Development direction of vehicle hard disk video recorder
richmor
richmor.net
2017-09-20 12:59:28
The past two years, the Car DVR varieties on the market (car DVR), as the traditional embedded DVR market segments, Car DVR (vehicle hard disk video definition) also ushered in many companies today.
Development direction of vehicle hard disk video recorder.
Car DVR inherited the development direction of network technology, embedded DVR Intelligent Car DVR products, also should have GPS satellite positioning and other functions in accordance with the traffic industry custom function. The past two years, the Car DVR varieties on the market (car DVR), as the traditional embedded DVR market segments, Car DVR also ushered in many companies today. Richmor as a professional manufacturer, we focus on providing customers with the most advanced Hdd for dvr on sale.
Network application requirement analysis
The domestic part of the vehicle monitoring project for wireless network video transmission requirements, such as: 2006 Shenzhen public transportation vehicle monitoring project phase and 2007 Dongguan public transportation vehicle monitoring project phase 4 D1 provides full real-time requirements for video quality, these two projects can also require the digital video collected by the network operator in real time transfer to the command center; in the public security police, bank truck and other special vehicle industry monitoring project for the realization of the emergency remote command also has a lot of demand for wireless video network transmission.
At present, the domestic 3G network only TD-CDMA officially licensed in April 1, 2008, and only in the Olympic Games related to the 8 major urban areas for network coverage, is expected to complete the commercialization of the network, still need 1? 2 years. The other two 3G systems are not licensed, the next 1? Within 2 years, vehicular wireless video network transmission is difficult to apply in 3G network environment. Richmor-China Professional Vehicle video recorder wholesales.
How to achieve the adaptive bandwidth of wireless video network (with the increase and decrease of bandwidth, the change of frame rate and the flow of video) and the quality of network transmission video are the main directions for further research and development of all manufacturers in the future.
Development direction of vehicle hard disk video recorder.
Car DVR inherited the development direction of network technology, embedded DVR Intelligent Car DVR products, also should have GPS satellite positioning and other functions in accordance with the traffic industry custom function. The past two years, the Car DVR varieties on the market (car DVR), as the traditional embedded DVR market segments, Car DVR also ushered in many companies today. Richmor as a professional manufacturer, we focus on providing customers with the most advanced Hdd for dvr on sale.
Network application requirement analysis
The domestic part of the vehicle monitoring project for wireless network video transmission requirements, such as: 2006 Shenzhen public transportation vehicle monitoring project phase and 2007 Dongguan public transportation vehicle monitoring project phase 4 D1 provides full real-time requirements for video quality, these two projects can also require the digital video collected by the network operator in real time transfer to the command center; in the public security police, bank truck and other special vehicle industry monitoring project for the realization of the emergency remote command also has a lot of demand for wireless video network transmission.
At present, China Mobile's EDGE network (GPRS upgrade) coverage is not very high (just in some urban center area coverage). In the existing network, the wireless video network transmission mode with the widest coverage and fast transmission rate is based on the CDMA1X network of China Unicom. The theoretical bandwidth is 153.6kbps, and the measured uplink bandwidth is about 50 60kbps, network transmission can be about 5 frames per second video images in CIF format; and because the CDMA1X network bandwidth changes greatly, so that the quality of Car DVR video network transmission is not very ideal, there is delay, image frame loss phenomenon.
How to achieve the adaptive bandwidth of wireless video network (with the increase and decrease of bandwidth, the change of frame rate and the flow of video) and the quality of network transmission video are the main directions for further research and development of all manufacturers in the future.
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