Abstract: A map creation device includes a simple-ground-information creating unit, an on-ground-structure-information creating unit, and a map-information creating unit. The simple-ground-information creating unit creates, based on the ground object, a simple ground object expressing the three-dimensional shape with less amount of data than the ground object. The on-ground-structure-information creating unit creates, based on the simple ground object, an on-ground-structure object expressing a three-dimensional shape of an on-ground structure that is present on a surface of the ground by adding height information to a two-dimensional on-ground-structure object expressing a two-dimensional shape of the on-ground structure. The map-information creating unit creates map information in which the on-ground-structure object is superimposed on the ground object.

Abstract: A ground object is arranged so that it overlaps with a cylindrical object. Inside the cylindrical object, foot data of the ground object is arranged. Since the foot data on the side of a fore-end opening is positioned behind a fore-end face object with respect to view point coordinates, hidden surface removal is carried out for an image of the foot data on the side of the fore-end opening viewed from the view point coordinates by a Z value of a transparent drawn image of the fore-end face object.

Abstract: A processor 300 of a navigation device 200 operates a response voice analyzer of a process status setting unit to acquire a destination-responding voice collected by a microphone 230. Then, the processor 300 operates the state setting controller of the process state setting unit to identify a user of a vehicle based on the destination-responding voice and to set a navigation processor and a music reproducing unit so as to perform processes in accordance with the identified user.

Abstract: A display apparatus configured to add variations to displayed contents to prevent the user from getting bored and sufficiently utilize the characteristics of a display panel such as an organic EL display panel which excels in displaying a moving image. The display apparatus is suitable for use in an electronic equipment, and comprises a display panel for displaying images, a storage unit contained in the electronic equipment for storing display data representative of display images for display on the display panel, and a writing unit for writing display data into the storage device from the outside. In one embodiment, a device body is provided with a rewritable memory such as a flash memory to provide an environment in which previously provided data can be captured through the Internet, or images created by the user can be uniquely captured.