JP3032448B2 - Wireless telephone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication apparatus for communicating a communication signal and a control signal via a common channel.

[0002]

2. Description of the Related Art In a radio telephone system, a timer for a predetermined time is provided in order to eliminate an unpleasant sound caused by communication of control information performed prior to a telephone call. The audio circuit was closed for a time.

[0003]

However, for example, as shown in FIG. 4, the communication of the control signal with the communication control device in response to the key operation in the wireless handset repeats retransmission due to bad radio wave condition, If the processing is executed for more than the blocking timer time of the audio circuit due to processing delays in the communication control device or a large amount of control information, discomfort caused by the communication of the control information with the communication control device by the wireless slave unit will occur. There was a problem that sound could be heard.

[0004] It is an object of the present invention to prevent a control signal from becoming noise or unpleasant sound when control information is communicated during communication.

Another object of the present invention is to prevent a control signal transmitted in response to a signal corresponding to a key operation from becoming a noise or an unpleasant sound when a signal corresponding to a key operation is transmitted.

Still another object of the present invention is to prevent a control signal from becoming noise when transmission of a control signal is started from its own device and when transmission of a control signal is started from a communication partner.

Still another object of the present invention is to provide a communication system in which the countermeasure against the noise of the reception signal is performed by the slave and the countermeasure against the noise of the transmission signal is performed by the master at an appropriate timing.

[0008]

According to the present invention, first, when a key operation is performed in the wireless slave, the wireless slave closes the audio circuit and transmits control information accompanying the key operation via the master. To the communication control device. The communication control device communicates control information associated with a key operation from the wireless slave device via the wireless master device, and after the transmission of the control information is completed, sends an audio circuit release notification via the wireless master device to the wireless slave device. Send to And
The wireless slave device that has received the audio circuit release notification releases the audio circuit.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing an example of a first wireless telephone system embodying the present invention. This system includes a cordless handset (hereinafter referred to as a handset) 1 as a wireless handset, a cordless base station (hereinafter referred to as a base unit) 2 as a radio base station, and a communication control device 3 for controlling a telephone line. Consists of

The slave unit 1 has a communication unit 11, a control unit 12, an audio circuit 13, and an operation unit 14. The audio circuit 13 includes a handset, a speaker, and the like. Master device 2 includes communication unit 21 and control unit 22. Further, the communication control device 3
Has an exchange unit 31 and a control unit 32.

FIG. 2 is a sequence chart showing an operation example of the wireless telephone system of the present embodiment.
(B) is a slave unit 1 of the wireless telephone system of the present embodiment.
6 is a flowchart illustrating an operation example of the communication control device 3.

For example, when the hold key is pressed in the handset 1, control information relating to the display and control information regarding the state (during a call or on hold) are transmitted to the handset 1.

First, when a key operation such as a dial is performed on the operation unit 14 of the slave unit 1 (S11), the control unit 12 controls the operation of the control unit 12 so as to prevent the user from hearing an unpleasant sound caused by the control information communication. With the key operation as a trigger, the audio circuit 13 (receiving side) of the slave 1 is closed (S12). Note that the volume may be sufficiently lowered without completely turning off the reception output.

The handset 1 and the communication control device 3 communicate control information according to the key operation via the base unit 2, but the user does not hear the unpleasant sound accompanying it (S13, S11).
3). At this time, the control unit 32 of the communication control device 3
It is recognized that the audio circuit 13 of the child device 1 has been closed by transmitting the control information accompanying the key operation from. When detecting the control information from the handset 1, the control unit 32 mutes the transmission signal from the handset 1 so as not to send the control information to the other party. The control unit 32 releases the mute at the end of the reception of the control information from the child device 1. Also,
Also in this case, the volume may be lowered without completely muting.

When handset 1 returns a reception acknowledgment signal in response to control information from base unit 2, transmission from handset 1 is prohibited during a time period in which the reception acknowledgment signal is expected to be returned. The control unit 32 mutes the signal. That is, transmission and reception are muted at different timings.

Thereafter, the control unit 32 of the communication control device 3
After sending the control information to the child device 1 via the parent device 2, it is determined whether the communication of the control information is completed (S114).
If the communication of the control information is not completed, the above S
The state of 113 is continued.

