WO2007015329A1

WO2007015329A1 - Portable telephone with noisy-environment conversation controller

Info

Publication number: WO2007015329A1
Application number: PCT/JP2006/310063
Authority: WO
Inventors: Shinji Nakamoto; Takefumi Matsui; Masataka Yamazaki
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2005-08-02
Filing date: 2006-05-19
Publication date: 2007-02-08
Also published as: JPWO2007015329A1

Abstract

A device for preventing speech data on the speaker from being packeted into an IP packet and sent to the external network when the speech is buried in the ambient noise. The device comprises a speech data creating section (102) for converting a speech into digital data, an ambient noise estimating section (106) for estimating the ambient noise level from the speech data acquired by the speech data creating section (102), an ambient noise threshold storage holding section (108) for holding a threshold level to serve as a judgment criterion, an ambient noise judging section (107) for comparing the ambient noise level estimated by the ambient noise estimating section (106) with the threshold level, and an IP packet creating section (104) for selectively packeting the speech data into an IP packet if the level of the ambient noise level is judged to be lower than the threshold level by the ambient noise judging section (107). Therefore, if the ambient noise is loud, the speech data on the speaker is not packeted into an IP packet nor transmitted to the external network.

Description

Specification

Mobile phone equipped with noise control device

Technical field

TECHNICAL FIELD [0001] The present invention relates to a mobile phone, and more specifically, an IP phone function for making a call by sending and receiving voice digital data via an IP packet and a network, and a PoC call function using, for example, half-duplex communication And the like.

Background art

[0002] The voice digital data of the speaker is IP packetized by the general Internet connection.

Calling devices such as IP phones, which establish a call by sending and receiving voice digital data of a speaker via the Internet, have become popular. In addition, with the advancement of wireless communication technology, a technology for realizing an IP phone has been proposed for a mobile phone (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 2003-250003

Disclosure of the invention

Problems to be solved by the invention

[0003] However, conventional IP phones are based on the premise that they always have a wired broadband Internet connection (fixed rate system), and mobile phones cannot be heard by the pay-per-use charging of general IP packets. The voice of a speaker under moderate noise is also sent and received as IP packets, and the user has to pay for IP packets that are meaningless as calls.

[0004] The present invention has been made to solve the above-described problem. When the speaker's voice is erased by ambient noise, the speaker's voice is not transmitted as an IP packet. Therefore, an object of the present invention is to provide a mobile phone equipped with a noisy call control device that can reduce network traffic by not transmitting IP packets that are meaningless as calls to the network.

Means for solving the problem

[0005] The present invention provides audio data generation means for converting audio input to a microphone into digital data. Ambient noise estimation means for estimating the ambient noise level from voice data obtained by the voice data generation means, an ambient noise threshold storage holding means for holding a threshold level as a reference for determining that the ambient noise is large, and ambient noise estimation Ambient noise judgment means for comparing the ambient noise level obtained by the means and the ambient noise threshold storage level held in the ambient noise threshold storage holding means, and the ambient noise level stored in the ambient noise threshold storage means by the ambient noise judgment means If it is determined that the noise level is lower than the threshold level of ambient noise held by the means, the IP packet generation means for selectively packetizing the voice data and the IP packet generated by the ip packet generation means Network interface means for transmitting to the external network.

[0006] With this configuration, it is possible to prevent the voice data of the speaker from being transmitted as an IP packet when the voice of the speaker is erased by ambient noise. As a result, network traffic can be reduced by not sending meaningless IP packets to the network.

[0007] In addition, the present invention further comprises a notification message storage holding means that holds in advance as voice digital data that voice cannot be transmitted due to a large ambient noise, and the IP packet generation means When the noise judgment means determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold value storage and holding means, the voice digital data held in the notification message storage and holding means It has a configuration that converts IP into IP packets.

[0008] With this configuration, when the speaker's voice is muted by ambient noise, the call partner is informed that the speaker's voice has been muted by ambient noise. In addition, the amount of IP packets can be reduced compared to the case where the voice that has been extinguished by ambient noise is sent to the other party as it is.

[0009] Further, the present invention provides voice to the speaker when the ambient noise determination unit determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage unit. It further has display means for indicating that the data could not be transmitted to the external network.

[0010] With this configuration, the speaker can know that the spoken content is not sent to the other party. [0011] Further, the present invention further includes timer value storage holding means for holding a predetermined time interval.

When the sound data generating means determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage holding means by the ambient noise determining means, the ambient noise determining means After a time preset in the timer value storage / holding means has elapsed from the time determined by the above, the voice input to the microphone is converted into digital data.

[0012] With this configuration, it is possible to reduce power consumption compared to power consumed in a normal call.

[0013] In addition, the present invention provides a case in which the display means determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage holding means by the ambient noise determination means. The voice input to the microphone is not converted into digital data until a preset time elapses from the time point determined by the ambient noise determination means.

[0014] With this configuration, the speaker can know in advance that a call cannot be established because of high ambient noise.

[0015] The mobile phone of the present invention includes a speaking right control unit that acquires a right to speak from a server that manages the right to speak via an external network, and the right to speak by the speaking right control unit. Sound data generation means for converting the sound input to the microphone into digital data, ambient noise estimation means for estimating the ambient noise level from the sound data obtained by the sound data generation means, and determination that the ambient noise is large! Ambient noise threshold storage holding means for holding a reference threshold level, and the ambient noise level obtained by the ambient noise estimation means and the ambient noise threshold storage holding means! The ambient noise determining means for comparing the threshold levels of the ambient noise, and the ambient noise determining means holding the ambient noise level in the ambient noise threshold storage and holding means. When it is determined that the audio data is lower than the threshold level of sound, the IP packet generation means for selectively converting the voice data into an IP bucket, and the IP packet generated by the IP packet generation means via the external network. Network interface to send to the server And a noisy call control device.

[0016] According to this configuration, if the mobile phone that has acquired the right to speak cannot be heard by the user V using another mobile phone and there is a possibility of transmitting voice, the mobile phone It is possible to prevent the terminal from transmitting the voice.

[0017] In addition, in the mobile phone of the present invention, when the ambient noise determination unit determines that the level of the ambient noise is greater than the threshold level of the ambient noise, the floor control unit acquires the floor Open to the server.

[0018] According to this configuration, when the mobile phone that has acquired the right to speak has determined that the level of ambient noise is greater than the threshold level after starting transmission of audio digital data, audio that cannot be heard is transmitted. By releasing the right to speak, the user using the mobile phone can be immediately notified of the possibility.

[0019] In addition, the mobile phone of the present invention includes a server power that manages a right to speak via an external network, a right control unit that acquires the right to speak, and a microphone before the right to speak is acquired by the right control unit. Voice data generation means for converting the voice input to the digital data, ambient noise estimation means for estimating the ambient noise level from the voice data obtained by the voice data generation means, and a criterion for determining that the ambient noise is large! Ambient noise threshold storage and holding means for holding the threshold noise level, and the ambient noise level obtained by the ambient noise estimation means and the ambient noise threshold storage and holding means! The ambient noise determination means and the ambient noise determination means holding the ambient noise level in the ambient noise threshold storage holding means. If it is determined that the level is smaller than the threshold level, the voice right is selectively acquired by the voice right control unit, and the voice data obtained by the voice data generation means during the period is IP packet generated. Means and network interface means for transmitting the IP packet generated by the IP packet generation means to the server via the external network.

