RU2223611C2 - Personal call device - Google Patents

Abstract

FIELD: telephone exchange engineering concerning personal call of particular line subscriber to telephone set and remote control of terminal. SUBSTANCE: device has call reception unit connected to subscriber line, signaling unit, and call code reception unit; the latter and signaling unit are connected to outputs of call reception unit; signaling unit is connected to output of call code reception unit and is made in the form of device converting call code to addressing signals and call signals of terminals differing in structure, for instance different-cadence inductor signals, voice-frequency ones in the form of various jingles, and coded signals; terminal sets are also introduced, each incorporating terminal; these sets are connected to subscriber line and to signaling-unit outputs of call signal and call addressing signal. EFFECT: enhanced comfort for users including when automatic terminals with automatic mode of operation are employed. 1 cl, 1 dwg

Description

FIELD OF THE INVENTION
The invention relates to the field of automatic telephony, and more particularly to the technique of personal (personal) calling a specific subscriber of a subscriber line and remote control of terminal devices.

State of the art
A telephone personal call device (L1) is known, which receives a conditional signal specified by the caller. The device has a decoding unit for this signal and a unit that converts the decoded signal into a ringing signal of one frequency or another, which allows the receiver to determine who the call is directed to. The device only works if there is a connection between the subscribers at the stage of sending the PBX call signal, i.e. when using devices with automatic telephone exchanges of obsolete types with a direct control method.

 A device (L2) with a personal call of subscribers is known that works with modern types of automatic telephone exchanges and is based on the use of automatic caller ID identification equipment. The device (L2) contains a storage device where a table of numbers of external systematic subscribers is stored. The table is divided into groups corresponding to all internal subscribers - users of a given subscriber line (AL). The device contains the identifier of the caller’s number determined during an incoming call with the number of one of the indicated groups. Based on the identification result, the device generates one of several ringing signals differing in sound color. The device (L2) is characterized by a number of “situational” restrictions: the calling subscriber does not call from his telephone, in particular from the payphone, from one calling telephone (TA), it is possible to call several subscribers of this line, etc. Using the device is not possible if the PBX is on the calling side not equipped with caller ID equipment, in particular on office and mini-exchanges.

 A device (L3) is also known that works with any type of PBX and is designed to personalize a call to a particular subscriber. When using this device, each subscriber - user is assigned a conditional call code. After the device automatically answers the PBX call, the calling subscriber sets the corresponding code of the called subscriber to the line. The decoding results of the call code in the device are used to identify the called party.

 The other devices - analogues that more effectively solve the problem of personalizing telephone calls, were not found by the author. Therefore, the device (L3) is adopted as a prototype of the inventive device.

 The personal call device (UPV) (L3) contains a call receiving unit, a call code receiving unit and an alarm unit (the latter is allocated from the signaling and releasing unit / L3 / as deciding an independent functional task of generating a call signal). In this case, the call receiving unit and the signaling unit are connected to the subscriber line, the call code receiving unit and the signaling unit are connected to the corresponding outputs of the call receiving unit. All the above signs coincide with the essential features of the claimed device.

In addition, the device is a prototype (L3) is also characterized by the following features that distinguish it from the claimed device:
- the device comprises an indication unit and a shutdown unit, which ensure that the received code of the called subscriber is displayed on the light panel (upon preliminary recording of his presence at the workplace). Such a signaling scheme does not seem to be convenient enough for users and is completely unacceptable if they are in different rooms. The speed of answering a call is reduced. The possibility of remote control of terminal devices is excluded;
- the signaling unit (which serves as a shaper of the call signal of the subscribers and at the same time the signal to control the call) is made in the form of a generator of a standard tone signal, common to all device users. TA (and its calling device) is connected directly to AL. Such a call scheme has an interfering effect to all users without exception, assuming they are in the same room. The number of terminals served is limited to one SLT.

SUMMARY OF THE INVENTION
The objective of the invention is to eliminate the above limitations inherent in the prototype (L3), i.e. increasing the level of comfort and convenience for device users, extending the task of personalizing a call to the case of using several terminal devices, including automatic terminal devices, in particular automatic terminal devices with a controlled operating mode, creating a subscriber-wide device that allows users to organize their subscriber terminal with the maximum level of amenities and facilities for them.

 The invention is based on the use of a received call code for addressing a call to a specific (personal, required) terminal device and for generating an audio signal with a characteristic color when calling one of the subscribers or a control encoded signal when accessing an automatic device.

