RU1940U1 - DEVICE FOR IDENTIFICATION OF SUBSCRIBERS WHEN INSTALLING THE TELEPHONE CONNECTION - Google Patents

Abstract

SUBSTITUTION IDENTIFICATION DEVICE FOR ESTABLISHING TELEPHONE CONNECTION, comprising telephone sets of the calling and called subscribers, an identification message display unit and an identification message receiving unit, the telephone devices being connected through a communication channel by subscriber lines of the respective subscribers, and the identification message display unit is connected through an identification message receiving unit to the telephone of the called subscriber, characterized in that a signature reading unit is inserted into it, containing The main block of tone frequency generators, the board of conductive tracks and the electric pen are the pen, and the outputs of the block of tone frequency generators are connected respectively to the inputs of the board of conductive tracks, the tonal signals from which are read by the caller using an electric pen - pen connected to the subscriber line of the caller.

Description

DEVICE FOR IDENTIFICATION OF SUBSCRIBERS WHEN INSTALLING THE TELEPHONE CONNECTION

The utility model relates to telecommunications, namely to telephone communications, in particular to devices for preventing unwanted calls by identifying subscribers when establishing a telephone connection.

A device is known that identifies the calling subscriber, connected in the context of the subscriber line of the called subscriber of the telephone network, containing an automatic answer unit consisting of an automatic answer device, a decoder, a storage device and a subscriber line switch (see Pat. N2203614, Great Britain, MKI4 N04M1 / 66, 1988. Managing access to the telephone). The structure of calling telephones should contain a device for sending identification signals transmitted to the line (for example, by a multi-frequency method). When a call arrives at the called telephone, an automatic answer unit is turned on and a voice message is transmitted to the line with a request to press the send signal identification button. Upon receipt of this signal in the automatic response unit, the latter is compared with the permitted identification signal recorded in the storage device. If a match is found, the connection is transferred to the telephone of the called subscriber and the calling device is turned on. Otherwise, the connection is denied. However, this device provides a low reliability of identification of callers., Because does not carry out their personification. The fact that an authorized identification signal arrives at the automatic response unit does not exclude an accidental or malicious call from an unknown subscriber. Besides

of this, the device limits the delivery of information in the interests of the called subscriber to callers unfamiliar with the identification system, which reduces the information value of messages.

The subscriber identification device, one of which is the caller and the other the callee, is established as the prototype closest when establishing a telephone connection (see Pat. N2618281, France, MKI4 H04M1 / QO, 1988. Subscriber identification device, one of which is the calling one, and the other called, when a telephone connection is established), containing the telephone sets of the calling and called subscribers, blocks of display devices for identifying messages of the respective subscribers, terminal equipment subscriber subscribers, comprising a unit for reading an identification message from an electronic information card of a subscriber and a unit for receiving a message for identifying subscribers, moreover, telephone sets are connected via a telephone network communication channel by subscriber lines of respective subscribers, a unit for reading an identification message from an electronic information card of a corresponding subscriber is connected to a corresponding subscriber line, the input of the subscriber identification message receiving unit is connected to the telephone set party, yield - .s unit display message identification devices. The disadvantage of this device is the low reliability of identification of subscribers, despite their personification through information electronic cards. Unauthorized possession of an information electronic card allows any user (subscriber) of the telephone network, using the device considered, to use the capabilities of the identified person. -f Thus, the known devices for identifying (identifying) users of the telephone network provide low authentication accuracy. To increase the reliability of authentication of telephone network users, it is advisable to use the dynamic characteristics of its signature, which are distinguished by good stability, the falsification of which is very difficult.

The essence of the utility model is as follows. When establishing a telephone connection, the subscriber identification device contains the telephone sets of the calling 1 and called 2 subscribers, an identification message display unit 3 that displays the identification result of the calling subscriber by the identification message, an identification message receiving unit 4, which compares the identification messages of the callers with the dynamic characteristics registered subscribers of the called subscriber, and the signature reading unit 5. This block 5 also provides the conversion of the dynamic characteristics of the signature into a sequence of tonal frequency signals corresponding to the effective transmitted frequency band of the telephone network channels. It contains a block 6 of tone frequency generators, a board of 7 conductive tracks and an electric pen 3. Moreover, the telephone sets 1 (Ј) are connected via a telephone network communication channel by subscriber lines of the respective subscribers. In the signature reading unit 5, the outputs of the tonal frequency generator unit 5 are connected respectively to the inputs of the board 7 of conductive tracks, tonal signals from which are read by the caller by means of an electric pen 8 connected to the subscriber line of the caller. The input of the unit 4 for receiving the identification message is connected to the telephone set 2 of the called subscriber, and the output is connected to the input of the unit 3 for displaying the identification message co9 fO / 9tto -6.

Thus, this device for identifying subscribers when establishing a telephone connection can improve the accuracy of identification of the caller by transmitting the dynamic characteristics of his signature.

The structural diagram of the subscriber identification device when establishing a telephone connection is presented in figure 1.

