JP2007201658A - Intercom system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercom system that properly responds to a visitor in voice even when the visitor is unregistered, by analyzing voice of the visitor. <P>SOLUTION: The intercom system includes: a voice acquisition section for acquiring external voice from a voice signal; a storage section 31 for storing voice discrimination data 40 and a plurality of predetermined response voice data 50; a voice analysis section 32 for analyzing the voice signal and discriminating whether or not the voice signal is coincident with the discrimination data 50 stored in the storage section 31; and a control section 33 that controls an external voice output on the basis of one of the predetermined response voice data in the storage section according to the determination result of the voice analysis section. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an intercom system that appropriately responds by voice according to a visitor.

  In the intercom system, various ideas are taken from the viewpoint of security. For example, there is an intercom system in which a message for refusing correspondence is pre-registered with young male voice. Using this registered voice, even a small child with an answering machine can refuse to respond without worrying about the gender or age being specified by the visitor. it can. There is also an intercom system that captures images of visitors and records audio when they go out. By using this shooting and recording function, it is possible to confirm whether or not a suspicious person has visited when returning home.

  In the intercom system described in the patent document, the iris of the visitor is analyzed, and the visitor is identified based on the iris data registered in advance in the apparatus. An invention is described that automatically outputs voices registered in advance for responding to visitors, captures images of the visitors, records voices, and sounds notification sounds according to the identification results.

Japanese Patent Laid-Open No. 11-88516

  In the intercom system based on the iris identification described above, the visitor is identified by the image recognition of the iris. However, in order to perform iris image recognition, advanced calculation processing and a high-accuracy camera are required, resulting in a high-cost system. Moreover, since it is necessary to install it near the face of a person, it is possible that the hand of a person can be easily touched and the frequency of failure increases.

  Further, in the above invention, since the visitor performs a uniform response to the unregistered visitor with the same voice, it is not possible to cope as if the user is at home even when going out. It was. Moreover, since the voice which refuses a response is not used even if it distinguishes a visitor, there existed a problem that it cannot refuse automatically with respect to the visitor whom a user does not want to respond.

  An intercom system according to the present invention includes a sound acquisition unit that acquires external sound as a sound signal, a storage unit that stores the sound determination data, and a plurality of predetermined response sound data; Analyzing the audio signal and determining whether or not it matches the determination data stored in the storage unit, and according to the determination result of the audio analysis unit, one of the storage unit And a control unit that controls the output of the sound to the outside based on the data of the response sound determined in advance.

  According to the intercom system of the present invention, in accordance with the analysis result of the visitor's voice, the voice registered in advance for automatically responding to the visitor is output. Thereby, cost and failure frequency can be reduced. Further, since two determinations such as a keyword included in the visitor's voice and a voiceprint included in the visitor's voice are used for the determination of analysis, the visitor is accurately identified, for example, the response is rejected. Voice and voice to respond can be output.

<Embodiment 1>
FIG. 1 is a block diagram showing the configuration of the intercom system according to the present embodiment. The communication terminal according to the present embodiment includes a handset 1, a display operation terminal 2, and a control device 3. As a main operation, the handset 1 is a terminal for responding to a visitor, and is controlled by the control device 3. The user inputs settings and commands for controlling the control device 3 from the display operation terminal 2.

  A detailed configuration of the slave unit 1 is shown in FIG. The subunit | mobile_unit 1 acquires the button 11 for notifying that a visitor visited the user, the microphone 12 which acquires a visitor's audio | voice, and converts it into an audio | voice signal, converts an audio | voice signal into an audio | voice, and outputs an audio | voice. A speaker 13, a camera 14 that takes an image and converts the image into an image signal, a control unit 15 that controls an input signal, an audio signal, and an image signal of the button 11, and a signal between the control unit 15 and the control device 3 The communication part 16 which transmits / receives is provided. With the above configuration, handset 1 outputs a sound to the visitor based on the sound signal received from control device 3. On the other hand, the input of the visitor's button 11, sound, and image are converted into signals and transmitted to the control device 3. In this embodiment, the button 11 is input to inform the user that the visitor has visited, but the present invention is not limited to this, and the input is performed by means for notifying that the visitor has been visited from the outside (visit notification means). Others may be used as long as the signal can be acquired. For example, a touch panel may be used for similar inputs, and a microphone 12 may be used for voice inputs.

