Transmission Device Blur Control for High-Frame-Rate Video

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Solution Overview

Problem

Display devices that do not support high frame rates for moving image data often resort to thinning or addition processing, resulting in unsatisfactory image quality for viewers.

Innovation Solution

The implementation of a blurring process on high-frame-rate moving image data using blur control information, which is inserted into the transmission stream, allows for the selection of appropriate weighting coefficients to achieve desired image quality based on display frame rates or user preferences.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If thinning or addition processing is performed on high-frame-rate moving image data to obtain normal-frame-rate data for display, then the display device can operate at supported frame rates, but the image quality becomes unsatisfactory

Engineering Contradiction:

Improvecompatibility with display devicesVSAvoidimage quality

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent applies parameter changes by introducing blur control information that modifies the temporal weighting coefficients during frame rate conversion. Instead of using fixed thinning or addition processing, the system dynamically adjusts the blur characteristics by changing the weighting parameters of neighboring frames, thereby maintaining image quality while achieving compatible frame rates for display devices

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements dynamics by making the frame rate conversion process adaptive rather than static. The blur control information allows the system to dynamically adjust the degree of blur and temporal weighting based on the specific display capabilities and content characteristics, enabling optimal image quality across different display scenarios

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If frame rate conversion is performed to match display capabilities, then compatibility is achieved, but the natural motion characteristics of high-frame-rate content are degraded

Engineering Contradiction:

Improveframe rate compatibilityVSAvoidmotion accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent uses parameter changes by controlling the temporal weighting coefficients through blur control information. This allows the frame rate conversion to preserve motion accuracy by adjusting the weight given to neighboring frames, preventing the degradation of motion characteristics while still achieving compatible display frame rates

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP3614680B1Transmission device, transmission method, reception device, reception method, recording device, and recording method

Publication Date: 2024.05.01 SONY GROUP CORP

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AI summary

The present technology makes it easy to present an image having appropriate image quality at a receiver side that receives high-frame-rate moving image data. A video stream obtained by encoding moving image data having a high frame rate is generated. A container containing the video stream is transmitted. Blur control information for controlling blur is inserted into a layer of the container and/or a layer of the video stream. The blur control information gives, for example, weighting coefficients for individual frames in a blurring process for adding image data of neighboring frames to image data of a current frame.