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公开(公告)号：US20240137131A1
公开(公告)日：2024-04-25
申请号：US18488029
申请日：2023-10-15
CPC分类号： H04B10/80 , G11B13/045 , G11B20/00007 , G11B20/10009 , H04B10/40 , H04B10/502 , H04B10/503 , H04N1/46
摘要： A frequency data transmission and encryption system comprises a transceiver module. The transceiver module is configured to receive and transmit computer-readable instructions via transmission signals comprising two distinct signals having a first frequency and a second frequency different than the first frequency. The transceiver module is further configured to convert the two distinct signals to and from a first set of computer-readable instructions based on the first frequency using a first conversion method, and a second set of computer-readable instructions based on the second frequency using a second conversion method different from the first conversion method.
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公开(公告)号：US20180336925A1
公开(公告)日：2018-11-22
申请号：US15938357
申请日：2018-03-28
CPC分类号： G11B19/041 , G11B20/10009 , G11B20/1217 , G11B20/18 , G11B2020/10898 , G11B2020/1869
摘要： Embodiments described herein provide an apparatus that is operable with a disk drive. The apparatus includes a memory device operable to store a plurality of bit sets. Each bit set identifies a track and a sector of the disk drive and a number of times that the track of the disk drive has been written. A controller of the disk drive is operable to increment the number when the track is written. Each bit set comprises a number of bits that is established according to track location of the disk drive.
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公开(公告)号：US10074398B2
公开(公告)日：2018-09-11
申请号：US15702033
申请日：2017-09-12
发明人： Kohsuke Harada , Akihiro Yamazaki , Nobuhiro Maeto
CPC分类号： G11B20/10037 , G11B5/012 , G11B20/10009 , G11B20/1403 , G11B20/1833 , G11B2220/2516
摘要： According to one embodiment, there is provided a storage device including a controller circuit and a storage medium. The controller circuit includes a first conversion circuit and a second conversion circuit. The first conversion circuit converts data into M-ary symbols where M is an integer of 3 or more. The second conversion circuit converts respective ones of the converted n samples of M-ary symbols into signals with L-patterned pulse width where n is an integer of 2 or more. The storage medium stores the converted n samples of signals with L-patterned pulse width. The controller circuit further includes an equalization circuit that equalizes signals read from the storage medium into the n samples of M-ary symbols.
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公开(公告)号：US20180197573A1
公开(公告)日：2018-07-12
申请号：US15702033
申请日：2017-09-12
发明人： Kohsuke HARADA , Akihiro YAMAZAKI , Nobuhiro MAETO
CPC分类号： G11B20/10037 , G11B5/012 , G11B20/10009 , G11B20/1403 , G11B20/1833 , G11B2220/2516
摘要： According to one embodiment, there is provided a storage device including a controller circuit and a storage medium. The controller circuit includes a first conversion circuit and a second conversion circuit. The first conversion circuit converts data into M-ary symbols where M is an integer of 3 or more. The second conversion circuit converts respective ones of the converted n samples of M-ary symbols into signals with L-patterned pulse width where n is an integer of 2 or more. The storage medium stores the converted n samples of signals with L-patterned pulse width. The controller circuit further includes an equalization circuit that equalizes signals read from the storage medium into the n samples of M-ary symbols.
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5.发明授权公开(公告)号：US10020020B2
公开(公告)日：2018-07-10
申请号：US15788173
申请日：2017-10-19
CPC分类号： G11B20/10009 , G11B5/02 , G11B5/1278 , G11B5/235 , G11B5/3153 , G11B5/40 , G11B5/465 , G11B2005/0024
摘要： A magnetic recording system for preventing data loss resulting magnetic oscillator current. The magnetic recording system includes a magnetic write head with a magnetic write pole, a magnetic oscillator near the magnetic write pole, and a write coil for magnetizing the write pole. Circuitry is connected with the magnetic write coil to supply a current to the write coil and connected with the magnetic oscillator to supply a current to the magnetic oscillator. The circuitry is configured to ensure that the current to the magnetic oscillator does not inadvertently magnetize the write pole after the magnetic write pole has demagnetized.
