Video Encoder HRD SEI Parsing for Lower Decoding Complexity

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Solution Overview

Problem

Existing video coding technologies face challenges in efficiently processing increasing amounts of digital video data, requiring improvements in coding efficiency, image quality, and reducing processing complexity.

Innovation Solution

The encoder and decoder systems independently encode and decode hypothetical reference decoder (HRD) parameters into buffering period and picture timing supplemental enhancement information (SEI) messages, allowing for parsing these parameters independently from the sequence parameter set, enhancing coding efficiency and reducing circuit scale.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If HRD parameters are encoded into SEI messages independently from sequence parameter set, then coding efficiency is improved and processing speed is enhanced, but device complexity increases due to independent parsing requirements

Engineering Contradiction:

Improvecoding efficiencyVSAvoidparsing complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the HRD parameter encoding by separating it from the sequence parameter set and placing it into independent SEI messages. This allows the HRD parameters to be parsed and processed independently, improving coding efficiency without requiring complex integrated parsing of all parameters together.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The HRD parameters are encoded into SEI messages in advance and transmitted separately, allowing the decoder to prepare and parse these parameters before processing the main video data. This preliminary action reduces processing delays and improves overall coding efficiency.

Inventive Principle:

Principle #10Preliminary action

2Speed

If HRD parameters are encoded into SEI messages independently from sequence parameter set, then processing speed of encoding/decoding is improved, but circuit scale increases

Engineering Contradiction:

Improveprocessing speedVSAvoidcircuit scale

Core Design Contradiction:

SpeedVSDevice complexity

Solution Approach 1:

By segmenting the parameter encoding into separate SEI messages, the processing pipeline can handle HRD parameters in parallel with video data processing, improving processing speed without requiring a proportionally larger circuit scale.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The SEI message acts as an intermediary carrier for HRD parameters, allowing them to be transmitted and parsed through a dedicated pathway that simplifies the overall circuit architecture while maintaining high processing speed.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260052266A1Encoder, decoder, encoding method, decoding method, and medium

Publication Date: 2026.02.19 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry encodes a hypothetical reference decoder (HRD) parameter into a buffering period supplemental enhancement information (SEI) message independently from a sequence parameter set. The HRD parameter is related to a decoding unit and an HRD.