• 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 reproducing video or other information signals recorded in successive parallel tracks extending obliquely on a magnetic tape or other record medium which is adapted to be longitudinally advanced, a magnetic head or transducer is movable in the direction generally along the tracks for reproducing the signals recorded therein and is mounted or supported by a bi-morph leaf or other transducer deflecting device which is operative, in response to the reception of an electrical drive signal, for deflecting the transducer or head in a direction transverse to the direction along the tracks so as to follow a desired one of the tracks in moving from one end to the other end of such desired track, a first signal is produced in correspondence to the deflection of the transducer deflecting device needed to cause the transducer to follow the desired track at a predetermined position therealong, and a second signal is produced in correspondence to the following value: <IMAGE> in which n is the ratio of the tape speed during reproducing to the tape speed during recording, d is percentage of the distance along each of the tracks from said one end thereof to said predetermined position therealong, and m is an integer that is no greater than n and no less than n-1. A control signal is produced on the basis of the relation between the foregoing first and second signals, and the resulting control signal is also applied to the transducer deflecting device for determining the next desired track to be followed by the transducer.
    公开号:SU1068052A3
    申请号:SU792818555
    申请日:1979-09-06
    公开日:1984-01-15
    发明作者:Сакамото Хитоси；Вакисака Есиаки
    申请人:Сони Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    the output of the analogue valve is connected to the third input of the summing integrator, and the output bus of the displacement signal generator from the recording track is connected to the second input of the second voltage adder
    2. The device according to claim 1, characterized in that (the displacement signal shaper from the recording track contains a strain gauge mounted on the holder, the first and second band-pass filters, an error detection element and a multiplier, the input and output buses of the displacement signal shaper from the recording track are connected correspondingly with the input of the error detection element and with the multiplier output, the first band-pass filter is connected between the output of the error detection element and the first input of the multiplier, and the second band-pass filter is between the shadow sensor and the second input multiplier.
    3, The device according to claim 1, so that a fork-drive of the speed of the magnetic tape contains a monostable multivibrator, a counter, a GLKxirovany element and a digital-to-analog converter connected in series, and the digital-analogue converter output and the counter input are connected respectively to the output bus and to the second input bus of the signal generator of the speed of movement of the magnetic tape, and the first input line of the generator of the speed of movement of the magnetic tape is connected to the inputs of the monostable mule vibrator and fixation element.
    4. The device according to A.1, about t l and that the driver of the step function
    made in the form of a serially connected analog converter and an additional digital analog converter.
    The invention relates to the accumulation of information, namely, devices for controlling the position of a rotating magnetic head.
    A device for controlling the position of a rotating magnetic head containing a displacement signal generator of a recording track made in the form of a comparison unit of reference and reproduced sync pulses is known. This device allows providing control of the position of a rotating magnetic head with relative simplicity of its design 11.
    A disadvantage of the known device COCTO1ST in its low speed.
    The weight: gvo is also a device containing a driver of the displacement signal from the recording track, an input bus that connects , the input bias voltage bus, the input bus of the reproduced horizontal sync pulses, the input bus of the reproduced frame sync pulses, and the input bus of the reference personnel with Inputs. This device allows to provide a relatively high speed L 2 j. The disadvantage of dunking device is a significant error.
    position control of a rotating magnetic head. The latter is explained by the significant effect of the velocity of movement of the magnetic mite on the result of the position control.
    rotating magnetic head.
    The purpose of the invention is to reduce the error in controlling the polishing of a rotating magnetic head.
