Printer Encrypted Communication Time Synchronization
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Solution Overview
Problem
Printing apparatuses in MDM systems without a real-time clock function face continuous certificate verification errors due to the lack of time information, leading to increased communication traffic and battery consumption.
Innovation Solution
The printing apparatus acquires time information from an external NTP server before initiating communication with the external mediation apparatus, ensuring successful certificate verification and reducing unnecessary communication and power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the printing apparatus performs encrypted mutual recognition communication without time information, then communication can be initiated, but certificate verification errors occur continuously
Solution Approach 1:
The system performs preliminary actions to acquire time information from an NTP server before initiating encrypted mutual recognition communication. This preliminary time acquisition ensures that certificate verification can proceed correctly without continuous errors, while still allowing the communication function to be initiated.
2Productivity
If the printing apparatus continuously attempts communication without time information, then communication traffic increases, but battery consumption increases
Solution Approach 1:
The system implements a feedback mechanism where communication attempts are monitored and controlled based on time information acquisition status. When time information is not available, the system feedback-controls to limit communication attempts, thereby preventing excessive battery consumption while still maintaining necessary communication functionality.
3Reliability
If the printing apparatus acquires time information from NTP server, then certificate verification succeeds, but communication traffic increases
Solution Approach 1:
Time information is acquired as a preliminary action before encrypted communication begins. By obtaining time information in advance from an NTP server, the system ensures successful certificate verification during subsequent communications, preventing continuous verification errors that would generate excessive communication traffic.
Data Source
AI summary
A printing apparatus including: a printing unit configured to perform printing on a printing medium; and a controller, wherein the printing apparatus is configured to perform communication with an external mediation apparatus configured to perform communication with a management server via the Internet, and wherein the controller is configured to: try to acquire time information necessary for encrypted mutual recognition communication; determine whether the time information has been successfully acquired; and not executing information transmission and reception with respect to the external mediation apparatus by the mutual recognition communication in a case where the determining does not determine that the time information has been successfully acquired, and execute the information transmission and reception with respect to the external mediation apparatus by the mutual recognition communication in a case where the determining determines that the time information has been successfully acquired.