JPH11275663A - Communication equipment and multi-subscriber speech method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication equipment, with which multiple subscribers can speak each other through public speech and transceiver speech. SOLUTION: When a transceiver call is originated to a PHS terminal PS1 from another PHS (R) terminal PS3 (b), while the owner of the terminal PS1 makes public speech via a communication network 1 (a), the terminal PS1 shifts to the transceiver speech by reserving the public speech (c). When the terminal PS1 cancels the reservation of the public speech thereafter, three- subscriber speech is held among the PHS terminals PS1, PS2, and PS3 by a public speech and transceiver speech (d). In the three-subscriber speech, the terminal PS1 synthesizes the aural data of the terminals PS2 and PS1 and transmits the synthesized data to the terminal PS3, and at the same time, synthesizes the aural data of the terminals PS3 and PS1 and transmits the synthesized data to the terminal PS2 via a base station 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device and a multi-user communication method for performing a multi-user call using a public call, an extension call, and a transceiver call.

[0002]

2. Description of the Related Art Conventionally, a portable information terminal (for example, a PHS terminal: Personal Hand) which is carried by a user and mutually communicates voice and data with other terminals including a general home telephone.
y Phone System terminals) are known. These portable information terminals are connected to a communication line and wirelessly communicate with a base station (public base station, self-owned base station, master unit, etc.) so that they can communicate with similar terminals and other terminals connected to the communication line by voice. A public call or extension call for making a call, and / or a transceiver call (direct call between slave units) for directly making a wireless voice call between PHS terminals (slave units) registered with the same master unit (own base station). Are known.

[0003]

By the way, in the above-mentioned portable information terminal, in actual use, for example, it is possible to make another slave unit participate during a public call, or to communicate via a communication line during a transceiver call. A multi-party call in which a public call and a transceiver call are mixed, such as by making a device participate, is desired. However, in the conventional portable information terminal, the public call and the transceiver call are limited to a so-called two-party call only between two communication devices during the call, and a multi-party call in which the public call and the transceiver call are mixed. There is a problem that can not be performed.

Accordingly, an object of the present invention is to provide a communication device and a multi-party communication method capable of performing a multi-party communication in which a public communication and a transceiver communication are mixed.

[0005]

To achieve the above object, a communication device according to the first aspect of the present invention is a communication device for communicating via a base station and performing transceiver communication between terminals without passing through a harmful base station. In the device, a base station voice data receiving means for receiving voice data from a connection destination via a base station, a transceiver voice data receiving means for receiving voice data from a transceiver connection destination, and inputting voice data at its own terminal Voice input means, and voice data received by the base station voice data receiving means, voice data received by the transceiver voice data receiving means, and voice data received from the voice input means, and voice synthesizing means. Transmitting the voice data synthesized by the synthesizing means to a connection destination and a transceiver connection destination via a public base station. Stage and an output means for outputting the audio data synthesized by said synthesizing means as a voice, the base station audio data receiving unit, a transceiver audio data receiving means, said speech input means, said synthesizing means, said transmitting means,
And control means for operating the output means in a time-division manner.

In a preferred aspect, the synthesizing means synthesizes voice data from a connection destination via a base station with voice data input by the terminal itself. Synthesizing means, second synthesizing means for synthesizing voice data from the transceiver connection destination and voice data input at the terminal itself, and voice data from the connection destination via the base station and from the transceiver connection destination. A third synthesizing unit for synthesizing the audio data and the audio data input by the own terminal, wherein the transmitting unit transmits the audio data synthesized by the first synthesizing unit to a transceiver connection destination; And a second transmitting means for transmitting the voice data synthesized by the second synthesizing means to a connection destination via a base station.

In a preferred embodiment, the output means outputs the audio data synthesized by the third synthesizing means as audio.

According to another aspect of the present invention, there is provided a communication device for holding a call with a currently connected one of a connection destination and a transceiver connection destination via a base station. Holding means, after the call is held by the holding means, connecting means for connecting to a connection destination other than the current call, release means for releasing the call held by the holding means, and when the call is released by the release means And a simultaneous call control unit for performing a simultaneous call between the connection destination that is already in a call and the connection destination connected by the connection unit.

In a preferred embodiment, the connection means may be connected to a connection destination received during a current call.

In a preferred embodiment, the connection means may be connected to a connection destination called from the terminal.

