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Memory system and operating method thereof

A memory and controller technology, applied in static memory, read-only memory, information storage, etc., can solve problems such as low storage density

Pending Publication Date: 2022-03-04
HARMAN BECKER AUTOMOTIVE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these devices have significantly lower storage densities

Method used

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  • Memory system and operating method thereof
  • Memory system and operating method thereof
  • Memory system and operating method thereof

Examples

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Embodiment Construction

[0039] figure 1 A flowchart illustrating a method 100 for changing encodings according to the invention is shown. The method begins 102 with boot memory. First, determine 104 the degree of wear of the memory. For this purpose, the number of terabytes written so far is loaded from a register provided for this purpose (eg "Health Descriptor") as a percentage of terabytes possibly written before the end of the expected lifetime of the memory. It is then checked 206 whether the number of terabytes written so far exceeds a specified target value. The target value is set in such a manner that the target value is reached at or before the end of the expected service life. For example, if the reduction in storage space is initially limited, a high target value may be specified. You can specify a lower target value if you want to ensure that the memory component operates error-free.

[0040] If the target value is not reached, the encoding will not be changed. The method continues...

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Abstract

A method for managing a memory of an on-board computer in a motor vehicle, the method comprising: determining, at regular time intervals, a degree of wear of the memory depending on an amount of data written into the memory; if the degree of wear exceeds a specified target value, the encoding of one or more units of the memory is changed from a higher density physical encoding to a lower density physical encoding.

Description

technical field [0001] The invention relates to a method for managing the memory of an on-board computer in a motor vehicle. The invention can be used in microelectronics, in particular in the field of motor vehicle electronics. Background technique [0002] This type of memory system is used to store software and application data within the vehicle's on-board computer. Since on-board computers are essentially not replaced during the entire useful life (lifetime) of the vehicle, on-board computers last significantly longer than other computers. However, during this time, the non-volatile memory used therein, particularly NAND flash memory, can reach a maximum number of write / erase cycles and fail. In order to prevent this, the memory must be replaced in advance in a timely manner. [0003] Because newer flash memory has a smaller structure size, there is less charge stored in the floating gate and thus fewer write / erase cycles, and because more data is written and read, t...

Claims

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Application Information

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IPC IPC(8): G11C16/10G11C16/14G11C16/34
CPCG11C16/10G11C16/14G11C16/3495G06F3/0616G06F3/0679G06F3/064G06F3/0653G06F3/0604
Inventor I.I.伊万诺夫
Owner HARMAN BECKER AUTOMOTIVE SYST
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