Cartridge Memory Error Correction for Magnetic Tape Data Integrity

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Solution Overview

Problem

As recording density increases in magnetic tapes, the amount of data exchanged between the cartridge memory and the drive also increases, leading to a desire for faster data transfer speeds, but this can compromise signal-noise ratio and data integrity, necessitating improved noise resistance.

Innovation Solution

A cartridge memory system that includes an antenna unit, a storage unit, and a control unit which adds an error correction code to data before transmission via the antenna unit, switching between normal-speed and high-speed communication modes to balance data transfer speed and integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If data transfer speed is increased, then productivity is improved, but noise resistance deteriorates

Engineering Contradiction:

Improvedata transfer speedVSAvoidnoise resistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by adding error correction codes to data before transmission. The control unit generates and attaches error correction codes to data packets prior to sending them through the antenna, enabling the receiving device to correct transmission errors without requiring retransmission. This preliminary protective measure allows high-speed data transfer while maintaining noise resistance through proactive error prevention rather than reactive correction.

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If data transfer speed is increased, then loss of time is reduced, but data integrity deteriorates

Engineering Contradiction:

Improvedata transfer timeVSAvoiddata integrity

Core Design Contradiction:

Loss of timeVSLoss of information

Solution Approach 1:

The control unit performs preliminary action by generating and attaching error correction codes to data before transmission. This allows the receiving device to automatically correct transmission errors without requiring retransmission, thus reducing data transfer time while maintaining data integrity through proactive error prevention.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The error correction code acts as an intermediary element between the transmitted data and potential transmission errors. By introducing this intermediate protective layer, the system enables high-speed data transfer while maintaining data integrity, as the error correction codes mediate between the data and noise interference during transmission.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 approach enhances noise resistance and maintains data integrity during high-speed data transfer, reducing waiting times during cartridge loading and unloading while ensuring reliable data handling.

Implementation Method 1

a non-contact type non-volatile memory using RF wireless communication, which is called a cartridge memory (CM), is built in the tape cartridge

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS11348615B2Cartridge memory for magnetic tape cartridge, control method therefor, cartridge, and recording/reproduction system

Publication Date: 2022.05.31 SONY GROUP CORP

AI summary

A cartridge memory is a cartridge memory used in a magnetic tape cartridge, including: an antenna unit; a storage unit that stores data; and a control unit that reads the data from the storage unit in response to a request from a recording/reproduction apparatus, adds an error correction code to the data, and transmits the obtained data via the antenna unit.