In a preferred embodiment, the communication device further comprises a call control means for enabling a call with a connection destination connected by the connection means while the call is held by the holding means. You may.

[0012] To achieve the above object, a multi-party communication method according to the invention of claim 8 is a communication device that communicates via a base station and performs transceiver communication between terminals without passing through a harmful base station. In a multi-party call method for performing a multi-party call, a step in which a predetermined terminal holds a call or a transceiver call through a harmful base station during a call or a transceiver call with a partner terminal through a base station; Calling another terminal by transceiver communication or communication via a base station; instructing the called terminal, the partner terminal, and a predetermined terminal to perform a multi-party call; Transitioning to a multi-party call using the established communication and transceiver communication.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention
An embodiment applied to the HS will be described with reference to the drawings. A. Configuration of Example A-1. FIG. 1 is a block diagram showing a configuration of a communication system to which a PHS terminal according to an embodiment of the present invention is applied. In the figure, reference numeral 1 denotes an ordinary analog telephone network or a dedicated digital network (hereinafter, referred to as a communication network) laid all over the country. Next, the public base stations 2a and 2b are installed at predetermined intervals in the communication network 1 and each have a service area (radio wave reachable range: communication range) with a radius of several hundred meters centered on itself. It is a relay station that connects PHS terminals (for example, PHS terminals PS1 and PS2) existing in the area to the communication network 1 wirelessly. Next, the communication device 3 is a normal telephone that is always connected to the communication line network 1, and in this embodiment, is one of the external communication devices in a three-party call described later.

Each of the PHS terminals PS1 to PS3 is carried by a user and driven by a battery. The PHS terminals PS1 to PS3 have the same functions as a normal telephone, such as a liquid crystal display unit and dial keys, and wirelessly communicate with the public base station 2a. , 2b are connected to the communication network 1. Also, the PHS terminal PS1 and the PHS terminal PS3 are registered in advance in the same base unit (own base station), and can perform a transceiver call. The PHS terminal PS2 exists in the service area of the public base station 2b, and is connected to the communication network 1 via the public base station 2b. In this embodiment, it is one of the external communication devices in a three-party call described later.

Further, as a function according to the present invention, the PHS terminal PS1 is connected to the PHS terminal PS2 (or the communication device 3) during a public telephone call via the public line network 1.
3 can participate in public calls by transceiver calls,
During the transceiver call with the PHS terminal PS3, the PHS terminal PS2 (or the communication device 3) participates in the transceiver call via the public line network 1, so that the PHS terminal PS1, the PHS terminal PS2 (or the communication device 3), and A three-party call can be made with the PHS terminal PS3. Specifically, time division processing and channel assignment for simultaneously performing public communication and transceiver communication are performed.

A-2. FIG. 2 is a block diagram illustrating a configuration of a PHS terminal according to an embodiment of the present invention. In the figure, reference numeral 10 denotes a transmission / reception unit, which comprises a frequency conversion unit and a modem. The receiving unit of the frequency conversion unit mixes the signal received by the antenna ANT1 with a local oscillation signal of a predetermined frequency output from the PLL synthesizer to convert the signal into an IF (intermediate frequency) signal in the vicinity of the 1.9 GHz band to the 1 MHz band. Perform frequency conversion. Further, the transmitting unit of the frequency conversion unit mixes a π / 4-shift QPSK modulated wave supplied from a modem described later with a local oscillation signal of a predetermined frequency output from the PLL synthesizer so that the frequency becomes 1.9 GHz. Converted,
Radiates from the antenna ANT1 via the antenna switch. Next, the receiving unit of the above-described modem demodulates the IF signal from the frequency converting unit, separates the IF signal into IQ data, forms a data sequence, and sends the data sequence to the communication control unit 11. Further, in the transmission section of the modem, the IQ supplied from the data supplied from the communication
The data is created, modulated by π / 4 shift QPSK, and transmitted to the frequency conversion unit of the transmission / reception unit 10. Note that the frequency converter has a plurality of frequency converters in order to correspond to slots of different channels (for example, public communication channels and private communication channels). However, when a plurality of slots are not adjacent to each other, one frequency conversion unit can cope with this.

Next, the communication control unit 11 performs frame synchronization and slot data format processing. The receiving side of the communication control unit 11 extracts data for one slot from the received data supplied from the modem of the transmitting and receiving unit 10 at a predetermined timing, extracts a unique word (synchronization signal) from this data, and performs frame synchronization. After generating a signal and descrambling the control data section and the audio data section, the control data is sent to the control section 16 and the audio data is sent to the audio processing section 12. The transmitting side of the communication control unit 11 adds control data and the like to the audio data supplied from the audio processing unit 12, adds scramble and the like, and then adds a unique word and the like.
The transmission data for the slot is created, inserted into a predetermined slot in the frame at a predetermined timing, and transmitted to the modem of the transmission / reception unit 10.

Further, the transmitting / receiving section 10 and the communication control section 11 described above are registered in the same base unit (own base station).
It also transmits and receives voice data in a transceiver call that enables a direct call (without passing through a communication line network) with another PHS terminal (child device). Further, in a public telephone call, a transceiver telephone call, and a three-party telephone call by the own terminal, which will be described later, the transmission / reception of the voice data by the public telephone call and the transmission / reception of the voice data by the transceiver telephone call are processed in a time-division manner, so that the apparent (use) time can be improved. It can be processed.

Next, the audio processing unit 12 is composed of a speech codec and a PCM codec. The speech codec performs compression / expansion processing of digital data. The receiving side of the audio processing unit 12
The ADPCM audio signal (4
Bits × 8 KHz = 32 Kbps) are decompressed by decoding into PCM audio signals (8 bits × 8 KHz = 64 Kbps) and output to a PCM codec. The transmitting side of the audio processing unit 12 compresses the PCM audio signal supplied from the PCM codec by encoding the PCM audio signal into an ADPCM audio signal, and sends the signal to the communication control unit 11. The above-described PCM codec performs an analog / digital conversion process. The receiving side converts the PCM audio signal supplied from the speech codec into an analog audio signal by D / A conversion, causes the speaker 13 to generate a sound, and transmits the signal. The side converts the analog audio signal input from the microphone 14 to A /
The signal is converted into a PCM signal by D conversion and transmitted to the speech codec.

In a three-party call, which will be described later, the voice processing unit 12 synthesizes voice data from a public connection destination and voice data input by a microphone 14 of the terminal itself, and outputs voice data from a transceiver connection destination. Data and own terminal microphone 14
, And synthesizes the voice data from the public connection destination, the voice data from the transceiver connection destination, and the voice data input by the own terminal.

Next, the key input section 15 is composed of numerical keys for inputting the telephone number of the other party, a switch for on-hook / off-hook, a volume switch for changing the audio output, and the like. In particular, in the present embodiment, a function assigned to a predetermined key (hereinafter referred to as a hold / hold release key) allows a two-party call to be performed prior to a transition to a three-party call.
In order to accept a call from a third party, it is possible to hold a public call during a call or a transceiver call during a call, and then release the hold for a transition to a three-party call. . The state of these keys and switches is supplied to the control unit 16.

Next, the control unit 16 controls the entire apparatus according to a predetermined program. In particular, in the present embodiment, the control unit 16 performs a hold process for holding a public call or a transceiver call in response to the operation of the hold / hold release key,
A three-party call process for releasing the hold and making a three-party call is executed. Specifically, prior to shifting to a three-party call, a smooth three-party call is realized by allocating a call channel to the interrupted call and performing reception, mixing, and transmission of the other party's voice in a time-division manner. .

The ROM 17 stores programs executed by the control unit 16 and various parameters. The RAM 18 stores data generated under the control of the control unit 16 and is used as a working area. Next, the display unit 19 is composed of a liquid crystal display for displaying various data such as an operation mode, a telephone number, a call time, and the like, and an LED for indicating ON / OFF of a switch and the like. Various data are displayed under control.

B. Next, operations of the PHS terminal PS1 according to the above-described embodiment, mainly the public base station 2a and the PHS terminal PS3, will be described. In the following description, the operation of each unit associated with a call is the same as the operation related to a normal call, and a description thereof will be omitted.

B-1 Basic Operation During Three-Party Talk FIG. 3 is a flowchart for explaining the basic operation during a three-party call by the PHS terminal PS1. In addition,
Details of the operation for shifting to the three-party call will be described later. PH
When the S terminal PS1 shifts to a three-party call, voice reception, mixing, and voice transmission with other communication devices (in this case, the public base station 2a and the PHS terminal PS3) are performed in time-division slots. To process. First, in step S10, audio data is received from the PHS terminal 3 by transceiver communication (slot SL1). Next, in step S12, voice data from the public base station 2a is received by public communication (slot SL2). The voice data is from the PHS terminal PS2 transmitted via the communication network 1.

