SU1336005A1 - Multichannel inquiry service device with changeable priority codes - Google Patents

Abstract

The invention relates to computing and can be used in message switching centers of collective use systems in the collection and processing of incoming information. The purpose of the invention is to increase speed. The device contains two triggers, two delay elements, two AND elements, an OR-NOT element, two OR elements, and in each channel — a counter, a decoder, an AND-NOT element, a trigger, a group of NOT elements, and two I. elements. discipline of servicing requests and combining the preparation for servicing the next request with the process of information exchange between the selected source and the servicing device. 1 il. with with

Description

The invention relates to computing and can be used in message switching centers of collective use systems in the collection and processing of incoming information.

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

The drawing shows a block diagram of the device.

The device contains channels 1, the element Trigger 16 is set to one state by a signal at input 21 and is reset to the zero state by a service start signal of the selected request.

In the initial state, the triggers of 3 all channels, the counters of 6 channels and the triggers 15 and 16 are in the zero state, while registering incoming requests in the triggers of 3 channels through the open AND-HE elements 2, as well as

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the clock pulse through the closed in this case, the elements And 10 and 14.

If it is necessary to access the servicing device, the sources place requests in the form of potential signals on the inputs 18, transferring the corresponding trigger 3 to one state. Priority codes are written to the counters 6 of each channel. Unit potentials with

You do NOT have 2 channels, triggers of 3 channels, 10 priorities in counters 6 through an open group of elements AND 4 channels, elements AND groups of 4 elements AND, and prohibiting passages 5 channels, counters 6 channels, decryptors 7 channels, elements 8 channels, elements OR 9, AND 10, OR 11 and OR-NOT 12, delay element 13, element AND 14, triggers 15 and 16, delay element 17, device request inputs 18, device priority groups 19 device priority codes, 20 clock pulses input devices, device service readiness input 21, output 22

device interruptions, informational 20 outputs of the corresponding triggers 3 channels-devices 23 outputs. The device is prepared for operation as follows. the corresponding channel decoder for its 3 channel Triggers memorize requests to the control input. If there is at least one that needs to be serviced in every single request, a signal appears at the polling cycle of the device. 22 devices that go to the counters of 6 channels fix codes 25 serving device and also removes priorities recorded initially by the serving device by groups of inputs 19, thereby establishing the sequence (discipline) of serving the sources of the request in the queue. They also record the source priority codes in the process of the polling cycle started when pulses from the output of the E-5 element arrive at their counting inputs. In this case, the priority codes 30

The installation signal in “About trigger 15, i.e. trigger 15 can be set to "1 when a signal is received at input 21. Trigger 16 can also be set to one state, since at its zero input there is a single potential from the output of the OR-NOT 12 element.

If the servicing device is ready to begin servicing, it responds by sending signal pulses to input 21, triggers 15 and 16 are transferred to one state and clock pulses through the opened AND 10 element and the corresponding AND elements of 5 channels that have requests in this poll cycle are received 6 channel counters. Installation of units of all sources increases or decreases in compliance with the maintenance discipline for this survey cycle.

The decoders 7 on the information inputs are configured only on the code of the highest priority. The highest priority corresponds to the smallest code (for subtracting

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If the servicing device is ready to begin servicing, it responds by sending signal pulses to input 21, triggers 15 and 16 are transferred to one state and clock pulses through the opened AND 10 element and the corresponding AND elements of 5 channels that have requests in this poll cycle are received 6 channel counters. The installation in unit meters 6) or the largest code (with a sum of 40 trigger states 15 leads to blocking meters 6).

Element AND 10 is a gate for the device clock frequency when performing the preparatory operation for servicing the next request, followed by the priority until the completion of the preparation operation, which is fixed by the OR 11 element.

The element OR-NO 12 is designed to form a start signal for the selected request, which sets the trigger 16 to the zero state.

A trigger 15, designed to delimit device polling cycles, is set to one by the first signal at input 21 and is reset to 45.

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registration of newly received requests and possible changes in priority codes at the installation inputs of counters 6, i.e. The device has started servicing currently registered requests with their priority codes (the polling cycle has begun).

When, with the arrival of the first clock pulse on the counting input of counter 6, its contents become equal to the higher priority code and there is a potential request signal at the control input of the decoder 7, the polling clock pulse appears through the currently open element U 8 at the same output 23, begin the process of sharing information

the left state when terminating the service-between the source and the server servicing the last request in each cycling event. The same questionnaire polling clock, i.e. at the appearance of a logical-pulse signal through an element OR NOT 12 and an element

A low zero at the output of the delayed element OR 9.17 sets the trigger 16 to the nuTrigger 16, is set to one state by a signal at input 21 and is reset to the zero state by the service start signal of the selected request.

In the initial state, the triggers of 3 all channels, the counters of 6 channels and the triggers 15 and 16 are in the zero state, while registering incoming requests in the triggers of 3 channels through the open AND-HE elements 2, as well as

priorities in the counters 6 through the open groups of 4 elements AND and prohibit the passage

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the clock pulse through the closed in this case, the elements And 10 and 14.

