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公开(公告)号：US08916780B2
公开(公告)日：2014-12-23
申请号：US14248685
申请日：2014-04-09
Applicant: Lexmark International, Inc.
Inventor： Keith Bryan Hardin , John Thomas Fessler , Paul Kevin Hall , Brian Lee Nally , Robert Lee Oglesbee
CPC classification number: H05K1/115 , H01B7/0009 , H05K1/0248 , H05K1/0286 , H05K1/0298 , H05K1/184 , H05K2201/10984
Abstract: A Z-directed signal delay line component for insertion into a printed circuit board while allowing electrical connection to internal conductive planes contained with the PCB. In one embodiment the Z-directed delay line component is housed within the thickness of the PCB allowing other components to be mounted over it. The delay line embodiments include a W-like line and a plurality of spaced apart, semi-circular line segment connected such that current flow direction alternates in direction between adjacent semi-circular line segments, each of which in other embodiments can be varied by use of shorting bars. Several Z-directed delay line components may be mounted into a PCB and serially connected to provide for longer delays. The body may contain one or more conductors and may include one or more surface channels or wells extending along at least a portion of the length of the body.
Abstract translation: 用于插入印刷电路板的Z指向信号延迟线组件，同时允许电连接到与PCB一起包含的内部导电平面。 在一个实施例中，Z向延迟线部件容纳在PCB的厚度内，允许其上的其它部件安装在其上。 延迟线实施例包括W状线和多个间隔开的半圆形线段，其连接成使得电流流动方向在相邻的半圆形线段之间交替方向交替，在其它实施例中，每一个可以通过使用来改变 的短路。 几个Z向延迟线组件可以安装到PCB中并串联连接以提供更长的延迟。 主体可以包含一个或多个导体并且可以包括沿着身体的长度的至少一部分延伸的一个或多个表面通道或孔。
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公开(公告)号：US20230110624A1
公开(公告)日：2023-04-13
申请号：US18081427
申请日：2022-12-14
Applicant: Lexmark International, Inc.
IPC: G01R33/07 , H01L21/302
Abstract: A physically unclonable function is an object that has characteristics that make it extremely difficult or impossible to copy. An array of randomly dispersed hard (magnetized) and soft (non-magnetized) magnetic particles that may be conducting or nonconducting that are disbursed in a binder create a particular magnetic field or capacitive pattern on the surface. This surface magnetic field and capacitive variations can be considered to be a unique pattern similar to fingerprint. The Hall effect prism is a sensor that measures the effects of these patterns by sensing the deformation of currents or electric potential flowing within or around a resistive substrate material that exhibits a substantial Hall effect coefficient.
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公开(公告)号：US11346903B2
公开(公告)日：2022-05-31
申请号：US17012474
申请日：2020-09-04
Applicant: Lexmark International, Inc.
Inventor： James Howard Ellis , Keith Bryan Hardin , William Pohl Corbett, Jr.
Abstract: A magnetic sensor array device is described that is constructed with multiple single sensor die, diced out of a wafer as a group and packaged in a wafer level package (WLP). The device comprises an array of multi-axis magnetic sensors that can measure the multi-dimensional magnetic field of an arbitrary sized two-dimensional region with high spatial resolution, reduced sensing distance, higher measurement throughput, tolerance to motion, improved temperature measurement, and improved yield when placed on a circuit card comprises part of an authentication system including a physical unclonable function (“PUF”), a substrate, a plurality of magnetized particles randomly dispersed in the substrate, and a PUF reader constructed using one or more of the magnetic sensor array devices wherein the PUF reader measures the magnetic field 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.
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公开(公告)号：US20220065910A1
公开(公告)日：2022-03-03
申请号：US17465593
申请日：2021-09-02
Applicant: Lexmark International, Inc.
Inventor： James Howard Ellis, JR. , Keith Bryan Hardin
Abstract: Described is an invention that adds capacitive sensing ability with a single magnetic field sensor location or distributed within an array of surfaces of the sensor. The capacitive sensing can be achieved by modifying a classic Hall effect sensor or putting separate capacitive sensor plates in close proximity to the hall effect sensor.
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公开(公告)号：US20200300935A1
公开(公告)日：2020-09-24
申请号：US16816948
申请日：2020-03-12
Applicant: Lexmark International, Inc.
IPC: G01R33/07 , H01L21/302
Abstract: A physically unclonable function is an object that has characteristics that make it extremely difficult or impossible to copy. An array of randomly dispersed hard (magnetized) and soft (non-magnetized) magnetic particles that may be conducting or nonconducting that are disbursed in a binder create a particular magnetic field or capacitive pattern on the surface. This surface magnetic field and capacitive variations can be considered to be a unique pattern similar to fingerprint. The Hall effect prism is a sensor that measures the effects of these patterns by sensing the deformation of currents or electric potential flowing within or around a resistive substrate material that exhibits a substantial Hall effect coefficient.
