Development Navigation in Car

Since the early development navigation has been indexed to the current position of the vehicle using only self-contained, and it took a fine adjustment of the direction of travel at a certain point after the start running. In addition, the information of the moving distance by detecting the rotation of the wheel, does not reflect any actual movement in and car ferry time, there is a need to re-set the landing time. Also, in a manner that rely solely on radio navigation of GPS, and that the security of the operation also had not been error in the location information is not provided only up to about 100m in private for reasons of military of the United States at the time, of the tunnel, etc. there is a problem that can not be used and the first place where radio waves do not reach. However, in the GPS system, so that the obtained position information as long as the place where radio waves can reach even when traveling by train or ship.

Was first popular in Japan car navigation products for consumer. By the time the car navigation consumer began to appear, the autonomous navigation based on the sensors, and its own radio navigation based on GPS are combined, is read as necessary road map information recorded in the CD-ROM Furthermore, the vehicle and by matching the information on the travel route, method of map matching that identifies the vehicle position accurately were also taken. Then, map information came to be also adopted a larger storage capacity of DVD, the opening of the high-precision service and attention to the stable operation of US-made GPS satellites, such as integration with the car stereo or set of automotive TV receiver there is also such, I began to spread in earnest. Then, the resulting product to traffic information and ideas to further enhance the position accuracy by "differential GPS", and regulatory information and congestion information road traffic information communication system according to (VICS) has also become common.

In recent years, and products that you can update the maps and information products and the expansion of speed and storage capacity of the operation is achieved by mounting the Flash SSD and instead HDD to DVD, in the communication function telematics by [9], one-segment TV products were fused with digital equipment receiver, digital audio players, such as the Internet connection has also appeared.