Installation for informing users of a bus network about waiting times for the buses
US5483234A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Jun 2, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/123
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The installation is intended to inform users of a bus network about waiting times for buses at stops in the network, the installation including a central station suitable for transmitting radio signals relating to the real instantaneous positions of the buses and portable receiver appliances (1) suitable for displaying waiting times on their own screens (3). Each appliance has an appliance identification symbol recorded therein and also (at 11) an expiry date, and it is possible to obtain the desired displays on the screen only if said appliance is used earlier than said date. Provision is made for renewing the appliance remotely for new subscription periods at the end of each subscription.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.