TILT ERROR DETECTING DEVICE, TILT CALIBRATING DEVICE, AND METHODS THEREOF FOR OPTICAL STORAGE DEVICE

摘要

The present invention discloses a tilt error detecting device for detecting a tilt error signal indicative of a tilt error between an optical disc and an optical pick-up head. The tilt error detecting device includes: a first combining module for generating a first level signal according to a first portion of a plurality of detecting signals which corresponds to a plurality of first detecting areas on a photo detector; a second combining module for generating a second level signal according to a second portion of the detecting signals which corresponds to a plurality of second detecting areas on the photo detector; and a calculating module coupled to the first combining module and the second combining module for generating the tilt error signal according to the first level signal and the second level signal.