Control device suitable to quick flash memory card and its construction methods

A control device and memory card technology, applied in the direction of memory address/allocation/relocation, etc., can solve the problems of incompatibility with higher-capacity data storage devices, waste of mapping table memory capacity utilization, limited mapping table memory capacity, etc. Achieve the effect of saving operation time, infinitely expanding compatibility, and controlling cost expenditure

Inactive Publication Date: 2003-10-08
KII TEKU INC
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  • Abstract
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Problems solved by technology

[0006] 1. Data storage devices such as Smart Media memory card, Memory Stick memory card, or NAND flash memory all use the data block (Block) as the basic unit for erasing or storing data. With the increase of memory capacity, The number of its data blocks also increases accordingly, but the memory capacity of the mapping table is limited, so it cannot be compatible with higher-capacity data storage devices used in subsequent updates (because subsequent memory cards require larger memory) ;
[0007] 2. If high-capacity flash memory cards are required, the random ac

Method used

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  • Control device suitable to quick flash memory card and its construction methods
  • Control device suitable to quick flash memory card and its construction methods
  • Control device suitable to quick flash memory card and its construction methods

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Embodiment Construction

[0044] see image 3 and Figure 4A , are schematic diagrams of the structure of the data storage system and the mapping table of the present invention respectively; at least one data storage device (such as a Smart Media memory card, a Memory Stick memory card, or a NAND flash memory) 31-39 is mainly controlled by a control device 40 and be connected with a computer mainframe 49 (certainly, this control device 40 also can be built in a subsystem of computer host computer 49), comprise a microprocessor 45 in this control device 40, it can be by means of a accord with PCMCIA, IDE, ATA, ATAPI, USB, or a host interface controller 44 of a combined specification agreement and is connected to a host computer 49, and one end of the microprocessor 45 can be connected to the data storage via a storage control logic circuit 46. Devices 31-39; Microprocessor 45 can also be connected with a temporary storage area controller 42, and this temporary storage area controller 42 can control the...

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Abstract

A control device suits for flash memory card and its method features in that after the control device is turned on and finishes scanning PBA one by one of every information block of a memory card, itwill plan and divided the memory card into multiple fragment zones according to the capacity of a fragment PB mapping list, matching with another FAT image appended list in the control device to image the record of FAT logic address. When the host wants to operate on file memory, the fragment PB image list will be the image of information part in the fragment zone and the appended list will cooperate the operation system to provide quick to FAT when renewing.

Description

technical field [0001] The invention relates to a control device applicable to a flash memory card and a construction method thereof. Background technique [0002] The rapid development of the information industry, affected by the faster and faster CPU speed and the rise of IA products, high-speed data storage devices (memory) will also play an extremely important role. [0003] as the first figure 1 Shown in A, is the structure schematic diagram of general data storage system; A data storage device (such as Smart media memory card, Memory Stick memory card, or NAND type flash memory) 1I is mainly by means of a control device 20 and a computer mainframe 29 connection (of course, the control device 20 can also be built in a subsystem of the host computer 29), the control device 20 includes a microprocessor 23, which can be connected by a PCMCIA, ID, ATA, ATAPI, The host interface controller 24 of USB or its combined specification protocol is connected to the host computer 2...

Claims

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Application Information

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IPC IPC(8): G06F12/06
Inventor 赖振楠郑才进简尚进林传生
Owner KII TEKU INC
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