JP2009239557A - Apparatus and method for generating ringing signal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent instantaneous current consumption from being increased even when a plurality of calls are incoming at the same time, in a communication apparatus to which a plurality of telephone communication lines are connectable and which includes a plurality of connecting terminals to connect telephone communication devices thereto. <P>SOLUTION: When a plurality of incoming calls are accepted at the same time via a WAN port 11, a CPU 10 controls line I/F circuits 22(1)-22(4), 24(1)-24(4) of line I/F sections 22, 24 via codec sections 21, 23 and performs control to output from different connecting terminals a first ringing signal and a second ringing signal of which the phases are different from each other by 90° with respect to a reference phase, via any two line I/F circuits of the line I/F sections 22, 24. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is used, for example, in a communication device having a plurality of connection ends to which a plurality of lines for telephone communication can be connected, such as a main device or a gateway device of a telephone communication system, to which a telephone communication device is connected. The present invention relates to a device for generating a ringing signal and a method for generating a ringing signal.

  Telephone communication is a communication means that can be used easily and at a relatively low cost, and a large number of telephone calls are made every day for business purposes in companies and the like. For this reason, when there are many telephones that emit ringer sounds that notify an incoming call when an incoming call is received, there is a problem that these many telephones emit a ringer sound at the same time when receiving an incoming call, resulting in noise. It was.

  Therefore, in Patent Document 1 described later, in a private telephone exchange network constructed in an office building or the like, the ringer ringing terminal is restricted at the time of incoming call, and the noise due to ringer ringing is reduced, and the number of ringer ringing operation terminals An invention of a ringer ringing control system is disclosed in which it is possible to arbitrarily set and to improve the use efficiency of a telephone terminal.

  With the technology described in Patent Document 1, when a private branch exchange network is constructed, a ringer ringing operation terminal that rings when receiving an incoming call is determined in consideration of the number of telephone terminals to be connected and the installation location of the telephone terminals. Therefore, it is possible to alleviate the noise caused by ringer ringing, to appropriately secure a telephone terminal capable of making a call without ringing even when an incoming call is received, and to improve the use efficiency of the telephone terminal.

The above-mentioned Patent Document 1 is as follows.
JP-A-6-98362

  By the way, as described above, since a large number of calls are received at a company or the like, there are many cases where a plurality of calls are received simultaneously (a plurality of incoming calls are generated simultaneously). In this case, in the private telephone exchange network, for example, the main unit or the like, a ringing signal (ringer signal) is supplied to a telephone terminal connected to a different connection terminal for each incoming call in order to reliably notify each incoming call. Thus, a telephone terminal connected to a different connection end is made to ring (ringer sound is emitted).

  However, if a ringing signal with the same ringing timing is supplied to different connection ends of the main unit, the peaks of both ringing signals (ringing voltage) will overlap and the instantaneous current consumption will increase. Cheap. In FIG. 6, there are two incoming calls at the same time, and in order to notify each incoming call, a ringing signal having the same ringing timing is supplied to different connection ends (line 1 and line 2) to which the telephone terminal is connected. It shows the change in current consumption when

  As shown in FIGS. 6A and 6B, when the ringing signals having the same ringing timing are supplied to different connection ends (line 1 and line 2), the peaks of the ringing signals supplied to the different connection ends overlap. Therefore, as shown in FIG. 6C, the instantaneous current consumption inside the main device increases. For this reason, it is not preferable to make the main apparatus operate stably.

  Therefore, for example, when there are two incoming calls at the same time, it is conceivable to use ringing signals having different ringing timings. FIG. 7 is a diagram for explaining a case where two ringing signals having different ringing timings are transmitted. Here, as shown in FIG. 7, the ringing signal repeats ringing and ringing stop alternately, such as ringing for 1 second and stopping ringing for 2 seconds.

  Then, the main apparatus receives two incoming calls at the same time, and supplies the ringing signal shown in FIG. 7A to one connection end to which the telephone terminal is connected, and to the other one connection end to which the telephone terminal is connected. As shown in FIG. 7B, a ringing signal whose ringing timing is delayed by 1 second from the ringing signal shown in FIG. 7A is supplied. As a result, the peaks of the ringing signal do not overlap and the instantaneous current consumption does not increase.

  However, in the case of the example shown in FIG. 7, although there are two incoming calls at the same time, the timing of notification of incoming calls is slightly different. If possible, if two incoming calls occur simultaneously, it is desirable to be able to notify them simultaneously.

  In addition, in the case of the method of shifting the ringing timing of the ringing signal, if the ringing signal repeats the state of ringing for 1 second and stopping for 2 seconds, there will be a ringing stop period when three incoming calls occur simultaneously. I will not. In this case, until one of the telephone terminals responds to the incoming call, the ringing sound is always emitted from some of the telephone terminals, and the ringing sound may be very annoying. Conceivable. Therefore, although the probability of occurrence is low, it is desirable to be able to appropriately cope with the case where three or more incoming calls occur simultaneously.

  In view of the above, the present invention is capable of connecting a plurality of lines for telephone communication, and a communication apparatus having a plurality of connection ends to which telephone communication apparatuses are connected. An object is to prevent an instantaneous current consumption from increasing even if a plurality of ringing signals according to the above are generated. It is another object of the present invention to appropriately cope with the case where more incoming calls occur at the same time than in the past.