    The goal is achieved
    tey (that in the device for controlling the position of the rotating magnetic holoIMP containing a driver of the displacement signal from the recording track, the input bus. - which is connected
    to a rotating magnetic head mounted on a rotating guide drum by means of a holder connected to the output of the excitation signal generator, a reference clock, cyi atop voltage, input bias voltage bus input bus of reproduced horizontal sync pulses, input busbar bus 30 and the input bus of the reference frame sync pulses, the driving signal of the speed of movement of the magnetic tape, the first
    the input bus of which is connected to the input bus of the reproduced horizontal sync pulses, and the second input bus to the output of the reference clock, the summing integrator, the first input of which is connected to the output bus of the bias signal from the recording track, the second input with the output of the first voltage adder output - with the first input of the second voltage adder, connected by the output to the first input of the third voltage adder, the output of which is connected to the input of the driver of the excitation signal, A second valve connected by the first input to the input bus of reproduced human clock pulses, and a second input to the output of the fourth voltage adder, a sinusoidal signal generator whose output is connected to the second input of the third voltage adder, a voltage comparator connected by the output to the fourth input voltage accumulator, step signal shaper, the output of which is connected to the second input of the fourth voltage adder and to the first input of the fifth voltage adder, divide voltage two, connected to the second input of the fifth voltage adder, and a sweep error signal generator connected to the input bus of the reference frame sync pulses and the output of the reference generator of tatts, and the input: scan error signal, the output of which is connected to the first input of the voltage comparator connected by the second input to the output of the fifth voltage adder, the output bus of the speed signal generator d A magnetic tape is connected to the input of a voltage divider by two, to the forglirovator signal input of the step function and to the first input of the first voltage adder, the second input of which is connected to the input bias voltage bus, the output of the analogue valve is connected to the third input of the sum -5 integrator , and the E bus of the driver of the signal of displacement from the recording track is connected to the second input of the second sum of the voltage regulator.
    The shaper of the displacement signal from the recording track may contain a strain gauge mounted on the holder, the first and second bandpass filter error detection element and 1. multiplier, the input and the output driver bus of the offset signal generator from the recording track element and the multiplier output The first bandpass filter is connected between the output of the error detection element and the first input of the multiplier, and the second bandpass filter is between the load cell and the second input of the multiplier.
    The shaper of the speed of movement of the magnetic tape may contain a monostable multivibrator, a counter, a latching element and a digit-analog converter connected in series, the digit-analog converter1 output and the meter input are connected to the output bus and the magnetic tape speed signal input bus, respectively The first input bus of the magnetic field speed signal generator is connected to the inputs of a monostable multivibrator and a fixation element.
    The step function generator can be made in the form of an analog-to-digit converter connected in series and an additional analog-to-digit converter,
    The proposed device, due to the introduction of a velocity generator of a magnetic tape, a cy integrator, an analog valve, a sinusoidal signal generator, a voltage comparator, a step function signal generator, a voltage divider by two, and a scanning error signal generator, allows a significant reduce the error in controlling the position of the rotating magnetic head.
    The drawing shows one of the possible variants of the proposed device.
    The device comprises a driver 1 of the offset signal from the recording tracks, the input bus 2 of which is connected to a rotating magnetic head 3 connected to the input of amplifier 4 and mounted on a rotating guide drum (not shown) in maturity of holder 5; shaper of the signal of the speed of the magnetic tape, summation-search integrator 7 and analog gate 8. Holder 5 performed as a bimorph piezoelectric plate and connected to the output of shaper 9 of the excitation signal. The first input signal of the driver of the 6th speed of the magnetic tape movement is connected to the input bus 1 of the reproduced horizontal sync pulses, and the second input bus 11 is connected to the output of the reference oscillator 12 clock pulses. The first input of integrator 7 is connected to the output bus 13 of the driver 1 of the displacement signal from the recording track through a resistor 14, and its second input is connected to the output of the first cyMfjjaTopa 15 voltage via a resistor 16. The output of the summing, integrator 7 is connected to the first input of the second adder 17 connected to the output bus 13 of the driver 1 signal Offset from the recording track, and the output to the first input of the third voltage adder 18, the output of which is connected to the input of the driver 9 of the excitation signal. The analog valve 8 is connected to the input bus 19 of the reproduced Frame sync pulses by the first input, is connected to the output of the fourth adder of the 20 voltages by the second input and is connected via an output of the resistor 2 to the third input of the summing integrator 7.
