Bit stream decoding method and bit stream decoding circuit
A technology of a decoding circuit and a decoding method, which is applied in the field of bit stream decoding methods and related bit stream decoding circuits, and can solve the problems of fewer decodable pictures, limited decoding ability, and influence on decoding ability of decoders, etc.
Active Publication Date: 2020-08-28
MEDIATEK INC
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Video decoding can be performed by a hardware or software decoder, and the decoding capability of a decoder is limited by its specifications. If the frame rate of the video exceeds the specification of the decoder, the video cannot be played smoothly
For example, a decoder with a specification of 60fps (frame per second) means that the decoder can only decode up to 60 frames per second, and a video with a frame update rate of 120fps is beyond the specification for a decoder with a specification of 60fps. Video (over-spec); if you use a decoder with a specification of 60fps to decode a video with a refresh rate of 120fps, the video cannot be played smoothly
Furthermore, even if a video is played without exceeding the specifications of the decoder, if other software (such as foreground applications) or firmware requires the decoder to release or disable some system resources during playback, the decoder's The decoding ability will also be affected, and the number of decodable pictures per unit time will be reduced
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The present invention can properly select which pictures can be discarded from the video beyond the standard without decoding, so that the video beyond the standard can still be played smoothly and realize the adaptability of the time domain. Please refer to figure 1 , figure 1 A video v0 is shown, which can be formed by a series of frames arranged in sequence, such as frames p1, p2, pg1 and pg2, and so on. When the video v0 is to be played, the frames are also displayed in the same order; in other words, each frame in the video v0 corresponds to a playing sequence. The frames in the video v0 may form one or more groups, such as groups g1 and g2; each group may include one or more frames that are played sequentially. For example, group g1 contains multiple pictures with continuous playback order, among which picture pg1 is the picture with the earliest playback order in group g1, and group g2 contains multiple pictures with continuous playback order, among which pictu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a bit stream decoding method and a bit stream decoding circuit. The bit stream contains multiple pictures. The method comprises the following steps: acquiring a play order of the current picture by analyzing a header of the current picture in the bit stream, wherein the current picture belongs to a group; and judging whether to decode the current picture or abandon the current picture but not decode according to the play order of the current picture.
Description
technical field [0001] The present invention relates to a bit stream decoding method and related bit stream decoding circuit, and in particular to a temporally scalable (temporal scalable) video bit stream decoding method and related bit stream decoding circuit, which can reduce the decoding burden , and play the video smoothly. Background technique [0002] Video can express rich and vivid visual information, and the video playback function has become the focus of the development of modern electronic products. A video is formed by a series of frames arranged in sequence; for the convenience of video storage and transmission, the frames in the video will be encoded into a bit stream. To realize the video playback function, each picture must be decoded from the bit stream before it can be played. [0003] Video decoding can be performed by a hardware or software decoder, and the decoding capability of a decoder is limited by its specification. If the frame rate of the video...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/70H04N19/31H04N19/44
Inventor 林和源杨雅婷童怡新
Owner MEDIATEK INC