In order to solve the above-described problem, a ringing signal generating apparatus according to the invention described in claim 1
A communication interface means to which a plurality of lines for telephone communication can be connected;
A plurality of connection terminals for analog telephone communication to which telephone communication devices are connected;
Ringing signal generating means for generating first and second ringing signals whose phases are different from each other by 90 degrees;
Control means for controlling the first ringing signal and the second ringing signal to be output from different connection ends when a plurality of incoming calls are received simultaneously through the communication interface unit. And

  According to the ringing signal generating apparatus of the first aspect, when a plurality of incoming calls are received simultaneously through the communication interface unit, the first ringing signals whose phases generated by the ringing signal generation unit are different from each other by 90 degrees. And the second ringing signal are controlled by the control means so as to be output from different connection ends.

  As a result, when two incoming calls occur at the same time, ringing signals that are 90 degrees out of phase with each other can be generated and supplied to different connection ends. There is no overlap, so that the instantaneous current consumption does not increase.

Moreover, the ringing signal generation device of the invention according to claim 2 is the ringing signal generation device according to claim 1,
The ringing signal generating means is provided for each of a part of the plurality of connection ends, and generates a first ringing signal generating unit and the remaining of the plurality of connection ends. And a second ringing signal generator for generating the second ringing signal.

  According to the ringing signal generating device of the second aspect of the present invention, the ringing signal generating means includes a first ringing signal generating unit that generates a first ringing signal and a second ringing signal for each connection end. Any one of the generated second ringing signal generators is provided.

  This ensures that an appropriate ringing signal is supplied for each connection end, and even if there are two incoming calls at the same time, the peak of the ringing signal supplied to each connection end does not overlap, and instantaneous current consumption Will not grow.

Moreover, the ringing signal generation device of the invention described in claim 3 is the ringing signal generation device according to claim 2,
There are a plurality of the first ringing signal generators, and some of the first ringing signal generators and the remaining first ringing signal generators receive first ringing signals having different ringing timings. Generate
There are a plurality of second ringing signal generation units, and some of the second ringing signal generation units and the remaining second ringing signal generation units receive second ringing signals having different ringing timings. It is characterized by generating.

  According to the ringing signal generating apparatus of the invention described in claim 3, there are a plurality of first ringing signal generating units, a group for generating one first ringing signal having a different ringing timing, and a ringing timing. Are divided into groups generating the other first ringing signal. In addition, there are a plurality of second ringing signal generators, a group that generates one second ringing signal having a different ringing timing and a group that generates the other second ringing signal having a different ringing timing. To be divided.

  As a result, the combination of the phase and ringing timing enables generation of various ringing signals, and even when four incoming calls occur simultaneously, the peaks do not overlap each other. Thus, the ringing signal can be appropriately generated. Therefore, even when a plurality of ringing signals are generated at the same time, the instantaneous current consumption is not increased. Further, it is possible to avoid a situation in which the ringing sound for the incoming call notification becomes annoying, and appropriately cope with the case where more incoming calls occur simultaneously than in the past.

  According to the first and second inventions of this application, a plurality of lines for telephone communication can be connected, and the communication apparatus having a plurality of connection ends to which the telephone communication apparatus is connected are simultaneously generated. Even if a plurality of ringing signals corresponding to a plurality of incoming calls are generated, the instantaneous current consumption can be prevented from increasing.

  Further, according to the third invention of this application, a plurality of lines for telephone communication can be connected, and a plurality of simultaneous occurrences occur in a communication apparatus having a plurality of connection ends to which a telephone communication apparatus is connected. Even if multiple ringing signals are generated for each incoming call, the instantaneous current consumption does not increase, and even when more incoming calls occur at the same time than before, this can be handled appropriately. It can also be.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In an embodiment described below, an embodiment of the present invention is a gateway for connecting a wide area network such as a telephone communication network or the Internet to a network or a communication system formed indoors, for example. A case where the present invention is applied to an apparatus will be described as an example.

[Example of system configuration using gateway device 1]
FIG. 1 is a diagram for explaining an example of a communication system configured on the premises using the gateway device 1 of this embodiment. As will be described in detail later, the gateway device 1 of this embodiment includes a WAN port for connecting to a WAN (Wide Area Network) such as a public telephone network or the Internet, and a LAN (Local Area Network) formed on the premises. And an analog line port (hereinafter simply referred to as a line port) to which a telephone communication device such as a telephone terminal installed on the premises is connected. In this embodiment, eight line ports are provided.

  As shown in FIG. 1, a communication line from a WAN (Wide Area Network) is connected to the WAN port of the mobile terminal device 1 via a line terminating device 2. The line termination device 2 converts an optical signal supplied through an optical communication line connected to the WAN into an electrical signal and supplies the electrical signal to the gateway device 1, and converts an electrical signal from the gateway device 1 into an optical signal. It is output to the optical communication line. That is, the line termination device 2 is a mutual conversion device between an optical signal and an electrical signal.

  Further, a router, a personal computer, various IP terminals, and the like are connected to the LAN port of the gateway device 1 via a hub (HUB) 3. The hub 3 relays communication between the gateway device 1 and a personal computer or an IP terminal, and has a so-called multiport repeater function.

