Picture Encoding Buffer Management for Display Timing
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Solution Overview
Problem
Existing picture encoding methods struggle to display decoded pictures that are not immediately referenced or outputted, leading to memory inefficiencies and incomplete picture display due to limited memory storage capabilities.
Innovation Solution
A picture encoding method that predictsively encodes input pictures using reference pictures stored in a buffer, judging whether decoded pictures are for reference or output, and managing the buffer to store both types, ensuring pictures can be displayed at their designated time without unnecessary memory usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the picture buffer stores only reference pictures, then memory usage is minimized, but decoded pictures that are not immediately referenced cannot be displayed
Solution Approach 1:
The patent applies dynamics by making the picture buffer flexible and adaptable. The buffer dynamically adjusts its storage behavior based on the picture type: it stores reference pictures for future encoding reference, stores non-displayable decoded pictures for later output, and releases pictures that are no longer needed. This dynamic management allows the same buffer to serve multiple purposes at different times, resolving the contradiction between minimizing memory usage and ensuring complete picture display.
2Reliability
If the picture buffer stores all decoded pictures, then all pictures can be displayed at their designated time, but memory usage increases excessively
Solution Approach 1:
The patent implements discarding and recovering by selectively releasing pictures from the buffer when they are no longer needed. The release determination unit judges whether stored pictures can be released based on encoding requirements and output timing. Pictures that have been displayed or are no longer needed for reference are released back to the buffer, making memory available for new pictures. This selective discarding and recovering ensures complete picture display while preventing excessive memory accumulation.
3Quantity of substance
If the buffer releases pictures early to free memory, then memory efficiency improves, but pictures may not be available when needed for display or reference
Solution Approach 1:
The patent uses feedback mechanisms where the release determination unit continuously monitors buffer status, encoding requirements, and output timing to make informed release decisions. The system receives feedback about which pictures are needed for future encoding reference and which pictures need to be displayed at specific times. Based on this feedback, the buffer dynamically adjusts what to release and when, ensuring memory efficiency without compromising picture availability timing.
Data Source
AI summary
A picture encoding method of the present invention is a picture encoding method of predictively encoding an input picture with reference to pictures stored in a picture buffer, decoding the encoded input picture, judging whether or not the decoded picture is a picture for reference and whether or not the decoded picture is a picture for output which needs to be stored until its display time, and storing, in the picture buffer, the picture for reference and the picture for output based on the determination result.