Device for controlling synchronization channel

 

(57) Abstract:

Usage: in computing and can be used for control channel synchronization in digital systems. The inventive device comprises a channel triggers 1.1-1.N, shaper duration 2, the delay elements 3 and 5 members OR 6 and 7, elements, And 8 - 10, item 11, the trigger lock 12, the output channel bus 13.1 - 13.N, input initial setup 14 and output bus 15. 4 Il.

The invention relates to computer technology and can be used in digital systems for control channel synchronization system elements.

It is known device [1] to control the pulse sequence, which contains triggers, the elements And the element OR the counter. The device allows you to record the deviation of the time interval between pulses in larger or smaller from given value.

The disadvantage of this device is its odnogolosy.

Closest to the present invention is a device [2] to control the pulse generator containing two input bus, the first and second triggers, the first and second elements, OR first, second and third elements And odnosima the element And, a second input connected to the output of the second element OR the first and second inputs which are connected respectively with the direct outputs of the first and second triggers, zero inputs which are connected respectively to the outputs of the second and first elements, which are connected respectively to the clock inputs of the second and first triggers, inputs J which are connected respectively to the outputs of the second and first elements And inverted inputs of which are connected respectively with the first and second input buses, the K inputs of the first and second triggers are connected to a common bus, the output of the third element And is connected to the output bus, direct inputs of the first and second elements And are connected respectively with the first and second input buses, the outputs of the first and second elements And are connected respectively with the first and second inputs of the first element OR.

This device allows to detect loss of momentum in any of the monitored channels. However, the device has insufficient reliability of the control, because it does not allow to control the temporal correlation between the signals of different channels. In addition, the scope of application of the device is restricted by the control signals t the national trigger, two element OR the first element And whose output is connected to the output bus, the first input with the output of the first delay element (EZ), two channel input bus, inputs of n-2-channel trigger, trigger lock, second and third delay elements, the second and third elements And the shaper duration (FD), item NO, n-2 input channel bus, the bus is the initial installation, moreover, the S-input of each channel of the trigger group of the n-channel triggers connected to the corresponding input channel bus groups of n channel tyres and with the respective input group of the n inputs of the first element OR the output of which is connected to the first input of the second element And whose output is connected to the input of the first delay element and to the S input of the trigger lock, the output of which through the second delay element is connected to a second input of the second element And R is the input with the output of the second element OR and R-input of each channel of the trigger group of the n-channel triggers, the outputs are connected to respective inputs of the third element And whose output through the element is NOT connected to the second input of the first element And with the input of the shaper duration, the output of which through the third delay element is connected with the singing in the device additional items with the appropriate connections between them, as well as their relationships with the main elements that can boost the reliability of the device. This is achieved by controlling the duration of the time interval, in which the focus control signals, in accordance with the following principle. In addition, due to the multi-channel expands the scope of application of the device.

The device registers the signals for each of the monitored channels. The first of the received signal is used for signal conditioning of survey results of control. For this, he is delayed by a time determined by the maximum possible interval of variation of the controlled signals. If the device registers the receipt is not all controlled signals within a given time interval, the count of which is conducted from the first received signal, it generates at its output a fault signal. To register the receipt of signals from the respective channels are channel triggers. The second element, And the element does NOT form a direct and inverted signals of the results of the Desk. FD, third EZE and the second element OR generate a reset signal trigger lock and channel triggers. The trigger to block the signal and forming a polling signal control results. The parameters of the delay elements must be selected in the following way. The delay time of the signal on the first EZ must be equal to the interval of the maximum allowable variation of the controlled signals in time. The third parameter EZ exceed the delay on the first EZ to provide relief triggers after the survey results of control. The delay on the second EZE provides locking channel of survey results of control over time relative to the leading edge of the first channel signal that provides a passage for the exit of the third element And momentum necessary duration.

