• 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 an apparatus for automatically maintaining a transducing head assembly on the proper track, which is particularly adapted for a helical scan recording and/or reproducing apparatus capable of providing special motion effects, track selection method and apparatus is disclosed. The apparatus is of the type which utilizes transverse positioning of the transducing head to accurately follow a track during reproducing and, at the completion of the reproduction from the track, to properly position the head in position to either reproduce the next adjacent successive track, reproduce the same track or reproduce another track so that the appropriate special motion effect is achieved. During the acceleration of the tape to normal speed, the tape transport is initially controlled relative to a recorded control track to position the head relative to the recorded tracks so that the reproduced video signal is color framed with respect to studio reference. Verification of color framing is performed after reaching normal speed by detecting the H sync to V sync phase relationship of the reproduced video signal and deflecting the movable head 1 track position along the tape to obtain proper color frame conditions if initial color framing was incorrect.
    公开号:SU1076000A3
    申请号:SU792744200
    申请日:1979-03-22
    公开日:1984-02-23
    发明作者:Ф.Равизза Рэймонд
    申请人:Ампекс Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the field of information accumulation, namely to. devices for controlling the position of the magnetic head on oblique recording lines. A device for controlling the position of a magnetic head, on oblique recording lines, is known, which contains an input tacho signal bus connected to the input of a position control signal generator. The device provides control of the position of the magnetic head on the oblique recording lines with relative simply those of its construction fij. A disadvantage of the known devices is the considerable complexity of its maintenance. It is also known a device for controlling the position of a magnetic head on oblique recording lines with a tacho signal input bus connected to the input of the clock generator, elements AND, NB-I elements, amplifier, integrator, control input bus, input bus the mismatch signal field, the input voltage reference buses and the output bus. The device is characterized by relative ease of maintenance 2. The disadvantage of this device is a significant position control error (magnetic head on oblique recording lines. Due to changes in the speed of movement of the magnetic tape in different playback modes. The purpose of the invention is to reduce: Position control errors: magnetic head on oblique recording lines. The goal is achieved the fact that in the device FOR the control of the position of the magnetic head on the oblique lines of the recording, containing the input bus tacho signal connected to the input of the imager clock pulses, AND elements, NOT-AND elements, amplifier, integrator, control signal input bus, field mismatch input bus, reference voltage input bus, and output bus, the first and second triggers are entered, the Q-outputs of which are connected to the first inputs, respectively the first and second or second elements, the third trigger, the d output of which to the first input of the third element If, and the first, second, third and fourth level detectors, the first inputs of which are connected respectively to the first, second, third and fourth inputs of the op bus The second inputs are connected to the output of the integrator, connected to the output bus, the integrator is connected to the outputs of the first input element And connected to the second input of the clock generator, and second and third elements connected to the second inputs the second output of the clock pulses, the outputs of the first, second and third level detectors are connected to the D inputs of the first, second and third triggers, respectively. The C inputs of which are connected to the input bus of the tacho signal, the input bus of the mismatch signal is connected to the first inputs of the first and second NE-I elements, the outputs of which are connected to the 5 inputs of the first and third triggers respectively, the input bus of the control signal is connected to the 5 input of the second trigger, and the output of the fourth level detector is connected to the second input of the first element NOT-AND and to the input of the amplifier, the output of which is connected to the second input of the second element NOT-AND. The proposed device, by introducing the first, second, and third triggers and the first, second, third, and fourth level detectors in it, makes it possible to significantly reduce the error in controlling the position of the magnetic head on the inclined recording lines. The drawing shows one of the possible variants of the proposed device for controlling the position of a magnetic head on oblique recording lines. The proposed device contains an input bus 1 tachosignal connected to the input of the driver 2 clock pulses, the first, second and third triggers 3-5 and the first, second, third and fourth detectors 6-9 levels. The C-inputs of the first, second, and third flip-flops 3-5 are connected to the input bus 1 of the tajscgna, and the first inputs of the first, second, third and fourth detectors 6–9 of the level are respectively to the first, second, third, and fourth input buses 10–13 of the reference stress Q outputs of the first and second triggers 3 and 4 are connected to the first inputs of the first and second elements 14 and 15, respectively, and the Q output of the third trigger 5 to the first input of the third element 16 of the 16. The second inputs of the first, second, third and fourth detectors 6-9 levels are connected to the output of the integrator 17 connected to the output bus 18. The integrator 17 is connected to the outputs of the first element AND 14 connected to the second input. With the first output of the driver 2 clock pulses, and the second and third elements 15 and 16. When
    权利要求:
    Claims (1)
    [1]
    DEVICE FOR MANAGING THE POSITION OF A MAGNETIC HEAD ON INCLINED RECORDING LINE, containing the input tacho signal bus connected to the input of the pulse shaper, the elements AND, the elements NAND, the amplifier, the integrator, the input bus of the control signal, the input bus signal of the voltage field mismatch, the input bus and an output bus, characterized in that, in order to reduce the control error, the first and second triggers are introduced into the negro, the Q-outputs of which are connected to the first inputs, respectively, of the first and second elements And, the third trigger, Q-output of which is connected to the first input of the third element And, and the first, second, third and fourth level detectors, the first inputs of which are connected respectively to the first, second, third and fourth input voltage reference buses, and the second inputs - to the output of the integrator connected to the output bus, and the integrator is connected to the outputs of the first element. And, connected by the second input to the first output of the pulse shaper, and the second.
    and the third AND elements connected by the second inputs to the second output of the pulse shaper, the outputs of the first, second, and third level detectors are connected to the D inputs of the first, second, and third triggers, respectively, the C inputs of which are connected to the tacho input bus', the signal input bus the field mismatch is connected to the first inputs of the first and second NAND elements, the outputs of which are connected to the 5 inputs of the first and third triggers, the control signal input bus is connected to the 5 input of the second trigger pa, and a fourth level detector output is connected to the second input of the first NAND element and to the input of an amplifier whose output is coupled to a second input of the second NAND element.
