NFC Bluetooth Digital Price Display System
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Solution Overview
Problem
Existing electronic price display systems in retail and large mart environments require frequent paper tag replacements, leading to additional costs and labor, and often necessitate network construction and server installation for information updates.
Innovation Solution
A digital price display system utilizing near field communication (NFC) and Bluetooth technology, allowing for real-time information updates through a mobile application, which enables easy installation and operation without the need for additional network construction or server installation, by using a user terminal to select and transmit product information templates to product information display modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If paper tags are used for price display, then installation is simple, but replacement costs and labor costs increase when product information changes
Solution Approach 1:
The patent replaces the mechanical system of physically attaching and replacing paper tags with an electronic system using NFC and Bluetooth communication. The price display module communicates wirelessly with the user terminal, allowing digital price updates without any physical tag replacement. This substitution eliminates the manual labor and time associated with mechanically replacing paper tags while maintaining the simplicity of installation.
2Productivity
If electronic price display systems are implemented, then information can be updated digitally, but additional network construction and server installation are required
Solution Approach 1:
The patent extracts the core communication functionality from complex network infrastructure by utilizing existing NFC and Bluetooth capabilities in mobile terminals. Instead of requiring dedicated server infrastructure or network construction, the system leverages the already-present wireless communication abilities of smartphones and tablets, thereby achieving digital information updates without adding infrastructure complexity.
Solution Approach 2:
The system makes the user terminal (smartphone/tablet) multi-functional by enabling it to serve both as a product information input device and as a price display controller. The terminal's existing NFC and Bluetooth modules are utilized for communication with the price display module, eliminating the need for dedicated infrastructure and allowing a single device to perform multiple functions in the pricing system.
3Ease of manufacture
If existing mobile terminal functions are utilized, then additional infrastructure costs are reduced, but communication reliability may be affected
Solution Approach 1:
The patent introduces a dedicated price display module as an intermediary device that bridges the user terminal and the product information. This module receives data from the terminal via NFC/Bluetooth and maintains a stable display output, acting as a buffer that ensures communication reliability even when utilizing existing mobile terminal functions. The intermediary module handles the communication protocol and data validation, protecting against potential reliability issues.
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
This solution reduces replacement and labor costs by enabling easy management of electronic price displays, providing a cost-effective and efficient method for updating prices in real-time without the need for additional infrastructure, thereby enhancing service delivery at a lower cost.
Implementation Method 1
transmitting an NFC signal to a product information display module by the user terminal
Implementation Method 2
pairing the user terminal with the product information display module based on a Bluetooth function
Data Source
AI summary
The present invention relates to a near field communication (NFC) and a Bluetooth-based digital price display system, and providing a digital price indicator communicating with a server to change information in real time, display information on a product, and replace a tag with an application installed in the digital price indicator.