In Fig.1 shows the structure of the proposed device containing channel triggers 1.1-1.N, shaper duration (PD) 2, the delay elements (EZ) 3-5, elements, OR 6 and 7, elements, And 8-10, the item is NOT 11, the trigger lock 12, the input channel bus device 13.1-13.N, entry 14 initial setup of the device output bus 15.

In accordance with the scheme of Fig.1 R-inputs of the triggers 1.1-1.N the United S-input of each connected to one of the input channel tyres 13.1-13.N device and the input element OR 7. Exit EZ 5 is connected with the first input element And 9, the output of which is connected to the output 1i element 11 and FD 2, the output of which is connected via EZE 3 to the first input of the OR element 6, the second input is connected to the input device 14, and the output to the R-inputs of the triggers 1.1-1.N and R-input of the trigger 12. The output element 11 is connected to a second input element, And 9. Inverted output of the trigger 12 through EZE 4 connected to the first input element And 10, a second input connected to the output element OR 7, and the output from the S-input of the trigger 12 and the entrance EZE 5.

Installing the unit in its original state is performed by applying at its input 14 the initial setup of the signal passing through the second input element OR 6 on the R-inputs of the triggers 1.1-1.N and trigger 12, installs them in the zero state.

In Fig.2-4 presents the timing diagram of operation of the device. In this Fig.2 corresponds to the proper operation of the synchronization channel. In Fig.3 shows a diagram with the defective work connected with the output of one of the channel signals (channel trigger 13.N) is outside of the allowed time interval. In Fig.4 presents a malfunction associated with the absence of one of the channel signals (channel a trigger 13.N).

The signal received by any of the channel tyres 13.1-13.N device, installs in one state, accordingly, vlivaetsa allowing potential. In addition, the channel signal passes through the element OR 7 on the input 2 of item And 10. Because the trigger 12 is set to zero, the potential with its inverted output coming through EZE 4 to the first input element And 10, allows passage of the signal with the second input element And 10 on its output. The output signal from the element And 10 will be installed in the unit of the trigger 12. As a result, through the time set EZ 4 will be blocked on input 1 And 10. Thus, all subsequent channel signals through the element And 10 will not be as long until you reset the trigger 12. The output signal from the element And 10 through EZE 5 will be available at the input 1 of item 9. If by this time the device will be available all channel signals and all triggers 1.1-1.N will be in a single state, the signal from input 1 member And 9 at its output will not work, as the output element And 8 will allow potential, inverters on the element 11, and closes the item And 9 to input 2. An enable signal from the output element And 8, formed on the duration on PD 2 and detained on EZE 3, passes through the input 1 of the element OR 6 on the R-inputs of the triggers 1.1-1. N and trigger 12, resetting them to their original state. Then again opens e is reset flip-flops made after the survey item, And 9 input 1. If the receipt of the signal on input 1 member And 9 not all triggers 1.1-1.N is set to one state, the signal from input 1 member And 9 passes on his way out, forming a fault signal on an output bus 15 devices. This suggests that either one of the controlled signal has not been developed at all, or the time interval in which grouped all the monitored signal exceeds the permissible level.

DEVICE FOR CONTROLLING SYNCHRONIZATION CHANNEL containing two channel trigger, two element OR the first element And whose output is connected to the output bus, the first input with the output of the first delay elements, two input channel bus, characterized in that it introduced n-2 channel trigger, trigger lock, second and third delay elements, the second and third elements And the shaper duration, item NO, n-2 input channel bus, the bus is the initial installation, moreover, the S-input of each channel of the trigger group of the n-channel triggers are connected with the corresponding input channel bus groups of n channel tyres and with the respective input group of the n inputs of the first element OR the output of which is connected to the first input of the second element And the output dataelement delay is connected to a second input of the second element, And R-input with the output of the second element OR and R-input of each channel of the trigger group of the n-channel triggers whose outputs are connected to respective inputs of the third element And whose output through the element is NOT connected to the second input of the first element And the input of the shaper duration, the output of which through the third delay element connected to the first input of the second OR element, a second input connected to the bus initial installation.

 

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