초록 ▼

A vehicle navigation apparatus displays a map on a display screen by using detailed map information. The apparatus displays map information at a plurality of scale, or zoom, levels. The apparatus selectively displays or does not display any given road based on both display scale and the importance,

A vehicle navigation apparatus displays a map on a display screen by using detailed map information. The apparatus displays map information at a plurality of scale, or zoom, levels. The apparatus selectively displays or does not display any given road based on both display scale and the importance, or priority, of the road. The apparatus displays names of municipalities, counties, states, and the like, depending on display scale. The apparatus displays adjacent municipalities, counties, states, and the like in different colors, depending on display scale. The apparatus displays municipalities using generic icons, icons of varying sizes, and icons of varying shapes, depending on municipality size, regional geography, and display scale. The apparatus may display point-of-interest icons in rural areas, depending on regional geography and display scale, and may shift their display locations to accommodate displaying more important information. The apparatus displays roads of relatively lower priority in rural areas, depending on regional geography and display scale, and may display them in a different visual style to distinguish them. The apparatus accepts user input that can affect whether to display names, various icons, and/or roads of various priorities. A method governs the operation of the apparatus.

대표청구항 ▼

A vehicle navigation apparatus displays a map on a display screen by using detailed map information. The apparatus displays map information at a plurality of scale, or zoom, levels. The apparatus selectively displays or does not display any given road based on both display scale and the importance,

A vehicle navigation apparatus displays a map on a display screen by using detailed map information. The apparatus displays map information at a plurality of scale, or zoom, levels. The apparatus selectively displays or does not display any given road based on both display scale and the importance, or priority, of the road. The apparatus displays names of municipalities, counties, states, and the like, depending on display scale. The apparatus displays adjacent municipalities, counties, states, and the like in different colors, depending on display scale. The apparatus displays municipalities using generic icons, icons of varying sizes, and icons of varying shapes, depending on municipality size, regional geography, and display scale. The apparatus may display point-of-interest icons in rural areas, depending on regional geography and display scale, and may shift their display locations to accommodate displaying more important information. The apparatus displays roads of relatively lower priority in rural areas, depending on regional geography and display scale, and may display them in a different visual style to distinguish them. The apparatus accepts user input that can affect whether to display names, various icons, and/or roads of various priorities. A method governs the operation of the apparatus. on from synchronized traffic flow to free traffic flow is deduced if average traffic velocity exceeds a predefinable velocity threshold value or rises above a predefinable velocity threshold value by more than a predefinable degree. 6. The method for monitoring traffic states in a road system, in particular according to claim 1, wherein: after wide moving traffic jams has been detected, change therein is predicted by continuously estimating time-dependent positions of at least one of the upstream edge of the wide moving traffic jams and the downstream edge of the wide moving traffic jams respectively, in accordance with the relationships where (i) qminis traffic flow in the wide moving traffic jams and ρmaxis the traffic density in the wide moving traffic jams, (ii) t0is a time at which the upstream edge of wide moving traffic jams at a location is detected or predicted, (iii) t1is a time at which the downstream edge of wide moving traffic jams at a location is detected or predicted, (iv) qoutand ρminare flow or traffic density downstream of the wide moving traffic jams and (v) q0and r0are flow or traffic density upstream of the wide moving traffic jams. 7. The method according to claim 6, wherein: velocities for at least one of the downstream and upstream edges of the wide moving traffic jams are estimated in advance, starting from a time t(k) or t(m) in accordance with the following relationships: from recorded traffic state data, Δt being a prediction cycle time which is to be validated and k or m being the number of executed monitoring cycles which have been ta