Wireless HDMI Sink Device Adapting EDID Throughput for Stable Video
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face challenges in maintaining stable throughput and video signal transmission when the radio communication state deteriorates, particularly in HDMI networks, where the throughput values included in EDID may not be achievable due to changing radio communication conditions.
Innovation Solution
A wireless device that acquires radio transmission path characteristics, revises the EDID table by deleting unusable transmission parameter values, and notifies the source device to adjust communication parameters accordingly, ensuring communication is optimized for the current radio communication state, and further considers the type of data being transmitted to select appropriate transmission parameter values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used to replace wired HDMI connection, then wiring is simplified and ease of operation is improved, but stable throughput cannot be guaranteed when radio communication state deteriorates
Solution Approach 1:
The system dynamically adjusts transmission parameters based on real-time radio communication state measurements. The sink device measures the radio communication state and notifies the source device, which then selects appropriate transmission parameters from the EDID table, enabling the system to adapt to changing wireless conditions and maintain stable throughput.
Solution Approach 2:
The invention implements a feedback mechanism where the sink device continuously measures radio communication state and notifies the source device of the current conditions. This feedback loop enables the source device to adjust transmission parameters accordingly, ensuring reliable wireless HDMI transmission despite varying radio conditions.
2Device complexity
If EDID throughput values are used for wireless transmission, then communication setup is simplified, but the throughput values may not be achievable under deteriorating radio conditions
Solution Approach 1:
The system maintains the simple EDID table structure but makes it dynamic by allowing real-time selection of appropriate throughput values based on measured radio communication state. The source device selects from multiple throughput values in the EDID table according to current conditions, preserving setup simplicity while ensuring achievable throughput.
Solution Approach 2:
The invention changes the transmission parameter (throughput value) based on radio communication state measurements. The source device selects appropriate throughput values from the EDID table according to current radio conditions, ensuring that the selected parameters are achievable under the prevailing wireless environment.
3Adaptability or versatility
If wireless adaptors are connected to source and sink devices, then wired connection is replaced, but video blackouts or freezes may occur when effective throughput is lowered
Solution Approach 1:
The system performs preliminary measurement of radio communication state before actual video transmission begins. The sink device measures the radio communication state and notifies the source device in advance, allowing the source device to select appropriate transmission parameters before starting transmission, thereby preventing video blackouts or freezes.
Solution Approach 2:
The system dynamically adjusts transmission parameters based on real-time radio communication state. By continuously monitoring and adapting to changing wireless conditions, the system prevents video transmission failures that would occur with static parameter selection, maintaining stable video delivery despite varying radio conditions.
Data Source
AI summary
A wireless device, includes: a radio transmission path characteristic acquiring unit that acquires information related to a radio transmission path characteristic between a wireless device connected to a source device and a wireless device connected to a sink device; a revising unit that revises a table by deleting an unusable transmission parameter value from a table including a plurality of transmission parameter values usable by the sink device; a communication unit that executes wireless communication from the source device to the sink device in a range of a transmission parameter value represented by the table notified by the notifying unit; and a type information acquiring unit that acquires information related to a type of data which is a target of wireless communication in the communication unit.