Content Transmission Apparatus Adaptive Bandwidth Segmentation

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Solution Overview

Problem

Existing content transmission systems face delays in narrow network bandwidth environments and quality deterioration in broader bandwidth environments due to the inability to adaptively transmit high-quality content.

Innovation Solution

A content transmission apparatus that compresses data into fundamental and extended components, determining based on communication conditions whether to transmit both or only the fundamental component, and retransmits only the fundamental component upon request to prevent delays and maintain high quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the content transmission apparatus transmits high bit-rate content, then the content quality is improved, but transmission delays occur in narrow network bandwidth environments

Engineering Contradiction:
Improvecontent qualityVSAvoidtransmission delay
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent segments content data into multiple packets with different priority levels (first packets containing essential content, second packets containing additional content). This segmentation allows the system to transmit critical content first to ensure quality playback, while optional enhancement data can follow if network conditions permit, thereby resolving the contradiction between high quality transmission and delay prevention.

Inventive Principle:
Principle #1Segmentation

2Loss of time

If the content transmission apparatus transmits low bit-rate content, then transmission delays are prevented, but content quality deteriorates

Engineering Contradiction:
Improvetransmission delayVSAvoidcontent quality
Core Design Contradiction:
Loss of timeVSManufacturing precision

Solution Approach 1:

The patent implements dynamic transmission strategies where the apparatus adapts packet transmission based on real-time network conditions and client buffer status. When network bandwidth is sufficient, higher bit-rate content is transmitted; when bandwidth is constrained, the system dynamically switches to transmitting only essential first packets, thus preventing delays while maintaining acceptable quality through adaptive behavior.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If the content transmission apparatus transmits both first and second packets, then content quality is improved, but the client apparatus cannot reproduce content under narrow network bandwidth

Engineering Contradiction:
Improvecontent qualityVSAvoidcontent reproduction reliability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent employs preliminary action by ensuring that first packets containing essential content information are transmitted and received before second packets. The client apparatus is pre-configured to reproduce content using only first packets if needed, while second packets serve as optional enhancements. This preliminary structuring guarantees reproduction reliability under narrow bandwidth while enabling quality improvement when conditions allow.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10531160B2Content transmission apparatus, content delivery system, and content transmission method
Publication Date: 2020.01.07 YAMAHA CORP
  • US10531160B2 patent drawing
  • US10531160B2 patent drawing
  • US10531160B2 patent drawing

AI summary

A content delivery system includes a content transmission apparatus that includes at least one processor configured to implement stored instructions and execute a plurality of tasks. The plurality of tasks include a compression task, a transmission task, and a reception task. The compression task performs compression of content dividing thereof into a fundamental component and an extended component. The transmission task transmits content to a client apparatus. The reception task receives a retransmission request for the content. The transmission task determines, depending on a communication condition, whether to transmit the fundamental component of the content or both the fundamental component and the extended component of the content together. The transmission task, upon the reception task receiving the retransmission request, retransmits only the fundamental component of the content that corresponds to the retransmission request.