JP2550056B2 - Voice dial telephone - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a voice dial control device in a telephone, and more particularly to an automatic dial device using voice recognition,
The present invention relates to a voice dial telephone which can preferably respond to an incoming call signal.

[Conventional technology]

In order to respond to an incoming call in a normal telephone, a person hears a bell sound driven by an incoming call signal (call signal) and lifts the handset (off-hook) to connect the telephone to the line and enter a call. . The calling operation (dial operation) is performed by a person lifting the handset, connecting the telephone to the line, and sending a dial signal to the line by a rotary dial or a push button.

As described above, an ordinary telephone always requires a lifting and holding operation by a hand or a push button operation by a finger when an incoming call or a call is made and during a call.

On the other hand, so-called hands-free telephones (loudspeaker telephones), in which both hands can be freely used, have been conventionally used. However, I can use my microphone and speaker to freely use both hands during a call, but when I receive a call, I just have to listen to the bell and press the off-hook button by hand to replace the usual telephone handset lift and answer. Without
When making a call, it was necessary to push a push button by hand to send a dial signal. So it wasn't completely hands-free.

Therefore, it is inconvenient when the user is inconvenient to make a call, for example, when he / she wants to make a call while driving a car with a car telephone.

As a technique for solving such a drawback, Japanese Patent Laid-Open No. 56-
There is an automatic dial device using the voice recognition technology described in 138353 or JP-A-58-51659. This is to automatically send a dial signal by voice.

[Problems to be solved by the invention]

However, in the above-mentioned conventional automatic dialing device, no consideration is given to incoming call, that is, ringing while voice is being input to make a call, and as a result, the ringing bell is activated while the voice for calling is being voiced. There was a problem that the ringing, the voice and the bell sound were recognized at the same time, which caused malfunction.

An object of the present invention, in an automatic dialing device using voice recognition, while uttering a voice for a call, and during the voice generation at the time of voice registration for voice recognition, eliminate the ringing ringing sound, It is an object to provide a voice dial telephone capable of preventing malfunction.

[Means for solving problems]

The above-described object is to provide an incoming call detecting means for detecting a calling signal, an incoming call notifying means for notifying an operator of an incoming call by an audible sound based on an output of the incoming call detecting means, a voice recognizing means, and the voice recognizing means. A voice recognition operation detecting means for detecting whether the voice recognition means is operating or not, a voice recognition processing state detecting means for detecting a processing state of the voice recognition means during operation, and an incoming call by the incoming call detecting means. When it is detected, based on the detection outputs of the voice recognition operation detection means and the voice recognition processing state detection means, at least when the voice recognition means is in the voice input waiting state and during the voice input processing, after the end of the processing, This is achieved by providing control means for driving the incoming call notifying means in response to the detection of the incoming call by the incoming call detecting means.

When a call is made while voice is being input to the voice recognition means for making a call, the incoming call detection means detects the call,
The control means controls the incoming call notifying means according to the detection outputs of the voice recognition operation detecting means and the voice recognition processing state detecting means,
Withhold the generation of audible sound. After that, the control means controls the wear notification means at least at the time when the voice recognition means detects at least that the voice recognition means has finished capturing the input voice from the detection outputs of the voice recognition operation detection means and the voice recognition processing state detection means. Generate. The operator hears the audible sound and knows that there is a call.

In this way, it is possible to prevent an audible sound indicating an incoming call from being mixed with the input voice, and prevent a malfunction of the voice recognition process.

Similarly, at the time of voice registration for voice recognition, audible sound is prevented from being mixed with the input voice.

〔Example〕

 The present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an example of a telephone set to which an embodiment of the present invention is applied. The telephone set has both a handset call function and a hand-free call function, and voice recognition is performed in the hand-free call mode. It is an automatic dial.

In FIG. 1, reference numeral 40 is a call signal path means, 41 is a control storage means, 42 is an input means, 43 is an incoming call notification means, 44 is a voice recognition circuit operation determination means, and 1-1 and 1-2 are line terminals. 2 is the handset, 3 and 4 are the handsets built into the handset,
Transmitter, 5 is a cook switch that opens when the handset is placed and closes when lifted, 6 is a sound-proof sound circuit that performs 2-wire to 4-wire conversion, 7 is a switching circuit that switches between handset call and hand-free call, 8 Is a voice switch system hand-free call circuit that enables hands-free call by voice switch system, 9 is a speaker, 10 is a microphone,
11 is an incoming call detection circuit that detects a ringing signal transmitted from an exchange (not shown), 12 is a dial signal generation circuit that transmits a dial signal to the line, 13 is a dial push button for inputting a dial number, and 14 is a voice A recognition circuit, 15 is a voice recognition operation for detecting whether the voice recognition circuit 14 is operating, for example, for voice recognition for calling or for registering voice for voice recognition, or for stopping the operation. The detection circuit 16 is a processing state during the operation of the voice recognition circuit 14, for example, a state waiting for voice input,
A voice recognition processing state detection circuit that detects whether a voice is being captured or whether the similarity is being calculated, and 17 is a bell that generates a bell sound to notify the operator of an incoming call with an audible sound. A sound generation circuit, 18 is a bell speaker, 19 is a hook button switch pressed by an operator in place of lifting and putting back the handset during a hands-free call, and 20 switches a handset call mode / hand-free call mode Is a mode switch for controlling the opening and closing of the hook switch 5. An automatic hook switch replaces the hook switch 5, a control circuit 22 controls the whole, and a registration switch 31 performs registration work.

