Car navigation system and program
First Claim
1. A car navigation system provided in a vehicle, the system comprising:
- a current position designating unit configured to designate a current position of the vehicle;
a route guiding unit configured to indicate a guiding route to a destination;
a disk reproducing unit that is able to read and reproduce data from one of (i) a first disk storing map data covering a predetermined map range including the guiding route to the destination and (ii) a second disk storing data other than the map data, wherein the first disk and the second disk are interchangeable in the disk reproducing unit;
a storing unit that stores a portion of the map data partially read out from the first disk via the disk reproducing unit based on the current position, the portion of the map data corresponding to a given partial range included in the predetermined map range, the given partial range not including the destination while covering a partial route included within the guiding route up to a peripheral boundary of the given partial range without reaching the destination; and
a controlling unit configured to cause a display unit to display a mapbased on map data read out from the first disk when the first disk is reproduced by the disk reproducing unit orbased on the portion of the map data, which is corresponding to the given partial range and stored in the storing unit when the second disk is reproduced by the disk reproducing unit;
wherein, when the controlling unit causes the display unit to display a map based on the portion of the map data, the controlling unit causes the route guiding unit to indicate a route to a temporary destination that is as close as possible to the peripheral boundary of the given partial range of the map data along the guiding route to the destination and is a stoppable place where the vehicle is able to stop.
1 Assignment
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Accused Products
Abstract
When a corridor operation is conducted in a car navigation system, a stoppable place where a vehicle is able to stop is retrieved before a map disk is removed. The stoppable place is a place that is located along a route to a destination and also as close as possible to a regional boundary of map data clipped out from the map disk to an external memory. When the stoppable place is retrieved, route guiding is performed so that the retrieved stoppable place is regarded as a temporary destination. Therefore, re-setting the map disk can be safely achieved by stopping the vehicle at the stoppable place, which helps prevent usability of the corridor operation from deteriorating.
13 Citations
15 Claims
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1. A car navigation system provided in a vehicle, the system comprising:
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a current position designating unit configured to designate a current position of the vehicle; a route guiding unit configured to indicate a guiding route to a destination; a disk reproducing unit that is able to read and reproduce data from one of (i) a first disk storing map data covering a predetermined map range including the guiding route to the destination and (ii) a second disk storing data other than the map data, wherein the first disk and the second disk are interchangeable in the disk reproducing unit; a storing unit that stores a portion of the map data partially read out from the first disk via the disk reproducing unit based on the current position, the portion of the map data corresponding to a given partial range included in the predetermined map range, the given partial range not including the destination while covering a partial route included within the guiding route up to a peripheral boundary of the given partial range without reaching the destination; and a controlling unit configured to cause a display unit to display a map based on map data read out from the first disk when the first disk is reproduced by the disk reproducing unit or based on the portion of the map data, which is corresponding to the given partial range and stored in the storing unit when the second disk is reproduced by the disk reproducing unit; wherein, when the controlling unit causes the display unit to display a map based on the portion of the map data, the controlling unit causes the route guiding unit to indicate a route to a temporary destination that is as close as possible to the peripheral boundary of the given partial range of the map data along the guiding route to the destination and is a stoppable place where the vehicle is able to stop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A car navigation system provided in a vehicle, the system comprising:
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a current position designating unit configured to designate a current position of the vehicle; a disk reproducing unit that is able to read and reproduce data from one of a first disk storing map data covering a predetermined map range including a guiding route to a final destination and a second disk storing data other than the map data, wherein the first disk and the second disk are interchangeable in the disk reproducing unit; a storing unit that stores a portion of the map data partially read out from the first disk via the disk reproducing unit based on the current position, the portion of the map data corresponding to a given partial range included in the predetermined map range, the given partial range covering a route to reach a peripheral boundary of the given partial range; a controlling unit configured to cause a display unit to display a map based on map data read out from the first disk when the first disk is reproduced by the disk reproducing unit or based on the portion of the map data, which is corresponding to the given partial range and stored in the storing unit when the second disk is reproduced by the disk reproducing unit; a notifying unit that notifies a user, wherein, in a case that the controlling unit causes the display unit to display a map based on the portion of the map data stored in the storing unit, the controlling unit causes the notifying unit to notify a place where the vehicle is able to stop and that is located from the current position to the peripheral boundary of the given partial range, when the vehicle approaches the peripheral boundary within a given distance. - View Dependent Claims (11, 12, 13)
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14. A computer program product in a computer-readable medium for use in a oar navigation system provided in a vehicle, the car navigation system including
a current position designating unit configured to designate a current position of the vehicle; -
a disk reproducing unit that is able to read and reproduce data from one of (i) a first disk storing map data covering a predetermined map range including the guiding route to a final destination, and (ii) a second disk storing data other than the map data, wherein the first disk and the second disk are interchangeable in the disk reproducing unit; and a storing unit that stores a portion of the map data partially read out from the first disk via the disk reproducing unit based on the current position, the portion of the map data corresponding to a given partial range included in the predetermined map range, the given partial range not including the destination while covering a partial route included within the guiding route up to a peripheral boundary of the given partial range without reaching the destination; the computer program product comprising; instructions for causing a display unit to display a map based on map data read out from the first disk when the first disk is reproduced by the disk reproducing unit or based on the portion of the map data, which is corresponding to the given partial range and stored in the storing unit when the second disk is reproduced by the disk reproducing unit; and instructions for indicating a route to a temporary destination that is a stoppable place where the vehicle is able to stop when the display unit is caused to display a map based on the portion of the map data, wherein the temporary destination is as close as possible to the peripheral boundary of the given partial range of the map data along the guiding route to the final destination.
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15. A computer program product in a computer-readable medium for use in a car navigation system provided in a vehicle, the car navigation system including
a current position designating unit configured to designate a current position of the vehicle; -
a disk reproducing unit that is able to read and reproduce data from one of a first disk storing map data covering a predetermined map range including a guiding route to a final destination and a second disk storing data other than the map data, wherein the first disk and the second disk are interchangeable in the disk reproducing unit; and a storing unit that stores a portion of the map data partially read out from the first disk via the disk reproducing unit based on the current position, the portion of the map data corresponding to a given partial range included in the predetermined map range, the given partial range covering a route to reach a peripheral boundary of the given partial range; the computer program product comprising; instructions for causing a display unit to display a map based on map data read out from the first disk when the first disk is reproduced by the disk reproducing unit or based on the portion of the map data, which is corresponding to the given partial range and stored in the storing unit when the second disk is reproduced by the disk reproducing unit; and instructions for notifying a user of a stoppable place where the vehicle is able to stop when the vehicle approaches the peripheral boundary of the given partial range within a given distance, in a case that the display unit is caused to display a map based on the portion of the map data, wherein the stoppable place is located from the current position to the peripheral boundary of the given partial range.
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Specification