Patent ID: 7110334
Filing Date: 2006-09-19
Classification: G11B

Abstract:
1. An apparatus to detect a servo error of a recording and/or reproducing apparatus for recording the data on and/or reproducing data from a disk having a data area divided into sectors, each sector has a header comprising an address, each header has a first header and a second header which are recorded to deviate from a center of the track in opposite directions, and the first header and the second header have address areas having address signals of the sectors and synchronous signal areas having synchronous signals for detecting the address signals recorded in the address areas, the apparatus comprising: a detector to detect a first magnitude of the synchronous clock signal detected from the first header as Ivfo a signal processor to generate a sum signal RF_sum; and a controller to control an orientation of the disk relative to the recording and/or reproducing apparatus such that a ratio of the first magnitude Ivfo