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    Robotic structure calibrations
    2.
    发明授权
    Robotic structure calibrations 有权

    公开(公告)号：US11679507B2

    公开(公告)日：2023-06-20

    申请号：US16473463

    申请日：2017-04-26

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Pantelis Katsiaris ,  Guy Adams ,  Steven J. Simske

    IPC: B25J9/16 ,  G01B5/008 ,  G01B21/04

    CPC classification number: B25J9/1692 ,  G01B5/008 ,  G01B21/042

    Abstract: A method comprises moving a robotic structure to a first pose such that an end-effector of the robotic structure has an absolute position comprising an absolute location and absolute orientation. The method comprises providing a calibration artefact on the end-effector. The method comprises determining at least three planes coinciding with at least three respective surface planes of the calibration artefact, by measuring absolute locations of a plurality of points on the calibration artefact. The method comprises determining the absolute location and absolute orientation of the end-effector, when the robotic structure is in the position based on the determined at least three planes. The method also comprises calibrating the first pose of the robotic structure using the determined absolute location and absolute orientation of the end-effector.

    Printhead assembly with light emission devices and photon detectors
    3.
    发明授权
    Printhead assembly with light emission devices and photon detectors 有权

    公开(公告)号：US11338517B2

    公开(公告)日：2022-05-24

    申请号：US16076339

    申请日：2017-04-21

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Ning Ge ,  Steven J. Simske ,  Lihua Zhao ,  David George

    IPC: B29C64/393 ,  B29C64/112 ,  B29C64/282 ,  B29C64/209 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: According to examples, an apparatus may include a printhead assembly containing a housing supporting a printhead. The printhead may have nozzles that are to fire droplets of a functional agent onto a layer of build material particles along respective flight paths to form sections of a 3D object from the build material particles, an array of light emission devices to direct respective light beams in the respective flight paths, and an array of photon detectors to detect respective light beams directed from a light source of the array of light emission devices, the light emission devices and the photon detectors being supported on the housing. The apparatus may also include a controller to determine whether any of the nozzles is operating improperly based upon whether the photon detectors detected the light beams and to output an instruction regarding an improperly operating nozzle in response to a determination that the nozzle is operating improperly.

    Classification of records in a data set
    5.
    发明授权
    Classification of records in a data set 有权

    公开(公告)号：US11210556B2

    公开(公告)日：2021-12-28

    申请号：US16769766

    申请日：2018-01-25

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Jason S. Aronoff ,  Steven J. Simske

    IPC: G06K9/62 ,  G06K9/00 ,  G06K9/34

    Abstract: Techniques for classifying records in a dataset are described. The method includes identifying a set of features of a target record and assigning a scoring metric to each feature in the set of features. The method also includes processing the set of features based on the scoring metric to obtain a reduced subset of features and an expanded subset of features. The method also includes searching a store of electronic records using the reduced subset of features to obtain a reduced subset of electronic records. The method also includes searching the reduced subset of electronic records using the expanded subset of features to obtain a set of matching electronic records.

    Progressive identifier
    6.
    发明授权
    Progressive identifier 有权

    公开(公告)号：US11210487B2

    公开(公告)日：2021-12-28

    申请号：US16629616

    申请日：2017-07-14

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Malgorzata M. Sturgill ,  Steven J. Simske ,  A. Marie Vans

    IPC: G06K7/14

    Abstract: An example system includes a stage identification portion to determine a stage in a progression of a progressive identifier, and an identifier encoding portion to encode or read the progressive identifier. A number or percentage of bits of the progressive identifier encoded, or read as encoded, by the identifier encoding portion is uniquely associated with the stage in the progression.

    M-ary cyclic coding
    8.
    发明授权
    M-ary cyclic coding 有权

    公开(公告)号：US10891704B2

    公开(公告)日：2021-01-12

    申请号：US16816603

    申请日：2020-03-12

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Steven J. Simske ,  Robert Ulichney ,  Matthew D. Gaubatz

    IPC: G06T1/00 ,  G06K19/06

    Abstract: An example method is described in which a processor receives a first plurality of symbols selected from a first set of symbols, translates the first plurality of symbols into a second plurality of symbols selected from an M-ary cyclic symbol set, and writes the second plurality of symbols to a surface. An additional example method is described in which a processor captures an image of at least a portion of a surface, detects a first plurality of symbols from the image, where the first plurality of symbols comprises symbols selected from an M-ary cyclic symbol set, translates the first plurality of symbols into a second plurality of symbols selected from a second set of symbols, and performs at least one task responsive to the second plurality of symbols.

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