Patent ID: 7684286
Filing Date: 2010-03-23
Classification: G11B

Abstract:
1. A track-jump control device of a PUH, said PUH generating a light spot on a optical disc, said optical disc comprising a plurality of L/G tracks, and each land and groove comprising a plurality of sectors and being connected in an L/G switch point, each sector comprising a header to indicate the location information of the sector, said track-jump control device determining track-jump timing of the PUH to jump from a current position in a current sector of a current land/groove (L/G) track to a destination position in a destination sector of a destination L/G track, comprising: an L/G position indicator for calculating an amount of sectors between the current position and an upcoming L/G switch point to generate a distance value; a header alignment controller for controlling the destination position locating in a safe area between two headers, and then generating a jump enabling signal; and a jump controller coupled to the L/G position indicator and the header alignment controller for determining track-jump timing according to the distance value and the jump enabling signal.