  Next, the detailed structure of the display operation terminal 2 is shown in FIG. The display operation terminal 2 includes an operation unit 21 for receiving commands and setting inputs from a user, a microphone 22 that acquires sound and converts it into a sound signal, and a speaker 23 that converts the sound signal into sound and outputs the sound. A display unit 24 that displays an image signal as an image, a control unit 25 that controls an input signal, an audio signal, and an image signal of the operation unit 21, and a communication unit that transmits and receives signals between the control unit 25 and the control device 3. 26. With the above configuration, the display operation terminal 2 outputs an image based on the sound and the image signal based on the sound signal received from the control device 3 to the user. On the other hand, the user's input to the operation unit 21 and voice are converted into signals and transmitted to the control device 3.

  Next, a detailed configuration of the control device 3 is shown in FIG. The control device 3 is a main part that is responsible for the operation of the intercom system of the present embodiment. The configuration includes a storage unit 31 that stores data on sound, images, and settings, and an analysis of the sound signal input from the slave unit 1 to the control device 3 and the determination of the sound signal stored in the storage unit 31. The voice analysis unit 32 that determines whether or not the data 40 coincides with each other, and various signals are received from the handset 1 or the display operation terminal 2, and based on the determination result of the voice analysis unit 32 and the various data in the storage unit 31. The slave unit 1, the display operation terminal 2, and a control unit 33 for controlling various signals.

  The storage unit 31 has various data from the determination data 40 used as the determination criterion of the voice analysis unit 32, the response voice data 50 which is voice data for responding to the visitor, and the speaker 23 of the display operation terminal 2. Notification sound data 60, which is data for outputting a notification sound of a simple pattern, question voice data 70 for asking a visitor a question, and visitor data 80 indicating the characteristics of the visitor are stored. .

  The determination data 40 includes keyword data 41 preset by the user in anticipation of being included in the voice of the visitor, and voiceprint data 42 extracted from the voice of the visitor who has already visited and registered to the user. Consists of. For example, the keyword data 41 is stored in a table as shown in FIG. 5, and the voiceprint data 42 is stored in a table as shown in FIG. The keywords in FIG. 5 and the voiceprints in FIG. 6 are stored in tables in which response voices and notification sounds are associated with each other. The keyword may be input from the operation unit 21, or may be extracted from the audio signal input from the microphone 22 by the audio analysis unit 32.

  The response voice data 50 includes response voice data 51 used for visitors who need to respond and rejection voice data 52 used for visitors who do not need to respond. For example, the corresponding voice data 51 is stored in a table as shown in FIG. 7, and the reject voice data 52 is stored in a table as shown in FIG. Corresponding voice consists of contents that inform visitors of absence, etc., and rejected voice consists of contents that refuse to respond without notifying visitors of absence.

  The notification sound data 60 stores various sound patterns as shown in the table of FIG. Corresponding notification sound data 61 and rejection notification sound data 62 are selected and distinguished by the user.

  The question voice data 70 is voice data composed of contents for asking a visitor. The question voice is, for example, a voice with the content “Yes, who is it?” Or “What is your business?”

  The visitor data 80 includes the visitor voice data 81, the visitor image data 82, the visitor voice voice data 83 in which no voiceprint is registered, and a certain period for each visitor. Data 84 of the number of visits to.

  The operation of the operation control device 3 will be described with reference to the flowchart of FIG.

  An input signal is transmitted to the control unit 33 by an operation such as a visitor pressing the button 11 of the handset 1 (ST-11). The control unit 33 outputs a sound from the speaker 13 of the handset 1 according to the question sound data 70 stored in the storage unit 31 (ST-12).

  The question voice is a voice with a content of “Yes, who is it?” Or “What is your business?” This voice is used to urge the visitor to speak.

  The visitor answers the question voice by voice (ST-13). The microphone 12 of the handset 1 acquires the voice of the visitor and converts it into a voice signal.

  The audio signal is transmitted to the audio analysis unit 32, analyzed, and it is determined whether or not it matches the determination data 40 in the storage unit 31 (ST-14). The determination data 40 has two data, ie, keyword data 41 and voiceprint data 42. In this embodiment, the determination data 40 is determined using only one of the two determination data. A method using both determinations will be described in the second embodiment.