    The proposed device also includes a sinusoidal signal generator 22, the output of which is connected to the second input of the third voltage adder 18, a voltage comparator 23 connected by an output to the first input of the fourth voltage adder 20, a step function signal generator 24, a voltage divider 25 and two 26 scan error signal generator. The output of the shaper function signal generator 24 is connected to the second input of the fourth voltage adder 20 and to the first input of the fifth voltage adder 27. The output of the voltage divider 25 to two is connected to the second input of the fifth adder 27 voltages. The oscillator error signal generator 26 is connected to the input NINA 28 reference frame sync pulses and to the generator output 12 clock pulses. The input bus 19 of the reproduced frame sync pulses is connected to the generator 26 of the sweep error signal, the output of which is connected to the first input of the voltage comparator 23 connected by the second input to the output of the fifth voltage adder 27 The output bus 29 of the driving speed signal of the magnetic tape is connected to the input the voltage divider 25 is two with the input of the shaper function signal generator 24 and with the first input of the first voltage adder 15, the second input of which is connected to the input voltage: other than 30 voltage Displacement.
    Shaper 1 of the displacement signal from the track. The recording contains a strain gauge 31 fixed on the holder 5, the first and second band-pass filters 32 and 33, the error detection element 34 and the multiplier 35. The input 2 and output 13 of the tire shaper 1 of the offset signal from to, the recording horns are connected respectively, with the input element, 34 error detection and. with output l multiplier 35 ,. The first band-pass filter 32 is connected between the output of the error detection element 34 and the first emitter of the multiplier -35. The second band-pass filter 33 is connected between the strain gauge 31 and the second input / multiplier 35,
    The former B of the speed of movement of the magnetic tape comprises a Yunostable multivibrator 36, a counter 37, a fixation element 38 and a digit-analog converter 39 connected in series. The output of the converter 39 is a digital analogue and the input of the counter 37 are connected respectively to the output bus 29 and to the second input bus 11 of the driver of the speed of movement signal of the magnetic tape. First input tire for driver &amp; The signal.; 1a the speed of movement of Magnitka lznty is connected to the inputs of a monostable multivibrator 36 and a fixing element 38.
    A shaper function generator 24 is executed in Btffle connected ps successively. An analog-to-digit converter 40 and a first additional converter 41 digit-analog and a scan error signal generator 26 are connected in series with an additional counter 42, memory block 43 and second additional 44 digit converter an. log ,. connected via a resistor 45 to the power supply bus 46
    The position control of the rotating magnetic head iiOcpeflCTBOM of the proposed device is passed as follows.
    The shaper 6 of the signal of the speed of movement of the magnetic tape on the basis of the reproduced lowercase syncrympes arriving on its first input bus and the clock pulses supplied on its second input bus 11 generates a signal of the speed of movement of the magnetic tape. This signal is fed to the first voltage adder 15, in which, together with the bias voltage, it forms a signal for the slope compensation factor. The latter comes through the summation of the integrator on the second cyNMaTop 17 of the voltages, in which it is added to the displacement signal from the recording track. The result of adding the second voltage from the output of the second adder 17 is applied to the third. a voltage adder 18, in which it is added to a high frequency sinusoidal signal. The result of addition from the output of the third voltage adder 18 through the driver 9 of the excitation signal affects the holder 5, the oscillations of which correct the position of the rotating magnetic head 3 on the recording track. The signal of the rotating magnetic head 3 goes to the input bus 2 of the driver 1 of the displacement signal from the recording track to the strain gauge 31 which affects the oscillations of the holder 5.
    The sweep error signal generator 26 supplies the comparator 23 with a voltage determined by clock pulses, as well as reference and replayed clock pulses, the phase shift of which is
    the magnitude and direction of deviation of the rotating magnetic head 3 at the end of the recording track. This voltage is compared in the voltage comparator 23 with the result of the addition of the voltage divider 25 to two and the step function 24 of the voltage generator. The result of the comparison in the voltage comparator 23 after adding the step function signal to the signal generator 24 is fed through analog valve 8 to summing integrator 7. This causes the rotating magnetic head to return to the initial recording track,
    The use of the invention in comparison with the base I object makes it possible to reduce the degree of control of the Br position of the magnetic head.