When the communication of the control information is completed, the control unit 32 of the communication control device 3 transfers the voice circuit release notice to the slave 1 via the master 2 (S115). The control unit 12 of the child device 1 that has received the audio circuit release notification releases the audio circuit 13 (S16). As a result, a call can be made.

In the above description, as shown in S11, the audio circuit is closed due to the key operation of the handset 1, but then the communication control device 3 sends the call to the handset 1 via the master unit 2. Before starting communication of control information, an operation in the case where an audio circuit blockage notification is transmitted from the communication control device 3 to the slave unit 1 via the master unit 2 to thereby block the audio circuit will be described.

FIG. 5 is a sequence chart showing an operation example of the radio telephone system in this case.
(B) is a flowchart illustrating an operation example of the communication control device 3 and the slave 1 of the wireless telephone system.

First, when the control information for the slave unit 1 is generated in the communication control unit 3 (S311), the control unit 32 of the communication control unit 3 transmits the voice via the master unit 2 before sending the control information communication. A circuit blockage notification is sent (S312). The control unit 12 of the child device 1 that has received the audio circuit blockage notification (S32) closes the voice circuit 13 (reception side) (S33).

Next, control information is communicated between the slave unit 1 and the communication control device 3 via the master unit 2 (S34, S31).
4). Upon confirming that the communication is completed (S315), the control unit 32 of the communication control device 3 sends an audio circuit release notification via the parent device 2 (S316), and controls the slave 1 that receives the audio circuit release notification. The unit 12 opens the audio circuit 13 (S
37). As described above, the unpleasant sound accompanying the communication of the control information is avoided. In this case, an unpleasant sound in communication of control information caused by a command of the communication control device 3 can be avoided. Note that, similarly to the above, the control unit 32 mutes the transmission signal during a time period in which the return of the reception confirmation signal from the slave 1 is expected.

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

FIG. 7 is a block diagram showing an example of a second wireless telephone system embodying the present invention. This system includes a cordless handset (hereinafter referred to as a handset) 1 as a wireless handset, and a wireless base unit 2 connected to a wired line.

FIG. 8 is a sequence chart showing an operation example of the wireless telephone system according to the present embodiment.
(B) is a slave unit 1 of the wireless telephone system of the present embodiment.
6 is a flowchart illustrating an operation example of a master device 20.

First, when a key operation such as a dial is performed on the operation unit 14 of the slave unit 1 (S21), the control unit 12 controls the control unit 12 so as to prevent the user from hearing an unpleasant sound due to the communication of the control information. With the key operation as a trigger, the audio circuit 13 (receiving side) of the slave 1 is closed (S22).

Next, control information is communicated between the child device 1 and the parent device 20, but the user does not hear any unpleasant sounds (S23, S213). At this time, the control unit 24 of the parent device 20 recognizes that the audio circuit 13 of the child device 1 has been closed by receiving the control information accompanying the key operation from the child device 1. The control unit 24 mutes the transmission signal, similarly to the control unit 32 of the previous embodiment.

Thereafter, the control unit 24 of the master unit 20 determines whether the communication of the control information has been completed (S214). If the communication of the control information is not completed, the above S2
State 13 is continued.

When the communication of the control information is completed, the control unit 24 of the master unit 20 transfers an audio circuit release notification to the slave unit 1 (S215). The control unit 12 of the child device 1 that has received the audio circuit release notification releases the audio circuit 13 (S2).
6).

Although the present invention has been described based on the preferred embodiment, the present invention is not limited to the configuration of the above embodiment, and various modifications are possible. For example, the present invention is not limited to a wireless telephone system, and can be applied to a wired communication system in which a communication signal and a control signal are communicated on a common channel.

[0031]

As described above, according to the present invention,
The effect that the unpleasant sound caused by the communication of the control information that could not be eliminated by the timer setting time of the audio circuit blockage timer can be eliminated when the processing in the communication control device is delayed or the control information becomes large. There is.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a sequence chart showing a first operation of the first embodiment.

FIG. 3 is a flowchart showing a first operation of the first embodiment.

FIG. 4 is a sequence chart showing the operation of the conventional example.

FIG. 5 is a sequence chart showing a second operation of the first embodiment.

FIG. 6 is a flowchart showing a second operation of the first embodiment.

FIG. 7 is a block diagram showing a second embodiment of the present invention.

FIG. 8 is a sequence chart showing the operation of the second embodiment.