First, the handset call mode, that is, the operation as an ordinary telephone will be described.

The operator switches the mode switch 20 to the handset talk mode. The control circuit 22 reads the state of the mode switch 20 and controls the switching circuit 7 to switch the signal path of transmission / reception to the handset 2 side.

When a call signal is sent from the exchange, that is, when there is an incoming call, the incoming call detection circuit 11 detects this calling signal and notifies the control circuit 22 of it. Since the control circuit 22 stores the handset call state of the mode switch 20, it immediately controls the bell sound generation circuit 17 to emit a bell sound from the bell sound speaker 18 to notify the operator that there is an incoming call. . The operator lifts the handset 2. In response to this, the hook switch 5 is closed, the telephone is connected to the line, and the receiver / transmitter in the handset 2 can talk with the other party via 3, 4. When the call ends, the operator puts the handset on, the hook switch 5 is opened and the telephone is disconnected from the line.

In the case of making a call, first, when the operator lifts the handset 2, the hook switch 5 is closed and the telephone is connected to the line. Here, the operator inputs the telephone number of the other party by using the dial push button 13. In response to this input, the dial signal generation circuit 12 sequentially sends the dial signals to the line via the control circuit 22. With this dial signal,
The exchange selects and dials the other party and connects the line to the other party.

Next, the operation of the voice recognition circuit 14 will be described. The voice recognition circuit 14 is for practically recognizing a word voice which is practically divided and uttered by a specific speaker. However, the present invention is not limited to this.

First, the voice registration for voice recognition will be described. In order to recognize the voice, it is necessary to register the voice of the operator in advance. This voice registration is performed by the registration switch 31.
When is pressed, the control circuit 22 causes the voice recognition circuit 14 to perform a voice registration operation. At this time, voice is input from the microphone 10 and sequentially stored as a standard pattern in a standard pattern memory (not shown) in the voice recognition circuit. It is an action. For example, when the utterance "Suzuki" is made, this utterance is cut out by a voice cut-out circuit (not shown), and this feature is analyzed and extracted and stored in the standard pattern memory as a time series parameter pattern. Each time you say "Sato,""Ota," etc., each standard pattern is additionally stored in the standard pattern memory.

Next, the basic operation of voice recognition will be described. When the hands-free call mode is set by the mode switch 20, the hook button switch 19 is pressed to activate the voice recognition circuit 14, and at this time, the same voice as previously registered, for example, "Suzuki" is input from the microphone 10. Then, this voice is cut out as in the case of registration and is temporarily stored in an input pattern memory (not shown) as a characteristic parameter pattern. Next, the contents of this input pattern memory,
The standard patterns in the standard pattern memory are sequentially compared,
Information about which standard pattern was most similar is output as a result. In this case, the standard Suzuki code pattern code is output. As this comparison method, a known DP matching method or a similarity calculation method such as absolute value difference is used.

Next, a voice and telephone number registration operation for automatic dialing by voice recognition will be described.

When the operator presses the registration switch 31, the control circuit 22 first causes the voice recognition circuit 14 to perform a voice registration operation. After that, when the operator utters the name of the person who automatically dials, for example, "Suzuki", this voice "Suzuki" is stored as a standard pattern by adding the code "○○" to the standard pattern memory in the voice recognition circuit 14. To be done. The control circuit 22 then deactivates the voice recognition circuit 14. Thereafter, the operator inputs Mr. Suzuki's telephone number, for example, "100", using the dial push button 13. This telephone number is stored in a telephone number memory (not shown) in the control circuit 22. At this time, the code "OO" of the previous standard pattern is also stored in the telephone number memory at the same time. Next, the control circuit 22 causes the voice recognition circuit 14 to again perform the voice registration operation. Then, the operator utters the name of the next person to be automatically dialed, for example, "Sato". The voice "Sato" is likewise stored in the standard pattern memory as a standard pattern with the code "01". The control circuit 22 then deactivates the voice recognition circuit 14. afterwards,
The operator inputs Mr. Sato's telephone number, for example, "101", using the dial push button 13. This telephone number is likewise stored in the telephone number memory together with the standard pattern code "01". Repeat the registration as needed below.

