System for transmitting information when a motor vehicle driving in the wrong direction has been detected, corresponding transmitting and receiving devices and corresponding transmitting and receiving methods

Patent metadata

Field	Value
Publication number	US-9886853-B2
Application number	US-201414915334-A
Country	US
Kind code	B2
Filing date	Sep 1, 2014
Priority date	Sep 6, 2013
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

A system for transferring information upon detection of wrong-way driving of a motor vehicle includes a transmitting device and a receiving device. The transmitting device encompasses a light source that is embodied to emit a light-coded signal, as well as a recognition unit that is embodied to detect wrong-way driving of a motor vehicle. The transmitting device is configured to emit the light-coded signal by way of the light source as soon as the recognition unit detects wrong-way driving of a motor vehicle, the light-coded signal containing an information item regarding wrong-way driving of the motor vehicle. The receiving device is configured to execute a row-by-row and/or column-by-column image scan, and to receive and evaluate a light-coded signal completely within one image.

First claim

What is claimed is:

1. A device for transferring information upon detection of wrong-way driving of a motor vehicle, the device comprising:
a recognition unit configured to detect wrong-way driving of a motor vehicle; and
a transmitting unit including a light source and configured to, in response to the recognition unit detecting the wrong way driving, control the light source to emit a plurality of different light patterns over a period of time that, when combined into a single composite image of a plurality of line-by-line scans of light emitted by the light source over the period of time, form a light-coded signal that contains an information item regarding the wrong-way driving of the motor vehicle.

2. The device as recited in claim 1 , wherein a headlight of the motor vehicle is the light source.

3. The device as recited in claim 2 , wherein the light source is an LED headlight.

4. The device as recited in claim 2 , wherein the light-coded signal is generated by modulation of the light of the light source.

5. A transmitting device for transferring information upon detection of wrong-way driving of a motor vehicle, the device comprising:
a recognition unit configured to detect wrong-way driving of a motor vehicle; and
a light source configured to emit a light-coded signal as soon as the recognition unit detects wrong-way driving of the motor vehicle;
wherein the light-coded signal:
contains an information item regarding wrong-way driving of the motor vehicle; and
is generated by modulation of light of the light source implemented by application of control to different groups of light-emitting diodes of the light source, the duration of the application of control to the light-emitting diodes being variable over time from one group to another and being predetermined for each group of light-emitting diodes.

6. The transmitting device as recited in claim 5 , wherein the light source is an LED headlight.

7. The transmitting device as recited in claim 6 , wherein the LED headlight is of the motor vehicle.

8. The device as recited in claim 1 , wherein the light-coded signal includes a first bar and a second bar that is longer than the first bar, and the transmitting unit is configured to control a first light of the light source to emit light for a first amount of time to generate the first bar in the composite image and control a second light of the light source to emit light for a second amount of time, which is longer than the first amount of time, to generate the second bar in the composite image.

9. A receiving device, comprising:
an optical detector configured to receive a plurality of different light patterns emitted toward the optical detector over a period of time and execute at least one of a row-by-row and a column-by-column image scan of the received plurality of different light patterns, to thereby generate a single image of a light-coded message regarding a traffic situation.

10. The receiving device as recited in claim 9 , wherein the optical detector is a camera system.

11. The receiving device as recited in claim 9 , wherein the camera system has a rolling shutter.

12. A method for transmitting information upon detection of wrong-way driving of a motor vehicle, comprising:
detecting, using a wrong-way driving detection unit, wrong-way driving of a motor vehicle; and
in response to the detecting, emitting, using a light source, a plurality of different light patterns over a period of time that, when combined into a single composite image of a plurality of line-by-line scans of light emitted by the light source over the period of time, form a light-coded signal that contains an information item regarding the wrong-way driving of the motor vehicle.

13. A method for receiving and evaluating information regarding wrong-way driving of a motor vehicle, the method comprising:
receiving, by an optical detector, a plurality of different light patterns emitted toward the optical detector over a period of time; and signal;
executing, by the optical detector, at least one of a row-by-row and a column-by-column image scan of the received plurality of different light patterns, to thereby generate a single image of a light-coded message regarding a traffic situation.

14. The method as recited in claim 13 , further comprising:
providing a control signal in response to the message.

15. A system for transferring information upon detection of wrong-way driving of a motor vehicle, comprising:
a transmitting device including:
a recognition unit configured to detect wrong-way driving of a motor vehicle; and
a transmitting unit including a light source and configured to, in response to the recognition unit detecting the wrong way driving, control the light source to emit a plurality of different light patterns over a period of time that, when combined into a single composite image of a plurality of line-by-line scans of light emitted by the light source over the period of time, form a light-coded signal that contains an information item regarding the wrong-way driving of the motor vehicle; and

a receiving device including:
an optical detector configured to receive the plurality of different light patterns, when emitted by a different transmitting unit toward the optical detector over a period of time, and execute at least one of a row-by-row and a column-by-column image scan of the received plurality of different light patterns, to thereby generate a single image of a light-coded message regarding the wrong-way driving.

16. A system for transferring information upon detection of wrong-way driving of a motor vehicle, the system comprising:
a transmitting device including:
a recognition unit configured to detect wrong-way driving of a motor vehicle; and
a light source configured to emit a light-coded signal as soon as the recognition unit detects wrong-way driving of the motor vehicle, wherein the light-coded signal contains an information item regarding wrong-way driving of the motor vehicle; and

a receiving device including:
an optical detector configured to execute at least one of a row-by-row and a column-by-column image scan, and to receive and evaluate a light-coded signal emitted toward the optical detector;

wherein the transmitting device is configured to emit the light-coded signal completely within one image scanning operation of the receiving device, and the receiving device is configured to receive the light-coded signal completely within one image.

17. The system as recited in claim 15 , wherein the light-coded signal includes a first bar and a second bar that is longer than the first bar, and the transmitting unit is configured to control a first light of the light source to emit light for a first amount of time to generate the first bar in the composite image and control a second light of the light source to emit light for a second amount of time, which is longer than the first amount of time, to generate the second bar in the composite image.

Assignees

• Bosch Gmbh Robert

Inventors

• Rous Martin
• Hofsaess Volker

Classifications

• G08G1/164

  Centralised systems, e.g. external to vehicles · CPC title

• G08G1/056 Primary

  with provision for distinguishing direction of travel · CPC title

• H04B10/116

  Visible light communication · CPC title

• G08G1/092

  Coding or decoding of the information · CPC title

• G08G1/162

  event-triggered · CPC title