公开(公告)号：US20150173207A1

公开(公告)日：2015-06-18

申请号：US14631192

申请日：2015-02-25

Applicant: Lexmark International, Inc.

Inventor： Keith Bryan Hardin ,  Paul Kevin Hall ,  Qing Zhang ,  John Thomas Fessler

IPC: H05K3/30

CPC classification number: H05K3/301 ,  H05K1/0222 ,  H05K1/0231 ,  H05K1/0233 ,  H05K1/0251 ,  H05K1/0298 ,  H05K1/184 ,  H05K3/306 ,  H05K3/4046 ,  H05K2201/09645 ,  H05K2201/09809 ,  H05K2201/10015 ,  H05K2201/10893 ,  H05K2201/10984 ,  Y10T29/4913 ,  Y10T29/49135

Abstract: A method for forming a Z-directed component for insertion into a mounting hole in a printed circuit board according to one example includes filling a first cavity having a tapered surface with a body material. A first layer of a constraining material is provided on top of the first cavity and has a second cavity having a width that is smaller than the first cavity. The second cavity is filled with the body material. Successive layers of the constraining material are provided on top of the first layer of the constraining material. Cavities of the successive layers of the constraining material are selectively filled with at least the body material to form layers of the main body portion of the Z-directed component. The constraining material is dissipated to release the Z-directed component from the constraining material and the Z-directed component is fired.

Abstract translation: 根据一个示例的用于形成用于插入到印刷电路板的安装孔中的Z定向部件的方法包括用主体材料填充具有锥形表面的第一腔体。 约束材料的第一层设置在第一空腔的顶部上，并具有第二腔，其宽度小于第一空腔。 第二个空腔充满了主体材料。 约束材料的连续层设置在约束材料的第一层的顶部上。 约束材料的连续层的空腔至少选择性填充主体材料，以形成Z向分量的主体部分的层。 消融约束材料以将约束材料释放Z定向的成分，并且对Z指向的元件进行烧制。

公开(公告)号：US20220410612A1

公开(公告)日：2022-12-29

申请号：US17902779

申请日：2022-09-02

Applicant: Lexmark International, Inc.

Inventor： Keith Bryan Hardin

IPC: B42D25/369 ,  B42D25/45 ,  B42D25/373

Abstract: The invention adds a Physical Information Layer (“PIL”) to the magnetic particles within a matrix that creates an unclonable physical unclonable function “object.” The PIL assists in searching to find the combination that matches a pre-determined enrolled combination with additional information that includes a search index, which limits the range of data required to search in order to find a match in the enrolled database. The index could be a predetermined value that associates the random magnetic profile values to a list of enrolled values in a database. The additional information may include product or general information that needs to be easily communicated to a user of the PUF.

公开(公告)号：US20210252901A1

公开(公告)日：2021-08-19

申请号：US16817027

申请日：2020-03-12

Applicant: Lexmark International Inc.

Inventor： Keith Bryan Hardin

IPC: B42D25/369 ,  B42D25/373 ,  B42D25/45

Abstract: The invention adds a Physical Information Layer (“PIL”) to the magnetic particles within a matrix that creates an unclonable physical unclonable function “object.” The PIL assists in searching to find the combination that matches a pre-determined enrolled combination with additional information that includes a search index, which limits the range of data required to search in order to find a match in the enrolled database. The index could be a predetermined value that associates the random magnetic profile values to a list of enrolled values in a database. The additional information may include product or general information that needs to be easily communicated to a user of the PUF.

公开(公告)号：US10921393B2

公开(公告)日：2021-02-16

申请号：US16429710

申请日：2019-06-03

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： William Pohl Corbett ,  Gary Allen Denton ,  James Paul Drummond ,  Keith Bryan Hardin ,  Kelly Ann Killeen ,  Randal Scott Williamson

IPC: G01R33/12 ,  G01R33/00 ,  H04L9/32 ,  G01R33/02 ,  G06K19/06 ,  B41J2/175 ,  G03G21/18 ,  G06K7/08 ,  G01R33/07

Abstract: A system for use in authentication processes is described comprising a physical unclonable function (“PUF”), a substrate, a plurality of magnetized particles randomly dispersed in the substrate, a PUF reader constructed using multiple discrete magnetometer chips that have magnetic field sensors, placed on a circuit card in an array with a sufficient center to center spacing between sensing elements of adjacent magnetometer chips, wherein the PUF reader measures the magnetic field data at multiple locations in close proximity to the magnetized particles. The measured magnetic field data may be compared to previously enrolled data to assess authenticity.

