VEHICLE SPEED LIMIT DISPLAY DEVICE

• US 20160335891A1
• Filed: 05/11/2016
• Published: 11/17/2016
• Est. Priority Date: 05/11/2015
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: FUJIMAKI, Yusuke
• Application Number:
  US15/152,169
• Publication Number:
  US 20160335891A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60Q 9/00 Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 , e.g. haptic signalling
• CPC Class Codes: B60R 2300/80 characterised by the intended use of the viewing arrangement
• CPC Class Codes: G06V 20/582 of traffic signs
• CPC Class Codes: G08G 1/09623 Systems involving the acquisition of information from passive traffic signs by means mounted on the vehicle G08G1/0967 takes precedence
• CPC Class Codes: G08G 1/0967 Systems involving transmission of highway information, e.g. weather, speed limits transmission of navigation instructions to the vehicle G08G1/0968

Abstract

A speed limit display device for a vehicle includes: an indicator; an image obtaining device; and a processing portion connected to the image obtaining device and the indicator, wherein the processing portion is configured to detect a speed limit indicated on a traffic sign in the captured landscape based on the image data, the processing portion is configured 10 display the detected speed limit on the indicator when an operating state of a switching portion is the state that makes the vehicle travel forward, and the processing portion is configured to stop the indicator from displaying the detected speed limit when the operating state of the switching portion is the state that makes the vehicle travel in reverse.

Claims

1. A speed limit display device for a vehicle, comprising:

an indicator configured to display information related to a speed limit of a road on which the vehicle is traveling, the indicator mounted in the vehicle provided with a switching portion configured to switch between a state that makes the vehicle travel forward and a state that makes the vehicle travel in reverse;

an image obtaining device configured to capture an image of a landscape in a direction in which the vehicle is traveling and obtain image data of the landscape; and

a processing portion connected to the image obtaining device and the indicator, wherein

the processing portion is configured to detect a speed limit indicated on a traffic sign in the landscape based on the image data,

the processing portion is configured to display the speed limit on the indicator when an operating state of the switching portion is the state that makes the vehicle travel forward, and

the processing portion is configured to stop the indicator from displaying the speed limit when the operating state of the switching portion is the state that makes the vehicle travel in reverse.

2. The speed limit display device according to claim 1, wherein

the processing portion includes a storage element that stores the speed limit, and

the processing portion is configured to, each time the speed limit is newly detected, replace the speed limit stored in the storage element with a newly detected speed limit and store the newly detected speed limit in the storage element, and

the processing portion is configured to display the speed limit stored in the storage element on the indicator when the speed limit is not newly detected while the operating state of the switching portion is the state that makes the vehicle travel in reverse, and the operating state of the switching portion is then switched from the state that makes the vehicle travel in reverse to the state that makes the vehicle travel forward.

3. The speed limit display device according to claim 2, wherein

the processing portion is configured to not display the speed limit stored in the storage element on the indicator, when the speed limit is newly detected while the operating state of the switching portion is the state that makes the vehicle travel in reverse, even when the operating state of the switching portion then switches from the state that makes the vehicle travel in reverse to the state that makes the vehicle travel forward.

4. A speed limit display device for a vehicle, comprising:

an indicator configured to display information related to a speed limit of a road on which the vehicle is traveling, the indicator mounted in the vehicle provided with a switching portion configured to switch between a state that makes the vehicle travel forward and a state that makes the vehicle travel in reverse;

an image obtaining device configured to capture an image of a landscape in a direction in which the vehicle is traveling and obtain image data of the landscape; and

an electronic control unit connected to the image obtaining device and the indicator, wherein

the electronic control unit is configured to

detect a speed limit indicated on a traffic sign in the landscape based on the image data,

display the speed limit on the indicator when an operating state of the switching portion is the state that makes the vehicle travel forward, and

stop the indicator from displaying the speed limit when the operating state of the switching portion is the state that makes the vehicle travel in reverse,

5. A method for displaying speed limit in a vehicle, comprising:

capturing an image of a landscape in a direction in which the vehicle is traveling and obtaining image data of the landscape;

detecting a speed limit indicated on a traffic sign in the landscape based on the image data;

determining an operating state of a switching portion of the vehicle between a first state that makes the vehicle travel forward and a second state that makes the vehicle travel in reverse;

displaying the speed limit on an indicator when the operating state of a switching portion is the first state that makes the vehicle travel forward; and

stopping the indicator from displaying the speed limit on the indicator when the operating state of the vehicle is in the second state that makes the vehicle travel in reverse.