  When the keyword data 41 is used as the determination data 40, the voice analysis unit 32 analyzes the voice signal and determines whether or not the keyword (FIG. 5) stored in the storage unit 31 is included. Determine. On the other hand, when the voiceprint data 42 is used as the determination data 40, the voice analysis unit 32 analyzes the voice signal and has the voiceprint (FIG. 6) stored in the storage unit 31. Determine whether or not. In any determination, these determination results are transmitted to the control unit 33.

  The control unit 33 selects one response voice data 50 from the plurality of response voice data 50 stored in the storage unit 31 based on the determination result of ST-14. For example, if it is determined that the visitor's voice includes the keyword “shinbu”, “reject voice NO.1” is selected as one response voice data 50 based on FIG. Then, based on the data 50 of one response voice, the control unit 33 controls the handset 1 to output the sound from the speaker 13 of the handset 1 (ST-15). When “Reject Voice NO.1” is selected as the response voice, the voice “It is fine” is output from the speaker 13 of the handset 1 based on FIG.

  The response voice is composed of the corresponding voice as shown in FIG. 7 and the rejected voice as shown in FIG. 8, but the classification of the corresponding voice and the rejected voice is based on whether the determination in the voice analysis unit 32 is the same or not. Absent. This is because some of the visitors that are matched by the determination of the voice analysis unit 32 may be visitors who want to respond or may not want to respond. Therefore, as shown in FIG. 5 and FIG. 6, the response voice and the reject voice are mixed in the response voice used when the determination results of the voice analysis unit 32 match. Eventually, the corresponding voice and the reject voice are set by the user assuming who is the visitor determined to be the same by the voice analysis unit 32 and who is the person. Therefore, if the voice analysis unit 32 determines that there is a mismatch, it cannot be assumed who the visitor is. In this case, either the corresponding voice or the reject voice set by the user's judgment is output from the speaker 13 of the handset 1 (ST-16).

  As described above, by determining a visitor's voice based on a keyword or a voiceprint, a visitor can be identified and a voice response can be automatically made according to the user's settings. Accordingly, the microphone 12 can be used without using a high-precision camera for visitor identification as in the conventional method, and the system cost can be reduced. In addition, even when the user is out, it is possible to give an impression that the user is at home and responding, so a crime prevention effect that reduces theft while out can be expected.

  The question voice, the corresponding voice, and the reject voice may be fixed voices stored in the apparatus from the beginning. However, user voices that are input in advance from the microphone 22 of the display operation terminal 2 and stored as data in the storage unit 31 are used. It may be used. If it does in this way, a voice content can be changed freely using a user's voice. Thereby, since the impression that the user is staying at home and responding can be given, the crime prevention effect which reduces theft while going out can be further expected.

  With respect to this crime prevention effect, if the rejection voice is used at random and is handled with a voice having a different content each time, it is possible to give an impression that the person is at home. The above operation is always performed regardless of whether the user is at home or going out.

  Also, the voice of the user recorded as the question voice, the corresponding voice, and the reject voice can be converted. This can be realized simply by adding this function to the signal control function of the control unit 33. This voice quality conversion has a function for setting gender, age, etc. as in the table of rejected voice data in FIG. 8, for example. In this way, even if the user is a young woman living alone, it is possible to strongly refuse to respond with “Don't come again!” In the voice of a thick man.

  Next, the notification sound data 60 will be described. As the notification sound, various sound patterns are stored as in the table of FIG. From the notification sound table, the user responds to the corresponding notification sound data 61 that is the data of the notification sound pattern that sounds indoors when a visitor who needs to respond visits. Rejection notification sound data 62, which is the notification sound pattern data that rings indoors, is selected. Then, at the same timing when the corresponding sound is output, the corresponding notification sound sounds from the speaker 23 of the indoor display operation terminal 2 and at the same timing as when the rejection sound is output, the speaker 23 of the indoor display operation terminal 2. Make a refusal notification sound. In this way, when the user is at home, the user can know what visitors have visited before using the intercom. These notification sounds do not always have to be sounded, and a switch for switching may be provided in the apparatus so that the notification sound does not sound when the user switches the switch. In the present embodiment, the display operation terminal 2 notifies the user of the determination result of the voice analysis unit 32 with a sound pattern called a notification sound. However, the present invention is not limited to this, and the determination result of the voice analysis unit 32 is displayed. Other devices may be used as long as they have means (determination notification means) for notifying the user. For example, the user may be notified by turning on the light, blinking the light, or displaying on the screen.

