SU1048497A1 - Device for receiving television signals - Google Patents

Abstract

A DEVICE FOR RECEIVING TELESIGNALS, containing an information signal output unit, a control signal generating unit, a control panel, in each individual cell. - the first trigger switch-. NIN, the outputs of which are connected respectively to the first inputs of the first and second elements AND, the first and second elements OR, a television signal amplifier, the first output of the control signal generation unit is connected to the first input of the first switching trigger of each individual cell, which differs. This is due to the fact that, in order to increase the reliability of telesigils, the second and third switching triggers, the first and second pulse formers, the delay element, the third and fourth And elements, the inequality element, to the first input of which is connected, are introduced into each individual cell. the output of the second switching trigger, the outputs of the first and second elements I are connected respectively to the first and second inputs of the second switching trigger; the first output of the first switching trigger is connected to the second Jinput of the nonequivalent element the first input of the third element I and the input of the first pulse generator, the output of which is connected to the first input of the third switching trigger, the first output of which is connected to the second input of the third switching trigger through the delay element, second (Lead the output is connected to the third input of the second switching trigger, the output of the second pulse generator is connected to the third input of the third switching trigger, the fourth input of which is connected to zero potential; the output of the inequality element is connected the first inputs of the first element OR and the second input 4 00 4 of the third element AND, the output of which is connected to the first input of the second element of the SB, the output of which is connected to the TV signal amplifier, the output of the first element OR connected to the first input of the fourth element AND, the output of which is connected to the second input the second element OR, the outputs of the information signal output unit are connected respectively to the second input of the first switching trigger of each individual cell, the second output of the control signal generating unit n second inputs with the first and second members and each

Description

the individual cells, the third and fourth outputs of the signal conditioning unit are connected respectively to the second inputs of the fourth element. Both and the first element OR of each individual cell, the outputs of the control panel are connected with the input of the second pulse generator and the fourth input of the second trigger switch of each individual cell.

The invention relates to telemechanic systems, in which for receiving and reproducing the states of the object of tele-alarm, the information signaling unit and the control signal generation unit, common to all objects, are used.

Jointing devices are known that contain a common information signal output unit and a control signal generating unit, as well as individual cells for each object, including triggers, elements of unequalities. AND, OR ij and zj. In these devices, there is no possibility of a general acknowledgment of the inconsistency between newly received and stored signals, besides, an alarm signaling with a pulsing glow of the indicator is formed not only in emergency situations - when switching the remote signaling object without giving a control command, but also when the machine is in good condition from the moment the command begins to be transmitted until the response of the television signal. This reduces the reliability of the information and information, as the operator, giving commands ,; should, in a manner identical to that of reproduction, separate the normal mode of operation, cases of failure to execute a command, and spontaneous switching of the alarm system.

The closest in technical essence to the invention is a device for receiving topesignals, which contains an information signaling unit, and a control signal generation unit, in each individual cell — the first switching trigger of which is connected to the first inputs of the first and second elements, respectively. And, the first and second elements of ShP1, a television signal amplifier, the first output of the control signal generating unit are connected by Q to the first input of the first trigger of switching the individual cell Also, the linii and AND elements and in each individual cell are the acknowledgment keys, the AND and OR malicious signals, and the tv signal amplifier. .

In such a device, it is possible to confirm, in general, for all objects, the inconsistency of the incoming and stored body signals {e.

However, as in the above analogues, the reliability of the playback of the TV signals and the information content are reduced due to the increase in the individual pulsating signals in both the emergency and normal conditions.

Lel of the invention - on the reliability of television signals, in particular, the provision of blocking the issuance of indiscriminate pulsating signals in normal conditions - in the absence of switching objects without giving control commands, as well as refusals of execution, commands given,

