Time Drift Correction Circuit for Accurate Expiration Timing

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Solution Overview

Problem

Existing information processing devices lack effective mechanisms to accurately determine and correct time drift, leading to potential inaccuracies in time measurement, which can affect the execution of data and programs with expiration dates.

Innovation Solution

Incorporating a measurement circuit and control circuit to measure time and determine its accuracy, with the ability to correct time drift based on inaccuracy determinations, ensuring precise timekeeping for data and program execution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If time measurement is performed using a simple measurement circuit, then device complexity is reduced, but time measurement accuracy deteriorates due to time drift

Engineering Contradiction:

Improvecircuit complexityVSAvoidtime measurement accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The control circuit periodically determines whether the measured time has drifted from the standard time and automatically executes correction operations when drift is detected, creating a closed-loop feedback system that maintains time accuracy without requiring complex hardware

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The measurement circuit and control circuit work together in an autonomous manner where the control circuit self-manages the time accuracy determination and correction process, eliminating the need for external intervention or complex manual calibration mechanisms

Inventive Principle:

Principle #25Self-service

2Device complexity

If time drift correction is not implemented, then device complexity is reduced, but reliability of time-based operations deteriorates

Engineering Contradiction:

Improveoperation complexityVSAvoidtime-based operation reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The control circuit proactively determines time accuracy and executes correction operations before time drift affects the execution of data or programs with expiration dates, preventing reliability issues rather than reacting to them

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If frequent time correction operations are executed, then time measurement accuracy is improved, but loss of time increases due to correction overhead

Engineering Contradiction:

Improvetime accuracyVSAvoidcorrection overhead time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The control circuit performs time accuracy determination and correction operations periodically at predetermined intervals rather than continuously, balancing time accuracy maintenance with minimal interruption to normal operations and reducing overall correction overhead

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS20260019520A1Information processing apparatus, information processing method, and computer-readable, non-transitory medium

Publication Date: 2026.01.15 PFU LTD

AI summary

An information processing apparatus includes: a measurement circuit to measure time; and a control circuit to determine whether the measured time is accurate and execute a predetermined operation of correcting a time drift based on a determination that the measured time is inaccurate.