Sink Device EDID Block Adaptation for Abnormal AV Output
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Solution Overview
Problem
Existing electronic devices face challenges in efficiently communicating and adapting to different block structures of extended display identification data (EDID) information, leading to compatibility issues and abnormal audio/video output states.
Innovation Solution
A sink device and source device configuration that includes processors to transmit and generate EDID information with adjustable block structures based on parameters like the number of blocks and acknowledgments, using hot plug detect signals to optimize data communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed block structure of EDID information is used, then device compatibility is simplified, but adaptability to different output states is reduced
Solution Approach 1:
The patent implements dynamic block structure adjustment by allowing the sink device to modify the number of blocks in EDID information based on detected output states. The processor dynamically changes the block structure from a fixed configuration to an adaptive configuration that responds to real-time output conditions, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent changes the parameter of block number in EDID information structure based on output state detection. When abnormal output states are detected, the system adjusts the number of blocks in the EDID data structure, allowing the same EDID information to adapt to different operational conditions without requiring completely different structures.
2Reliability
If EDID information is transmitted with standard block structure, then data transmission reliability is maintained, but compatibility with abnormal output states is reduced
Solution Approach 1:
The patent implements a feedback mechanism where the sink device monitors its own output state and uses this information to adjust the EDID block structure. The output state detection feeds back to the processor, which then modifies the EDID information accordingly, ensuring that the transmitted data structure matches the actual operational state and maintains both reliability and compatibility.
Solution Approach 2:
The patent performs preliminary adjustment of the EDID block structure before transmitting the data to the source device. By proactively modifying the block structure based on predicted or detected output states, the system prepares the EDID information in advance to ensure compatibility, rather than attempting to adjust it after transmission failures occur.
3Loss of information
If the number of blocks in EDID information is increased, then information completeness is improved, but data transmission efficiency is reduced
Solution Approach 1:
The patent applies partial action by transmitting only the necessary number of blocks in EDID information based on the actual output state. Instead of always transmitting the maximum possible information (excessive action), the system transmits a tailored amount of information that is sufficient for the current operational context, thereby maintaining completeness while improving transmission efficiency.
Data Source
AI summary
A first electronic device includes: at least one processor configured to: transmit first EDID information including a first block structure to a second electronic device; receive AV data from the second electronic device; identify an output state of the AV data; based on that the output state of the AV data is identified as abnormal, requesting a first parameter to the second electronic device; generate third EDID information including a second block structure based on the first parameter, a second parameter related to a number of ACKs obtained based on storing the first EDID information in the at least one memory of the first electronic device, or a third parameter related to a number of blocks of fourth EDID information; and transmit a HPD signal for transmitting third EDID information including the second block structure to the second electronic device.