Broadcast radio transmissions to control electronically configurable traffic signs
US11790774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2022 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Sep 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method comprises: generating a traffic sign message configured to configure an active traffic sign that is electronically configurable; encrypting the traffic sign message to produce an encrypted traffic sign message; sending the encrypted traffic sign message to a radio broadcast transmitter; and at the radio broadcast transmitter, transmitting the encrypted traffic sign message in a radio broadcast signal; and at the active traffic sign: receiving the radio broadcast signal and recovering the encrypted traffic sign message from the radio broadcast signal; decrypting the encrypted traffic sign message to produce the traffic sign message; and configuring the active traffic sign according to the traffic sign message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.