Optical Pick-Up Head Shock Tolerance Control
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Solution Overview
Problem
Optical recording systems face issues with data integrity and performance due to vibrations, which cause track and focus errors, leading to unnecessary pauses and data loss during recording of audio/video data.
Innovation Solution
The system incorporates a shock detector, frequency recorder, and tolerant range controller to dynamically adjust the recording process, allowing the optical pick-up head to continue writing data during slight shocks by expanding the tolerant range and maintaining data integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the optical recorder stops recording when vibrations are detected, then track and focus errors are prevented, but data integrity is compromised and recording continuity is lost
Solution Approach 1:
The patent applies dynamics by making the tolerant range adjustable rather than fixed. The controller dynamically modifies the tolerant range based on shock frequency detection, allowing the system to adapt between strict precision mode (low tolerant range) and continuity mode (high tolerant range), resolving the contradiction between preventing errors and maintaining data integrity
Solution Approach 2:
The patent changes the parameter of tolerant range based on detected shock conditions. By modifying this critical parameter dynamically according to vibration frequency, the system can tolerate larger position deviations during frequent shocks to maintain recording continuity, while maintaining strict precision during stable conditions
2Manufacturing precision
If the optical recorder stops recording during vibrations, then recording accuracy is maintained, but recording continuity is broken and data loss occurs
Solution Approach 1:
The system dynamically adjusts the tolerant range based on real-time shock detection, transitioning between high-precision mode and continuity-mode operations. This dynamic adaptation allows the recorder to maintain accuracy when stable while ensuring continuity during vibrations
Solution Approach 2:
The patent implements feedback by continuously monitoring shock frequency and using this information to adjust the tolerant range. The controller receives feedback about vibration conditions and modifies recording parameters accordingly, enabling the system to balance accuracy and continuity based on actual operating conditions
3Ease of operation
If a fixed tolerant range is used, then the system is simple to control, but it cannot adapt to varying shock conditions and causes unnecessary pauses
Solution Approach 1:
The patent transforms the static tolerant range into a dynamic parameter that automatically adapts to shock conditions. The controller monitors shock frequency and adjusts the tolerant range accordingly, providing adaptability to varying conditions while maintaining ease of operation through automated control
Solution Approach 2:
The system performs self-adjustment by automatically detecting shock conditions and modifying its own operating parameters. The controller monitors vibration frequency and autonomously adjusts the tolerant range without external intervention, combining simplicity with adaptability
Data Source
AI summary
An optical recording system and a control method thereof. The method includes detecting a target signal level. If the change level of the target signal exceeds a tolerant range, it represents that a shock has occurred. The shock frequency is recorded according to the shock, and the tolerant range is adjusted according to the recorded shock frequency. If the change level of the target signal exceeds the tolerant range, a pick-up head stops writing data into the optical storage medium. If the change level of the target signal is less than or equal to the tolerant range, the pick-up head writes data into the optical storage medium.