Client Apparatus Clock Change History for Time Correction
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Solution Overview
Problem
Existing methods for managing the status of use information from image processing apparatuses, such as printers, face challenges in handling clock deviations and user-set time changes, leading to inaccuracies in time correction when transmitting data to management servers, which can result in unnecessary frequent communication and network load issues.
Innovation Solution
A client apparatus with a reception unit, acquisition unit, storing unit, generation unit, and transmission unit that records and transmits status of use information, including clock change histories, to accurately correct time deviations and manage data transmission efficiently, ensuring accurate time information is provided to the management server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the client apparatus transmits status of use information frequently to the management server, then the accuracy of time information for analysis is improved, but the network load increases
Solution Approach 1:
The client apparatus performs preliminary actions by recording clock change histories and calculating time differences before transmission. The system prepares correction data in advance, including clock change histories and computed time differences, so that when transmission occurs, the management server can directly use this pre-prepared information to accurately correct time deviations without requiring frequent transmissions.
2Device complexity
If the client apparatus corrects time information using only transmission time and server clock, then the device complexity is reduced, but the measurement precision of time information deteriorates when user time changes occur
Solution Approach 1:
The system implements feedback by recording clock change histories that capture when and how the clock settings were modified. This feedback mechanism tracks user-initiated time changes, and the recorded histories are used to calculate accurate time differences between collection and transmission moments, enabling precise time correction even when simple transmission time data is insufficient.
3Measurement precision
If the client apparatus stores detailed clock change histories, then the accuracy of time correction is improved, but the data volume to be transmitted increases
Solution Approach 1:
The client apparatus extracts only the essential elements needed for time correction from the complete clock change histories. Instead of transmitting all detailed clock change records, the system calculates and transmits only the net time difference resulting from all clock changes, separating the detailed history (kept locally) from the essential correction data (transmitted to server).
Data Source
AI summary
A client apparatus, which collects, from an image processing apparatus, information about a status of use of the image processing apparatus and transmits the collected information to a management server, acquires change histories of setting performed on a clock, which are recorded by a system of the client apparatus, both at timing at which the client apparatus acquires the information about the status of use from the image processing apparatus and at timing at which the client apparatus transmits the information to the management server, and also transmits, to the management server, information obtained from the acquired change histories.