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公开(公告)号：US20220035536A1
公开(公告)日：2022-02-03
申请号：US16943898
申请日：2020-07-30
Applicant: Seagate Technology LLC
Inventor： Xiong LIU , WenXiang XIE , Jian QIANG
Abstract: The technology disclosed herein pertains to a method for determining expected command completion time (CCT), the method including receiving a plurality of position error signals (PESs) for an HDD over a predetermined time period, determining sigma of the plurality of PESs, retrieving upper off-track limits (UOL) for one or more data sectors of the HDD, calculating average number of retrieved sectors (A) between two consecutive occurrences of the |PES|>UOL for the HDD, and determining required number of revolutions (CCT) to collect data based on the average number of retrieved data sectors (A) and a total number of requested data sectors (N).
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公开(公告)号：US20210306165A1
公开(公告)日：2021-09-30
申请号：US16834867
申请日：2020-03-30
Applicant: Seagate Technology LLC
Inventor： Padmaja KANNAN , Xiong LIU , Jiangnan LIN , Wendy Pui Lai WONG
Abstract: The technology disclosed herein provides a system for generating a personal unclonable function (PUF) for a user based on a biometric data related to the user. Implementations of the system include a camera to generate a partial image of a user's tongue, a sensor to generate a moisture level in the user's saliva, a PUF generator configured to generate a PUF benchmark of the user based on combination of the partial image of a user's tongue and the moisture level in the user's saliva, and an access control unit configured to control access to one or more user devices based on the PUF benchmark.
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公开(公告)号：US20220197554A1
公开(公告)日：2022-06-23
申请号：US17130863
申请日：2020-12-22
Applicant: Seagate Technology LLC
Inventor： Xiong LIU , Wei ZHANG , Jin Quan SHEN , Feng SHEN
Abstract: The technology disclosed herein pertains to a system and method for storing data on a storage media using both down-track super parity and cross-track super parity. Specifically, a method disclosed herein provides for generating down-track super parity values for data on the plurality of tracks and storing the down-track super parity values on a down-track super parity row of the storage block and generating cross-track super parity values for data on the plurality of rows and storing the cross-track super parity values on a cross-track upper parity track, wherein the cross-track super parity value for any given row is generated by inputting the data on the given row into an exclusive-OR (XOR) gate.
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公开(公告)号：US20210067509A1
公开(公告)日：2021-03-04
申请号：US16559348
申请日：2019-09-03
Applicant: Seagate Technology LLC
Inventor： Jiangnan LIN , Xiong LIU , Wendy Pui Lai WONG , Padmaja KANNAN , Manuel OFFENBERG
Abstract: The technology disclosed herein provides a system for allowing users to login into one or more devices without a password. Implementations of the system include one or more biometric data collection devices (shoe, glasses, watch) and a device configured to store one or more user identification data, receive a request for user verification, request user's biometric data from one or more of the biometric data collection devices, generate a personal unclonable function (PUF) value based on combination of at least one of the user identification data and the user's biometric data, and verify the user's identity by comparing the PUF value to the user's PUF benchmark.
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公开(公告)号：US20200043526A1
公开(公告)日：2020-02-06
申请号：US16653732
申请日：2019-10-15
Applicant: Seagate Technology LLC
Inventor： Jian QIANG , Xiong LIU , WenXiang XIE
IPC: G11B20/18 , G11B5/012 , G11B20/12 , G06F12/0875 , G06F12/0888 , G06F12/0871 , G11B20/10
Abstract: The disclosed technology provides a method that improves CCT in SMR device systems. In one implementation, the method comprises writing data to a shingled magnetic recording (SMR) band in a storage device, determining whether an off-track write has occurred, identifying unsafe written data in response to determining that an off-track write has occurred, determining whether caching space is available upon identifying unsafe written data, continue writing data to the SMR band without a write retry upon determining that caching space is available, and writing unsafe written data to the available caching space. In another implementation, the method comprises receiving a request to repair an encroached track in an SMR band, recovering encroached data to a dynamic random-access memory, determining whether caching space is available, writing the recovered data to the available caching space upon determining that caching space is available, and merging other cached data in the SMR band.
