摘要:
A bird's eye view commonly used in a flight simulation is applicable to an apparatus and method for navigating a vehicle running on a set route of travel to a set destination using a (color) display unit according to the present invention. The bird's eye view of a road map surrounding a present position of the vehicle has a viewing point placed at a predetermined position on an upper sky in a direction opposite to the set destination with the present position of the vehicle as a reference and has a line of sight looking down over the road map so that a part of the road map surrounding the present position of the vehicle can be viewed in an extended scale form and the remaining part of the road map remote from the present position and nearer to the set destination can be viewed in a gradually reduction scale form.
摘要:
A bird's eye view commonly used in a flight simulation is applicable to an apparatus and method for navigating a vehicle running on a set route of travel to a set destination using a (color) display unit according to the present invention. The bird's eye view of a road map surrounding a present position of the vehicle has a viewing point placed at a predetermined position on an upper sky in a direction opposite to the set destination with the present position of the vehicle as a reference and has a line of sight looking down over the road map so that a part of the road map surrounding the present position of the vehicle can be viewed in an extended scale form and the remaining part of the road map remote from the present position and nearer to the set destination can be viewed in a gradually reduction scale form.
摘要:
A vehicle navigation system includes: a key board (9) for setting a start point and a destination of a vehicle; a speed sensor (2) for detecting vehicle travel speed; an azimuth sensor (1) for detecting travel direction; a road map data memory (3) for storing road map data related to various roads; a display unit (8); and CPU (4) provided with functions for detecting a current vehicle position (CVP) on the basis of the detected speed and direction after the start point and in accordance with road map data; calculating a recommendable route from the start point to the destination on the basis of the road map data; and forming various birds-eye view road maps. In particular, the birds-eye view road maps of different visual points (E) and different contraction scale ratios can be formed according to vehicle travel speed or according to a distance from the current vehicle position to the nearest specific traffic point (e.g., intersection); that is, various birds-eye view road maps obtained from a suitable visual point and in a suitable contraction scale ratio can be displayed at all times according to the vehicle travel conditions.
摘要:
A CPU of a navigation device includes a clock unit, a continuous driving time measurement unit that measures continuous driving time from a traveling start time, a course stage prediction unit, and a presenting information controller. The course stage prediction unit selects based on the traveling start time, a first transition determination reference time for transition from a “first stage” to a “middle stage” from prepared data of the first transition determination reference time and a second transition determination reference time for transition from the “middle stage” to a “last stage” from prepared data of the second transition determination reference time. The course stage prediction unit then predicts a course stage by comparing the continuous driving time with the selected transition determination reference times. Depending on the predicted course stage, the presenting information controller presents information convenient for a driver in the predicted course stage.
摘要:
A system measures a traveling direction of a vehicle based on a direction toward a coordinate position defined by outputs of a geomagnetic sensor from a first coordinate position of a center of a corresponding output circle. The system utilizes a preliminary coordinate position as a preliminarily corrected value of the first coordinate position, a first value indicative of accuracy of the preliminary coordinate position and a second value which is variable depending on a variation in a magnetization level on a vehicle body. The system derives a finally corrected value of the first coordinate position based on the preliminary coordinate position and a latest value of the finally corrected value which has been derived in a prior execution of the system, by changing a rate which determines a point of the current finally corrected value between the latest finally corrected value and the preliminary coordinate position.
摘要:
A navigation device, installed on a vehicle to enable information to be provided to an occupant of the vehicle, includes a display section providing a display of an image to the occupant of the vehicle, a speech recognition section executing speech recognition processing for a voice input relating to a speech recognition object word that forms a word to be an objective for speech recognition, and an information providing processor section compelling a predetermined image to be displayed on the display section depending on a recognized content resulting through the speech recognition processing in the presence of recognition of the speech recognition object word resulting through the speech recognition processing. The speech recognition section executes second speech recognition processing for the speech recognition object word except for the speech recognition object word present in the image currently displayed in the display section in the presence of a failure in recognition of the speech recognition object word.
摘要:
In an apparatus and method for guiding a vehicle occupant from a present position of the vehicle to a destination to which the vehicle occupant desires to reach, optimum routes of travel from the present position to respective intersections surrounding the present position of the vehicle are already searched and stored when the vehicle stops at the present position of the vehicle with a vehicular ignition switch turned off. Then, when the ignition switch is turned on and the vehicle occupant sets the destination, the optimum routes from the set destination toward the present position are searched on the basis of the road map data and result of search of the optimum routes of the respective intersections surrounding the present position of the vehicle. When the optimum route from the set destination to the present position of the vehicle is searched, the display unit superimposes and displays the present position of the vehicle and the optimum route to the destination on the road map so as to quickly start the guidance of the route from the present position to the destination. In the embodiment, if the set destination corresponds to one of registered points of locations, the present position and the optimum route to the destination are immediately displayed on the road map after the destination is set.
摘要:
A system for measuring a traveling direction of a vehicle includes a geomagnetic sensor and a gyro sensor. The system utilizes first and second indices for deriving the vehicle traveling direction. The first index is indicative of a disturbance of the geomagnetic field on a short distance basis, and the second index is indicative of a disturbance of the geomagnetic field on a long distance basis. The system varies a rate of dependence upon the geomagnetic sensor and the gyro sensor based on values of the first and second indices when calculating the vehicle traveling direction.
摘要:
In an apparatus for detecting a driving azimuth of a vehicle, a gyroscopic sensor signal and a geomagnetic sensor signal are acquired. When the vehicle is driven in a disturbed geomagnetic area such as a straight road, the acquired geomagnetic sensor signal does not correctly reflect the actual driving azimuth of the vehicle. Moreover, the gyroscopic sensor signal drifts over time. When the vehicle is in such a disturbed geomagnetic area, a variation amount in the acquired geomagnetic sensor signals is subtracted from another variation amount in the acquired gyroscopic sensor signals to obtain a driving azimuth similar to the actual driving azimuth.
摘要:
A navigation device includes a guide point selecting section selecting a guide point related to direction guide information among branch points on a travel path where a vehicle travels; a direction guide information generating section generating the direction guide information of the selected guide point; an output controlling section controlling output of the generated direction guide information; and an output section presenting the direction guide information. The direction guide information generating section generates the direction guide information in which the guide point is associated with display of the place name of the branch destination at the guide point.