When establishing a telephone connection, the subscriber identification device contains the telephone sets of the calling 1 and called 2 subscribers, an identification message display unit 3, an identification message receiving unit 4 and a signature reading unit 5, which comprises a tone frequency generator unit 6, a circuit board 7 of conductive tracks and an electric pen pen 8, and the telephone sets of the calling 1 and called 2 subscribers are connected through the communication channel by subscriber lines of the respective subscribers, the outputs of block 6 of the generators t of the natural frequencies of the signature reading unit 5 are connected respectively to the inputs of the board 7 of conductive tracks, the tonal signals from which are read by the caller by means of an electric pen 8 connected to the subscriber line of the caller, the input of the identification message receiving unit 4 is connected to the telephone set 2 of the called subscriber, and output - with the input of the identification message display unit 3.

The construction of the telephone set of the called 2 subscriber and the identification message display unit 3 is similar to the construction of the corresponding prototype blocks and is hereinafter considered known.

3/0 / 9f 0

-7lephone apparatus (SLT) of existing telephone communication networks, for the implementation of which any type of SL of an existing telephone communication network can be applied.

The telephone set 2 of the called subscriber provides, in addition to the known TA functions of the existing telephone communication networks (receiving and transmitting ringing and voice signals, sending address signals - dialing), access of the identification message receiving unit 4 to the information signals of the calling subscriber. The implementation of the latter function is provided by connecting the unit 4 for receiving an identification message to the telephone circuit of the standard TA circuit of existing telephone communication networks.

The identification message display unit 3 is intended for displaying the SIGNATURE MATCH or USER NOT REGISTER signals coming from the identification message receiving unit 4 to various standard display devices. In particular, the identification message display unit 3 can display the identification result of the caller by means of a pair of light bulbs to which electric potential is supplied in accordance with the signal of the obtained analysis result of the identification message by the unit 4.

The identification message receiving unit 4 is intended for generating identification results of caller messages.

Figure 1 shows a block diagram of an embodiment of a unit 4 for receiving an identification message. It contains a block of 9 bandpass filters; an encoding device 10, consisting of an encoder 11 and a shift register 12; block 13 comparison; block 14 memory; the control device 15 and the decision block 16, each of the filters of the block 9 is tuned to one of the frequencies of the corresponding tone generator of the block 5.

The encoder 10 converts the electrical signals from the outputs of the bandpass filters of block 9 into a binary code sequence of the signature of the caller.

The encoder 11 of the encoding device 10 is used to convert the electrical signal from the output of a separate band-pass filter into a binary positional n-bit code. Moreover, where t is the number of inputs of the encoders of block 10 equal to the number of bandpass filters of block 9.

The shift register 12 of the encoding device 10 performs the functions of receiving p-bit binary codes from the encoder 11 of the encoding device 10, shifting, storing and issuing it to the comparing unit 13 of the generated binary code sequence corresponding to the signature of the caller. The number of bits of this sequence is k-lxn or k lxiog m, where 1 is the number of signals at the output of block 9 of the bandpass filters when receiving a caller ID message corresponding to the number of touches by the caller of the conductive tracks of board 7 with an electric pen 8 when signing.

The required number of bits of the shift register 12 of the encoder 10 is determined by the maximum value of k, which depends on the accuracy of the encoding of the caller's signature (value m) and the maximum length of the signature (value 1). So at ip-8 to 1-50 the value is k-150, at t-16 and 1-50 the value is k-Ј00.

Block 13 comparison is designed to compare the received signals of the identification message of the caller with the standards of signatures of the callers.

