Method for discriminating type of optical recording medium

Abstract

A method for discriminating a type of an optical recording medium including the steps of: checking a disk is mounted; performing a focus-searching by rotating a mounted disk by means of a recording/reproducing system for a specific disk to detect a focus search level, and identifying whether the currently mounted disk belongs to a specific type on the basis of the detected focus-search level; detecting an RF level and/or a focus error signal level by rotating the mounted disk, and identifying a type of the currently mounted disk on the basis of the detected signal. Also, a method for discriminating a type of an optical recording medium by detecting an RF signal and a focus error signal while performing a focus-searching as the optical recording medium is inserted, including: a first discriminating step for detecting a focus zero cross position from a focus error signal as inputted during focus-searching, and discriminating whether the optical recording medium belongs to a CD group or to a DVD group by using a level of a focus search wave form detected from the focus zero cross position; and a second discriminating step for discriminating whether the optical recording medium discriminated as the CD group disk or the DVD group disk in the above step is a reproducing-only recording medium or a recordable recording medium by using an RF signal level or a focus error signal level.

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