Communication Apparatus Data Transfer Coordination
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Solution Overview
Problem
Existing short-range wireless communication systems, such as IrDA and TransferJet, face challenges in controlling data transmission and reception when two devices are brought close together with designated data for transmission, leading to errors and disconnection issues due to mis-operation or distance limitations.
Innovation Solution
A communication apparatus with a notification unit to send a transmission notification before data transfer, a determination unit to determine the transmission order, and a communication control unit to switch between transmission and reception based on the determined order, ensuring adaptive control of data exchange even when devices are close.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If both apparatuses perform data transmission simultaneously when brought close together, then data transfer can be initiated quickly, but communication errors occur and the wireless link may disconnect
Solution Approach 1:
The notification unit sends a transmission notification before actual data transmission begins. This preliminary action allows the receiving apparatus to prepare its reception application and establish proper communication protocols, preventing conflicts that would occur with simultaneous transmission attempts and ensuring reliable data transfer.
Solution Approach 2:
The transmission notification acts as an intermediary signal between the transmitting and receiving apparatuses. It mediates the communication process by informing the receiving side that data transmission is about to occur, allowing for proper coordination and preventing communication errors that would result from unsynchronized transmission.
2Ease of operation
If users manually determine transmission and reception sides through verbal exchange, then simple operation is possible, but mis-operation occurs leading to failed communication
Solution Approach 1:
The apparatus automatically determines its role as transmitting or receiving side based on whether it has data to send and receives transmission notifications, eliminating the need for manual user coordination. The system serves itself by autonomously managing the communication roles, preventing mis-operation while maintaining ease of use.
Solution Approach 2:
The notification unit provides feedback to the receiving apparatus about transmission intent, creating a closed-loop communication system. This feedback mechanism ensures both apparatuses are synchronized on their roles, preventing communication failures that would result from mismatched transmission and reception states.
3Reliability
If apparatuses are brought very close for non-contact communication, then wireless link can be established, but distance limitations make data selection operations difficult
Solution Approach 1:
Users perform data selection and operation setup before bringing the apparatuses close together. The transmission notification is sent after connection is established but before actual data transfer, allowing users to complete complex operations when not constrained by close-proximity requirements, while still achieving reliable wireless connection.
4Adaptability or versatility
If transmission application is activated by both apparatuses, then both can send data, but data communication cannot be carried out due to conflict
Solution Approach 1:
The transmission notification serves as an intermediary coordination mechanism that resolves conflicts when both apparatuses have transmission applications activated. By notifying the receiving apparatus of transmission intent, the system coordinates the actual data transfer timing, allowing bidirectional capability while preventing communication conflicts through proper sequencing.
Data Source
AI summary
When a communication apparatus is brought within a predetermined range of a partner apparatus in a state where data of transmission target is designated, the communication apparatus notifies the partner apparatus of a transmission notification indicating that data transmission is performed, before transmission of the data of transmission target is started. When the communication apparatus has received the transmission notification from the partner apparatus, a transmission order of data is determined, and a communication is performed by switching between transmission of the data to the partner apparatus and reception of the data from the partner apparatus according to the determined transmission order.