Time-Sliced Display Multiplexing for Flicker-Free Broadcast
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Solution Overview
Problem
Existing methods for transmitting alternative image content of a physical display to different viewers, such as those used in sports or entertainment events, often result in disturbance to direct viewers due to flickering or unsatisfactory viewer experiences, especially when slow motion video streams are involved, and require high-cost dedicated equipment.
Innovation Solution
A method and system that generate at least two sets of image data, displaying them in a time-sliced multiplexed manner at a high display frame rate, with one video stream synchronized at a slow motion frame rate, an integer multiple of the standard broadcasting frame rate, allowing transmission to different subsets of viewers without disturbing direct viewers, using conventional camera technology and standard frame rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dedicated camera technology is used to capture each image displayed on the signboard at high frame rates, then the quality of broadcast viewer experience is improved, but the equipment cost and device complexity increase significantly
Solution Approach 1:
The patent segments the video signal processing by separating the capture of direct viewer images from broadcast viewer images. The camera captures images at standard frame rates for broadcast viewers, while a separate processing path handles the generation of high-frame-rate content for direct viewers. This segmentation allows standard equipment to be used for broadcast capture while achieving high-quality multi-rate output through processing.
Solution Approach 2:
The patent introduces an intermediary processing system that receives standard frame rate video signals and generates multiple output streams at different frame rates. This intermediary unit acts as a mediator between the standard camera capture and the diverse viewer requirements, creating high frame rate outputs for direct viewers without requiring cameras to operate at those high rates directly.
2Reliability
If high frame rate images are displayed on the physical display for broadcast viewers, then the slow motion video stream quality is improved, but the viewing experience of direct viewers is disturbed due to flickering
Solution Approach 1:
The patent segments the display content into separate time slots for direct viewer images and broadcast viewer images. During periods when the physical display shows content for direct viewers at standard frame rates, the system simultaneously captures and processes content for broadcast viewers. This temporal segmentation ensures that high frame rate content for broadcast does not interfere with the stable display experience of direct viewers.
Solution Approach 2:
The patent implements periodic switching between capturing direct viewer images and processing broadcast viewer images at different frame rates. This periodic action allows the system to generate slow motion streams for broadcast viewers while maintaining stable, non-flickering content for direct viewers during their designated display periods.
3Adaptability or versatility
If multiple video streams are generated from a single camera at different frame rates, then the adaptability to different viewer requirements is improved, but the processing complexity and computing power requirements increase
Solution Approach 1:
The patent performs preliminary capture of all necessary image data at standard frame rates using conventional cameras. The processing of multiple frame rate streams is then performed as a preliminary step before final output, allowing the system to adapt to different viewer requirements without requiring complex real-time processing during playback or transmission.
Solution Approach 2:
The patent creates a universal processing system that can generate multiple video streams at different frame rates from a single camera input. This multi-functional system handles standard frame rate broadcasts, slow motion replays, and direct viewer high frame rate content through a unified processing architecture, reducing the need for separate dedicated equipment for each function.
Data Source
AI summary
The present invention relates to a method and a system for transmitting alternative image content of a physical display to different viewers, comprising: generating at least two different sets of image data, each set of image data comprising a sequence of individual images; displaying the images of said at least two sets of image data in a time-sliced multiplexed manner at a high display frame rate (HDFR) on said physical display; generating at least two video streams of a scene which includes said physical display, wherein at least one video stream consisting of video frames captured synchronously with the displaying of images of one of said at least two sets of image data is generated at a slow motion frame rate (SMFR) which is an integer multiple of a standard broadcasting frame rate (SBFR); and transmitting said video streams to a sub-set of said viewers at said standard broadcasting frame rate (SBFR).