[0020] According to this configuration, when a mobile phone trying to acquire the right to speak cannot be heard by a user using another mobile phone and there is a possibility of transmitting voice, the mobile phone It is possible to prevent the telephone terminal from transmitting the voice. [0021] Further, in the mobile phone of the present invention, the floor control unit accepts a notification that another telephone terminal has released the floor from the server, and the voice data generation means is controlled by the floor control unit. Before acquiring the floor, the voice input to the microphone is converted into digital data during a period including at least the time when the floor control unit receives a notification from the server that another telephone terminal has released the floor. It is characterized by becoming.

[0022] According to this configuration, the ambient noise level is determined only at the time or period when the mobile phone is likely to acquire the right to speak, compared to a configuration in which the microphone is always operated. Therefore, it is possible to reduce the power consumption of the mobile phone required for measuring ambient noise.

[0023] Further, in the mobile phone according to the present invention, the voice data generation unit acquires the right to speak from the server before the voice right generation unit obtains the right to speak by the right control unit. The voice input to the microphone is converted into digital data in a period including at least the time point when the process is executed.

[0024] According to this configuration, the determination of the ambient noise level is performed only at the time or period when the mobile phone is likely to acquire the right to speak, compared to a configuration in which the microphone is always operated. Therefore, it is possible to reduce the power consumption of the mobile phone required for measuring ambient noise.

[0025] Further, in the mobile phone of the present invention, the floor control unit accepts a notification that the floor is not granted from the server, and the voice data generation means receives the floor by the floor control unit. The voice input to the microphone is converted into digital data during a period at least including the time when the floor control unit receives a notification that the floor is not granted from the server before acquisition. To do.

[0026] According to this configuration, the ambient noise level is determined only at the time or period when the mobile phone is likely to acquire the right to speak, compared to the configuration in which the microphone is always operated. Therefore, it is possible to reduce the power consumption of the mobile phone required for measuring ambient noise.

The invention's effect

[0027] As described above, the present invention provides audio data that converts audio input to a microphone into digital data. Data generation means, ambient noise estimation means for estimating the ambient noise level from the voice data obtained by the voice data generation means, and ambient noise threshold storage holding for holding a reference threshold level for determining that the ambient noise is high Ambient noise judgment means for comparing the ambient noise level obtained by the ambient noise estimation means and the ambient noise threshold memory holding means! If it is determined that the level is lower than the threshold level of the ambient noise held in the ambient noise threshold storage and holding means, the IP packet generation means and the IP packet generation means selectively select the voice data as an ip packet. Network interface means for transmitting the generated IP packet to an external network. By separate component Nettowa over click it does not transmit an IP packet, and reduce traffic on the external network, in which can be prevented from being charged by the traffic without IP packet meaningful speaker. In addition, in the above case, it is possible to have a means for notifying the speaker and the other party that the ambient noise is large.

Brief Description of Drawings

FIG. 1 is a detailed block diagram of a noise reduction control device in a mobile phone including the noise communication control device of Embodiment 1 of the present invention.

[Fig. 2] Sequence diagram in the first embodiment

FIG. 3 is a detailed block diagram of a noise reduction control device in a mobile phone including the noise communication control device according to the second embodiment of the present invention.

[Fig. 4] Sequence diagram in the second embodiment

FIG. 5 is a detailed block diagram of a noise reduction control apparatus in a mobile phone provided with the noise reduction call control apparatus according to the third embodiment of the present invention.

[Fig. 6] Sequence diagram in the third embodiment

FIG. 7 is a detailed block diagram of a noise reduction control device in a mobile phone provided with the noise reduction call control device of Embodiment 4 of the present invention.

FIG. 8 is a sequence diagram according to the fourth embodiment.

FIG. 9 is a sequence diagram of a noise reduction control device in a mobile phone including the noise communication control device according to the fifth embodiment of the present invention. 圆 10] Configuration diagram of a mobile phone provided with the noisy call control device of Embodiment 6 of the present invention 圆 11] Configuration diagram of the PoC server of Embodiment 6 of the present invention

圆 12] Sequence in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 6 of the present invention and a PoC server

圆 13] Sequence in a PoC system including a mobile phone equipped with a noisy call control device of Embodiment 7 of the present invention and a PoC server

圆 14] Sequence in a PoC system including a mobile phone equipped with a noisy call control device and a PoC server according to Embodiment 7 of the present invention

15] Sequence in a PoC system including a mobile phone equipped with a noisy call control device of Embodiment 8 of the present invention and a PoC server

圆 16] Sequence in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 9 of the present invention and a PoC server

圆 17] Configuration diagram of mobile phone according to the tenth embodiment of the present invention

圆 18] Configuration of a PoC server equipped with a noisy call control device according to Embodiment 10 of the present invention

圆 19] Sequence in a PoC system including a PoC server and mobile phone provided with the noisy call control device of Embodiment 10 of the present invention

Explanation of symbols

101 microphone

102 Audio data generator

103 Audio data processor

104 IP packet generator

105 Network interface section

106 Ambient noise estimation unit

107 Ambient noise detector

108 Ambient noise threshold storage unit

109 Overall control unit

110 Notification message storage 111 Display

112 Timer value memory

113 floor control section

114 PoC button

204 IP packet generator

205 Network IZF Department

206 Ambient noise estimation unit

207 Ambient noise detector

208 Ambient noise threshold storage unit

209 Overall control unit

213 floor control section

215 Audio data processor 215

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Embodiment 1]

FIG. 1 is a configuration diagram showing a mobile phone provided with the noisy call control device according to the first embodiment of the present invention.

In FIG. 1, the voice of the speaker and the ambient noise input from the microphone 101 that converts sound into an electrical signal are generated as voice digital data by the voice data generation unit 102. This audio digital data is encoded by the audio data processing unit 103, and the encoded audio data is converted into an IP packet by the IP packet generation unit 104 and passed through the network interface unit (network IZF unit) 105. Sent to external network. Normally, the speaker's voice is transmitted to the other party in this way.

Here, when the ambient noise of the speaker is large, the following occurs.

The voice digital data generated by the voice data generation unit 102 is converted into the ambient noise level (in this specification, “ambient noise level” or “ambient noise level” This refers to an evaluation scale in which the “sound pressure level” (in decibels = dB), which expresses the magnitude of sound, is corrected for human hearing, and is measured using the A characteristic of the sound level meter. It is also called “A characteristic sound pressure level”. The estimated ambient noise level is compared with the ambient noise threshold level stored in the ambient noise threshold storage unit 108 in advance by the ambient noise determination unit 107, and the ambient noise level is determined to be low. In such a case, the overall control unit 109 controls the audio data processing unit 103 to encode the audio digital data, and the IP packet generation unit 104 controls the IP packet generation. It is. On the other hand, if it is determined that the ambient noise is high, the overall control unit 109 controls the audio data processing unit 103 so that the audio digital data is not encoded.

