Interface Circuitry Current Reuse for Lower Sink-Side Power
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Solution Overview
Problem
Conventional high-speed interface circuitries consume excessive power due to independently coupled power sources, particularly at the sink side, which limits the power available for driving receiving circuits in video and audio data transmission.
Innovation Solution
The interface circuitry employs a current reuse mechanism through a transmitter module with an input stage, driving circuit, and regulator circuit, where the regulator circuit provides a regulated voltage using driving current, reducing power consumption by reusing current within the circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If functional blocks (transimpedance amplifier, limiting amplifier, driving circuit) are independently coupled to a power source, then each block can operate with sufficient power, but the overall power consumption increases significantly
Solution Approach 1:
The patent merges the power supply paths of multiple functional blocks by coupling them to a shared power source through a current reuse mechanism. The driving circuit's current is reused to power both the transimpedance amplifier and limiting amplifier, reducing redundant power consumption while ensuring all blocks receive sufficient power for reliable operation.
Solution Approach 2:
The patent recovers and reuses the driving current from the driving circuit to power other functional blocks (transimpedance amplifier and limiting amplifier). Instead of discarding this current after use in the driving circuit, it is redirected and reused to supply power to subsequent stages, thereby reducing overall power consumption.
2Power
If power is provided independently to source side and sink side interface circuitries, then each side has sufficient power for its functions, but the total power consumption of the interface system increases
Solution Approach 1:
The patent merges the power supply architecture by implementing a shared power source for multiple functional blocks within the sink side interface circuitry. This consolidation reduces the total power consumption while maintaining sufficient power availability for all interface functions through efficient current reuse.
Solution Approach 2:
The driving circuit's output current is reused to self-power subsequent functional blocks (transimpedance amplifier and limiting amplifier). This self-service mechanism reduces the need for additional independent power sources and minimizes energy loss in the overall interface system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces power consumption by reusing driving current, enabling efficient transmission of high-quality audio and video data streams while minimizing power usage at both ends of the interface circuitry.
Implementation Method 1
The regulator circuit is coupled between the input stage and the driving circuit, and configured to provide the regulated voltage according to the driving current
Data Source
AI summary
An interface circuitry includes an interface, a transmitter module and a receiver module. The transmitter module includes an input stage, a driving circuit and a regulator circuit. The input stage is powered by a regulated voltage and configured to receive an input signal and generate a first output signal and a second output signal. The driving circuit is configured to drive the interface according to the first output signal and the second output signal and to provide a first data signal, a second data signal and a driving signal. The regulator circuit is coupled between the input stage and the driving circuit, and configured to provide the supply voltage according to the driving current.