摘要:
A method of hindering optical detection of a pattern of data being stored, moved or processed by at least one active circuit in an integrated circuit, the active circuit including at least first and second active devices that change state within a period of time, such that each device exhibits low resistance in one state and high resistance in another state, the method comprising controlling timing of the change of state of the first active device relative to the second active device so as to prevent the devices having simultaneous intermediate resistances between the low and high resistances, thereby to reduce optical emission by the at least one active circuit compared to causing the changes of state of the two devices to happen simultaneously.
摘要:
A method of hindering optical detection of a pattern of data being stored, moved or processed by at least one active circuit in an integrated circuit, the active circuit including at least first and second active devices that change state within a period of time, such that each device exhibits low resistance in one state and high resistance in another state, the method comprising controlling timing of the change of state of the first active device relative to the second active device so as to prevent the devices having simultaneous intermediate resistances between the low and high resistances, thereby to reduce optical emission by the at least one active circuit compared to causing the changes of state of the two devices to happen simultaneously.
摘要:
An integrated circuit comprising: at least one active device; and at least one decoy device that emits light during a change in its state, wherein the operation of the at least one active device and the at least one decoy device is controlled so as to hinder optical detection of a pattern of the light emitted by the at least one active device.
摘要:
A printhead is provided having at least one row that comprises a plurality of sets of n adjacent printing nozzles. Each nozzle is configured to expel ink in response to a fire signal, such that, for each set of nozzles, a fire signal is provided in accordance with the sequence: [nozzle position 1, nozzle position n, nozzle position 2, nozzle position (n−1), . . . , nozzle position x].
摘要:
A tag printed on a print medium that comprises a substantially circular locator component used to represent a location of a tag reading device with respect to the tag. The tag also includes an orientation component, positioned within the circumference of the locator component, and used to represent an orientation of the tag reading device with respect to the tag. The tag also includes a data component comprising a plurality of data segments that are positioned both within and outside of the circumference of the locator component, the data component used to represent data to be read by the tag reading device.
摘要:
A processor is provided for a printer. The processor includes an address, data and control bus. An expander unit is coupled to the bus and is configured to decompress a bi-level black layer of a page to be printed. A decoder unit is coupled to the bus and is configured to decompress a contone layer of the page to be printed. A halftoner/compositor unit is coupled to the bus. The halftoner/compositor unit is configured to halftone the decompressed contone layer to form a bi-level cyan, yellow, magenta, and black (CYMK) layer and then composite the decompressed bi-level black layer over the bi-level CYMK layer to form a bi-level CYMK image of the page to be printed.
摘要:
A method for handling information in an information management system is provided. The system includes a digital pen capable of reading a position code and communicating at least part thereof in a communication network. Each digital pen is associated with a respective pen identifier. The method includes associating an alias with a pen identifier in dependence on an interactive element which is coded by part of the position code printed on a surface. The alias is indicative of a role or behavior of a pen user when the user communicates via a digital pen with the information management system.
摘要:
A method of storing a bit-pattern in each of a plurality of printer cartridges, each having a memory, of a printing system is provided, in which a first memory location is determined which is different than a first memory location in at least a plurality of the other printer cartridges, and the bit-pattern is stored at the determined first memory location. The different first memory locations are determined such that the bit-pattern storage location of all the respective printer cartridges cannot be ascertained from the bit-pattern storage location of any one of the printer cartridges.
摘要:
A printhead is provided having elongate printhead modules arranged to aggregately extend across a pagewidth and controllers for processing print data into dot data and for controlling the printhead modules in accordance with the dot data. Each printhead module has plural rows of ink ejection nozzles. The nozzle rows of at least one of the printhead modules are longer than the nozzle rows of the other printhead modules. The controllers control ink ejection of the nozzles of the printhead modules in accordance with the dot data. At least one of the controllers is arranged to control all of the printhead modules and at least one other of the controllers is arranged to control only one of the printhead modules.
摘要:
A printer includes a processor. A replaceable ink cartridge includes a first integrated circuit (IC) containing print quality information and which is configured to be interfaced, in a releasable manner, to the processor. A replaceable printhead module includes a printhead which is configured to be interfaced, in a releasable manner, to the processor. The printhead is configured to print ink supplied from the ink cartridge using the print quality information.