Enhanced Monitor EDID for Source-Side Picture Mode Control
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Solution Overview
Problem
Monitors with limited processing power lack the capability to support advanced picture modes, necessitating costly upgrades or reliance on external devices for pixel processing, while existing EDID information only advertises sink device capabilities without defining source device processing.
Innovation Solution
Enhance EDID information to include picture mode parameters, allowing source devices like PCs to perform pixel processing based on these parameters, thereby reducing the need for expensive SoC upgrades in monitors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If monitors upgrade internal processors to support advanced picture modes, then picture processing capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent extracts the picture processing function from the monitor (sink device) and relocates it to the source device (PC). By using EDID extensions to communicate processing requirements, the monitor no longer needs powerful internal processors to handle picture modes, thereby reducing manufacturing cost while maintaining adaptability.
Solution Approach 2:
Instead of the monitor processing pictures locally, the patent inverts the architecture by having the source device perform the processing and send pre-processed images to the monitor. This role reversal eliminates the need for expensive monitor processors while enabling advanced picture modes.
2Adaptability or versatility
If monitors include powerful SoC for picture processing, then processing capability is improved, but device complexity increases
Solution Approach 1:
The patent removes the complex picture processing functionality from the monitor's internal architecture and relocates it to the source device. The monitor only retains basic display functions, significantly reducing device complexity while maintaining the ability to support advanced picture modes through external processing.
Solution Approach 2:
The patent introduces EDID extensions as an intermediary communication mechanism between the source device and monitor. This standard-based intermediary allows the source device to convey processing requirements without requiring direct complex integration or proprietary protocols, simplifying the overall system architecture.
3Ease of manufacture
If picture processing is performed on source device, then processing cost is reduced, but latency may increase
Solution Approach 1:
The source device performs picture processing in advance before the image is sent to the monitor. By pre-processing the images according to EDID-guided picture modes, the system eliminates the need for real-time processing at the monitor, reducing latency while maintaining cost effectiveness.
Data Source
AI summary
Methods and systems are described for processing picture modes of a sink device, such as a monitor, using a source device, such as a personal computer or a gaming system. Given picture mode parameters related to picture-mode processing in an EDID of the sink device, such as brightness, saturation, and the white point, picture-mode-related processing for a sink device may be performed by the source device, thus enabling new display-related features without increasing the cost of the sink device.