TWI264678B - Control device adapted to flash memory card and method for constructing the same - Google Patents

Control device adapted to flash memory card and method for constructing the same

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Publication number
TWI264678B
TWI264678B TW90121574A TW90121574A TWI264678B TW I264678 B TWI264678 B TW I264678B TW 90121574 A TW90121574 A TW 90121574A TW 90121574 A TW90121574 A TW 90121574A TW I264678 B TWI264678 B TW I264678B
Authority
TW
Taiwan
Prior art keywords
control device
pba
flash memory
fat
mapping
Prior art date
Application number
TW90121574A
Other languages
Chinese (zh)
Inventor
Jen-Nan Lai
Tsai-Jin Jeng
Shang-Jin Jian
Chuan-Sheng Lin
Original Assignee
Key Technology Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Key Technology Corp filed Critical Key Technology Corp
Priority to TW90121574A priority Critical patent/TWI264678B/en
Application granted granted Critical
Publication of TWI264678B publication Critical patent/TWI264678B/en

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Abstract

This invention relates to a control device adapted to a flash memory card, in particular, a control device the a method for constructing the control device which is compatible to smart media memory cards, memory stick card, and NAND type flash memory with various capacities. After booting the control device and completing sequential scanning to the physical block address (PBA) of each data sector in the memory card, the control device would scheme and divide the memory card into a plurality of partitions according to the capacity of the mapping table of each PBA sector therein, and uses another FAT mapping table in the control device to serve as the mapping for recording the logic address of the FAT in the operation system. When the computer host intends to access the files, the mapping table of the PBA sectors can serve as the mapping of the data sectors in the partitions, and the FAT mapping table would provide quick indexing of the PBA while updating the FAT sectors in cooperation with the operation system, so as to be compatible with flash memory cards of various memory capacity and effectively control the sizes of the mapping tables as needed for maintaining the reading and writing efficiency of the operation system.
TW90121574A 2001-08-31 2001-08-31 Control device adapted to flash memory card and method for constructing the same TWI264678B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW90121574A TWI264678B (en) 2001-08-31 2001-08-31 Control device adapted to flash memory card and method for constructing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW90121574A TWI264678B (en) 2001-08-31 2001-08-31 Control device adapted to flash memory card and method for constructing the same

Publications (1)

Publication Number Publication Date
TWI264678B true TWI264678B (en) 2006-10-21

Family

ID=37969437

Family Applications (1)

Application Number Title Priority Date Filing Date
TW90121574A TWI264678B (en) 2001-08-31 2001-08-31 Control device adapted to flash memory card and method for constructing the same

Country Status (1)

Country Link
TW (1) TWI264678B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI385357B (en) * 2008-11-14 2013-02-11 Cheng Uei Prec Ind Co Ltd Measured data managing system and managing method thereof
CN109521944A (en) * 2017-09-18 2019-03-26 慧荣科技股份有限公司 data storage device and data storage method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI385357B (en) * 2008-11-14 2013-02-11 Cheng Uei Prec Ind Co Ltd Measured data managing system and managing method thereof
CN109521944A (en) * 2017-09-18 2019-03-26 慧荣科技股份有限公司 data storage device and data storage method

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