What is Car Ethernet Vehicle Router,Vehicle 4G Router,Vehicle 4G Wireless Router,Vehicle Wifi Router Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommtech.com
Mainstream smart TV operating system II: Windows operating system
The operating system commonly used in smart TVs is also the Windows system. Because of its large user base and strong compatibility, it is currently the world's most mainstream operating system, and is also widely used by color TV manufacturers in new smart 3D TVs. Changhong and other smart TVs The main use of the Android system, foreign brands use the Windows operating system; TCL also uses the Android + and Windows dual system.
The Windows system's smart TV has accumulated a large number of the latest technology applications. The CPU is very powerful. It can convert all PC applications into a perfect TV experience. The charm is that no system can compare.
Mainstream Smart TV Operating System III: Tizen System (Next Generation Smart TV System)
On September 28, 2011, Intel and Samsung announced that they will cooperate to create a new Linux-based open source operating system, Tizen, an open source, standardized Linux-based operating system. In addition to supporting HTML5 and WAC-based applications, the operating system Tizen can also be widely used in various devices, including smart phones, tablet computers, smart TVs, notebook computers, and driving entertainment systems.
Mainstream Smart TV Operating System IV: Domestic Brand Self-Building System
Some home-made TV brands, including Skyworth and Konka, have launched their own smart TV systems, especially the Skyworth Tianci system (based on LINUX system development), which is the most prominent and independent, compatible, and complete. The four characteristics of sex and continuity can be fully compatible with the Android platform applications, to achieve multi-platform, multi-task operation, and can automatically brush machine, continuous upgrade.
In addition to the above several smart TV operating systems, the future smart TVs will use the TVOS operating system invested by SARFT.
The TVOS system aims to standardize the current smart TV market, strengthen the content security audit, facilitate the SARFT supervision, and avoid operating systems with illegal content.
Up to now, major TV manufacturers in China have not stated their position on the release of the TVOS 1.0 system of SARFT. In fact, the current TVOS1.0 system from the release to the formal commercial, I believe it will take some time. However, according to industry sources, the SARFT is currently communicating with some companies to explain the TVOS 1.0 system. In fact, the TVOS 1.0 system developed by the General Administration of Press, Publication, Radio, Film and Television, the starting point is still very good, but the real implementation, there are still many difficulties.
In the future, in the field of smart TVs, are we using the TVOS system developed by the SARFT, or the TIZEN system, or an operating system independently developed by other manufacturers? No one knows, but what is currently certain is that the smart TV based on the Android operating system can be used. More playful, it is worth considering.
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, etc. on TV boxes, smart TVs, smart TV software, etc. Answering questions.
Car Ethernet is a new local area network technology that uses Ethernet to connect the electronic unit in the car. Unlike traditional Ethernet, which uses 4 unshielded twisted pair cables, car Ethernet can achieve a transmission rate of 100Mbit/s or even 1Gbit/s on a single pair of unshielded twisted pair cables. At the same time, it also meets the requirements of the automotive industry for high reliability, low electromagnetic radiation, low power consumption, bandwidth allocation, low latency and synchronous real-time. The physical layer of on-board Ethernet uses BroadRReach technology, and BroadR-Reach's physical layer (PHY) technology has been standardized by the One-pair Ethernet Alliance (OPEN). Therefore, it is sometimes called Broad RReach (BRR) or OABR (Open Alliance BroadR-Reach). The MAC layer of vehicle Ethernet adopts the IEEE 802.3 interface standard and seamlessly supports widely used high-level network protocols (such as TCP/IP) without any adaptation.
On-board Ethernet protocol architecture
Vehicle-borne Ethernet and its supported upper-layer protocol architecture are shown in Figure 1. Vehicle-borne Ethernet mainly involves OSI layer 1 and Layer 2 technologies, while vehicle-borne Ethernet also supports AVB, TCP/IP, DOIP, SOME/IP and other protocols or application forms.
On-board Ethernet framework
Among them, AVB is an extension of traditional Ethernet functions, which enhances the real-time performance of traditional Ethernet audio and video transmission by adding precise clock synchronization, bandwidth reservation and other protocols, and is a network audio and video real-time transmission technology with great development potential. SOME/IP (Scalable Service-Oriented MiddlewarE on IP) specifies the video communication interface requirements for vehicle camera applications, which can be applied to the field of vehicle cameras, and realizes the mode control of driver assistance cameras through apis.
As an extension of AVB protocol, Time-Sensitive Networking (TSN) introduces related technologies of time-triggered Ethernet, which can efficiently realize the transmission of automotive control information. In addition, the on-board Ethernet of the 1Gbit communication standard also supports Power Over Ethernet (POE) function and Energy-Efficient Ethernet (EEE) function. The POE function provides power for connected terminal devices while transmitting data through twisted pair cables, eliminating the need to connect external power cables to terminals and reducing the complexity of power supply.
On-board Ethernet standardization
In terms of in-vehicle Ethernet standardization, the IEEE802.3 and IEEE802.1 working groups, AUTOSAR, the OPEN Alliance and the AVnu Alliance have played a major role in promoting it.
The IEEE802.3 local area network standard represents the mainstream Ethernet standard in the industry, and the on-board Ethernet technology is developed on the basis of IEEE802.3, so the IEEE is currently the most important international standardization body for on-board Ethernet. In order to meet the requirements of the car, it involves the development of a number of new specifications and the revision of the original specifications within the two working groups of IEEE802 and 802.1, including PHY specifications, AVB specifications, and single-wire to data line power supply. In addition, AVB related to AV transmission, timing synchronization and other specifications also need to be standardized by other technical committees of IEEE, such as IEEE1722 and IEEE1588.
OPEN Alliance
The OPEN Industry Alliance was launched in November 2011 by Broadcom, NXP, and BMW to promote the application of Ethernet-based technology standards to in-car connectivity. The main standardization goal is to develop a 100Mbit/s BroadR-R physical layer standard and develop OPEN interoperability requirements.
AUTOSAR
AUTOSAR is a consortium of automotive manufacturers, suppliers, and tool developers that aims to develop an open, standardized automotive software architecture, and the AUTOSAR specification already includes the automotive TCP/UDP/IP protocol stack.
AVnu
The AVnu Alliance was formed by Broadcom in collaboration with Cisco, Harman and Intel to promote the IEEE 802.1 AVB standard and the Time Synchronization Network (TSN) standard, establish a certification system, and address important technical and performance issues such as precise timing, real-time synchronization, bandwidth reservation, and traffic shaping.
Smart TVs have slowly entered everyone’s home and become an indispensable part of life. However, when buying smart TVs, everyone should not be confused by appearances. They should also understand the operating system in order to lay a foundation for better TV watching in the future. , Xiao Bian today shared four sets of smart TV operating system introduced information, we might as well understand! At present, the Android operating system is the mainstream choice for smart TVs. TV manufacturers such as TCL, Konka, Skyworth, and Sony have all launched Android smart TVs. Since the Android operating system is a fully open platform, software developers can easily develop various program applications and create a large amount of application content.
Mainstream smart TV operating system 1: Android operating system (mainstream)