  A telephone communication device is connected to the line port of the mobile terminal device 1. For example, a plurality of telephone terminals can be connected via a telephone terminal or a main device 4 for a business phone as shown in FIG.

  A personal computer or IP terminal connected to the LAN port via the hub 3 connects to the Internet via the gateway device 1 and the line termination device 2 and browses information existing in a server device on the Internet. It is possible to perform communication via the Internet such as downloading or uploading information to a server device on the Internet.

  In addition, the telephone terminal connected to the line port makes a call from its own machine or responds to an incoming call, so that the gateway terminal 1, the line terminator 2, the Internet or the public telephone network A telephone line is connected to a communication partner so that telephone communication (such as a telephone call) can be performed.

  As described above, the gateway device 1 enables connection between the WAN and the LAN, and connection between the WAN and the private telephone system, and functions as a so-called protocol conversion device.

[Configuration Example of Mobile Terminal Device 1]
FIG. 2 is a block diagram for explaining a configuration example of the gateway device 1 of this embodiment. As shown in FIG. 2, the gateway device 1 of this embodiment includes a CPU 10 that controls each part of the gateway device 1 and performs various data processing.

  A WAN port is connected to the CPU 10 via an interface circuit (hereinafter referred to as I / F) 12 and a LAN port is connected via an I / F 14. Further, for the CPU 10, a memory unit 15 comprising various memories such as DDR-SDRAM (Double Data Rate Synchronous Dynamic Random Access Memory), NOR-FROM (NOR flash memory), and NAND-FROM (NAND flash memory). Is connected. Further, an LED (Light Emitting Diode) unit 16, an initialization switch 17, and a clock circuit 18 are connected to the CPU 10, and a line port unit 20 is connected via an I / F 19.

  As described with reference to FIG. 1, the WAN port 11 is connected to a communication line from the WAN. The I / F 12 located between the WAN port 11 and the CPU 10 converts received data received through the WAN port 11 into data in a format that can be processed by the CPU 10 and supplies the converted data to the CPU 10, or sends transmission data from the CPU 10 to the WAN 10. The data is converted into data in a format to be transmitted to the network and output through the WAN port 11.

  As described with reference to FIG. 1, a router, a personal computer, various IP terminals, and the like are connected to the LAN port 13 via the hub 3. The I / F 14 located between the LAN port 13 and the CPU 10 converts data received through the LAN port 13 into data in a format that can be processed by the CPU 10 and supplies the converted data to the CPU 10 or sends data from the CPU 10 to the LAN. The data is converted into data in the format and output through the LAN port 13.

  The CPU 10 controls each part of the portable terminal device 1 of this embodiment, and for various data supplied through each port, from the format and information added to the data, Understand the system and the network and system of the supplier. Then, the CPU 10 performs necessary processing such as format conversion, address conversion, protocol conversion, and the like on the various data received in consideration of the network and system of the supply source and the network and system of the supply destination. This is sent to the port to which the target network or system is connected.

  Therefore, personal computers and IP terminals connected to the LAN port 13 are connected to the Internet via the LAN port 13, I / F 14, CPU 10, I / F 12, and WAN port 11 and connected to the Internet. Communication between the server device and the communication device can be performed.

  Of the memory unit 15 connected to the CPU 10, the DDR-SDRAM is mainly used as a work area, such as temporarily storing intermediate results of various processes executed by the CPU 10. The NOR-FROM stores and holds programs executed by the CPU 10. The NAND-FROM stores and holds various data, for example, stores and holds various setting parameters.

  Then, the CPU 10 reads out and executes the program from the NOR-FROM of the memory unit 15, and performs the above-described various conversion processes and other various processes. In this case, the CPU 10 performs processing with reference to data stored in the NAND-FROM as necessary. Further, the CPU 10 uses the DDR-SDRAM as a work area, and performs various processes while recording or reading out the intermediate results of the process being executed in the DDR-SDRAM.

  The LED unit 16 connected to the CPU 10 includes a power (POWER) LED, an initialization (INIT) LED, an alarm (ALARM) LED, a configuration (CONFIG) LED, a PPP connection (PPP) LED, a VOIP connection LED, a WAN connection LED, A plurality of LEDs such as a LAN connection LED are provided. Then, the CPU 10 controls lighting, extinguishing, and blinking of each LED according to the state of the own device. Thereby, the state of the portable terminal device 1 can be notified to the user by turning on, turning off, and blinking the LEDs.

  The initialization switch 17 connected to the CPU 10 is for initializing the gateway device 1. When the initialization switch 17 is operated by the user, the CPU 10 performs processing such as returning the setting information of the NAND-FROM to the initial state or clearing the data of the DDR-SDRAM, thereby initializing the gateway device 1. Return to the state. The initialization switch 17 is operated when the gateway device 1 is moved and the connection is changed.

  The clock circuit 18 connected to the CPU 10 provides the current time and also has a calendar function capable of managing the year, month, day, and day of the week. Thus, the CPU 10 can always properly grasp the current date, current day of the week, and current time.

  Further, the line port unit 20 is connected to the CPU 10 via the I / F 19. The line port unit 20 is for connecting a telephone communication device to the gateway device 1. The line port unit 20 in this example includes eight line ports L1, L2, L3, L4, L5, L6, L7, and L8, and a telephone communication device can be connected to each of them.