If it is necessary to access the servicing device, the sources place requests in the form of potential signals on the inputs 18, transferring the corresponding trigger 3 to one state. Priority codes are written to the counters 6 of each channel. Unit potentials with

10 priorities in meters 6 through open groups of 4 elements AND and prohibit passage

The 20 outputs of the corresponding triggers 3 channels prepare the serving device for actuation, and also removes

The installation signal in “About trigger 15, i.e. trigger 15 can be set to "1 when a signal is received at input 21. Trigger 16 can also be set to one state, since at its zero input there is a single potential from the output of the OR-NOT 12 element.

If the servicing device is ready to begin servicing, it responds by sending signal pulses to input 21, triggers 15 and 16 are transferred to one state and clock pulses through the opened AND 10 element and the corresponding AND elements of 5 channels that have requests in this poll cycle are received 6 channel counters. Set to one

registration of newly received requests and possible changes in priority codes at the installation inputs of counters 6, i.e. The device has started servicing currently registered requests with their priority codes (the polling cycle has begun).

When, with the arrival of the first clock pulse on the counting input of counter 6, its contents become equal to the higher priority code and there is a potential request signal at the control input of the decoder 7, the polling clock pulse appears through the currently open element U 8 at the same output 23, begin the process of sharing information

between the source and the serving, the stopping state, which closes the element AND 14 for the passage of clock pulses.

Element AND 10 will remain open for the passage of clock pulses until the end of the exchange of information of the lowest priority information source whose service request was registered in this polling cycle, since the trigger 15 will be set to zero state with zero potential output from the OR 9 element (all requests serviced). The selected source of information removes the potential request signal, which leads to the installation “On the corresponding trigger 3.

A distinctive feature of the proposed device is that at the moment of information exchange of an already selected source of information, the change in the contents of counters 6 continues until a reached request for sources of information, which will occur similarly to serving the first request.

The polling cycle will end with servicing the lowest priority information source in this polling cycle.

Claims (1)

Invention Formula ten A multichannel device for servicing requests with interchangeable priority codes containing the first trigger, two OR elements, the first AND element and the first delay element, channels, and in each channel: a counter and a decoder, with the group J5 of the decoder inputs of each channel connected to the group the outputs of the counter of the channel of the same name, the outputs of the channel decoders are connected to the inputs of the first OR element, the output of the second OR element is the interrupt output of the device, none of them have the code value of the senior 20 the first input of the first element I is connected to the priority. with a single output of the first trigger. Preparing the next request with a more single input of which is connected to the input with low priority than the request that started the device service readiness, the second is already the exchange of information, the first element I is connected to the input as follows. The device’s pulse pulses differing in clock frequency that, in order to increase the fast element AND 10 to the second inputs of the channel of the device, it contains the second elements AND 5. Those elements AND 5, the trigger, the second delay element, the second The first ones will be opened by their first input element AND and element, and in each ladies (a request from the corresponding channel is registered - an AND – NE element, a trigger, a grouping source of information on the channel of AND elements and two AND elements, and nn trigger 3), pass the clock inputs of the elements AND groups of each Channels are a group of inputs of device priority codes, the second inputs of the elements And groups of each channel are combined and connected to the inverse output of the first trigger, the installation input in the "About which is connected to the output of the device interrupt, the input clock of the device through the first delay element And, the second, third and fourth inputs of the polling cycle will occur until 40 of them are connected to the direct one, respectively, until the more senior of them reaches the output of the first element OR, from one - its high code. When one output of the first and second triggers is reached, the single potential, that is, the output potential of the first decoder 7 with the third input of the first element 7, appears from the counters b of the code of the senior one and the inverse of the first element 7 the output of which is connected to the first one, the passage through the OR element, closed by the inputs of the first AND elements, each element AND 10 has its own zero potential, the second inputs of which are connected to the dial from the inverse output of the element by a single OR output of the channel 11. la, y Since the process of exchanging information of its channel and the corresponding input is second between the selected source of information CQ of the OR element, the inputs of the requests are connected to the first inputs by the device of the occupancy usually longer than the durations AND-NOT and reset inputs trigger the 10-20 clock pulses of the device corresponding to the channel, the second inputs can be said with great reliability, the AND-NOT cops of each channel combine to prepare the next request for the service. s and connected to the inverse output The life will be completed before the completion of the first 55 trigger, the output of the NAND element of this exchange. With the arrival of the next signal, each channel is connected to a single input to the input 21 of the service readiness house of the trigger of its channel, the outputs of the element device will start to prepare the prepares And the groups of each channel are connected to pulses to the inputs of the corresponding channel counters 6. Thus, the counters 6 in the process of already started the exchange of information between the selected information source and the server continue to change their state (increase or decrease their content with the arrival of each clock pulse). The accumulation or reduction of the contents of the counters 6 that have queries in this 35 queried request for sources of information, which will be similar to the service of the first request. The polling cycle will end with servicing the lowest priority information source in this polling cycle. Invention Formula information inputs of the counter of the same name channel, the counting input of which is connected to the output of the first element AND channel, the output of the channel decoder is connected to the first input of the second element AND of its channel, the second inputs of the second elements AND of each channel are combined and connected to the output of the second element I, the single input The second trigger is connected to the device service readiness input, the zero input of the second trigger is connected to the output of the second delay element, the input of which is connected to the output of the OR-NOT element, whose inputs are connected to the outputs of the second AND elements and the corresponding information outputs of the device. Request Compiled by M. Kudr Shev Editor N. GereshiTehred I. VeresKorrektor M. Demchik Order 3803/44 Circulation 672 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4