At the time of this registration work, when a call signal is sent from the exchange, that is, when there is an incoming call, the incoming call detection circuit 11 detects this calling signal and notifies the control circuit 22 of it. At this time, the control circuit 22
Stores the registration operation by the registration switch 31,
First, the operation of voice recognition, which is the output of the voice recognition operation detection circuit 15, is monitored, and when it does not operate, the bell sound production circuit 17 is controlled, a bell sound is emitted from the bell sound speaker 18, and the operator receives an incoming call. Notify that there was. When the voice recognition circuit 14 is operating, the output of the voice recognition processing state detection circuit 16 is further monitored, and at least when the voice input is on standby or voice is being taken in, the utterance of the bell sound is suspended and the voice is taken in. When the step ends, the bell sound generation circuit 17 is controlled to emit the bell sound.

The operator hears the bell sound, suspends the continuation of the registration work, and lifts the handset 2 for a handset call. Hook button switch for hands-free calls
Press 19. The call at this time is either a handset call or a hand-free call depending on the state of the switching circuit 7 according to the mode switch 20. Handset If you are on the talking side, when you lift the handset 2, the hook switch 5 will close and you will be connected to the line.
Use 3 and 4 to talk to the other party. When the call ends and the operator places the handset 2, the hook switch 5 is opened and the line is disconnected. If you are a hands-free caller,
When the hook button switch 19 is pressed, the control circuit 22 controls the automatic hook switch 21 to close it and connect the telephone to the line. The operator talks with the other party through the hands-free call circuit 8 using the speaker 9 and the microphone 10. When the call ends and the hook button switch 19 is pressed again, the control circuit 22 controls the automatic hook switch 21 to open it, so that the line is disconnected.

When the call ends in this way, the operator returns to the previous registration work. At this time, the control circuit 22 has driven the bell sound generation circuit 17, that is, the voice recognition operation detection circuit 15
Since the output of the voice recognition processing state detection circuit 16 is stored, for example, if a bell sound is generated at the time when the second name is uttered, the second person's telephone number, which is the next registration work, is input. Control can be returned to the process. The voice and telephone number registration operation for automatic dialing is terminated by pressing the registration switch 31 again.

FIGS. 5 and 10 are flowcharts showing the operation of the control circuit 22 during the voice and telephone number registration operation described above.

Note that FIG. 5 is a main flowchart at the time of registration operation, and FIG. 10 is a flowchart of the incoming call interrupt processing started in response to the output of the incoming call detection circuit 11.

 Next, the operation of hands-free call will be described.

When the operator switches the mode switch 20 to the hands-free call mode, the control circuit 22 controls the switching circuit 7 to transmit and
The signal path for reception is switched to the side of the voice switch type hands-free communication circuit 8.

When a call signal is sent from the exchange, that is, when there is an incoming call, the incoming call detection circuit 11 detects this calling signal and notifies the control circuit 22 of it. At this time, the control circuit 22 is a mode switch
Since 20 hands-free call states are stored, the operation of voice recognition, which is the output of the voice recognition operation detection circuit 15, is first monitored, and if it does not operate, the bell sound generation circuit 17 is controlled and the bell sound speaker is operated. A bell is emitted from 18 to notify the operator that an incoming call has been received. The operator hears the bell sound and presses the hook button switch 19. In response to this, the control circuit 22 controls the automatic hook switch 21 to close the switch state and connect the telephone to the line. The operator talks with the other party via the voice switch type hands-free call circuit 8 using the speaker 9 and the microphone 10. When the call ends, the operator presses the hook button switch 19 again. This allows the control circuit
22 controls the automatic hook switch 21 to open the switch state and disconnect the telephone from the line.

On the other hand, if the voice recognition circuit 14 is in the recognition operation for making a call, the control circuit 22 knows this by the voice recognition operation detection circuit 15,
Furthermore, the voice recognition processing state output from the voice recognition processing state detection circuit 16 is monitored. If the processing state is a voice input waiting state or a voice is being captured, the bell sound generation circuit 17 is controlled to suspend the generation of the bell sound. Then, when the processing state finishes capturing the voice, the bell sound generation circuit 17
And the bell speaker 18 emits a bell sound to notify the operator of the call. The operator hears the bell sound, interrupts the calling work, and presses the hook button switch 19. In response to this, the control circuit 22 controls the automatic hook switch 21 to connect the closed / closed telephone to the line. The operator talks with the other party using the speaker 9 and the microphone 10 via the voice switch type hands-free call circuit 8. When the call ends, the operator presses the hook button switch 19 again. This causes the control circuit 22 to open the automatic hook switch 21 and disconnect the telephone from the line.

When the call is thus ended, the operator can return to the previous calling work. At this time, the control circuit 22 stores at what time the bell sound generating circuit 17 was driven, that is, the outputs of the voice recognition operation detection circuit 15 and the voice recognition processing state detection circuit 16, so that the operator first performs the operation. The next stage of the calling work that has been performed can be continued.