    权利要求:
    Claims (4)
    [1]
    1. CONTROL PURPOSE DEVICE i. BY REDUCING A ROTATING MAGNETIC SOCKET, containing a shaper of a bias signal from a recording track, the input bus of which is connected to a rotating magnetic head mounted on a rotating guide drum by means of a holder connected to the output of a shaper of an exciting signal, a reference clock · pulse generator, voltage voltage input voltage input , the input bus of the reproduced horizontal sync pulses, the input bus of the reproduced frame sync pulses and the reference frame input bus synchronization pulses, with the exception of the fact that, in order to reduce the control error, a speed driver is introduced into it: a magnetic tape movement, the first input bus of which is connected to the input bus of the reproduced horizontal sync pulses, and the second input bus is to the output of the reference clock generator, a summing integrator, the first input of which is connected to the output bus of the displacement signal shaper from the recording track, the second input with the output of the first voltage adder, and the output with the first input of w of the second voltage adder connected to the first input of the third voltage adder, the output of which is connected to the input of the driver of the excitation signal, an analog valve connected by the first input to the input bus of the reproduced frame sync pulses, and the second input to the output of the fourth voltage adder, a sinusoidal signal generator, output which is connected to the second input of the third voltage adder, a voltage comparator connected by the output to the first input of the fourth voltage adder, f the ripper "signal of the step function, the output of which is connected to the second input of the fourth voltage adder and to the first input of the fifth voltage adder, a voltage divider into two, connected by the output to the second input of the fifth voltage adder, and a sweep error signal generator connected to the input bus of the reference frame sync pulses and with the output of the reference clock generator, the input bus of the reproduced frame sync pulses being connected to the sweep error signal generator, the output of which a first input connected to a voltage comparator, a second input connected to the output of the fifth adder voltages output bus signal shaper sko-
    V <5S0§9 (JT of magnetic tape movement is connected to the input of the voltage divider by two, to the input of the signal conditioner of the step function and to the first input of the first voltage combiner, the second input of which is connected to the input bias voltage bus, the output of the analog valve is connected to the third input a summing integrator, and the output bus of the shaper of the bias signal from the recording track is connected to the second input of the second voltage adder.
    [2]
    2. The device according to claim 1, characterized in that the driver of the bias signal from the recording track contains a load cell mounted on the holder, the first and second bandpass filters, an error detection element and a multiplier, the input and output buses of the driver of the bias signal from the recording track are connected respectively with the input of the error detection element and with the output of the multiplier, the first band-pass filter is connected between the output of the error detection element and the first input of the multiplier, and the second band-pass filter is between the strain gauge and the second input multiplier house.
    [3]
    3. The device according to claim 1, wherein the driver of the magnetic tape speed signal comprises a monostable multivibrator, a counter, a Fixing element and a digital-to-analog converter, connected in series, the digital-to-analog converter output and the counter input respectively connected to the output the bus and to the second input bus of the shaper of the speed signal of the magnetic tape, and the first input bus of the Shaper of the speed signal of the magnetic tape is connected to the inputs of the monostable multivariate ibrator and locking element.
