FRL Link Training Optimization for HDMI 2.1 Electronic Devices
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Solution Overview
Problem
Existing electronic devices face challenges in optimizing transmission characteristics for source devices with HDMI 2.1, leading to inefficiencies in FRL link training and content signal processing, particularly in supporting high-definition multimedia interfaces beyond Full HD resolution.
Innovation Solution
An electronic device with a processor that searches for and stores FRL transmission bandwidth data, performs FRL link training, and processes content signals, while also adjusting sink equalizer characteristics to ensure stable transmission and reproduction of high-resolution content signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FRL link training is performed without pre-stored transmission bandwidth data, then the device can support various source devices, but the link training time increases
Solution Approach 1:
The patent applies preliminary action by pre-storing FRL transmission bandwidth data corresponding to multiple source devices in a memory before actual connection occurs. When a source device connects, the processor quickly searches the pre-stored data to determine the appropriate bandwidth value, avoiding time-consuming trial-and-error link training. This pre-preparation significantly reduces FRL link training time while ensuring reliable connection establishment.
2Manufacturing precision
If transmission characteristic data is optimized for each source device, then signal reproduction quality improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission characteristic data into discrete, source-device-specific entries stored in memory. Each source device has its own optimized transmission bandwidth data, allowing the system to select the appropriate segment (data set) based on the connected device. This segmentation enables high-quality reproduction for each device without requiring a single complex adaptive system, as the processor simply searches and selects from pre-segmented data entries.
3Productivity
If FRL transmission bandwidth data is searched and stored for each source device, then transmission efficiency improves, but memory usage increases
Solution Approach 1:
The patent applies copying by creating and storing simplified data representations (copies) of transmission characteristics for multiple source devices in memory. Rather than storing complete device profiles or performing complex real-time analysis, the system stores condensed bandwidth data copies that can be quickly searched and applied. This copying approach enables efficient content signal processing by having ready-to-use transmission parameters available, while keeping memory requirements manageable through data compression and selective storage.
Data Source
AI summary
An electronic device and an operating method thereof are provided. The electronic device includes a receiver, a memory, a processor configured to search the memory for fixed rate link (FRL) transmission bandwidth data for a source device in response to an electrical connection to the source device, perform FRL link training with a bandwidth value of the FRL transmission bandwidth data determined according to a FRL transmission bandwidth data search result, and process a content signal transmitted with a transmission bandwidth when the FRL link training is completed, and a reproducing device configured to perform a reproducing operation based on the processed content signal.