SU482797A1 - Magnetic recording and sensing device for accurate modulated signals - Google Patents

Magnetic recording and sensing device for accurate modulated signals

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Publication number
SU482797A1
SU482797A1 SU2003830A SU2003830A SU482797A1 SU 482797 A1 SU482797 A1 SU 482797A1 SU 2003830 A SU2003830 A SU 2003830A SU 2003830 A SU2003830 A SU 2003830A SU 482797 A1 SU482797 A1 SU 482797A1
Authority
SU
USSR - Soviet Union
Prior art keywords
magnetic recording
modulated signals
sensing device
output
frequency
Prior art date
Application number
SU2003830A
Other languages
Russian (ru)
Inventor
Виктор Борисович Гаевский
Евгений Владимирович Дивин
Леонид Григорьевич Смирнов
Геннадий Дмитриевич Чибисов
Original Assignee
Предприятие П/Я А-3759
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-3759 filed Critical Предприятие П/Я А-3759
Priority to SU2003830A priority Critical patent/SU482797A1/en
Application granted granted Critical
Publication of SU482797A1 publication Critical patent/SU482797A1/en

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  • Digital Magnetic Recording (AREA)

Description

предварительсигнала , который усиливаетс  ным усилителем 7.a preliminary signal that is amplified by an amplifier 7.

С выхода усилител  7 сигиал постуиает на формирователь импульсов по нулю, в качестве которого может быть исиользован усилитель-ограничитель , выполненный, например, в виде операционного усилител . Одновременно с выхода предварительного усилител  сигнал иоступает на формирователь импульсов по максимуму и минимуму. Импульсы с выходов формирователей 8 и 9 подаютс  на блок 10 сложени . В результате импульсы с выхода блока сложени  имеют частоту, в четыре раза превышающую частоту несуш,ей, поступающей на головку воспроизведени . Импульсы с выхода блока сложени  поступают па демодул тор , состо щий из формировател  и фильтра низких частот, иа выходе которого выдел етс  информативный сигнал.From the output of the amplifier 7, the sigil sets to zero on the pulse shaper, which can be used as an amplifier-limiter, made, for example, in the form of an operational amplifier. Simultaneously, from the output of the preamplifier, the signal arrives at the pulse shaper by the maximum and minimum. The pulses from the outputs of the formers 8 and 9 are supplied to the addition unit 10. As a result, the pulses from the output of the add-on unit have a frequency that is four times higher than the frequency of the layer supplied to the reproduction head. The pulses from the output of the addition unit are received by a demodulator consisting of a driver and a low-pass filter, the output of which is allocated an informative signal.

Увеличение несущей частоты позвол ет снизить уровень комбинационных составл ющих и, следовательно, повысить плотность записьшаелгых сигналов. Кроме того, увеличиваетс  амплитуда полезного сигнала за счет увеличени  девиации несуи1ей частоты.Increasing the carrier frequency reduces the level of combinational components and, consequently, increases the density of the recorded signals. In addition, the amplitude of the useful signal is increased by increasing the deviation of the unsigned frequency.

П р е д м е т и з о б р е т е и и  PRIOR DIRECTORSHIP and

Устройство дл  магиитной записи и воспроизведени  частотно-модулированных сигналов , содержащее соединенный последовательно частотный модул тор, выполненный в внде управл емого по частоте мультивибратора , триггерный делитель частоты в четиое число раз, усилитель записи, и магнитную головку записи, магнитную головку воспроизведени , подключенную к предварительиому усилителю воспроизведени , формирователь поA device for magically recording and reproducing frequency-modulated signals, containing a series-connected frequency modulator, made in a vnde frequency controlled multivibrator, a trigger frequency divider four times, a recording amplifier, and a magnetic recording head, a magnetic reproduction head connected to the prefix playback amplifier, driver

и демодул тор, отличающеес  тем, что, с целью увеличеии  плотности записи и сниженн  уровн  комбинационных составл ющих, оио снабжено соединенными последовательно формирователем импульсов по максимуму и and a demodulator, characterized in that, in order to increase the recording density and decrease the level of the Raman components, the OIO is provided with serially connected pulse shaper for maximum and

минимуму и блоком сложени , причем одии вход и выход блока сложени  подключеиы соответственно к выходу формировател  по нулю и к входу демодул тора, а входы обоих формирователей подключены к выходу предварительного усилител  воспроизведени .the minimum and the addition unit, and the input and output of the addition unit are connected to the output of the driver along zero and to the input of the demodulator, and the inputs of both drivers are connected to the output of the playback preamplifier.

SU2003830A 1974-03-11 1974-03-11 Magnetic recording and sensing device for accurate modulated signals SU482797A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2003830A SU482797A1 (en) 1974-03-11 1974-03-11 Magnetic recording and sensing device for accurate modulated signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2003830A SU482797A1 (en) 1974-03-11 1974-03-11 Magnetic recording and sensing device for accurate modulated signals

Publications (1)

Publication Number Publication Date
SU482797A1 true SU482797A1 (en) 1975-08-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU2003830A SU482797A1 (en) 1974-03-11 1974-03-11 Magnetic recording and sensing device for accurate modulated signals

Country Status (1)

Country Link
SU (1) SU482797A1 (en)

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