Magnetic Tape Cartridge Servo Band Interval Recording
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Solution Overview
Problem
Existing magnetic tape technologies face challenges in achieving high accuracy for magnetic head positioning due to individual differences in servo recording elements during the manufacturing process, which are not adequately addressed by existing technologies.
Innovation Solution
A magnetic tape cartridge with servo band interval relevant information recorded on a recording medium, including the interval of adjacent servo recording elements and tension information, to accurately position the magnetic head by detecting and controlling the interval and tension for precise data track following.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If high-density magnetic tape configuration is implemented with narrower data tracks, then storage capacity increases, but magnetic head positioning accuracy deteriorates
Solution Approach 1:
The patent applies preliminary action by recording servo patterns with precise interval information before data recording. The servo recording elements record servo patterns at predetermined intervals, and this interval information is stored and used later to accurately position the magnetic head on narrow data tracks during data recording operations
Solution Approach 2:
The patent implements feedback by detecting the actual interval between servo bands during data recording and comparing it with the predetermined interval information. Based on this comparison, the magnetic head position is adjusted to maintain accurate positioning despite variations in servo recording element intervals
2Device complexity
If individual differences in servo recording elements are not compensated, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent introduces an intermediary mechanism by recording and storing interval information from servo patterns on the magnetic tape. This stored interval information serves as a mediator between the physical servo bands and the data tracks, enabling accurate positioning without requiring complex real-time measurement and adjustment systems
Solution Approach 2:
The patent applies copying by creating a record of the servo band interval information and using this copied data to control magnetic head positioning. Instead of directly measuring physical distances during operation, the system uses the copied interval information stored from preliminary servo recording to guide positioning operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables precise positioning of the magnetic head with improved accuracy, even in high-density magnetic tape configurations, by incorporating servo band interval relevant information and tension control, ensuring reliable data recording and reproduction.
Implementation Method 1
a magnetic head including a servo reproducing element that reproduces a servo pattern recorded on a servo band
Data Source
AI summary
A magnetic tape cartridge includes: a magnetic tape including plural servo bands on which servo patterns are recorded, and a data band that is provided between the servo bands and on which data is recorded; and a recording medium on which servo band interval relevant information is recorded, the servo band interval relevant information including an interval of adjacent servo recording elements of plural servo recording elements in a direction corresponding to a width direction of the magnetic tape, each of the plural servo recording elements records the servo pattern on each of the plural servo bands.