Vehicle-mounted mobile multimedia system refers to the multimedia system embedded and installed in the mobile environment of the car. It mainly includes car navigation system, driving recorder, car mobile communication system, in-car and reversing monitoring system, car entertainment system, etc. Domestic in-vehicle mobile multimedia systems have gone from immature to gradual improvement, until some categories of products have led the world. After nearly two decades of difficult development, during this period, they have not only the wisdom and efforts of domestic automakers, but also the domestic The inevitable result of the rapid development of the automotive aftermarket. With the penetration of electronic information technology into the automotive electronics field with unprecedented depth and breadth, the development trend of in-vehicle mobile multimedia systems towards networking, multimedia and intelligence is becoming more and more obvious. . At the same time, the new regulations issued by the Ministry of Transport of the People's Republic of China at an appropriate time will also promote the development of domestic mobile multimedia systems to a new level. New trends in technology and appearance Large screen visualization In the field of mid-to-high-end automobile manufacturing, in-vehicle multimedia systems have become a very effective means for many car manufacturers to highlight the differentiation of their products in the fierce competition. As far as the display is concerned, its development trend is growing. At present, the 5 "display screen has become the standard configuration of mini cars, and the 7" screen will soon become the mainstream configuration. In high-end cars, 10 "and above car displays will appear. With the help of embedded processors, the performance is rapidly improved. The definition of the monitor is getting higher and higher, and the colors of the navigation system are becoming more and more rich. In the future, three-dimensional landscape displays or urban traffic maps can be displayed on the monitor from different angles. With the support of multimedia system control software , You can also use laser projection and windshield display technology to project the vehicle's driving information onto the windshield in front of the driver. Intelligent voice intercom With the application of Freescale's i.MX516 multimedia application processor and S12XEP100 microcontroller (MCU) in the Ford SYN car voice operating system, the vehicle first understood the voice operation instructions issued by people. Whether the Ford SYN is a destination command issued by a phone, radio or navigation system, these vocabulary words can become commands of the voice operating system. Whether you speak German, English, French, Italian, Spanish or Dutch, it can be recognized. Speech synthesis technology is also used in Mercedes-Benz C-Class cars to ensure that it can repeat important instructions about driving directions issued by car drivers, or read SMS text messages aloud. In 2012, the domestic Tianyuan company also launched the "Smart Driving Cloud" voice navigation platform product, which combines voice control with cloud computing background, 3G, and Internet of Vehicles content customization to achieve a fully intelligent control service without manual response from the background. The driver no longer needs to worry about frequently touching the screen with his hands to affect the control steering wheel, avoiding potential safety hazards, and liberating the driver's hands-only using sound to touch the DVD navigation entertainment system, realizing voice navigation and voice On-demand songs, making phone calls, searching stocks, weather and other information and information, conducting early warning and rescue, remote services, etc. It is expected that the commercial application of voice technology and Internet of Vehicles will become the mainstream and trend of in-vehicle multimedia terminals. Multifunctional integration There are many types of mobile multimedia systems on the market, each with its own advantages. The main functions are relatively simple and present a modular feature, or the main function is navigation, or highlight the infotainment function, users need multiple components to complete. Shanghai Chenhan Electronics understands the market trends, and develops multi-functional in-vehicle intelligent terminals based on the requirements of the national standard GB-T19056-2003 / National Ministry of Transportation and Industry Standards based on Freescale i.MX536 as the platform. The terminal integrates digital video compression storage and 3G wireless transmission technology (Digital Video Record), combined with GPS positioning monitoring, car driving recorder, SD card mass storage, driver IC card identification, bus stop report, multi-channel data interface , Car Bluetooth hands-free voice call function, reversing monitoring, WIFI hotspot, car MP3 / MP4 with more comfortable passenger entertainment, car audio and video, car power amplifier. 3G video transmission technology, dual stream transmission, adjustable rate, faster transmission, clearer and smoother video. Through WCDMA or CDMA can upload snapshots and alarm pictures. Realize real-time monitoring of moving targets, real-time transmission of monitoring video and images. Using H.264 video compression technology, the image resolution is D1, Half, D1 or CIF optional. The system's built-in multimedia driving record analysis software can realize 4-channel image synchronous playback, conditional playback, clip storage, character overlay, geographic information and driving record overlay, event analysis and record extraction functions. The embedded structure design is installed according to the vehicle standard. The integrated structure greatly compresses the product volume and expands the performance of the product, which is in line with the future development trend of the in-vehicle multimedia system All in one. New trends in system standards and markets Industrialization of scale and standardization of standards With the rapid development of the domestic automotive and automotive electronics industry, the mobile multimedia market will become a new economic growth point for China's automotive electronics industry, and gradually form a unique industrial field of automotive electronics. Next, the in-vehicle mobile multimedia system is bound to achieve industrialization, and then form an in-vehicle mobile media application information industry group with independent intellectual property rights, which is very necessary and urgent. The next step is the standardization and specialization of the in-vehicle mobile multimedia system industry and the construction of information infrastructure, which is a new issue facing the development of industrialization. With the maturity of related technologies and the mastering of core technologies, the clarity of the relevant policies of vehicle-mounted mobile multimedia systems and the standardization of systems have become inevitable requirements. If each manufacturing enterprise has only mastered part of the technology, it not only lacks competitiveness, but also cannot promote the development of China's infrastructure and related products supporting the large-scale application of vehicle-mounted mobile multimedia systems. Through the formulation of relevant specifications for vehicle mobile multimedia systems, a sound product R & D system is formulated, and the supporting software and hardware product standards and regulations suitable for China's vehicle mobile multimedia systems are introduced to meet the market's requirements for product quality and standardization and enhance competitiveness. Market concentration The development of the domestic vehicle mobile multimedia market is already on the track of "market concentration". The concept of market concentration includes: concentration of industry brand companies, concentration of product quality, and concentration of channels. The specific market competition pattern of "market concentration" is the result of the joint cultivation of each industry through primitive natural competition, chaotic market situation, industry self-regulation and national legalization of the business environment. The current background of the industry is currently in the "market concentration". After experiencing the so-called "cottage" movement under China's special national conditions and market conditions, it will surely spawn a group of domestic excellent enterprises and brands of mobile multimedia. The continuous concentration of branded enterprises is the result of natural selection of the market and the active promotion of enterprises. The big Evergrande is not only an eternal law in shopping malls, but also a result of consumer choice. Consumers will eventually throw the olive branch of trust to a brand enterprise that can operate for a long time to ensure that electronic products can grow with their own consumption and provide after-sales service for the products they buy. The concentration of brand enterprises has also synchronized the quality of products. In the automotive mobile multimedia market, it is normal for large manufacturers to maintain stable product quality, and the products of many small enterprises or cottage factories often suffer from unstable product quality due to insufficient resource systems, R & D, and production. The concentration and smoothness of channel sales channels are the result of continuous optimization of large brand enterprises to gather capital, brand operations, channel resources and promotion, and establish and improve a wide range of terminal outlets to make sales channels smoother. In-vehicle multimedia applications are about to form an industry in China to meet the rising market demands of domestic and foreign markets. At present, the industry is still in the stage of eliminating weak and introducing new standards. In the next few years, the automotive multimedia audio-visual electronics market will usher in a huge change from enterprise development, product upgrades and the operation of market channels. The market pattern guided by industry “oligarchs†will become increasingly clear. Great direction. Aspiring mobile multimedia companies should fully prepare and promote it. Featured by flat surface with measurement 11.5mm width by 21mm height, side bend. 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