  Next, the visitor data 80 will be described. The visitor data 80 is obtained by acquiring the voice and image of the visitor from the handset 1 when the user goes out, and storing the visitor data 80 in the storage unit 31 as data representing the characteristics of the visitor. Visitor voice data 81, visitor image data 82, visitor voice voice print data 83 not registered in the determination data 40, and visitors during a certain period of time, such as while going out The number of visits is stored for each visitor's voiceprint.

  When a visitor who requires handling visits, that is, when the corresponding voice is output, the voice of the visitor is acquired from the microphone 12 of the handset 1. Then, the voice is converted into a voice signal and stored as voice data 81 of the visitor in the storage unit 31 via the control unit 33. At the same time, an image of a visitor is acquired from the camera 14 of the child device 1. Then, the image is converted into an image signal and stored as image data 82 of the visitor image in the storage unit 31 via the control unit 33. By storing the visitor's voice data 81 and the visitor's image data 82, the user can confirm the state of the visitor who needs to respond when he is out, the purpose of visit, and the like after returning home.

  When it is determined that the voice analysis unit 32 has not registered the voiceprint, the voiceprint data of the voice is stored in the storage unit 31 as voiceprint data 83 of the visitor's voice. At the same time, the visitor's voice acquired from the microphone 12 of the slave unit 1 is used as the visitor's voice data 81, and the visitor image acquired from the camera 14 of the slave unit 1 is used as the visitor's image data 82. And stored in the storage unit 31. The user confirms the voice and image of the visitor stored in this manner, and registers the voice print data 83 of the visitor as the voice print data 42 for determination as necessary. Thus, by accumulating the determination data 40, the determination of ST-14 can be made more accurate.

  The number-of-visits data 84 is data composed of numbers corresponding to each voiceprint data. Each time the voice analysis by the voice analysis unit 32 determines that they match, the number is integrated by the control unit 33 for a certain period. Thus, the user can know the number of visits for each visitor the user visits when going out. The user can use this number of times as a guideline as to whether or not the visitor is a suspicious person and whether or not the visitor's visit purpose is urgent.

<Embodiment 2>
The configuration of the intercom system according to the present embodiment is the same as that of the first embodiment (FIG. 4). In the first embodiment, the voice of the visitor is determined using only one of the determination based on the keyword or the voiceprint. Then, the user assumes who the determined visitor is, and the like, and the corresponding voice and rejection voice to be output to the visitor are set. Whether or not the corresponding voice and rejected voice can be properly used depends on how accurately the visitor can be specified by the above determination. Furthermore, when it is determined by the voice analysis unit 32 that they do not match, it is incomplete that it is left to the user to decide whether to use the corresponding voice or the rejected voice. Therefore, in this embodiment, both the determination by the keyword and the determination by the voiceprint are used. This is because there is a difference between advantages and disadvantages between the determination based on the keywords handled in the same manner as in the first embodiment and the determination based on the voiceprint. The advantages and disadvantages are as follows.

  As for the method of judging by keyword, it is possible to identify visitors to some extent if the keyword is included in the voice even for those who have never visited, and the more the number of times the keyword is judged, the more visitors are identified What can be done is an advantage. However, there are disadvantages in that the voice of the visitor may happen to include a keyword, which is influenced by chance, and in order to accurately identify the visitor, the visitor must answer repeatedly. It is.

  The method of determining by voiceprint is advantageous in that it is possible to specify exactly who the registered visitor is, for example, by performing determination only once. This is because human voice is almost individual-specific. In this respect, it is superior to the method of identifying by keyword. However, there is a disadvantage in that it has the same problem as in the prior art that a visitor cannot be specified even if the number of times of voiceprint determination is increased.

  For these reasons, instead of using only one of determination by keyword and determination by voiceprint, both determinations are used as shown in the flowchart of FIG. 11 in order to eliminate the disadvantages while taking advantage of the respective advantages.

