Flicker control
AssigneeHewlett-Packard Development Company, L.P.
InventorsDuane A Koehler, Robert Yraceburu
Life of this patent
Estimating the term…
Abstract
An example system includes a varying resistive device, a controllable resistive device, a power supply to power the varying resistive device and the controllable resistive device, and a controller to control operation of the varying resistive device and the controllable resistive device. The varying resistive device changes a power level used during operation. The controller includes a flicker control portion, wherein the flicker control portion is to control a power level at the controllable resistive device based on changes in the power level used by the varying resistive device to maintain a flicker level below a predetermined flicker threshold.
Claims20
A system, comprising:
- a varying resistive device comprising a component of an auxiliary module, wherein the varying resistive device changes a power level used during operation;
- a controllable resistive device comprising a component of an imaging device separate from the auxiliary module;
- a power supply to power the varying resistive device and the controllable resistive device;
- and
- a controller of the imaging device to control operation of the varying resistive device and the controllable resistive device, the controller including a flicker control portion, wherein the flicker control portion is to control a power level at the controllable resistive device based on changes in the power level used by the varying resistive device to maintain a flicker level below a predetermined flicker threshold.
A method, comprising:
- determining whether a short thermal time constant device of an auxiliary module is to receive power in a current power cycle, wherein the short thermal time constant device is coupled to a common power supply with a long thermal time constant device of an imaging device separate from but connected to the auxiliary module;
- each time the short thermal time constant device is determined to receive power in the current power cycle, providing power to the short thermal time constant device and no power to the long thermal time constant device;
- and
- each time the short thermal time constant device is determined to not receive power in the current power cycle, providing power to the long thermal time constant device and no power to the short thermal time constant device.
A non-transitory computer-readable storage medium encoded with instructions executable by a processor of a computing system, the computer-readable storage medium comprising instructions to:
- adjust a power level for a varying resistive device based on an operating threshold of the varying resistive device, wherein the varying resistive device is a component of a conditioning system;
- determine a power level change for a controllable resistive device based on adjustment of the power level for the varying resistive device and a flicker threshold, wherein the controllable resistive device is a component of an imaging device separate from the conditioning system;
- and
- change duty cycle of the controllable resistive device to correspond to the power level change for the controllable resistive device.
Dependencies are inferred from the claim text.