Non-contact Communication Device Active Side Function via Carrier Wave
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing non-contact IC card systems require complex configurations and increased manufacturing costs due to the need for both passive and active side functions, complicating the implementation of active side functionality.
Innovation Solution
A non-contact communication device and method that utilizes a carrier wave to receive and send commands between devices, allowing a non-contact communication device to operate as an active side by receiving commands from a reader/writer and sending commands to another device using the same carrier wave, simplifying the configuration and eliminating the need for separate active and passive side functionalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-contact IC card is equipped with both passive side and active side functions, then the device can operate in multiple communication modes, but the configuration becomes complex and manufacturing cost increases
Solution Approach 1:
The non-contact IC card is designed with a universal communication unit that can operate in both passive side and active side modes using the same hardware components. The communication unit receives carrier waves from a reader/writer and can actively send commands to other non-contact IC cards, eliminating the need for separate dedicated hardware for each mode.
Solution Approach 2:
Instead of the conventional approach where passive side devices respond to active side devices, this invention enables the passive side non-contact IC card to invert roles and actively send commands to other passive side cards. The card receives carrier waves passively but uses load modulation to actively transmit commands, reversing the traditional active-passive relationship.
2Adaptability or versatility
If a non-contact IC card is equipped with both passive side and active side functions, then the device can operate in multiple communication modes, but manufacturing cost increases
Solution Approach 1:
The communication unit is designed as a universal component that performs both passive reception and active transmission functions. By using the same hardware for both modes, the manufacturing cost is reduced compared to producing separate dedicated passive and active side devices.
Solution Approach 2:
The invention merges the passive side reception function and active side transmission function into a single integrated communication unit. The communication unit combines carrier wave reception, command processing, and load modulation capabilities in one component, simplifying manufacturing.
3Use of energy by moving object
If a non-contact communication device uses load modulation of carrier wave to send commands, then power consumption is reduced, but the device cannot function as an active side initiator
Solution Approach 1:
The reader/writer acts as an intermediary that provides the carrier wave for communication. The non-contact IC card uses this external carrier wave and applies load modulation to embed commands, allowing the card to send commands actively without needing its own carrier wave generation capability, thus maintaining low power consumption.
Solution Approach 2:
The non-contact IC card uses the carrier wave provided by the reader/writer as a free resource to send commands to other cards. By utilizing the existing electromagnetic field in the communication system, the card achieves active side functionality without the energy cost of generating its own carrier wave.
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 approach enables a simpler configuration for implementing active side functions, reducing manufacturing costs and allowing the non-contact communication device to operate as an active side in near-field non-contact wireless communication systems.
Implementation Method 1
a reader/writer and a non-contact communication device, the reader/writer outputting a carrier wave to send a command to the non-contact communication device
Implementation Method 2
the non-contact communication device receiving the command from the reader/writer using the carrier wave output from the reader/writer
Data Source
AI summary
The present technology relates to a non-contact communication device, a non-contact communication method, a program, and a non-contact communication system capable of achieving a simpler configuration to implement an active side function. A non-contact communication device includes a communication unit that receives a command from a first device using a carrier wave output from the first device and sends a command to a second device using the carrier wave output from the first device. The present technology can be used in a non-contact communication device or the like.