Parallel Interface Circuit With Adaptive Output Amplitude Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-speed interface circuits face challenges in achieving both signal integrity and reducing power consumption, particularly when parallelizing signal transmitter circuits, as increased power consumption leads to noise interference and signal deterioration.
Innovation Solution
An interface circuit configuration that adjusts the amplitude of output signals based on the number of operating signal transmitter circuits, increasing amplitude with more circuits to ensure signal integrity and reducing amplitude with fewer circuits to minimize power consumption, using a power supply voltage control circuit to manage the first power supply voltage accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of signal transmitter circuits is increased to achieve high data band communications, then the data transmission capacity is improved, but the power consumption becomes large
Solution Approach 1:
The patent applies dynamics by making the power supply voltage variable rather than fixed. The power supply voltage control circuit dynamically adjusts the voltage level based on the number of operating signal transmitter circuits, allowing the system to adapt its power consumption characteristics to the actual operational requirements and maintain optimal signal integrity under varying load conditions
Solution Approach 2:
The patent changes the parameter of power supply voltage based on the number of operating circuits. When more signal transmitter circuits operate, the power supply voltage is increased to maintain signal integrity; when fewer circuits operate, the voltage is reduced to minimize power consumption. This parameter adaptation resolves the contradiction between maintaining performance and reducing energy use
2Use of energy by moving object
If the amplitude of output signals is reduced to decrease power consumption, then the power consumption is reduced, but signal integrity deteriorates
Solution Approach 1:
The patent changes the power supply voltage parameter dynamically based on the number of operating signal transmitter circuits. This allows the system to use lower voltage (and thus lower power consumption) when fewer circuits are active, while maintaining higher voltage for signal integrity when more circuits operate simultaneously
3Productivity
If the number of signal transmitter circuits is increased to increase data band, then the communication capacity is improved, but noise of power supply increases causing signal deterioration
Solution Approach 1:
The patent adjusts the power supply voltage parameter according to the number of operating circuits. By increasing voltage when more circuits operate, the system compensates for the increased noise and signal deterioration, thereby maintaining signal integrity despite the higher noise environment created by parallel circuit operation
Data Source
AI summary
An interface circuit includes: a plurality of signal transmitter circuits each receiving an input signal and outputting an output signal responsive to a first power supply voltage based on the input signal; an operation control circuit controlling operation/suspension of the signal transmitter circuits; and an amplitude control circuit exerting control so that the first power supply voltage be greater with increase in the number of operating circuits among the signal transmitter circuits and thereby the amplitude of the output signals of the signal transmitter circuits become greater.