Road sign information display system and method in vehicle

Patent metadata

Field	Value
Publication number	US-10336190-B2
Application number	US-201514940372-A
Country	US
Kind code	B2
Filing date	Nov 13, 2015
Priority date	Nov 17, 2014
Publication date	Jul 2, 2019
Grant date	Jul 2, 2019

Abstract

In a sign information display system or method, if a road sign is recognized by a sign recognition device, a display control device determines whether or not it will cause a sign information display device to display first sign information, which is information concerning the road sign, on the basis of a driving state of a front vehicle driving in front of the vehicle.

First claim

What is claimed is:

1. A road sign information display system in a vehicle comprising:
a front surround view camera installed in a host vehicle and configured to obtain an image of surroundings in front of the host vehicle;
a sign recognition device that recognizes a road sign from the image to provide first sign information representing the recognized road sign, the road sign being a stop sign or a do-not-enter sign;
a sign information display device that displays the first sign information to a driver in the host vehicle;
a display control device that controls the sign information display device; and
a front vehicle recognition device that recognizes a front vehicle running ahead of the host vehicle in a driving lane in which the host vehicle is running or in an adjacent driving lane so as to provide information relating to movement of the front vehicle,
wherein the display control device is configured to determine whether or not the sign information display device is allowed to display the first sign information, on the basis of the information relating to the movement of the front vehicle,
wherein the information relating to the movement of the front vehicle comprises at least a velocity of the front vehicle,
wherein the display control device is further configured to
detect the velocity of the front vehicle and a velocity of the host vehicle,
obtain a predetermined threshold velocity by multiplying the velocity of the host vehicle by 0.6 to 0.9, and
compare the velocity of the front vehicle and the predetermined threshold velocity, and

wherein the display control device does not allow the sign information display device to display the first sign information when the velocity of the front vehicle is higher than the predetermined threshold velocity.

2. A sign information display system in a vehicle, comprising:
a front surround view camera installed in a host vehicle and configured to obtain an image of surroundings in front of the host vehicle;
a sign recognition device that recognizes a road sign from the image to provide first sign information representing the recognized road sign, the road sign being a stop sign or a do-not-enter sign;
a sign information display device that displays the first sign information to a driver in the host vehicle;
a display control device that controls the sign information display device; and
a front vehicle recognition device that recognizes a front vehicle running ahead of the host vehicle in a driving lane in which the host vehicle is running or in an adjacent driving lane so as to provide information relating to movement of the front vehicle,
wherein the display control device is configured to determine whether or not the sign information display device is allowed to display the first sign information, on the basis of the information relating to the movement of the front vehicle,
wherein the information relating to the movement of the front vehicle comprises a deceleration rate of velocity of the front vehicle,
wherein the display control device is further configured to
detect the deceleration rate of the velocity of the front vehicle, and
compare the deceleration rate of the velocity of the front vehicle and a predetermined threshold rate, and

wherein the display control device does not allow the sign information display device to display the first sign information when the deceleration rate of the velocity of the front vehicle is lower than the predetermined threshold rate.

3. The sign information display system according to claim 1 , wherein the front vehicle recognition device is further configured to provide information relating to a lane location at which the front vehicle is running, and the display control device does not allow the sign information display device to display the first sign information when the front vehicle recognition device recognizes that the front vehicle is in the adjacent driving lane.

4. The sign information display system according to claim 1 , wherein the display control device is further configured to detect whether the host vehicle is turning right or left or whether the host vehicle is entering a side road, the display control device allows the sign information display device to display the first sign information when the tuning of the host vehicle or the entering of the host vehicle into the side road is detected.

5. The sign information display system according to claim 1 , further comprising:
a vehicle position detection device that detects a current position of the host vehicle; and
a map database containing map information,
wherein the display control device is configured to obtain second sign information from the map information relating to the current position of the host vehicle and to compare the first sign information obtained through the front surround view camera with the corresponding second sign information, and the display control device selects either of the first sign information or the second sign information to display in the sign information display device, on the basis of a comparison result.

Assignees

• Honda Motor Co Ltd

Inventors

• Yokochi Yuji
• Saito Shinnosuke
• Tokatsudo Izumi
• Ikeda Tetsuo

Classifications

• G06V20/588 Primary

  Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road · CPC title

• B60K35/00 Primary

  Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles · CPC title

• G06K9/00805

  Physics · mapped topic

• G06K9/00818

  Physics · mapped topic

• G06K9/00798

  Physics · mapped topic