• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a rotating head magnetic tape transport, the tape is maintained stationary as the head sweeps a selected data track. A length of tape is buffered in a vacuum column between a supply spool and the rotating head station. A take-up spool on the opposite side of the head station is servo controlled to maintain proper head/track alignment and to periodically step the tape to an adjacent track. Changes in the tape radius on the take-up spool are compensated for by (1) a stop-lock source of motor energization whose magnitude is servo controlled by unbalance between the vacuum column force tending to pull the tape in one direction and the take-up spool motor torque tending to pull the tape in the opposite direction, and (2) a step modification network which responds to head/track alignment error caused by the variable tape radius on the take-up spool.
    公开号:SU884589A3
    申请号:SU742057548
    申请日:1974-08-23
    公开日:1981-11-23
    发明作者:Карл Джонсон Говард
    申请人:Интернешнл Бизнес Машинз Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to magnetic j recording, and in particular to devices for controlling the stepping movement of a magnetic tape.
    A device for controlling g stepwise movement of a magnetic tape containing a discontinuous movement element mounted with the possibility of exposure to magnetic tape].
    This device allows one to provide a relatively high accuracy in controlling the stepwise movement of the magnetic tape, however, its disadvantage is the difficulty in ensuring a high stepwise speed of the magnetic tape; g.
    It is also known a device for controlling the stepping movement of a magnetic tape, comprising a receiving coil kinematically connected to an electric motor 20 connected to the output of the servo driver of the control signal and connected to the driver of the displacement signal in the feedback circuit, aligning the error detector 25
    The position of the magnetic head on the recording line, the first and second adders and the input bus commands for step movement [2] ·
    The known device allows for a relatively high speed of stepwise movement of the magnetic tape, however, its disadvantage is the significant error in the control of the stepwise movement of the magnetic tape.
    The purpose of the invention is to reduce the error in the control of the stepwise movement of the magnetic tape.
    This goal is achieved by the fact that a shaper of a step correction signal, a movement, connected to the output of the alignment error detector of the position of the magnetic head on the recording line, and a storage unit connected to the output of the first sum ora and to. the input bus for stepping commands, and the output of the second adder is connected to the input of the servo driver of the control signal, and the inputs of the first and second adders are connected to the output of the driver of the displacement signal in the feedback circuit and are connected to the output of the storage unit connected to the output of the step correction generator displacement.
    In FIG. I shows one of the possible variants of the proposed device for controlling the stepwise movement of the magnetic tape; in FIG. 2 - direction of stepwise movement of the magnetic tape relative to the magnetic head.
    The proposed device contains a receiving coil 1, kinematically connected to a DC motor 2 connected to the output of the servo driver of the control signal 3 and connected to the driver of the displacement signal in the feedback feedback circuit 4. The receiver coil 1 has the ability to wind the magnetic tape 5, rewound from the feed coil 6 in the process of its stepwise movement along a helix relative to the guide drum 7. In the guide drum 7 is a magnetic head 8, mounted on the disk 9, soy-, dynein with the possibility of rotation with the shaft of the driving electric motor 10.
    The proposed device also contains guide elements 11, providing direction of the magnetic tape 5, and another DC motor 12, kinematically connected to the supply coil 6. The electric motor I2 is connected to a tracking element 13 mounted to determine the position of the loop 14 of the magnetic tape 5 in a vacuum well fifteen.
    In addition, the proposed device contains a leveling error detector position 16 of the magnetic head 8 on the recording line, the output of which is connected to the shaper of the correction signal of the step of movement 17. The output of the latter is connected to the storage unit 18, connected to the input bus commands for step movement 19, and with the output the first adder 20. The output of the storage unit 18 is connected to the inputs of the first and second adders 20 and 21, the other inputs of which are connected to the output of the shaper of the displacement signal in the feedback circuit 4. Output of the adder 21 is connected to the inputs of the tracking driver of the control signal 3 and the driver 4 of the stop signal 22. Another input of the driver of the stop signal 22 is connected to the output of the first adder 20, and the output to the motor 2. 5 Thus, in the proposed device, the stepwise movement of the magnetic tape 5 carried out by winding it on the receiving coil I, which each time is rotated by an angle corresponding to the step of moving the magnetic tape 5, regardless of the diameter of the winding. A similar rotation of the receiving coil 1 is provided due to the signals generated by the first and second adders 20 and 21 and fed to the servo driver of the control signal 3 and the driver of the stop signal 22, which control the rotation. electric motor 2.
    The use of the invention can significantly reduce the error in the control of the stepwise movement of the magnetic tape. The invention may find application in apparatus for lowercase magnetic recording of television signals.