  As shown in FIG. 2, the line port unit 20 and the CPU 10 are connected via a data line via the I / F 19, and are also connected via a control line as indicated by an arrow. The line port unit 20 receives power supply voltage from the power supply circuit 30 that forms a power supply voltage to be applied (supplied) to each unit from the commercial power supply, and supplies power to the telephone communication device connected to each line port. Or generating a ringing signal and supplying it to a telephone communication device connected to the target line port, or transmitting / receiving a voice signal between the connected telephone communication device and the CPU 10. Or

  In other words, when the CPU 10 of the gateway device 1 receives an incoming call addressed to itself through the WAN port 11 via the public telephone network, the CPU 10 notifies this to the line port unit 20 via the control bus. The line port unit 20 supplies a ringing signal to the instructed line port according to the control of the CPU 10 to notify that there is an incoming call.

  The telephone terminal, which is a telephone communication device connected to the line port, emits a ringer sound according to the supplied ringing signal and notifies the user of the incoming call. In response to this, when the user of the telephone device connected to the line port unit 20 performs an operation for responding to an incoming call (off-hook operation), the WAN port 11, I / F 12, CPU 10, I / F 19, line port unit 20 The telephone line is connected between the telephone terminal of the other party of the telephone communication connected to the WAN and the telephone terminal connected to the line port unit 20 so that the telephones can communicate with each other. Is done.

  In this case, the I / F 19 converts the packetized audio signal supplied through the CPU 10 into the original baseband audio signal and supplies it to the line port unit 20, or the baseband audio from the line port unit 20. It has a function of packetizing a signal and supplying it to the CPU 10.

  The CPU 10 of the gateway device 1 of this embodiment can simultaneously receive a plurality of incoming calls for telephone communication through the WAN port 11 and connect a plurality of telephone lines simultaneously. In this case, the CPU 10 controls the line port unit 20 so that a ringing signal can be supplied to a telephone communication device connected to a different line port of the line port unit 20.

  Here, the configuration of the line port unit 20 will be described. As shown in FIG. 2, the line port unit 20 includes codec units 21 and 23 and line I / F units 22 and 24. The line I / F unit 22 includes line I / F circuits 22 (1), 22 (2), 22 (3), and 22 (4) corresponding to the four line ports L1, L2, L3, and L4, respectively. It is a thing. Further, the line I / F unit 24 includes line I / F circuits 24 (1), 24 (2), 24 (3), and 24 (4) corresponding to the four line ports L5, L6, L7, and L8, respectively. It is equipped with.

  The codec unit 21 includes two codecs 21 (1) and 21 (2). The codec 21 (1) is for the line I / F circuits 22 (1) and 22 (2), and the codec 21 (2) is for the line I / F circuits 22 (3) and 22 (4). is there. The codec unit 23 includes two codecs 23 (1) and 23 (2). The codec 23 (1) is for the line I / F circuits 24 (1) and 24 (2), and the codec 23 (2) is for the line I / F circuits 24 (3) and 24 (4). is there.

  As shown in FIG. 2, each of the codecs 21 (1), 21 (2), 23 (1), and 23 (2) of the codec units 21 and 23 is connected to the CPU 10 through a control line. Accordingly, the control unit 10 can control each of the codecs 21 (1), 21 (2), 23 (1), and 23 (2) of the codec units 21 and 23.

  The CPU 10 also connects the line I / F circuits 22 (1), 22 (2), 22 (3), and 22 (22) through the codecs 21 (1), 21 (2), 23 (1), and 23 (2). 4) Each of the line I / Fs 24 (1), 22 (2), 22 (3), and 22 (4) can be controlled.

  In the gateway device 1 of this embodiment, each of the codecs 21 (1), 21 (2), 23 (1), and 23 (2) has a codec function (A / D conversion function, D / A conversion function). ), Control data I / F function (CPU I / F function) with the CPU 10, audio data I / F function (PCMI / F function) with the CPU 10, I / F function with the line I / F circuit, and It has a tone generation / tone detection function.

  Also, the line I / F circuits 22 (1), 22 (2), 22 (3), 22 (4) and the line I / F circuits 24 (1), 22 (2), 22 (3), 22 (4 ) Each have a line I / F function such as a power feeding function, a ringing function, a polarity inversion function, and a hook detection function.

[About simultaneous reception of multiple incoming calls]
As described above, the CPU 10 of the gateway device 1 according to the present embodiment may simultaneously receive a plurality of incoming calls for telephone communication through the WAN port 11 and simultaneously connect a plurality of telephone lines. It can be done. Here, consider a case where two incoming calls with high occurrence frequency occur simultaneously.

  When two incoming calls occur at the same time, a ringing signal having the same ringing timing is generated and sent to different line ports so that the user can be appropriately notified of each incoming call. As described with reference to FIG. 6, instantaneous current consumption may increase, which is not a preferable state such as a load applied to the gateway device 1.

  For this reason, as described with reference to FIG. 7, it is possible to use ringing signals having different ringing timings. However, if it is possible to receive calls at the same time, it is desirable to be able to notify them simultaneously if possible.

