Image signal processor, method of operating the image signal processor and image processing system including the image signal processor
AssigneeSamsung Electronics Co., Ltd.
InventorJeong-Moon Byun
Life of this patent
Estimating the term…
Abstract
An image signal processor includes a first encoder receiving first image data for pixel data in a graphic image and performing compression on the first image data to generate first compressed data, an alpha map scaler extracting an alpha value α of the graphic image from the first image data and generating an alpha map for the alpha value α and a second encoder receiving the alpha map and second image data for pixel data in a video image, performing computation on the second image data using the alpha map to generate multiply data and performing compression on the multiply data to generate second compressed data.
Claims20
An image signal processor comprising:
- a first encoder configured to receive first image data for pixel data in a graphic image and perform compression on the first image data to generate first compressed data;
- an alpha map scaler configured to extract an alpha value α of the graphic image from the first image data and generate an alpha map for the alpha value α;
- and
- a second encoder connected to a memory and configured to:
- receive the alpha map and second image data for pixel data in a video image,
- perform computation on the second image data using the alpha map to generate multiply data,
- perform compression on the multiply data to generate second compressed data, and
- store the second compressed data in the memory.
An image processing system comprising:
- an image signal processor configured to process first image data for pixel data in a graphic image and second image data for pixel data in a video image to generate an output image;
- a memory configured to receive first compressed data for the first image data, second compressed data for the second image data, and the output image;
- and
- a display configured to display the output image,
- wherein the image signal processor includes:
- a first encoder configured to receive the first image data and perform compression on the first image data to generate the first compressed data;
- an alpha map scaler configured to extract an alpha value α of the graphic image from the first image data and generate an alpha map for the alpha value α;
- and
- a second encoder connected to the memory and configured to:
- receive the alpha map and the second image data;
- perform computation on the second image data using the alpha map to generate multiply data;
- perform compression on the multiply data to generate second compressed data;
- and
- store the second compressed data in the memory.
A method of operating an image signal processor, the method comprising:
- receiving first image data for pixel data in a graphic image;
- extracting an alpha value α of the graphic image from the first image data and generating an alpha map for the alpha value α;
- receiving the alpha map and second image data for pixel data in a video image;
- performing computation on the second image data using the alpha map to generate multiply data;
- performing compression on the multiply data to generate second compressed data and performing compression on the first image data to generate first compressed data;
- and
- performing alpha-bending by mixing the first compressed data and the second compressed data;
- and
- storing the second compressed data in a memory.
Dependencies are inferred from the claim text.