SU1387043A1 - Analog storage device - Google Patents

Description

(21) 4158816 / 24-24

(22) 10/31/86

(46) 04/07/88. Bul № 13

(72) V.S. Bondarenko, V.V. Krinochkin,

M.V. Manuilov and B.V. Sobolev

(53) 681.327.66 (088.8)

(56) Ultrasound.- Little encyclopedia. M .: Sovetsk encyclopedia, 1970, p. 282.

Manuilov, V.V., Bondarenko, V.S., Krinochkin, V.V., and Sobolev, B.V. A Letter to the Journal of Technical Physics, 1986, v. 12 vol. 10, s. 599.

(54) ANALOG STORAGE DEVICE

(57) The invention relates to electronics and computing. The purpose of the invention is to improve the noise immunity of the device. The goal is achieved by reducing the sensitivity of the device to external magnetic fields. The electromagnetic field, excited by a read pulse, is concentrated mainly between the electrodes of the piezoelectric transducer, therefore its penetration to the information signal converter is very small. The distortion of the frequency response is reduced by reducing the magnetic pickup at the output of the device by 100 times. The device contains a magnetostriction information carrier 1, a piezoelectric converter 2 information signals, elements 3, 5 and 9 of recording / reading, switching and erasing. 1 il.

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The invention relates to computing and electronics, in particular, to devices for recording, storing and processing analog information based on domain-acoustic echo.

The aim of the invention is to improve the noise immunity of the device.

The drawing shows an analog storage device.

The device contains a magnetostrictive information carrier 1, a piezoelectric converter 2 information signals, a recording and reading element 3 in the form of a piezoelectric converter, a controlled generator of 4 radio pulses, a switching element 5, a generator 6 of information 15 pulses, a recording device 7, a block 8 synchronization, element 9 erase and generator 10 current pulses.

The piezoelectric transducer can be made in the form of a plate of half-wave thickness from a piezoelectric material (lithium niobate, piezoceramics), on the working faces of which metal electrodes are sprayed.

The converter through element 5 is connected either to the generator 6 (in the process of writing) or to the recording device 7 (in the process of reading), for example, to an oscilloscope. Element 9 in the form of inductance is made of copper wire and creates a magnetic field of 100 Oe.

The device works as follows. thirty

Before recording, the material 1 of the carrier 1 is demagnetized by applying a current pulse to the element 9 from the generator 10. At the moment the recording process starts, the information signal from the generator 6 is fed to the input of the converter 2, which excites an acoustic wave in the carrier 1. AT

point in time (), where T is the duration of the information radio pulse. L is the length of the carrier 1 in the direction of expansion 20

35

homogeneity, corresponding to the phase portrait of the information acoustic wave, and hence the information signal. This structure can be maintained for a long time (several days or more) in the carrier 1 due to the coercivity inherent in ferromagnets. To read the information, it is necessary to switch element 5, thereby connecting converter 2 to the input of recording device 7, and send a radio pulse from generator 4 to converter 3. The acoustic wave excited by this converter affects the structure of magnetic inhomogeneities formed during the recording stage and excites due to nonlinearity, the acoustic wave propagating to transducer 2 is a copy recorded. On the transducer 2, the acoustic wave is converted into an information signal. Reading information into the device is non-destructive.

In the device, when the reading pulse is applied, the electromagnetic field excited by it is concentrated between the electrodes of the piezoelectric transducer. Due to this, the level of electromagnetic interference at the output of the device decreases by a factor of 100 or more and, consequently, the distortion of the frequency response of the device is reduced.

Claims (1)

Invention Formula An analog storage device containing a magnetostriction information carrier, a piezoelectric information signal converter, an information recording and reading element, a commutation element, an erase element in the form of inductance, the outputs of which are connected respectively to the output of the current pulse generator and a zero potential terminal covering the magnetostrictive information carrier, piezoelectric pins the acoustic flow spaces, the tr-sko-40 converter of information signals, the velocity of acoustic waves from generator 4 to converter 3, are supplied with a recording radio pulse whose frequency coincides with the carrier frequency of the information signal. located at one of the ends of the magnetostriction information carrier, are connected to the output of the switching element, characterized in that, in order to increase the recording of the radio pulse, the device carrier 1 acoustic wave. The nonlinear interaction of acoustic waves due to the strong magnetoelastic coupling of the material of the carrier 1 leads to the appearance of the static component of the magnetic field and deformation in the intersection of the acoustic fluxes; The structure of magnetic recording and reading information is made in the form of a piezoelectric transducer and is located on the surface of the magnetostriction information carrier; As its acoustic flow crosses the acoustic flow of the piezoelectric information signal converter, the input of the recording and reading element is connected to the output of the controlled radio pulse generator. Compiled by A. Ershov Editor O. GolovachTekhred I. VeresKorrektor L. Pilipenko Order 1225/50 Circulation 590 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 homogeneity, corresponding to the phase portrait of the information acoustic wave, and hence the information signal. This structure can be maintained for a long time (several days or more) in the carrier 1 due to the coercivity inherent in ferromagnets. To read the information, it is necessary to switch element 5, thereby connecting converter 2 to the input of recording device 7, and send a radio pulse from generator 4 to converter 3. The acoustic wave excited by this converter affects the structure of magnetic inhomogeneities formed during the recording stage and excites due to nonlinearity, the acoustic wave propagating to transducer 2 is a copy recorded. On the transducer 2, the acoustic wave is converted into an information signal. Reading information into the device is non-destructive. In the device, when the reading pulse is applied, the electromagnetic field excited by it is concentrated between the electrodes of the piezoelectric transducer. Due to this, the level of electromagnetic interference at the output of the device decreases by a factor of 100 or more and, consequently, the distortion of the frequency response of the device is reduced. Invention Formula An analog storage device containing a magnetostriction information carrier, a piezoelectric information signal converter, an information recording and reading element, a commutation element, an erase element in the form of inductance, the outputs of which are connected respectively to the output of the current pulse generator and a zero potential terminal covering the magnetostrictive information carrier, piezoelectric pins information signal converter,  information signal converter, located at one of the ends of the magnetostriction information carrier connected to the output of the switching element, characterized in that, in order to record and read information, it is made in the form of a piezoelectric transducer and is located on the surface of the magnetostrictive information carrier so that its acoustic flow intersects the acoustic flow a piezoelectric information signal converter; an input element for recording and reading information is connected to the control output