Abstract: A storage part of an on-vehicle apparatus stores simplified map data of which content is simplified as compared to original map data used for route guidance. An image generator of the on-vehicle apparatus retrieves the simplified map data stored on the storage part and generates a map image based on the simplified map data. Then a transmitter of the on-vehicle apparatus transmits the map image generated by the image generator to a portable device, in response to a demand from the portable device.

Abstract: An in-vehicle apparatus links up with a mobile device that executes an application. A memory of the in-vehicle apparatus stores acoustic data of a sound relevant to the application, and a receiver receives a direction signal transmitted from the mobile device at a timing specified by the application. An output part of the in-vehicle apparatus outputs the sound based on the acoustic data stored in the memory via a speaker in response to the direction signal received by the receiver.

Abstract: An in-vehicle apparatus links up with a mobile device that executes an application. A memory of the in-vehicle apparatus stores acoustic data of a sound relevant to the application, and a receiver receives a direction signal transmitted from the mobile device at a timing specified by the application. An output part of the in-vehicle apparatus outputs the sound based on the acoustic data stored in the memory via a speaker in response to the direction signal received by the receiver.

Abstract: A storage part of an on-vehicle apparatus stores simplified map data of which content is simplified as compared to original map data used for route guidance. An image generator of the on-vehicle apparatus retrieves the simplified map data stored on the storage part and generates a map image based on the simplified map data. Then a transmitter of the on-vehicle apparatus transmits the map image generated by the image generator to a portable device, in response to a demand from the portable device.

Abstract: A program update device includes: a first storage unit to retain a program of a first version; a second storage unit to retain a program of a second version equal to or later than the first version; an acquiring unit to acquire a difference between the program of the second version and a program of a third version later than the second version; and an update unit to generate the program of the third version from the program of the second version that is stored in the second storage unit and the difference acquired by the acquiring unit, and to store the generated program of the third version in the first storage unit.