Pre-Formed Servo Patterns for Data Storage Tracking Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional data storage methods using Scanning Probe Microscope-based Data Storage Systems face errors and increased manufacturing time due to the generation of tracking position error signals through servo pits after recording media assembly, which affects data storage accuracy and cost.
Innovation Solution
A data storage apparatus and method that forms striped sync patterns and inclined servo patterns on the recording medium before assembly, using cantilever units, comparators, and a digital logic processor to generate tracking position error signals, reducing errors and manufacturing costs by pre-forming patterns capable of detecting precise track positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If servo pits are recorded after recording media assembly to generate tracking position error signals, then data storage accuracy can be maintained, but manufacturing time increases and errors occur during servo pit recording
Solution Approach 1:
The patent applies preliminary action by forming the servo pattern and sync pattern on the recording medium before assembly with the storage device. Specifically, the servo pattern is formed at a first location and the sync pattern is formed at a second location on the recording medium prior to assembly, eliminating the need for post-assembly servo pit recording and reducing manufacturing time while maintaining tracking accuracy.
2Reliability
If servo pits are recorded after recording media assembly, then tracking position error signals can be generated, but manufacturing cost increases due to additional process steps
Solution Approach 1:
The patent reduces manufacturing cost by performing the pattern formation action beforehand. The servo pattern and sync pattern are formed on the recording medium before assembly, eliminating the need for complex post-assembly servo pit recording processes and reducing the number of manufacturing steps while maintaining reliable tracking accuracy.
Solution Approach 2:
The patent segments the manufacturing process into distinct pattern formation steps that occur before assembly. The servo pattern formation and sync pattern formation are separated as independent preprocessing steps, allowing for optimized manufacturing workflows and reduced overall complexity compared to post-assembly servo pit recording.
3Measurement precision
If conventional servo pit methods are used after assembly, then tracking position error signals are generated, but errors are introduced during the recording process
Solution Approach 1:
The patent eliminates recording errors by forming patterns beforehand under controlled conditions. The servo pattern and sync pattern are formed on the recording medium before assembly, avoiding the introduction of errors that occur during post-assembly servo pit recording while maintaining high tracking position error signal precision.
Data Source
AI summary
Disclosed are a data storage apparatus, an assembling method thereof and an apparatus for generating a tracking position error signal capable of storing data using recording media formed with patterns for generating tracking position error signals to obviate errors that may be generated amidst storage of the data, wherein the patterns are formed for generating tracking position error signals on recording media before the recording media and storage are assembled to reduce the manufacturing cost and manufacturing process time.