-slip (Ksd.) for the shift register 12 when receiving the identification message, read pulses (HSC) for the shift register 12 and the memory unit 14 when comparing the received caller identification message with the signature codes of the patterns stored in the memory unit 14. Decision tree 16 is intended to convert the signal of the result of comparing the identification of the calling subscriber with the signatures of the callers of the block 13 in the signal MATCH SIGNATURE or the USER is not registered about the matching characteristics to display the E required form in block 3 of the display message identification. The feasibility of band-pass filters of block 9 is confirmed both by many years of experience in the development and operation of analog (frequency) multichannel telecommunication systems, and by the fact that these filters do not have unique characteristics and are widely known (see Gitlits M.V., Lev A.Yu. Theoretical fundamentals of multichannel communication.-M.: Radio and communications, 1985; Khromov EI. Fundamentals of the construction of analog transmission systems.-M.-Radio and communications. 1983). To build the encoder 11, elements of discrete technology can be used, for example, priority encoder chips of the type K555IVZ or K155IV1 (see Yakubovsky S.V., Nisselson L.I., Kuleshova V.I., etc. Digital and analog integrated circuits. / Reference. Edited by S.V. Yakubovsky.-M.: Radio and Communications, 1990.-496 p). When implementing shift register 12, standard 537RU13 type static memory microcircuits with a capacity of 4K (4Kx1) bits can be used (see Yakubovsky S.V., Nisselson L.I., Kuleshova V.I. et al. Digital and analog integrated circuits. / Handbook, edited by S.V. Yakubovsky.-M.-Radio and Communications, 1990.-496 o). On the same microcircuits, a memory block 14 can be built for codes of standards of signatures of subscribers having the right to access the called subscriber. Block 13 comparison can be implemented on standard circuits of circuits for comparing numbers like 134SP1 (see Yakubovsky S.V., Nisselson L.I., Kuleshova V.I. et al. Digital and analog integrated circuits. / Reference. Ed. C. V. Yakubovsky.-M.-Radio and Communications, 1990.-496 c). On the elements of discrete technology, a control device 15 and a decision making unit 16 are also implemented (see Yakubovsky S.V., Nisselson L.I., Kuleshova V.I. et al. Digital and analog integrated circuits. / Handbook. Ed. C. V. Yakubovsky. -M.: Radio and Communications, 1990.-496 c). The signature reading unit 5 is intended for converting the dynamic characteristics of the caller's signature into electrical signals of tonal frequencies in the effectively transmitted frequency band of the telephone channel. Block 6 tone generators is designed to generate a grid of fixed frequencies in the frequency band of the telephone channel. The number of generators is selected in terms of the accuracy of coding of the signature of the caller. Block 6 can be made either in the form of a set of generators of sinusoidal oscillations, or in the form of a single generator with a fixed set of frequencies. The circuits of such generators are widely known (see Alekseenko A.G., Kolombey G.A., Starodub G.I. Application of precision analogue IS-M: Radio and communications, 1981.-224 pp. In paragraph 5.1. Sine-wave generators oscillations. -C.129-137). - in . caller signatures. It is made in the form of an insulating plate with t-segments (conductive paths), the number of which is equal to the number of generators of unit 6. The electric pen 8 is designed to receive tone signals from the conductive paths of board 7 when the caller writes this pen 8 to the board 7 signatures. It is made in the form of a conductive rod. The subscriber identification device when establishing a telephone connection works as follows. Device preset mode. In block 4, the standards of caller ID messages are recorded, reflecting the dynamic characteristics of their signature. The electric pen 8 does not have electrical contact with the board 7. Mode of operation. After establishing a connection between the calling party and the called party, through the telephone of the calling party 1 and the called party 2 through the telephone network communication channel to the subscriber lines of the respective subscribers, at the request of the called party, the calling party signs with an electric pen 8 on the circuit board 7, which ensures sending, with block 6 tone generators through a board 7 conductive tracks and an electronic pen 8, along the established path to the telephone 2 called subscriber coagulant tone sequence (message identification) signal, in accordance with dynamic characteristics of the calling subscriber's signature. Through the telephone set 2 of the called subscriber, the identification message is sent to the identification message receiving unit 4, in particular to the input of the bandpass filter unit 9. Each band-pass filter of block 9 extracts from this sequence, if there is a signal, a current of frequency, at UO / ftfO - / which it is tuned to and supplies it to the corresponding input of encoder 11 of encoding device 10, which converts this signal (encodes) to the corresponding positional signal -bit binary code at the output. From the output of the encoder 11 of the encoder 10, the n-bit binary code is fed to the input of the shift register 12 of the encoder 10. At the end of the action of the selected signal at the output of the corresponding band-pass filter of block 9, the control device 15, until the next signal appears at the output of block 9, generates -shift pulses (ISD) for the shift register 12, which shift the code pattern recorded in it by p-bits. This process is repeated until the last signal of the identification message is received. The condition for the absence of signals at the output of block 9 bandpass filters during a certain time interval (for example, 1-2 s or a time interval equal to the duration of the signal sequence of the longest identification message) can be accepted as a sign of the end of the reception of the sequence of signals of the identification message (end of the signature of the caller) . Upon completion of the reception of the sequence of identification message signals, the control device 15 organizes the process of comparing this sequence, presented in binary code in the shift register 12, with the codes of the standards of signatures of authorized subscribers stored in the memory unit 14, forming, in accordance with the adopted comparison procedure, read pulses code sequences for the shift register 12 and the memory unit 14. If a match is found, then the SIGNATURE MATCH signal is received in the display unit 3 of the identification message. Otherwise, the last signal is USER NOT REGISTER, which is displayed in the appropriate form. After

- Why the called party accepts the conversation. m telephone management solution

Claims (1)

SUBSTITUTION IDENTIFICATION DEVICE FOR ESTABLISHING TELEPHONE CONNECTION, comprising telephone sets of the calling and called subscribers, an identification message display unit and an identification message receiving unit, the telephone devices being connected through a communication channel by subscriber lines of the respective subscribers, and the identification message display unit is connected through an identification message receiving unit to the telephone of the called subscriber, characterized in that a signature reading unit is inserted into it, containing The main block of tone frequency generators, the board of conductive tracks and the electric pen are the pen, and the outputs of the block of tone frequency generators are connected respectively to the inputs of the board of conductive tracks, the tonal signals from which are read by the caller using an electric pen - pen connected to the subscriber line of the caller.