公开(公告)号：US11366913B2

公开(公告)日：2022-06-21

申请号：US16495248

申请日：2018-12-03

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

Inventor： Stephen D. Panshin ,  Jefferson P. Ward ,  Scott A. Linn ,  James Michael Gardner

IPC: G06F21/60 ,  B41J2/175 ,  G06F21/44 ,  G06F21/84

Abstract: In an example, a logic circuitry package is configured to communicate with a print apparatus logic circuit. The logic circuitry package may be configured to respond to communications sent to a first address and to at least one second address. The logic circuitry package may comprise a first logic circuit, wherein the first address is an address for the first logic circuit. The package may be configured such that, in response to a first command indicative of a task and a first time period sent to the first address, the package is accessible via at least one second address for a duration of the time period.

公开(公告)号：US11345157B2

公开(公告)日：2022-05-31

申请号：US16768205

申请日：2019-10-25

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

Inventor： Sirena Lu ,  Rogelio Cicili ,  James Michael Gardner ,  Scott A. Linn

IPC: B41J2/175 ,  B41J2/045 ,  G06F13/42 ,  G06F21/44 ,  G06F1/12 ,  G06F1/08 ,  H03K19/0175 ,  B33Y30/00 ,  B29C64/259 ,  G06F3/12 ,  G01F23/24 ,  G01F23/80

Abstract: A logic circuitry package for a replaceable print apparatus component comprises at least one logic circuit and an interface to communicate with a print apparatus logic circuit. The at least one logic circuit is configured to receive, via the interface, calibration parameters including an offset parameter and a sensor ID. The at least one logic circuit is configured to output, via the interface, a digital value corresponding to the sensor ID and offset based on the offset parameter.

公开(公告)号：US11345156B2

公开(公告)日：2022-05-31

申请号：US16767584

申请日：2019-10-25

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

Inventor： Scott A. Linn

IPC: B41J2/175 ,  B41J2/045 ,  G06F13/42 ,  G06F21/44 ,  G06F1/12 ,  G06F1/08 ,  H03K19/0175 ,  B33Y30/00 ,  B29C64/259 ,  G06F3/12 ,  G01F23/24 ,  G01F23/80

Abstract: A logic circuitry package for a replaceable print apparatus component includes an interface to communicate with a print apparatus logic circuit and at least one logic circuit. The at least one logic circuit is configured to receive, via the interface, a request to replace an internal clock signal from an internal clock generator of the logic circuitry package with an external test clock signal. The at least one logic circuit is configured to receive, via the interface, the external test clock signal. The at least one logic circuit is configured to replace the internal clock signal with the external test clock signal in the logic circuitry package.

公开(公告)号：US11331925B2

公开(公告)日：2022-05-17

申请号：US16965825

申请日：2019-04-05

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

Inventor： James Michael Gardner ,  Scott A. Linn ,  Jefferson P. Ward ,  David N. Olsen ,  Anthony D. Studer ,  Michael W. Cumbie ,  Sirena Chi Lu

IPC: G06F3/12 ,  B41J2/175 ,  B41J29/393 ,  G01L23/08 ,  G06F13/42 ,  G06F21/44 ,  G06K15/00 ,  B33Y50/00 ,  G03G15/08 ,  G06K15/10

Abstract: A sensor circuit for a replaceable print apparatus component comprises an interface to transmit signals with respect to a print apparatus logic circuit, and further comprises, connected to the interface, at least two sensor cell arrays, each array including nominally the same cells, the cells of one array being nominally different than the cells of the other array, and at least one single cell sensor that is nominally different than the other cells.

公开(公告)号：US11331911B2

公开(公告)日：2022-05-17

申请号：US16956350

申请日：2019-02-06

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

Inventor： James M. Gardner ,  Scott A. Linn

IPC: B41J2/045 ,  B41J2/14

Abstract: A die for a printhead is provided in examples. The die includes a memory voltage regulator disposed on the die, and a high-voltage protection switch disposed on the die in a path of a conductive connection between the memory voltage regulator and a sense bus.

公开(公告)号：US11325374B2

公开(公告)日：2022-05-10

申请号：US16957520

申请日：2019-02-06

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

Inventor： Scott A. Linn ,  James M. Gardner

IPC: B41J2/045 ,  B41J29/38

Abstract: An integrated circuit is disclosed. The integrated circuit includes an actuator to eject a fluid in response to a fire signal. The integrated circuit also includes a monitor circuit set by the fire signal to block the fire signal to the actuator circuit after a selected duration.

公开(公告)号：US11141973B2

公开(公告)日：2021-10-12

申请号：US16956316

申请日：2019-02-06

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

Inventor： Scott A. Linn ,  James Michael Gardner ,  Michael W. Cumbie

IPC: B41J2/045

Abstract: An integrated circuit to drive a plurality of fluid actuation devices includes a plurality of memory cells, a select circuit, configuration logic, and control logic. Each memory cell corresponds to a fluid actuation device. The select circuit selects fluid actuation devices and memory cells corresponding to the selected fluid actuation devices. The configuration logic enables or disables access to the plurality of memory cells. The control logic either activates the selected fluid actuation devices or accesses the memory cells corresponding to the selected fluid actuation devices based on a state of the configuration logic.

公开(公告)号：US20210224005A1

公开(公告)日：2021-07-22

申请号：US16769765

申请日：2019-02-06

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

Inventor： James Michael Gardner ,  Berkeley Fisher ,  Scott A. Linn

IPC: G06F3/12 ,  G11C16/12 ,  G11C16/10 ,  G11C16/34

Abstract: In some examples, a fluid dispensing device component includes an input to receive a control signal from the fluid dispensing system, the control signal for activating fluidic actuators during a fluidic operation mode. The fluid dispensing device component further includes a nonvolatile memory, and a controller to, during a memory write mode, write a first portion of the nonvolatile memory to a first programmed level responsive to application of a first programming voltage and activation of the control signal, and write a second portion of the nonvolatile memory to a second programmed level responsive to application of a second programming voltage different from the first programming voltage and activation of the control signal.

公开(公告)号：US10926548B2

公开(公告)日：2021-02-23

申请号：US16094138

申请日：2016-04-29

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

Inventor： Daryl E. Anderson ,  James Michael Gardner ,  Scott A. Linn ,  Michael W. Cumbie ,  Berkeley Fisher

IPC: B41J29/393 ,  B41J2/175

Abstract: An example printing cartridge includes a fluid container, a plurality of capacitor plates to detect fluid in the fluid container, each of the capacitor plates associated with a respective fluid level, and a shift register to capture fluid level information from the plurality of capacitor plates.

公开(公告)号：US10740275B1

公开(公告)日：2020-08-11

申请号：US16460016

申请日：2019-07-02

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

Inventor： Stephen D. Panshin ,  Scott A. Linn

IPC: G06F13/42 ,  G03G21/18 ,  B41J2/175

Abstract: Logic circuitry packages for association with replaceable print apparatus components are disclosed herein. An example logic circuitry package includes logic and a serial data bus interface. The serial data bus interface is to interface with a serial data bus of a print apparatus, and the logic is, in response to a first command sent to the logic circuitry package via the serial data bus connected to the serial data bus interface, to generate a low voltage condition on the serial data bus and to monitor a duration of a time period.