Power-Adaptive Cable Signaling for Stable Data Transmission
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Solution Overview
Problem
In HDMI cable systems, especially Active Optical Cables (AOC) and Active Copper Cables (ACC), insufficient power supply from the source equipment can degrade communication quality due to the need for power to drive conversion circuits, leading to unsatisfactory data transmission.
Innovation Solution
A cable with a current consumption unit that receives power from the source equipment, a current monitor unit to observe the supplied current, and an information transmission unit to send control information based on the observed current, ensuring data transmission quality by adjusting signal parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cable includes a current consumption unit (such as conversion circuits in AOC or ACC) to enable data transmission, then data transmission capability is improved, but the source equipment cannot supply sufficient power leading to communication quality degradation
Solution Approach 1:
The patent implements a feedback mechanism where the cable monitors the current supplied by the source equipment and automatically adjusts its operating parameters. The cable includes a current monitoring unit that detects the available current and adjusts signal transmission parameters accordingly, ensuring reliable data transmission within power constraints. This feedback loop resolves the contradiction by dynamically adapting the system to available power levels.
Solution Approach 2:
The patent introduces dynamic adjustment capabilities where the cable can change its operational characteristics based on real-time power availability. The system transitions from static power consumption to dynamic power adaptation, allowing the cable to optimize its performance according to the source equipment's power supply capacity, thereby maintaining data transmission quality without requiring excessive power.
2Reliability
If the source equipment increases power supply to drive conversion circuits in the cable, then communication quality is improved, but the device complexity and power consumption requirements increase
Solution Approach 1:
The patent enables the cable to serve itself by autonomously monitoring power availability and adjusting its own operating parameters. The current monitoring unit and control logic are integrated within the cable, allowing it to self-regulate its power consumption and signal transmission characteristics without requiring external control or increased power supply capacity from the source equipment.
Solution Approach 2:
The patent utilizes parameter changes in the signal transmission characteristics based on detected current levels. The system adjusts transmission parameters such as signal amplitude, bit rate, or modulation depth according to the available power, maintaining communication quality through parameter optimization rather than through increased power supply or circuit complexity.
Data Source
AI summary
It is made possible to perform data transmission through a cable satisfactorily. A cable is connected between first electronic equipment and second electronic equipment. The cable includes a current consumption unit that receives supply of current from the first electronic equipment through a power supply line, a current monitor unit that observes a current amount the first electronic equipment is capable of supplying to the power supply line, and an information transmission unit that transmits control information according to the observed current amount to the first electronic equipment. The first electronic equipment controls the state of data to be supplied to the cable, on the basis of the control information transmitted thereto from the cable.