  Therefore, in the gateway device 1 of this embodiment, when two incoming calls occur at the same time, the ring timing is the same in the line port unit 20 according to the control of the CPU 10, but the phases are 90. Different ringing signals can be generated and sent to different line ports.

[Configuration for generating ringing signals with different phases]
FIG. 3 is a diagram for explaining the configuration of the line port unit 20 that generates ringing signals whose phases are different from each other by 90 degrees. As shown in FIG. 2, the line port unit 20 includes a codec unit 21, a line I / F unit 22, line ports L1 to L4, a codec unit 23, a line I / F unit 24, and line ports L5 to L5. It consists of the part which consists of L8.

  In the line port unit 20, a part composed of the codec unit 21, the line I / F unit 22, and the line ports L 1 to L 4 and a part composed of the codec unit 23, the line I / F unit 24, and the line ports L 5 to L 8 are , Which is similarly configured. Therefore, in the following, in order to simplify the description, a configuration of a part including the codec unit 21, the line I / F unit 22, and the line ports L1 to L4 will be described.

  The line I / F circuits 22 (1), 22 (2), 22 (corresponding to the respective line ports L1, L2, L3, L4 will be described with reference to FIG. 3) and 22 (4) are provided. The line I / F circuits 22 (1) and 22 (2) are provided with the codec 21 (1), and the line I / F circuits 22 (3) and 22 (4) are provided with the codec 21 (2). Is provided.

  Each of the line I / F circuits 22 (1), 22 (2), 22 (3), and 22 (4) includes a ringing signal (ringer voltage) generator 221 (1), 221 (2), and 221 ( 3) 221 (4) is provided. Each of these ringing signal (ringer voltage) generators 221 (1), 221 (2), 221 (3), and 221 (4) ring for 1 second and stop ringing for 2 seconds as described with reference to FIG. A ringing signal (ringer voltage) that changes in such a cycle is formed.

  In the gateway device 1 according to this embodiment, the ringing signal generator 221 (1) of the line I / F circuit 22 (1) generates a ringing signal having a reference phase. That is, the ringing signal generator 221 (1) generates a ringing signal that is not shifted from the reference phase (the shift is 0 degree).

  The ringing signal generator 221 (2) of the line I / F circuit 22 (2) generates a ringing signal whose phase is shifted by 90 degrees with respect to the reference phase. That is, the ringing signal generator 221 (2) generates ringing signals that are 90 degrees out of phase with the ringing signal generated by the ringing signal generator 221 (1). In this embodiment, the ringing signal generator 221 (2) generates a ringing signal delayed by 90 degrees with respect to the reference phase.

  In addition, the ringing signal generator 221 (3) of the line I / F circuit 22 (3) has a ringing of the reference phase in the same manner as the ringing signal generator 221 (1) of the line I / F circuit 22 (1) described above. A signal is generated. That is, the ringing signal generator 221 (3) generates a ringing signal that is not shifted from the reference phase (the shift is 0 degree).

  Further, the ringing signal generator 221 (4) of the line I / F circuit 22 (4) has a ringing of the reference phase in the same manner as the ringing signal generator 221 (2) of the line I / F circuit 22 (2) described above. A ringing signal whose phase is shifted by 90 degrees with respect to the signal is generated. That is, the ringing signal generator 221 (4) generates ringing signals that are 90 degrees out of phase with the ringing signal generated by the ringing signal generator 221 (3). In this embodiment, the ringing signal generator 221 (4) generates a ringing signal delayed by 90 degrees with respect to the reference phase.

  Thus, in the gateway device 1 of this embodiment, the ring I / F circuits 22 (1) and 22 (3) generate ringing signals that match the reference phase, and the line I / F circuit 22 (2 ), 22 (4), it is fixedly determined so as to generate a ringing signal shifted by 90 degrees with respect to the reference phase. In this embodiment, in the gateway apparatus 1, which line I / F circuit generates which ringing signal is generated is determined by setting values from the codecs 21 (1) and 22 (2). .

  When two incoming calls occur simultaneously in the gateway device 1 of this embodiment when none of the telephone communication devices connected to the line ports L1, L2, L3, and L4 is in use, the CPU 10 For example, instructs the codec 21 (1) of the line port unit 20 to send ringing signals to the line port L1 and the line port L2.

  The codec 21 (1) generates and transmits a ringing signal to the line I / F circuit 22 (1) and the line I / F circuit 22 (2) in accordance with an instruction from the CPU 10. Instruct. In response to this, in the line I / F circuit 22 (1), its own ringing signal generator 221 (1) generates the ringing signal of the reference phase and sends it to the line port L1, and at the same time, the line I / F. In the F circuit 22 (2), the ringing signal generator 221 (2) generates a ringing signal shifted by 90 degrees with respect to the reference phase and sends it to the line port L2.

  As a result, the ringing signal sent from the line I / F circuit 22 (1) and the ringing signal sent from the line I / F circuit 22 (2) are out of phase with each other by 90 degrees. Signal peaks do not overlap, and an instantaneous increase in current consumption can be prevented.