Specified: the goal is achieved by introducing the second and third switching triggers, the first and second pulse shapers, the delay element, the third and fourth And elements, the inequality element, to the first input of which the output of the second switching trigger is connected to each individual cell, the outputs of the first ti of the second elements And are connected respectively to the first and second inputs of the second switching trigger, the first output of the first switching trigger is connected to the second input of the element the inequalities, the first input of the third element And and the input of the first pulse generator, the output of which is connected to the first input of the third switching trigger, the first output of which through the delay element is connected to the second input of the third switching trigger, the second output connected to the third input of the second switching trigger, the output of the second pulse generator is connected to the third input of the third switching trigger, the quarter A input of which is connected to zero potential, the output of the unequal element of the connection with the first inputs of the first element 1 SHI and the second input of the third element AND, the output of which is connected to the first input of the second element OR, whose output is connected to the television signal amplifier, the output of the first IS element is connected to the first input of the fourth element AND whose output is connected to the second the input of the second LIP element, the outputs of the information signal output unit noA are connected to the second input of the first switching trigger of each individual cell, the second output of the control signal generating unit is connected to the second nepisor input o and the second element AND the case of the izdiaidal cell, the third and quarter inputs of the signal conditioning control unit are connected respectively to the second inputs of the fourth: 9th element AND and the first element OR of each individual cell, the outputs of the control panel for the control panel are connected to the inputs i of the second pulse and quarter signal the input of the second trigger for switching each individual cell. ; The drawing shows a device for receiving television signals. The device for receiving television signals contains, for n command objects, keys 1 ... n placed in control panel 1, unit 2 for issuing information signals 1 ... n and unit 3 for generating control signals with outputs to which signals from the source gating pulses from the handshake button, from the periodic signal generator and from the control button, as well as n individual cells 4, each of which includes the first 5, second 6 and third 7 switching triggers, elements 8-11, unequalities element 13, needles 13 and 1 4, a television signal amplifier 15 (object states),, the first 16 and second 17 pulse shapers, the delay element 18. In each individual cell, the outputs of the trigger 5 are connected respectively to the first inputs of the elements 8 and 9. The first output of the block 3 is connected to the first input of the trigger 5, the output of the trigger 6 is connected to the first input of the element 12, the outputs of the elements 8 and 9 are connected respectively to the first and the second inputs of the trigger 6, the first output of the trigger 5 is connected to the second input of the element 12, the first input of the element H 10 and to the input of the imager 17 whose output is connected to the first input of the trigger 7, the first output of which through the element 18 is connected to the second input of the trigger and 7, a second taken the analysis is connected to the third input of flip-flop 6. The output of the shaper 17 is connected to the third input of the trigger 7, a fourth input coupled to a null poten1r1alom. The output of element 12 is connected to the first input of the first element OR 13 and the second input of the third element AND 10, the output of which is connected to the first input of the second element OR 14, the output of which is connected to the amplifier 15. The output of the first element OR 13 is connected to the first input of the fourth element .AND P, the output of which is connected to the second input of the second element. OR 14. The first outputs of block 1 are connected respectively to the second input of the first trig. pen 5 of each individual cell, the second output of block 3 is connected to the second inputs of the elements And 8 and 9 of each individual cell, the third and the fourth, the vertical outputs of block 3 are connected respectively to the second inputs of the even, vertical element And 10 and the first element of the 1 13 each individual cell. The outputs of the control panel 1 are connected to the input of the second shaper 16 and the fourth input of the trigger 6 in each individual cell. 1 The device operates as follows. When information arrives, block 2 at the outputs 1 ... n forms a parallel code corresponding to the new state of the television signaling, and then block 3 generates a strobe pulse at output 1, which allows the writing of the parallel code to the first triggers 5 - all individual cells 4. Second trigger 6 retains the previously set value. If the newly received TV signal does not correspond to the stored signal, signal 1 is formed at the output of the element of unequal values 12. Signal 1 arriving at the inverting 5 input of the element and Yu (indicated by a circle in the drawing) blocks its operation; at the same time, it allows the operation of the AND element 1I, since its input is given to signal 1 from element 12 through the element OR 13. To another input P there is a periodic pulsating signal from the output of block 3, which passes to output I1 and through tinn 14 element is fed to the amplifier J5. As a result, the indicator connected to the OUTPUT amplifier and not shown in the drawing is switched to the pulsating mode. The pulsating luminescence is removed from the block signal from the block output signal. The block signal is generated by the button acknowledged by the operator. When the acknowledgment signal is applied through the elements 8 and 9, the state of the first trigger 5 is copied to the second trigger 6. Because now, the inputs of element 12, the signals of the same level from 5 and 6 are consumed. At its output, signal O is generated. The operation of element AND II is blocked, but the operation of element AND 10 is permitted. The signal of element And 10 corresponds to the signal at output 1 of trigger 5, i.e. reattach TV signal. If signal 1 is received, a signal is output to the amplifier providing a constant, equal indicator light — otherwise the indicator goes out. To control the functionality of the elements, a signal from the control button is used, coming from the output of block 3. A control signal is generated by a command from the operator. For individual cells 4, from intensifiers 15 of which, by the time the control signal was applied, the indicators already gave signals that ensured their luminescence, the mode of operation does not change. In the remaining cells, the supplied control signal passes to element I1, causing a pulsating glow of the indicator. Thus, during coitrol, all indicators should be transferred to a smooth, pulsating glow, a faulty circuit is identified by the quenched indicator. The device, when it receives television signals that are different from the stored ones, provides a pulsating luminescence of the indicators, and the extinction or transfer of 7 indicators to an even luminescence when a common signal is sent ... to read. Consider the operation of the device when giving the control command. A command, associated with any change in the position of the command-quantizing key, results in the formation of a pulse at the output of the driver 16, by which the third trigger 7 is set to 1. For example, the two-input unequality elements can be used as pulse shapers 16 and 17 the input of which the excitation signal from the command-acknowledge key is fed directly, and to the other via an integrating RC-chain. As a result, when the Bcf excitation signal changes from 1 to O, or. C to 1, a pulse signal is formed at the output of the inequality element, the duration of which is determined by the parameters R and C. The time delay introduced by the element 18 and selected taking into account the possible delay of the television signal in response to a given command (control command supply chains are not shown in the drawing), trigger 7 returns to state O. Element 18 may, for example, be performed as an RC chain. The installation of the trigger 7 in O by the signal from element 18 should be considered as a failure to execute the day command. At the time of installation of the trigger 7 in O, the signal 1 I4 is fed to one input of the trigger 6, which at the same time perceives and remembers the signal fed to its other input - the signal from the command-acknowledge key. This introduces a mismatch between the state of trigger 5, which stores the previous state of the object of alarm, and the trigger 6, which is set to the state that the object must go to after the execution of the given command. As a result, when the execution of a command fails, the mode of operation of the device turns out to be identical to that considered for the case of receiving a new television signal without giving it a control command. If, prior to the installation of the trigger 7 in O, the signal from element 18 will receive a new television signal, i.e. the state of trigger 5 will change, a pulse will be generated at the output 17. With this pulse, the first input trigger 7 is set to O, because the fourth input of the constant signal O is applied. As a result, the trigger 5 is set in accordance with the newly received television signal, and trigger 6 is in accordance with the position of the command-acknowledge key. In the normal execution of the command given, the state of the flip-flops 5 and 6 should be coBhana.itbt and, as a result, the pulsing light of the indicator is eliminated - it lights up steadily or goes out depending on the new state of the trigger 5. Thus, the proposed device provides a comparison with the prototype, an increase in the reliability of reproducible television signals, since the indicator is switched to the pulsating glow mode only when the position of the television signaling object is changed without giving a control command to it; d also when the execution of a given command fails. Blocking the output of a pulsating signal during normal operation of the device allows the operator to issue a new control command until a response television signal is received, indicating that the previously issued command has been executed, thus enhancing the informative and.

