Layered Video Transmission for UHD High-Frame-Rate Compatibility
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Solution Overview
Problem
Current technologies face challenges in transmitting image data with ultra-high definition at a high frame rate while ensuring backward compatibility on the reception side, particularly in environments where fixed and mobile receivers share the same transmission band.
Innovation Solution
A transmission apparatus that processes image data to create multiple enhancement formats, allowing for the transmission of basic and enhancement video streams, which can be decoded to achieve high definition, ultra-high definition, and high frame rates, using mixing and down-scale processing to adapt to different receiver capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image data with ultra-high definition at high frame rate is transmitted, then image quality and sharpness are improved, but transmission bit rate and system complexity increase
Solution Approach 1:
The video stream is segmented into multiple enhancement layers (first enhancement layer, second enhancement layer, third enhancement layer) with increasing definition and frame rates. Receivers can selectively decode only the necessary layers based on their capabilities, avoiding the need to process the complete ultra-high definition high frame rate stream and thus reducing system complexity while maintaining image quality for capable devices.
Solution Approach 2:
The patent adds temporal dimension (frame rate) to the traditional spatial dimension (definition) of video quality enhancement. By creating enhancement layers that progress from high definition at basic frame rate to ultra-high definition at high frame rate, the system provides quality improvement in multiple dimensions, allowing receivers to benefit from enhanced quality in the dimension they are most capable of handling.
2Speed
If high frame rate video service is provided, then motion smoothness and sharpness are improved, but compatibility with normal frame rate receivers deteriorates
Solution Approach 1:
The video service is segmented into a basic layer (high definition at basic frame rate) and multiple enhancement layers. The first enhancement layer provides high definition at high frame rate, while subsequent layers provide ultra-high definition at high frame rate. Normal frame rate receivers can decode the basic layer without issues, while high frame rate capable receivers can utilize the enhancement layers, thus maintaining compatibility across different receiver types.
Solution Approach 2:
The basic video stream serves multiple functions: it acts as a standalone service for normal frame rate receivers and as a foundation layer for enhanced services on high frame rate capable receivers. This multi-functionality ensures universal compatibility while enabling advanced features for capable devices.
3Manufacturing precision
If high speed frame shutter is used, then motion blur is reduced and image sharpness is improved, but strobing effect occurs on normal frame rate receivers
Solution Approach 1:
The high frame rate video stream is segmented into multiple layers with different temporal characteristics. The basic layer maintains compatibility with normal frame rate receivers by providing content at appropriate temporal intervals, while enhancement layers provide the high frame rate content for capable receivers. This segmentation prevents the strobing effect on normal receivers while preserving image sharpness for high frame rate capable receivers.
Solution Approach 2:
The enhancement layers act as intermediaries that carry the high frame rate information. Normal frame rate receivers ignore these enhancement layers and process only the basic layer, while high frame rate receivers use the enhancement layers to achieve sharp images without experiencing strobing effects. The layered structure mediates between the conflicting requirements of sharpness and compatibility.
Data Source
AI summary
Image data having ultra-high definition at a high frame rate is processed to obtain image data, having a basic format, from which an image having high definition at a basic frame rate is to be obtained, image rate, having a first enhancement format, from which an image having high definition at a high frame rate is to be obtained, image data, having a second enhancement format, from which an image having ultra-high definition at a basic frame rate is to be obtained, and image data, having a third enhancement format, from which an image having ultra-high definition at a high frame rate is to be obtained. A basic video stream containing an encoded image data of the image data having the basic format, and a predetermined number of enhancement video streams containing the encoded image data of the image data having the first, second, and third enhancement formats are produced.