Display-Side Repeater Cable for Long HDMI 2.1 Transmission
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Solution Overview
Problem
Passive audio and video signal transmission devices, such as those following the HDMI 2.1 specification, face limitations in transmission distance and signal integrity, particularly when high-speed transmission is required, leading to signal distortion and the need for longer cables or external repeaters.
Innovation Solution
An active audio and video signal transmission device is designed with a repeater integrated into the display-side connector, which includes a microprocessor for controlling the repeater and a power management chip for efficient power use, allowing for extended cable lengths up to 15 meters while maintaining signal integrity and compliance with HDMI 2.1 standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If passive audio and video signal transmission device is used for high-speed transmission, then data transmission rate can be increased to 48 Gbps, but transmission distance is limited to about 3 meters
Solution Approach 1:
The patent merges the repeater function directly into the display-side connector, combining signal reception, signal regeneration, and signal output in a single integrated component. This eliminates the need for separate external repeaters and enables extended transmission distances while maintaining high-speed data transmission rates of 48 Gbps
Solution Approach 2:
The repeater acts as an intermediary component within the display-side connector that receives signals from the cable, regenerates them to compensate for attenuation, and retransmits them to the display device. This intermediary function enables signal transmission over longer distances without degradation
2Reliability
If independent HDMI signal repeater is used to extend transmission distance, then signal distortion is reduced, but device complexity and inconvenience in use increases
Solution Approach 1:
The repeater function is merged into the display-side connector, eliminating the need for separate external repeater devices. This integration reduces the total number of components in the system while maintaining signal integrity over extended transmission distances
Solution Approach 2:
The display-side connector is designed to perform multiple functions: signal reception from the cable, signal processing through the integrated repeater, power management, and signal output to the display device. This multi-functionality eliminates the need for dedicated external repeaters
3Length of stationary object
If cable length is extended without signal distortion, then transmission distance is increased, but power consumption of repeater chip increases
Solution Approach 1:
The repeater chip is designed to efficiently manage its own power consumption by dynamically adjusting its operation based on signal requirements and cable length. The power management circuitry optimizes the balance between transmission distance and power consumption, enabling extended cable lengths while controlling energy usage
Data Source
AI summary
This disclosure provides an active audio and video signal transmission device, which comprises a cable, a display-side connector, and a signal source connector. The cable comprises a first end and a second end. The display-side connector comprises a first shell, a first circuit board configured within the first shell, a first plug configured on the first circuit board and protruded from the first shell, a repeater configured on the first circuit board and electrically connected to the first plug and the first end of the cable, and a microprocessor. The microprocessor is configured on the first circuit board, electrically connected to the repeater, and used for controlling an operation of the repeater. The signal source connector is connected to the second end of the cable. In the disclosure, the repeater is only configured within the display-side connector, and is not configured within the signal source connector.