Then, in step S14, the audio data input from the microphone 14 and the audio data received in the public communication are mixed to obtain audio data M1. Next, in step S16, the audio data input from the microphone 14 and the audio data received by the transceiver communication are mixed to obtain audio data M2. Further, step S18
Then, the audio data input from the microphone 14, the audio data received by the transceiver communication, and the audio data received by the public communication are mixed to obtain audio data M3.
These steps S14 to S18 constitute the slot SL3. The audio data M3, that is, the audio data of the PHS terminal PS1, the audio data of the PHS terminal PS3, and the PH
The audio data M3 composed of the audio data of the S terminal PS2 is
Output from the speaker 14.

Next, in step S20, the mixed voice data M1, that is, the mixed voice data of the voice data of the PHS terminal PS1 and the voice data of the PHS terminal PS2 received by the public communication is transmitted to the PHS terminal by the transceiver communication.
The data is transmitted to the terminal PS3 (slot SL4). Subsequently, in step S22, the mixed audio data M2, that is, the audio data of the PHS terminal PS1 and the audio data of the PHS terminal PS3 received by the transceiver communication are transmitted to the PHS terminal PS2 via the public base station 2a by public communication. (Slot SL5).

B-2. Three-Party Talk by Transceiver Call Interruption during Public Call (Part 1) Next, FIG. 4 is a conceptual diagram for explaining a three-party call operation (No. 1) by transceiver call interruption during public call, and FIG. Is a sequence diagram thereof. The PHS terminal PS1 and the PHS terminal PS2 are shown in FIGS.
It is assumed that a public call is made via the communication network 1 as shown in step S30. In the PHS terminal PS1,
During the public call, it is determined in step S32 whether or not there is a transceiver call. If there is no transceiver call, the public call in step S30 is continued. here,
When the PHS terminal PS3 registered in the same base unit (own base station) as the PHS terminal PS1 performs a transceiver calling operation in step S34 (FIG. 4B), the PHS terminal PS
In step 1, a message indicating that the transceiver communication has been received is displayed.

When confirming the incoming call from the PHS terminal PS3, the user of the PHS terminal PS1 holds the public call by using the hold / hold release key of the key input unit 15 in step S36. When the public call is put on hold, the PHS terminal PS1
Then, in step S38, a channel for a transceiver call is allocated. During the hold, some hold melody may be transmitted to the PHS terminal PS2. Next, in step S40, the user of the PHS terminal PS1 performs a transceiver reception operation to perform a transceiver call with the PHS terminal PS3. When the transceiver receiving operation is performed, the PHS terminal PS1 transmits a PS call response to the PHS terminal PS3. Then, the PS call OK transmitted from the PHS terminal PS3 in response to the response
Is received, in step S42, both parties shift to transceiver communication (FIG. 4 (c)). At this time, the user of the PHS terminal PS3 has the PHS terminal PS1 and the PHS terminal P
It is possible to notify that the user wants to participate in a public call performed with S2.

When the user of the PHS terminal PS1 confirms that the user of the PHS terminal PS3 wants to participate in a call,
In step S44, the hold of the public call is released by the hold / release key of the key input unit 15. When the hold of the public call is released, the PHS terminal PS1 proceeds to step S4.
6, the PHS terminal PS1, the PHS terminal PS2 and the PHS terminal PS2 according to the flowchart shown in FIG.
A three-party call is performed between the S terminal PS3 by a public call and a transceiver call (FIG. 4D).

B-3. FIG. 6 is a conceptual diagram for explaining a three-party call operation (part 2) due to a transceiver call interruption during a public call, and FIG. Is a sequence diagram thereof. The PHS terminal PS1 and the PHS terminal PS2 are shown in FIGS.
It is assumed that a public call is made via the communication network 1 as shown in step S50. Also, PHS terminal PS3
Then, in step S52, it is determined whether the transceiver is waiting for a call, that is, whether there is an incoming call (call) by the transceiver communication from the PHS terminal PS1.

On the other hand, the user of the PHS terminal PS1 during a public call puts the public call on hold using the hold / hold release key of the key input unit 15 in step S54 so that the PHS terminal PS3 participates in the call. When the public call is put on hold, the PHS terminal PS1 allocates a channel for the transceiver call in step S56. During the hold, some hold melody may be transmitted to the PHS terminal PS2 that was in a public call.
Next, the user of the PHS terminal PS1
In step S58, a transceiver call operation is performed (FIG. 6B). When a transceiver calling operation is performed, a PS call is performed by transceiver communication.

On the other hand, when the user of the PHS terminal PS3 performs a transceiver termination operation for the PS call from the PHS terminal PS1 in step S60, the PHS terminal PS3 transmits a PS call to the PHS terminal PS1. After that, a PS call OK for the call is transmitted. And P
PS transmitted from HS terminal PS1 from PHS terminal PS3
Upon receiving the outgoing call OK, at step S62, both sides shift to a transceiver call (FIG. 6 (c)). at this point,
The user of the PHS terminal PS1 can invite the user of the PHS terminal PS3 to participate in a public call.

When the user of the PHS terminal PS1 confirms that the user of the PHS terminal PS3 wants to participate in a call,
In step S64, the hold of the public call is released by the hold / release key of the key input unit 15. When the hold of the public call is released, the PHS terminal PS1 proceeds to step S6.
6, the PHS terminal PS1, the PHS terminal PS2 and the PHS terminal PS2 according to the flowchart shown in FIG.
A three-party call is performed between the S terminal PS3 by a public call and a transceiver call (FIG. 6D).

B-4. Next, FIG. 8 is a conceptual diagram illustrating a three-party call operation (part 1) due to a public call interruption during a transceiver call, and FIG. Is a sequence diagram thereof. The PHS terminal PS1 and the PHS terminal PS2 are shown in FIGS.
It is assumed that the transceiver talks as shown in step S70. PHS terminal PS during transceiver call
The user 1 puts the transceiver call on hold using the hold / hold release key of the key input unit 15 in step S72 so that the PHS terminal PS2 participates in the call. When the transceiver call is put on hold, the PHS terminal PS1 allocates a channel for a public call in step S74. During the hold, some hold melody may be transmitted to the PHS terminal PS3 during the transceiver call. Next, the user of the PHS terminal PS1 calls the PHS terminal PS2 in step S
At 76, a public calling operation is performed (FIG. 8 (b)). When the public call operation is performed, the PHS terminal PS1 makes a public call to the public base station 2a.

On the other hand, when the user of the PHS terminal PS2 performs a public call receiving operation for a public call from the PHS terminal PS1 in step S78, the PHS terminal PS3 sends a call OK to the PHS terminal PS1. After the transmission, the progress display is transmitted. Then, when the PHS terminal PS1 receives the progress indication transmitted from the PHS terminal PS3, in step S80, both parties shift to a public call (FIG. 8C).
At this point, the user of the PHS terminal PS1 can invite the user of the PHS terminal PS2 to participate in the transceiver call.

When the user of the PHS terminal PS1 confirms that the user of the PHS terminal PS2 wants to participate in a call,
In step S82, the hold of the transceiver call is released by the hold / hold release key of the key input unit 15. When the hold of the transceiver call is released, in step S84, the PHS terminal PS1 and the PHS terminal P1 follow the flowchart shown in FIG.
A three-party call is performed between S2 and the PHS terminal PS3 by a public call and a transceiver call (FIG. 8).
(D)).

B-5. FIG. 10 is a conceptual diagram for explaining a three-party call operation (part 2) due to a transceiver call interruption during a public call, and FIG. Is a sequence diagram thereof. PHS
It is assumed that the terminal PS1 and the PHS terminal PS2 are in a transceiver call as shown in step S90 of FIG. 10A and FIG. During the transceiver call, the PHS terminal PS1 determines in step S92 whether or not there is a public incoming call.
The transceiver call in step S90 is continued. Here, when the PHS terminal PS2 performs a public calling operation on the PHS terminal PS1 (FIG. 10B), the PHS terminal PS1
Then, a message indicating that a public call has been received is displayed.

When the user of the PHS terminal PS1 confirms the incoming call from the PHS terminal PS2, step S94
The transceiver call is held by the hold / hold release key of the key input unit 15. When the transceiver call is put on hold, the PHS terminal PS1 allocates a channel for a public call in step S96. During the hold, some hold melody may be transmitted to the PHS terminal PS3. Next, in step S98, the user of the PHS terminal PS1 performs a public call receiving operation to perform a public call with the PHS terminal PS2. When the public call receiving operation is performed, the PHS terminal PS1 sets the public call response to P
Transmit to the HS terminal PS2. And PHSH terminal PS
1 receives a public incoming call OK in response to the above response, in step S100, both parties shift to public calling (FIG. 10).
(C)). At this point, the user of the PHS terminal PS2
It is possible to notify that the user wants to participate in the transceiver call performed between PHS terminal PS1 and PHS terminal PS3.

When the user of the PHS terminal PS1 confirms that the user of the PHS terminal PS2 wants to participate in a call,
In step S102, the hold of the transceiver call is released by the hold / hold release key of the key input unit 15. When the hold of the transceiver call is released, the PHS terminal PS1
Then, in step S104, according to the flowchart shown in FIG. 3 described above, a three-party call is performed between the PHS terminal PS1, the PHS terminal PS2, and the PHS terminal PS3 by a public call and a transceiver call (FIG. 10 (d)). )).

In each of the above embodiments, a three-party call using a public call and a transceiver call has been described. However, the present invention is also applicable to an extension call and a three-party call using a transceiver call via a private base station (also called a base unit). it can.

[0042]

According to the first aspect of the present invention, the audio data of the connection destination via the base station is time-divisionally controlled by the control means.
The voice data of the transceiver connection destination and the voice data input by the terminal are synthesized by the synthesis means, and the synthesized voice data is transmitted to the connection destination via the base station and the transceiver connection destination by the transmission means, and output. Since the voice is output from the means, it is possible to obtain an advantage that a multi-party call in which a call via the base station and a transceiver call are mixed can be performed.

According to the second aspect of the present invention, the voice data from the connection destination via the base station and the voice data input at the own terminal are synthesized by the first synthesis means, and the voice data from the transceiver connection destination is synthesized. The voice data and the voice data input by the own terminal are synthesized by the second synthesis means, and the voice data from the connection destination via the base station, the voice data from the transceiver connection destination, and the voice data input by the own terminal are further input. After the synthesized voice data is synthesized by the third synthesizing unit, the first transmitting unit transmits the audio data synthesized by the first synthesizing unit to the transceiver connection destination, and the second transmitting unit Since the voice data synthesized by the second synthesizing means is transmitted to the connection destination via the base station, the multi-party communication in which the communication via the base station and the transceiver communication are mixed is performed. An advantage that it is Ukoto is obtained.

According to the third aspect of the present invention, the voice data synthesized by the third synthesizing means is output as voice by the output means. This makes it possible to carry out multi-party calls in which both are mixed.

According to the fourth aspect of the present invention, when a call with the currently connected connection destination of the connection destination via the base station or the transceiver connection destination is put on hold by the holding means, the connection means makes the connection. When a connection is established with a connection destination other than the one currently in a call, and then the call is released by the release means, the simultaneous call control means causes a connection between the connection destination already in the call and the connection destination connected by the connection means. Since the simultaneous communication is performed, there is an advantage that a multi-party communication in which the communication via the base station and the transceiver communication are mixed can be performed.

According to the fifth aspect of the present invention, since the connection means connects to the connection destination that has received the call during the current call, the call via the base station and the transceiver can be connected even during the call. An advantage is obtained in that multi-party calls in which calls and telephone calls are mixed can be performed.

According to the sixth aspect of the present invention, the connection means connects to the connection destination called from the own terminal, so that the communication via the base station and the transceiver can be performed even during the call. An advantage is obtained in that multi-party calls in which calls and telephone calls are mixed can be performed.

According to the seventh aspect of the present invention, the call control means enables a call with the connection destination connected by the connection means during the call holding by the holding means. Before switching to a telephone call, the intention of the other party can be confirmed, and an advantage is obtained in that a multi-party call in which a call through the base station and a transceiver call can be mixed more smoothly.

According to the invention described in claim 8, when the predetermined terminal holds a call or a transceiver call via the harmful base station during a call or a transceiver call with the partner terminal via the base station, During the call, another terminal is called by transceiver communication or communication via a base station, and a multi-party call is instructed with the called other terminal, the partner terminal, and a predetermined terminal, and communication via the base station is performed based on the instruction. In addition, since the communication is switched to the multi-party call using the transceiver communication, there is an advantage that the multi-party communication in which the communication via the base station and the transceiver communication are mixed can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a communication system to which a PHS terminal according to an embodiment of the present invention is applied.

FIG. 2 is a block diagram illustrating a configuration of a PHS terminal according to an embodiment of the present invention.

