Patent ID: 11900964
Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. The disk device according to claim 8, wherein
the preamplifier includes:
a first circuit that generates the write current according to the first signal; and
a second circuit that controls the first circuit to start the current zero control from an edge timing of the second signal when a combination of a level of the first signal and a state transition of the second signal is a first combination, and controls the first circuit not to perform the current zero control when a combination of a level of the first signal and a state transition of the second signal is a second combination, and
the first circuit cancels the current zero control at a polarity inversion timing of the first signal in a case where the current zero control is performed.