Claims (1)

DEVICE FOR RECEIVING TELESIGNALS, containing a block for issuing information signals, a block for generating control signals, a control panel, in each individual cell, a first switching trigger, the outputs of which are connected respectively to the first inputs of the first and second AND elements, the first and second OR elements, the television signal amplifier, the first output of the control signal generation unit is connected to the first input of the first switching trigger of each individual cell, distinguish-. Furthermore, in order to increase the reliability of television signals, the second and third switching triggers, the first and second pulse shapers, the delay element, the third and fourth AND elements, the element of ambiguity, to the first input of which are introduced into each individual cell the output of the second switching trigger is connected, the outputs of the first and second elements And are connected respectively to the first and second inputs of the second switching trigger, the first output of the first switching trigger is connected to the second output of the element the first input of the third AND element and the input of the first pulse shaper, the output of which is connected to the first input of the third switching trigger, the first output of which is connected through the delay element to the second input of the third switching trigger, the second output is connected to the third input of the second switching trigger, the output, of the second the pulse shaper is connected to the third input of the third trigger trigger, the fourth input of which is connected to zero potential; the output of the disambiguation element is connected to the first the strokes of the first OR element and the second input of the third AND element, the output of which is connected to the first input of the second OR element, the output of which is connected to the TV signal amplifier, the output of the first OR element is connected to the first input of the fourth AND element, the output of which is connected to the second input of the second OR element, the outputs of the information signal generating unit are connected respectively to the second input of the first switching trigger of each individual cell, the second output of the control signal generating unit is connected to the second input by the first and second AND elements of each individual cell, the third and fourth outputs of the signal forming unit are connected respectively to the second inputs of the fourth AND element and the first OR element of each individual cell, the control panel outputs are connected to the input of the second pulse shaper and the fourth input of the second switching trigger of each individual cell.