FIG. 3 is a flowchart for explaining a basic operation at the time of a three-party call by the PHS terminal PS1.

FIG. 4 is a conceptual diagram for describing a three-party call operation (part 1) due to a transceiver call interrupt during a public call.

FIG. 5 is a sequence diagram of a three-party call operation (part 1) due to a transceiver call interrupt during a public call.

FIG. 6 is a conceptual diagram for describing a three-party call operation (part 2) due to a transceiver call interrupt during a public call.

FIG. 7 is a sequence diagram of a three-party call operation (part 2) due to a transceiver call interrupt during a public call.

FIG. 8 is a conceptual diagram illustrating a three-party call operation (part 1) due to a public call interrupt during a transceiver call.

FIG. 9 is a sequence diagram of a three-party call operation (part 1) due to a public call interrupt during a transceiver call.

FIG. 10 is a conceptual diagram illustrating a three-party call operation (part 2) due to a transceiver call interrupt during a public call.

FIG. 11 is a sequence diagram of a three-party call operation (part 2) by a transceiver call interruption during a public call.

[Explanation of symbols]

ANT antenna 10 transmitting / receiving unit (transmitting unit, first transmitting unit, second transmitting unit) 11 communication controlling unit (transmitting unit, first transmitting unit, second transmitting unit) 12 voice processing unit (synthesizing unit, second transmitting unit) 1 combining means, 2nd combining means, 3rd combining means) 13 speaker 14 microphone 15 key input section (holding means, canceling means) 16 control section (holding means, connecting means, canceling means, simultaneous call control means, Call control means) 17 ROM 18 RAM 19 Display

Claims (8)

[Claims] 1. A communication device for communicating via a base station and performing transceiver communication between terminals without passing through a harmful base station, comprising: a base station voice data receiving voice data from a connection destination via the base station. Receiving means, transceiver voice data receiving means for receiving voice data from a transceiver connection destination, voice input means for inputting voice data at its own terminal, voice data received by the base station voice data receiving means, Synthesizing means for synthesizing the voice data received by the transceiver voice data receiving means and the voice data input from the voice input means, and connecting the voice data synthesized by the synthesizing means to a connection destination via a public base station and Transmitting means for transmitting to a transceiver connection destination; and output means for outputting voice data synthesized by the synthesizing means as voice. And control means for operating the base station voice data receiving means, the transceiver voice data receiving means, the voice input means, the synthesizing means, the transmitting means, and the output means in a time division manner. Communication equipment. 2. The first synthesizing means for synthesizing voice data from a connection destination via a base station and voice data inputted by the terminal, and synthesizing voice data from a transceiver connection destination with the self-terminal. Second synthesizing means for synthesizing voice data input at the terminal, voice data from a connection destination via the base station, voice data from the transceiver connection destination, and voice data input at the own terminal. A third synthesizing unit for synthesizing the audio data, the first transmitting unit transmitting the voice data synthesized by the first synthesizing unit to a transceiver connection destination, and the second synthesizing unit. 2. The communication device according to claim 1, further comprising second transmission means for transmitting the voice data to a connection destination via a base station. 3. The communication device according to claim 2, wherein said output means outputs the voice data synthesized by said third synthesis means as voice. 4. A holding means for holding a call with a connection destination currently in communication, either of a connection destination via a base station or a transceiver connection destination; Connecting means for connecting to a connection destination, release means for releasing the call held by the holding means, and when the call is released by the release means, the connection destination which is already in a call is connected to the connection means by the connection means. A simultaneous call control means for making a simultaneous call with a connected party. 5. The communication device according to claim 4, wherein the connection unit connects to a connection destination that has received a call during a current call. 6. The communication device according to claim 4, wherein the connection unit connects to a connection destination called from the own terminal. 7. The communication device according to claim 4, further comprising a call control unit that enables a call with a connection destination connected by said connection unit while the call holding by said holding unit is on hold. Communication equipment. 8. A multi-party communication method for performing multi-party communication using a communication device that communicates via a base station and performs transceiver communication between terminals without passing through a harmful base station. Holding a call or transceiver call via the harmful base station during a call via the station or a transceiver call; and calling another terminal by transceiver communication or communication via the base station during the hold. Instructing a multi-party call with another terminal that has called, a partner terminal, and a predetermined terminal; and switching to a multi-party call using communication via a base station and transceiver communication based on the instruction. A multi-party call method characterized by the following.