Speed limit informing device installed in on-board navigation system
First Claim
1. An on-board device for informing a speed limit set for an own lane, on which an own vehicle is driving, the own lane being included in a multi-lane road, the on board device comprising a control circuit configured to:
- specify the speed limit set for the own lane; and
inform the specified speed limit to a driver;
whereinthe control circuit further specifies a speed limit set for a neighboring lane of the own lane; and
the control circuit informs the driver that the speed limit set for the neighboring lane is different from the speed limit of the own lane when such is the case.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for informing to a driver a speed limit set for an own lane included in a multi-lane road is installed in a navigation system mounted on an automotive vehicle. The device includes a road surface camera for taking pictures of the speed limit painted on a road surface and informing devices such as a display panel and/or a speaker. The speed limit set for the own lane is specified based on the pictures taken by the road surface camera, and the specified speed limit is informed to the driver. Speed limits set for neighboring lanes may be also specified, and if they are different from the speed limit set for the own lane, this is informed to the driver together with the speed limits set for the neighboring lanes. It is not required to distinguish the own lane from among other lanes included in the multi-lane road because the speed limit set for the own lane is detected by the camera mounted on the own vehicle.
9 Citations
16 Claims
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1. An on-board device for informing a speed limit set for an own lane, on which an own vehicle is driving, the own lane being included in a multi-lane road, the on board device comprising a control circuit configured to:
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specify the speed limit set for the own lane; and inform the specified speed limit to a driver;
whereinthe control circuit further specifies a speed limit set for a neighboring lane of the own lane; and the control circuit informs the driver that the speed limit set for the neighboring lane is different from the speed limit of the own lane when such is the case. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, in a vehicle, for displaying a first speed limit of a first lane and an adjacent speed limit of an adjacent lane of a multi-lane road, the vehicle traveling in the first lane, the apparatus comprising:
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a display device; and a control circuit configured to determine the first speed limit of the first lane and determine the adjacent speed limit of the adjacent lane, control the display device to display the first speed limit of the first lane, determine whether the first speed limit of the first lane and the adjacent speed limit of the adjacent lane are different, and when it is determined that the first speed limit of the first lane and the adjacent speed limit of the adjacent lane are different, control the display device to display an indication that the first speed limit of the first lane and the adjacent speed limit of the adjacent lane are different. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification