JP2013038599A - Switchover control device and communication apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switchover control device and a communication apparatus, capable of switching to any one handset by detecting a current flowing by the connection to the handset.SOLUTION: The switchover control device and the communication apparatus include: a plurality of connection means capable of connecting to a plurality of types of handsets; and current monitoring means for detecting a current flowing in the connection means by the connection to the handset. Based on the current detection signal from the current monitoring means, switchover control means supplies a switchover control signal to switching means, so as to switch the connection means.

Description

  The present invention relates to a switching control device and a communication device. For example, the present invention can be applied to a switching control device that switches between handset connection and headset connection and a communication device.

  For example, in an operation platform system such as a command stand system or a reception stand system, a user can use either a handset type handset (hereinafter also referred to as a handset) or a headset type handset (hereinafter also referred to as a headset). Some have a voice system that performs voice communication by switching. The headset type handset is a headphone or an earphone to which a microphone is connected.

  In general, in a console system, a plurality of users exchange and use communication devices such as the same telephone. Whether to make a call using a handset or a call using a headset can be selected according to the user's preference. When making a handset call, the user connects the handset-type handset to a communication device, and the headset call is made. When performing the operation, the user uses the headset type handset by connecting it to the communication device.

  FIG. 2 is a configuration diagram showing a configuration of interface control in a conventional communication device. Conventionally, when a user switches from a handset call to a headset call, the user operates the terminal, and the CPU 71 switches and controls the selectors 41 and 42 based on a call switching signal from the terminal.

  Conventionally, as a technique for monitoring insertion and removal of a headset, for example, there is a technique described in Patent Document 1. In the technology described in Patent Document 1, a detection circuit is provided at a connection portion of a headset, the detection circuit monitors a voltage due to insertion / extraction of a headset jack, and a switching unit is connected to the headset based on a monitoring result of the detection circuit. It is to switch.

JP 2002-152365 A

  However, in the case of the conventional interface control configuration illustrated in FIG. 2, the user performs switching manually, and does not have a mechanism for monitoring the insertion / removal of the handset. For this reason, the communication device cannot monitor the insertion / removal of the handset. For example, there is a problem that the communication device cannot be switched to the headset call only by inserting the headset.

  Even if the technique described in Patent Document 1 described above is applied, the detection circuit directly detects the voltage based on the audio signal, so that the impedance changes, which may affect the audio quality.

  Therefore, for example, in a communication device capable of making a call using a plurality of types of handsets such as a handset and a headset, the connection of the handsets is monitored with a simple configuration, and switching to any handset is performed. There is a need for a switching control device and a communication device that can perform the above.

  In order to solve this problem, the first aspect of the present invention switches (1) a plurality of connection means for connecting to a plurality of types of transmitters, and (2) a connection means related to a call among the plurality of connection means. Switching means; (3) current monitoring means for monitoring current generated by conduction of any connection means; and (4) switching control means for providing a switching control signal to the switching means based on a current detection signal from the current monitoring means. And a switching control device characterized by comprising:

  According to a second aspect of the present invention, in a communication device having a switching control device that switches to connection with any of the plurality of types of transmitters, the switching control device corresponds to the switching control device of the first aspect of the present invention. It is a communication device characterized by being a thing.

  According to the present invention, with a simple configuration, it is possible to monitor at least the current generated by the connection of the transmitter and switch the connection configuration of the transmitter / receiver.

It is a block diagram which shows the structure of the interface control which the communication apparatus of embodiment has. It is a block diagram which shows the structure of the interface control in the conventional communication apparatus. It is explanatory drawing explaining the connection switching method of the handset in the communication apparatus of embodiment.

(A) 1st Embodiment Below, it demonstrates, referring drawings for 1st Embodiment of the switching control apparatus and communication apparatus of this invention.

  In the first embodiment, for example, a case where the present invention is applied to a communication device of a voice communication system included in an operation console system will be described as an example.

(A-1) Configuration of First Embodiment FIG. 1 is a configuration diagram illustrating a configuration of interface control included in the communication device of the embodiment.

  The communication device 10 is connected to, for example, a voice system such as a PBX of an operation console system and performs a call by a user. An existing system can be applied to the operation table system, and includes, for example, a user terminal, a communication device, a voice system such as a PBX, an operation table control device, and the like. Also, an existing system can be applied to an audio system such as PBX.

  The communication device 10 can be connected to a plurality of types of handsets. In the first embodiment, the communication device 10 can be connected to a handset-type handset and a headset-type handset, and the interface control of the communication device 10 switches between the handset-type handset and the headset-type handset. A telephone call using any handset is performed.

  In FIG. 1, the communication device 10 mainly includes an audio circuit unit 61 and a control circuit unit 62 as interface control means for connecting a handset.

  The voice circuit unit 61 is a voice communication processing unit and device that performs voice communication. The audio circuit unit 61 includes a connection terminal that can be connected to a plurality of types of handsets and headsets. The audio circuit unit 61 switches the connection configuration to the handset side or the headset side. Thus, the user can make a call by connecting any handset to the communication device 10.

  Here, the communication connector for the handset and the headset is not particularly limited, but the case of the modular plug type is exemplified in the first embodiment. That is, the communication device 10 includes a modular plug type jack, and the handset and the headset include a modular plug type plug.

  The modular plug format is a connector format consisting of 4W of audio of 2W (wire) for transmission and reception. The communication connector is not limited to the modular plug type, and for example, a pin plug jack type or the like can be applied.

  The audio circuit unit 61 includes a current monitoring unit 15 that monitors a current flow associated with the insertion or removal of the headset. Although a detailed description of the configuration of the current monitoring unit 15 will be described later, a current flowing in a conductive state can be obtained by inserting a headset and connecting a plug (connection terminal) of the headset to the connection terminals 21, 22 and 25. The current monitoring means 15 is for detecting. The current monitoring unit 15 gives a detection signal related to current detection to the control circuit unit 62.

  The voice circuit unit 61 switches to handset connection or headset connection based on a call switching signal from the control circuit unit 62.

  As shown in FIG. 1, the audio circuit unit 61 includes a control unit 5, selector units 41 and 42, amplifier circuit units 31 to 34, connection terminals 21 and 22 for transmitting headsets, and connection for receiving headsets. Terminal 25, connection terminals 23 and 24 for transmitting a handset, connection terminal 26 for receiving a handset, resistors R1, R2, R3, R4, R5, R7, R8, R9, light emitting element 11, and light receiving element 12 .

  The control unit 5 is a control processing unit or device that controls voice communication processing. For example, the control unit 5 is connected to a sound system such as PBX or performs a part of the function of the sound system. For example, the control unit 5 performs an outside line call and an extension line call.

  The selector units 41 and 42 switch the connection configuration of the connected handsets based on the call switching signal from the control circuit unit 62. The selector unit 41 switches the connection configuration on the transmission side, and the selector unit 42 switches the connection configuration on the reception side.

  The connection terminals 23, 24 and 26, the resistors R8 and R9, the amplification circuit unit 33, the amplification circuit unit 34, and the connection terminal 26 are audio circuit units for handsets. The audio circuit unit for handset corresponds to the interface configuration of existing communication equipment.

  When the handset is inserted into the communication device 10, if the connection terminal for transmitting the handset is connected to the connection terminals 23 and 24, a potential difference is generated and an operating current flows. The transmission signal from the handset is given to the amplification circuit unit 33 through the signal lines of the connection terminals 23 and 24. The signal amplified by the amplifier circuit unit 33 is given to the control unit 5 via the selector unit 41 and transmitted to the call destination. On the other hand, when a reception signal from the call destination to the handset is given to the control unit 5, the reception signal is given to the connection terminal 26 via the selector unit 42 and the amplification circuit unit 34, and is given to the handset receiver.

  The connection terminals 21 and 22, resistors R1, R2, R3, R4, R5, R7, light emitting element 11, light receiving element 12, amplification circuit section 31, amplification circuit section 32, and connection terminal 25 are an audio circuit for a headset. Part.

  The connection terminals 21 and 22 are connected to a headset transmission plug (connection terminal). The connection terminal 25 is connected to a headset receiving plug (connection terminal).

  The resistor R1 is connected to the power source and is connected to the resistor R2 and the resistor R3. When the connection terminal of the headset is not connected to the connection terminals 21 and 22 (that is, when the headset is not inserted), the current flows through the resistor R2 connected to the ground via the resistor R1. On the other hand, when the connection terminal of the headset is connected to the connection terminals 21 and 22 and becomes conductive, a potential difference is generated between the power source and the ground, and a current flows.

  The resistor R7 is a resistor that is grounded.

  The resistor R <b> 3 is connected to the light emitting element 11 and the amplifier circuit unit 31. When the headset is inserted, current flows to the light emitting element 11 via the resistor R3.

  The current monitoring unit 15 monitors the current flowing through the signal line 81 connected to the connection terminal 21, and provides a detection signal to the control circuit unit 62 when the current is detected.

  The current monitoring unit 15 includes a light emitting element 11 and a light receiving element 12. For example, the current monitoring unit 15 may be a photocoupler or the like that includes the light emitting element 11 and the light receiving element 12 in the housing and forms one circuit element.

  The light emitting element 11 is connected to the resistor R3 and the connection terminal 21. When the headset is inserted, the light emitting element 11 emits light by converting it into an electric signal light signal input via the resistor R3. For example, a light emitting diode or the like can be applied to the light emitting element 11.

  The light receiving element 12 is connected to a power source and a resistor R4. The resistor R4 is connected to the resistor R5 that is connected to the ground. The light receiving element 12 is turned on by the light emitted from the light emitting element 11, and a current flows through the resistor R4. For example, a photodiode, a phototransistor, or the like can be applied to the light receiving element 12.

  The resistor R4 is connected to the resistor R5 and the base terminal of the transistor 35 of the control circuit unit 62. The resistor R5 is connected to ground.

  The amplifier circuit unit 31 amplifies the transmission signal from the headset and supplies it to the selector unit 41.

  The amplifier circuit unit 32 amplifies the signal from the selector unit 42 and supplies the amplified signal to the connection terminal 25.

  Based on the detection signal from the audio circuit unit 61, the control circuit unit 62 performs switching control of handset connection or headset connection for the audio circuit unit 61.

  As shown in FIG. 1, the control circuit unit 62 includes a transistor 35 and resistors R4, R5, and R6.

  The transistor 35 has a base terminal connected to the resistor R 4, a collector terminal connected to the resistor R 6 to be connected to the power source and the selector units 41 and 42 through the signal line 83, and an emitter terminal grounded.

(A-2) Operation of the First Embodiment Next, the handset connection switching method of the first embodiment will be described with reference to the drawings.

  FIG. 3 is an explanatory diagram for explaining a connection switching method of the handset in the communication device 10.

  First, switching from handset connection to headset connection will be described.

  The communication device 10 is normally connected to a handset and performs a handset call. That is, normally, the headset is not inserted into the connector of the communication device 10. Therefore, no current flows through the signal line 81.

  At this time, since the light receiving element 12 of the current monitoring means 15 is OFF, no current flows through the base terminal of the transistor 35, and the transistor 35 is OFF. Accordingly, the potential of the signal line 83 that connects the collector terminal of the transistor 35 and the selector units 41 and 42 is at the H level.

  The headset is inserted into the connector of the communication device 10, and the connection terminals of the headset are connected to the connection terminals 21, 22 and 25.

  When the connection terminal for transmission of the headset is connected to the connection terminals 21 and 22, a potential difference is generated, and a current flows to the current monitoring means 15 via the resistors R1 and R3 (S101, S102).

  In the current monitoring unit 15, when the current is input to the light emitting element 11, the light emitting element 11 emits light. The light-receiving element 12 receives light emitted from the light-emitting element 11, and the light-receiving element 12 is turned on, and a current flows to the ground via the resistor R4, the base terminal of the transistor 35, the resistor R4, and the resistor 5 (S103).

  A current flows through the base terminal of the transistor 35, the transistor 35 is turned on, and a current flows toward the ground through the resistor R6 and the transistor 35 (S104).

  When the current is drawn in the direction shown in S104, the potential of the signal line 83 connected to the resistor R6 connected to the power supply is changed from the H level to the L level (S105). When the potential of the signal line 83 becomes L level, the selector units 41 and 42 switch the connection of the handset from the handset connection to the headset connection.

  Thus, when the current monitoring means 15 detects the current generated by the insertion of the headset, the selector units 41 and 42 can switch the connection of the handset to the headset connection.

  Next, switching from headset connection to handset connection will be described.

  If the headset is removed from the communication device 10 and the connection terminal for transmitting the headset is not connected to the connection terminals 21, 22, and 25, the connection is lost, so that no current flows through the current monitoring means 15.

  In the current monitoring means 15, since the light emitting element 11 does not emit light, the light receiving element 12 is turned OFF, and the current in the direction shown in S103 does not flow. Accordingly, the transistor 35 is turned off, and the potential of the signal line 83 connected to the resistor R6 connected to the power supply is changed from L level to H level. When the potential of the signal line 83 becomes H level, the selector units 41 and 42 switch the connection of the handset from the headset connection to the handset connection.

  In this way, when the headset is removed, the current monitoring unit 15 does not detect the current, so that the selector units 41 and 42 can switch the connection of the handset to the handset connection.

(A-3) Effect of the First Embodiment As described above, according to the first embodiment, the current detection unit detects the current due to the insertion and removal of the headset, so that the connection of the handset is connected to the headset. Or it can switch to handset connection. That is, in the past, the user manually switched the connection of the handset, but it can be automatically switched by inserting and removing the headset.

  In the first embodiment, since the detection circuit does not directly detect the voltage of the audio signal as in the technique described in Patent Document 1, the impedance does not change and the audio quality is not affected.

(B) Second Embodiment Next, a second embodiment of the switching control device and the communication device of the present invention will be described with reference to the drawings.

  In the second embodiment, the types of headsets connected to communication devices are limited.

  Since the configuration of the second embodiment is basically the same as that of the first embodiment, the second embodiment will be described with reference to FIGS.

  For example, there are dedicated headsets that are used for telephone calls in the console system, and headsets that are widely used in the market, such as those used for PCs and telephones. Further, for example, the headset includes an electret capacitor type, a power supply method type, and the like. As described above, there are different products such as a handset sensitivity and an operating current in the headset.

  As described above, when the type of headset to be used is limited, the current value is limited to a predetermined current value.

  For example, the current value may be limited so that the current monitoring unit 15 in FIG. 1 detects a current greater than or equal to a predetermined current value. That is, in the current monitoring unit 15, the current value emitted from the light emitting element 11 is limited, and the light emitting element 11 emits light when a current of a predetermined current value or more flows, and otherwise, the light emitting element 11. May not emit light.

  Further, for example, in FIG. 1, the resistance value of the resistor R4 may be set to a predetermined resistance value to limit the operating potential of the transistor 35. Thereby, even if a headset is inserted, since the transistor 35 is not turned on, switching of the handset can be restricted.

(C) Other Embodiments (C-1) When communication devices such as ordinary telephones are connected to a handset and a headset, they are often used in their connected form. In the stand system, there are cases where the same terminal is replaced and used at certain time periods. In this way, when a plurality of users use the same terminal and the present invention is applied, the terminal can be used by selectively using the handset and the headset depending on the usage mode of the user.

(C-2) In the first and second embodiments described above, the case where the communication device 10 is used for handset connection at the normal time is illustrated. Therefore, the current monitoring means is provided on the transmission connection side of the headset.

  However, when the communication device 10 is normally used for headset connection, a current monitoring unit may be provided on the transmission connection side of the handset.

  Further, current monitoring means may be provided on both the transmission connection side of the headset and the transmission connection side of the handset. In this case, the control circuit unit may determine whether the detection signal is generated from either the current monitoring unit on the headset side or the current monitoring unit on the handset side and switch the selector unit.

DESCRIPTION OF SYMBOLS 10 ... Communication apparatus, 61 ... Audio | voice circuit part, 62 ... Control circuit part,
15 ... Current monitoring means, 11 ... Light emitting element, 12 ... Light receiving element,
35 ... transistor,
21 and 22: Connection terminals for transmitting headsets,
23 and 24: Connection terminal for handset transmission,
25 ... Connection terminal for receiving headsets,
26: Connection terminal for receiving a handset,
31 to 34, amplifying circuit sections, 41 and 42, selector sections, R1 to R9, resistors.

Claims (3)

A plurality of connection means for connecting to a plurality of types of transmitters;
Among the plurality of connection means, a switching means for switching connection means related to a call;
Current monitoring means for monitoring current generated by conduction of any of the connection means;
A switching control device comprising: a switching control unit that provides a switching control signal to the switching unit based on a current detection signal from the current monitoring unit. The current monitoring means includes a light emitting element that emits light based on a current flowing through the connection means, and a light receiving element that outputs an electrical signal based on light emission of the light emitting element,
The switching control device according to claim 1, wherein the switching control means outputs the switching control signal in accordance with an electrical signal from the light receiving element.   In a communication device having a switching control device for switching to connection with any of the plurality of types of microphones, the switching control device corresponds to the switching control device according to claim 1 or 2. Communication equipment characterized by.

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