SU711631A1 - Buffer storage - Google Patents

Description

I

The invention relates to the field of storage devices.

One of the known devices includes a drive, address decoder, input and output information blocks 1.

A disadvantage of the known device is high hardware costs and low speed of operation.

Of the known devices, the closest technical solution to this invention is a buffer storage device containing a drive, information inputs of which are connected to the outputs of elements AND of the first group, and information outputs with the first inputs of elements AND of the second group, the third group of elements AND, the first inputs of which are connected to the polling pin, and outputs to the polling inputs of the accumulator, input buses and write resolution buses, connected respectively to the inputs of the AND elements of the first group,

output and read resolution buses 2.

A disadvantage of this device is the inefficient use of storage capacity, consisting of separate blocks, each of which is intended to store information only from one of the message sources: some blocks may fail due to overflow, while other blocks are free.

Another disadvantage of the device is that it is necessary to provide a control and signaling of its filling for each of the storage units to register the storage accumulator blocks, which results in significant hardware costs, especially in the case of a large number of served message sources and increased requirements for reliability.

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

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The goal is achieved by the fact that the device contains an encoder, additional drives, a decoder, an OR-NOT element, and a block for generating additional-accumulator signals, whose inputs are connected to one of the additional accumulators, and the outputs to the inputs of the OR-NOT element which is connected to the second inputs of elements AND of the third group, the other outputs of additional drives are connected to output buses, and the inputs, respectively, with read resolution buses and outputs of elements AND of the second group, the inputs of the decoder are connected to the control outputs of the storage device, and the outputs to the second inputs of elements AND of the second group, the inputs of the encoder are connected to the write resolution buses, and the outputs to the control inputs of the storage device.

The drawing shows a block diagram of the proposed device.

The device contains a drive 1, additional drives 2, the first 3, the second 4 and the third 5 groups of elements AND, the encoder 6, the decoder 7, the forming units of the signals for additional drives 8, the element OR-NOT 9, the input buses Yu, the write resolution buses AND, interrogation bus 12, read resolution buses 13 and output tires 14.

The inputs of the blocks 8 are connected to one of the outputs of the drives 2, and the outputs to the inputs of the element OR NONE 9, the output of which is connected to one of the inputs of the elements And 5. The other outputs of the drives 2 are connected to buses 14, and the inputs respectively to tires 13 and the outputs of the elements And 4, the inputs of the decoder 7 are connected to the control outputs of the drive 1, and the outputs to one of the inputs of the elements And 4. The inputs of the encoder 6 are connected to the buses 11, and the outputs to the control inputs of the drive 1.

The device works as follows. .

Information from message sources, for example, telegraph devices, goes to the Y bus. Information is entered into drive 1 through elements AND 3 using the write-enable signals to the buses 11 and to the inputs of the elements 3. At the same time, the write enable signals go to the encoder's inputs. 6, which converts the position code to binary code. Binary

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 The code from the output of the encoder 6 is fed to the control input of the accumulator 1 and is recorded at the address at which the information is recorded, the incoming

5 from one of the message sources. Thus, in drive 1 there is information coming from sources with marks indicating that this information belongs to one or another source. With

0 reading information from the accumulator 1 binary code contained in the check bits at the determined address is sent to the inputs of the decoder 7 and is converted into a position code, which

 provides the selection of element And 4. At the same time, the information read out from the storage device 1 is transferred to the storage devices 2, each of which is intended to store information of only one well-defined source. These accumulators 2 have a capacity corresponding to the number of characters from (the standard group selected for the device to be transferred is selected for this device. As can be seen, the accumulators 2 provide for grouping information according to its belonging to the same message source and thereby increase the efficiency of message transmission .

Drives 2 are sequentially polled by read permission signals alternately on read resolution buses 13. If there are 2 symbols in the accumulator corresponding to the standard group to be transferred, this group of symbols is output from accumulator 2 to bus 14.

The filling of the drives 2 is controlled by blocks 8.

In the polling mode of accumulator 1, when filling at least one of the accumulators 2 at the output of the element OR NOT 9, a signal is generated that prohibits the receipt of polling signals from the bus 12 on the polling input of the accumulator 1 through the element 5.

Normal operation of the described device is possible under the condition that the sampling frequency of accumulator 1 will be significantly higher than the frequency of receipt of readout signals to accumulators 2.

Claims (2)

1. USSR Author's Certificate No. 371613, cl. G 11 C 9 / OO, 1971. 2. The patent of Germany No. 1268 652, cl. G 11 C 9 / OO, 1968 (prototype ;.