 Like the prototype device (L3), the claimed device contains a call receiving unit (PV unit), a call code receiving unit (PKV unit) and an alarm unit (SGB unit). The PV unit and the SGN block are connected to the AL, the PKV block and the SGN block are connected to the corresponding outputs of the PV block. The above essential features of the claimed device coincide with the essential features of the device is a prototype (L3).

 One of the distinguishing features of the claimed device is the ability to include several terminal devices. By terminal devices (DT), in particular automatic (AOU), we mean both traditional subscriber terminal devices (SLTs, additional calling devices of TLDs, faxes, answering machines, etc.), as well as specific non-traditional SLTs, TLDs, household, organizational, and etc. technology.

Traditional subscriber op-amps are intended for direct connection to the AL and therefore are designed to receive a standard induction ringing signal of a telephone exchange with certain parameters in terms of level, frequency and time structure (coding). In the inventive device, the op-amp at the call stage is torn off from the AL, and the ring signal (BC) of these op-amps is generated in the device itself, which allows the use of the op-amp with non-standard types of aircraft. So, non-traditional OS can have, for example, the following types of aircraft:
- tonal (when using a broadband electro-sound transducer (speaker) as a TA call device, reproducing the time-frequency structure of the supplied aircraft);
- potential;
- coded with a wide variety of coding systems with pulsed or continuous code;
- combined of several types of signals.

 Standard induction aircraft ATS is binary in nature. This is precisely the reason for the uncertainty in the called subscriber and the possibility of using only one AOU with the only active mode of operation on the AL. When using coded aircraft, it is possible to use controlled AOUs with several operating modes. So, the OLA can serve, for example, a monitoring device for 3 rooms in an apartment or a collective answering machine for 5 subscribers with the issuance / recording of personal messages for each subscriber.

 Each incoming call on the UPV is intended to suspect one of the subscribers to the TA or set a specific mode of operation of one of the included AOUs. Therefore, by the call object, we mean one of the subscribers of this AL or the specific mode of one of the serviced AOUs.

 Consider specifically the essential features of the claimed UPV, distinguishing it from the prototype device (L3). For convenience, we group them into 2 groups A and B.

 A. The SGN block is connected to the output of the PCV block and is designed as a converter of a call code into personal call signals (PSV). The latter include call addressing signals and ringing signals of terminals with a different structure.

 The aforementioned communication between the blocks ensures the transfer of the call code to the SGB unit. Thus, the SGB unit is controlled, which generates its paired ("two-dimensional") call signal with each call, personal to the called object and determined by the received call code.

 The call addressing signal - pre-programmed by users for each of the used call codes, serves to switch the call to the desired op-amp, for example, to personal or group TA subscribers. In this case, the addressing signal can be selected as one op-amp, or several. The choice of several op-amps provides the search character of the incoming call to the places of possible stay of the subscriber. For example, a subscriber’s call in an apartment can be routed to his room and shared kitchen, bypassing the rooms of other subscribers.

In the SGB unit (and the UPV as a whole), aircraft of the same type can be implemented for all used values of the call code or several different types. Possible types of aircraft were discussed earlier. The difference in the structure of the aircraft of each of the types is designed to provide the possibility of their recognition by ear by sound color - when calling subscribers or automatically - when contacting the AOU. The difference in the structure of the aircraft is provided in different ways depending on its type. So for the formation of encoded signals, the corresponding converters of the directly input or converted call code are used. Aircraft coloring for SLTs and TLDs can be carried out, for example:
- a change in the signal frequency - for inductor (in a limited frequency range) and tonal BC,
- a change in the time slicing (coder) of the signal over the interval of its frequency - for inductor (when using both ringing ringing devices and tone calling devices) and tone aircraft,
- using various combinations of signals of several frequencies - for tonal aircraft,
- reading from the memory (digital, magnetic) of different characteristic signals, musical phrases, direct calls, for example, by name - for tonal BC.

 B. Terminal sets (OK) have been introduced, each of which has an output for switching on the terminal device and inputs for connecting to the subscriber line and to the outputs of the signaling unit by the call addressing signal to this terminal device and by its ringing signal.

Each of the independently addressed op-amps is included in the OLA scheme through its own OK. OK is a switching node providing:
- disconnecting the OS from AL in the initial state of the device,
- the arrival of the aircraft of the SGB unit at the OS at an incoming call,
- connecting the OS to the AL when answering a call and an outgoing call from the OS,
- mutual coordination of the OS interface with the OLA circuit.

