Secure Data Transmission via Time-Delayed Multiplexing

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Solution Overview

Problem

Existing wireless communication systems lack effective means to securely transmit data to a specific receiver location, as they often result in data interception and spoofing due to uncontrolled signal reception.

Innovation Solution

A secure data transmission system that employs a time multiplexer, a time delay unit, and a receiver tracker to generate and transmit multiple output data streams with precise time delays, ensuring that data is received only at the intended location.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If wireless communication systems transmit signals into the air with little control of which receivers detect the transmitted data, then transmission coverage is improved, but data interception and security are worsened

Engineering Contradiction:
Improvetransmission coverage areaVSAvoiddata interception
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent segments the transmission process by dividing the data stream into multiple time slots and assigning different transmitters to different time slots. This temporal segmentation ensures that only the intended receiver at the target location can reconstruct the complete data stream, while other receivers intercept only fragmented or incomplete data, thereby improving security without significantly limiting coverage area.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent employs preliminary actions by pre-calculating and applying unique time delays to each transmitter based on their respective distances to the target receiver. These pre-computed time delays ensure that all transmitted signal components arrive simultaneously at the target location, enabling coherent data reconstruction only there, while preventing interception at other locations.

Inventive Principle:
Principle #10Preliminary action

2Object-affected harmful factors

If directional antennas or reduced power are used to improve spatial isolation, then data interception is reduced, but transmission reliability and coverage are worsened

Engineering Contradiction:
Improvedata interceptionVSAvoidtransmission reliability
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent implements periodic action by cyclically switching between multiple transmitters in a time-division manner. Each transmitter transmits during its designated time slot, and the sequence repeats periodically. This periodic transmission pattern ensures that the target receiver continuously receives complete data streams from all transmitters at appropriate intervals, maintaining high transmission reliability without requiring directional antennas or power reduction.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The patent introduces time delay as an intermediary mechanism that mediates between the transmitters and the target receiver. By precisely controlling the time delay for each transmitter signal, the system ensures that all signals converge coherently at the target location, acting as a temporal intermediary that enables reliable transmission without spatial isolation techniques like directional antennas.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If multiple transmitters transmit simultaneously to improve transmission capacity, then productivity is improved, but signal interference and data corruption are worsened

Engineering Contradiction:
Improvetransmission capacityVSAvoiddata corruption
Core Design Contradiction:
ProductivityVSLoss of information

Solution Approach 1:

The patent segments the transmission timeline by assigning distinct time slots to different transmitters. This temporal segmentation allows multiple transmitters to operate simultaneously in terms of overall system capacity while preventing interference at the receiver level, as each transmitter's data is transmitted during its designated slot without overlap, eliminating data corruption from simultaneous transmissions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent applies preliminary action by pre-calculating the optimal time delay for each transmitter based on its distance to the target receiver before transmission begins. These pre-computed delays ensure that when multiple transmitters transmit in sequence, their signals arrive coherently at the target location at the same moment, preventing data corruption while maximizing transmission capacity through efficient time utilization.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12207217B2Secure data transmission system and method for targeting specific receiver locations
Publication Date: 2025.01.21 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
  • US12207217B2 patent drawing
  • US12207217B2 patent drawing
  • US12207217B2 patent drawing

AI summary

A secure data transmission system and method for targeting specific receiver locations. The secure data transmission system includes a time multiplexer, a time delay unit, a receiver tacker, and a plurality of transmitters. Additionally, the secure data transmission system may include a multiplexing sequence, a digital switch, a plurality of empty vectors, a range calculator, a delay estimator, and a plurality of stream time delays. The method for targeting specific receiver location includes receiving an input data stream, multiplexing the input data steam, receiving at least one instantaneous receiver locations, calculating a plurality of transmission ranges for each of the plurality of output data streams, calculating a plurality of time delays for each of the plurality of output data streams, delaying each of the plurality of output data streams according its calculated time delay, and transmitting each of the plurality of output data streams.