Input Data Buffer Gain Control for Lower DRAM Power

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Solution Overview

Problem

The high power consumption associated with the high-speed data transmission capability and high bandwidth utilization of dynamic random access memory (DRAM) necessitates the development of a self-controlled input data buffer circuit capable of automatically adjusting power gain to optimize power consumption.

Innovation Solution

A self-controlled input data buffer circuit comprising a first amplifier, a second amplifier, a feedback signal generator, and a gain control unit, which forms a circuit loop to automatically adjust power gain based on input data signals, optimizing power consumption by dynamically controlling the gain through a feedback mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If high-speed data transmission capability and high bandwidth utilization are implemented in DRAM, then data transmission speed and bandwidth are improved, but power consumption is greatly increased

Engineering Contradiction:
Improvedata transmission speedVSAvoidpower consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power gain adjustment in the input data buffer circuit. The circuit automatically adapts its power consumption characteristics by dynamically controlling the power gain of the buffer based on the characteristics of the incoming data signal, rather than operating at fixed high power levels. This dynamic adaptation allows the system to maintain high-speed data transmission capability when needed while reducing power consumption during normal operation.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the power gain parameter of the input data buffer circuit to optimize power consumption. By adjusting the power gain parameter based on data signal characteristics, the circuit can achieve high-speed transmission when high gain is required while operating at lower power levels during normal conditions, thus resolving the contradiction between speed and power consumption.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If power gain is increased to maintain signal quality during high-speed transmission, then data transmission reliability is improved, but power consumption is increased

Engineering Contradiction:
Improvedata transmission reliabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent employs a feedback mechanism where the input data buffer circuit receives feedback information about the data signal characteristics and automatically adjusts its power gain accordingly. This feedback control ensures that the power gain is optimized to maintain signal quality and transmission reliability only when necessary, rather than continuously operating at high power levels, thus maintaining reliability while reducing overall power consumption.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The input data buffer circuit is designed to self-adjust its power gain based on the characteristics of the incoming data signal. The circuit automatically detects signal conditions and controls its own power consumption characteristics without external intervention, ensuring that power gain is increased only when the data signal characteristics require it for reliable transmission.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12525937B2Self-controlled input data buffer circuit capable of automatically adjusting power gain
Publication Date: 2026.01.13 FUJIAN JINHUA INTEGRATED CIRCUIT CO LTD
  • US12525937B2 patent drawing
  • US12525937B2 patent drawing
  • US12525937B2 patent drawing

AI summary

A self-controlled input data buffer circuit includes a first amplifier, a second amplifier, a feedback signal generator, and a gain control unit. The first amplifier includes a first input terminal for receiving a data signal, a second input terminal for receiving a reference signal, a first output terminal, and a second output terminal. The second amplifier is coupled to the first output terminal of the first amplifier and the second output terminal of the first amplifier. The feedback signal generator is coupled to the second amplifier. The gain control unit is coupled to the feedback signal generator, the second input terminal of the first amplifier, the first output terminal of the first amplifier, and the second output terminal of the first amplifier.