 Coordination of OS and OK by types of aircraft is carried out by appropriate tracing of the output signals of the SGB unit at the corresponding OK inputs.

 The above characteristics are limited to the set of essential features that distinguish the UPV from the prototype device (L3).

 UPV can be performed as an independent structural product, mounted together, for example, with a TA in the form of a base unit, or as part of another device.

 The device can be made rigid ("sealed") or customizable (programmable) according to one or another parameters scheme. OKs can have a customizable interface according to one or several parameters (according to the type of op-amp status signal, etc.), which increases the universality of using the device with various types of op-amps. Subscribers can configure UPV electrically (by installing various inserts, jumpers, modules of individual nodes, switching circuits, etc.) or programmatically, depending on the embodiment of the device.

 Below are a few special cases of the execution of UPV, expanding the range of its practical use.

 UPV can be made in the form of a concentrator of several input subscriber lines, including lines with a non-standard interface. So, for example, a local telephone exchange line, a cellular communication line, etc. can be included in a hub along with a line of a city telephone exchange. Such an UPV concentrator can have one talk line or several different logic for processing a call sequence. In any case, it provides personal processing of incoming calls arriving on each of the lines, as well as the OU output to any of the lines during an outgoing call.

 UPV can be performed as microATS with a personal call, providing both external (i.e., incoming via the incoming AL and outgoing to it) calls, as well as internal calls of its subscribers. Structurally, the UPV - microATS is represented as the UPV - concentrator of the external incoming AL and the internal call line.

 The PCB UPV block is usually performed in the form of a decoder for a tone or pulse signal generated by the caller with the dialer of his TA when setting the calling code of the called subscriber. The type of decoder used determines the valid dialing method on the calling party when setting the call code. It is possible to execute the PCV unit in the form of a universal decoder of call codes from both pulse and frequency dialers, making the OLA invariant to the type of dialer used on the calling side. It is also possible to execute the PCV unit in the form of a simple speech recognition device. In this case, the call code is set by the voice pronunciation of one of the conditional words, for example, numbers from 0 to 9.

 Along with the "radial" addressing of calls, providing for the inclusion of each of the op-amps in its own OK, the OLA can also provide targeted service for several op-amps when they are connected through the OK in one group line. In this case, the aircraft generated by the SGB unit on the group line are combined, including address codes for selecting the called op-amp, and the inclusion of the op-amp in the group line is done through address code decoders.

The technical result from the use of the invention is as follows:
1. Increased user comfort due to the use of colored acoustic signals for personal calls, including melodic tones. These signals, when they are loud enough, are accessible to all users and do not require any effort on their part to identify the direction of the call.

 Addressing calls to personal (or group) SLTs or TLDs and using the minimum volume of ringing devices allows you to further reduce or negate the disturbing and distracting effect of all the "alien" calls.

 2. It is possible to connect several AOUs to AL, to select them remotely from the caller's side, as well as to remotely control the operation mode of controlled AOUs.

 3. The opportunity has been obtained to increase the load on AL as a shared line without dividing the numbers and installing additional station and subscriber equipment. So UPV can be used to telephone a separate apartment in a house, separate houses in a village or a holiday village.

 4. Addressing a call to the desired subscriber further reduces the time of a call and occupation of station equipment.

List of figures
The invention is illustrated by the figure, which shows a variant of the structural diagram of the UPV.

 Information confirming the possibility of carrying out the invention.

 A possible version of the structural construction of the UPV is shown in the drawing. The device is customizable, of universal use, with 4 outputs for switching on the op-amp, it allows servicing the op-amps with inductor, tone and coded calls, provides reception of a unique call code set by a dialer with a pulse dialing method.

 UPV is included in the subscriber line AL1 and serves the terminal devices OU 2-1, 2-2, 3 and 4. The device contains a call receiving unit PV 5, a call receiving code receiving unit PCV 6, an alarm unit СГН 7, terminal sets OK 8-1. .. 8-4, release unit 9 and switching elements 10-1 ... 10-4.

 Blocks PV 5 and PKV 6 are identical to the corresponding blocks of the prototype device (L3). The PV unit includes a line auto-pickup circuit (ATS call detector, a call lock and a line pickup circuit), a gating key that transmits the line signal to the input of the PCV 6 unit while the call code is being received, and a temporary device (timer) for generating external signals block СГН 7 and the release node 9 of the call code request signals (Call code) and the start of the call (HB) and the internal key control signal.

