MAGNETIC DISK APPARATUS AND METHOD

Organization Name

kabushiki kaisha toshiba

Inventor(s)

Sho Suzuki of Hachioji Tokyo JP

Naoki Tagami of Yokohama Kanagawa JP

Takeyori Hara of Kawasaki Kanagawa JP

Takayuki Kawabe of Sagamihara Kanagawa JP

MAGNETIC DISK APPARATUS AND METHOD

This abstract first appeared for US patent application 20250095680 titled 'MAGNETIC DISK APPARATUS AND METHOD

Original Abstract Submitted

according to the embodiment, a controller of a magnetic disk apparatus acquires a first amplitude and a first phase of a first read waveform and a second amplitude and a second phase of a second read waveform by demodulating the first/second read waveforms. the first read waveform is a read waveform of a first burst pattern. the second read waveform is a read waveform of a second burst pattern. the controller acquires weights on the basis of the first amplitude, the second amplitude, the first phase, and the second phase. the controller corrects an initial phase of each of the first read waveform and the second read waveform by calculating a weighted average using the weights, the first phase, and the second phase. the controller executes positioning of the magnetic head on the basis of the corrected first read waveform and second read waveform.