Unlock instant, AI-driven research and patent intelligence for your innovation.

Elongated physical unclonable function

a physical unclonable function and function technology, applied in the field of physical unclonable functions, can solve the problems of counterfeit printer supplies, such as toner bottles, affecting the performance of counterfeit supplies, and affecting the quality of counterfeit supplies

Active Publication Date: 2017-04-13
LEXMARK INT INC
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution provides a robust and cost-effective method to deter counterfeiting by utilizing the unique magnetic signature of the PUF, making it difficult to replicate and ensuring the authenticity of printer supplies.

Problems solved by technology

Counterfeit printer supplies, such as toner bottles, are a problem for consumers.
Counterfeit supplies may perform poorly and may damage printers.
Ideally, a PUF cannot be identically replicated and thus is difficult to counterfeit.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Elongated physical unclonable function
  • Elongated physical unclonable function
  • Elongated physical unclonable function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015]In the following description, reference is made to the accompanying drawings where like numerals represent like elements. The embodiments are described in sufficient detail to enable those skilled in the art to practice the present disclosure. It is to be understood that other embodiments may be utilized and that process, electrical, and mechanical changes, etc., may be made without departing from the scope of the present disclosure. Examples merely typify possible variations. Portions and features of some embodiments may be included in or substituted for those of others. The following description, therefore, is not to be taken in a limiting sense and the scope of the present disclosure is defined only by the appended claims and their equivalents.

[0016]Referring to the drawings and particularly to FIG. 1, there is shown a block diagram depiction of an imaging system 50 according to one example embodiment. Imaging system 50 includes an image forming device 100 and a computer 60...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An elongate physical unclonable function (PUF) is disclosed. The PUF has a longitudinal axis and contains a plurality of small magnetic particles. A much larger magnet is positioned on the longitudinal axis to indicate a home position. A low-cost linear translation mechanism may be used to read the PUF by referencing position information to the home position. Other devices are disclosed.

Description

CROSS REFERENCES TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of Ser. No. 14 / 879,199 filed Oct. 9, 2015 and claims priority to it. The following applications are related and were filed contemporaneously: “INJECTION-MOLDED PHYSICAL UNCLONABLE FUNCTION”, “ELONGATE PHYSICAL UNCLONABLE FUNCTION”, “PHYSICAL UNCLONABLE FUNCTION ON A SUPPLY ITEM”, and “TOOTHED-RACK PHYSICAL UNCLONABLE FUNCTION”.BACKGROUND[0002]1. Field of the Disclosure[0003]The present disclosure relates generally to anti-counterfeit systems and more particularly to physical unclonable functions.[0004]2. Description of the Related Art[0005]Counterfeit printer supplies, such as toner bottles, are a problem for consumers. Counterfeit supplies may perform poorly and may damage printers. Printer manufacturers use authentication systems to deter counterfeiters. Physical unclonable functions (PUF) are a type of authentication system that implements a physical one-way function. Ideally, a PUF cannot be...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): H04L9/32
CPCH04L9/3278G09C1/00B41J2/17543B41J2/1755G03G15/0863G03G21/1875G03G2221/1823
Inventor DENTON, GARY ALLENDRUMMOND, JAMES PAULREICHERT, BRIAN ANTHONYWILLIAMSON, RANDAL SCOTT
Owner LEXMARK INT INC