Patent ID: 7304589

Claim:
A vehicle-to-vehicle communication device installed on a subject vehicle and organized with one or more vehicle-to-vehicle communication devices as a system, the vehicle-to-vehicle communication device comprising: a detection means for detecting first information of the subject vehicle and each of surrounding vehicles around the subject vehicle; a communication means for receiving second information of surrounding vehicles from another vehicle-to-vehicle communication device; a report means for reporting various kinds of information; a signal-processing means for processing the first information of the subject vehicle and of the another communication device and for making the report means report the information of the subject vehicle and each of the surrounding vehicles; and a map data retrieval means for retrieving map data; wherein the detection means detects information of positions of the subject vehicle and each of the surrounding vehicles, wherein the report means includes a display means for displaying the various kinds of information as an image, wherein the signal-processing means processes and determines the position of the subject vehicle and the positions of each of the surrounding vehicles based on the information from the detection means of the vehicle-to-vehicle communication devices on the subject vehicle and other vehicles, wherein the signal-processing means controls the display means to display representation of the subject vehicle and each of the surrounding vehicles in an image of the map data when the image is processed by the signal-processing means with the map data retrieved by the map data retrieval means, and wherein the signal-processing means prioritizes the information of positions of the vehicles from plural information sources, when plural sources are available, with accuracy weighting of the sources in processes of position estimation of the vehicles.