The IP packet generator 104 is also controlled so that it is not converted into an IP packet.

FIG. 2 shows a sequence diagram of a mobile phone provided with the noisy call control device of the first embodiment.

[0036] The voice data generation unit 102 generates voice digital data for the voice and ambient noise of the speaker input from the microphone 101 (S201). The sound digital data generated by the sound data generation unit 102 is also estimated by the ambient noise estimation unit 106 (S202). The estimated ambient noise level is compared with the ambient noise threshold level stored in advance in the ambient noise threshold storage unit 108 by the ambient noise determination unit 107 (S203). If the estimated ambient noise level is lower as a result of the comparison, the audio data processing unit 103 encodes the audio digital data (S204). The encoded voice data is converted into an IP packet by the IP packet generator 104 (S205). The IP packet is sent to the external network via the network interface unit 105 (S206). Then, the same steps are repeated from step S201.

Here, in step S203, if the estimated ambient noise level is greater as a result of the comparison, the IP packet is not transmitted, and the same step is repeated from step S201. .

[0038] As described above, in the present embodiment, when the ambient noise is high, IP packets are not sent to the external network, so the traffic on the external network is reduced and there is no meaning for the speaker. It is possible to prevent being charged for packet traffic.

[0039] (Embodiment 2)

FIG. 3 is a block diagram showing a mobile phone provided with the noisy call control device according to the second embodiment of the present invention. FIG.

In FIG. 3, a notification message storage unit 110 is added to the configuration of FIG. 1 already described in the first embodiment. The notification message storage unit 110 stores in advance voice digital data for notifying the other party of the call when the ambient noise of the speaker is large.

That is, in the present embodiment, the ambient noise determination unit 107 estimates the ambient noise threshold value in the ambient noise threshold storage unit 108 and the ambient noise estimation unit 106 estimates the ambient noise threshold level. When the ambient noise level is high, the overall control unit 109 holds the voice digital data held in the notification message storage holding unit 110 instead of the voice digital data generated by the voice data generation unit 102. The data is encoded by the voice data processing unit 103, and further controlled by the IP packet generation unit 104 to perform IP packet transmission, and then transmitted to the other party.

[0042] Instead of sending this voice notification message to the call partner, it is also possible to send a dedicated data format negotiated with the device on the call partner side. In this case, the device at the other end of the call receiving the dedicated data format can play a predetermined voice message.

FIG. 4 shows a sequence diagram of a mobile phone provided with the noisy call control device according to the second embodiment.

[0044] FIG. 4 shows the estimated ambient noise level and ambient noise determination unit 107 previously stored in the ambient noise threshold storage holding unit 108 in step S203 with respect to the sequence of the first embodiment shown in FIG. As a result of comparing the threshold levels of ambient noise, step S207, which is executed when the estimated ambient noise level is larger, is added.

That is, in the present embodiment, when it is determined that the ambient noise of the speaker is larger than the threshold level (NO in S203), the speaker's information stored in the notification message storage unit 110 is stored. When it is determined that the ambient noise is high, the notification message voice digital data for notifying the other party of the call is encoded (S207). Thereafter, the encoded data of the notification message is converted into an IP packet (S205).

As described above, in the present embodiment, the speaker's voice is muted by ambient noise. In such a case, the other party can be notified that the voice of the speaker has been extinguished by the ambient noise, and the voice that has been extinguished by the ambient noise can be sent directly to the other party. Compared to, the amount of IP packets can be reduced, reducing unnecessary billing and network traffic.

[0047] (Embodiment 3)

FIG. 5 is a block diagram showing a mobile phone provided with the noisy call control device according to the third embodiment of the present invention.

FIG. 5 further adds a display unit 111 to the configuration of the second embodiment shown in FIG. The display unit 111 indicates to the speaker that the voice data cannot be transmitted to the external network when the ambient noise determination unit 107 determines that the ambient noise level of the speaker is greater than the threshold level. . The display hand 111 may be a display of characters on a display device, or may be a display of light blinking by a LED or the like.

FIG. 6 shows a sequence diagram of a mobile phone provided with the noisy call control device according to the third embodiment.

FIG. 6 includes step S208 after step S207 with respect to the sequence of the second embodiment shown in FIG.

[0051] That is, in the present embodiment, when the ambient noise of the speaker is large, the notification message voice digital data for notifying the other party is encoded (S207), and then the speaker is notified. The display unit 111 indicates that the voice data cannot be transmitted to the external network (S208).

[0052] In the present embodiment, notification message storage unit 110 is provided, and after step S207, step S208 is executed to display to the speaker that the spoken content cannot be sent to the other party. However, the present invention does not have the notification message storage unit 110 that is not limited to this, and the estimated ambient noise level and the threshold level of the ambient noise stored in advance are determined in step S203. If the estimated ambient noise level is higher as a result of the comparison in the section 107, the step S208 is executed without going through the step S207, and the speaker's voice is converted into the ambient noise without going through the step S207. It is also possible to leave without telling that it has been wiped out. [0053] As described above, in this embodiment, when the speaker's voice is muted by ambient noise, the speaker does not send the spoken content to the other party. The amount of IP packets can be reduced compared to the case where the voice that can be known and muffled by ambient noise is sent to the other party as it is, thus reducing unnecessary charges and reducing network traffic. I can plan.

[Embodiment 4]

FIG. 7 is a block diagram showing a mobile phone provided with the noisy call control device according to the fourth embodiment of the present invention.

In FIG. 7, a timer value storage / holding unit 112 is added to the configuration of the third embodiment shown in FIG.

[0056] In the timer value storage / holding unit 112, when the ambient noise determination unit 107 determines that the level of the ambient noise of the speaker is larger than the threshold level, the timer single value storage / holding is performed from the determined time. The voice data input to the microphone 101 is not converted into digital data by the voice data generation unit 102 until the time elapses until it is held by the unit 112, and the timer value storage holding unit 112 is determined from the determined time. After the elapse of the time held in, the voice data generation unit 102 converts the voice input to the microphone 101 into digital data.

FIG. 8 shows a sequence diagram of a mobile phone provided with the noisy call control device according to the fourth embodiment.

FIG. 8 has step S209 after step S208 with respect to the sequence of the third embodiment shown in FIG.

That is, in the present embodiment, the display unit 111 indicates that the speaker cannot transmit the voice data to the external network (S208), and is then held in the timer value storage holding unit 112. Time measurement is started in the overall control unit 109 using the timer value that is present (S209).

Further, in FIG. 8, step S210 is added to FIG. 6 before S201. In step S210, it is determined whether the time measurement in the overall control unit 109 is completed. Therefore, the process of step S201 is not performed until the time measurement is completed.

