28 February 1997 Protection against jamming in a servo system of optical recorders
Author Affiliations +
Anti-jamming processing of optoelectronic detector signals, ensures control system invariance to change of laser power, dispersion of reflection from layer and presence of information pits. Logarithm amplification of photodetector currents stabilizes steepness of their characteristics at change of laser power (more than 10 times) and factor of reflection from surface (3 times). Besides, sections of tracing signal are chosen, which are located in intervals between information pits and free from recording. This measures increased focusing and tracking accuracy 2 - 3 times.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Igor P. Ryabokon, Igor P. Ryabokon, Viktor A. Ataev, Viktor A. Ataev, Oleg Y. Morozovsky, Oleg Y. Morozovsky, } "Protection against jamming in a servo system of optical recorders", Proc. SPIE 3055, International Conference on Optical Storage, Imaging, and Transmission of Information, (28 February 1997); doi: 10.1117/12.267719; https://doi.org/10.1117/12.267719


Sensors and controls for intelligent machining
Proceedings of SPIE (November 23 1999)
In Process Beam Monitoring
Proceedings of SPIE (November 11 1986)

Back to Top