RFID Tag Display Using Font Repository for Low Power Data Processing

Solution Overview

Problem

RFID tags with displays face challenges in efficiently presenting large amounts of information due to insufficient storage capacity and high power consumption during data transmission, especially when using image data, which requires significant data volume and processing time.

Innovation Solution

The RFID tag incorporates a control circuit with a font repository and data processor that creates presentation data using character codes and font data, reducing data volume by using ruled-line, character-string, and image data, and includes a power management system with photovoltaic panels to generate electricity, allowing for efficient data processing and reduced power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If image data is used to present large amounts of information on the RFID tag display, then the information presentation capability is improved, but the data transmission time and power consumption increase significantly

Engineering Contradiction:

Improveinformation presentation capabilityVSAvoiddata transmission time

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

The patent changes the data representation parameters by using character codes and font data instead of raw image data. The control circuit converts character codes into display data by referencing font data stored in the ROM, which significantly reduces the data transmission volume and processing time while maintaining information presentation capability.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If image data is used to present large amounts of information on the RFID tag display, then the information presentation capability is improved, but the power consumption increases significantly

Engineering Contradiction:

Improveinformation presentation capabilityVSAvoidpower consumption

Core Design Contradiction:

Quantity of substanceVSUse of energy by moving object

Solution Approach 1:

The patent changes the data representation parameters by using character codes and font data instead of raw image data. The control circuit converts character codes into display data by referencing font data stored in the ROM, which significantly reduces the data transmission volume and processing time while maintaining information presentation capability.

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If more storage capacity is allocated to store large amounts of information, then the information storage capability is improved, but the device complexity and cost increase

Engineering Contradiction:

Improveinformation storage capabilityVSAvoidROM capacity

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent changes the data representation parameters by using character codes and font data instead of raw image data. The control circuit converts character codes into display data by referencing font data stored in the ROM, which significantly reduces the data transmission volume and processing time while maintaining information presentation capability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses font data as a template or copy that can be reused for multiple character codes. Instead of storing complete image data for each character, the system stores a single font data structure and references it when generating display data for different characters, thereby reducing the overall storage requirement.

Inventive Principle:

Principle #26Copying

4Quantity of substance

If complex patterns like barcodes and two-dimensional codes are included in the presentation, then the information density is improved, but the data processing time and storage requirements increase

Engineering Contradiction:

Improveinformation densityVSAvoiddata processing time

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

The patent changes the data representation parameters by using character codes and font data instead of raw image data. The control circuit converts character codes into display data by referencing font data stored in the ROM, which significantly reduces the data transmission volume and processing time while maintaining information presentation capability.

Inventive Principle:

Principle #35Parameter changes

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 configuration enables stable and high-speed presentation processing with low power consumption, even with large amounts of information, by reducing data transmission time and storage requirements, and allows for the inclusion of complex patterns like barcodes and two-dimensional codes without increasing the ROM capacity or power consumption.

Implementation Method 1

power management system with photovoltaic panels to generate electricity

Methodology Applied

Scientific EffectPhotovoltaic effect: Photovoltaic Effect

Data Source

PatentUS11880729B2RFID tag

Publication Date: 2024.01.23 KYOCERA CORP

AI summary

An RFID tag includes an IC for RFID to which information for presentation can be written by wireless communication, a display, and a control circuit configured to output presentation data to the display. The control circuit includes a font repository storing font data and a data processor configured to create the presentation data by using one or more character codes and the font data, the one or more character codes being included in the information for presentation.