LVDC Transmit Circuit Using Non-Sync Multi-Frequency Data Channels

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Solution Overview

Problem

Current data communication systems face challenges in efficiently transmitting and receiving data over a common bus, particularly in maintaining low power consumption and noise immunity while supporting high data rates, especially in wireless communications.

Innovation Solution

The implementation of Low Voltage Drive Circuits (LVDCs) that convert digital data into analog signals with a low magnitude oscillating component, allowing for low power, high noise immunity, and increased data rates by using multiple frequencies for data streams, which can be received and decoded by other LVDCs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If digital data is transmitted using conventional high-voltage signaling, then data rates can be maintained, but power consumption increases and noise immunity decreases

Engineering Contradiction:
Improvepower consumptionVSAvoidnoise immunity
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent changes the voltage parameter from conventional high-voltage digital signaling to low-voltage analog signaling. The LVDC transmits data by modulating the frequency and phase of low-voltage analog carriers, fundamentally altering the electrical parameters used for data transmission. This enables low power consumption while maintaining noise immunity through the use of multiple frequency carriers and analog modulation techniques that are inherently more resistant to noise than digital voltage levels.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces the conventional digital voltage-based transmission mechanism with an analog frequency-based transmission mechanism. Instead of using voltage transitions to represent binary data, the system uses frequency-modulated analog signals where data is encoded in the spectral characteristics of multiple carriers. This substitution enables operation at lower voltage levels while maintaining robust noise immunity through frequency diversity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Use of energy by moving object

If low voltage signaling is used to reduce power consumption, then energy efficiency improves, but data transmission reliability deteriorates due to increased susceptibility to noise

Engineering Contradiction:
Improvepower consumptionVSAvoidnoise immunity
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent segments the data transmission across multiple frequency carriers rather than using a single voltage level. Each carrier independently carries a portion of the data stream, and the combined signal provides redundancy and noise immunity. This segmentation in the frequency domain allows low-voltage operation while maintaining reliability through diversity across multiple spectral components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent creates a composite signal structure by combining multiple frequency-modulated analog carriers. This composite signal uses different frequency components that can be independently processed and combined, providing both low power consumption through low-voltage operation and high noise immunity through the diverse spectral composition of the transmitted signal.

Inventive Principle:
Principle #40Composite materials

3Productivity

If multiple frequencies are used for data streams, then data rates increase, but system complexity increases

Engineering Contradiction:
Improvedata rateVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a universal LVDC architecture that can transmit multiple data streams simultaneously using different frequency carriers. The same hardware infrastructure (transmitters, receivers, and processing circuits) handles all frequency multiplexed channels, making the system multi-functional. This universal design achieves high data rates through frequency division while avoiding proportional increases in system complexity by reusing the same circuitry across all channels.

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

Data Source

PatentUS12093073B2Transmit side of low voltage drive circuit (LVDC) with non-sync data channels
Publication Date: 2024.09.17 SIGMASENSE LLC
  • US12093073B2 patent drawing
  • US12093073B2 patent drawing
  • US12093073B2 patent drawing

AI summary

A low voltage drive circuit (LVDC) includes a data splitter operable to split transmit digital data into a plurality of streams of digital data. The LVDC further includes a plurality of signal generators operable to receive the plurality of streams of digital data at a plurality of data rates and generate a plurality of analog outbound data signals for the plurality of streams of digital data. A first signal generator receives a first stream of digital data of the plurality of streams of digital data at a first data rate. A second signal generator receives a second stream of digital data of the plurality of streams of digital data at a second data rate. The LVDC further includes a signal combiner operable to combine the plurality of analog outbound data signals into analog outbound data and a drive sense circuit operable to drive the analog outbound data onto a bus.