Video Source Display Capability Feedback
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Solution Overview
Problem
Current multimedia entertainment systems face limitations in utilizing the full capabilities of video displays and sources due to differences in color gamut, resolution, and processing capabilities, leading to inefficient signal processing and transmission.
Innovation Solution
A multimedia entertainment system that includes a communication link between a video source and display, where the display provides dynamic and static display characteristic information to the source, allowing the source to adjust its signal processing to match the display's capabilities, thereby optimizing video signal rendering and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the source sends signals corresponding to colors outside the television's gamut capability, then the television can potentially utilize its full display capability, but the television must map the out-of-gamut colors to in-gamut colors using valuable processing time
Solution Approach 1:
The television determines its own gamut capability and communicates this information to the source device. The source device then pre-processes the video signal to convert colors to within the television's gamut before transmission, eliminating the need for real-time color mapping at the television and reducing processing time.
Solution Approach 2:
The television provides feedback about its gamut capability to the source device through the communication link. This feedback enables the source device to adjust its signal processing parameters to match the television's capabilities, optimizing the balance between display capability utilization and processing time.
2Adaptability or versatility
If the source is configured to produce signals corresponding to images with colors outside the receiving television's gamut capability, then the full gamut of the television can be utilized, but the source must perform complex processing and rendering
Solution Approach 1:
The source device receives gamut capability information from the television and performs preliminary color space conversion and signal adjustment before video rendering. This pre-processing simplifies the television's processing requirements while still enabling full gamut utilization.
Solution Approach 2:
The source device changes its signal output parameters (color space, resolution, refresh rate) based on the television's reported capabilities. This parameter adaptation allows the source to optimize its processing complexity while matching the display's actual capabilities.
3Manufacturing precision
If the source performs extensive processing to generate frames at 30 frames-per-second, then the video quality can be maintained, but the limited bandwidth of the connection between source and television constrains the transmission
Solution Approach 1:
The television communicates its supported resolutions and refresh rates to the source. The source adjusts its output parameters (resolution, frame rate, color depth) to match the television's capabilities, optimizing the balance between video quality and bandwidth utilization.
Solution Approach 2:
The source device creates an optimized copy of the video signal that is specifically tailored to the television's capabilities. Instead of transmitting the full-resolution, high-bit-depth signal, the source generates a version that matches the display's actual processing and display capabilities, reducing bandwidth requirements while maintaining perceived quality.
Data Source
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AI summary
In general, in an aspect, the invention provides a multimedia entertainment system (5) including a communication link (20), a video source (10) coupled to the communication link and configured to produce a video signal and provide the video signal to the communication link, a video display (15) coupled to the communication link and configured to receive the video signal from the video source via the communication link, and to provide dynamic display characteristic information indicative of a display capability of the video display to the video source via the communication link, wherein the video source is configured to receive the dynamic display characteristic information and to produce the video signal as a function of the dynamic display characteristic information, and wherein the video display is configured to display a video image in accordance with the video signal provided by the video source.