Display controller with content-adaptive modulation control signaling
AssigneeTexas Instruments Incorporated
InventorAravind Lakshminarayanan
Life of this patent
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Abstract
A system includes: a spatial light modulator including pixel elements; and a controller coupled to the spatial light modulator. The spatial light modulator sets the pixel elements based on a modulation control signal. The controller is configured to: obtain an image; analyze the image to determine image attributes including a dynamic range metric; provide a control sequence responsive to the determined image attributes; and provide the modulation control signal to the spatial light modulator based on the control sequence. The modulation control signal reduces a number of bits used by the pixel elements relative to a default number of bits if the dynamic range metric is below a dynamic range threshold.
Claims20
A system comprising:
- a spatial light modulator including pixel elements, wherein the spatial light modulator is configured to control the pixel elements based on a modulation control signal;
- and
- a controller coupled to the spatial light modulator, wherein the controller is configured to:
- obtain an image;
- analyze the image to determine image attributes including a dynamic range metric that indicates a difference between a lightest area and a darkest area of the image, and at least one of a spatio-temporal gradient metric and a content distribution metric;
- provide a control sequence responsive to the determined image attributes;
- and
- produce the modulation control signal for the spatial light modulator based on the control sequence, the modulation control signal reducing a number of bits used by the pixel elements relative to a default number of bits if the dynamic range metric is below a dynamic range threshold.
A method comprising:
- obtaining, by a controller, an image;
- analyzing, by the controller, the image to determine image attributes including a spatial distribution of content metric that indicates relative distribution of content of the image from a peripheral region of the image to a center region of the image, and at least one of a spatio-temporal gradient metric and a dynamic range metric that indicates a difference between a lightest area and a darkest area of the image;
- and
- providing, by the controller, a modulation control signal responsive to the determined image attributes, the modulation control signal excluding reset blocks for pixels elements of a spatial light modulator in response to the spatial distribution of content metric being below a spatial distribution of content threshold.
A controller that includes hardware accelerators, the hardware accelerators configured to:
- obtain an image;
- analyze the image to determine image attributes including a gradient metric and a spatial distribution of content metric that indicates relative distribution of content of the image from a peripheral region of the image to a center region of the image, including analyze the gradient metric based on a gradient threshold and analyze the spatial distribution of content metric based on a spatial distribution of content threshold;
- provide a control sequence responsive to the analysis of the determined image attributes;
- and
- provide a modulation control signal based on the control sequence.
Dependencies are inferred from the claim text.