Here, details of the calling operation in the case of a hands-free call will be described. The voice recognition described above is used for this call. When making an outgoing call, the operator first pushes the hook button switch 19. In response to this, the control circuit 22 causes the voice recognition circuit 14 to perform the voice recognition operation. The operator utters the name of the other party who registered the voice before the call is made, for example, "Suzuki" according to the signal of the voice recognition circuit 14. It should be noted that this signal is obtained by the operation of the electronic sound generation circuit (not shown) in the voice recognition circuit 14 when the voice recognition circuit 14 performs the voice recognition operation. Of course, the hook button switch 19 may be pressed to generate the signal immediately without a signal.

This utterance is picked up by the microphone 10 and input to the voice recognition circuit 14. The voice recognition circuit 14 takes in this voice, and as described in the description of the basic operation of the voice recognition, the input voice pattern "Suzuki" and "Suzuki", "Sato", "Ota" which are registered in advance. , Etc., and the code of the most similar standard pattern, in this case, the code “00” (indicating the standard pattern of “Suzuki”) is output to the control circuit 22.

However, since there is an erroneous recognition in the voice recognition, it is necessary to confirm the recognition result. Therefore, the voice recognition circuit 14 presents and confirms the recognition result to the operator. This is done as follows, for example. The voice recognition circuit 14 has a voice synthesis circuit (not shown) having a voice corresponding to the most similar standard pattern therein.
Utter using "," and "high" or "yes" to the operator
Ask for. The utterance of the operator at this time is also recognized by the voice recognition circuit 14. Naturally, this "high" and "yes"
The voice must be registered as voice as described above. It is not necessary to confirm the recognition result of “high” and “yes” because the number of categories is 2 and the recognition rate is high. When the operator confirms that it is correct and inputs “high”, the code of “00” and the code of “high” are output to the control circuit 22 again. In response to this, the control circuit 22 controls the automatic hook switch 21 to close it and connect the telephone to the line. After that, referring to the "00" code, obtains Mr. Suzuki's telephone number "100" stored in the telephone number memory, controls the dial signal generation circuit 12, and sends a "100" dial signal to the line. .

When the operator confirms that it is wrong and inputs "yes", the code "00" and the code "yes" are output to the control circuit 22 again. After that, the voice recognition circuit 14 signals the operator again, prompts re-input (name of the other party of the telephone), and repeats the above sequence.

If the operator confirms that he / she has made a mistake and inputs “No”, a standard pattern voice similar to the first occurrence, for example, “Sato” is presented by voice synthesis, and “High” and “No” are again displayed. The method of asking for the utterance of In this case, if "high" is input, the "sato" code "0"
The 1 "and" high "codes are output to the control circuit 22. When the control circuit 22 sees the "high" code, it controls the automatic hook switch 21 to close it as before, and connects the telephone to the line. After that, referring to the code "01", obtains Mr. Sato's telephone number "101" stored in the telephone number memory, controls the dial signal generation circuit 12, and sends the dial signal "101" to the line. .

When the call with the other party is completed, the operator presses the hook button switch 19 again. In response to this, the control circuit 22 opens the automatic hook switch 21 and disconnects the telephone from the line.

The operation when there is a call during this calling work is as described above, waiting for voice input for voice recognition, or holding the generation of the bell sound during voice capture and ending voice input. At that point, a bell sound is generated to inform the operator that a call has been made.

6 and 10 are flowcharts showing an example of the operation of the control circuit 22 in the above-mentioned hands-free call mode. 6. FIG. 6 is a main flow chart of the hands-free call mode, and FIG. 10 is a flow chart of the incoming call interruption processing which is started in response to the output of the incoming call detection circuit 11 as described above.

As described above, according to the present embodiment, since the generation of the ringing tone for informing the call is suspended at least in the voice input waiting state or during the voice capturing, the ringing tone is generated in the voice for voice registration or the voice for voice recognition. Is prevented from being mixed,
There is no malfunction. In addition, it is possible to accept a call during registration work or call work by voice recognition. Then, after the call ends, it is possible to continue the interrupted work.

In the above embodiment, the speaker 9 and the bell sound speaker are used.
18 may be shared. Bell sound generation circuit
You can replace 17 with a voice synthesizer circuit and use a voice such as "Calling" instead of the bell sound. Further, in FIG. 1, the dial signal generating circuit 12 is connected to the line side because it is used as the source of the pulse dial signal, but if it is the source of the DTMF signal, the four lines of the protection side sound circuit 6 are connected. It is preferable to connect the output to the side transmission signal path.

FIG. 2 is a block diagram showing another example of a telephone set to which another embodiment of the present invention is applied. In FIG. 2, the same symbols as those in FIG. 1 indicate the same or equivalent items. Reference numeral 23 is an echo loop switch, and 24 is an echo cancellation type hands-free communication circuit.

In FIG. 2, an echo canceling type hand-free call circuit 24 is used as the hand-free call circuit, and for this reason, an echo loop switch 23 is inserted between the switching circuit 7 and the soundproof side sound circuit 6.