    类似技术:
    公开号 | 公开日 | 专利标题
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    SU418888A1|1974-03-05|
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    同族专利:
    公开号 | 公开日
    CA1147457A|1983-05-31|
    FR2420806A1|1979-10-19|
    GB2017347A|1979-10-03|
    DE2911095A1|1979-09-27|
    BE875022A|1979-07-16|
    IT7948425D0|1979-03-21|
    NL7902272A|1979-09-25|
    US4215362A|1980-07-29|
    AT385164B|1988-02-25|
    FR2420806B1|1985-11-29|
    ATA217079A|1987-07-15|
    JPS54163616A|1979-12-26|
    IT1114476B|1986-01-27|
    HK23887A|1987-03-27|
    DE2911095C2|1987-01-22|
    GB2017347B|1982-08-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1300402A|1969-03-21|1972-12-20|Rca Corp|System for record medium control and editing|
    US3735015A|1971-08-19|1973-05-22|Columbia Broadcasting Syst Inc|Color frame lock control for signal reproducing systems|
    JPS5650329B2|1972-05-22|1981-11-28|
    US3839731A|1972-12-01|1974-10-01|Ibm|Apparatus for sensing relative position behind head and track in transverse magnetic recording without a separate control track|
    DE2316803C2|1973-04-04|1975-05-22|Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig, 8510 Fuerth|Arrangement for automatic track search for helical track recordings|
    US3890638A|1973-08-22|1975-06-17|Cmx Systems|Color phase matching system for magnetic video tape recordings|
    JPS5749394B2|1974-07-12|1982-10-21|
    NL7409513A|1974-07-15|1976-01-19|Philips Nv|Servo system for controlling position of magnetic reading head - has selection signals written into data tracks with simultaneous reading of adjacent tracks|
    JPS598891B2|1974-11-26|1984-02-28|Sony Corp|
    JPS5243362A|1975-10-01|1977-04-05|Fujitsu Ltd|Liquid growth method|
    DE2549579C3|1975-11-05|1978-06-29|Loewe Opta Gmbh, 1000 Berlin|Circuit for automatic tracking of a magnetic tape in a magnetic tape image recorder|
    GB1579854A|1976-03-19|1980-11-26|Ampex|Method and apparatus for producing time base altered effects in data recording and reproducing apparatus|
    US4093885A|1976-03-19|1978-06-06|Ampex Corporation|Transducer assembly vibration sensor|
    US4151570A|1976-03-22|1979-04-24|Ampex Corporation|Automatic scan tracking using a magnetic head supported by a piezoelectric bender element|
    JPS6118252B2|1976-08-24|1986-05-12|Sony Corp|
    JPS5333109A|1976-09-09|1978-03-28|Sony Corp|Recorder-reproducer for picture signals|
    US4099211A|1976-09-13|1978-07-04|Ampex Corporation|Positionable transducing mounting structure and driving system therefor|
    JPS6032258B2|1976-09-13|1985-07-26|Sony Corp|US4494153A|1978-03-23|1985-01-15|Ampex Corporation|Method of operating a signal reproduction apparatus for effecting synchronous reproduction of recorded signals|
    JPS639434B2|1979-05-31|1988-02-29|Sony Corp|
    JPS634387B2|1980-02-16|1988-01-28|Sony Corp|
    JPS6349954B2|1980-08-06|1988-10-06|Sony Corp|
    JPS6349956B2|1980-11-07|1988-10-06|Sony Corp|
    US4481544A|1981-09-18|1984-11-06|Ampex Corporation|Automatic tracking system with apparatus to prevent mistracking by a limited range transducer during stop motion|
    US4550351A|1982-03-31|1985-10-29|Rca Corporation|Adaptive automatic scan tracking system|
    US4679098A|1982-09-17|1987-07-07|Ampex Corporation|Video tape transport servo for variable tape speed control|
    WO1984001252A1|1982-09-17|1984-03-29|Ampex|A vtr servo system having high speed control track lock capability|
    JPS6077584A|1983-09-16|1985-05-02|Ampex|Servo system for rotary head tape feeder having high speed servo locking capacity|
    JPH0650911B2|1984-10-26|1994-06-29|ソニー株式会社|Playback video signal processor|
    US4768102A|1986-10-28|1988-08-30|Ampex Corporation|Method and apparatus for synchronizing a controller to a VTR for editing purposes|
    AT161117T|1992-04-10|1997-12-15|Ampex Systems Corp|A DATA RECORDING METHOD USING DATA RECOVERY STILL TECHNIQUES|
    US5390053A|1993-07-22|1995-02-14|Eastman Kodak Company|Circuit for controlling the overall upper cutoff frequency of an amplifier stage|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/889,461|US4215362A|1978-03-23|1978-03-23|Track selection method and apparatus|
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