is eliminated due to this error. Do not run the application as long as th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10
CPCG06F11/1008G06F11/08G06F12/16G11C29/00
Inventor T·科特克Y·科拉尼M·弗克
Owner ROBERT BOSCH GMBH
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