SU1283849A1 - Unit for reading information for storage - Google Patents

Abstract

The invention relates to computing and is intended for use in magnetic storage devices. The aim of the invention is to increase the reliability of the read unit. The device contains a preamplifier, a filter amplifier, a playback amplifier, a discriminator, a strobe driver, a delay unit, a group of reproduction amplifiers, a discriminator group, a strobe driver group, a filter group, AND elements, and OR element. The block achieves an increase in reliability due to the organization of analysis and parameters of system signals. 1 il. (L with:

Description

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The invention relates to computing and is intended for use in magnetic storage devices.

The aim of the invention is to increase the reliability of the read unit. The drawing shows the scheme of the proposed block for reading information for a memory device.

 The information reading unit for the memory device contains a preamplifier 1, whose inputs are the first and second inputs 2 of the readout unit, filter 3, ... playback amplifier 4, discriminator 5, gate driver 6, delay block 7, group of gate drivers 8, group of amplifiers 9 playback, a group of discriminators 10 whose inputs are the third input T1 of the readout block, the input of the delayed block is the fourth input 12 of the readout block, filter group 13, AND elements 14, the SHSh 15 element, the output of which is the read output 16. no.

. The unit works in a manner similar to. When reading, the reading signal together with the noise enters the inputs 2 of the block and further to the amplifier 1. From the output of the amplifier 1, the amplified reading signal I together with the noise is fed to

input filter 3 and the input filters 13

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one element And from elements And 14, At the same time, the other inputs of elements And 14 receive signals in a certain combination from the outputs of amplifiers 9, Moreover, the formation of a signal at the output of the corresponding additional reproduction amplifier 9 will occur under the condition that some level of discrimination is exceeded in it

0 in advance of the specified gate time determined by the delay unit 7. The level of discrimination is established in the process of adjusting the block according to a read reference signal made up of certain frequency components. When reading about the interference, this procedure passes, but the frequency components cannot be completely identical to the frequency components of reading 1, and therefore either the amplifier or certain amplifiers of group 9 will not work, and their discrimination level will come from the discriminators 10 at the time of gating, determined by the gate driver 8 based on signals from the delay unit 7. Thus, at output 16 of the block, a read signal 1 will be formed, if all necessary and sufficient frequency indications of the presence of a read signal 1 are detected. Due to this, one

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exactly the required number of individual bandpass filters. After the filter, the read signal is fed to the first input of the playback amplifier 4,

The second input of the amplifier 4 receives the Q discrimination level from the discriminator 5, the input of which is connected to the third unit input 11, the output voltage of which is set by the control voltage from the memory control unit 45. The third input of the amplifier 4 receives a strobe pulse Forming 6 strobe. Pulse time

Claims (1)

Invention Formula A read information block for a storage device, comprising a strobe driver, a preamplifier whose inputs are the first and second inputs of the read block, a discriminator whose input is the third input of the read information block for the storage device, the filter whose input is connected to the output the information storage pre-block for the memory device, comprising a strobe driver, a preamplifier whose inputs are the first and second inputs of the reader unit, the screener, the input of which is the third input of the information reading block for the storage device, the filter whose input is connected to the prewave output is determined by the input signal on the third input 12 of the block with some JQ amplifier, and the output delays. To the first input of the playback amplifier, the CMM, if the read signal in the second and third inputs of which the gating unit is higher than a certain preset level of the discriminator and strobe former, mination, respectively, to the output the inputs of the elements whose input is connected to the output of the And 14 will receive the enabling signal. A single delay unit whose input is at the input of the element OR 15 and further at the output of the block 16 will receive a read signal under the condition that it is triggered by the fourth input of the readout block, characterized in that one element And from elements And 14, At the same time, the other inputs of elements And 14 receive signals in a certain combination from the outputs of amplifiers 9, Moreover, the formation of a signal at the output of the corresponding additional amplifier 9 playback will occur under the condition that a certain level of discrimination is exceeded in advance of the specified gate time determined by the delay unit 7. The level of discrimination is established in the process of adjusting the block according to a read reference signal made up of certain frequency components. When reading about the interference, this procedure passes, but the frequency components cannot be completely identical to the frequency components of reading 1, and therefore either the amplifier or certain amplifiers of group 9 will not work, and their discrimination level will come from the discriminators 10 at the time of gating, determined by the gate driver 8 based on signals from the delay unit 7. Thus, at output 16 of the block, a read signal 1 will be formed, if all necessary and sufficient frequency indications of the presence of a read signal 1 are detected. Due to this, one Invention Formula A read information block for a storage device, comprising a strobe driver, a preamplifier whose inputs are the first and second inputs of the read block, a discriminator whose input is the third input of the read information block for the storage device, the filter whose input is connected to the output the preamplifier, and the output to the first input of the playback amplifier, the second and third inputs of which are connected respectively to the output of the discriminator and the gate former, the input cat It is connected to the output of the delay unit whose input is owed by and the output to the first input of the playback amplifier, the second and third inputs of which are connected respectively to the output of the discriminator and the strobe generator, whose input is connected to the output of the delay unit, whose input is It is provided with a fourth input of a readout unit, characterized in that, in order to increase the reliability 3128384 block readout, it contains a group of filters, a group of playback amplifiers, a group of discriminators, a group of strobe drivers, AND elements and OR elements whose inputs are connected to the outputs of the corresponding AND elements whose inputs are connected to the outputs of the corresponding playback amplifiers, first / second and third inputs of amplifiers Sunday fO group products are connected to the group filter outputs, group discriminators and group gate drivers, respectively, the group gate drivers are connected to the outputs of the delay block, the group discriminators outputs are combined with the discriminator output, and the filter group inputs are connected to the preamplifier output.