A calibration of input signal offsets for stray light in an optical disk drive
is presented. The input signal offsets can be determined by setting a laser power
level, receiving digitized input signals, and setting the input signal offsets
so that the digitized input signals are zero. The laser power level can be a read
power or a write power. In some embodiments, input signal offsets for both read
power and write power are determined and stored.
