Voltage Drop Intention Detection in Data Storage Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing data storage devices using nonvolatile memory devices lack the ability to distinguish between intentional and unintentional drops in operating voltage, which can lead to data loss and instability.
Innovation Solution
A data storage device equipped with a voltage detector and control unit that determines whether the operating voltage drop is intentional or unintentional by analyzing the elapsed time and holding time based on predefined reference voltages and times, allowing for appropriate recovery procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If voltage drop detection is implemented without time analysis, then detection speed is improved, but accuracy in determining intentional vs unintentional voltage drops deteriorates
Solution Approach 1:
The system pre-establishes reference time values and reference voltage thresholds before operation. When a voltage drop occurs, the control unit immediately compares the actual elapsed time and voltage levels against these pre-set references, enabling rapid determination of whether the voltage drop is intentional or unintentional without requiring complex real-time analysis
Solution Approach 2:
The patent replaces complex mechanical or hardware-based voltage stabilization mechanisms with a control unit that uses time-based logic and reference comparisons to determine voltage drop intentions. This electronic/software-based approach substitutes physical intervention with intelligent detection and classification algorithms
2Measurement precision
If comprehensive time analysis is performed to distinguish intentional and unintentional voltage drops, then determination accuracy is improved, but processing time and system complexity increase
Solution Approach 1:
The control unit segments the voltage drop analysis into distinct time phases: an initial drop phase (comparing elapsed time from first reference voltage to second reference voltage) and a sustained phase (comparing holding time at or below the second reference voltage). Each phase has its own reference time threshold, allowing the system to systematically evaluate different aspects of the voltage drop without requiring a single complex analysis mechanism
Solution Approach 2:
The system changes the parameter being measured from just voltage level to a combination of voltage level, elapsed time, and holding time. By introducing time-based parameters (first reference time, second reference time) alongside voltage thresholds, the system enriches the detection capability without requiring complex hardware modifications, simply by monitoring temporal characteristics of the voltage signal
Data Source
AI summary
A data storage device includes a nonvolatile memory device; a voltage detector suitable for detecting an operating voltage of the nonvolatile memory device; and a control unit suitable for making a first determination whether the operating voltage is dropped intentionally or unintentionally based on a first reference time and an elapsed time for which the operating voltage decreases from a first reference voltage to a second reference voltage.