That is, in the present embodiment, it is determined in step S210 that the time measurement has been completed. If YES (S210: YES), the power to perform the process of step S201 is otherwise (NO in S210). The determination of the end of the time measurement is repeated (S210).

[0062] As described above, in the present embodiment, when the speaker's voice is muted by ambient noise, the speaker does not send the spoken content to the other party. The amount of IP packets can be reduced compared to the case where the voice that can be known and muffled by ambient noise is sent to the other party as it is, thus reducing unnecessary billing and network traffic. In addition, since the voice input to the microphone during the time set in advance in the timer value storage and holding means is not converted into digital data, the power consumption can be reduced compared to the power consumed in a normal call. .

[0063] (Embodiment 5)

The configuration of the mobile phone provided with the noisy call control device according to the fifth embodiment of the present invention is the same as that shown in FIG. 7, except that the timer 111 stored in the timer value storage holding unit 112 is the display unit 111. The overall control unit 109 measures the time based on the value, and displays to the speaker that the voice input to the microphone 101 is not converted into digital data for the other party. This display means may be a display of characters on a display device, or may be a display of blinking light such as an LED.

FIG. 9 shows a sequence diagram of a mobile phone provided with the noisy call control device according to the fifth embodiment.

FIG. 9 shows the sequence of the fourth embodiment shown in FIG. 8, in which the time measurement is completed by the overall control unit 109 using the timer value held in the timer value storage holding unit 112. If not (NO in S210), step S211 is added.

That is, in the present embodiment, if time measurement has not been completed in overall control unit 109 (NO in S210), the microphone is being used while time measurement is being performed in overall control unit 109. 1 When the voice input in 01 is not converted to digital data for the other party, the message is displayed to the speaker (S211), and when the time measurement is completed in the overall control unit 109 (YES in S210), the microphone 1 01 The voice data generated by the voice data generator 102 also generates voice digital data (S201).

[0067] As described above, in the present embodiment, the speaker's voice is muted by ambient noise. In such a case, the voice input to the microphone for a time set in advance in the timer value storage and holding means is not converted into digital data.

[0068] As described above, in this embodiment, when the speaker's voice is muted by the ambient noise, the speaker is noisy because of the ambient noise. The amount of IP packets can be reduced compared to the case where the voice that has been extinguished by the ambient noise is transmitted to the other party as it is. The network traffic can be reduced, and the voice input to the microphone for the time preset in the timer value storage and holding means is not converted into digital data, so it is consumed in comparison with the power consumed in normal calls. Electric power can be reduced.

[0069] (Embodiment 6)

Embodiments 1 to 5 of the present invention have been described by taking, as an example, a mobile phone that can realize an IP phone that establishes a call by IP packetizing voice digital data and transmitting / receiving it via a network. In Embodiment 6 of the present invention, in recent years, PoC (Push-to-Talk), which enables easy group calls, has been developed.

The following is an example of the case where a mobile phone equipped with a noise control device is applied to the over cellular communication system.

[0070] In the PoC call system, a plurality of mobile phone terminals used by a large number of users are connected via SPoC servers, and group calls are performed under the control of the PoC server. The PoC server manages the granting of speaking rights to mobile phone terminals during group calls or the release of speaking rights from mobile phone terminals, and uses one mobile phone terminal that has been given the right to speak by PoC Sano. Only users who are speaking can speak to other mobile phone terminals.

[0071] In a PoC call, half-duplex communication (a mobile phone terminal that has acquired the right to speak transmits voice digital data in IP packets, while a mobile phone terminal that has not acquired the right to speak transmits the voice digital data. If a voice that cannot be heard by a user using another mobile phone terminal is transmitted from a mobile phone terminal that has acquired the right to speak, use another mobile phone terminal. The mobile phone terminal cannot hear until the mobile phone terminal releases the floor, and the mobile phone The user who is using the talk terminal cannot be notified. For this reason, in a PoC call, while one user is speaking, it is difficult to determine whether another user who is the other party can hear the speech, and voice that cannot be heard. The transmission of digital data over the network, especially the transmission of voice digital data to each of a plurality of mobile phone terminals, causes an unnecessary traffic load.

[0072] In Embodiment 6 of the present invention, when there is a possibility that a certain mobile phone terminal may transmit a sound that cannot be heard by a user using the other mobile phone terminal due to noise or the like, Provided is a mobile phone provided with a noisy call control device that can prevent the mobile phone terminal from transmitting the voice.

FIG. 10 shows a configuration diagram of a mobile phone including the noisy call control device according to the sixth embodiment of the present invention.

A mobile phone provided with the noisy call control device according to the sixth embodiment of the present invention has the same configuration as the mobile phone provided with the noisy call control device according to the third embodiment of the present invention. The PoC button 114 is arranged. When the floor control unit 113 detects that a mobile phone user during a PoC call presses the PoC button 114 to acquire the floor when a session is established between a plurality of mobile phones, A request to acquire a right to speak to the overall control unit 109 (for example, Talk

Burst Request) is generated and the message is transmitted to the PoC server via the network I / F unit 105. Then, the overall control unit 109 receives a message from the PoC Sano (for example, Talk).

(Burst Granted) is received, it is displayed on the display 111 with text, images, etc. that the right to speak is obtained, and is notified to the mobile phone user, and the right to speak is input from the microphone 101 during the period of acquisition. The voice data and the ambient noise of the speaker are generated as voice digital data by the voice data generation unit 102. This voice digital data is encoded by the voice data processing unit 103, and the encoded voice digital data is converted into an IP packet. The generation unit 104 converts it into an IP bucket and sends it to the external network via the network interface unit (network IZF unit) 105.

[0074] Thereafter, the overall control unit 109 performs the speech data generation unit 102 during the acquisition of the right to speak. The generated sound digital data is used to estimate the ambient noise level by the ambient noise estimation unit 106, and the estimated ambient noise level is previously stored in the ambient noise threshold storage unit 108 by the ambient noise determination unit 107. If the ambient noise level is determined to be high, the voice data processing unit 103 controls the voice digital data not to be encoded, and the IP packet generation unit 104 However, control is done so that IP packets are not lost.

[0075] Further, the floor control unit 113 controls the entire system when detecting that the mobile phone user who has acquired the floor has released the PoC button 114 to release the floor. Part 109 has a floor release message (e.g. Talk

Burst Release) is created and the message is sent to the PoC server via the network I / F unit 105. Then, the overall control unit 109 controls the audio data processing unit 103 so that the audio digital data is not encoded, and the IP packet generation unit 104 also controls the IP packet generation unit 104 not to perform IP packet response.

FIG. 11 shows a configuration diagram of the PoC server according to the sixth embodiment of the present invention.

