Car navigation systems do not consist only of navigation functions, which are a combination of GPS and map. Modern car navigation systems are an integrated system which mainly consists of navigation function, audio and video function and communication function.
We are developing a car navigation system that has various functions and connects various devices as well as future car navigation systems. First, our development contains the basic knowledge of car navigation system by tracing the history of car navigation system and its architecture. These explanations provide insight into the main hardware and software components of car navigation systems. In addition, by explaining the architecture of a Portable Navigation Device (PND), it shows the characteristics of a PND. Secondly, we develop the main software components of car navigation systems, namely navigation function, audio and video function and communication function.
The improvement of navigation functions seems to be slowing down, but there is still considerable room for growth due to network connectivity. Voice recognition and speech synthesis, also in development, will become more attractive features if linked to the network. In-car navigation systems are designed to connect various devices, such as smartphones, portable audio devices, cameras, rear monitor and ITS devices.