Dog Training Transmitter Forward Error Correction Range

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Solution Overview

Problem

Remote dog training systems face limitations in effective range and reliability due to factors like distance, terrain, and interference, which can lead to reduced system performance and increased costs when trying to improve component performance.

Innovation Solution

The implementation of forward error correction and repeat transmission in the signal processing of the dog training system, using BCH(15, 7) coding to generate error-correcting codewords and ensure reliable communication between the transmitter and receiver, thereby increasing the system's effective range and reliability without increasing component costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If transmitted power output, receiver sensitivity and antenna efficiency are increased to increase the effective range of the system, then the effective range is improved, but the cost of the system components increases

Engineering Contradiction:

Improveeffective rangeVSAvoidcost of system components

Core Design Contradiction:

Length of stationary objectVSEase of manufacture

Solution Approach 1:

The patent changes the parameters of the signal transmission by implementing forward error correction coding (BCH(15,7)) and repeating transmissions. This allows the system to achieve better range performance through signal processing rather than increasing power output or receiver sensitivity, thereby avoiding the cost increase associated with improving component performance.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the mechanical/electrical approach of increasing power output and receiver sensitivity with a signal processing approach. By using forward error correction and repetition schemes, the system achieves improved range through software/firmware processing rather than hardware component upgrades, thus avoiding increased component costs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If forward error correction and repeat transmission are implemented to increase reliability, then the reliability is improved, but the signal processing complexity increases

Engineering Contradiction:

Improvereliability of transmissionVSAvoidsignal processing complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses BCH(15,7) coding parameters which provide a balanced approach between error correction capability and processing complexity. The specific choice of (15,7) parameters allows correction of up to 2 errors per 15-bit codeword, providing reliable transmission without excessive processing complexity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent implements repeat transmission where the entire packet is retransmitted upon detecting errors, rather than using more complex retransmission schemes. This partial action approach (retransmitting only when needed) provides improved reliability while keeping the overall system complexity manageable.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentEP1816775B1Signal and protocol for remote dog trainer signalling with forward error correction

Publication Date: 2021.01.13 RADIO SYST CORP

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AI summary

A transmitter for a dog training system, the transmitter having a command input device for inputting a training command input into the transmitter, and a transmitter controller connected to the command input device. The transmitter controller translates the training command input into identification data and command data. The transmitter controller also generates at least one forward error correction codeword from the identification data and the command data.