Please download the dossier by clicking on the dossier button x
×

Device for detecting whether a vehicle seat is occupied by means of a stereoscopic image recording sensor

  • US 6,704,114 B1
  • Filed: 08/17/2001
  • Issued: 03/09/2004
  • Est. Priority Date: 11/16/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for detecting a manner in which a vehicle seat is occupied, comprising:

  • a stereoscopic image recording device including at least one optical sensor recording a scene at the vehicle seat, the image recording device deriving, from the scene, a three-dimensional map partitioned into a plurality of zones, indicating for each of the zones a distance from a reference point, the at least one optical sensor having a nonlinear transducer characteristic curve over an entire operating range, describing a correlation between an incident light intensity and an electrical output signal of the at least one optical sensor, a steepness of the characteristic curve decreasing with increasing light intensity; and

    a light source arranged to illuminate the scene at the vehicle seat and to shine infrared light synchronously with an activation of the stereoscopic image recording device.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×