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US 8,150,616 B2Granted
Navigation apparatus and program storage medium
AssigneeDenso Corporation
InventorYasuhiro Shimizu
Life of this patent
Estimating the term…
Abstract
A navigation apparatus mounted in a subject vehicle designates an inference destination point based on historical data and calculates a reference route to the inference destination point. If the subject vehicle deviates from the reference route before arriving at the inference destination point, the navigation apparatus records a shift route until the subject vehicle returns to the reference route. When the subject vehicle returns to the reference route, the shift route from a deviation point to a return point is recorded as a difference route.
Claims12
A navigation apparatus comprising:
- a navigation means for calculating a guidance route and navigating along the calculated guidance route;
- a destination inference means for reading position information resulting from an act of a user taking place before an immediately preceding start-up and designating an inference destination point based on the read position information without receiving a direct and unique designation for a destination point by the user;
- a reference route calculation means for calculating a reference route to reach the designated inference destination point;
- a deviation detection means for detecting a deviation of a present position from the calculated reference route;
- a return detection means for detecting a return of the present position to the reference route after the deviation is detected;
- a record means for recording as a difference route a shift route from a deviation point where the deviation is detected to a return point where the return is detected;
- and
- a record cancellation means for canceling the recording of the shift route after the deviation is detected when a predetermined cancellation condition is satisfied before the return is detected,
- wherein in calculating a guidance route, the navigation means is configured to prioritize the difference route over another route, as a part of a guidance route including a segment from the deviation point to the return point, and
- wherein the cancellation condition is satisfied when a main power supply is not turned ON within a predetermined time period after being turned OFF.
7 more elements
A navigation apparatus comprising:
- a navigation means for calculating a guidance route and navigating along the calculated guidance route;
- a destination inference means for reading position information resulting from an act of a user taking place before an immediately preceding start-up and designating an inference destination point based on the read position information without receiving a direct and unique designation for a destination point by the user;
- a reference route calculation means for calculating a reference route to reach the designated inference destination point;
- a deviation detection means for detecting a deviation of a present position from the calculated reference route;
- a return detection means for detecting a return of the present position to the reference route after the deviation is detected;
- a record means for recording as a difference route a shift route from a deviation point where the deviation is detected to a return point where the return is detected;
- and
- a record cancellation means for canceling the recording of the shift route after the deviation is detected when a predetermined cancellation condition is satisfied before the return is detected,
- wherein in calculating a guidance route, the navigation means is configured to prioritize the difference route over another route, as a part of a guidance route including a segment from the deviation point to the return point, and
- wherein the cancellation condition is satisfied after the deviation is detected when a predetermined number of times is reached by a number of times of being turned OFF of the main power supply before the return is detected.
7 more elements
A method for calculating a reference route by designating an inference destination point without receiving a destination point from a user in a navigation apparatus, the method comprising:
- reading, in a navigation apparatus, position information resulting from an act of the user taking place before an immediately preceding start-up;
- designating, in the navigation apparatus, an inference destination point based on the read position information without receiving a direct and unique designation for a destination point by the user;
- calculating, in the navigation apparatus, a reference route to reach the designated inference destination point;
- detecting, in the navigation apparatus, a deviation of a present position from the calculated reference route;
- detecting, in the navigation apparatus, a return of the present position to the reference route after the deviation is detected;
- recording as a difference route a shift route from a deviation point where the deviation is detected to a return point where the return is detected;
- and
- canceling, in the navigation apparatus, the recording of the shift route after the deviation is detected when a predetermined cancellation condition is satisfied before the return is detected,
- wherein:
- in calculating a guidance route, the difference route is prioritized over another route, as a part of a guidance route including a segment from the deviation point to the return point;
- and
- wherein the cancellation condition is satisfied when a main power supply is not turned ON within a predetermined time period after being turned OFF.
9 more elements
A method for calculating a reference route by designating an inference destination point without receiving a destination point from a user in a navigation apparatus, the method comprising:
- reading, in the navigation apparatus, position information resulting from an act of the user taking place before an immediately preceding start-up;
- designating, in the navigation apparatus, an inference destination point based on the read position information without receiving a direct and unique designation for a destination point by the user;
- calculating, in the navigation apparatus, a reference route to reach the designated inference destination point;
- detecting, in the navigation apparatus, a deviation of a present position from the calculated reference route;
- detecting, in the navigation apparatus, a return of the present position to the reference route after the deviation is detected;
- recording as a difference route a shift route from a deviation point where the deviation is detected to a return point where the return is detected;
- and
- canceling, in the navigation apparatus, the recording of the shift route after the deviation is detected when a predetermined cancellation condition is satisfied before the return is detected,
- wherein:
- in calculating a guidance route, the difference route is prioritized over another route, as a part of a guidance route including a segment from the deviation point to the return point;
- and
- the cancellation condition is satisfied after the deviation is detected when a predetermined number of times is reached by a number of times of being turned OFF of the main power supply before the return is detected.
9 more elements
Dependencies are inferred from the claim text.