The PoC server according to the sixth embodiment of the present invention includes a network IZF 205, an overall control unit 209, and a floor control unit 213. The floor control unit 213 establishes a session between a plurality of mobile phone terminals participating in a PoC call, and a floor acquisition request message or a floor release message received from the plurality of mobile phone terminals after the session is established. Depending on the situation, the granting of the right to speak to the mobile phone terminal or the release of the right to speak from the mobile phone terminal is managed. Of the mobile phone terminals participating in the PoC call from the floor control unit 213, the general control unit 209 that has been notified of the mobile phone terminal to which the floor has been granted has the floor right via the network IZF205. Send voice digital data received from the assigned mobile phone terminal to other mobile phone terminals with the right to speak.

The flow of processing in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 6 of the present invention and a PoC server will be described in detail below. FIG. 12 shows a sequence in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 6 of the present invention and a PoC server. In FIG. 12, user A is using Mobile phone A shows processing when voice digital data is transmitted to another mobile phone, and mobile phone A is a mobile phone equipped with the noisy call control device according to Embodiment 6 of the present invention. Equivalent to.

[0078] When a session is already established between mobile phone A and another mobile phone, and user A presses PoC button 114 and the mobile phone user tries to acquire the floor, Mobile phone A sends a message acquisition request message to the PoC server. The PoC server sends a floor grant message to mobile phone A in response to the floor acquisition request message, while the other mobile phone grants floor right to notify mobile phone A that the floor has been granted. Completed messages (e.g. Talk

Burst Taken). Mobile phone A, which has received the right-to-speak message from PoC Sano, displays on the display 111 that it has acquired the right to speak and informs the mobile phone user that it has begun transmitting digital audio data. Become.

[0079] After starting transmission of the audio digital data, the mobile phone A estimates the level of ambient noise included in the audio digital data, and compares the estimated level of ambient noise with the threshold level of ambient noise. Then, the mobile phone A estimates the ambient noise level and compares it with the threshold level until it releases the pressing of the user A power PoC button 114 or determines that the ambient noise level is greater than the threshold level. In addition, transmission of voice digital data to the PoC server will continue. The PoC server sends the voice digital data received from mobile phone A to another mobile phone.

[0080] When the mobile phone A determines that the ambient noise level is greater than the threshold level after starting the transmission of the audio digital data, the mobile phone A ends the transmission of the audio data by transmitting a floor release message to the PoC server. At the same time, the fact that the right to speak is released is displayed on the display unit 111 to notify the mobile phone user. The PoC server that has received the floor release message from mobile phone A transmits a non-speaking right message (for example, Talk Burst Idle) notifying that the floor has been released to another mobile phone.

[0081] As described above, according to the mobile phone including the noisy call control device according to the sixth embodiment of the present invention, when it is determined that the level of ambient noise is greater than the threshold level after starting transmission of audio digital data, Send a voice release message to the PoC server to send voice data If a mobile phone terminal that has acquired the right to speak is likely to send voice that cannot be heard by users using other mobile phone terminals, the mobile phone terminal sends the voice. Can be prevented in advance. In addition, when the mobile phone terminal that has acquired the right to speak has determined that the ambient noise level is greater than the threshold level after starting the transmission of audio digital data, the mobile phone terminal displays the fact that the right to speak is released on the display unit. By notifying the telephone user, it is possible to immediately inform the user who uses the mobile phone terminal that there is a possibility that an unintelligible voice may be transmitted.

Note that in the mobile phone equipped with the noisy call control device according to the sixth embodiment of the present invention, when it is determined that the level of ambient noise is greater than the threshold level after starting transmission of audio digital data, Force to send voice release message to PoC server to end transmission of voice data Ambient noise level is lower than threshold level for a predetermined period after it is determined that ambient noise level is higher than threshold level If it continues to be determined that it is large, a voice release message may be sent to the PoC server to end the voice data transmission. In this process, the ambient noise determination unit 107 is provided with a timer function, the timer function is activated when it is determined that the ambient noise level is greater than the threshold level, and then the ambient noise level is determined for a predetermined period. Realized by a configuration that resets the timer function when it is determined that the level is lower than the threshold level, and notifies the overall control unit 109 of the determination result when the timer function times a predetermined period it can. With this configuration, transmission of audio digital data can be prevented from being interrupted by instantaneous noise, which is more comfortable with a mobile phone equipped with the noisy call control device of Embodiment 6 of the present invention. PoC calls can be provided to users.

[0083] (Embodiment 7)

In the seventh embodiment of the present invention, the case where a mobile phone equipped with a noise control device is applied to the PoC call system will be described below as an example.

In Embodiment 6 of the present invention, when the mobile phone terminal that has acquired the right to speak determines that the level of ambient noise included in the voice that is spoken during the right to speak is greater than a threshold level, the right to speak message is displayed. Configuration to end transmission of audio data by transmitting to PoC server However, in Embodiment 7 of the present invention, the ambient noise level in the vicinity of the mobile phone terminal before the right to speak is compared with a threshold level, and if the ambient noise level is greater than the threshold level, Do not allow the right to speak on the phone terminal!

The processing flow in the PoC system including the mobile phone equipped with the noisy call control device of Embodiment 7 of the present invention and the PoC server will be described in detail below. FIG. 13 shows a sequence in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 7 of the present invention and a PoC server. Note that the configuration including the mobile phone provided with the noisy call control device and the PoC server according to the seventh embodiment of the present invention is the same as the configuration described in the sixth embodiment, and thus the description thereof is omitted. In addition, FIG. 13 shows processing when mobile phone A used by user A obtains the right to speak, and mobile phone A is provided with the noisy call control device according to the seventh embodiment of the present invention. Equivalent to a mobile phone.

[0085] If a session is already established between mobile phone A and another mobile phone, and user A presses PoC button 114 and the mobile phone user tries to acquire the floor, Before receiving the floor grant message from the PoC server, the overall control unit 109 of the mobile phone A operates the microphone 101 and sends the voice of the speaker and the ambient noise input from the microphone 101 to the voice data generation unit 102. To generate audio digital data. Before acquiring the right to speak, the overall control unit 109 receives the estimated ambient noise level from the audio digital data generated by the audio data generation unit 102 and the ambient noise estimation unit 106. If the sound level is held in the ambient noise threshold storage / holding unit 108 in advance by the ambient noise determination unit 107 and compared with the threshold level of the ambient noise, and the ambient noise is determined to be loud! / The microphone 101 is put into a standby state without creating a floor acquisition request message. Furthermore, the mobile phone A displays on the display unit 111 that it has been unable to acquire the right to speak and notifies the mobile phone user. Note that the microphone 101 may be always operated, but as described above, the microphone 101 is activated only during the period until the PoC button 114 is pressed and it is determined that the force ambient noise is high. It can reduce the power consumption of the mobile phone required to measure the ambient noise.

[0086] On the other hand, if the ambient noise level is determined to be low by the ambient noise determination unit 107 before acquiring the floor, the overall control unit 109 creates a floor acquisition request message and generates the message. Is sent to the PoC server via the network IZF 105. Since the processing by mobile phone A, PoC server, and other mobile phones after sending the request to obtain a floor is as described in the sixth embodiment, description thereof is omitted.