  FIG. 4 is a diagram for explaining a change in current consumption when the ringing signals having the same ringing timing but having the phases shifted by 90 degrees are output simultaneously. In the case of the example shown in FIG. 4, for example, the waveform shown in FIG. 4A is a waveform of a ringing signal (ringer voltage) generated by the line I / F circuit 21 (1), and is shown in FIG. 4B. The waveform of the ringing signal (ringer voltage) generated by the line I / F circuit 21 (2) is shown in FIG.

  As can be seen from the comparison between the waveform of FIG. 4A and the waveform of FIG. 4B, the peaks of both waveforms do not overlap because they are 90 degrees out of phase with each other. Therefore, as shown in FIG. 4C, a case where the consumption current increases instantaneously does not occur, and the magnitude of the consumption current is relatively low and substantially constant during ringing.

  Here, the case where a telephone communication device connected to any of the line ports L1, L2, L3, and L4 is not used has been described as an example. However, in practice, a telephone terminal connected to any of the line ports L1, L2, L3, and L4 may be used for a call. In this case, the CPU 10 knows which line port is connected to the telephone terminal.

  Therefore, the CPU 10 controls the codecs 21 (1) and 22 (2) so as to send ringing signals to vacant line ports that are not used for communication. For example, in the case of the example shown in FIG. 3, a case is considered where the telephone terminal connected to the line port L1 performs telephone communication and the other line ports are free.

  As a first method in this case, the CPU 10 controls the codec 21 (1) to generate a ringing signal shifted 90 degrees with respect to the reference phase in the line I / F circuit 22 (2). At the same time, the codec 21 (2) is controlled to generate a reference phase ringing signal in the line I / F circuit 22 (3) and sent to the line port L3.

  As a second method, the CPU 10 controls the codec 21 (2) to generate a ringing signal having a reference phase in the line I / F circuit 22 (3) and sends it to the line port L3. At the same time, a ringing signal shifted by 90 degrees with respect to the reference phase is generated in the line I / F circuit 22 (4) and is sent to the line port L4.

  By using either of these first and second methods, in this example, the ringing timing is the same, but two ringing signals whose phases are shifted from each other by 90 degrees are generated simultaneously. Can be sent to different line ports. In this case, the relationship between the two ringing signals and the current consumption is as shown in FIG. 4, while preventing an instantaneous increase in the current consumption and appropriately receiving each of the two incoming calls simultaneously. Be able to be notified.

  When the line port L2 is used, the line port L1 and the line port L4, or the line port L3 and the line port L4 are used. A line port that outputs a ringing signal different by 90 degrees is specified, and the line I / F circuit is controlled via the codec of the line port.

  Further, the codec 23, line I / F unit 24, and line ports L5, L6, L7, and L8 of the line port unit 20 also include the codec 23, line I / F unit 24, and line port described with reference to FIG. It is comprised similarly to the part which consists of L5, L6, L7, and L8. Therefore, even when there are a plurality of line ports used for telephone communication, by considering eight line ports L1 to L8, a line port that outputs a ringing signal whose phases are different from each other by 90 degrees is selected more flexibly. To be able to.

[Responding to the case where more than two incoming calls occur simultaneously]
By the way, as described above, the ringing timing is the same, but by using ringing signals whose phases are 90 degrees different from each other, even if two incoming calls occur at the same time, power consumption is instantaneous. It is possible to notify each of the two incoming calls without delay without increasing the current.

  However, although the probability of occurrence is low, there is a possibility that three incoming calls may occur simultaneously in the gateway device 1. In this case, even if the ringing signals whose phases are different from each other by 90 degrees are used, the peaks of the two ringing signals coincide with each other, so that the current consumption may increase instantaneously. Therefore, it is considered to use ringing signals whose phases are 90 degrees different from each other and also use ringing signals having different ringing timings.

  FIG. 5 is a diagram for explaining the configuration of the line port 20 that uses ringing signals whose phases are 90 degrees different from each other and also uses ringing signals having different ringing timings. As described above, the line port unit 20 includes the codec unit 21, the line I / F unit 22, the line ports L1 to L4, the codec unit 23, the line I / F unit 24, and the line ports L5 to L8. These parts are configured similarly. For this reason, also in this example, in order to simplify the description, the configuration of a part including the codec unit 21, the line I / F unit 22, and the line ports L1 to L4 will be described.

  As shown in FIG. 5, line I / F circuits 22 (1), 22 (2), 22 (3), and 22 (4) are provided corresponding to the respective line ports L1, L2, L3, and L4. The line I / F circuits 22 (1) and 22 (2) are provided with the codec 21 (1), and the line I / F circuits 22 (3) and 22 (4) are provided with the codec 21 (2). The structure provided with is as described with reference to FIGS.

  Even in this example, the ringing signal generators 221 (1), 221 (2) of the line I / F units 22 (1), 22 (2), 22 (3), 22 (4), In 221 (3) and 221 (4), as explained with reference to FIG. 7, a ringing signal (ringer voltage) that changes in a cycle of ringing for 1 second and stopping ringing for 2 seconds is formed.

  In the case of this example shown in FIG. 5, the ring signal generator 221 (1) of the line I / F circuit 22 (1) is similar to the ring signal generator 221 (1) shown in FIG. A reference phase ringing signal (ringing signal with no deviation from the reference phase (the deviation is 0 degree)) is generated. Also, the ringing signal generator 221 (2) of the line I / F circuit 22 (2) has a phase of 90 with respect to the reference phase, as in the ringing signal generator 221 (2) shown in FIG. Generate a ringing signal that is out of phase.

