Vehicle speed control system
US5901806A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1997 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Dec 16, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2556/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle speed control system for automatically sustaining a vehicle speed at a driver's setting, and decreasing the vehicle speed with decrease in a distance to a vehicle ahead, includes an input section for collecting information on a road situation ahead and a controller for adapting the speed control characteristic to the road situation. The input section of one embodiment includes an image sensing camera for forming an electronic image of the road ahead, and the controller is configured to detect edges such as derivative edges in the image and determine a correction quantity in accordance with the number of detected edges. The controller adjusts the control characteristic by using the correction quantity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.