SU568079A1 - Arrangement for writing information into store - Google Patents

Description

(54) DEVICE FOR RECORDING INFORMATION IN THE DRIVE

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This invention relates to memory devices.

Devices are known for recording information into a half-drive type storage device with electrical overwriting of PID information.

The device ij forms an impulse. c or a series of pulses applied to the pagmite element to transfer it to the opposite state. A feature of the device is the i-i that in the same recording cycle, the same number of pulses of a certain duration and amplitude is applied to each element.

At present, accumulators have been developed with electrical rewriting of information based on vitreous semiconductor materials, the resistance of which changes during the transition from the amorphous phase to the crista; lyric. This property is used when running the drive. Due to the non-uniformity of the structure of vitreous semiconductor materials, the minimum number of pulses necessary for the transfer of an electric power to the opposite state when rewriting information is different.

individual items. If a known device for recording information in each cycle generates a single pulse, the recording cycles are repeated until the element goes into the opposite state. If the recording is made by a series of pulses, then for each memory element a certain number of pulses is redundant, moreover, these additional pulses can return the element to its previous state. Thus, the use of a known device for recording information on accumulators based on vitreous semiconductor materials is not. ensures reliable operation. :. :

The most technical solution to the proposed is a device for recording information into a drive containing a generator connected via an address switch to key elements whose outputs are connected to the device's information outputs, amplifiers whose inputs are connected to the inputs of the device 2. This device also does not provide reliable operation in the case of recording information in n drives on vitreous semiconductor materials, since it gives a fixed number of write pulses.

The purpose of the invention is to increase the reliability and speed of the device.

The goal is achieved by the fact that the device contains a recording time control unit and a recording level control unit, the inputs of which are connected respectively to the outputs of the amplifiers and the information input of the generator, and the output to the control input of the generator. The input of the recording time control unit is connected to one of the outputs of the address switch, and the outputs of the recording time control unit are connected to the control input of the generator and the device output, respectively. |

This ensures that not only the number of pulses that is needed for a given element is supplied to each memory element, i.e., the reliability of the device is increased and the recording time is reduced

The drawing shows a block diagram of the proposed device.

The device for recording information in the accumulator contains a generator 1, an address KON mutator 2, key elements of record 3 and read 4 connected to input 5 of the device, read amplifiers 6, recording level control unit 7, recording time control unit 8. Inputs of block 7 connected respectively to the outputs of amplifiers 6 and information input 9 of generator 1. The input of switch 2 is connected to address 10. The output of block 7 is connected to the control input of generator 1. The input of block 8 is connected to one of the outputs of address switch 2, and its outputs are connected respectively to the control input of the generator 1 and the output 11 of the device. A memory element J-4 is connected to the information output of the device 12 and 13.

The device works as follows.

Generator 1, depending on the satellite to the information input 9, generates pulses of the required duration, which nocTj feed to the pulse input of the switch 2. Depending on the address supplied to the address input 10, the selection of the corresponding- is performed. corresponding key elements of record 3 and read 4. The control pulses, which are received from generator 1, open key elements 3 and 4 alternately through switch 2; memory element 14, after a recording pulse coming from key record 3, is impulsed from key read element 4. At read amplifier 6, a signal read from memory 14 is outputted and lowered to write level control unit 7, where it is compared with the input information. When the information read from the memory element 14 coincides with the information set at input 9, the recording level control unit 7 generates a signal prohibiting the operation of generator 1, and the recording stops. If the recording does not happen when the permissible number of pulses is fed to the memory element, then the recording time control unit 8 is triggered, which will prohibit the operation of generator 1 and simultaneously generate an error signal at output 11.

Claims (2)

1. US patent No. 3838 297, cl. H 03 K 5/00, 1974. 2. Electronics, № 2О, 1970 ,, 4-9.