Dynamic gamut display systems, methods, and applications thereof
First Claim
1. A dynamic gamut display system method for solid state light based displays using emissive micro-pixel array devices wherein each color of each pixel is independently controllable without a backlight, each solid state light based display having a display native gamut, comprising:
- buffering in a buffer, an input video frame pixel data expressed relative to a defined three primary reference color gamut having a defined reference white point;
processing the input video frame pixel data as the input video frame pixel data is entered into the buffer to calculate a set of gamut metrics for the respective video frame representing, for each primary reference color in the input video frame pixel data, a respective mean and spread from the mean in the input video frame pixel data around the white point of the reference color gamut;
calculating a set of gamut scale factors that represent the distribution of each primary reference color in the input video frame pixel data around the white point of the reference color gamut;
using the gamut scale factors, determining an adapted color gamut around the white point of the reference color gamut;
using a matrix for converting pixel color values from the reference gamut to the adapted color gamut and the gamut scale factors, converting the buffered input video frame pixels data from the reference color gamut to the adapted color gamut; and
outputting the adapted gamut, and outputting the buffered input video frame pixel data as converted from the reference color gamut to the adapted color gamut, to a display of the dynamic gamut display system, both outputs being expressed in the display native gamut.
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Abstract
In the dynamic gamut display systems, video input data is processed to extract metrics indicative of the gamut occupancy of the frame pixels. The extracted metrics are used to form a set of scale factors to be used by the display to synthesize an adapted gamut that matches the frame pixel color gamut from the native color primaries of the display. The generated gamut adaptation scale factors are used to convert the frame pixels'"'"' values to the adapted gamut which are provided to the display for modulation using the synthesized adapted gamut for each video frame or a sub-region of a video frame. The methods enable increased display brightness, reduced power consumption and reduced interface and processing bandwidth. Also disclosed is an adapted video frame data formatting method that maps the benefits of the adapted gamut into a reduced frame data size enabling bandwidth savings when used for video distribution.
60 Citations
31 Claims
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1. A dynamic gamut display system method for solid state light based displays using emissive micro-pixel array devices wherein each color of each pixel is independently controllable without a backlight, each solid state light based display having a display native gamut, comprising:
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buffering in a buffer, an input video frame pixel data expressed relative to a defined three primary reference color gamut having a defined reference white point; processing the input video frame pixel data as the input video frame pixel data is entered into the buffer to calculate a set of gamut metrics for the respective video frame representing, for each primary reference color in the input video frame pixel data, a respective mean and spread from the mean in the input video frame pixel data around the white point of the reference color gamut; calculating a set of gamut scale factors that represent the distribution of each primary reference color in the input video frame pixel data around the white point of the reference color gamut; using the gamut scale factors, determining an adapted color gamut around the white point of the reference color gamut; using a matrix for converting pixel color values from the reference gamut to the adapted color gamut and the gamut scale factors, converting the buffered input video frame pixels data from the reference color gamut to the adapted color gamut; and outputting the adapted gamut, and outputting the buffered input video frame pixel data as converted from the reference color gamut to the adapted color gamut, to a display of the dynamic gamut display system, both outputs being expressed in the display native gamut. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29)
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11. The method of clam 10 wherein the display element synthesizes the color primaries of the adapted color gamut and modulates the adapted frame pixel data using the synthesized color primaries of the adapted color gamut.
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23. The method of clam 22 wherein a change in the first data field of the header data sub-frame is indicated by a change flag incorporated in the first data field of the header data sub-frame.
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30. A dynamic gamut display system method for solid state light based displays using emissive micro-pixel array devices wherein each color of each pixel is independently controllable without a backlight, each solid state light based display having a display native gamut, comprising;
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buffering in a buffer, an input video frame pixel data expressed relative to a defined three primary reference color gamut having a defined reference white point; processing the input video frame pixel data as the input video frame pixel data is entered into the buffer to calculate a set of gamut metrics for the respective input video frame pixel data or each sub-region of the respective input video frame pixel data representing, for each primary reference color in the input video frame pixel data or a sub-region pixel data, a respective mean and spread from the mean in the respective input video frame pixel data or sub-region pixel data around the reference white point of the three primary reference color gamut; calculating a set of gamut scale factors that represent distribution of each primary reference color in the input video frame pixel data or sub-region pixel data around the reference white point of the three primary reference color gamut; using the gamut scale factors, determining an adapted color gamut around the reference white point of the three primary reference color gamut for the respective input video frame pixel data or sub-region pixel data; using a matrix for converting pixel color values from the three primary reference color gamut to the adapted color gamut and the gamut scale factors, converting the buffered input video frame pixel data or sub-region pixel data from the three primary reference color gamut to the adapted color gamut; and outputting the adapted color gamut, and outputting the buffered input video frame pixel data or sub-region pixel data as converted from the three primary reference color gamut to the adapted color gamut, to a display of the dynamic gamut display system, both outputs being expressed in the display native gamut.
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31. A dynamic gamut display system method for solid state light based displays using emissive micro-pixel array devices wherein each color of each pixel is independently controllable without a backlight, each solid state light based display having a display native gamut, comprising:
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buffering in a buffer, an input video frame pixel data expressed relative to a defined three primary reference color gamut having a defined reference white point; processing the input video frame pixel data as the input video frame pixel data is entered into the buffer to calculate a set of gamut metrics for each respective input video frame sub-region pixel data of the respective input video frame pixel data representing, for each primary reference color in the input video frame sub-region pixel data, a respective mean and spread from the mean in the input video frame sub-region pixel data around the reference white point of the three primary reference color gamut; calculating a set of gamut scale factors that represent distribution of each primary reference color in the input video frame sub-region pixel data around the reference white point of the three primary reference color gamut; using the gamut scale factors for each input video frame sub-region pixel data, determining an adapted color gamut around the reference white point of the three primary reference color gamut; using a matrix for converting pixel color values from the three primary reference color gamut to the adapted color gamut and the gamut scale factors, converting the buffered input video frame pixel data or input video frame sub-region pixel data from the three primary reference color gamut to the adapted color gamut; and outputting the adapted color gamut, and outputting the buffered input video frame sub-region pixel data as converted from the three primary reference color gamut to the adapted color gamut, to a display of the dynamic gamut display system, both outputs being expressed in the display native gamut.
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Specification