Showing papers on "Turn-by-turn navigation published in 1986"
TL;DR: In this paper, an algorithm for selecting paths for travel by road is presented based on the principle that ''ease of description is an important consideration in route selection'' and the route description is represented by a frame, and route description cost is approximated by the number of slots in that frame.
Abstract: Automated vehicle navigation aids for drivers represent an area of considerable research interest. Whereas most previous work on the problem has assumed that such aids should be presented as maps (graphic output on a CRT), recent research suggests that drivers may perform better if given verbal (vocal) directions, rather than a graphic map. Furthermore, anecdotal evidence suggests that people often give directions to others by describing routes which are longer yet simpler than the ones they would normally use themselves. This paper presents an algorithm for selecting paths for travel by road. The algorithm is based on the principle that `ease of description is an important consideration in route selection. The route description is represented by a frame, and the route description cost is approximated by the number of slots in that frame. Then, total route cost is just the sum of the route length and the weighted route description cost.
63 citations
Patent•
09 Apr 1986TL;DR: In this paper, a navigation method for motor vehicles having a display device for representing trip destinations is proposed, in which prior to the beginning of a trip the destination data are input into a memory, and during the trip, by means of a composite navigation system, the instantaneous location of the vehicle with respect to the trip destination is displayed continuously.
Abstract: A navigation method for motor vehicles having a display device (10) for representing trip destinations is proposed, in which prior to the beginning of a trip the destination data are input into a memory (12) and during the trip, by means of a composite navigation system (11-14) the instantaneous location of the vehicle with respect to the trip destination is displayed continuously The navigation method provides that upon attaining the trip destination, the deviations of the input destination from the location, ascertained via the composite navigation, are processed for the calculation of correction values The correction values are stored in memory, and they serve to update code numbers for distance and direction of the composite navigation system, for subsequent trips
36 citations
Patent•
09 Apr 1986TL;DR: A navigation process for vehicles, with an indication device for representing destinations, in which the destination data are fed into a memory before the journey is undertaken and during travel the instantaneous location of the vehicle in relation to the destination is continually displayed by means of a compound navigation installation as discussed by the authors.
Abstract: A navigation process for vehicles, with an indication device (10) for representing destinations, in which the destination data are fed into a memory (12) before the journey is undertaken and during travel the instantaneous location of the vehicle in relation to the destination is continually displayed by means of a compound navigation installation (11 to 14). The navigation process ensures that, when the destination is attained, the deviations of the input destination from the location determined by the compound navigation installation are processed in order to calculate correction factors. These factors are stored and serve to update the route and direction parameters of the compound navigation installation for subsequent journeys.
1 citations