Data write method for improving service life of data storage equipment
A storage device and data writing technology, which is applied in the computer field, can solve the problems of short service life of storage devices and uneven reading and writing areas, and achieve the effect of avoiding frequent partial reading and writing
Active Publication Date: 2013-03-06
SHENZHEN STREAMING VIDEO TECH
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Problems solved by technology
[0003] In view of this, the present invention is to provide a data writing method that prolongs the service life of the data storage device, so as to solve the problem of short service life of the storage device due to uneven read and write areas in the process of writing video data by the above-mentioned video recording system
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[0020] In order to clearly illustrate the solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.
[0021] see figure 1 ,include:
[0022] Step 11: setting information units corresponding to each data block in the storage device on the non-volatile memory;
[0023] The structure of the information unit is as figure 1 As shown, the information area of the file system stored in the device is divided into several information units (cells), and each unit represents the occupancy of a data block corresponding to the storage device, such as an SD card or a CF card. If each unit is composed of n bits, the occupancy of the state identification data block and the size information of the data block are respectively defined. For example, an example with 2 bits is as follows:
[0024] 00: not occupied
[0025] 01: Recording data with invalid alarm signal
[0026] 10: Video data wit...
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The invention discloses a data write method for improving the service life of data storage equipment, which includes the following steps: setting information units corresponding to the data blocks in the storage equipment on a nonvolatile memory; circularly searching the data blocks used for writing data in sequence on the information units of the nonvolatile memory; and according to the sequence of the information units, writing the record data to the corresponding data blocks in sequence, setting attributes in all the information units, which indicate that whether the corresponding data blocks are empty and whether the data blocks have invalid record data or have valid record data, judging the attributes of the information units corresponding to the data blocks to which the record data is to be written, and if the attributes indicate that the corresponding data blocks have valid data, sending out alarm information to the user. The nonvolatile memory is an Fram or EPROM and the storage equipment is an SD card or CF card. Through the method, the record data are sequentially stored in the data blocks and the data blocks evenly store the record data, thus avoiding the problem of service life reduction of the storage equipment caused by frequency data read and write operations.
Description
technical field [0001] The invention relates to the technical field of computers, in particular to a data writing method for prolonging the service life of a data storage device. Background technique [0002] In the security system, the biggest problem faced by the video recording system based on the general storage device is the life of the storage device. Since the write times of some storage devices are limited, for example: SD card is based on the FLASH structure, and its write times are limited, so only by reducing the average number of write operations to each sector of the storage device can the extension be extended. The lifespan of the storage device. At present, general video recording systems use common file systems such as FAT32 to store video data. For a general-purpose file system, its access frequency to each area in the storage device is very uneven, and the number of times its information area is erased and rewritten is very frequent, and this is the key f...
Claims
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IPC IPC(8): G06F12/06G06F17/30H04N5/76
Inventor 赵彩智
Owner SHENZHEN STREAMING VIDEO TECH