  An input signal is transmitted to the control unit 33 by an operation such as a visitor pressing the button 11 of the handset 1 (ST-21). The control unit 33 outputs a sound from the speaker 13 of the handset 1 according to the question sound data 70 stored in the storage unit 31 (ST-22).

  The question voice is a voice with a content of “Yes, who is it?” Or “What is your business?” This voice is used to urge the visitor to speak.

  Then, the visitor answers the question voice by voice (ST-23). The microphone 12 of the handset 1 acquires the voice of the visitor and converts it into a voice signal.

  The voice signal is transmitted to the voice analysis unit 32 and analyzed to determine whether or not it matches the keyword data 41 (ST-24).

  And the control part 33 controls the subunit | mobile_unit 1 so that the audio | voice according to the data 50 of the response voice selected by the determination by a keyword may be output with the speaker 13 of the subunit | mobile_unit 1 (ST-25).

  The voice signal determined not to match by the determination by the keyword is further analyzed by the voice analysis unit 32 to determine whether or not it matches the voiceprint data 42 (ST-26).

  And the control part 33 controls the subunit | mobile_unit 1 so that the audio | voice according to the data 50 of the response voice selected by the determination by a voiceprint may be output with the speaker 13 of the subunit | mobile_unit 1 (ST-27).

  In this way, even if the visitor could not be identified because the keyword was not included in the voice, if the visitor was a visitor and the voiceprint was registered for the user, the visitor was selected. Can be identified appropriately.

  On the other hand, if there is no matching data as determined by the voiceprint, either the corresponding voice or the rejected voice set by the user's judgment is output from the speaker 13 of the handset 1 (ST-28). However, since the determination by the keyword is performed first, it is possible to reduce the situation where the determination does not match that of the first embodiment.

  From the above, in addition to improving the accuracy of identifying visitors, the number of visitors that do not match in the determination can be reduced as compared with the prior art. Although not shown, assuming that the keywords coincide by chance, voice determination based on a voiceprint may be added as necessary after ST-25.

  Further, as another combination of determinations, a flowchart as shown in FIG. 12 is also conceivable.

  An input signal is transmitted to the control unit 33 by an operation such as a visitor pressing the button 11 of the handset 1 (ST-31). The control unit 33 outputs a sound from the speaker 13 of the handset 1 according to the question sound data 70 stored in the storage unit 31 (ST-32).

  The question voice is a voice with a content of “Yes, who is it?” Or “What is your business?” This voice is used to urge the visitor to speak.

  Then, the visitor answers the question voice by voice (ST-33). The microphone 12 of the handset 1 acquires the voice of the visitor and converts it into a voice signal.

  The voice signal is transmitted to the voice analysis unit 32, analyzed, and it is determined whether or not it matches the voiceprint data 42 (ST-34).

  And the control part 33 controls the subunit | mobile_unit 1 so that the audio | voice according to the response audio | voice data 50 selected by the determination by a voiceprint may be output with the speaker 13 of the subunit | mobile_unit 1 (ST-35).

  The voice signal determined not to match in the determination by the voiceprint is further analyzed by the voice analysis unit 32 to determine whether or not it matches the keyword data 41 (ST-36).

  And the control part 33 controls the subunit | mobile_unit 1 so that the audio | voice according to the data 50 of the response voice selected by the determination by a keyword may be output with the speaker 13 of the subunit | mobile_unit 1 (ST-37).

  For the voice signal determined not to match yet, a question voice having a question content different from the question voice performed earlier is output (ST-38), and the visitors are answered by voice (ST-39). . Then, by determining again by keyword, it is determined whether or not it matches the keyword data 41. By repeating this, it is possible to accurately identify all visitors and use an appropriate response voice.

  According to this combination of determinations, since the determination of the voice print is used first, it is possible to identify the visitor who has once visited and registered the voice voice print by one determination, and to output the corresponding voice immediately. . Furthermore, even if the visitor is determined not to match in the voiceprint determination, the visitor can be specified by performing the keyword determination. If the keywords do not match, a question voice is output, the visitor is answered, and the keyword is determined again. By performing this keyword determination several times, a visitor can be specified more accurately.

  From the above, in addition to improving the accuracy of identifying visitors, the number of visitors that do not match in the determination can be greatly reduced as compared with the prior art.

  As described above, by using a combination of determination by keyword and determination by voiceprint, the intercom system can accurately specify whether or not the visitor does not need to report absence. This means that the proper use of response voice and rejection voice can be used accurately.