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Patent Agency Ranking
公开(公告)号：US10160151B2
公开(公告)日：2018-12-25
申请号：US15397829
申请日：2017-01-04
Applicant: LEXMARK INTERNATIONAL, INC.
Inventor： Keith Bryan Hardin , Zachary Charles Nathan Kratzer , Qing Zhang
IPC: H05K3/30 , B29C47/00 , H05K1/18 , H01G4/33 , H01G4/35 , B28B3/20 , B28B11/16 , H05K1/02 , H05K3/40 , B29L31/34
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 simultaneously extruding a plurality of materials according to the structure of the Z-directed component to form an extruded object and forming the Z-directed component from the extruded object. In one embodiment, the extruded object is divided into individual Z-directed components. In one embodiment, the timing of extrusion between predetermined sections of one of the materials is varied in order to stagger the sections in the extruded object.
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公开(公告)号：US10102466B2
公开(公告)日：2018-10-16
申请号：US15378917
申请日：2016-12-14
Applicant: Lexmark International, Inc.
Inventor： Roger Steven Cannon , Gary Allen Denton , Graydon Randall Dodson , Keith Bryan Hardin
Abstract: Magnetic keys having a plurality of magnetic layers having holes are disclosed. The location and orientation of the holes are controlled to generate magnetic fields that are of sufficient strength to be reliably read and sufficient complexity to be difficult to counterfeit. The magnetic keys are located on imaging-device supply items along with non-volatile memory devices containing measurements of the magnetic fields that are digitally signed. These supply items are difficult to counterfeit. Other devices are disclosed.
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公开(公告)号：US09984820B2
公开(公告)日：2018-05-29
申请号：US14475656
申请日：2014-09-03
Applicant: Lexmark International, Inc.
Inventor： Keith Bryan Hardin , John Thomas Fessler , Paul Kevin Hall , Robert Aaron Oglesbee
IPC: H01G4/12 , H01G4/012 , H01G2/06 , H01G4/00 , H01G4/005 , H01G4/228 , H05K1/18 , H05K3/40 , H01G4/28 , H05K1/02
CPC classification number: H01G2/06 , H01G4/228 , H01G4/28 , H05K1/0231 , H05K1/0233 , H05K1/0248 , H05K1/0251 , H05K1/0298 , H05K1/184 , H05K3/4046 , H05K2201/09645 , H05K2201/10015 , H05K2201/10984
Abstract: A Z-directed capacitor according to one embodiment includes a body having top, bottom and side surfaces, a cross-sectional shape that is insertable into a mounting hole in a printed circuit board, and a plurality of stacked support members. Each support member includes an annular plate mounted on a surface thereof. A first conductive side channel and a second conductive side channel are formed in the side surface and extend along a top-to-bottom dimension of the body. A first set of the annular plates electrically contact the first conductive side channel but not the second conductive side channel and a second set of the annular plates electrically contact the second conductive side channel but not the first conductive side channel. A third conductive side channel is formed in the side surface, extends along the top-to-bottom dimension of the body and is electrically separated from the annular plates.
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公开(公告)号：US20160182117A9
公开(公告)日：2016-06-23
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.
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公开(公告)号：US09319093B2
公开(公告)日：2016-04-19
申请号：US14258765
申请日：2014-04-22
Applicant: Lexmark International, Inc.
Inventor： Scott Richard Castle , John Thomas Fessler , Keith Bryan Hardin , Michael David Maul , Mark Stephen Underwood , Joseph Kamal Yackzan
CPC classification number: H04B1/40 , G06F8/65 , H04B1/1607 , H04B1/1615 , H04B1/44
Abstract: An apparatus for shipping a device containing a circuit, including a bag sized for holding the device; and an antenna connected to the bag, the antenna having a first end for coupling to the circuit of the device when the device is in the bag so as to allow for radio frequency (RF) communication with the device while the device is in the bag. Separation of the device from the bag causes the antenna to be disconnected from the circuit of the device.
Abstract translation: 一种用于运送包含电路的装置的装置，包括用于保持装置的尺寸的袋子; 以及连接到该袋的天线，该天线具有第一端，用于当该装置在袋中时与该装置的电路耦合，从而允许该装置在该袋中与该装置进行射频（RF）通信 。 将设备与袋分离使得天线与设备的电路断开连接。
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