SU924711A1 - Multichannel device for control of interrogation processing - Google Patents

Description

(B) A MULTI-CHANNEL DEVICE FOR CONTROLLING A QUALITY) PROCESSING A REQUESTS

one

The invention relates to computing and can be used in automated control systems.

A device for managing the order of processing requests is known, comprising counters, AND, OR, NOT elements, a comparison circuit, channels, and in each channel a register, a comparison circuit, AND elements, and a GP trigger.

The disadvantage of this device is a large amount of equipment.

The closest in technical essence and the achieved result to the proposed is a multichannel device for controlling the sequence of request processing, which contains channels, and in each channel there are four triggers, a switch and an element

And t2:

A disadvantage of the known device is a large amount of equipment.

The purpose of the invention is to reduce equipment.

The goal is achieved by the fact that a multichannel device for managing the request processing sequence containing channels, and in each channel is a trigger, a switch and an AND element, and the single inputs of the channel triggers are device request inputs, the element is NOT entered, and in each channel - an OR-NOT element, and the trigger output of each kaial is connected to the first input of the OR-NOT element of its channel, the second input of the OR-NOT element of each channel is connected to the first output of the switch of its channel, the second output of which The first output of the switch of the last channel is NOT connected to the first input of the switch of the first channel, the second inputs of the elements of the AND channels are connected to the clock input of the device, the outputs of the elements of the channel 39 are connected to zero the inputs of the channels of their channels, the first output to the mutator of each channel is connected to the first input of the switch of the subsequent channel, the second input of the switch of each channel is connected to the output of the OR-H element E your channel. The drawing shows the structural scheme of the proposed device. The device contains NOT 1 elements AND 2, triggers 3. device request inputs t, elements OR – BE 5, switches 6, device information outputs 7, device clock input 8, channels 9. The device works as follows. In the initial state, when the subscribers are not serviced, there is a single signal at the inverse outputs of the flip-flops 3, and a zero signal at the outputs of the elements OR-NOT 5. The zero signal from the output of the element OR-NOT 5 is fed to the second (control) input of the corresponding switch 6. The latter is intended to realize the switching of a positive signal, acting on its first input, to one of its two outputs, depending on the signal's polarity. entrance. If the control input of the switch 6 is affected by a zero signal, then a single signal passes to: the first output of the switch. At the same time at its second output will be present zero potential. If the control input of the specified switch 6 is acted upon by a single signal, the latter passes to the second output of the switch. Moreover, at its first output there will be a zero potential. With a zero signal at the first input of the switch 6, a zero signal is extracted at its both outputs, regardless of the polarity of the signal at the control input of this switch. Since in the initial state the control inputs of the switches 6 are affected by zero signals, single signals periodically appearing at their first inputs pass to the first outputs of the specified switches. Thus, a ring is formed in the initial state for the passage of pulse signals. This ring consists of series-connected switches 6 and a NOT 1 element. 4 The generation of pulses in this ring i is created because the element HE 1 periodically changes the polarity (level) of the signal. In this state, the device is in the waiting mode for incoming requests from subscribers and is ready for their maintenance. Requests from subscribers can come at different times, including at the same time. The request signal has a pulse form. The request signals arriving at the inputs C of the device switch the corresponding triggers 3 to one state. At the outputs of these triggers, the high potential level is changed to low, with the result that the OR-NOT elements of the 5 corresponding channels are prepared for operation. In the pause of the pulses generated in the ring, the second inputs of the OR-NOT 5 elements are given a zero signal, as a result of which the OR-NOT elements of the 5 channels that receive requests work and therefore the low potential level changes to a high level at their outputs. After a pause at the output of element E 1, a positive impulse appears, which propagates successively along the interrogation circuit to the switch Kai% 9, which received the subscriber from the corresponding subscriber and was first in the service circuit. The ring breaks, after which the generation of pulses stops, and a single signal is generated at the output of the NOT 1 element, which is switched to the second output of the switch 6 of the corresponding channel. This signal arrives at the output 7 of its channel and enables servicing of the corresponding. Subscriber. Since a zero signal acts on the first inputs of the switches 6 of the subsequent channels, a single signal is not allocated to their second outputs, despite the fact that requests were received by these channels, i.e. when servicing one of the subscribers, the device does not issue signals for servicing other subscribers. The end of the service of this subscriber occurs when a pulse arrives at the clock input 8 of the device. This pulse passes through the And 2 element of the corresponding channel and resets the trigger 3 of this channel to the zero state. At the output of the element OR NOT 5 corresponding

The channel's high potential level changes to low, with the result that a single signal present at the first input of the switch 6 that has completed servicing its subscriber is output to the first output of this switch. In this case, at the second output of the proposed switch, the high potential level changes to a low, i.e. the interrogation signal of the corresponding subscriber is removed.

A single signal from the first output of the switch 6, which completed the service of the corresponding subscriber, is fed to the first input of the switch 6 of the next channel and to the second input of the OR-NOT 5 element of its channel. The activation of this element at the second input is blocked until the service of the other subscribers from whom requests are received is serviced. Thus, after the completion of the first application service, the device is ready for the next service.

If the remaining channels of the device did not receive requests for servicing their subscribers, then a single signal from the first output of the switch 6 of the channel that completed the survey of its subscriber passes through all subsequent switches. This is due to the fact that the control inputs of the switches 6 of these channels will be affected by a zero signal. As a result, the ring is restored for the passage of single signals. The device comes to its original state and is ready for servicing any other requisitions, including a new application from a subscriber who has been served before.

If there is a ready signal (high potential) for servicing the corresponding subscriber at the control input of the switch 6 of the subsequent channel by the time a positive signal arrives at its first input, then a single signal is switched to the second output of the specified switch, and therefore also to output 7 of this channel i.e. This kanag will service its subscriber in the same way as described above.

When servicing by subsequent channels of their subscribers, polling of previous channels is blocked by

the corresponding elements OR NOT 5, since in this case the second inputs of these elements are given a single signal. At the end of the service of the request from the last subscriber, the passage of the pulse signals through the ring is restored, as a result of which the blocking from the second inputs of the OR-NOT 5 elements is removed. After that, the device is again ready to serve the next requests regardless of the time they arrived.

The application of the invention reduces the amount of equipment.

Claims (2)

Invention Formula A multichannel device for controlling the request processing sequence, which contains channels, and in each channel — a trigger, a switch, and an element, and the single inputs of the channel triggers are the device's request inputs, characterized in that, in order to reduce the equipment, it contains an element, and in each channel, an OR-NOT element, and the trigger output of each channel is connected to the first input of the OR-NOT element of its channel, the second input of the OR-NOT element of each channel is connected to the first output of the switch of its channel, the second output which is connected to the first input of the element AND of its channel and with the corresponding information output of the device, the first output of the switch of the last channel is NOT connected to the first input of the switch of the first channel via the element, the second inputs of the elements of the AND channels are connected to the clock input of the device, the outputs of the elements of the AND channels are connected to the zero inputs of the triggers of their channels; the first output of the switch of each channel is connected to the first input of the switch of the subsequent channel; the second input of the switch of each channel is connected to you Odom OR-NOT your channel. Sources of information taken into account in the examination 2. USSR author's certificate in W 286500, cl. G 06 F, 1980 (prototype). 1. USSR author's certificate K 4E (55B, class G06F 9/00, 1973.