Patent ID: 7403466

Claim:
A data slice signal generation method for an optical disk drive, each of optical disks used in the optical disk drive including at least one header area and at least one data area, the method comprising the steps of: generating a radio frequency signal read by an optical pickup head of the optical disk drive, wherein the radio frequency signal comprises multiple waves; presetting data slice values in the beginnings of the header area and the data area, wherein the data slice values in the beginning of the header area and the data area respectively reflect the central levels of the multiple waves in the header area and the data area; generating a data slice signal based on the radio frequency signal, wherein an initial value of the data slice signal is assigned by the preset data slice value in the beginning of the header area when the optical pickup head enters the header area, and assigned by the preset data slice value in the beginning of the data area when the optical pickup head enters the data area; and adjusting the data slice signal to approach to the central levels of the multiple waves of the radio frequency signal.