SU690656A1 - Device for selective call - Google Patents

Description

(54) DEVICE SELECTIVE CALL

The invention relates to radio and can be used in devices for selective calling of network subscribers. A selective ryz device containing serially connected synchronous pulse generator to the encoder, control unit, first comparison unit, first and second integrators, signal converter and call indication unit is known, the first input of the first comparison unit connected to the output of the signal converter and the output of the first comparison unit connected to the input of the first integrator, the output of which is connected to the first input of the call indication unit 1. However, the known device does not allow production of ovnosti subscribers to establish a radio link. The purpose of the invention is to reduce the time for making a call by ensuring the operational control of the readiness of network subscribers to establish radio communications. For a selective call device containing a serially connected clock generator and an encoder / control unit, the first comparison unit, the first to the second integrator, the signal converter and the call indication unit, the first input of the first comparison unit is connected to the output 6 of the signal converter, the output of the first the comparison unit is connected to the input of the first integrator / whose output is connected to the first input of the call indication unit, a second comparison unit is introduced, delay element, executive unit, op unit voltages, a subscriber state indication block and (n-1) AND elements (where n is the total number of subscribers), the first and second outputs of the encoder are connected respectively to the first and second inputs of the equalizer unit, the first output of which is connected to the converter input the second output of the control unit is connected to the second output of the first comparison unit, and the first input of the second comparison unit is connected to the output of the signal converter, the second input of the second comparison unit is connected to the third output of the control unit, the third input to The second is connected to the output of the execution unit, the input of which is connected to the output of the delay element, the input of which is connected to the output of the BtoporO comparison unit through the second integrator, the second input of the display module of the vyrva, the control input of the reference voltage block and the first inputs of the I elements, the second inputs of which are connected with the corresponding outputs of the voltage block, and the outputs of the And elements are connected to the corresponding inputs of the subscriber state indication unit, and the input of the clock generator is connected to the output of the photoelectret signal.

The drawing shows the structural electrical circuit of the proposed device.

the selective call device contains a signal converter 1, a sync pulse generator 2, an encoder 3, a control unit 4, the first and second comparison blocks 5.6, the first and second integrators 7.8, call indication unit 9, delay element 10, a GenshlTlIN block 11, elements 12, reference voltage block 13, and if subscriber state indication block. , ... ". .... . .. :; ::.;

The ycTpolftcTBo selective call works as follows.

The device operates as in the reception mode, in the mode. The operation modes of the device are controlled by the control unit 4,:

In transmit mode, the code sequences of rectangular impulses. The coils formed by the encoder 3, through the control unit 4, are fed to the signal converter 1, the output of which is in the form of a sequence of two tone frequencies (one jis which ISEJir corresponds to zero sending, G and the second one) is fed to the subscribers.

In the reception mode, the signals from the subscriber's bypass in the form of sequences of two major frequencies are fed to the input of signal converter 1. Signal converter 1 forms rectangular pulses from them. From the impulses, in accordance with the received information, certain sequences are generated, which are fed to the second source of the comparison blocks 5.6 and to the clock generator 2 days; sync it. The sync (d) output pulses from the output of the clock 2 generator are fed to the input; the coder Z. to both the firstproduct of the info info page 1 1 13 its register. Pulse sequence / format; miriuvannye in the encoder 3, with his first and second VO {o; TsOv through the control unit 4 is fed to the first inputs of the comparison units 5.6, respectively. Moreover, from the first output of the encoder 3, a sequence of pulses, corresponding to the code of the subscriber, is received in the comparison block 5, and from the second output of it, in 5, the comparison block 6 receives a sequence of pulses corresponding to the control signal. Comparison block 5 compares the received code with the code corresponding to

0 this subscriber. In the case of continuous coincidence of codes for a period of time equal to the constant time of the integrator 7, from the output of the integrator 7 is fed to

 call indication block 9 about call

this subscriber.

