Analysis of Development Direction of DVR Storage Technology
2024-03-07 06:07:29
DVR emerged in the second phase of the development of video surveillance systems, namely the semi-digital era, and was used to replace analog video recorders. Early security video surveillance used analog monitors and video tape recorders. However, the tapes used in tape recordings were expensive, had a short life, a small capacity, and had poor image quality, which greatly restricted the development of video surveillance. The use of video signal encoding as digital signals is stored on the hard disk, which is far superior to analog monitoring equipment in image processing, storage, retrieval, backup, network transmission, and remote control. The DVR's huge advantage of using digital recording technology has enabled DVR to quickly replace analog video recorders.
The DVR's cost advantage, ease of use, and long-term user base make DVRs that will not disappear from the market for a long period of time, and will continue to have an important share of the market for some time. Below we analyze the development direction of DVR from the aspects of market and technology. From a technical point of view, the DVR has been developed for a long time and has functions such as recording/recording, remote monitoring, and cloud mirror control of the image/voice, and functions such as screen division, alarm control linkage, and network transmission. At present, DVR technology has basically matured and its functions are basically perfect.
1, faster hardware processing, longer storage time
With the development of chip technology, higher-performance CPUs make DVRs faster and more powerful. From the early CIF DVR, to the current D1 DVR, 960H DVR, Hybrid DVR, HD-SDI DVR. In addition, with the trend of high-definition, the demand for storage is also increasing, and DVR hard disk management technology is also improving. Basically, the DVR may support more hard disk interfaces, support RAID technology, and support the compatibility of storage technologies such as DAS, SAN, and NAS.
2, the encoding method is more advanced
The compression technologies used in mainstream DVRs currently on the market include MPEG-4, H.264 and M-JPEG. MPEG-4 and H.264 are the most common compression methods in China, and H.264 has become the mainstream because it is more in line with the requirements of network transmission. In the future, in order to make embedded DVRs more widely applicable, the unification of various algorithms will be the trend of future development. However, such unification is not based on the standards of any domestic company, but requires a wide range of government functional departments and DVR industry chains. On the wide participation of various types of companies. For example, China's own AVS compression algorithm with proprietary intellectual property rights, as well as H.265 compression algorithm, has a revolutionary change in many aspects compared to H.264.
The DVR's cost advantage, ease of use, and long-term user base make DVRs that will not disappear from the market for a long period of time, and will continue to have an important share of the market for some time. Below we analyze the development direction of DVR from the aspects of market and technology. From a technical point of view, the DVR has been developed for a long time and has functions such as recording/recording, remote monitoring, and cloud mirror control of the image/voice, and functions such as screen division, alarm control linkage, and network transmission. At present, DVR technology has basically matured and its functions are basically perfect.
1, faster hardware processing, longer storage time
With the development of chip technology, higher-performance CPUs make DVRs faster and more powerful. From the early CIF DVR, to the current D1 DVR, 960H DVR, Hybrid DVR, HD-SDI DVR. In addition, with the trend of high-definition, the demand for storage is also increasing, and DVR hard disk management technology is also improving. Basically, the DVR may support more hard disk interfaces, support RAID technology, and support the compatibility of storage technologies such as DAS, SAN, and NAS.
2, the encoding method is more advanced
The compression technologies used in mainstream DVRs currently on the market include MPEG-4, H.264 and M-JPEG. MPEG-4 and H.264 are the most common compression methods in China, and H.264 has become the mainstream because it is more in line with the requirements of network transmission. In the future, in order to make embedded DVRs more widely applicable, the unification of various algorithms will be the trend of future development. However, such unification is not based on the standards of any domestic company, but requires a wide range of government functional departments and DVR industry chains. On the wide participation of various types of companies. For example, China's own AVS compression algorithm with proprietary intellectual property rights, as well as H.265 compression algorithm, has a revolutionary change in many aspects compared to H.264.
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