Patent ID: 6570830
Filing Date: 2003-05-27
Classification: G11B

Abstract:
An optical disk signal processing apparatus, comprising:a light source; an optical system for receiving and leading a light beam generated by said light source; an objective lens for receiving the light beam from said optical system and for converging the light beam and applying said converged beam to a rotating disk; a signal detecting optical system for detecting a signal reflected by said rotating disk through said objective lens; a light detecting instrument for converting light output by said signal detecting optical system into an electrical signal; a data detecting circuit for detecting data encoded in said electrical signal; and a modulating circuit for producing a light-intensity modulating signal to modulate the intensity of said light beam generated by said light source in a playback operation according to signals recorded on said rotating disk, wherein said light-intensity modulating signal has a triangular waveform approximating a detected response waveform from said signals recorded on said rotating disk.