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公开(公告)号：US20210326621A1
公开(公告)日：2021-10-21
申请号：US17257871
申请日：2019-01-11
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jan Allebach , Richard E. Maggard , Renee J. Jessome , Mark Q. Shaw , Runzhe Zhang
Abstract: In an example method, an image of a printed document is descreened. The descreened image is separated into blocks. A smooth area of the descreened image is selected based on an averaging of localized color distance values of pixels in each of the blocks. A streak in a block of the smooth area is detected in response to detecting that a magnitude of a color distance projection of the block exceeds a threshold value.
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公开(公告)号：US20200077104A1
公开(公告)日：2020-03-05
申请号：US16675583
申请日：2019-11-06
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Mark Q. Shaw , Jan P. Allebach , Edward J. Delp
IPC: H04N19/182 , H04N19/17 , H04N19/167 , H04N19/10 , H04N19/51 , H04N21/234 , H04N19/117 , H04N19/186 , H04N19/82
Abstract: A video coder includes a processing resource and a non-transitory storage device containing instructions executable by the processing resource to compute a weighted α frame based on a saliency map and a α frame. The saliency map is to indicate the relative importance of each pixel in a current frame based on its perceptual significance. The α frame is to include differences between corresponding pixels in a current frame and a motion predicted frame.
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公开(公告)号：US20190275807A1
公开(公告)日：2019-09-12
申请号：US16426844
申请日：2019-05-30
Inventor： Mark Q. Shaw , Paul Jeran , Sean Michael Collison , Terry M. Nelson , Chuohao Tang , Amy Ruth Reibman , Jan P. Allebach
Abstract: In some examples, a component for a printing device includes a memory device comprising a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing. The respective corrective data includes a plurality of residual values to transform the nodes of the reference color table to a customized color table for use with a selected media type of the plurality of media types.
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公开(公告)号：US10306111B2
公开(公告)日：2019-05-28
申请号：US15986915
申请日：2018-05-23
Inventor： Chuohao Tang , Sean Michael Collison , Amy Ruth Reibman , Mark Q. Shaw , Jan P. Allebach , Jay S. Gondek
Abstract: In some examples, a print cartridge includes a memory device comprising quantized coefficients derived from a lossy compression, at a selected step size, of a difference color table including a plurality of difference nodes in which each difference node represents a difference value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the quantized coefficients useable to produce a reconstructed difference color table including a first set of difference nodes each representing a difference value that is within an error threshold at the selected step size, and a second set of difference nodes each representing a difference value that is outside an error threshold at the selected step size. The memory device further comprises corrective information to correct the second set of difference nodes of the reconstructed difference color table.
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公开(公告)号：US20190082077A1
公开(公告)日：2019-03-14
申请号：US16188421
申请日：2018-11-13
Inventor： Zhenhua Hu , Chuohao Tang , Terry M. Nelson , Mark Q. Shaw , Jan P. Allebach , Amy Ruth Reibman
CPC classification number: H04N1/603 , B41J2/17546 , H04N1/00538 , H04N1/41 , H04N1/6008 , H04N1/6019 , H04N1/6058
Abstract: In some examples, a print cartridge component includes a memory device comprising coefficients based on a compression of a difference table including a plurality of difference nodes in which each difference node represents a value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the coefficients useable to produce a reconstructed difference table, and residue information representing a difference of the color table and the reconstructed difference table.
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Patent Agency Ranking
公开(公告)号：US20180013929A1
公开(公告)日：2018-01-11
申请号：US15611462
申请日：2017-06-01
Inventor： Chuohao Tang , Sean Michael Collison , Amy Ruth Reibman , Mark Q. Shaw , Jan P. Allebach , Jay S. Gondek
Abstract: In some examples, a print cartridge includes a memory device comprising quantized coefficients derived from a lossy compression, at a selected step size, of a difference color table including a plurality of difference nodes in which each difference node represents a difference value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the quantized coefficients useable to produce a reconstructed difference color table including a first set of difference nodes each representing a difference value that is within an error threshold at the selected step size, and a second set of difference nodes each representing a difference value that is outside an error threshold at the selected step size. The memory device further comprises corrective information to correct the second set of difference nodes of the reconstructed difference color table.
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公开(公告)号：US20180013928A1
公开(公告)日：2018-01-11
申请号：US15702138
申请日：2017-09-12
Inventor： Mark Q. Shaw , Paul Jeran , Sean Michael Collison , Terry M. Nelson , Chuohao Tang , Amy Ruth Reibman , Jan P. Allebach
IPC: H04N1/60 , B41J2/525 , B41J29/393 , H04N1/41
CPC classification number: H04N1/6025 , B41J2/525 , B41J29/393 , H04N1/00538 , H04N1/2369 , H04N1/41 , H04N1/6019 , H04N1/603 , H04N1/6055 , H04N1/6058 , H04N1/6097 , H04N2201/0094
Abstract: In some examples, a supply component for a printing device includes a memory device comprising a plurality of corrective data to produce a corresponding plurality of color tables each customized for a respective media type of a plurality of media types, wherein a respective corrective data of the plurality of corrective data corresponds to nodes of a reference color table for the printing device that is able to accept the plurality of media types for printing. The respective corrective data includes a plurality of residual values to transform the nodes of the reference color table to a customized color table for use with a selected media type of the plurality of media types.
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公开(公告)号：US11367173B2
公开(公告)日：2022-06-21
申请号：US17256726
申请日：2018-12-06
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Darrel D. Cherry , Kristofer D. Provencio , Mark Q. Shaw
Abstract: According to examples, an apparatus may include a processor and a non-transitory computer readable medium that the processor may execute to determine whether a token is to be printed printed onto the medium, following printing onto the medium in a printing system, cause a scan bar in a media feed path of the printing system to capture an image of the printed medium. The processor may also determine, from the captured image of the printed medium, whether the token was properly printed onto the printed medium and, based on a determination that the token was not properly printed onto the printed medium, output an indication and/or an instruction corresponding to the token being improperly printed.
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公开(公告)号：US20220006919A1
公开(公告)日：2022-01-06
申请号：US16764995
申请日：2019-07-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Terry M. Nelson , Mark Q. Shaw
IPC: H04N1/405
Abstract: In some examples, a printing device component includes a memory device comprising compressed coefficients that, when decompressed by a printing device, form difference entries, wherein a difference entry of the difference entries represents a difference of a value of a corresponding entry of a halftone table and a value of a corresponding entry of a reference table. The memory device further includes healing parameter values specifying a healing process to apply to a reconstructed halftone table produced using the coefficients.
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公开(公告)号：US10674043B2
公开(公告)日：2020-06-02
申请号：US15611462
申请日：2017-06-01
Inventor： Chuohao Tang , Sean Michael Collison , Amy Ruth Reibman , Mark Q. Shaw , Jan P. Allebach , Jay S. Gondek
Abstract: In some examples, a print cartridge includes a memory device comprising quantized coefficients derived from a lossy compression, at a selected step size, of a difference color table including a plurality of difference nodes in which each difference node represents a difference value that is a difference of a value of a node of a color table and a value of a corresponding node of a reference table, the quantized coefficients useable to produce a reconstructed difference color table including a first set of difference nodes each representing a difference value that is within an error threshold at the selected step size, and a second set of difference nodes each representing a difference value that is outside an error threshold at the selected step size. The memory device further comprises corrective information to correct the second set of difference nodes of the reconstructed difference color table.
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