Urban,Intelligent,Transportati car Urban Intelligent Transportation System of information shari
In the shape of the design, the Core wing broke through the traditional appearance of the other models, the Core-wing sense of movement and high-level sense of the high degree of balance, which must be improved, both in the interior styling General Lee: For such a TSP platform, indeed, is the test of the ability to integrate the same time, just She always has been mentioned in the business platform is a completely independent intellectual property platform and our platform is t
Durability data integrity and extend the IC is the most critical storage subsystem considerations. Today's small size SSD to provide a variety of features suitable for these requirements. For example, in order to compensate for random read error may occur when using NAND flash memory, SSD embedded error checking and correction (ECC) circuit, designed to ensure the accuracy of the data entering and leaving the memory. For example,, NANDrive provide the an 8-bit hardware ECC engine.Bad Block Management (Bad-blockmanagement) brought another challenge. NOR flash, design of NANDIC allows a number of bad blocks. In order to manage these defects, the small size SSD initialization firmware-based bad block management function is activated to determine the location of these bad blocks, and maps them to the outside of the storage array. Firmware and then command the controller, it does not use the specified block. When the discovery of additional bad blocks, the firmware update mapping to ensure that these blocks are not used.Write durability constitutes another obstacle to the small size of the SSD used in the automotive market. Flash IC encounter the limitations of the durability of the write operation: after repeated erase and write cycles, memory is no longer retain the data. IC architecture is more complex, the smaller memory cell size, the lower the durability of the IC.For example, single-level cell (single-level-cell, SLC) flash memory device generally provides for 100,000 cycles. Use more complex multi-level cell (multi-levelcell, MLC) architecture devices, the devices commonly used in portable consumer devices such as the current general provisions in 10,000 cycles. The small size of SSD manufacturers have begun to use only for the automotive market SSD SLC flash, in order to mitigate this risk.In addition, the wear leveling function in the firmware of the device can be extended durability. Wear leveling algorithms car dvd and car gps age counter and flash media on the logical and physical sector map matching, which block or page to keep track of memory usage. Age counter is incremented for each write and erase action. These complex algorithms command controller, making it the memory write action to go to the use of smaller blocks, which automatically balance the memory usage. The technique utilizes a flash of all sectors to enable them to achieve at the same time write limit, thereby making the SSD durability to maximizeMore and more intelligent cars, and increasingly intelligent urban transportation systems, and how to achieve information sharing, the biggest challenge to build a car networking. In fact, the vehicle networking is no stranger to car networking concept is characterized by a combination of vision of an automobile and IT - equipped with electronic sensing devices, vehicles with other vehicles, Urban Intelligent Transportation System in a information-sharing platform, enabling to solve a variety of purposes such as urban congestion. Vehicle networking behind the car manufacturers, car terminal enterprises, telecom operators, IT companies, hardware vendors, traffic information content of operators and service providers such as a long list of industry chain. But the chain, why the delay is difficult to build
Urban,Intelligent,Transportati