Rubber Damper for Compact Disc Player

A Fundamental Introduction to the Compact Disc Player

Control Relevant Identi cation and Servo Design for a Compact Disc Player

The application of control relevant modeling of a radial servo loop in a CD (Compact Disc) player is presented in this chapter. The modeling is based on an identi cation algorithm that uses experimental data obtained from closedloop experiments to nd a low-order feedback relevant linear discrete time model for model-based servo control design. In this procedure a plant model is identi ed in ter...

Teaching optical fiber communications and optical data storage techniques using a compact disc player

The principles of optical fiber communication and optical data storage have evolved over the past decade into industry standards for transmission, distribution, storage, and archival of digital audio, multimedia, and computer data. The fundamentals of these sophisticated systems are traditionally taught in the lecture hall, and laboratory exposure to the hardware is at the device rather than th...

Modelling of the Optical Detector System in a Compact Disc Player Servo System

The cross-couplings between focus and radial tracking servos in compact disc players are important, but the optical cross couplings are not well described in the literature. In this paper an optical model of a compact disc player based on the three beam single foucault detector principle is found. The general principle of the three beam focus and radial detector system is first described, follo...

Compact design for a unitary photo detector and single-path combo optical pickup head for Blu-ray disc, digital versatile disc and compact disc systems

We present a compact design for a unitary photo detector and single-path combination optical pickup head (OPH) which can be used for Blu-ray Disc, digital versatile disc and compact disc systems. The number of components in the OPH design can be reduced by focusing three discrete wavelength laser beams on the photo detector. The three laser diode chips and a photo detector can be encapsulated w...