  On the other hand, the ringing signal generator (3) of the line I / F circuit 22 (3) is a ringing signal of the reference phase (ringing signal with no deviation from the reference phase (the deviation is 0 degree)). However, a ringing signal having a ringing timing delayed by 1 second from the ringing timing of the ringing signal of the ringing signal generators 221 (1) and 221 (2) is generated. Further, the ringing signal generator (4) of the line I / F circuit 22 (4) is a ringing signal delayed by 90 degrees with respect to the reference phase, but the ringing signal generators 221 (1) and 221 (2) A ringing signal having a ringing timing delayed by 1 second from the ringing timing of the ringing signal is generated.

  Therefore, in the configuration shown in FIG. 5, the ring signal generator 221 (1) of the line I / F circuit 221 (1) and the ring signal generator 221 (3) of the line I / F circuit 221 (3) Both generate the reference phase ringing signal, but the ringing timing is different as described with reference to FIG.

  Also, the ringing signal generator 221 (2) of the line I / F circuit 221 (2) and the ringing signal generator 221 (4) of the line I / F circuit 221 (4) are both relative to the reference phase. The ringing signal is generated by 90 degrees, but the ringing timing is different as described with reference to FIG.

  As a result, the peaks do not overlap each other, the current consumption is relatively low and can be kept constant at all times, and a maximum of four different ringing signals can be generated simultaneously. Therefore, when none of the four line ports L1, L2, L3, and L4 is in use, even if four incoming calls occur simultaneously, the different lines are set so that the peaks do not overlap. A ringing signal is supplied to the port, and each of the four incoming calls simultaneously can be appropriately notified to the user through a telephone communication device connected to a different line port.

  The configuration shown in FIG. 5 is an example. Therefore, for example, the ringing signal generation unit 221 (1) generates a ringing signal having a reference phase (ringing signal having no deviation from the reference phase (the deviation is 0 degree)) and generating the ringing signal generation unit 221 (2 ) Is a ringing signal of the reference phase (ringing signal with no deviation from the reference phase (the deviation is 0 degree)), but the ringing signal generated by the ringing signal generator 221 (1) is the ringing timing. To generate different ringing signals.

  The ringing signal generator 221 (3) generates a ringing signal whose phase is shifted by 90 degrees with respect to the reference phase, and the ringing signal generator 221 (4) has a phase shifted by 90 degrees with respect to the reference phase. Although it is a ringing signal, a ringing signal having a ringing timing different from the ringing signal generated by the ringing signal generation unit 221 (1) is generated.

  As described above, in the line I / F circuit connected to the same codec, the ringing signal having the same phase but the ringing timing is different, and the line I / F circuit having a different codec is used. You may make it generate the ringing signal from which a phase differs 90 degree | times mutually.

  Further, the codec 23, line I / F unit 24, line ports L5, L6, L7, and L8 of the line port unit 20 also include the codec 21, line I / F unit 22, line port described with reference to FIG. It is comprised similarly to the part which consists of L1, L2, L3, and L4. Therefore, even if there are a plurality of line ports used for telephone communication, by considering eight line ports L1 to L8, ringing with different phases and ringing timings so that peaks do not overlap more flexibly A signal can be generated.

[Modification]
In the mobile terminal device 1 of the above-described embodiment, as shown in FIGS. 3 and 5, the line I / F circuits 22 (1) to 22 (4) provided for the respective line ports L1 to L4. Each of these is provided with ringing signal generators 221 (1) to 221 (4). However, it is not limited to this.

  For example, instead of providing a ringing signal generation unit for each line I / F circuit, a ringing signal generation unit that is used in common, and that generates a ringing signal of a reference phase, A second ringing signal generation for generating a ringing signal whose phase is shifted by 90 degrees with respect to the reference phase is provided in the gateway device 1.

  When two incoming calls occur at the same time, a line port that supplies (adds) ringing signals whose phases generated by the first and second ringing signal generation units are 90 degrees different from each other is controlled by the CPU 10. Select and switch. For example, the ringing signal generated by the first ringing signal generator is supplied to the line port L1, and the ringing signal generated by the second ringing signal generator is supplied to the line port L2. The signal supply destination is switched by the function of the CPU 10.

  In this way, the number of ringing signal generation units can be minimized by enabling the supply destination of the ringing signal generated by the first and second ringing signal generation units to be switched by software executed in the CPU 10. Is possible.

  When both the phase and the ringing timing are taken into consideration, the first ringing signal generator that generates the ringing signal of the reference phase and the ringing signal that is 90 degrees out of phase with the reference phase are generated. In addition to the generation of the second ringing signal, the third ringing signal generation unit generates the ringing signal that is the ringing signal of the reference phase but whose ringing timing is different from the ringing timing generated by the first ringing signal generation unit. And a fourth ringing signal generation that generates a ringing signal whose ringing timing is different from the ringing timing generated by the second ringing signal generation unit. Is provided. Then, by controlling the supply destination of the ringing signal generated by these first to fourth ringing signal generation units, four incoming calls are generated at the same time as in the case described with reference to FIG. Even if this is the case, this can be dealt with.

