Lexmark International, Inc.

Samuel Leo Rhodus

Brant Dennis Nystrom

Robert Henry Muyskens

Scott Richard Castle

Thomas Eugene Pangburn

Forrest Steely

Gary Allen Denton

Neilson Gutay Navarrete

Hyeob Kim

Tristan Santos Dalay

Carl Edmond Sullivan

David Zachery Lindsey, Jr

Kenneth Ross Wilkerson

The use of a magnetic particle based 'PUF' (Physically Unclonable Function) disk, when read by magnetic sensor(s), as a positional encoder is described. It is often necessary to include a linear or rotary encoder within a device for tracking motor movements, or to enable a closed-loop control algorithm on the motor system. These randomly dispersed magnetic particle disks can be used as a positional encoder, where the speed of movement and the direction of movement may be monitored.

Physical unclonable function encoder

A physical unclonable function ('PUF') object can be used to encode the geography or region in which device to which the PUF is attached may operate. Disclosed are two potential ways to regionalize a device using a PUF disk: placing the magnetic sensor at a different radius depending on the region or geography intended for sale; and altering the magnetic structure of the disk to magnetically encode the region into the sensor data.

Physical unclonable function (PUF) alters disk structure to encode region

Magnetic PUFs (Physical Unclonable Function) may utilizes a single 3-axis Hall-effect sensor for enrollment. When a PUF is manufactured, a Hall-effect sensor is used to model the PUF disk and store that data where it may be accessed. This process is called 'enrollment.' This invention improves upon the PUF implementation by introducing controlled variability into the enrollment, the reading of the PUF data from the Hall-effect sensors (the number and position of read sensors), the sampling method of the read sensor(s), and the processing of the PUF data.

Physical unclonable function variable read sensor

Unique physical unclonable function objects are created by molding pre-magnetized or post-magnetized particles into a resin. The particles form a unique physical 'fingerprint' based on the random particle size, position, polar rotation, magnetization level, particle density, etc. This invention addresses devices for accurately measuring the physical fingerprint of a PUF, specifically including the X, Y, & Z components of the magnetic field at enough discrete points on the PUF to allow a confident recognition of the identification. A structural element to which a PUF tag is affixed is described that may be used to scan the PUF tag with a smartphone magnetometer by swiping the structural element along the side of the phone and controlling the position of the PUF tag with guides.

Device and method for scanning the physical signature data of a physical unclonable function with a smartphone

Notary stamp physical unclonable function reader frame

Three dimensional faceted identification chip

Frame for printer

Printer

Hair straightener with flat sides

A mobile computing device hosts an operating system and mobile applications. A provisioning application communicates with a secure element and near field communication (NFC) subsystem. It causes display of an interface for users to enter personal attributes for storage in the secure element. Users discriminately select items from their personal attributes for transmission to a third party recipient so only attributes relative to the third party are sent. Software, interfaces, methods, and apparatus typify the embodiments.

Provisioning user attributes for use with mobile computing device

It is a first aspect of the present disclosure to provide a computer implemented method of enabling, by a mobile device, a peripheral device connected to a network that includes establishing a connection with the peripheral device when the peripheral device fails to communicate with the network; querying the peripheral device for a document; receiving a document from the peripheral device; processing the document; and sending the processed document to the peripheral device.

Process enablement in network downtime condition

It is a first aspect of the present disclosure to provide a computer implemented method of enabling a peripheral device connected to a network during an inactive communication with the network, that includes activating an ad-hoc network connection with a mobile device during the inactive communication of the peripheral device with the network; transmitting a document to the mobile device for processing; receiving the processed document from the mobile device; storing the processed document in a memory of the peripheral device; and sending the processed document to a remote storage location once the peripheral device is determined to be actively communicating with the network.

A method of printing includes providing a computer server linked to a plurality of printers, initiating a print job on a user computer device, querying the computer server for one or more available printers; transmitting identification information and location information of each printer from the computer server to the user computer device; displaying the information in the form of a list to the user computer device; selecting by a user one of the printers in the list; transmitting the selection to the computer server; transmitting configuration information for the selected printer to the user computer device; configuring the print data by with the configuration information; and transmitting the configured print data from the user computer device to the selected printer for printing.

Growing community of inventors

Lexington, KY, United States of America

Samuel Leo Rhodus