Memristive Transistor Input Processing for Variable Threshold Control

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Solution Overview

Problem

Existing methods for processing input variables in transistors are limited in their ability to efficiently utilize non-constant amplitude control signals and variable threshold voltages, which hinders efficient hardware-based calculations.

Innovation Solution

A method utilizing a memristive circuit device to influence the charging current of a transistor's capacitance through a control electrode with a non-constant amplitude control signal, allowing for variable threshold voltage adjustments and enabling efficient hardware-based calculations by leveraging memristive elements to control transistor activation and current flow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed threshold voltage transistor is used, then the device structure is simple, but the ability to process variable threshold voltage operations is limited

Engineering Contradiction:
Improvethreshold voltage variabilityVSAvoiddevice structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces a memristive circuit device as an intermediary component between the control signal source and the transistor control electrode. This memristive device modifies the control signal to dynamically adjust the transistor's threshold voltage, enabling variable threshold operations without redesigning the transistor structure itself. The memristive circuit acts as a mediator that translates control signals into threshold voltage adjustments.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the threshold voltage parameter of the transistor dynamically by utilizing the memristive circuit device to modify the control signal characteristics. By adjusting the control signal amplitude and timing through the memristive element, the transistor operates at different threshold voltage levels, enabling versatile operations such as scalar multiplication with different factors without changing the physical transistor structure.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If non-constant amplitude control signals are applied, then calculation efficiency is improved, but control signal complexity increases

Engineering Contradiction:
Improvecalculation efficiencyVSAvoidcontrol signal complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent employs periodic control signals with varying amplitudes to drive the transistor operations. The control signal is applied periodically with different amplitude levels corresponding to different calculation operations, enabling efficient hardware-based calculations while maintaining a structured and predictable signal pattern that can be generated by standard control circuits.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent utilizes dynamic control signals whose amplitude varies over time to perform different calculation operations. The control signal amplitude is modulated dynamically to reflect the input variables and operation types, enabling the system to perform scalar multiplication, addition, and other operations efficiently by simply changing the signal characteristics rather than reconfiguring the hardware.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If memristive circuit devices are used to influence charging current, then calculation versatility is improved, but device complexity increases

Engineering Contradiction:
Improvecalculation versatilityVSAvoidcircuit device complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs memristive circuit devices that serve multiple functions: they act as variable resistors for controlling charging current, as memory elements for storing state information, and as signal modifiers for adjusting control signals. This multi-functionality enables diverse calculation operations including scalar multiplication with different factors, addition, and threshold voltage adjustment using a single type of component, thereby improving calculation versatility without proportionally increasing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enables efficient hardware-based calculations by allowing transistors to switch between conductive and non-conductive states based on input variables, facilitating operations such as scalar multiplication and reducing leakage currents.

Implementation Method 1

providing the first transistor and a first memristive circuit device which characterizes a first input variable associated with the first transistor, wherein a charging current of a capacitance associated with, for example connected to, a control electrode of the first transistor can be influenced by means of the first memristive circuit device

Methodology Applied
Scientific EffectMemristive effect:

Implementation Method 2

a charging current of a capacitance associated with, for example connected to, a control electrode of the first transistor can be influenced

Methodology Applied
Scientific EffectCapacitance: Capacitance

Data Source

PatentUS12463637B2Method for processing input variables by means of a processing device having at least one transistor, device for executing the method, computing device, and use
Publication Date: 2025.11.04 ROBERT BOSCH GMBH
  • US12463637B2 patent drawing
  • US12463637B2 patent drawing
  • US12463637B2 patent drawing

AI summary

A method for processing input variables using a processing device having at least a first transistor, for example a field-effect transistor. The method includes: providing the first transistor and a first memristive circuit device which characterizes a first input variable associated with the first transistor, wherein a charging current of a capacitor associated with a control electrode of the first transistor can be influenced by means of the first memristive element; applying to the control electrode of the first transistor a first control signal which characterizes a second input variable associated with the first transistor and which has at least periodically a non-constant amplitude; ascertaining a first output variable on the basis of a first variable characterizing a time curve of a current through a load path of the first transistor.