[0087] As described above, according to the mobile phone provided with the noisy call control device according to the seventh embodiment of the present invention, it has been determined that the level of ambient noise in the vicinity of the mobile phone before the floor is acquired is greater than the threshold level. At this time, since the floor acquisition request message is not sent to the PoC server, the mobile phone terminal trying to acquire the right to transmit the voice cannot be heard by the user using the other mobile phone terminal. If there is a possibility, the mobile phone terminal can be prevented from transmitting the voice. In addition, when the mobile phone terminal trying to acquire the floor is determined that the ambient noise level is higher than the threshold level before the floor is acquired, the display unit displays that the floor has failed to be acquired. By notifying the mobile phone user, it is possible to immediately notify the user who uses the mobile phone terminal that there is a possibility that the voice that cannot be heard is transmitted.

[0088] Note that in the mobile phone equipped with the noisy call control device according to the seventh embodiment of the present invention, when the PoC button 114 is pressed, the microphone 101 is activated to determine the ambient noise level. As described above, the microphone 101 may be operated at other times to determine the ambient noise level. For example, it may be when the floor that another mobile phone has acquired is released, or when the floor is not acquired by a mobile phone that participates in a PoC call. These points in time are the time points or periods when the mobile phone A is likely to acquire the right to speak, so it takes more time to measure the ambient noise than the configuration in which the microphone 101 is always operating. While reducing the power consumption of the mobile phone, it is possible to effectively prevent the mobile phone terminal that has acquired the right to speak from transmitting audio that cannot be heard by users using other mobile phone terminals. The In this process, as shown in the sequence of FIG. 14, when the session has already been established between the mobile phone A and another mobile phone, the general control unit 109 receives a message non-speaking message from the PoC Sano. The microphone 101 is activated and the speaker's voice input from the microphone 101 and the ambient noise are heard during the period from when the voice is not granted or until the voice is granted. Audio digital by data generator 102 This can be realized by a configuration that generates data.

[0089] (Embodiment 8)

In the eighth embodiment of the present invention, the case where a mobile phone equipped with a noise control device is applied to the PoC call system will be described below as an example.

In Embodiments 6 and 7 of the present invention, when a session has already been established between mobile phone A and another mobile phone, the mobile phone terminal that has acquired the right to speak, or When the mobile phone terminal determines that the ambient noise level contained in the voice is greater than the threshold level, it sends a floor release message to the PoC server and terminates the transmission of the voice data, or requests to acquire the floor It was the composition which does not transmit. In Embodiment 8 of the present invention, the ambient noise level in the vicinity of the mobile phone terminal before the session is established between the mobile phone A and another mobile phone is compared with the threshold level, and the ambient noise level is If it is greater than the threshold level, the mobile phone terminal is not allowed to establish a session.

[0090] The flow of processing in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 8 of the present invention and a PoC server will be described in detail below. FIG. 15 shows a sequence in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 8 of the present invention and a PoC server. The configuration including the mobile phone equipped with the noisy call control device and the PoC server according to the eighth embodiment of the present invention is the same as the configuration described in the sixth embodiment, and thus the description thereof is omitted. FIG. 15 shows processing when mobile phone A used by user A establishes a session with another mobile phone, and mobile phone A performs call control under noise according to the eighth embodiment of the present invention. It corresponds to a mobile phone equipped with a device.

[0091] When user A designates another mobile phone that should make a PoC call and establishes a session for the other mobile phone (for example, pressing PoC button 114), the overall control of mobile phone A is performed. The unit 109 activates the microphone 101 before the session is established, and the voice data generation unit 102 generates the voice and ambient noise of the speaker input from the microphone 101 as voice digital data. The overall control unit 109 receives the audio digital data generated by the audio data generation unit 102 and the ambient noise estimation unit 106 to estimate the ambient noise level. When the estimated ambient noise level is held in the ambient noise threshold storage unit 108 in advance by the ambient noise determination unit 107 and compared with the ambient noise threshold level, and it is determined that the ambient noise is high Does not create a PoC call start request message (for example, Invite) requesting participation in the session, and puts the microphone 101 in a standby state. Further, the mobile phone A notifies the mobile phone user by displaying on the display unit 111 that he / she has not requested to participate in the session.

[0092] On the other hand, the overall control unit 109 creates a PoC call start request message when the ambient noise level is determined to be low by the ambient noise determination unit 107 before the session is established. The message is transmitted to the PoC server via the network IZF unit 105. After transmitting the PoC call start request message, the overall control unit 109 receives a response message (for example, 200 OK) in response to a request for participation in a session, and then the session with the other mobile phone is received. Will be established. Since the processing by mobile phone A, PoC server, and other mobile phones after session establishment is as described in Embodiments 6 and 7, description thereof is omitted.

As described above, according to the mobile phone including the noisy call control device according to the eighth embodiment of the present invention, when it is determined that the ambient noise level in the vicinity of the mobile phone before session establishment is greater than the threshold level, Since the PoC call start request message is not sent to the PoC server, the originating mobile phone terminal that has established the session sends voice that cannot be heard by the user using the other mobile phone terminal. When there is a possibility, the mobile phone terminal can be prevented from transmitting the voice. In addition, when a mobile phone terminal attempting to establish a session determines that the ambient noise level is greater than the threshold level before the session is established, the mobile phone terminal displays that the session has failed to be established on the display unit. By notifying the user, it is possible to immediately notify the user who uses the mobile phone terminal that there is a possibility that the voice that cannot be heard may be transmitted.

[0094] (Embodiment 9)

In the ninth embodiment of the present invention, the case where a mobile phone equipped with a noise control device is applied to the PoC call system will be described below as an example. In the eighth embodiment of the present invention, the level of ambient noise in the vicinity of the mobile phone A is set to the threshold level before the mobile phone A that is trying to establish a session establishes a session with another mobile phone. In comparison, if the ambient noise level is greater than the threshold level, the mobile phone terminal does not permit session establishment. In the embodiment 9 of the present invention, the level of ambient noise in the vicinity of the mobile phone A before the mobile phone A that has received a session establishment request from another mobile phone establishes a session with the other mobile phone. If the ambient noise level is greater than the threshold level, session establishment by the mobile phone terminal is not permitted.

The flow of processing in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 9 of the present invention and a PoC server will be described in detail below. FIG. 16 shows a sequence in a PoC system including a mobile phone equipped with a noisy call control device according to Embodiment 9 of the present invention and a PoC server. The configuration including the mobile phone equipped with the noisy call control device and the PoC server according to the ninth embodiment of the present invention is the same as the configuration described in the sixth embodiment, and thus the description thereof is omitted. FIG. 16 shows processing when another mobile phone establishes a session for mobile phone A used by user A, and mobile phone A performs call control under noise according to the eighth embodiment of the present invention. It corresponds to a mobile phone equipped with a device.

