Analysis of the effects of disk tilt on the differential-phase-detection signal in a high-density DVD read-only disk driver

Abstract

A high-density DVD (HD-DVD) is one of the high-density optical storage technology newly designed to meet the demands of high-definition video broadcasting that is very sensitive to the radial tilt of a disk. An analytic model based on diffraction theory is presented in detail to calculate the tracking error signal of a HD-DVD read-only disk driver by using the differential-phase-detection (DPD) method when radial tilt of a disk occurs. The effects of the tilt on a DPD signal in a HD-DVD read-only disk driver are quantified and compared to those in a DVD read-only disk driver. Experimental measurements for the DPD signal under different radial tilt angles in a HD-DVD read-only disk driver are also reported.

© 2006 Optical Society of America

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