Method and system for controlling memory card
A control method and memory card technology, applied in the field of memory cards, can solve problems such as failure to mount data on memory cards, consume a lot of memory resources, and reduce real-time performance of the system, so as to ensure transmission efficiency, ensure transmission, improve security and accuracy sexual effect
Active Publication Date: 2021-12-03
INTEWELL (GUANGZHOU) SOFEWARE TECH CO LTD
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Problems solved by technology
[0003] Existing, if you need to quickly start the memory card and realize the automatic transfer and verification of the data in the memory card, it will consume a lot of memory resources
In particular, in the case of limited memory resources, it is easy to reduce the real-time performance of the system
Moreover, it may also cause the memory card to fail to mount or lose data during the startup process.
Method used
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Embodiment
[0051] This application provides a memory card control system, refer to figure 1 , the control system may include a central processing unit, a first controller and a second controller.
[0052] Among them, a central processing unit (Central Processing Unit, CPU), as the computing and control core of the computer system, is the final execution unit for information processing and program operation. Further, the central processing unit can be used to execute computer instructions, such as executing an instruction program corresponding to the memory card control method.
[0053] Wherein, the first controller is mainly used for connecting an external memory card, and can set and / or read and write the memory card. When the memory card is a secure digital (Secure Digital, SD) card, the first controller may be a secure digital input and output card (Secure Digital Input and Output, SDIO) controller, referred to as the SDIO controller, which is defined on the SD standard A peripheral...
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The present invention relates to a memory card control method and system. The method is applied to a central processing unit, including: when the central processing unit runs the file system, mounts the initialized memory card in the file system; when the file system receives For the read operation of the memory card, the central processing unit controls the first controller to read data from the memory card and output it to the second controller; the second controller writes the received data into the memory space; the central processing unit responds to The data verification instruction uses the data received by the second controller from the first controller as the first data; uses the preset read-write tool to read the data from the preset address of the memory card as the second data; compare The first data and the second data are used to verify the correctness of the data written into the memory space according to the comparison result, so as to achieve the technical effect of improving the security and accuracy of the memory card startup and data transmission process.
Description
technical field [0001] The present invention relates to the technical field of memory cards, in particular to a method and system for controlling memory cards. Background technique [0002] Memory cards are widely used in portable devices such as digital cameras, personal digital assistants, and multimedia players. [0003] At present, if it is necessary to quickly start the memory card and realize the automatic transfer and verification of the data in the memory card, a lot of memory resources will be consumed. In particular, in the case of limited memory resources, it is easy to reduce the real-time performance of the system. Moreover, it may also cause the memory card to fail to mount or lose data during the startup process. Contents of the invention [0004] The object of the present invention is to propose a memory card control method and system to achieve the technical effect of improving the safety and accuracy of the memory card startup and data transmission proc...
Claims
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IPC IPC(8): G06F12/06G06F13/28G06F13/40G06F9/30
CPCG06F9/30098G06F12/0646G06F13/282G06F13/40
Inventor 赵志文
Owner INTEWELL (GUANGZHOU) SOFEWARE TECH CO LTD