Multi-tiered tamper-resistant assembly system and method

Patent metadata

Field	Value
Publication number	US-9756273-B2
Application number	US-201514638808-A
Country	US
Kind code	B2
Filing date	Mar 4, 2015
Priority date	Mar 4, 2015
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

A multi-tiered approach to combating reverse engineering of electronics is disclosed herein. The encapsulant utilized with the optical sensor may be selected based on being substantially being opaque to X-ray inspection. In this way, visible public inspection to gain competitive intelligence may be reduced and operation of the electronics may remain unaffected. Additionally, a thin filament of wire embedded just below the surface of the encapsulant could be used as an electronic tripwire in response to being severed and/or dissolved by the reverse engineering strong solvents and acids.

First claim

What is claimed is:

1. An imaging device comprising:
a short-wavelength infrared focal plane array;
a readout integrated circuit encased in an encapsulant, wherein the encapsulant is embedded with high-radiopacity particulates comprising a Z value greater than 50; and
an electronic tripwire coupled to the readout integrated circuit configured to render the readout integrated circuit useless for reverse engineering in response to the electronic tripwire being severed,
wherein the electronic tripwire is configured to dissolve in a solution,
the solution configured to dissolve the encapsulant, and
the readout integrated circuit resistant to being dissolved by the solution,
wherein the electronic tripwire is coupled to a power source, and
the trip wire prevents a charge from being released from the power source and dissipated through the readout integrated circuit.

2. The imaging device of claim 1 , wherein the electronic tripwire is integral to operation of the readout integrated circuit during normal operation of the readout integrated circuit.

3. The imaging device of claim 1 , wherein the high-radiopacity particulates are selected from a group comprising barium sulfate, bismuth subcarbonate, bismuth oxychloride, and tungsten carbide.

4. The imaging device of claim 1 , wherein the encapsulant is embedded with monochromating crystals.

5. The imaging device of claim 1 , wherein the electronic tripwire is at least one of copper, silver, or nickel.

6. The imaging device of claim 1 , wherein the electronic tripwire is configured to transmit electronic signals.

7. An encapsulant comprising:
high-radiopacity particulates embedded in the encapsulant, wherein the high-radiopacity particulates comprises a Z value greater than 50; and
an electronic tripwire embedded in the encapsulant, wherein the electronic tripwire is configured to be coupled to an integrated circuit configured to render the integrated circuit inoperable for signal processing in response to the electronic tripwire being severed,
wherein the electronic tripwire is configured to dissolve in a solution,
the solution configured to dissolve the encapsulant,
the readout integrated circuit resistant to being dissolved by the solution, and
the dissolving acts to trigger the electronic tripwire;
wherein the electronic tripwire is configured to be coupled to a power source, and
the trip wire prevents a charge from being released from the power source and dissipated through the readout integrated circuit.

8. The encapsulant of claim 7 , wherein the high-radiopacity particulates are selected from a group of barium sulfate, bismuth subcarbonate, bismuth oxychloride, or tungsten carbide.

9. The encapsulant of claim 7 , wherein the encapsulant is embedded with monochromating crystals.

10. The imaging device of claim 1 , wherein the charge is released in response to the trip wire being severed.

Assignees

• Sensors Unlimited Inc

Inventors

• Foster John T
• Tagle John
• Zhilinsky Dmitry
• Liland Michael A
• Kovacs Laszlo
• Gonzales Leonardo C

Classifications

• H10W74/473 Primary

  containing a filler · CPC title

• H10W74/43

  comprising oxides, nitrides or carbides, e.g. ceramics or glasses · CPC title

• H10W42/40

  protecting against tampering, e.g. unauthorised inspection or reverse engineering · CPC title

• H10W42/25

  against alpha rays, e.g. for outer space applications · CPC title

• G06T5/40 Primary

  using histogram techniques · CPC title