Multi-group fixed length data circulation access method

A cyclic access, fixed-length data technology, applied in the direction of memory address/allocation/relocation, etc., can solve the problem of memory space division and multi-packet data storage optimization, and achieve the effect of automatic management and fast access.

Active Publication Date: 2015-07-22
中图科信数智技术(北京)有限公司
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Problems solved by technology

Memory space partitioning is also not optimized for multipacket data storage

Method used

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  • Multi-group fixed length data circulation access method

Examples

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Embodiment 1

[0054] The present invention uses 4MB Flash memory W25Q32 as the storage medium, the memory address ranges from 000000h to 3FFFFFh, each sector is 4KB, and there are 1024 sectors in total. Suppose the first sector is the address search area, and the reserved data search area is the second sector to the fourth sector, a total of three sectors. The data retrieval area in the data retrieval area uses 4 bytes for the status word, 1 byte for the group number, 2 bytes for the storage block number, 1 byte for the data length, 4 bytes for the start address, and the number of records Use four bytes. Excluding the data retrieval area and the sectors reserved for the data retrieval area, a total of 1020 sectors are used for data storage. Assuming that the number of data packets N=4, the memory block M=(1024-1-3) / 4=255. The storage blocks are arranged in physical order. Group i is first stored in the storage space of group i in storage block 1, and when the storage is full, the storage ...

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Abstract

The invention discloses a multi-group fixed length data circulation access method. A storage medium is divided into three parts including a data index area, a reserved data index area and a data storage area. Grouping serial numbers, storage block serial numbers, the fixed data length, the starting address and the recording number of each group record are stored in the data index area. When the record of the data index area reaches a threshold value, the reserved data index area is started for replacing the data index area. In the data storage area, data of various groups are sequentially stored in the mode of corresponding to the group serial numbers according to the section sequence. After corresponding storage space in a storage block is filled with certain grouping data, the new address in the next storage block is obtained for storing the data. When the last storage block is filled with the data, through addressing calculation, a new storage address is located in the storage space corresponding to the first storage block, and the new data are continuously stored after original data are wiped. When the data are read, addressing of bytes one by one can be carried out according to the starting address, and the current data information is read.

Description

Technical field [0001] The invention relates to digital signal processing technology, in particular to a multi-packet fixed-length data cyclic access method. Background technique [0002] With the continuous development and progress of digital signal processing technology, electronic measurement technology, and semiconductor manufacturing technology, multi-signal fusion processing methods are gradually being promoted and applied. This has led to the increasing amount of digital storage in the multi-signal fusion application system, and more and more types of stored data. These data need to be accessed frequently during data processing, so multi-packet data storage management is required. . Aiming at this problem, the present invention proposes a multi-packet fixed-length data cyclic access method, which not only realizes the automatic management of data storage space, but also facilitates the access of multi-packet data. The method designed by the present invention is especiall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/06
Inventor 胡圣尧关静杨子立张兵
Owner 中图科信数智技术(北京)有限公司
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