Comparison unit 6 compares the received code with the control signal code. In the case of continuous coincidence of codes within a segment

0 time equal to the constant time of the integrator 8, from the output of the integrator 8, a signal is fed to the input of the block of reference voltages 13, to the first inputs of the elements I 12 and to the input of the call indication block 9. In addition,

the delay element 10 signal is applied to the Executive unit 11, the signal of which is supplied to the control unit 4, and provides translation device

0 into the transmission mode, transmission over the radio network of the response control signal and reverse transfer of the device to the reception mode. The time by which the signal of the integrator 8 is delayed in the unit.

5 delays 10, each of the network subscribers is different and is chosen so that the stream of acknowledging Signals from all subscribers is not overlapping in time.

The signal of the integrator 8, entering the block of the reference voltage 13, provides alternate supply of the reference voltage across the output buses of the block of the Reference voltage 13 to the second inputs of the And 12 elements. The number of elements

5 and 12 and the number of output buses of the block of reference voltages 13 is equal to (n-l) (where n is the number of subscribers in the network). The supply of reference voltages to the various buses of the reference voltage block 13 is carried out with different delays. Moreover, for each bus, this delay is equal to the delay in issuing a confirmation signal by one of the network subscribers. Thus, if a user is ready to establish a radio connection, then it confirms the signal of the act simultaneously with the reference voltage on the corresponding element I 12, causing the operation of this element - :: - :::%%; -.

Menta I 12 and his signal in. - ". I ,,,;

.. block yndyk yi state abschetov 7 14. If all subscribers of the network are ready to work, then there is an alternate v sraba.tyvanie elekuntov 12 and the issuance

Claims (1)

5. Corresponding signals to the subscriber state indication unit 14. At the same time, all network subscribers receive information about which subscribers are ready for work and which ones are not. The initial control signal is received by all subscribers on the network at the same time. In this case, the signal coming from the output of the integrator 8 to the call indication unit 9 warns the operator about the start of control. If at this moment operational information is transmitted (received) to any of the subscribers or for any other reason it is undesirable that the subscriber worked on the transmission, then the operator of such subscriber in control unit 4 may block the signal coming from the execution unit 11, thereby preventing the automatic transfer of the device into transmission modes. The positive effect, created by the proposed device, is to ensure episodic monitoring of the readiness to establish radio communications of all network subscribers, which allows BO3NK: KHOCT16 to establish radio communication with a subscriber in a timely manner and eliminate the loss of time to send him a selective call .: V Claims of the invention A selective call device comprising a series-connected clock generator and an iphrator, a control unit, a first comparison unit, a first and a second integrator, a transducer A signal unit and a call indication unit, the first input of the first comparator unit is connected to the output of the signal converter, the output of the first comparator unit is connected to the input of the first integrator / output of which is connected to the 1st First input of the call indication unit, characterized in that it is reduced. call time by providing operational control, the second comparison block, delay element, executive block, reference voltage block, subscriber state indication block and (n-1 AND elements (where n is the total number of subscribers) are entered, the first and The second outputs of the encoder are connected respectively to the first and second inputs of the control unit, the first output of which is connected to the input of the signal converter, the second output of the control unit is connected to the second input of the first block, the comparison, and the first input of the second block The second input of the second comparison unit is connected to the third output of the control unit, the third input of which is connected to the output of the execution unit, the input of which is connected to the output of the delay unit 1ta, the input of which is connected to the output of the second comparison unit through the second; , the second input of the call indication unit, the control input of the reference voltage block and the first inputs of the And elements, the second inputs of which are connected to the corresponding outputs of the voltage reference block, and you ode elements and sub klyucheky to respective inputs indykadii block state subscribers ,, wherein the clock input is connected to the generator with you} (Odom lreovrazovetel signal ..-. Sources of information taken by the Attention in the examination 1. Application 2409146 / 18-09, cl. H 04 O 5/00, 1976, on which the decision was made on the vidache copyright certificate. V .c. BEET:  . l ii-l: f lj:; ::. t-rr.JS: