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公开(公告)号：AU630335B2
公开(公告)日：1992-10-29
申请号：AU2401188
申请日：1988-10-18
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparison with the current position of the head, to derive a tracking control signal.
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公开(公告)号：GB2211961B
公开(公告)日：1992-04-01
申请号：GB8824471
申请日：1988-10-19
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparison with the current position of the head, to derive a tracking control signal.
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公开(公告)号：FR2622728A1
公开(公告)日：1989-05-05
申请号：FR8814201
申请日：1988-10-28
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparison with the current position of the head, to derive a tracking control signal.
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公开(公告)号：AU766600B2
公开(公告)日：2003-10-16
申请号：AU5836199
申请日：1999-11-08
Applicant: SONY CORP
Inventor： TAKEDA TORU , KUMAI SATOSHI , MIKAMI TATSUO , UEHARA SYUJI , OKANISHI TOSHIHARU , OGAWA KENJI , NISHIDA NORIO , SATO SHOJI , ISHIKAWA HIDEKI , MUNEKATA KAZUMI , YANAMOTO KAORU , MINE NORICHIKA
IPC: G11B7/24 , G11B7/007 , G11B7/26 , G11B19/247 , G11B20/10 , G11B27/19 , G11B27/24 , G11B27/30 , G11B27/32 , G11B20/16
Abstract: Disclosed herein are a disc recording medium (1), a recording apparatus and a playback apparatus, more concretely, the present invention provides a disc recording medium (1) wherein a circular track is created in advance to be used for recording data as a groove (GV) or a land (L), said track is wobbled to contain approximately fixed number of wobbling periods as counted in a longitudinal direction of said track, and said track includes rotational-angle marks each showing a predetermined rotational angular position on said disc recording medium. As a result, the precision and the reliability of recording can be attained.
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Patent Agency Ranking
公开(公告)号：HK88495A
公开(公告)日：1995-06-09
申请号：HK88495
申请日：1995-06-01
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparison with the current position of the head, to derive a tracking control signal.
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公开(公告)号：CA1318396C
公开(公告)日：1993-05-25
申请号：CA580427
申请日：1988-10-18
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparision with the current position of the head, to derive a tracking control signal.
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公开(公告)号：AU625512B2
公开(公告)日：1992-07-16
申请号：AU2183888
申请日：1988-09-02
Applicant: SONY CORP
Inventor： YANAMOTO KAORU , OHTA TOSHIRO , HOTTA HIDEAKI , KADONAGA AKIRA
Abstract: An auto-ejector (16) incorporated in a disk recording and/or reproducing apparatus (4) is driven by a disk driving motor (7) and a head driving motor (10) which are requisite for the apparatus. That is, the ejector is triggered under the power of the head driving motor (10), and a disk cartridge (2) in which a disk (1) is accommodated is ejected under the power of the disk driving motor (7). Thus, any device, such as an electromagnetic device, a motor or the like used only for the ejector is not needed.
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公开(公告)号：DE3836629A1
公开(公告)日：1989-05-11
申请号：DE3836629
申请日：1988-10-27
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparison with the current position of the head, to derive a tracking control signal.
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公开(公告)号：AU2401188A
公开(公告)日：1989-05-04
申请号：AU2401188
申请日：1988-10-18
Applicant: SONY CORP
Inventor： TAGUCHI KEIICHI , YANAMOTO KAORU
Abstract: A tracking servo for a floppy disc drive or the like employs a plurality of servo tracks recorded between adjacent data tracks on the floppy discs, with the signals from adjacent servo tracks on both sides of a data track being used to define the difference between the position of the magnetic head and the center line of the data track being accessed, and an adder is used to add the current position of the head to the product of such difference multiplied by a constant, with the sum delayed by the period of one rotation for comparison with the current position of the head, to derive a tracking control signal.
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