FIG. 9 is a flowchart showing the operation of the second embodiment.

[Explanation of symbols]

 1 ... slave unit, 2 ... master unit, 3 ... communication control device.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/725 H04M 1/60 H04B 7/26 H04Q 7/38

Claims (16)

(57) [Claims] 1. A wireless telephone system having a wireless master unit, a wireless slave unit, and a communication control device, wherein the wireless slave unit closes an audio circuit by operating a key of the wireless slave unit, and a communication control device. Voice circuit release means for releasing a voice circuit by a voice circuit release notification via a wireless master device, the communication control device wirelessly transmits the voice circuit release notification after completion of transmission of control information to the wireless slave device. Having a voice circuit release notifying means for sending to the wireless slave via the master unit, based on a key operation in the wireless slave unit, after the voice circuit is closed by the voice circuit closing means, and A wireless telephone system wherein the audio circuit is closed until the audio circuit is opened in the wireless handset in response to the audio circuit release notification. 2. The communication control device according to claim 1, wherein the communication control device includes an audio circuit blockage notifying unit that communicates the blockage of the audio circuit to the wireless slave via the wireless master unit. A wireless telephone system characterized in that, when control information is generated, the above-mentioned audio circuit blockage notification is executed to close the audio circuit. 3. A wireless telephone system having a wireless base unit and a wireless handset, wherein the wireless handset includes an audio circuit closing means for closing an audio circuit by a key operation of the wireless handset, and an audio circuit opening from the wireless base unit. Voice circuit release means for releasing the voice circuit by the notification, the wireless master device, after completing the transmission of the control information to the wireless slave device,
Voice circuit opening notifying means for notifying the wireless slave of the opening of the audio circuit of the wireless slave, and based on a key operation in the wireless slave, after the audio circuit is closed by the audio circuit closing means, A wireless telephone system, wherein the voice circuit is closed until the voice circuit is opened in the wireless handset in response to the voice circuit release notification from the wireless base unit. 4. A receiving means for receiving a communication signal; an operating means for requesting transmission of a control signal; a transmitting means for transmitting a control signal in response to an operation of the operating means; To limit the output of the received signal,
A reception signal in response to reception of a predetermined signal by the reception means;
And a restriction means for canceling the restriction on the output of the communication device. 5. A Oite to claim 4, wherein the limiting means, predetermined received Ri by said receiving means
A communication device for limiting output of a received signal according to a notification signal . 6. The method according to claim 4 or 5, wherein the transmitting means and the receiving means, communication device, characterized in that transmitting and receiving radio signals. 7. The method according to claim 4, wherein The limiting unit is configured to control a reception signal from an audio circuit including a speaker.
A communication device for limiting the output of a signal. 8. A communication system comprising a master unit and a slave unit, wherein the slave unit receives a signal from the master unit, an operation unit for requesting transmission of a control signal, and an operation unit for operating the operation unit. transmitting means for transmitting a signal to the base unit depending on, limiting the output of the received signal in response to operation of the operation means,
A reception signal in response to reception of a predetermined signal by the reception means;
And a restriction means for releasing the restriction on the output of the communication system. 9. The method of claim 8, wherein the limiting means, predetermined received Ri by said receiving means
A communication system wherein output of a reception signal is restricted according to a notification signal . 10. The communication system according to claim 8 , wherein the master unit and the slave unit transmit and receive a radio signal. 11. The communication system according to claim 8 , wherein the master unit limits output of a signal from the slave unit according to a control signal from the slave unit. . 12. The communication system according to claim 11 , wherein the master unit limits a signal output from the slave unit for a predetermined time. 13. The slave device according to claim 8 , wherein the master device transmits control information to the slave device, and restricts a reception signal such that a response to the control information from the slave device is muted. A communication system, comprising: 14. The method according to claim 8, wherein:
hand, The limiting unit is configured to control a reception signal from an audio circuit including a speaker.
A communication device for limiting the output of a signal. 15. Receiving a communication signal and responding to a predetermined operation
Transmitting a control signal, limiting output of a signal received in response to the predetermined operation, and receiving a control signal in response to reception of the predetermined signal.
A method for restricting the output of a received signal, wherein the restriction on the output of the signal is released . 16. The method according to claim 15, wherein Including the speaker of the signal received in response to the predetermined operation
Characterized by limiting the output from the audio circuit
Restriction method.