Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2007-04-10
2007-04-10
Mullen, Thomas (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C600S558000
Reexamination Certificate
active
10269508
ABSTRACT:
A device and method for monitoring a subject and providing feedback back to the subject that is pertinent to a behavior of the subject. The device includes 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; and an interface in communication with the controller providing informational content to the subject in response to the third signal, wherein the informational content is associated with a behavior of the subject. The method includes directing light having a first wavelength toward a subject; directing light having a second wavelength toward the subject, wherein the first wavelength does not equal the second wavelength; capturing a first image of light reflected by the subject having the first wavelength; capturing a second image of light reflected by the subject having the second wavelength; subtracting a signal indicative of the first image from a signal indicative of the second image and producing a third signal; and providing informational content to the subject in response to the third signal.
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Morimoto et al., “Pupil Detection and Tracking Using Multiple Light Sources”, Image and Vision Computing 18, pp. 331-335 (2000).
Yoshinobu Ebisawa, “Unconstrained Pupil Detectio Technique Using TwoLight Sources And The Image Difference Method,” Faculty of Engineering, Shizuoka University, Johoku 3-5-1, Hamamatsu Shizuoka 432 Japan.
Ayoob Ellen M.
Grace Richard
Attention Technologies, Inc.
Kirkpatrick & Lockhart Nicholson & Graham LLP
Mullen Thomas
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