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1. WO2020117197 - LOGIC CIRCUITRY

Publication Number WO/2020/117197
Publication Date 11.06.2020
International Application No. PCT/US2018/063638
International Filing Date 03.12.2018
IPC
G06F 21/44 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
30Authentication, i.e. establishing the identity or authorisation of security principals
44Program or device authentication
G06F 21/60 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
G06F 13/42 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
13Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
38Information transfer, e.g. on bus
42Bus transfer protocol, e.g. handshake; Synchronisation
B41J 2/175 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
17characterised by ink handling
175Ink supply systems
CPC
B41J 2/17546
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
17characterised by ink handling
175Ink supply systems ; ; Circuit parts therefor
17503Ink cartridges
17543Cartridge presence detection or type identification
17546electronically
G06F 13/4282
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
13Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
38Information transfer, e.g. on bus
42Bus transfer protocol, e.g. handshake; Synchronisation
4282on a serial bus, e.g. I2C bus, SPI bus
G06F 21/44
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
30Authentication, i.e. establishing the identity or authorisation of security principals
44Program or device authentication
G06F 21/608
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
60Protecting data
606by securing the transmission between two devices or processes
608Secure printing
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • GARDNER, James Michael
  • LINN, Scott A.
  • PANSHIN, Stephen D.
  • WARD, Jefferson P.
  • ROETHIG, David Owen
Agents
  • PERRY, Garry A.
  • JASPER, Joseph T.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LOGIC CIRCUITRY
(FR) CIRCUITS LOGIQUES
Abstract
(EN)
In an example, a method comprises, by logic circuitry associated with a replaceable print apparatus component, responding to a first validation request sent via an I2C bus to a first address associated with the logic circuitry with a first validation response; and responding to a second validation request sent via the I2C bus to a second address associated with the logic circuitry with a second validation response.
(FR)
La présente invention concerne, selon un exemple, un procédé consistant, au moyen de circuits logiques associés à un composant d'appareil d'impression remplaçable, à répondre à une première requête de validation envoyée par l'intermédiaire d'un bus I2C à une première adresse associée aux circuits logiques à l'aide d'une première réponse de validation ; et à répondre à une seconde requête de validation envoyée par l'intermédiaire du bus I2C à une seconde adresse associée aux circuits logiques à l'aide d'une seconde réponse de validation.
Also published as
EP2018830066
Latest bibliographic data on file with the International Bureau