  As a result, it is possible to reduce the use of the corresponding voice by mistake for a visitor who does not need to report absence and the use of the rejection voice by mistake for a visitor who needs to report absence.

1 is a block diagram of an intercom system according to Embodiment 1. FIG. 3 is a block diagram of a child device according to Embodiment 1. FIG. 3 is a block diagram of a display operation terminal according to Embodiment 1. FIG. 2 is a block diagram of a control device according to Embodiment 1. FIG. It is a figure showing the correspondence of the intercom system which concerns on Embodiment 1. FIG. It is a figure showing the correspondence of the intercom system which concerns on Embodiment 1. FIG. It is a figure showing the correspondence of the intercom system which concerns on Embodiment 1. FIG. It is a figure showing the correspondence of the intercom system which concerns on Embodiment 1. FIG. It is a figure showing the correspondence of the intercom system which concerns on Embodiment 1. FIG. 3 is a flowchart showing an operation of the intercom system according to Embodiment 1. 6 is a flowchart showing an operation of the intercom system according to the second embodiment. 6 is a flowchart showing an operation of the intercom system according to the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Child machine 2 Display operation terminal 3 Control apparatus 11 Button 12 Microphone 13 Speaker 14 Camera 15 Control part 16 Communication part 21 Operation part 22 Microphone 23 Speaker 24 Display part 25 Control part 26 Communication part 31 Memory | storage part 32 Audio | voice analysis part 33 Control part 40 Judgment Data 41 Keyword Data 42 Voiceprint Data 50 Response Voice Data 51 Corresponding Voice Data 52 Rejected Voice Data 60 Notification Sound Data 61 Corresponding Notification Sound Data 62 Rejection Notification Sound Data 70 Question Voice Data 80 Visitor data 81 Voice data 82 Image data 83 Voiceprint data 84 Number of visits data

Claims (13)

An audio acquisition unit for acquiring external audio as an audio signal;
A storage unit for storing data for determining the voice and a plurality of predetermined response voice data;
A voice analysis unit that analyzes the voice signal and determines whether or not the data matches the determination data stored in the storage unit;
In accordance with the determination result of the voice analysis unit, a control unit that controls voice output to the outside based on the data of the one predetermined response voice in the storage unit,
Intercom system equipped with. The determination data is
Including keyword data contained in the voice,
The intercom system according to claim 1. The determination data is
Including voiceprint data of the voice,
The intercom system according to claim 1. The determination data is
Including keyword data included in the voice and voiceprint data included in the voice;
The intercom system according to claim 1. Further equipped with a visit notification means,
The storage unit
Further storing data of a first question voice predetermined to urge a visitor to speak,
The controller is
According to the operation of the visit notification means, based on the predetermined first question voice data in the storage unit, to control the voice output to the outside.
The intercom system according to any one of claims 1 to 4. The response voice data is:
Including at least one of rejected voice data used for visitors who do not need to handle and supported voice data used for visitors who need to handle
The intercom system according to any one of claims 1 to 5. The response voice data is:
Including predetermined second question voice data to prompt the visitor to speak,
The intercom system according to claim 6. At least one of the question voice data and the response voice data is:
Including user voice data,
The intercom system according to claim 6 or 7. The user's voice data is
Including data converted from the voice of the user,
The intercom system according to claim 8. A determination notification means for notifying a user of the determination result of the voice analysis unit;
The intercom system according to any one of claims 6 to 9. The storage unit stores data of the number of times visited in a predetermined period for each of the voiceprint data, and the control unit accumulates the number of times when the data matches the voiceprint data,
The intercom system according to claim 3 or 4.   The image acquisition unit further acquires an external image as an image signal, and when the voice analysis unit determines that the voice print data is inconsistent by the voice analysis unit, the voice print data and the voice acquisition unit The interphone system according to claim 3 or 4, wherein the acquired audio signal data and the image signal data acquired from the image acquisition unit are stored in the storage unit. The image acquisition unit further acquires an external image as an image signal, and the control unit controls the audio output based on the corresponding audio data, and the audio signal data acquired from the audio acquisition unit And storing the image signal data acquired from the image acquisition unit in the storage unit,
The intercom system according to claim 6.

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