[0096] An operation in which a user using one of the other mobile phones designates a mobile phone including mobile phone A to make a PoC call and establishes a session for the mobile phone including mobile phone A (for example, PoC When the button 114 is pressed), when receiving the PoC call start request message, the overall control unit 109 of the mobile phone A operates the microphone 101 and the voice of the speaker input from the microphone 101. Ambient noise is generated as audio digital data by the audio data generation unit 102. The overall control unit 109 estimates the ambient noise level from the audio digital data generated by the audio data generation unit 102 by the ambient noise estimation unit 106, and the estimated ambient noise level is determined by the ambient noise determination unit 107. The response rejection message for rejecting participation in the session if the ambient noise is judged to be large V by comparing with the threshold level of the ambient noise held in the ambient noise threshold storage unit 108 in advance. (For example, Reject Response) is created and the message is sent to the PoC server via the network iZF unit 105. Also, the microphone 101 is set in a standby state. Furthermore, the mobile phone A displays on the display unit 111 that it has refused to participate in the session and notifies the mobile phone user.

[0097] On the other hand, when the overall noise control unit 109 receives the PoC call start request message and determines that the ambient noise level is low by the ambient noise determination unit 107, the overall control unit 109 responds to the session participation request. A response message that responds to the request is created, and the message is transmitted to the PoC server via the network I ZF unit 105. The overall control unit 109 establishes a session with another mobile phone after sending the response message. Since the processing by mobile phone A, PoC server, and other mobile phones after session establishment is the same as described in Embodiments 6 and 7, description thereof is omitted.

As described above, according to the mobile phone equipped with the noisy call control device according to the ninth embodiment of the present invention, when it is determined that the ambient noise level in the vicinity of the mobile phone before the session is established is greater than the threshold level, Since a response rejection message is sent to the PoC server, the mobile phone terminal that is requested to establish a session may send voice that cannot be heard by users using other mobile phone terminals. In this case, the mobile phone terminal can be prevented from transmitting the voice. In addition, when a mobile phone terminal requested to establish a session determines that the ambient noise level is higher than the threshold level before the session is established, the display unit displays that the session has failed to be established. By notifying the mobile phone user, it is possible to immediately notify the user who uses the mobile phone terminal that there is a possibility that sound cannot be heard and transmitted.

[0099] (Embodiment 10)

In the tenth embodiment of the present invention, the case where a cellular phone equipped with a noise control device is applied to the PoC call system will be described below as an example.

In Embodiments 6 to 9 of the present invention, mobile phone A compares the level of ambient noise in the vicinity of mobile phone A with a threshold level, and if that ambient noise level is greater than the threshold level, mobile phone A It was not allowed to speak. In Embodiment 10 of the present invention, the ambient noise level in the vicinity of the mobile phone is compared with the threshold level based on the audio digital data received by the PoC server. If it is larger, it is not allowed to speak by the mobile phone.

FIG. 17 shows a configuration diagram of the mobile phone according to the tenth embodiment of the present invention. The mobile phone according to the sixth embodiment of the present invention includes an ambient noise estimation unit 106, an ambient noise determination unit 107, and an ambient noise from the mobile phone including the noisy call control device according to the sixth embodiment of the present invention shown in FIG. A configuration without the noise threshold value memory holding unit 108, that is, a conventional mobile phone capable of making a PoC call without a function to judge whether the ambient noise level in the vicinity of the mobile phone is large or small! The configuration is the same as that of the terminal.

FIG. 18 shows a configuration diagram of a PoC server provided with the noisy call control device according to the tenth embodiment of the present invention. The configuration of the PoC server of the sixth embodiment of the present invention shown in FIG. 11 includes an IP packet generation unit 204, an ambient noise estimation unit 206, an ambient noise determination unit 207, an ambient noise threshold storage unit 208, and voice data processing. This is a configuration in which part 205 is added. Of the configuration of the PoC server according to the sixth embodiment of the present invention, the functional part having the same name as the configuration of the mobile phone according to the sixth embodiment of the present invention shown in FIG. 10 has the same function.

[0102] The floor control unit 213 receives a mobile phone power floor acquisition request message via the network IZF unit 205 when a session is established between a plurality of mobile phones. If the right to speak is not granted, the overall control unit 209 is caused to transmit the right to speak to the mobile phone. Then, of the mobile phone terminals participating in the PoC call from the floor control unit 213, the general control unit 209 that is notified of the mobile phone terminal to which the floor is granted gives the floor to the mobile phone. Send a voice message with the right to notify that it has been granted to another mobile phone, and start receiving voice digital data from the mobile phone. The overall control unit 209 transmits the voice digital data received from the mobile phone to which the right to speak is granted to the voice right !, NA! /, And other mobile phones via the network IZF 205.

[0103] The voice data processing unit 215 restores the packetized voice digital data, which is also received via the network IZF205, to one voice stream data, and also converts the voice stream data to ambient noise. Output to estimator 206. The sound digital data generated by the sound data processing unit 215 is used to estimate the ambient noise level by the ambient noise estimation unit 206, and the estimated ambient noise level is sent to the ambient noise determination unit 207. If the ambient noise is stored in advance in the ambient noise threshold storage unit 208 and compared with the ambient noise threshold level and it is determined that the ambient noise is low, the overall control unit 209 stores the restored audio stream data. The IP packet generation unit 204 again causes the IP packet to be transmitted, and the voice digital data is transmitted to another mobile phone with the right to speak.

On the other hand, when it is determined that the ambient noise is high, the overall control unit 209 controls the IP packet generation unit 204 to prevent the audio stream data from being IP packetized (at this time, the audio stream data is In addition, the right to speak is granted to the voice control unit 213 and the right to speak is deprived from the mobile phone V, and the right to speak is forcibly removed from the cellular phone that has been deprived of the right to speak. Talk rights deprivation message (e.g. Talk

Burst Revoke) is sent to other mobile phones as a non-speaking right message notifying that the right to speak has been released.

[0105] The flow of processing in the PoC system including the PoC server and mobile phone equipped with the noisy call control device of Embodiment 10 of the present invention will be described in detail below. FIG. 19 shows a sequence in the PoC system including the PoC server and mobile phone provided with the noisy call control device according to the tenth embodiment of the present invention. Note that FIG. 19 shows processing when mobile phone A used by user A transmits audio digital data to another mobile phone.

[0106] If a session is already established between mobile phone A and another mobile phone, and user A presses PoC button 114 and the mobile phone user tries to acquire the floor, Mobile phone A sends a message acquisition request message to the PoC server. The PoC server sends a floor grant message to mobile phone A in response to the floor acquisition request message, while the other mobile phone grants floor right to notify mobile phone A that the floor has been granted. Send a completed message. Mobile phone A that has received the right-to-speak message from PoC Sano displays on display 111 that it has acquired the right to speak and informs the mobile phone user that it will also start transmitting digital audio data. .

[0107] After starting to receive the audio digital data, the PoC server estimates the ambient noise level included in the received audio digital data, and compares the estimated ambient noise level with the ambient noise threshold level. . The PoC server then sends the floor-to-speech message from mobile phone A. Continues to estimate ambient noise level and compare to threshold level and send voice digital data to other mobile phones until a message is received or the ambient noise level is determined to be greater than the threshold level To do.