 The PCV block, with its discrete design, includes a quasi-optimal filter that restores the circuit and is known in telephony (see, for example, L5, p. 501-503). With a unique call code, the PCV block is simplified to a filter, a threshold circuit, and a binary counter.

 The release node 9 is also identical to the corresponding node of the alarm and release block of the prototype device and includes a counting pulse generator, a binary counter, an OR signal assembly, and a release signal conditioner.

 In the block СГН 7, a code (binary to position) converter 11, a matrix 12, a tone signal synthesizer (TS) 13, an inductor signal generator (IS) 14, a multiplexer 15, a code converter (positional to two-frequency) 16 and a matching circuit (CC) are allocated 17.

 The TS 13 synthesizer is a programmable analog-digital device that provides the formation of different musical phrases (see, for example, (L6)). The selection of a musical phrase is provided by an active signal at one of its control inputs. Matrix 12 allows you to implement a number of user settings of the device - addressing calls to various op amps, the distribution of aircraft of various structures between call objects, the formation of temporary structures of inductor aircraft. The matrix is made in the form of a structural element with 11 input vertical and 29 output horizontal buses, allowing users to install diode inserts at the required bus intersection points - switching points (in the drawing, the diode inserts installed in the matrix are shown with asterisks). The vertical buses of the matrix are numbered in accordance with the call code taken from the code converter 11. The bus “-” corresponds to the absence of the call code, i.e. when the caller has not dialed any call code. In essence, the matrix 12 is a converter of the received call code supplied to its vertical buses into a set of signals necessary for the formation of the PSV corresponding to this code.

 Each of OK 8 has a call and line inputs and an address signal input. The structure of the OK includes a relay (P) 18 and 19, an OR element 20 and a sensor (D) 21 of the OS condition - a threshold circuit that fixes the difference in the supply voltage of the OS when it enters the operating state. The switching element 10 allows you to set the aircraft at the input OK, corresponding in appearance to the included OS.

The installations shown in the diagram correspond to a specific example of the use of OLA in a small office. We detail this example. UPV serves 5 subscribers: the chief (call code "1"), having in his office a voice-activated telephone with tone dialing (DT 2-1 in the drawing), 2 leading employees (call codes "2" and "3") in the 1st room , where a similar SLT (ОУ 2-2) is installed, and 2 more employees (call codes "4" and "5") in the 2nd room, where an additional ringing device (TLD) with an inductor call (OS 3) is installed. At the same time, the boss often stays in the 1st room, so his call arrives at the same time in the office and in this room. The UPV (in OK 8-4) also includes automatic OU 4 - an answering machine-informant with a controlled mode of operation ¹ ( ¹ The circuit of an answering machine with a controlled mode of operation basically repeats the well-known circuit of a traditional answering machine with electronic message memory, remote control and the organization of personal "mail boxes "(L4, L7). From the traditional circuit (L4, p. 175) it is distinguished by the following: the detector circuit of the inductor call signal is excluded; as the call detector, the circuit of the decoder of two-frequency answering machine signals is used with the launch of the call processing program upon receipt of any of the codes) (A / Ok), serving calls with codes "-" and "0" with messages, respectively, about employee calling codes and the company's product range.

UPV works as follows. In the initial mode (in the absence of an incoming or outgoing call), all units of the device are freed from the information of previous calls, and the relay outputs 18 and 19 of all OKs in the absence of active control signals are closed to their upper inputs according to the scheme. All op amps are disconnected from AL. Monitoring the OS condition is provided by supplying them through the relay 19 of the supply voltage U _to .

 With an incoming call, the device can be divided into several stages. At the 1st stage, after the caller has dialed the AL number, the induction signal of the PBX call is sent to the PV unit 5. The PV unit 5 receives this signal, fixes the call, takes the AL, and starts the temporary device. At the 2nd stage — the call code request stage — the corresponding HAZ signal from the PV unit 5 is supplied to the TS 13 synthesizer of the SGN 7 unit as a control signal for triggering a characteristic tone signal. Through the matching circuit CC 17, the synthesizer output signal is sent to the AL and perceived by the caller as a call code request.

