Display controller and image display method
AssigneeSony Interactive Entertainment Inc.
InventorMasato Mitsutake
Life of this patent
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Abstract
A display controller reads, from frame buffers, data on a first image and a second image, and converts, with a conversion formula depending on the characteristics in terms of luminance of the data, the data to data in a blend space having common characteristics. Then, the display controller performs alpha blending on the converted data in the blend space, further converts the data to a space having characteristics suitable for a display, and outputs the resultant to the display.
Claims9
A display controller, comprising:
- a plurality of combining-use conversion circuits configured to convert a plurality of data on a plurality of images read from a memory to a plurality of data having a common characteristic in terms of luminance, by mapping a luminance range of at least one of the images to a part of a luminance range of at least one other of the images;
- a combining circuit configured to perform alpha blending after the conversion on the data on the plurality of images having the common characteristic that has been output from the combining-use conversion circuits;
- and
- an output-use conversion circuit configured to output data on a composite image as a signal for display,
- wherein, prior to converting the plurality of data to the common characteristic in terms of luminance, the combining-use conversion circuits eliminate any nonlinear characteristic in the plurality of data for the plurality of images in terms of luminance, and thereafter, perform the converting the plurality of data on the plurality of images to the common characteristic in terms of luminance.
An image display method that is performed by a display controller, the image display method comprising:
- converting, via a plurality of combining-use conversion circuits, data on a plurality of images read from a memory to data having a common characteristic in terms of luminance, by mapping a luminance range of at least one of the images to a part of a luminance range of at least one other of the images;
- performing, via a combining circuit, alpha blending after the conversion on the data on the plurality of images having the common characteristic that has been output from the combining-use conversion circuits;
- and
- outputting, via an output-use conversion circuit, data on a composite image as a signal for display to a display,
- wherein, prior to converting the plurality of data to the common characteristic in terms of luminance, the converting by the combining-use conversion circuits includes eliminating any nonlinear characteristic in the plurality of data for the plurality of images in terms of luminance, and thereafter, perform the converting the plurality of data on the plurality of images to the common characteristic in terms of luminance.
A non-transitory, computer readable storage medium containing a computer program, which when executed by a computer, causes the computer to perform an image display method by a display controller carrying out actions, comprising:
- converting, via a plurality of combining-use conversion circuits, data on a plurality of images read from a memory to data having a common characteristic in terms of luminance, by mapping a luminance range of at least one of the images to a part of a luminance range of at least one other of the images;
- performing, via a combining circuit, alpha blending after the conversion on the data on the plurality of images having the common characteristic that has been output from the combining-use conversion circuits;
- and
- outputting, via an output-use conversion circuit, data on a composite image as a signal for display to a display,
- wherein, prior to converting the plurality of data to the common characteristic in terms of luminance, the converting by the combining-use conversion circuits includes eliminating any nonlinear characteristic in the plurality of data for the plurality of images in terms of luminance, and thereafter, perform the converting the plurality of data on the plurality of images to the common characteristic in terms of luminance.
Dependencies are inferred from the claim text.