Patent ID: 8339915

Claim:
A method for obtaining focus optimization in an optical disc system, comprising: a) setting focus offset of a recording unit to a first of a plurality of predetermined values; b) measuring and storing a HF (high frequency) quality value for the selected focus offset value of the recording unit; c) setting focus offset to a best-known focus offset value; d) jumping tracks on the optical media being read to measure the HF quality value; e) setting the focus offset value to a next selected focus offset value of the plurality of predetermined focus offset values; f) repeating the above steps b) to e) for each of said plurality of predetermined focus offset values; and g) determining optimal focus setting from said stored HF quality measurements, wherein step e) sets the next selected focus offset value in a decreasing direction until the measured HF quality value reaches a predetermined value and then sets the next selected focus offset value in an increasing direction until the measured HF quality value reaches the predetermined value.