 The 3rd stage - the stage of setting and receiving the call code - is characterized by the closure of the key in the PV 5 block and the connection of the PKV 6 block through this key to the AL. At this point, the caller dials with his dialer the digit code allocated to the called object. This code is received and decoded by the PCB 6 and installed at its output in the form of a binary number. The 4th stage - the stage of PSV formation - is determined by the activation of one of the vertical buses of the matrix 12 and the development of a temporary device unit PV 5 to the release unit 9 of the signal to start the call HB. With the arrival of the HB signal in the release circuit 10, a counting pulse generator and a binary counter are started. Signals corresponding to the received code and settings made in the matrix are set on the horizontal buses of the matrix 12.

 Active addressing signals are removed from one, and when calling the chief with code "1" simultaneously from two of the horizontal buses 26 ... 29 of the matrix. Under the influence (through the OR element 20) of these signals in the selected OK, relay 19 is activated, thereby ensuring the supply (via contacts P 18 and P 19) of the aircraft to the called op amp. The power of the called OS at the stage of PSV formation comes from the formation schemes of the corresponding aircraft.

 For subscribers with codes "1", "2" and "3" using tone TAs, the control signals of the TS 13 synthesizer are removed from the horizontal buses 2, 3 and 4 of the matrix 12 .. The tone signals of the synthesizer 13 are also generated when other objects are called. These signals through the matching circuit CC 17 enter the line as a signal for sending a personal call.

 To call subscribers "4" and "5" are used inductor aircraft with different coding. The signals are taken from the output of the generator IC 14. The generator is controlled (blocked) by the output signal of the multiplexer 15. The address signal of the multiplexer is a 3-digit parallel binary code with a clock cycle of 0.25 s, taken from the intermediate bits of the counter of the release node 9. The multiplexer converts the parallel codes of the coding installed by users on horizontal tires 11.. . 18 of the matrix 12 for each of the "inductor" call codes, into personal periodic encoder signals with a period of 4 s.

 When responding from the called op-amp (raising the SLT tube or answering the AOU), the decrease in the supply voltage of the op-amp is detected by the D21 sensor. Under the influence of the sensor output signal, relay P18 is activated, while the op-amp is connected to AL. At the same time, the sensor signal is sent to the release unit 9. The output signal of the release of this unit releases (reset) the PV 5 and PKV 6 units (as well as the counter of the release unit). Thereby, all output signals of the SGB unit are removed. In this case, the relays 18 and 19 of the selected OK remain on (sensor signal D21), and the op-amp is connected to AL1, the AL itself is kept low by the op amp DC resistance. If there is no response from the called OS, the supply of CB continues for a fixed time, determined by the filling of the counter of the release unit 9. The fill signal of the counter also generates a release signal that causes the device to be automatically released. UPV is reset.

 In an outgoing call from one of the subscribers, the TA handset is picked up by the sensor 21 of the corresponding OK. Relays 18 and 19 are triggered and the TA is connected to the AL. All other blocks of the device remain in their original state.

 In conclusion, we note that individual blocks or UPV as a whole with success can also be performed in microprocessor design.

Literature
1. Masiba M., Nasimura T. Telephone set with a variable frequency of tone dialing. Japan Patent 53-19482, CL H 04 M 3/02, 1978

 2. Automatic caller ID "Rus-13s". User's manual. SCS Center, 1996

 3. Yu. N. Potapov, V.A. Popov. Prefix to the telephone set. Description of the invention SU 1398107 A1, CL H 04 M 9/02, 1982 (prototype).

 4. St.J. Bigelov. Phone repair. Moscow, BINOM, 1996

 5. O. N. Ivanova and others. Automatic switching. Moscow, Radio and Communications, 1988

 6. The device is a musical synthesizer. "Amateur Radio", Minsk, 1992, 3.

 7. Panasonic. Telephone answering machine with fax machine KX-F700. User's manual. Moscow, Direct Inform Service, 1995

Claims (1)

A personal call device comprising a call receiving unit connected to a subscriber line, an alarm unit and a call code receiving unit, the call code receiving unit and an alarm unit being connected to the outputs of the call receiving unit, characterized in that the alarm unit is connected to the output of the call code receiving unit and is made in the form of a converter of a call code into call addressing signals and ringing signals of terminal devices with a different structure, for example, inductor with different coding, tonal in the form of different music s phrases encoded, introduced terminal sets, each of which included the terminal device, each terminal set has inputs connected to the subscriber line and to the outputs of the ringing signal and addressing the call signaling unit.