Self-Controlled Equalization Circuit for DRAM Noise and Gain Control

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Solution Overview

Problem

Existing DRAM systems face challenges with high-speed data transmission that introduce channel noise and increase power consumption, necessitating a solution for minimizing noise interference and optimizing power consumption.

Innovation Solution

A self-controlled equalization circuit comprising a first and second amplifier, feedback signal generator, frequency delay signal generator, feedback enabling unit, equalization control unit, and gain control unit, which form a circuit loop to perform automatic gain control and equalization, reducing noise interference and optimizing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If high-speed data transmission capability is implemented in DRAM, then data transmission speed is improved, but channel noise is increased

Engineering Contradiction:

Improvedata transmission speedVSAvoidchannel noise

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent implements a feedback mechanism where the output signal is fed back through a feedback path to the input stage. This feedback allows the circuit to automatically adjust and equalize the signal levels, compensating for noise introduced during high-speed transmission. The feedback loop enables continuous monitoring and correction of signal degradation.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent employs dynamic equalization control where the equalization amount is automatically adjusted based on the actual transmission conditions. The circuit dynamically adapts its equalization parameters to optimize signal quality at different transmission speeds, rather than using fixed equalization values.

Inventive Principle:

Principle #15Dynamics

2Speed

If high-speed data transmission capability is implemented in DRAM, then data transmission speed is improved, but power consumption is increased

Engineering Contradiction:

Improvedata transmission speedVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power management through automatic gain control that adjusts amplification levels based on actual signal conditions. The equalization circuit dynamically modifies its operation to provide only the necessary equalization for current transmission requirements, avoiding excessive power consumption while maintaining high-speed capability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes operational parameters dynamically by adjusting equalization amounts and gain levels based on transmission speed and signal quality requirements. This allows the circuit to optimize power consumption by using minimal equalization at lower speeds and scaling up only when high-speed transmission is required.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If automatic gain control mechanism is added to minimize noise, then noise interference is reduced, but device complexity is increased

Engineering Contradiction:

Improvenoise interferenceVSAvoidcircuit complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into integrated circuit blocks. The equalization control unit, gain control unit, and feedback mechanisms are merged into a unified automatic equalization system that operates as a cohesive whole rather than separate independent components, reducing overall circuit complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements self-controlled equalization where the circuit automatically adjusts its own parameters without external intervention. The automatic gain control and equalization mechanisms self-regulate based on feedback from the transmission channel, eliminating the need for manual adjustment circuits and reducing complexity.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12562700B2Self-controlled equalization circuit capable of providing an automatic gain control mechanism

Publication Date: 2026.02.24 FUJIAN JINHUA INTEGRATED CIRCUIT CO LTD

AI summary

A self-controlled equalization circuit includes a first amplifier, a second amplifier, a feedback signal generator, a frequency delay signal generator, a feedback enabling unit, an equalization control unit, and a gain control unit. The first amplifier includes a first input terminal and a second input terminal. The second amplifier is coupled to the first amplifier. The feedback signal generator is coupled to the second amplifier. The frequency delay signal generator is used for receiving a frequency signal. The feedback enabling unit is coupled to the output terminal of the frequency delay signal generator and the feedback signal generator. The equalization control unit is coupled to the feedback signal generator, the feedback enabling unit, and the first amplifier. The gain control unit is coupled to the feedback signal generator, the second input terminal of the first amplifier, and output terminals of the first amplifier.