In a medium recording playback apparatus, a write linking position judging
unit judges whether a servo frame for reading/writing data is in a servo
write linking position. If the servo frame is not in the servo write
linking position, a data reading/writing unit reads/writes data using a
medium synchronous write function. The medium synchronous write function
corrects a frequency of a clock used to play back a timing of
reading/writing the data, based on a distance between servo synchronous
marks.