Encoded binary liveness detector
First Claim
Patent Images
1. A device for detecting the presence of skin, comprising:
- an illuminator source for providing a first encoded IR band and a second encoded IR band, said first encoded IR band being capable of being reflected from skin and said second encoded IR band being capable of being absorbed by skin;
a detector for receiving said first and second encoded IR bands after said bands have contacted said skin and for providing a signal indicating the presence or absence of each of said first and second IR bands; and
a detector processing unit for decoding and processing said signal and indicating the presence of skin when said first IR band is present and said second IR band is absent.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for detecting the presence of human skin including an illuminator source for providing a first encoded IR band and a second encoded IR band. The first encoded IR band is capable of being reflected from skin and the second encoded IR band is capable of being absorbed by skin. A detector receives the first and second encoded IR band after the bands have contacted the skin and provides an encoded signal indicating the presence or absence of each of the first and second IR bands. A processing unit decodes and processes the signal and indicates the presence of skin when the first IR band is present and the second IR band is absent.
-
Citations
20 Claims
-
1. A device for detecting the presence of skin, comprising:
-
an illuminator source for providing a first encoded IR band and a second encoded IR band, said first encoded IR band being capable of being reflected from skin and said second encoded IR band being capable of being absorbed by skin; a detector for receiving said first and second encoded IR bands after said bands have contacted said skin and for providing a signal indicating the presence or absence of each of said first and second IR bands; and a detector processing unit for decoding and processing said signal and indicating the presence of skin when said first IR band is present and said second IR band is absent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A device for detecting the presence of skin, comprising:
-
illuminator source means for providing a first encoded IR band and a second encoded IR band, said first encoded IR band being capable of being reflected from skin and said second encoded IR band being capable of being absorbed by skin; detector means for receiving and decoding said first and second encoded IR bands after said bands have contacted said skin and for providing a signal indicating the presence or absence of each of said first and second encoded IR bands; and detector processing unit means for decoding and processing said signal and indicating the presence of skin when said first encoded IR band is present and said second encoded IR band is absent. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification