JP5024035B2 - PTT remote control device, hands-free call system, and hands-free call method - Google Patents

Description

  The present invention relates to a hands-free call system for a portable phone having a simplex call function.

  A portable communication device having a simplex communication function has a PTT switch (PTT button) that outputs a PTT (Push To Talk) signal for switching a transmission / reception state, and an operator presses the PTT button when speaking. Then, the talk starts after switching from the reception standby state to the transmission state. By the way, when using such a portable telephone for special occupations such as industrial sites, transportation industry, police, security, etc., an operator uses a headset to make a hands-free call, and the portable telephone body Are widely used that are fixed to the waist or the like and provided with a PTT button on a cable connecting the headset and the portable telephone body.

  In such a hands-free call system, the PTT button is attached around the chest or belt of the operator. However, since the PTT button is provided at a certain position in the middle of the cable, the PTT button is not necessarily attached at an easy-to-operate place. In some cases, the operation is inconvenient. On the other hand, a jack is provided that allows only the PTT switch signal to be extracted from the headset plug connected to the portable telephone body, and a plug connected only to the PTT switch is provided so that the position of the headset cable is not affected. A system has been proposed that allows a PTT button to be attached to a desired location (see Patent Document 1).

  However, in such a system, two cables, a headset cable and a PTT button cable, are drawn from the portable telephone body. The existence of such cables has problems such as obstructing work, failure due to cable breakage, and work becoming dangerous due to entanglement with the arm and body. To reduce the influence of such problems, cables Therefore, it is necessary to locate the portable phone main unit close to the PTT button so as not to get in the way.

JP-A-9-17297

  Therefore, in view of the above-mentioned situation, the present invention intends to solve the problems such as the cable being in the way of work, failure due to cable disconnection, danger of work, etc., improving convenience, failure and The point is to provide a hands-free call system for a portable telephone with a simplex call function capable of preventing accidents.

  In order to solve the above-mentioned problems, the present invention provides a short-range wireless communication unit that can be connected to a portable telephone body having a simplex communication function for switching a transmission / reception state to make a call, and the portable type A PTT switch for outputting a PTT signal for switching a transmission / reception state of the telephone body, and a PTT signal transmission processing means for transmitting the PTT signal from the short-range wireless communication unit to the portable telephone body. A PTT remote control device for a hands-free call system was constructed.

  Here, a first voice data transmission / reception processing means for transmitting / receiving voice data to / from the portable telephone body through the short-range wireless communication unit, and a speaker / microphone connected via a cable or a short-range wireless communication unit It is preferable to further include second audio data transmission / reception processing means for transmitting / receiving audio data to / from the terminal.

  In addition, the portable telephone body is a mobile phone having both a simplex communication function and a duplex communication function, and the communication method of the portable telephone body is switched from simplex to duplex. It is preferable to further include a call switch for outputting a system switching signal and a system switching signal transmission processing means for transmitting the system switching signal from the short-range wireless communication unit to the portable telephone body. In this case, the PTT More preferably, the switch also serves as the call switch.

  Furthermore, it is preferable to have an attachment means for attaching to the body of an operator wearing the speaker / microphone terminal.

  The present invention also relates to a portable communication device main body having a simplex communication function for switching a transmission / reception state, a PTT remote control device capable of short-range wireless communication with the portable communication device main body, and the PTT remote control device. And a speaker / microphone terminal connected via a cable or a short-range wireless communication unit, wherein the PTT remote control device can be connected to the portable telephone main unit at a short distance A wireless communication unit, a PTT switch for outputting a PTT signal for switching a transmission / reception state of the portable telephone body, and a PTT signal transmission processing means for transmitting the PTT signal from the short-range wireless communication unit to the portable telephone body. There is also provided a hands-free call system characterized by comprising the above.

  Here, between the speaker / microphone terminal and the first audio data transmission / reception processing means for transmitting / receiving audio data through the short-range wireless communication unit between the PTT remote controller and the portable telephone body. It is preferable to include second audio data transmission / reception processing means for transmitting / receiving audio data.

  Further, the portable telephone main body is a mobile phone having a simplex communication function and a duplex communication function, and the PTT remote control device uses a simplex communication method of the portable telephone main body. It is preferable to further include a call switch that outputs a method switching signal for switching from duplex to duplex, and a method switching signal transmission processing means for transmitting the method switching signal from the short-range wireless communication unit to the portable telephone body. In particular, it is preferable that the PTT switch also serves as the call switch.

  In the case of a system including such a call switch, the speaker / microphone terminal can be connected between the portable telephone main body and the PTT remote control device, and the portable telephone main body. Is a preferred embodiment that includes voice data transmission / reception processing means for transmitting / receiving voice data to / from the portable telephone main unit directly without passing through the PTT remote control device in a duplex communication state.

  The speaker / microphone terminal is preferably a bone conduction speaker / microphone terminal provided with at least a bone conduction speaker, in particular, a bone conduction speaker / microphone terminal provided with a bone conduction speaker and a bone conduction microphone.

  According to the present invention as described above, since the PTT signal can be transmitted from the PTT remote control device to the portable telephone body via the short-range wireless communication unit, the PTT button is attached to an appropriate place where it is easy to operate. As a result, the convenience is improved and there is no cable that interferes with the work and causes a failure or an accident, so that the workability can be improved and the failure or the accident can be prevented.

  Also, if the mobile phone body is a mobile phone that has both simplex and duplex communication functions, the mobile phone's call system can be changed from simplex to duplex in the PTT remote control device. Since a call switch for outputting a method switching signal for switching to a system and a method switching signal transmission processing means for transmitting the method switching signal from the short-distance wireless communication unit to the portable telephone body, the PTT remote control device is operated. This makes it possible to switch to duplex communication during simplex communication, further improving convenience.

  In addition, since the speaker / microphone terminal is a bone conduction speaker / microphone terminal provided with at least a bone conduction speaker, the bone conduction speaker / microphone can be used in situations where there is a high level of noise or where it is necessary to listen to surrounding sounds with the ear. It is possible to make a call reliably.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a diagram showing an overall configuration of a hands-free call system S according to the present invention. FIGS. 1 to 5 show a first embodiment, and FIGS. 6 to 8 show a second embodiment. ) Is a portable telephone body, 2 is a PTT remote control device, and 3 is a speaker / microphone terminal.

  As shown in FIG. 1, the hands-free call system S of the present invention includes a portable telephone body 1 having a simplex communication function for switching a transmission / reception state to make a call, and the portable telephone body 1. A PTT remote control device 2 that is capable of distance wireless communication and transmits a PTT signal that switches a transmission / reception state by pressing the PTT button 21 to the portable telephone main unit 1, and the PTT remote control device 2 and a cable or a near field communication unit And a speaker / microphone terminal 3 connected through the PTT remote control device 2 as shown in FIG. 5, with the portable telephone main body 1 placed in, for example, a pocket or bag. It is possible to make a call without interfering with the cable by attaching to the location and operating the PTT button.

  As long as the portable telephone main unit 1 has a PTT function in addition to the conventionally known portable radio and transceiver, a portable telephone, a PHS (Personal Handyphone System), a PDA (Personal Various mobile terminals such as Digital Assistant (personal information terminal), notebook computer, and digital camera can be used. The speaker / microphone terminal 3 can employ various types such as a headset type, an ear hook type, an earphone type, and a helmet built-in type. In this example, a head, particularly a head including a bone conduction microphone 31 and a bone conduction speaker 32 is used. An example using a set is given.

  The unit used for short-distance wireless communication between the portable telephone main unit 1, the PTT remote control device 2 and the speaker / microphone terminal 3 uses a 2.4 GHz ISM (Industrial Scientific Medical) band that does not require a license for the carrier frequency. In the following embodiment, an example using a low-cost Bluetooth (registered trademark) wireless unit is given, but the present invention is not limited to this, and for example, an “IrDA” type infrared data communication module is provided. Various methods can be employed depending on the usage situation.

  First, a first embodiment of the present invention will be described based on FIGS.

  The portable telephone main unit 1 has a conventionally known transceiver configuration, and as shown in FIG. 2, an antenna 10, a transmission / reception selector switch 11, a wireless communication circuit 12, a control unit 13, a PTT switch (PTT button on the main unit side) 14) and a speaker / microphone 15 on the main body side, and in this example, a Bluetooth wireless unit 16 is externally connected as a short-range wireless communication unit. Specifically, the Bluetooth wireless unit 16 is provided in a Bluetooth adapter 17 that is cable-connected from the outside via a plug. However, as shown in the second embodiment, the Bluetooth wireless unit 16 is built in the portable telephone main unit 1. Of course, it is also good.

  The control unit 13 includes a microcomputer that performs various processes using a program stored in a memory. The control unit 13 receives a PTT signal and switches transmission / reception, and a voice signal received from the wireless communication circuit is transmitted to the speaker / microphone 15. An audio processing unit 13b that outputs to the wireless communication circuit 12 an audio signal that is output to the speaker and received from the microphone of the speaker / microphone 15 is provided.

  As shown in FIG. 3, the PTT remote control device 2 includes a Bluetooth wireless unit 20 that can be connected to the portable telephone body 1 and a PTT switch that outputs a PTT signal that switches the transmission / reception state of the portable telephone body 1. The PTT button 21) and a control unit 22 are provided. The control unit 22 includes a microcomputer that performs various processes using programs stored in the memory. The PTT signal output by the operation of the PTT button 21 is transmitted from the Bluetooth wireless unit 20 to a portable phone call. A first audio processing unit 22b that transmits and receives audio data through the Bluetooth wireless unit 20 between the PTT signal transmission processing unit 22a that wirelessly transmits to the main unit 1 and the portable telephone main unit 1, and a speaker / microphone terminal A second audio processing unit 22c for transmitting / receiving audio data to / from 3 It is at least equipped. The Bluetooth wireless unit 20 of the PTT remote controller 2 and the Bluetooth wireless unit 16 of the portable telephone main unit 1 are paired with a profile or a serial number more reliable than the profile before use.

  When the PTT button 21 is pressed on the PTT remote controller 2, the PTT signal is transmitted from the Bluetooth wireless unit 20 to the portable telephone main unit 1 by the PTT signal transmission processing unit 22 a, and the portable telephone main unit 1 is connected to the Bluetooth wireless unit 16. The transmission / reception switching processing unit 13a performs transmission / reception switching of the transmission / reception switching switch 11 in response to the PTT signal. When the operator speaks from the speaker / microphone terminal 3 in this state, the first audio processing unit 22b of the PTT remote control device 2 receives the audio data received from the speaker / microphone terminal 3 by the second audio processing unit 22c. The voice transmitted to the telephone main unit 1 and output from the voice processing unit 13b to the wireless communication circuit 12 is transmitted from the antenna 10 from the transmission / reception selector switch 11 that is switched to the transmission side.

  In a state where the PTT button 21 is released, the transmission / reception selector switch 11 is maintained in the reception state, and only reception is possible. When receiving voice from another telephone, the voice processing unit 13b transmits the voice data to the PTT remote control device 2 via the Bluetooth wireless unit 16, and the first voice processing unit 22b of the PTT remote control device 2 receives the voice data. Then, the audio data is transmitted to the speaker / microphone terminal 3 by the second audio processing unit 22c, and the operator can hear the audio from the speaker / microphone terminal 3.

  As described above, the first and second audio processing units 22b and 22c of the PTT remote control device 2 have a function of relaying the exchange of audio data between the portable telephone main unit 1 and the speaker / microphone terminal 3. It is also preferable to provide a memory for temporarily storing voice data to be relayed. In particular, the first voice processing unit 22b always sends and receives voice regardless of the transmission / reception switching status of the portable telephone main body 1. However, when the PTT button 21 is pressed, the PTT signal is sent to the portable telephone main body 1. Audio data may be transmitted only when is transmitted.

  The PTT remote control device 2 is preferably provided with attachment means 23 for attaching to the body of the operator wearing the speaker / microphone terminal 3 so that the PTT remote control device 2 is not dropped and is easy to operate. Although the string 24 is provided, it is also preferable to provide a band for wearing on a finger, arm, shoulder, etc., a pin attached to clothes, or the like.

  As shown in FIG. 4, the speaker / microphone terminal 3 receives the Bluetooth wireless unit 30 that can be connected to the PTT remote control device 2, the microphone 31, the speaker 32, and the PTT remote control device 2 via the Bluetooth wireless unit 30. The control unit 33 includes an audio processing unit 33 a that outputs an audio signal to the speaker 32 and transmits the audio signal received from the microphone 31 from the Bluetooth wireless unit 30 to the PTT remote control device 2. The Bluetooth wireless unit 30 of the speaker / microphone terminal 3 and the Bluetooth wireless unit 20 of the PTT remote controller 2 are paired in advance by a profile before use.

  The Bluetooth wireless unit 30 and the control unit 33 may be omitted, and the microphone 31 and the speaker 32 may be directly connected to the PTT remote control device 2 with a cable. In this case, the PTT remote control device 2 and the speaker / microphone terminal 3 are connected to each other via a cable. However, since at least the PTT remote control device 2 and the portable telephone body 1 are cableless, If the location of the remote control device 2 is devised, it is possible to easily prevent the cable from getting in the way or from being disconnected.

  In this embodiment, the PTT remote control device 2 is provided with the first audio processing unit 22b and the second audio processing unit 22c, and the PTT remote control device 2 functions as a voice data repeater. As in the case of duplex communication in the second embodiment to be described later, it is also possible to configure so that voice data is directly transmitted and received between the speaker / microphone terminal 3 and the portable telephone body 1. It is.

  Next, a second embodiment of the present invention will be described based on FIGS.

  In the present embodiment, the portable telephone body 1 is a mobile phone having both a simplex communication function and a duplex communication function. As shown in FIG. A call switch 25 for outputting a method switching signal for switching the communication method of the main unit 1 from simplex to duplex, and a method for transmitting the method switching signal from the short-range wireless communication unit to the portable telephone main unit. And a switching signal transmission processing unit 22d. As a result, the operator can switch between the two call functions.

  In this example, the PTT button 21 also serves as the call switch 25, and the ring tone for duplex communication is transmitted from the portable telephone main unit 1 to the speaker / microphone terminal 3 via the PTT remote control device 2. When the operator presses the PTT button 21 in the state of being on, the call switch 25 is turned on, and the method switching signal transmission processing unit 22d of the control unit 22 transmits the method switching signal to the portable telephone body 1 via the Bluetooth wireless unit 20. It is sent to. Of course, a call switch 25 can be provided separately from the PTT button 21.

  As shown in FIG. 7, the portable telephone main body 1 is provided with a telephone-side call switch 18, and the control section 13 is provided with a telephone system switching processing section 13 c. The telephone communication system switching processing section 13 c is connected to the PTT remote controller. The communication method is switched from simplex to duplex by receiving the method switching signal from the device 2, and the voice processing unit 13b and the voice processing unit 33a on the speaker / microphone terminal 3 side perform the following call for FIG. As shown by the arrow on the left side, a call is performed by transmitting / receiving audio data to / from the speaker / microphone terminal 3 directly by the Bluetooth wireless units 16 and 30 without using the PTT remote control device 2. The Bluetooth wireless units 16 and 30 are paired in advance with a hands-free profile before use.

  In addition, the ring tone for duplex communication is directly transmitted from the portable telephone main unit 1 to the speaker / microphone terminal 3, and the PTT signal is generated when the operator presses the PTT button 21 (call switch 25) in this state. However, it may be configured such that the call mode switching processing unit 13c of the portable telephone main body 1 regards this as a mode switching signal and switches the call mode from simplex to duplex. In this case, the PTT button 21 also serves as the call switch 25 and the PTT signal also serves as the system switching signal.

  The PTT remote control device 2 is configured in a vertically long and substantially oval shape so as to be easily gripped, and gripping uneven portions are provided on the left and right sides so as to fit fingers. Also in the first embodiment, it is needless to say that such a shape is preferable in that it is easier to grip.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can of course be implemented in various forms without departing from the gist of the present invention.

Explanatory drawing which shows the outline of the whole structure of the hands-free call system which concerns on 1st Embodiment of this invention. The block diagram which similarly shows the structure of the portable telephone main body of a hands-free call system. The block diagram which similarly shows the structure of a PTT remote control device. The block diagram which similarly shows the structure of a speaker microphone terminal. Explanatory drawing which similarly shows the use condition of a hands-free call system. Explanatory drawing which shows the outline of the whole structure of the hands-free call system which concerns on 2nd Embodiment of this invention. The block diagram which similarly shows the structure of the portable telephone main body of a hands-free call system. The block diagram which similarly shows the structure of a PTT remote control device.

Explanation of symbols

S Hands-free call system 1, 1A portable telephone body 2 Remote control device 3 Speaker / microphone terminal 10 Antenna 11 Transmission / reception switching switch 12 Wireless communication circuit 13 Control unit 13a Transmission / reception switching processing unit 13b Voice processing unit 13c Calling mode switching processing unit 14 PTT button 15 Speaker / microphone 16 Bluetooth wireless unit 17 Bluetooth adapter 18 Call switch 20 Bluetooth wireless unit 21 PTT button 22 Control unit 22a PTT signal transmission processing unit 22b First audio processing unit 22c Second audio processing unit 22d Method switching signal Transmission processing unit 23 Attaching means 24 String 25 Call switch 30 Bluetooth wireless unit 31 Microphone 32 Speaker 33 Control unit 33a Audio processing unit

Claims (11)

A short-range wireless communication unit that can be connected to a portable telephone body having a simplex call function for making a call by switching the transmission / reception state;
A PTT switch for outputting a PTT signal for switching a transmission / reception state of the portable telephone body;
PTT signal transmission processing means for transmitting the PTT signal from the short-range wireless communication unit to the portable telephone body;
First audio data transmission / reception processing means for transmitting / receiving audio data to / from the portable telephone body through the short-range wireless communication unit;
Second audio data transmission / reception processing means for transmitting / receiving audio data to / from a speaker / microphone terminal connected through the short-range wireless communication unit;
And connecting and outputting the PTT signal together with the portable telephone body and the speaker / microphone terminal via a short-range wireless communication unit. A PTT remote control device for a hands-free call system, which relays exchange of voice data of a simplex call between a telephone body and a speaker / microphone terminal . The mobile phone body is a mobile phone having both a simplex call function and a duplex call function, and the method of switching the call mode of the mobile phone body from simplex to duplex a call switch for outputting a signal, PTT remote controller mode switching signal transmission processing means and further comprising and becomes claim 1, wherein transmitting the said type switching signal to the mobile phone conversation device body than the short-range wireless communication unit. The PTT remote control device according to claim 2, wherein the PTT switch also serves as the call switch. The PTT remote control device according to any one of claims 1 to 3 , further comprising attachment means for attaching to the body of an operator wearing the speaker / microphone terminal. A portable call device body having a call function of the simplex type a call by switching a reception state, and the portable call device body and short-range wireless communication capable PTT remote control device, the PTT remote control device and a near distance wireless communication A hands-free call system comprising a speaker and a microphone terminal connected through a unit,
The PTT remote control device
A short-range wireless communication unit connectable with the portable telephone body; and
A PTT switch for outputting a PTT signal for switching a transmission / reception state of the portable telephone body;
PTT signal transmission processing means for transmitting the PTT signal from the short-range wireless communication unit to the portable telephone body ;
First audio data transmission / reception processing means for transmitting / receiving audio data to / from the portable telephone body through the short-range wireless communication unit;
Second audio data transmission / reception processing means for transmitting / receiving audio data to / from the speaker / microphone terminal ,
The PTT remote control device is connected to the portable telephone body and the speaker / microphone terminal via a short-range wireless communication unit, thereby outputting and transmitting the PTT signal. A hands-free call system for relaying voice data exchange of a simplex call between the portable telephone body and the speaker / microphone terminal . The mobile phone main body is a mobile phone having both a simplex call function and a duplex call function, and the PTT remote control device changes the call method of the portable caller main body from simplex type to dual type. a call switch for outputting a mode switching signal for switching to the signal type, further comprising comprising claim 5, wherein the mode switching signal transmission processing means for transmitting said expression switching signal to the mobile phone conversation device body than the near field communication unit Hands-free calling system. The hands-free call system according to claim 6, wherein the PTT switch also serves as the call switch. The speaker / microphone terminal is connectable between the portable telephone main body and the PTT remote control device, respectively, and the PTT remote control device when the portable telephone main body is in a duplex communication state. The hands-free call system according to claim 6 or 7, further comprising voice data transmission / reception processing means for transmitting / receiving voice data to / from the portable telephone body directly without using a mobile phone. The hands-free call system according to any one of claims 5 to 8 , wherein the speaker / microphone terminal is a bone conduction speaker / microphone terminal including at least a bone conduction speaker. The hands-free call system according to any one of claims 5 to 8 , wherein the speaker / microphone terminal is a bone conduction speaker / microphone terminal including a bone conduction speaker and a bone conduction microphone.   A portable telephone main body having a simplex communication function for switching a transmission / reception state, a PTT remote controller capable of short-range wireless communication with the portable telephone main body, and a short-range wireless communication with the PTT remote controller A hands-free call method comprising a speaker / microphone terminal connected through a unit,
  The PTT remote control device is
  A short-range wireless communication unit connectable with the portable telephone body; and
  A PTT switch for outputting a PTT signal for switching a transmission / reception state of the portable telephone body;
  PTT signal transmission processing means for transmitting the PTT signal from the short-range wireless communication unit to the portable telephone body;
  First audio data transmission / reception processing means for transmitting / receiving audio data to / from the portable telephone body through the short-range wireless communication unit;
  Second audio data transmission / reception processing means for transmitting / receiving audio data to / from the speaker / microphone terminal,
  The PTT remote control device outputs and transmits the PTT signal in a state in which the PTT remote control device is connected to the portable telephone body and the speaker / microphone terminal via a short-range wireless communication unit. A hands-free call method comprising relaying voice data exchange of a simplex call between the portable telephone body and the speaker / microphone terminal.

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