In FIG. 1, since the voice switch type hands-free call circuit 8 is used, even if the switching circuit 7 is on the hands-free call side, the voice signal input to the microphone 10 for voice registration or voice recognition is It is reflected by the protection side sound circuit 6 and is not output from the speaker 9. This is because the voice switch type hands-free communication circuit 8 enables one-way communication as is well known, and is based on the principle that when transmitting, that is, when inputting from the microphone 10, a large loss is inserted in the receiving path, that is, the signal path of the speaker 9. Because it is based. Therefore, in the case of the voice switch type hands-free call circuit 8,
The echo loop switch 23 is unnecessary.

However, when the echo cancellation type hand-free call circuit 24 is used as the hand-free call circuit as shown in FIG. 2, the sound signal from the microphone 10 is reflected by the protection side sound circuit 6 and output from the speaker 9. there is a possibility. That is, in the echo canceling method, the input signal from the microphone 10 is reflected by the anti-sidetone circuit 6 and is radiated into the room from the speaker 9, which is reflected by a wall or the like and cancels the signal input to the microphone 10 again. Echo (echo sound) is canceled by creating a signal using a digital filter, etc. in a pseudo manner, and echo sound is prevented from being sent to the line. Convergence response of the previous digital filter, etc. Depending on the time, the input voice is output from the speaker 9 for several tens to several hundreds of ms from the input and reverberates on a wall or the like. As a result, the reverberation sound may be superimposed as noise on the voice due to the registered voice or dialing, and malfunction may occur.

The echo loop switch 23 cuts off this echo. That is, the reverberation loop switch 23 is opened at the time of voice input other than the call, so that the voice input from the microphone 10 is prevented from being output via the speaker 9.

In the present embodiment, the switch 23 is inserted in the transmission path. However, the switch 23 is provided between the microphone 10 and the transmission input of the echo cancellation system hand-free communication circuit 24 or between the speaker 9 and the echo cancellation system hand-free communication. It may be inserted between the received output of the circuit 24. Further, instead of providing the echo loop switch 23, the switching circuit 7 may be set to the handset side during voice input other than a call. In other words, when using the echo cancellation system hands-free communication circuit 24, a switch circuit is provided somewhere in the loop loop composed of the microphone 10, the echo cancellation system hands-free communication circuit 24, the side sound circuit 6, and the speaker 9. On the other hand, the loop may be disconnected at the time of voice input other than the passage.

Other operations in this embodiment are the same as those in the embodiment shown in FIG. According to the present embodiment,
Even if an echo cancellation type hand-free call circuit is used as the hand-free call circuit, the same effect as that of the embodiment shown in FIG. 1 can be obtained.

FIG. 3 is a block diagram showing another example of a telephone set to which another embodiment of the present invention is applied. This telephone has a function of automatically dialing by voice recognition from a handset and a function of holding a call.

In FIG. 3, the same symbols as those in FIG. 1 indicate the same or equivalent items. 25 is a speech path switch that opens and closes the signal path from the handset 2 or the hands-free speech circuit 8, 26 is a mixing circuit that mixes the held voice with the transmission signal path, 27 is a held voice synthesis circuit that synthesizes the held voice, and 28 is A voice switching circuit for switching between the output of the transmitter 4 and the microphone 10 of the handset 2 and inputting it to the voice recognition circuit 14, 29 is a hold button that conveys an intention to keep attention,
Reference numeral 32 is a hook detection circuit for detecting whether the handset 2 is placed or lifted.

First, the operation of the handset call mode will be described. The operator places the mode switch 20 in the handset talk position. In response to this, the control circuit 22 sets the switching circuit 7 to the handset side and simultaneously sets the voice switching circuit 28 to the transmitter 4. Now you can make calls with your handset,
The transmitter 4 serves as an input means to the voice recognition circuit 14 for voice recognition or voice registration.

When a call signal is sent from the exchange, that is, when there is an incoming call, the incoming call detection circuit 11 detects this calling signal and informs the control circuit 22 of it. The control circuit 22 is a voice recognition operation detection circuit.
The voice recognition circuit that monitors the voice recognition operation that is the output of 15
When 14 is inoperative, that is, when the operator is on standby, the bell sound generation circuit 17 is controlled and a bell sound is emitted from the bell sound speaker 18 to notify the operator that an incoming call has been received. The operator hears the bell and lifts the handset 2. The hook detection circuit 32 detects this lifting and informs the control circuit 22. In response, the control circuit 22 has an automatic hook switch.
21 and the speech path switch 25 are controlled to be closed, the telephone is connected to the line and the speech path is closed. After that, the operator talks with the other party by using the handset 2. When the call ends, the operator puts the handset on. The hook detection circuit 32 detects that the handset is placed and informs the control circuit 22. In response, the control circuit 22 causes the automatic hook switch 21
Then, the call path switch 25 is controlled and opened, and the telephone is separated from the line and the call path is opened.