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公开(公告)号：US09997192B1
公开(公告)日：2018-06-12
申请号：US15599265
申请日：2017-05-18
CPC分类号： G11B19/041 , G11B20/10009 , G11B20/1217 , G11B20/18 , G11B2020/10898 , G11B2020/1869
摘要： Embodiments described herein provide an apparatus that is operable with a disk drive. The apparatus includes a memory device operable to store a plurality of bit sets. Each bit set identifies a track and a sector of the disk drive and a number of times that the track of the disk drive has been written. A controller of the disk drive is operable to increment the number when the track is written. Each bit set comprises a number of bits that is established according to track location of the disk drive.
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公开(公告)号：US09978401B1
公开(公告)日：2018-05-22
申请号：US15497473
申请日：2017-04-26
CPC分类号： G11B5/09 , G11B5/012 , G11B20/10009 , G11B20/10018
摘要： Systems and methods for a providing a chirped current profile with an undershoot for a channel preamplifier are described. A method for writing bits in a magnetic recording disc may include applying an overshoot to a write current which is supplied to a magnetic writer of the magnetic recording disc and applying an undershoot to the write current after the overshoot is applied to at least partially de-saturate the magnetic writer. The method may also include writing a bit to the magnetic recording disc with the magnetic writer using the supplied write current. In some examples, the application of a short negative pulse after an overshoot portion of the write current waveform is delivered to the head during a write operation that writes the bit to the magnetic recording disc.
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公开(公告)号：US09947355B2
公开(公告)日：2018-04-17
申请号：US15434375
申请日：2017-02-16
发明人： Tohru Hasegawa , Masayuki Iwanaga , Yutaka Oishi
IPC分类号： G11B19/02 , G11B5/588 , G11B5/012 , G11B5/09 , G11B20/10 , G11B5/584 , G11B5/008 , G11B27/13 , G11B5/55 , G11B5/48
CPC分类号： G11B5/588 , G11B5/00813 , G11B5/012 , G11B5/09 , G11B5/4893 , G11B5/5508 , G11B5/584 , G11B15/005 , G11B15/087 , G11B15/093 , G11B20/10009 , G11B20/1403 , G11B27/13 , G11B2020/1476 , G11B2020/148 , G11B2220/90
摘要： As disclosed herein a method for encoding information on tape using write offset gaps. The method includes receiving a request to write a dataset on a tape medium using a plurality of head groups, and identifying information to be encoded when writing the dataset. The method further includes determining a head group offset pattern that encodes the information, and writing the dataset using the head group offset pattern. Also disclosed herein is a method for decoding information on tape using write offset gaps. The method includes reading a dataset from a tape medium using a plurality of head groups, and determining a head group offset pattern used to read the dataset. The method further includes decoding information encoded in the head group offset pattern to provide decoded information. A computer program product corresponding to the above method is also disclosed herein.
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9.发明申请公开(公告)号：US20180061450A1
公开(公告)日：2018-03-01
申请号：US15788173
申请日：2017-10-19
CPC分类号： G11B20/10009 , G11B5/02 , G11B5/1278 , G11B5/235 , G11B5/3153 , G11B5/40 , G11B5/465 , G11B2005/0024
摘要： A magnetic recording system for preventing data loss resulting magnetic oscillator current. The magnetic recording system includes a magnetic write head with a magnetic write pole, a magnetic oscillator near the magnetic write pole, and a write coil for magnetizing the write pole. Circuitry is connected with the magnetic write coil to supply a current to the write coil and connected with the magnetic oscillator to supply a current to the magnetic oscillator. The circuitry is configured to ensure that the current to the magnetic oscillator does not inadvertently magnetize the write pole after the magnetic write pole has demagnetized.
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公开(公告)号：US09892754B2
公开(公告)日：2018-02-13
申请号：US15531984
申请日：2015-12-09
申请人： SONY CORPORATION
发明人： Satoru Higashino
CPC分类号： G11B20/10055 , G11B20/10009 , G11B20/10046 , G11B20/10277 , G11B20/10287
摘要： Data detection capability is improved by whitening crosstalk noise from an equalization signal and detecting binary data. Each of a plurality of detection signals is input to one of a plurality of adaptive equalizers, and outputs of the plurality of adaptive equalizers are computed to obtain an equalization signal for returning light at the time of shining of light onto bounds including a target track subject to data detection and adjacent tracks of an optical recording medium having a plurality of tracks formed thereon. Crosstalk noise from the adjacent tracks included in the equalization signal obtained by this multi-input adaptive equalization process is whitened first, followed by a binarization process. Also, an equalization error is found, and supplied as a control signal for adaptive equalization. Further, a whitening factor updating process is also performed to adaptively update a filter factor of a whitening filter.
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