[0108] When the PoC server determines that the ambient noise level is greater than the threshold level after starting to receive audio digital data, the PoC server sends a voice deprivation message to mobile phone A, and the subsequent audio to the mobile phone. Stop sending digital data. In addition, the PoC server sends a non-speaking message notifying the other mobile phone that the speaking right has been released. When the mobile phone A receives a message from the PoC Sano, the mobile phone A stops sending the voice digital data to the PoC server, and also displays on the display unit 111 that it has released the right to speak to the mobile phone user. Notice.

As described above, according to the PoC server provided with the noisy call control device according to the tenth embodiment of the present invention, when it is determined that the level of ambient noise is greater than the threshold level after starting transmission of audio digital data. The PoC server sends a message to the mobile phone to which the right to speak has been granted and terminates the transmission of the voice data. Therefore, the mobile phone terminal that has acquired the right to speak is used. If there is a possibility of transmitting voice that cannot be heard by a user, it is possible to prevent the mobile phone terminal from transmitting the voice. In addition, when carrying out call control under noise according to the present invention, a new load is not generated on the mobile phones participating in the PoC call. In addition, when the mobile phone terminal that has acquired the right to speak has determined that the ambient noise level is greater than the threshold level after starting transmission of the voice digital data, the mobile phone terminal displays that the right to speak has been released on the display unit. By notifying the mobile phone user, it is possible to immediately notify the user who uses the mobile phone terminal that there is a possibility that an unintelligible voice may be transmitted.

[0110] In the description of each of the above embodiments, the mitaka voice data into which the voice of the speaker is input as the ambient noise is generated, and the voice data force is a power for estimating the ambient noise. It is also possible to prepare a microphone for measuring ambient noise separately and determine that ambient noise is high.

[0111] Also, in Embodiments 5 to 10, when it is determined that the ambient noise level is high, the PoC call is interrupted or a session for starting the PoC call is not established. However, before these processes are executed, the user using the mobile phone is notified that the level of ambient noise is high, and whether these processes are executed. You may be prompted to select whether or not.

[0112] In the sixth to tenth embodiments of the present invention, a case where a cellular phone provided with a noise control device is applied to the PoC call system has been described as an example. However, the PoC call system For example, the present invention can be applied to other systems that can acquire a floor and make a group call.

[0113] Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. is there.

[0114] This application is based on a Japanese patent application filed on August 2, 2005 (Japanese Patent Application No. 2005-223654), the contents of which are incorporated herein by reference.

Industrial applicability

[0115] As described above, the present invention does not send IP packets to the external network when the ambient noise is large, so the traffic on the external network is reduced and the IP packet traffic that is meaningless to the speaker is charged. This is useful as a mobile phone such as an IP phone that establishes a call by sending and receiving voice digital data via an IP packet via a network.

Claims

The scope of the claims

[1] voice data generation means for converting voice input to the microphone into digital data;

Ambient noise estimation means for estimating an ambient noise level from voice data obtained by the voice data generation means;

Ambient noise threshold storage holding means for holding a threshold level as a reference for determining that ambient noise is loud! /,

The ambient noise level obtained by the ambient noise estimation means and the ambient noise threshold value storage means; and the ambient noise judgment means for comparing the ambient noise threshold level;

If the ambient noise determination means determines that the ambient noise level is lower than the ambient noise threshold level held in the ambient noise threshold storage and holding means, selectively,

Ip packet generation means for ip packetizing the voice data;

Network interface means for transmitting the IP packet generated by the IP packet generating means to an external network

A mobile phone equipped with a noisy call control device.

[2] In addition, there is a notification message storage holding means for holding voice digital data indicating that the ambient noise is large! /

When the ambient noise determining means determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage holding means, the IP packet generating means

The voice digital data held in the notification message storage holding means is converted into an IP packet.

A mobile phone comprising the noisy call control device according to claim 1.

[3] When the ambient noise determination unit determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage and holding unit, the voice data is transferred to the external network. It further has a display means for displaying that it could not be sent A mobile phone comprising the noisy call control device according to any one of claims 1 and 2.

[4] Furthermore, it has a timer value storage holding means for holding a predetermined time interval,

If the ambient noise determination means determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage holding means, the voice data generation means,

4. The under-noise call control device according to claim 3, wherein the voice input to the microphone is converted into digital data after a time preset in the timer value storage and holding unit has elapsed since the determination by the ambient noise determination unit. Mobile phone equipped with.

[5] If the ambient noise determination means determines that the ambient noise level is greater than the ambient noise threshold level held in the ambient noise threshold storage holding means, the display means,

A message indicating that the voice input to the microphone is not digital data is displayed from the time when the ambient noise determination means determines until the time preset in the timer value storage holding means elapses. A mobile phone comprising the noisy call control device according to claim 4.

[6] A floor control unit that acquires a floor from a server that manages the floor through an external network;

Voice data generating means for acquiring voice by the voice control unit and converting voice input to the microphone during the period into digital data;

Ambient noise threshold storage and holding means for holding a threshold level that is a reference for determining that the ambient noise is large!

The ambient noise determination means stores the ambient noise level in the ambient noise threshold storage and holding hand. If it is determined that the threshold level of the ambient noise held in the stage is smaller than the threshold level,

Ip packet generation means for ip packetizing the voice data;

Network interface means for transmitting the IP packet generated by the IP packet generating means to a server via the external network

A mobile phone equipped with a noisy call control device.

[7] When the ambient noise determination means determines that the ambient noise level is greater than the ambient noise threshold level,

The floor control unit opens the acquired floor to the server.

A mobile phone comprising the noisy call control device according to claim 6.

[8] A floor control unit that acquires the floor from a server that manages the floor through an external network;

Voice data generating means for converting voice input to the microphone into digital data before the floor is acquired by the floor control unit;

IP packet generating means for obtaining voice data obtained by the voice data generating means during a period of time when the right to speak is acquired by the speaking right control unit, and generated by the IP packet generating means The IP packet is sent to the external network Network interface means for transmitting to the server via

A mobile phone equipped with a noisy call control device.

[9] The floor control unit receives a notification from the server that another telephone terminal has released the floor,

The voice data generation means includes a period including at least a time point at which the speaking right control unit receives a notification from the server that another telephone terminal has released the speaking right, before acquiring the speaking right by the speaking right control unit. To convert the audio input to the microphone into digital data

A mobile phone comprising the noisy call control device according to claim 8.

[10] The voice data generating means executes at least a time when the speaking right control unit is executing a process for acquiring a speaking right by the server before acquiring the speaking right by the speaking right control unit. 9. The mobile phone provided with the noisy call control device according to claim 8, wherein the voice input to the microphone is converted into digital data in a period including the digital data.

[11] The floor control unit receives a notification that the floor has not been granted from the server, and the voice data generation unit is configured to obtain the floor control unit before acquiring the floor by the floor control unit. 9. The noisy call control device according to claim 8, wherein the voice input to the microphone is converted into digital data during a period at least including a point in time when a notification that the right to speak is not granted is received from the server. Mobile phone with.