In an apparatus for reading recorded data, the apparatus, a read signal is sampled
from recorded data of a recording medium by synchronizing with a first clock signal.
A sample value obtained by the sampling part is stored and also the sample value
from the first storing part is retrieved by synchronizing a second clock signal
different from the first clock signal and maximum likelihood data is detected by
processing the sample value in accordance with a predetermined algorithm. The recorded
data is read based on the detected data.
