| 摘要 |
A vehicle navigation device, comprising a bus whereto there are connected a control unit, a storage memory in which road map data is stored, a reproduction unit and a map element selector, which map element selector is suitable for selecting map elements from the road map data, which reproduction unit comprises a picture memory, a data input of which is connected to the storage memory and to a character generator, a data output thereof being connected, via a colour look-up table memory, to a display screen on which road maps to be selected can be displayed in colour, which control unit comprises a picture composition unit which is suitable for loading a road map selected from the road map data into the picture memory, which road map represents an area around a map element to be selected, and for loading a name, generated for the selected map element by the character generator, into a predetermined segment of said picture memory. The picture composition unit is also suitable for superposing a pattern, for display according to a predetermined representation standard, on that data which represents the selected map element, and for superposing said pattern on either said segment or the generated name, which predetermined representation standard is distinct from the standards used for displaying the other map elements. |
