公开(公告)号：US20180137047A1

公开(公告)日：2018-05-17

申请号：US15693575

申请日：2017-09-01

Applicant: QUANTA STORAGE INC.

Inventor： An-Te LIU ,  Chun-Hung HUNG ,  Jin-Shing HSIEH

IPC: G06F12/02 ,  G06F3/06

CPC classification number: G06F12/0246 ,  G06F3/061 ,  G06F3/0655 ,  G06F3/0688 ,  G06F11/1441 ,  G06F2212/7201 ,  G06F2212/7203

Abstract: A backup method for the mapping table of a solid state disk is provided. When access of a user data and writing of backup data units are processed at the same time, by adjusting a data volume of each of the backup data units and a length of a time lag interval, the data volume of the backup data units to be processed is reduced. More capacity will be available for processing access of the user data. Thus, the access efficiency of the user data is maintained.

公开(公告)号：US20160042758A1

公开(公告)日：2016-02-11

申请号：US14675211

申请日：2015-03-31

Applicant: QUANTA STORAGE INC.

Inventor： An-Te LIU ,  Chuan-Tsung FENG

IPC: G11B7/09

CPC classification number: G11B7/0903 ,  G11B7/0941 ,  G11B7/0953 ,  G11B7/0956

Abstract: A method for determining phase difference of tracking error (TE) signal is disclosed. The method includes following steps. An optical disc drive is activated to generate a TE signal. Amplitudes of the master push pull (MPP) signal, the secondary push pull (SPP) signal and the TE signal are measured. The phase difference between the MPP signal and the SPP signal of the TE signal is quickly calculated according to the law of cosine.

Abstract translation: 公开了一种用于确定跟踪误差（TE）信号的相位差的方法。 该方法包括以下步骤。 激活光盘驱动器以产生TE信号。 测量主推挽（MPP）信号，二次推挽（SPP）信号和TE信号的幅度。 根据余弦定律快速计算出TE信号的MPP信号与SPP信号之间的相位差。