SU932537A1 - Device for reproducing recorded digital and magnetic information - Google Patents
Device for reproducing recorded digital and magnetic information Download PDFInfo
- Publication number
- SU932537A1 SU932537A1 SU803008997A SU3008997A SU932537A1 SU 932537 A1 SU932537 A1 SU 932537A1 SU 803008997 A SU803008997 A SU 803008997A SU 3008997 A SU3008997 A SU 3008997A SU 932537 A1 SU932537 A1 SU 932537A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic
- input
- output
- reproduction
- unit
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- G11B5/3903—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects using magnetic thin film layers or their effects, the films being part of integrated structures
- G11B5/3906—Details related to the use of magnetic thin film layers or to their effects
- G11B5/3945—Heads comprising more than one sensitive element
- G11B5/3948—Heads comprising more than one sensitive element the sensitive elements being active read-out elements
- G11B5/3951—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes
- G11B5/3954—Heads comprising more than one sensitive element the sensitive elements being active read-out elements the active elements being arranged on several parallel planes the active elements transducing on a single track
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/09—Digital recording
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/488—Disposition of heads
- G11B5/4893—Disposition of heads relative to moving tape
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Description
Изобретение относится к магнитной записи, а именно к устройствам для воспроизведения цифровой магнитной записи.The invention relates to magnetic recording, and in particular to devices for reproducing digital magnetic recording.
Известно устройство для записи и воспроизведения цифровой магнитной записи, содержащее потокочувствительную головку с сигнальной обмоткой, подключенной к источнику постоянного тока (1]. .A device for recording and reproducing digital magnetic recordings containing a stream-sensitive head with a signal winding connected to a constant current source (1].
Недостаток известного устройства состоит в малой точности определения момента перехода намагниченности носителя через нуль.A disadvantage of the known device is the low accuracy of determining the moment of transition of the magnetization of the carrier through zero.
Известно устройство для воспроизведения цифровой магнитной записи, содержащее магнитную головку с двумя магниторезистивными датчиками, которые установлены между магнитньичи экранами перпендикулярно направлению движения магнитной ленты с промежутком между собой, меньшим минимальной длины волны записи, подключены к плечам мостовой схемы, диагональ которой через усилитель воспроизведения подключена к регистратору [2].A device for reproducing digital magnetic recordings containing a magnetic head with two magnetoresistive sensors that are installed between the magnetic screens perpendicular to the direction of movement of the magnetic tape with an interval between them shorter than the minimum recording wavelength, connected to the shoulders of the bridge circuit, the diagonal of which is connected through the playback amplifier to the registrar [2].
Недостаток устройства состоит в значительных колебаниях нуль-пересечений при воспроизведении цифровой 1магнитной записи.The disadvantage of this device is the significant fluctuation of zero-intersections when playing digital 1-magnetic recording.
Цель изобретения - повьвиение верности воспроизведения за счет уменьшения колебаний нуль-пересечений при воспроизведении цифровой магнитной записи.The purpose of the invention is to improve fidelity by reducing oscillations of zero-intersections when playing digital magnetic recordings.
Поставленная цель, достигается тем, что в устройство воспроизведено ния цифровой магнитной записи между магнитными экранами в промежутке между магнитореэистивными датчиками · установлен пьезоэлектрический преобразователь, подключенный через последовательно соединенные блок 15 управления, блок коррекции , блок сравнения и мультивибратор к второму выходу первого усилителя воспроизведения и второму входу блока сравнения, причем второй вход блока управления подключен к источнику постоянного напряжения.This goal is achieved by the fact that the device for reproducing digital magnetic recording between magnetic screens between the magnetoresistive sensors · has a piezoelectric transducer connected via series-connected control unit 15, correction unit, comparison unit and multivibrator to the second output of the first playback amplifier and the second the input of the comparison unit, and the second input of the control unit is connected to a constant voltage source.
На чертеже приведена схема устройства воспроизведения цифровой 25 магнитной записи (вариант).The drawing shows a diagram of a device for reproducing digital 25 magnetic recording (option).
