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    1.
    发明专利
    未知

    公开(公告)号：DE2718203A1

    公开(公告)日：1977-11-24

    申请号：DE2718203

    申请日：1977-04-23

    Applicant: IBM

    Inventor： ARTER NELSON KAY ,  EICHHORN THOMAS FRANKLIN ,  JACKSON HOWARD CARL

    IPC: H04N5/7826 ,  G05D3/12 ,  G05D13/62 ,  G11B5/588 ,  G11B15/087 ,  G11B15/467 ,  G11B15/60 ,  G11B20/20 ,  G11B5/43 ,  H04N5/78

    Abstract: 1530099 Automatic control INTERNATIONAL BUSINESS MACHINES CORP 25 April 1977 [3 May 1976] 17185/77 Heading G3N A magnetic reader, particularly a reader having a rotating head for reading an oblique track on a stationary tape wound on a helical mandrel, is provided with an arrangement for moving the tape to compensate for a skewed track. The arrangement is initiated by failure after a succession of passes, to read the track and the tape is moved by an offset distance 116 during a non-transducing position of the head travel and returned by steps along a transducing path 35' to read the skewed data track. Facilities can be provided for calling-up one of a plurality of offset distances and a variable number of de-skewing pulses.

    4.
    发明专利
    未知

    公开(公告)号：CH595674A5

    公开(公告)日：1978-02-15

    申请号：CH1064176

    申请日：1976-08-20

    Applicant: IBM

    Inventor： ARTER NELSON KAY ,  JACKSON HOWARD CARL

    IPC: H04N5/7826 ,  G05D3/12 ,  G05D13/62 ,  G11B15/18 ,  G11B15/467 ,  H02P3/06 ,  G11B15/20

    Abstract: An incremental belt transport device with adaptive gain control and a rotating head magnetic tape unit, comprising: a take-up reel; a motor functionally connected to rotate said reel; a supply of tape; rotary means in cooperation with a stretch of tape running between said supply and said take-up reel, following a transverse or lateral path of travel across the width of said stretch of tape; said tape having a plurality of data tracks distributed at intervals and having servo-control rates for at least certain tracks; transducer means capable of operating by reading said servo-control indices in order to determine the lack of alignment of said rotary means with its data tracks; means for generating an advance order or tape step; means for detecting the excess of stroke and the defect or shortness of stroke of the engine; means for comparing the excess and defect of stroke with a predetermined threshold value; and means for adjusting the motor gain to minimize motor oscillation. (Machine-translation by Google Translate, not legally binding)

    ADAPTIVE GAIN CONTROL IN AN INCREMENTING MAGNETIC TAPE TRAN- SPORT
    6.
    发明专利
    ADAPTIVE GAIN CONTROL IN AN INCREMENTING MAGNETIC TAPE TRAN- SPORT 未知

    公开(公告)号：AU1719276A

    公开(公告)日：1978-03-02

    申请号：AU1719276

    申请日：1976-08-26

    Applicant: IBM

    Inventor： ARTER NELSON KAY ,  JACKSON HOWARD CARL

    IPC: H04N5/7826 ,  G05D3/12 ,  G05D13/62 ,  G11B15/18 ,  G11B15/467 ,  H02P3/06 ,  G11B15/20

    Abstract: An incremental belt transport device with adaptive gain control and a rotating head magnetic tape unit, comprising: a take-up reel; a motor functionally connected to rotate said reel; a supply of tape; rotary means in cooperation with a stretch of tape running between said supply and said take-up reel, following a transverse or lateral path of travel across the width of said stretch of tape; said tape having a plurality of data tracks distributed at intervals and having servo-control rates for at least certain tracks; transducer means capable of operating by reading said servo-control indices in order to determine the lack of alignment of said rotary means with its data tracks; means for generating an advance order or tape step; means for detecting the excess of stroke and the defect or shortness of stroke of the engine; means for comparing the excess and defect of stroke with a predetermined threshold value; and means for adjusting the motor gain to minimize motor oscillation. (Machine-translation by Google Translate, not legally binding)

    7.
    发明专利
    未知

    公开(公告)号：DE2638800A1

    公开(公告)日：1977-04-14

    申请号：DE2638800

    申请日：1976-08-27

    Applicant: IBM

    Inventor： ARTER NELSON KAY ,  JACKSON HOWARD CARL

    IPC: H04N5/7826 ,  G05D3/12 ,  G05D13/62 ,  G11B15/18 ,  G11B15/467 ,  H02P3/06 ,  G11B27/36 ,  G11B15/46

    Abstract: An incremental belt transport device with adaptive gain control and a rotating head magnetic tape unit, comprising: a take-up reel; a motor functionally connected to rotate said reel; a supply of tape; rotary means in cooperation with a stretch of tape running between said supply and said take-up reel, following a transverse or lateral path of travel across the width of said stretch of tape; said tape having a plurality of data tracks distributed at intervals and having servo-control rates for at least certain tracks; transducer means capable of operating by reading said servo-control indices in order to determine the lack of alignment of said rotary means with its data tracks; means for generating an advance order or tape step; means for detecting the excess of stroke and the defect or shortness of stroke of the engine; means for comparing the excess and defect of stroke with a predetermined threshold value; and means for adjusting the motor gain to minimize motor oscillation. (Machine-translation by Google Translate, not legally binding)

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