Method of scaling subpicture data and related apparatus
AssigneeMediatek Inc.
InventorYu-Ching Hsieh
Life of this patent
Estimating the term…
Abstract
A method for scaling subpicture data comprises receiving a video data stream and a subpicture data stream; pre-parsing the subpicture data stream to obtain line information of subpicture data, the subpicture data containing both top field pixel data and bottom field pixel data; calculating the number of lines contained in the top field pixel data and the bottom field pixel data from the pre-parsed line information; interlacing the top field pixel data and the bottom field pixel data; and scaling the top and bottom field pixel data together in interlaced form for adjusting the number of lines contained in the top field pixel data and the bottom field pixel data.
Claims14
A method of scaling subpicture data, the method comprising:
- receiving a video data stream and a subpicture data stream;
- pre-parsing the subpicture data stream to obtain line information of subpicture data, the subpicture data containing both top field pixel data and bottom field pixel data;
- calculating the number of lines contained in the top field pixel data and the bottom field pixel data from the pre-parsed line information;
- interlacing the top field pixel data and the bottom field pixel data;
- and
- scaling the top and bottom field pixel data together in interlaced form for adjusting the number of lines contained in the top field pixel data and the bottom field pixel data.
A video processing circuit, comprising:
- an input for receiving a video data stream and a subpicture data stream;
- a decoding module for acquiring line information of subpicture data from the subpicture data stream, the subpicture data containing both top field pixel data and bottom field pixel data;
- and
- a subpicture scaling module for calculating the number of lines contained in the top field pixel data and the bottom field pixel data from the line information, interlacing the top field pixel data and the bottom field pixel data, and scaling the top and bottom field pixel data together in interlaced form for adjusting the number of lines contained in the top field pixel data and the bottom field pixel data.
A method for scaling subpicture data, comprising:
- receiving a video data stream and a subpicture data stream;
- decoding the subpicture data stream to obtain line information of subpicture data, the subpicture data containing both top field pixel data and bottom field pixel data;
- calculating the number of lines contained in the decoded top field pixel data and the decoded bottom field pixel data from the line information;
- interlacing the decoded top field pixel data and the decoded bottom field pixel data;
- and
- scaling the decoded top field pixel data and the decoded bottom field pixel data together in interlaced form for adjusting the number of lines contained in the decoded top field pixel data and the decoded bottom field pixel data.
Dependencies are inferred from the claim text.