SU1427373A1 - Subscribers interface - Google Patents

Abstract

The invention relates to automation and computing and can be used in communication devices for input-output information with the ability to control the reliability of the exchange without additional connection of external devices. The aim of the invention is to increase the reliability of the exchange. The device contains two groups of elements AND, a group of triggers, an element AND, an element 2И-ШШ, a group of selectors, an element NOT. 2 Il.

Description

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The invention relates to the field of automation and computer technology and can be used in the transmission of information between external devices that have bidirectional information highways, as well as when it is necessary to control the fact of transmission without needing additional external devices.

The aim of the invention is to increase the reliability of the exchange.

Figure 1 presents the block diagram of the device; figure 2 - the timing diagram of his work.

The device contains groups of 1.2 elements AND, group 3 triggers, element AND 4, element 2I-OR 5, subscribers 6, 7, group 8 selectors, element NOT 9 ..

The device may have several modes of operation.

I. Record information in triggers

3 groups from the first subscriber information bus. The information buses of the first subscriber expose data and the device enables the input signal to enable the signal by which the selectors 8 can pass information from the first subscriber to the information inputs of the trigger 3.

Then, from the first input of the record, the sync inputs of the triggers 3 receive an impulse, according to which, the information is entered into the triggers 3.

II.Record information to triggers 3 from the information bus of the second subscriber. The information bus of the second subscriber is exposed to the information of 1SCH, and a pulse enable signal is sent to the second recording input of the device. At the control inputs of the selectors 8, there is a set zero signal, according to which information from the second subscriber can arrive at the information inputs of the triggers 3.

At the second input, read the device into it. time set to zero. Therefore, the pulse signal at the second recording input to the sync inputs of the triggers 3, recording information.

III. Reading the information by the second subscriber from the triggers 3. In this case, the device permission input receives a signal that sends an information through element 4, if there is a permitting signal on the first read bus, through a group of 2 elements, and sinks to the information subscriber's second subscriber.

IV, reading information first

by the subscriber from the flip-flops 3. In this case, the second input of the reading receives a signal on which information through the elements And 2 can flow to the information buses of the first subscriber.

By combining modes I and Sch or II and IV, you can transfer information from one subscriber to another, and by combining modes I and IV or II and III, you can record and read information for the first and second subscribers.

Claims (1)

Invention Formula A device for connecting subscribers, containing two groups of AND elements, a trigger group, an AND element, an II-OR element, the first and second inputs of which are the enable input and the first recording input of the device, and the output of the II-OR element are connected to the inputs of the trigger group triggers The outputs of which are connected to the first inputs of the corresponding elements of the first and second groups, the outputs of the elements of the first and second groups are the outputs of the device for connection, respectively, to the information lines of the first and second subscribers, and The first input of the element I is the first input of the device, characterized in that, in order to increase the reliability of the exchange, a group of selectors and an element NOT are entered into the device, the output of which is connected to the third input of element 2I-OR, the fourth input of which is the second input of the device, the input element is NOT the second input of the device, which is also connected to the second inputs of the elements of the first group, the output of the element AND is connected to the second inputs of the elements of the second group, the outputs of the group selectors are connected respectively with the information inputs of the group triggers, and the outputs of the elements of the first and second, groups are connected, respectively; first and second information inputs of the group selectors whose control inputs are combined and connected to the first input element 2 and-OR and the second input element And, the output of which is connected to the second inputs of elements AND of the second group. fmeñueI Reading Raeere-  R Record I descriptions R jns with l t 1 I-12 & & a (to : uh