Optical anti-theft system
First Claim
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1. An optical anti-theft system having a security code, said optical anti-theft system comprising:
- a member having a plurality of reflective surfaces on a single track, each reflective surface of said plurality of reflective surfaces having a reflectivity corresponding with a depth, said plurality of reflective surfaces having a pattern corresponding with the security code; and
a base for cooperating with said member, said base comprising;
a light source for generating a light beam to illuminate said plurality of reflective surfaces; and
a light detector for sensing said illuminated plurality of reflective surfaces and for initiating a security function in response to said sensed illuminated plurality of reflective surfaces having said pattern corresponding with the security code.
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Abstract
An optical anti-theft system incorporates a member having a plurality of reflective surfaces. The plurality forms a pattern corresponding with the security code. The system additionally incorporates a base for receiving the member. The base incorporates a light source for generating a light beam to illuminate the plurality of reflective surfaces, and a light detector for sensing the illuminated plurality of reflective surfaces and for initiating a security function in response to the sensed illuminated plurality of reflective surfaces having the pattern.
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Citations
26 Claims
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1. An optical anti-theft system having a security code, said optical anti-theft system comprising:
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a member having a plurality of reflective surfaces on a single track, each reflective surface of said plurality of reflective surfaces having a reflectivity corresponding with a depth, said plurality of reflective surfaces having a pattern corresponding with the security code; and a base for cooperating with said member, said base comprising; a light source for generating a light beam to illuminate said plurality of reflective surfaces; and a light detector for sensing said illuminated plurality of reflective surfaces and for initiating a security function in response to said sensed illuminated plurality of reflective surfaces having said pattern corresponding with the security code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A optical anti-theft system having a security code for securing a vehicle, said optical anti-theft system comprising:
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a key having a substrate and an array of reflective surfaces formed within a single track on said substrate, each reflective surface of said array of reflective surfaces having a reflectivity corresponding with a depth and forming a pattern corresponding with the security code; and a lock for receiving said key such that said key latches and unlatches said lock, said lock comprising; a light source for illuminating said array of reflective surfaces; and a light detector for sensing said illuminated array of reflective surfaces and for initiating a security function in response to the sensed illuminated array of reflective surfaces having said pattern corresponding with the security code. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A passive optical anti-theft system having a security code for securing a vehicle, said system comprising:
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a key having a linear array of reflective marks positioned along a single track for reflecting light, each of said reflective marks of said linear array of reflective marks having a reflectivity corresponding with a depth and forming a pattern corresponding with the security code and comprising; a first reflective surface for reflecting light at a first reflectivity, said first reflectivity having a first depth and representing a first logic level; and a second reflective surface for reflecting light at a second reflectivity, said second reflectivity having a second depth and representing a second logic level; a lock for receiving said key such that said key latches and unlatches said lock, said lock comprising; a directional light source for projecting light at said linear array of reflective marks of the key, said directional light source comprising; a light emitting diode for generating a directional light beam; and an optical fiber cable having a first optical fiber for coupling said light emitting diode with said linear array of reflective marks when said key is positioned within said lock; a directional receiver for optically detecting said reflectivities of each reflective mark of said linear array to provide a detected signal, said directional receiver comprising; a light sensor for sensing a light intensity for each reflective mark of said linear array; and said optical fiber cable having a second optical fiber for coupling said illuminated array of reflective surfaces with said directional receiver; and a microcontroller for comparing said detected signal with a stored signal, and for transmitting an activation signal in response to said detected signal matching the stored signal. - View Dependent Claims (26)
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Specification