Here, the holding operation in the handset call mode will be described. The operator hears the bell and presses the hold button 29 when he / she wants to hold the temporary call. The control circuit 22 controls the automatic hook switch 21 to close it in response to the pressing of the hold button 29, and connects the telephone to the line. After that, the control circuit 22 controls the hold voice synthesizing circuit 27 to synthesize a voice such as “please wait for a while” with the other party, and sends the voice to the line through the mixing circuit 26 and the side soundproof circuit 6.
Let the other person know and wait. When the operator can talk and lifts the handset 2, the hook detection circuit 32
Detects this lifting operation and informs the control circuit 22.
In response to this, the control circuit 22 controls the communication path switch 25 to close it. After that, the operator talks with the other party by using the handset 2. When the call ends, the operator puts the handset on. The hook detection circuit 32 detects that the handset is placed and informs the control circuit 22. In response to this, the control circuit 22 controls the automatic hook switch 21 and the speech path switch 25 to be opened, thereby separating the telephone from the line and opening the speech path.

Next, the operation in the case where an incoming call is received during the registration or calling work in the handset call mode will be described.

When the voice recognition circuit 14 is operating for automatic dialing or for registration work, the control circuit 22 outputs the voice recognition operation detection circuit 15 and the voice recognition circuit 14 is operating. Then, the output of the voice recognition processing state detection circuit 16 is monitored. Then, at least when waiting for a voice input or capturing a voice, the control circuit 22 suspends the generation of the bell sound and controls the bell sound generation circuit 17 to emit the bell sound at the time when the capture of the voice is completed. . The operator hears the bell and knows that there is an incoming call. At this time, the operator holds the handset in his hand and is in the process of registration or calling. The operator suspends the continuation of the present work and presses the hook button switch 19. The control circuit 22 detects that the hook button switch 19 has been pressed and closes the automatic hook switch 21 and the communication path switch 25. As a result, the operator can talk with the other party by using the handset 2 currently in his hand. When the call ends, press the hook button switch 19 again. Accordingly
The control circuit 22 includes an automatic hook switch 21 and a call path switch 25.
To open the phone, disconnect the phone from the line, and open the communication path.

When the call ends in this way, the operator returns to the previously interrupted work. At this time, the control circuit 22 is the bell sound generation circuit.
Since the time when 17 is driven, that is, the outputs of the voice recognition operation detection circuit 15 and the voice recognition processing state detection circuit 16 are stored, for example, when a name is uttered to make a call, a bell sound is heard and a call is made. If it shifts to, it becomes possible to continue the processing of the voice recognition circuit 14 from the processing of the confirmation work of the next dial destination.

Here, in the handset call mode, a holding operation when an incoming call is received during registration or calling work will be described. The operation described above is almost the same as the hold operation while the operator is on standby, but in this case, since the handset 2 is in the lifted state, the operator must press the hook button switch 19 instead of lifting the handset. To do. Further description will be given below. For example, if the registration work is completed by entering the phone numbers of one more person, first, hold button 29
Press. In response to this, the automatic hook switch 21 is closed, the telephone is connected to the line, and then the hold voice is sent from the hold voice synthesizing circuit 27. When the registration work is completed, the operator pushes the hook button switch 19. In response to this, the control circuit 22 closes the communication path switch 25, so that the operator can talk using the handset 2 as it is. When the call is completed, the operator pushes the hook button switch 19 again. In response to this, the control circuit 22 opens the automatic hook switch 21 and the communication path switch 25, so that the telephone is separated from the line and enters the standby state.

Next, the calling operation in the handset call mode will be described. The operator first lifts the handset 2 when trying to make a call. The hook detection circuit 32 detects that the handset has been lifted and informs the control circuit 22.
In response to this, the control circuit 22 causes the voice recognition circuit 14 to perform the recognition operation. According to the signal from the voice recognition circuit 14, the operator speaks from the transmitter 4 of the pre-set handset 2 who is about to make a call, saying the name of the other party who registered the voice, for example, "Suzuki", and then from the transmitter 4 of the handset 2. Input to the voice recognition circuit 14. After that, the error operates similarly to the description of the embodiment with reference to FIG. That is, in response to the operator's confirmation, the control circuit 22 controls the automatic hook switch 21 to close it and connects the telephone to the line. After that, referring to the "00" code, obtains Mr. Suzuki's telephone number "100" stored in the telephone number memory, controls the dial signal generation circuit 12, and sends a "100" dial signal to the line. . The control circuit 22
Closes the speech path switch 25. When the call with the other party is completed, the operator puts on the handset 2. The hook detection circuit 32 detects this on-hook and informs the control circuit 22. In response to this, the control circuit 22 opens the automatic hook switch 21, disconnects the telephone from the line, and opens the speech path switch 25. When a call is made during this call work, as described above, when a voice is waiting for voice input for voice recognition, or during the voice capture, the generation of the bell sound is suspended, and when the voice input ends A bell sound is generated and the operator is notified that a call has been made.

