Spatial light modulators
AssigneeDigital Projection Limited
InventorsJohn David Millward, John Gillespie
Life of this patent
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Abstract
A processing system for a spatial light modulator in the form of an array of defomable mirror devices receives a gamma-corrected, video input signal. A de-gamma processor removes all or part of the gamma-correction of the video input signal to match the data to the form of the spatial light modulator.
Claims19
A display system including:
- at least one array of deflectable mirror devices, each mirror device being associated with at least one electrode, each mirror device being deflectable between a first orientation in which light incident on the mirror device is reflected along an “ON” direction towards a display and a second orientation in which light incident on the mirror device is reflected along an “OFF” direction dependent on electrical signals applied to the associated electrode;
- a processing system for receiving a gamma-corrected video input signal and producing display data signals for the array;
- a de-gamma processor for removing all or part of the gamma-correction of said video input signal to match the data to the form of the array of deflectable mirror devices;
- and
- a display memory for receiving processed pixel data and for formatting said pixel data into bit-planes for display by said array.
An address system for an array of deformable mirror devices, the address system being arranged to receive a gamma-corrected video input signal, the address system including a de-gamma processor for removing all or part of the gamma-correction of the video input signal to match the data to the form of the deflectable mirror device.
A display system including an array of deflectable mirror devices and an address system for providing address signals to the array of deflectable mirror devices, the system including a de-gamma processor for removing gamma-correction from the input signal to match the input signal to the deflectable mirror device.
A method of displaying images using an array of deflectable mirror devices, comprising:
- inputting a gamma corrected video signal;
- removing the gamma correction from the input signal;
- and
- using said signal from which said gamma correction has been removed to address the array of deflectable mirror devices.
A display system including:
- at least one spatial light modulator comprising an array of display elements;
- input means for receiving a gamma-corrected video input signal;
- control circuitry responsive to data signals derived from the video input signal for controlling the state of each display element between an “ON” condition in which light is directed towards a display and an “OFF” condition in which light is not directed towards the display;
- and
- a de-gamma processor for removing the gamma-correction of the input video signal to match the data signals to the form of the array of display elements.
Dependencies are inferred from the claim text.