Electronic Device HDMI Version Adaptation via EDID and InfoFrames
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Solution Overview
Problem
When electronic devices compliant with different HDMI standard versions are connected, issues such as video display and audio output problems can occur due to compatibility issues, as existing technologies lack effective methods to determine and adapt to the compliant HDMI version in real-time.
Innovation Solution
An electronic device equipped with a memory to store EDID data for different HDMI versions, a transmitter to send EDID based on the supported version, and a receiver to determine the operational HDMI version based on response information or signal attributes, allowing seamless switching between HDMI 1.4b and 2.x standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic devices with different HDMI standard versions are connected, then connectivity is achieved, but video display and audio output problems occur due to version incompatibility
Solution Approach 1:
The patent implements dynamic version adaptation by allowing the electronic device to switch between HDMI 1.4b and 2.x operational modes based on the connected device's capabilities. The system dynamically determines the appropriate HDMI version through EDID reading and InfoFrame detection, then adjusts its transmission and reception parameters accordingly, resolving the contradiction between broad compatibility and stable operation.
Solution Approach 2:
The patent changes operational parameters (HDMI version mode) based on detected device attributes. By reading EDID data and detecting InfoFrame presence, the system identifies the connected device's HDMI version capability and adjusts its own operational parameters to match, ensuring reliable video and audio transmission across different version combinations.
2Adaptability or versatility
If the electronic device supports only HDMI 1.4b, then connection with older devices is ensured, but advanced features of HDMI 2.x cannot be utilized
Solution Approach 1:
The patent makes the electronic device universal by implementing support for both HDMI 1.4b and 2.x standards. The device can function in either mode depending on the connected device, allowing it to maintain backward compatibility with older HDMI 1.4b devices while also being capable of utilizing advanced HDMI 2.x features when connected to newer devices that support them.
Solution Approach 2:
The system dynamically switches between HDMI 1.4b and 2.x operational modes based on the connected device's capabilities. When an HDMI 2.x device is detected (through InfoFrame or EDID analysis), the system activates HDMI 2.x mode to enable advanced features; when only HDMI 1.4b compatibility is detected, it falls back to 1.4b mode, thus achieving both backward compatibility and forward capability utilization.
3Productivity
If the electronic device supports only HDMI 2.x, then advanced features are available, but connection with HDMI 1.4b devices fails
Solution Approach 1:
The patent implements multi-functionality by equipping the electronic device with dual-mode HDMI support. The device maintains HDMI 2.x capabilities for accessing advanced features while simultaneously incorporating HDMI 1.4b compatibility mode. This allows the device to universally connect with both older 1.4b devices and newer 2.x devices, selecting the appropriate mode based on the connected device's capabilities.
Solution Approach 2:
The system performs preliminary detection of the connected device's HDMI version capability through EDID reading and InfoFrame detection before establishing the connection mode. This preliminary action allows the system to proactively configure the appropriate HDMI version (1.4b or 2.x) in advance, ensuring both advanced feature availability when possible and backward compatibility when required.
4Ease of operation
If the electronic device uses fixed HDMI version mode, then operation is simple, but compatibility with unknown devices is poor
Solution Approach 1:
The patent implements self-service by enabling the electronic device to automatically detect and determine the appropriate HDMI version mode without user intervention. The system reads EDID data, detects InfoFrame presence, and autonomously decides whether to operate in HDMI 1.4b or 2.x mode, eliminating the need for manual configuration while ensuring compatibility with unknown devices.
Solution Approach 2:
The system uses feedback from EDID reading and InfoFrame detection to automatically adjust its operational mode. By continuously monitoring the connected device's response and capability information, the system receives feedback that guides its version selection, ensuring both ease of operation (automatic selection) and adaptability (correct version matching) without requiring user input.
Data Source
AI summary
According to one embodiment, an electronic device includes a memory that stores a first EDID including an identification bit set to respond to a separate electronic device when the separate electronic device supports a first version of the HDMI, a transmitter that transmits the first EDID, and a receiver. When the receiver receives first control information including response information set in response to the identification bit, a compliant version of the HDMI to be operated is determined according to the response information. When the receiver does not receive the first control information, the compliant version of the HDMI to be operated is determined according to an attribute of a video and audio signal transmitted from the separate electronic device.