    [4]
    4. The device according to claim 1, wherein the signal conditioner of the step function 1 is made in the form of an analog-digit converter and an additional digital-analog converter connected in series.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1068052A3|1984-01-15|Device for controlling position of rotating magnetic head
    US4148082A|1979-04-03|Tracking control apparatus
    US4065787A|1977-12-27|Time base corrector
    US4296443A|1981-10-20|Magnetic head tracking control system
    US4203140A|1980-05-13|Helical scan VTR with deflectable head
    EP0051938B1|1984-02-01|Video signal reproducing apparatus
    US4658309A|1987-04-14|Tracking controlling apparatus
    EP0032834B1|1984-01-25|A positionable element driving circuit
    GB2063518A|1981-06-03|Head positioning signal generating apparatuses for helical scan type video tape recorders
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    GB2071873A|1981-09-23|Automatic head tracking arrangements for helical scan video tape recorders
    US4167762A|1979-09-11|Open loop servo-system for accurate tracking in a video signal reproducing apparatus
    US4663555A|1987-05-05|Method and apparatus for controlling a bimorph leaf which supports a deflectable head
    GB1494510A|1977-12-07|Tape playback apparatus including timing error correcting means
    US4791507A|1988-12-13|Apparatus for reproducing information at variable speeds from a magnetic tape
    US4246536A|1981-01-20|Electronic velocity measurement device
    GB2097559A|1982-11-03|Tracking control system
    GB2096801A|1982-10-20|Tracking control system in a magnetic recording and reproducing apparatus
    EP0043739B1|1985-07-17|Tracking system
    EP0194445A2|1986-09-17|Auto tracking apparatus for video tape recorder
    US4389686A|1983-06-21|Tracking apparatus for use in a video tape recorder
    US4445146A|1984-04-24|Digital tracking control system for video tape reproducing apparatus
    EP0217091A1|1987-04-08|Velocity error correcting circuit for time base error corrector
    US4086520A|1978-04-25|Speed and phase control system
    US4471392A|1984-09-11|Automatic scan tracking with ringing control
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    AU530888B2|1983-08-04|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPS50103096A|1974-01-23|1975-08-14|
    GB1579854A|1976-03-19|1980-11-26|Ampex|Method and apparatus for producing time base altered effects in data recording and reproducing apparatus|
    GB1560023A|1976-10-05|1980-01-30|Sony Corp|Automatic magnetic-head scan tracking arrangements|
    US4163993A|1978-03-23|1979-08-07|Ampex Corporation|Continuous slow motion automatic tracking system|JPS639434B2|1979-05-31|1988-02-29|Sony Corp|
    JPS634387B2|1980-02-16|1988-01-28|Sony Corp|
    JPS6319930B2|1980-03-13|1988-04-25|Sony Corp|
    US4485414A|1980-07-07|1984-11-27|Ampex Corporation|Servo system for positioning a movable transducing head assembly|
    JPS6258045B2|1980-07-23|1987-12-03|Sony Corp|
    JPS6349954B2|1980-08-06|1988-10-06|Sony Corp|
    JPH0154917B2|1980-09-09|1989-11-21|Sony Corp|
    JPS6349956B2|1980-11-07|1988-10-06|Sony Corp|
    JPH0126231B2|1981-02-14|1989-05-23|Sony Corp|
    JPS644395B2|1981-02-24|1989-01-25|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|
    JPH0328115B2|1981-12-04|1991-04-18|Sony Corp|
    US4544967A|1982-04-02|1985-10-01|Ampex Corporation|Automatic scan tracking servo system|
    EP0304633B1|1982-09-17|1993-01-20|Ampex Corporation|An improved automatic head position tracking servo for a rotary head magnetic tape recording and reproducing apparatus|
    US4679098A|1982-09-17|1987-07-07|Ampex Corporation|Video tape transport servo for variable tape speed control|
    AT376860B|1983-03-15|1985-01-10|Philips Nv|SYSTEM FOR PLAYING BACK INFORMATION SIGNALS STORED ON A MAGNETIC TAPE|
    JPH0568152B2|1983-07-08|1993-09-28|Sony Corp|
    JPS60158781A|1984-01-27|1985-08-20|Sony Corp|Video tape recorder|
    US4791507A|1984-05-11|1988-12-13|Matsushita Electric Industrial Co., Ltd.|Apparatus for reproducing information at variable speeds from a magnetic tape|
    US5189572A|1984-08-16|1993-02-23|Ampex Corporation|Magnetic control of a transducer signal transfer zone to effect tracking of a path along a record medium|
    JPH0677292B2|1984-09-28|1994-09-28|ソニー株式会社|Automatic tracking device|
    US4933784A|1988-10-31|1990-06-12|Ampex Corporation|Automatic head position tracking system for video signals recorded in a segmented format|
    法律状态:
    优先权:
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    JP53110174A|JPS6252991B2|1978-09-07|1978-09-07|
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