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Patent Agency Ranking
公开(公告)号：US20180158483A1
公开(公告)日：2018-06-07
申请号：US15883934
申请日：2018-01-30
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Xiong LIU , MingZhong DING , ChuenBuan LEE
CPC classification number: G11B20/1816 , G11B5/39 , G11B5/455
Abstract: Systems and methods for determining an occurrence of non-operation shock (NOS) in a disc drive are described. Such determining may be used to determine whether or not the disc drive should be recalibrated or compensated to account for changes induced by NOS. Determining NOS may be based at least in part on a harmonic of the spindle of the disc drive other than the first harmonic, such as a third harmonic of the spindle. In some embodiments, determining NOS may be based on the first harmonic of the spindle and at least one other harmonic of the spindle.
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公开(公告)号：US20180033457A1
公开(公告)日：2018-02-01
申请号：US15727399
申请日：2017-10-06
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Mingzhong DING , Xiong LIU , Xiang LU , Qiang BI , Kian Keong OOI
IPC: G11B5/596
CPC classification number: G11B5/59627 , G11B5/59694
Abstract: Systems and methods for compensating for magnetoresistive (MR) jog offset direct current (DC) drift in a disc drive are described. In one embodiment, a method may include determining an occurrence of NOS, for example, by monitoring disc slip, to determine when the method should proceed. An MR jog offset DC drift amount is determined for each head of the disc drive. One of several approaches may be employed for determining the MR jog offset DC drift amount. By determining an MR jog offset DC drift amount for each head, a compensation profile is determined for the drive. The determined compensation profile may then be used during operation of the disc drive to compensate for the DC drift. One of several approaches may be employed for compensating based on the compensation profile.
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公开(公告)号：US20170352371A1
公开(公告)日：2017-12-07
申请号：US15341246
申请日：2016-11-02
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Mingzhong DING , Xiong LIU , Xiang LU , Qiang BI , Kian Keong OOI
IPC: G11B5/596
CPC classification number: G11B5/59627 , G11B5/59694
Abstract: Systems and methods for compensating for magnetoresistive (MR) jog offset direct current (DC) drift in a disc drive are described. In one embodiment, a method may include determining an occurrence of NOS, for example, by monitoring disc slip, to determine when the method should proceed. An MR jog offset DC drift amount is determined for each head of the disc drive. One of several approaches may be employed for determining the MR jog offset DC drift amount. By determining an MR jog offset DC drift amount for each head, a compensation profile is determined for the drive. The determined compensation profile may then be used during operation of the disc drive to compensate for the DC drift. One of several approaches may be employed for compensating based on the compensation profile.
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公开(公告)号：US20220366937A1
公开(公告)日：2022-11-17
申请号：US17684047
申请日：2022-03-01
Applicant: Seagate Technology LLC
IPC: G11B20/10
Abstract: The technology disclosed herein pertains to a system and method for managing off-track retry. An implementation of a method of determining offset direction for read off-track retry includes storing analog to digital converter (ADC) values of data read from a data sector by a data reader in a read channel buffer, calculating an indicator value of the distribution of the ADC values, determining an amount of offset for the data reader based on the indicator value, and moving the data reader by the amount of offset before performing a read retry operation.
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公开(公告)号：US20220291844A1
公开(公告)日：2022-09-15
申请号：US17828727
申请日：2022-05-31
Applicant: Seagate Technology LLC
Inventor： Xiong LIU , WenXiang XIE
Abstract: The technology disclosed herein pertains to a method for determining expected command completion time (CCT), the method including receiving a plurality of position error signals (PESs) for an HDD over a predetermined time period, determining sigma of the plurality of PESs, retrieving upper off-track limits (UOL) for one or more data sectors of the HDD, calculating average number of retrieved sectors (A) between two consecutive occurrences of the |PES|>UOL for the HDD, and determining required number of revolutions (CCT) to collect data based on the average number of retrieved data sectors (A) and a total number of requested data sectors (N).
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