×

Apparatus and method of monitoring a subject and providing feedback thereto

  • US 7,202,793 B2
  • Filed: 10/11/2002
  • Issued: 04/10/2007
  • Est. Priority Date: 10/11/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A device for monitoring a subject who is driving a vehicle and providing feedback thereto, comprising:

  • a source of light having first and second wavelengths wherein the first wavelength does not equal the second wavelength;

    at least one image sensor producing a first signal indicative of reflected light having the first wavelength and a second signal indicative of reflected light having the second wavelength;

    a controller receiving the first and second signals and producing a third signal indicative of the first signal subtracted from the second signal such that the third signal is indicative of whether the subject is driving the vehicle while in a state of drowsiness; and

    an interface in communication with the controller providing informational content to the subject in response to the third signal, wherein the informational content includes a distance driven by the subject while driving the vehicle in the state of drowsiness.

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