High-resolution still picture decoding device
AssigneeSunplus Technology Co., Ltd.
InventorWen-Kuan Chen
Life of this patent
Estimating the term…
Abstract
A high-resolution still picture decoding device is disclosed, which has a memory device, an image decoder, and a decoding controller. The memory device has a bit-stream buffer, a frame buffer and a temporary buffer. The image decoder and decoding controller decode the bit-stream data in the bit-stream buffer and store the decoded data in the frame buffer or temporary buffer. When a still picture is to be displayed, the frame buffer stores part of the frame data corresponding to the still picture and the temporary buffer is provided to store the other frame data which is decoded in real time as the still picture is displayed. The data in the frame buffer and temporary buffer is output for displaying a high-resolution still picture.
Claims10
A high-resolution still picture decoding device, comprising:
- a memory device having a bit-stream buffer, a temporary buffer and a frame buffer, the bit-stream buffer being adapted to store bit-stream data from a storage media;
- and
- a decoding means for decoding the bit-stream data in the bit-stream buffer and storing decoded frame data in the frame buffer or the temporary buffer, such that, when a still picture is to be displayed, the frame buffer stores a part of the frame data that has been decoded from a part of the bit-stream data and corresponds to the still picture, and the temporary buffer is provided to store the other frame data from the other part of the bit-stream data which has not been decoded and which is to be decoded in real time as the still picture is being displayed, and the decoded frame data in the frame buffer and the real-time decoded frame data from the temporary buffer are output for displaying a high-resolution still picture,
- wherein the frame data from the bit-stream buffer is represented by multiple macroblock lines after being decoded by the decoding means, the frame buffer only stores a portion of the macroblock line that has been decoded and corresponds to the frame data of the still picture, and the temporary buffer has a memory space for storing at least one macroblock line for decoding in real time as the still picture is being displayed, wherein the frame buffer stores only a half of the frame data that has been decoded and corresponds to the picture and the temporary buffer has a memory space less than that of the frame buffer.
A high-resolution still picture decoding device, comprising:
- a memory device having a bit-stream buffer, a temporary buffer and a frame buffer, the bit-stream buffer being adapted to store bit-stream data from a storage media;
- and
- a decoding means for decoding the bit-stream data in the bit-stream buffer and storing decoded frame data in the frame buffer or the temporary buffer, such that, when a still picture is to be displayed, the frame buffer stores a part of the frame data that has been decoded from a part of the bit-stream data and corresponds to the still picture, and the temporary buffer is provided to store the other frame data from the other part of the bit-stream data which has not been decoded and which is to be decoded in real time as the still picture is being displayed, and the decoded frame data in the frame buffer and the real-time decoded frame data from the temporary buffer are output for displaying a high-resolution still picture,
- wherein the frame data from the bit-stream buffer is represented by multiple macroblock lines after being decoded by the decoding means, the frame buffer only stores a portion of the macroblock line that has been decoded and corresponds to the frame data of the still picture, and the temporary buffer has a memory space for storing at least one macroblock line for decoding in real time as the still picture is being displayed,
- wherein the frame buffer stores even numbered macroblock lines that have been decoded and correspond to the frame data of the picture, and
- wherein the macroblock lines decoded in the temporary buffer have a height half of the height of the macroblock lines in the frame buffer that have been decoded.
Dependencies are inferred from the claim text.