System and method for accessing vital data from memory

A memory system and memory access technology, which is used to ensure error-free access to key data fields stored in memory when the system is powered on, and can solve problems such as difficult to preset delay time, errors, and insufficient data access voltage.

CN1696899AInactive Publication Date: 2005-11-16SAMSUNG ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2005-11-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

PROBLEM TO BE SOLVED: To provide a memory system for safely loading main data; and to provide a main data loading method.
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Description

technical field

[0001] The present disclosure relates to a system and method for securely accessing critical data from memory; more particularly, to a system and method for ensuring error-free access to critical data stored in memory when the system is powered on. Background technique

[0002] In nearly every processing device having a processor and memory, the processor controls the device by accessing control data for properly turning on and operating components connected to the processor. Generally, a pre-allocated area of ​​memory is used to store data critical to the operation of a processing device, such as BIOS code, boot code, and Other systems turn on data. In the case of boot code, when the device is powered on, the processor first accesses the boot code in the boot block of memory. Upon power-up, a processing device, such as a personal computer, "boots" by executing boot code retrieved from memory. In a device or system that draws power from a power supply, the...

Examples

Embodiment Construction

[0026] figure 1 A block diagram of a memory system according to an embodiment of the invention is shown. refer to figure 1 , the memory system 10 includes a memory 100 , a controller 300 and a reference data storage device 200 . The memory 100 has a main area 101 for storing main data, which is data crucial to the operation of the memory system. Examples of master data are boot code, BIOS code, or operating system code, among others. The memory 101 also includes a dummy area 102 for storing test data (hereinafter referred to as "dummy data"), which is data for testing the readiness of an applied voltage as described further below. Dummy data is also stored in the reference data storage 200 . Controller 300 includes a processor (not shown) for controlling the operation of the memory system, including retrieving data from memory 100 and from reference data storage 200 . When the memory system 10 is turned on for the first time, or when there is a power-on reset operation, t...