Hewlett-packard Development Company, L.p.

Jordi Ferran Cases

David Toussaint

Marcos Casaldaliga

Carles Flotats Villagrasa

David A Champion

Raimon Castells De Monet

Stephan R Clark

Marti Rius Rossell

Carles Flotats

Javier González Bruno

Javier Gonzalez Bruno

Oscar Martinez Bailac

Jonas Ingemar Åström

Sergio De Santiago Domínguez

Jonas Ingemar Astrom

A power control unitcontrols the power consumed by a systemhaving a plurality of electrical power consumption states including an active state and at least one power saving state. The system comprises a plurality of subsystemseach having a plurality of subsystem power states including an active state and at least one power saving state. The electrical power consumption states of the system correspond to respective different configurations of subsystem power states of the subsystems and the power control unit is arranged for signal interface with the subsystems and a power supply unitof the system for controlling the subsystem power states of each of the subsystems and the power supplied to each of the subsystems by the power supply unit dependent on the required power consumption state of the system.

System power control using a power supply to provide voltage to subsystems in which a subsystem determines its operating state based on the voltage received by the subsystem

A densitometer includes a plurality of light-emitting diodes (LEDs) and at least one sensor. The LEDs are activated one at a time in a sequential, repeatable order. Photonic energy from each LED is reflected off an entity and is incident upon the sensor(s). Circuitry samples or acquires signaling from the sensor(s) in accordance with the respective LED activations. Signaling from the densitometer can be used in controlling ink-jetting printers or other apparatus.

Control of light-emitting diodes and sensors

A system for adjusting measurements is disclosed. In one embodiment, the system includes an optical sensor having a window marked with two fiducials and at least one processor coupled to the optical sensor.

Adjusting measurements

A shuttering and sealing device is disclosed. In one embodiment, the device includes an aperture through which light may pass to an optical sensor, a seal surrounding the aperture, and a shutter movable between an open position in which the shutter does not cover the aperture and a closed position in which the shutter covers the aperture and the seal seals the shutter around the aperture.

Shuttering and sealing device

In one embodiment, a distance that a target moves is calculated utilizing an optical sensor. A first temperature of a first portion of the optical sensor is measured at the time of the distance calculation. A second temperature of a second portion of the optical sensor is measured at the time of the distance calculation. The distance is adjusted by a compensation factor that is a function of the first and second temperatures.

Method and apparatus to adjust distance calculations

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Cerdanyola del Valles, Spain

Jordi Ferran Cases