[Others]
If it is only necessary to prevent the peaks of the ringing signal from overlapping, a shift smaller than 90 degrees may be caused, for example, 45 degrees and 60 degrees, or 135 degrees, A deviation larger than 90 degrees may be caused, such as 150 degrees. However, in order to keep the current consumption constant at a relatively low state at all times, it is most efficient when the phases are shifted from each other by 90 degrees.

  Therefore, for example, even when the mutual phase shift is in the vicinity of 90 degrees, such as 88 degrees, 89 degrees, 91 degrees, 92 degrees, etc., it is slightly relative to 90 degrees, such as 80 degrees, 100 degrees, etc. Even in the case of deviation, if the consumption current can be kept constant at substantially the same level as when the ringing signals whose phases are shifted by 90 degrees are generated at the same time, the deviation of the phases is It can be considered that it is the same as 90 degrees.

  In the above-described embodiment, the case where the present invention is applied to the gateway device 1 having 8 port ports has been described as an example. However, the number of line ports is not limited to 8 ports. The present invention can be applied to 4 ports or 12 ports. That is, the present invention can be applied to a gateway device having two or more line ports.

  In the above-described embodiment, the case where the present invention is applied to a gateway device has been described as an example. However, it is not limited to this. For example, the present invention can be applied to a so-called main device used when a private telephone exchange network is constructed. In other words, the present invention can be applied to various telephone communication devices that simultaneously receive a plurality of incoming calls from a wide area network, generate ringing signals corresponding to them, and send them to different line ports.

It is a figure for demonstrating an example of the communication system formed using the gateway apparatus with which one Embodiment of this invention was applied. It is a block diagram for demonstrating the structural example of the gateway apparatus 1 of embodiment. It is a figure for demonstrating the structure of the line port part 20 which generates the ringing signal from which a phase mutually differs 90 degree | times. It is a figure for demonstrating the change of the consumption current at the time of making it output simultaneously the sounding signal by which the sounding timing was the same, but the phase shifted 90 degree | times mutually. It is a figure for demonstrating the structure of the line port 20 which used the ringing signal from which a phase mutually differs 90 degree | times, and also used the ringing signal from which ringing timing differs. It is a figure for demonstrating the change of the consumption current when the ringing signal with the same ringing timing is generated. It is a figure for demonstrating the case where two ringing signals from which ringing timing differs are sent.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Gateway apparatus, 10 ... CPU, 11 ... WAN port, 12 ... I / F, 13 ... LAN port, 14 ... I / F, 15 ... Memory part, 16 ... LED part, 17 ... Initialization switch, 18 ... Clock Circuit, 19 ... I / F, 20 ... Line port part, 21, 23 ... Codec, 21 (1), 21 (2) ... Codec, 23 (1), 23 (2) ... Codec, 22, 24 ... Line I / F section, 22 (1) to 22 (4) ... line I / F circuit, 24 (1) to 24 (4) ... line I / F circuit, L1 to L8 ... line port, 221 (1) to 221 ( 4) ... Round signal generator

Claims (6)

A communication interface means to which a plurality of lines for telephone communication can be connected;
A plurality of connection terminals for analog telephone communication to which telephone communication devices are connected;
Ringing signal generating means for generating first and second ringing signals whose phases are different from each other by 90 degrees;
Control means for controlling the first ringing signal and the second ringing signal to be output from different connection ends when a plurality of incoming calls are received simultaneously through the communication interface unit. A ringing signal generator. The ringing signal generating device according to claim 1,
The ringing signal generating means is provided for each of a part of the plurality of connection ends, and generates a first ringing signal generating unit and the remaining of the plurality of connection ends. And a second ringing signal generator for generating the second ringing signal. The ringing signal generating device according to claim 2,
There are a plurality of the first ringing signal generators, and some of the first ringing signal generators and the remaining first ringing signal generators receive first ringing signals having different ringing timings. Generate
There are a plurality of second ringing signal generation units, and some of the second ringing signal generation units and the remaining second ringing signal generation units receive second ringing signals having different ringing timings. A ringing signal generating device characterized by generating the ringing signal. A method for generating a ringing signal used in a communication device comprising a communication interface means capable of connecting a plurality of telephone communication lines and a plurality of connection terminals for analog telephone communication to which the telephone communication devices are connected. ,
When a plurality of incoming calls are received simultaneously through the communication interface unit, the ringing signal generating unit generates first and second ringing signals whose phases are different from each other by 90 degrees, and outputs the first and second ringing signals from different connection ends. A ringing signal generation method characterized by: The ringing signal generation method according to claim 4,
The ringing signal generating means is provided for each of a part of the plurality of connection ends, and generates a first ringing signal generating unit and the remaining of the plurality of connection ends. And a second ringing signal generator for generating the second ringing signal. The ringing signal generation method according to claim 1, further comprising: The ringing signal generation method according to claim 5,
There are a plurality of the first ringing signal generators, and some of the first ringing signal generators and the remaining first ringing signal generators receive first ringing signals having different ringing timings. Generate
There are a plurality of second ringing signal generation units, and some of the second ringing signal generation units and the remaining second ringing signal generation units receive second ringing signals having different ringing timings. A ringing signal generation method characterized by generating the ringing signal.

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