Устройство содержит магнитную головку 1 с двумя магниторезистивными датчиками 2, которые установлены между магнитными экранами 3 и 4 30 перпендикулярно направлению движения магнитной ленты 5 с промежутком между собой, меньшим минимальной длины волны записи, подключены через первый и второй усилители 6 и 7 воспроизведения к входам мостовой схемы 8, диагональ которой является выходом 9 устройства, причем между Iмагнитными экранами 4 в промежутке между магниторезистивными датчиками 2 установлен пьезоэлектрический преобразователь 10, подключенный че- 1 рез последовательно соединенные блок 11 управления, блок 12 коррекции, блок 13 сравнения и мультивибратор 14 к второму выходу ’'rspBoro усилителя 6 воспроизведения и второму.вхо- 1 ду блока 13 сравнения, причем второй вход блока 11 управления подключен к источнику 15 постоянного напряжения.^The device contains a magnetic head 1 with two magnetoresistive sensors 2, which are installed between the magnetic screens 3 and 4 30 perpendicular to the direction of movement of the magnetic tape 5 with an interval between each other shorter than the minimum recording wavelength, connected to the bridge inputs through the first and second playback amplifiers 6 and 7 circuit 8, the diagonal of which is the output 9 of the device, and between the magnetic screens 4 in the interval between the magnetoresistive sensors 2 there is a piezoelectric transducer 10 connected the first one through a series-connected control unit 11, a correction unit 12, a comparison unit 13 and a multivibrator 14 to the second output of the rspBoro playback amplifier 6 and the second. input 1 to the comparison unit 13, the second input of the control unit 11 being connected to the source 15 DC voltage. ^
Устройство работает следующим j образом.The device operates as follows j.
При движении магнитной ленты 5 по поверхности магнитной головки 1 сигналы цифровой магнитной записи воспроизводятся при помощи магнито- резистивных датчиков 2, которые защищены от постороннего влияния магнитными экранами 3 и 4. С второго выхода первого усилителя 6 воспроизведения воспроизведенный сигнал посту- . пает на входа блока 13 сравнения непосредственно и через мультивибра- . тор 14. С выхода блока 13 сравнения сигнал компенсации колебаний нуль’ пересечений через блок 12 коррекции и блок 11 управления, второй вход которого соединен с источником 15 постоянного напряжения, поступает на пьезоэлектрический преобразователь 10, который изменяет расстояние между магниторезистивными датчиками 2, 4 приравнивая его длине волны записи.When the magnetic tape 5 moves along the surface of the magnetic head 1, digital magnetic recording signals are reproduced using magneto-resistive sensors 2, which are protected from extraneous influence by magnetic screens 3 and 4. A reproduced signal is output from the second output of the first playback amplifier 6. hits the input of block 13 comparison directly and through multivibra. torus 14. From the output of the comparison unit 13, the compensation signal of zero-crossing intersections through the correction unit 12 and the control unit 11, the second input of which is connected to the constant voltage source 15, is fed to the piezoelectric transducer 10, which changes the distance between the magnetoresistive sensors 2, 4 equating it recording wavelength.
Использование предлагаемого устройства позволяет повысить верность воспроизведения цифровой магнитной записи за счет уменьшения колебаний нуль-пересечений.Using the proposed device can improve the fidelity of reproducing digital magnetic recordings by reducing oscillations of zero-intersections.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU803008997A SU932537A1 (en) | 1980-11-26 | 1980-11-26 | Device for reproducing recorded digital and magnetic information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU803008997A SU932537A1 (en) | 1980-11-26 | 1980-11-26 | Device for reproducing recorded digital and magnetic information |
Publications (1)
Publication Number | Publication Date |
---|---|
SU932537A1 true SU932537A1 (en) | 1982-05-30 |
Family
ID=20927852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU803008997A SU932537A1 (en) | 1980-11-26 | 1980-11-26 | Device for reproducing recorded digital and magnetic information |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU932537A1 (en) |
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1980
- 1980-11-26 SU SU803008997A patent/SU932537A1/en active
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