Next, the registration work from the handset will be described. The operator pushes the registration switch 31 with the mode switch 20 in the handset call position. Accordingly
The control circuit 22 causes the voice recognition circuit 14 to perform a voice registration operation. The operator performs pairing with the name voice of the other party from the transmitter 4 and the telephone number of the other party from the dial push button 13 by the same work as the registration work of the embodiment relating to FIG.
If an incoming call is received during this registration work, as described above, the ringing of the bell will be suspended during the voice input waiting state for voice registration or during voice capture, and the bell Occurs. The call at this time is made by pressing the hook button switch 19 as described above. Then, when the call ends, registration work can be continued again. The holding operation can also be performed by pressing the holding button 29 as described above. When the registration work is completed, the operator pushes the registration switch 31 again. As a result, the control circuit 22 disables the voice recognition circuit 14 and returns to the standby state. In addition, the control circuit 22 is a communication path switch during registration work.
Open 25 and close when talking.

Control circuit in handset talk mode described above 22
7 and 10 are flowcharts showing the operation of the control circuit 22 (excluding the operation of the control circuit 22 in the registration mode in the mode).
8 and 10 are flowcharts showing the operation of the control circuit 22 in the registration mode in the handset call mode. Note that FIG. 7 is a main flowchart in the handset call mode, and FIG. 8 is a main flowchart in the registration mode in the mode.
FIG. 10 is a flowchart of the incoming call interruption process started in response to the output of the incoming call detection circuit 11 in these modes.

Next, the operation of the hands-free call mode will be described. The operator sets the mode switch 20 to the position for hands-free talking. In response to this, the control circuit 22 sets the switching circuit 7 to the hands-free side, that is, the voice switch type hands-free speech circuit 8
At the same time, the microphone switching circuit 28 is set to the microphone 10. With this, a call can be made with the microphone 10 and the speaker 9, and a voice recognition circuit for voice recognition or voice registration.
The microphone 10 serves as an input means to the 14.

The operation in the hand-free call mode is basically the same as that in the handset call mode, and thus detailed description thereof will be omitted. The difference from the handset call mode is that a speaker 9 and a microphone 10 are used instead of the receivers / speakers 3 and 4 of the handset 2, and the operation of lifting or placing the handset 2 is replaced by the operation of pressing the hook button switch 19. It's about. The call path switch 25 is closed by pressing the hook button switch 19 and opened by pressing it again. That is, the call path switch 25 is closed only during a call.

Control circuit in the hands-free call mode described above 22
9 and 10 are flowcharts showing the operation of the above (excluding the operation of the control circuit 22 in the registration mode in the mode).
Shown in the figure. The operation of the control circuit 22 in the registration mode in the hands-free call mode is the same as in FIGS.

As described above, according to the present embodiment, the function of holding a call,
The same effect as that of the embodiment shown in FIG. 1 can be obtained in a telephone having a function of automatically dialing by voice recognition from a handset.

In the description of FIG. 3, when the automatic dialing is performed from the handset transmitter 4, it is assumed that the voice recognition is performed using the registered voice registered from the handset transmitter 4. do not have to. For example, when performing automatic dialing from the handset, voice recognition may be performed using the registered voice registered from the microphone 10, and when performing automatic dialing from the microphone 10, the handset transmitter The voice recognition may be performed using the registered voice registered from No. 4. Also, the third
In the embodiment shown in the figure, since the speech path switch 25 is provided, as is apparent from the description with reference to FIG. 2, an echo cancellation type hands-free speech circuit may be used in place of the voice switching type hands-free passage circuit 8. it can.

FIG. 4 is a block diagram showing another example of a telephone set to which another embodiment of the present invention is applied. This phone is a car phone.

In FIG. 4, the same reference numerals as those in the first and the third denote the same or equivalent. Reference numeral 33 is a wireless antenna for exchanging signals with a base station (not shown), and 34 is a mobile device for transmitting and receiving control signals and voice signals for wireless telephone communication with the base station.

In a car phone, an incoming call signal (call signal),
All dial signals and connections by hook switches to the line are made by the wireless transmission / reception control signal channel of the control signal. In addition, the voice signal is assigned to an independent radio channel for receiving and transmitting.

