Video monitoring system taking nonvolatile memory as memory

Abstract

A video monitoring system taking a nonvolatile memory as a memory is characterized in that the novel nonvolatile memory is used to replace a flash memory and a dynamic random access memory of the existing video monitoring system; the system has four structure forms. Compared to the existing video monitoring system, the video monitoring system taking the nonvolatile memory as the memory possesses advantages of high security, low power consumption, rapid starting and the like because the nonvolatile memory possesses nonvolatility, a high read-write speed and read frequencies.

Description

technical field [0001] The invention relates to a video monitoring system based on a non-volatile memory as a memory, which is used for improving the performance and safety of the video monitoring system and belongs to the field of video monitoring. Background technique [0002] With the development and progress of society, various industries in society have put forward higher requirements for security measures in practical applications. As a very effective and mature means of security management, the video surveillance system has entered the production and life of the public. However, with the continuous improvement of technology, people's requirements for video surveillance systems have gradually changed from whether there is a video surveillance system to the pursuit of more efficient and safer requirements. [0003] At present, the basic block diagram of the existing video surveillance system on the market is as attached figure 1 As shown, it is mainly composed of the ...

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Problems solved by technology

However, these two kinds of memory have brought some shortcomings to the video surveillance system due to some inherent defects of themselves: 1) DRAM does not possess non-volatility, and needs continuous power supply to keep data information, so when the system unexpectedly crashes When the power is turned on, key data information will be lost, and the security of the system is difficult to be guaranteed

In addition, DRAM uses capacitors for data storage and needs to be refreshed periodically, so it consumes a lot of power

2) Due to the limitation of the read-write speed and the number of read-write times, it is difficult for the flash memory to directly interact with the main control microprocessor, which reduces the fluency of the system itself

The existing video surveillance system uses DRAM(1) to interact with the main control microprocessor, and uses flash memory to solidify the system startup program and source program, so every time the system is started or restarted, these programs need to be read from the flash memory and loaded into DRAM (1) Moderate operation seriously reduces the response time of the system

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