Method and system to detect tampering using light detector
First Claim
Patent Images
1. An optical anti-tamper system, the system comprising:
- a light emitting layer located within a chassis;
a light detecting layer located within the chassis; and
one or more detectors optically coupled to the light detecting layer, the one or more detectors in communication with an alarm, wherein the alarm is operable to transmit a tamper-event warning signal if an increased light level is detected by at least one detector.
1 Assignment
0 Petitions
Accused Products
Abstract
An optical anti-tamper system including a light emitting layer located within a chassis, a light detecting layer located within the chassis and one or more detectors optically coupled to the light detecting layer. The one or more detectors are in communication with an alarm. The alarm is operable to transmit a tamper-event warning signal if an increased light level is detected by at least one detector.
44 Citations
20 Claims
-
1. An optical anti-tamper system, the system comprising:
-
a light emitting layer located within a chassis;
a light detecting layer located within the chassis; and
one or more detectors optically coupled to the light detecting layer, the one or more detectors in communication with an alarm, wherein the alarm is operable to transmit a tamper-event warning signal if an increased light level is detected by at least one detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of manufacture, the method comprising:
-
positioning at least one light emitting layer within a chassis;
positioning at least one light detecting layer within the chassis operable to receive light from at least one light emitting layer;
positioning at least one opaque layer to prevent light from propagating from the light emitting layers to any one of the light detecting layers; and
connecting an alarm in communication with one or more detectors correlated to the light detecting layer. - View Dependent Claims (14)
-
-
15. A method to detect a tampering event, the method comprising:
-
breaking an opaque layer, wherein the break is located between a light emitting layer and a light detecting layer within the chassis;
transmitting light through a portion of a light detecting layer responsive to breaking the opaque layer;
detecting an increase in a light level at one or more detectors responsive to the transmitting light; and
generating a tamper-event warning signal responsive to the detecting. - View Dependent Claims (16, 17, 18)
-
-
19. An optical anti-tamper system, the system comprising:
-
means for detecting an increased light level within the chassis responsive to cutting a light emitting layer and an adjacent a light detecting layer both located within the chassis near a protected component; and
means for generating tamper-event warning signal responsive to the detecting. - View Dependent Claims (20)
-
Specification