公开(公告)号：US20150186694A1

公开(公告)日：2015-07-02

申请号：US14145433

申请日：2013-12-31

Applicant: Lexmark International, Inc.

Inventor： John Thomas Fessler ,  Keith Bryan Hardin ,  Julie Ann Gordon Whitney

IPC: G06K7/10

CPC classification number: G06K19/0711

Abstract: A RFID based system, including an RFID tag to communicate with a reader and having a motion-based generator generating current upon the device being moved. When the object moves, the RFID tag is configured to transmit at least one signal to the reader using the current generated by the motion-based generator to indicate that the object is in use. The RFID tag may include an energy scavenging circuit such that the RFID tag is also capable of being interrogated by the reader and perform additional operations, independent of the motion-based generator.

Abstract translation: 一种基于RFID的系统，包括与读取器通信的RFID标签，并且具有基于运动的发生器在移动设备时产生电流。 当物体移动时，RFID标签被配置为使用由基于运动的发生器产生的电流来向读取器发送至少一个信号以指示对象正在使用中。 RFID标签可以包括能量清除电路，使得RFID标签也能够被读取器询问并且执行额外的操作，而与基于运动的发生器无关。

公开(公告)号：US20150126137A1

公开(公告)日：2015-05-07

申请号：US14072484

申请日：2013-11-05

Applicant: Lexmark International, Inc.

Inventor： Scott Richard Castle ,  John Thomas Fessler ,  Keith Bryan Hardin ,  Michael David Maul ,  Mark Stephen Underwood ,  Joseph Kamal Yackzan

IPC: H04B1/40

CPC classification number: H04B1/40 ,  G06F8/65 ,  H04B1/1607 ,  H04B1/1615 ,  H04B1/44

Abstract: An apparatus for performing operations using low power, including control circuitry; a radio frequency (RF) circuit for receiving RF signals at one or more frequencies; an internal power source; and switching circuitry coupled between the control circuitry and the internal power source, the switching circuitry having a control terminal coupled to an output of the RF circuit. The apparatus is configured in a normal mode of operation and an off mode of operation in which the apparatus is powered down, and wherein in the off mode of operation energy from the received RF signals control a state of the switching circuitry to selectively couple the internal power source with the control circuitry for performing one or more operations.

Abstract translation: 一种用于使用低功率执行操作的装置，包括控制电路; 用于以一个或多个频率接收RF信号的射频（RF）电路; 内部电源; 以及耦合在所述控制电路和所述内部电源之间的开关电路，所述开关电路具有耦合到所述RF电路的输出端的控制端子。 该装置被配置为正常操作模式和关闭操作模式，其中设备断电，并且其中在关闭操作模式下，来自接收到的RF信号的能量控制开关电路的状态以选择性地耦合内部 具有用于执行一个或多个操作的控制电路的电源。

公开(公告)号：US20140237816A1

公开(公告)日：2014-08-28

申请号：US14268265

申请日：2014-05-02

Applicant: LEXMARK INTERNATIONAL, INC.

Inventor： Paul Kevin Hall ,  Keith Bryan Hardin ,  Zachary Charles Nathan Kratzer ,  Qing Zhang

IPC: H05K3/10

CPC classification number: H05K3/108 ,  H05K1/0231 ,  H05K1/0233 ,  H05K1/0248 ,  H05K1/0251 ,  H05K1/184 ,  H05K3/4046 ,  H05K2201/09645 ,  Y10T29/49105 ,  Y10T29/49117 ,  Y10T29/49124 ,  Y10T29/49139 ,  Y10T29/49155 ,  Y10T29/49158 ,  Y10T29/49204

Abstract: A method for manufacturing a Z-directed component for insertion into a mounting hole in a printed circuit board according to one example embodiment includes extruding a substrate material according to the shape of the Z-directed component. A conductive material is then selectively applied to the extruded substrate material and the Z-directed component is formed from the extruded substrate material.

Abstract translation: 根据一个示例实施例的用于制造用于插入到印刷电路板的安装孔中的Z定向部件的方法包括根据Z指向部件的形状挤出基底材料。 然后将导电材料选择性地施加到挤出的基底材料上，并且由挤出的基底材料形成Z指向的部件。