    权利要求:
    Claims (2)
    [1]
    3 control signal slots, with the inputs of the first and second adders connected to the output of the displacement signal generator in the reversal circuit and connected to the output of the memory unit connected to the output of the displacement correction phase generator. FIG. 1 shows one of the possible variants of the proposed device. to control the pitch movement of the magnetic tape; in fig. L is the direction of the stepping movement of the magnetic tape relative to the magnetic head. The proposed device contains a receive coil I, kinematically connected with a direct current electric motor 2 connected to the output of the next driver of the control signal 3 and connected with a moving signal former in the feedback circuit 4. The receiving coil 1 has the capability of winding magnetic tape 5, unwound from the supply coil 6 during its stepping movement along a helical line relative to the guide drum 7. In the guide drum 7 there is a magnetic head 8 fixed on the disk 9, The motor of the drive motor 10 is also rotatably coupled. The proposed device also supports elements 1 for guiding the magnetic tape 5 and another DC motor 12 kinematically coupled to the supply coil 6. The electric motor 12 is connected to the following element 13, mounted with the ability to determine the position of the loop 14 of the magnetic tape 5 in the vacuum well 15. In addition, the proposed device contains an equalized detector of the position error 16 of the magnetic heads and 8 on the record line, the output of which is connected to the driver for the correction step of displacement 17, the output of the latter is connected to the memory unit 18 connected to the command input bus for the step movement 19, and to the output of the first adder 20. The output of the memory unit 18 is connected to the inputs of the first and the second adders 20 and 21, the other inputs of which are connected to the output of the displacement signal generator in the feedback circuit 4. The output of the second adder 21 is connected to the inputs of the follower control signal generator 3 and the formaterizer a stop signal 22. The other input of the stop signal generator 22 is connected to the output of the first adder 20, and the output to the electric motor 2. Thus, in the proposed device, the stepping movement of the magnetic tape 5 is carried out by winding it onto the receiving coil I, which is turned each time at an angle corresponding to the step of movement of the magnetic tape 5, regardless of the diameter of the winding. Such a rotation of the receiving coil 1 is provided by signals generated by the first and second adders 20 and 21 and acted on the next driver of the control signal 3 and the driver of the stop signal 22, controlled by the rotation of the electric motor
    [2]
    2. The use of the invention makes it possible to significantly reduce the error in controlling the stepping movement of a magnetic tape. The invention can find application in the equipment for the lower magnetic recording of television signals. The invention The device dp stepping movement of the magnetic tape containing the receiving coil, kinematically connected with an electric motor connected to the output of the follower of the control sigal and connected with the shaper of the displacement in the feedback circuit, aligning the error detector position of the magnetic head on the line records, first and second adders and input command bus and step motion, characterized in that, with, the aim of reducing the step motion control error of the magnetic tape, a step-correction correction signal is inserted into it, connected to the output of the magnetic head position error detector's alignment on the recording line, and a memory unit connected to the output of the First adder on the input command bus for step motion and the output of the second adder is connected to the input Next, the former of the control signal of the poor signal, moreover, the inputs of the first AND second of the totalizer are connected to the output of the CISNAP generator, they are interchanged in the feedback circuit, and are connected by the output of the terminal block Minani, CONNECTION
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE2431414B2|1976-01-15|
    FR2241843B1|1976-10-22|
    JPS5046307A|1975-04-25|
    JPS5644493B2|1981-10-20|
    SE7410387L|1975-02-25|
    DE2431414A1|1975-03-20|
    NL178823C|1986-05-16|
    DD114711A5|1975-08-12|
    CA1044802A|1978-12-19|
    BR7407022D0|1975-06-24|
    US3864739A|1975-02-04|
    SE400135B|1978-03-13|
    BE818909A|1974-12-16|
    NL7410645A|1975-02-26|
    FR2241843A1|1975-03-21|
    ES429153A1|1976-11-16|
    CH588142A5|1977-05-31|
    IT1015213B|1977-05-10|
    GB1425445A|1976-02-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL234582A|1957-12-30|US3947875A|1974-08-06|1976-03-30|International Business Machines Corporation|Magnetic recorder test article and methods|
    US3987490A|1975-03-03|1976-10-19|International Business Machines Corporation|Rotating read/write system for NRZI data|
    US4032982A|1975-08-29|1977-06-28|International Business Machines Corporation|Adaptive voltage control of motor in an incrementing magnetic tape transport|
    US4050090A|1975-09-16|1977-09-20|International Business Machines Corporation|Helical scan magnetic recording device having a folded mounting plate|
    JPS5286303A|1976-01-13|1977-07-18|Nippon Telegr & Teleph Corp <Ntt>|Recording and reproducing system for magnetic tape|
    JPS6321262B2|1979-08-04|1988-05-06|Fujitsu Kk|
    JPS644395B2|1981-02-24|1989-01-25|Sony Corp|
    JPS56167037U|1981-04-30|1981-12-10|
    JPS6215691Y2|1982-01-27|1987-04-21|
    JPS58116911U|1982-02-03|1983-08-10|
    JPH0777053B2|1985-03-07|1995-08-16|三菱電機株式会社|Magnetic tape unit|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US39140573|US3864739A|1973-08-24|1973-08-24|Tape motion control in an incrementing magnetic tape transport|
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