The basic operation is the same as that shown in FIG. 1 and is therefore omitted, but the relationship between the mobile unit 34, the incoming call detection circuit 11 and the dial signal generation circuit 12 will be described. The paging signal is coded from the base station on the control signal channel and received by the mobile station 34. This signal is detected by the incoming call detection circuit 11, and the control circuit 22
Under the control of, the bell sound generation circuit 17 makes the sound audible and informs the operator. In addition, the dial signal of the dial signal generation circuit 12 is also coded and placed on the control signal channel,
It is sent from the mobile device 34 to the base station. The connection to the line is
For example, in the case of an incoming call in a handset call, a bell sound is generated under the control of the control circuit 22, and when the operator lifts the handset 2 in response to this, the hook detection circuit 32 outputs the bell sound. Detect lifting. In response to this, the control circuit 22 transmits a code for instructing the base station to connect the line to the mobile station 34 via the control signal channel. Then, a voice signal receiving / transmitting wireless channel is set between the base station and the mobile device 34, and a call becomes possible. In this way, in the car telephone, the control of the line network such as call signal, dial signal, connection to the line is performed by transmitting and receiving the radio signal through the control signal channel, and the voice signal is independent of the transmission and reception channel independent radio. It is no different from an ordinary telephone except that it is performed by the channel (thus, the sidetone circuit is not needed). Therefore, the incoming call operation, the outgoing call operation or the registration operation in this embodiment are the same as those in FIG.

〔The invention's effect〕

According to the present invention, the bell sound notifying the incoming call does not sound at least in the voice input waiting state or during the voice capturing, and the bell sound is mixed in the input voice for voice registration or the input voice for making a call. Since it does not occur, there is an effect that malfunction does not occur.

Further, according to the present invention, it becomes possible to accept an incoming call even during voice registration work or call origination work by voice recognition. Further, when a call is made, the call is terminated and the above work interrupted by the call is continued. It is also possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a telephone to which an embodiment of the present invention is applied, and FIGS. 2 to 4 are other examples of a telephone to which another embodiment of the present invention is applied. The block diagram, FIG. 5 and FIG. 6 are flowcharts showing the main operation of the control circuit of FIG. 1, FIG. 7, FIG.
FIG. 9 is a flow chart showing the main operation of the control circuit of FIG. 3, and FIG. 10 is a flow chart showing the interrupt processing in FIGS. 5 to 9. 1-1, 1-2 ... Line terminal, 2 ... Handset, 3 ...
… Handset handset, 4 …… Handset transmitter, 5 …… Hook switch, 7 …… Switching circuit, 8 …… Voice switch type hands-free communication circuit, 9 …… Speaker, 10 …… Microphone, 11 …… Incoming call detection circuit, 12 ... Dial signal generation circuit, 14 ... Voice recognition circuit, 17 ... Bell sound generation circuit, 18 ... Bell sound speaker, 22 ... Control circuit, 23 ...
… Echo loop switch, 24 …… Echo cancellation method Hand-free call circuit, 25 …… Call path switch, 27 …… Hold voice synthesis circuit, 28 …… Voice switching circuit, 29 …… Hold button, 40 …… Call signal path Means, 41 ... Control storage means, 42 ...
... input means, 43 ... incoming call notification means, 44 ... voice recognition circuit operation determination means.

Claims (7)

(57) [Claims] 1. Call signal path means (40), incoming call detection means (11), dial signal generation means (12), voice recognition means (14), control storage means (41), and input means. (42)
And a call notification means (43), wherein the call signal path means (40) is capable of converting the input voice into an electric signal and outputting it to the voice recognition means (14). The control storage means (41) has an operation discrimination means (44) of the voice recognition means (14), and when the voice input processing for making a call or voice registration processing for voice recognition is performed, When the call detection means (11) detects an incoming call and the operation determination means (44) determines that the operation of the voice recognition means (14) is in the voice input standby state or during the voice input process, the incoming call notification is given. A voice dial telephone which outputs a control signal for notifying an incoming call after the input processing is completed. 2. The control storage means (41) temporarily stores the discrimination output of the operation discrimination means (44) of the voice recognition means (14) when making an incoming call notification, and makes a call according to the incoming call notification. The voice dial telephone according to claim 1, wherein a new voice is input based on the temporary storage and the voice input process is continued after the end of. 3. The voice dial telephone according to claim 1, wherein the call signal path means (40) has a hands-free call means. 4. The voice dial telephone according to claim 3, wherein the call signal path means (40) is a hands-free call means of a voice switch system (8). 5. The call signal path means (40) has an echo loop opening / closing means (23), and the hand-free call means is an echo cancellation system (24), and the control storage means (41) is a call originator. For outputting the voice input processing for voice recognition or voice registration processing for voice recognition, the reverberation loop opening / closing means (23) is opened, and after the input processing is finished, a control signal for closing is output. A voice dial telephone set forth in the third section. 6. A voice recognition means (14) is a voice switching means (2).
The voice signal from the transmitter (4) of the handset communication means (2) or the microphone (10) of the hands-free communication means can be selectively input via 8). Voice dial telephone. 7. A call signal path means (40) has a holding voice synthesizing means (27), an input means (42) has a holding instruction means (29), and a control storage means (41) The voice dial telephone according to claim 1 or 2, wherein when the hold instruction means (29) is operated, the hold voice synthesizing means (27) outputs a control signal for transmitting a hold voice signal to the telephone line side. .