Focus Error Detection In Optical Data Storage Systems

1980 ◽  
Author(s):  
Richard V. Johnson
Keyword(s):  
Data Storage ◽  
Error Detection ◽  
Storage Systems ◽  
Optical Data Storage ◽  
Optical Data

Rigorous numerical modeling of novel optical data storage systems

1997 ◽  
Author(s):  
Joshua L. Kann ◽  
Tomas D. Milster ◽  
Fred F. Froehlich ◽  
Richard W. Ziolkowski ◽  
Justin B. Judkins
Keyword(s):  
Numerical Modeling ◽  
Data Storage ◽  
Storage Systems ◽  
Optical Data Storage ◽  
Optical Data

Adaptive Regulation of Tracking Servo for Next Generation Optical Data Storage Systems

2012 ◽  
Vol 236-237 ◽  
pp. 497-502
Author(s):  
Fei Peng ◽  
Zhi Zheng Wu ◽  
Lu Wang
Keyword(s):  
Data Storage ◽  
Data Transfer ◽  
Storage Systems ◽  
Near Field ◽  
Tracking Error ◽  
Optical Data Storage ◽  
Optical Data ◽  
Next Generation ◽  
Adaptive Regulation ◽  
Control Approach

The tracking servo control has played an important role in the data storage servo systems. In the next generation optical data storage systems, i.e. the near-field recording system, the tracking error of the servo system should be below 10 nanometers under various unknown situations. However, higher data transfer rate and higher data density make it difficult to maintain the desired tracking precision during normal disk operation. It is proposed in this paper to use an adaptive regulation approach to maintain the tracking error below its desired value, despite unknown track eccentricity and external force disturbance. The performance of the proposed control approach is analyzed and simulation results are presented to illustrate the capability of the proposed adaptive regulator to achieve and maintain the desired tracking precision.

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