-
公开(公告)号：US20190111693A1
公开(公告)日：2019-04-18
申请号：US16218229
申请日：2018-12-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jefferson P. Ward , Stephen D. Panshin
Abstract: In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.
-
公开(公告)号：US10214019B2
公开(公告)日：2019-02-26
申请号：US14863902
申请日：2015-09-24
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Iain Campbell-Brown , Mark Walsh , John Oliver , Jefferson P. Ward , Amy Shipman
Abstract: Example circuits and methods are described involving a flexible substrate for a fluid cartridge, comprising an integrated circuit connected to the flexible substrate, and electrical connector pads arranged on the flexible substrate for connection to the integrated circuit.
-
公开(公告)号：US09852282B2
公开(公告)日：2017-12-26
申请号：US14904639
申请日：2013-07-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Paul L. Jeran , Stephen D. Panshin , Jefferson P. Ward
CPC classification number: G06F21/44 , B41J2/17546 , G06F21/445 , H04L9/3247
Abstract: A non-transitory memory storing a digital signature of a consumable product where the digital signature indicates that an identifier and host device setting data are from a trusted source.
-
公开(公告)号：US20170366350A1
公开(公告)日：2017-12-21
申请号：US15469129
申请日：2017-03-24
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Erik D. Ness , Stephen D. Panshin , Jefferson P. Ward
CPC classification number: H04L9/3226 , B41J2/17543 , B41J2/17546 , G06F12/1408 , G06F12/1458 , G06F2212/402 , H04L9/3236 , H04L9/3273
Abstract: A replaceable item for a host device includes a non-volatile memory and logic. The non-volatile memory stores passwords or authentication values, and/or a cryptographic key. The logic permits retrieval of a predetermined maximum number of the passwords from the non-volatile memory to authenticate the replaceable item within the host device. The predetermined maximum number of the passwords is less than the total number of the passwords.
-
公开(公告)号：US09811037B2
公开(公告)日：2017-11-07
申请号：US15409063
申请日：2017-01-18
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Paul L. Jeran , Shell S. Simpson , Stephen D. Panshin , Jefferson P. Ward
CPC classification number: G03G15/5091 , B41J2/17543 , B41J2/17546 , G06F21/44 , G06F21/608 , G06F21/73 , G06F2221/2111 , G06F2221/2129 , G06F2221/2135 , G06F2221/2149 , H04L9/14 , H04L9/30 , H04L9/3247 , H04L63/0435
Abstract: In some examples, a device authenticates a first consumable product installed in the device, sends a first identifier of the authenticated first consumable product over a network to an engine, receives, over the network from the engine, a list of identifiers for consumable products classified as non-authentic, and in response to installation of a second consumable product in the device that stores an identifier in memory, determines whether the identifier of the second consumable product matches one of the identifiers in the received list of identifiers.
-
Patent Agency Ranking
36.发明授权公开(公告)号：US09800765B2
公开(公告)日：2017-10-24
申请号：US15432064
申请日：2017-02-14
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jay S. Gondek , Stephen J. Nichols , Jefferson P. Ward
CPC classification number: H04N1/6019 , B41J2/17546 , G03G15/0863 , G03G21/1878 , G03G21/1889 , G06K15/1868 , G06K15/1878 , H04N1/6072 , H04N1/6097
Abstract: In one example in accordance with the present disclosure a printer cartridge and memory device containing a representation of a compressed multi-dimensional color table is described. The color table includes at least one low dimensional portion of the multi-dimensional color table storing color transformation information at a first resolution and a number of remaining portions of the multi-dimensional color table storing color transformation information at a second resolution. In the color table, the first resolution is greater than the second resolution and the at least one compressed multi-dimensional color table is to generate a high resolution uncompressed multi-dimensional color table the high resolution being at least as great as the first resolution.
-
公开(公告)号：US09800764B2
公开(公告)日：2017-10-24
申请号：US15428343
申请日：2017-02-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jay S. Gondek , Stephen J. Nichols , Jefferson P. Ward
CPC classification number: H04N1/6019 , G03G15/0863 , G06K15/02 , H04N1/00538
Abstract: A printer cartridge includes a memory device and at least one compressed color table stored on the memory device. A compressed color table includes a losslessly compressed neutral axis, a number of nodes that correspond to seed color table nodes and a number of delta nodes that correspond to a number of delta tables. The number of delta tables indicate differences between interpolated color table nodes and corresponding actual color table nodes.
-
公开(公告)号：US20170161864A1
公开(公告)日：2017-06-08
申请号：US15428343
申请日：2017-02-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jay S. Gondek , Stephen J. Nichols , Jefferson P. Ward
IPC: H04N1/60
CPC classification number: H04N1/6019 , G03G15/0863 , G06K15/02 , H04N1/00538
Abstract: A printer cartridge includes a memory device and at least one compressed color table stored on the memory device. A compressed color table includes a losslessly compressed neutral axis, a number of nodes that correspond to seed color table nodes and a number of delta nodes that correspond to a number of delta tables. The number of delta tables indicate differences between interpolated color table nodes and corresponding actual color table nodes.
-
公开(公告)号：US20170157941A1
公开(公告)日：2017-06-08
申请号：US15428435
申请日：2017-02-09
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Stephen J. Nichols , Jay S. Gondek , Jefferson P. Ward
IPC: B41J2/175
CPC classification number: B41J2/17543 , B41J2/17546 , G03G15/0863 , G03G21/1878 , G03G21/1889 , G06K15/021 , G06K15/027 , G06K15/1868 , G06K15/1878 , H04N1/6019 , H04N1/603 , H04N1/6097
Abstract: A transform wrapper is stored on a memory device and the memory device may be included in a printer cartridge. The transform wrapper may dynamically build a transform map for a printer based on metadata stored at the memory device. The metadata may indicate at least one of a type of depositing material, transform map, print media and printer.
-
公开(公告)号：US09639794B2
公开(公告)日：2017-05-02
申请号：US14879656
申请日：2015-10-09
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Stephen D. Panshin , Jefferson P. Ward , David B. Novak
CPC classification number: G06K15/4095 , G06F8/65 , G06F21/44 , G06F21/572 , G06F21/608 , G06F2221/2129 , G06F2221/2153 , G06K2215/002
Abstract: Example secure upgrade supplies and methods are disclosed. A disclosed example upgrade supply cartridge structured includes a chamber to store a material useable by the imaging forming apparatus to form an image on media; a security device to provide an authentication credential to an image forming apparatus, the authentication credential useable to authenticate an identity of the upgrade supply cartridge; and a tamperproof data storage including upgrade data useable by the image forming apparatus to activate a capability included but disabled in the image forming apparatus, the tamperproof data storage structured to store an identifier of the image forming apparatus after the upgrade supply cartridge has been utilized by the image forming apparatus to activate the disabled capability.
-
-
-
-
-
-
-
-
-
Search Results
121
records
(took 0.027 seconds)
