JP2014112963A - Intercom system and intercom master unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve use convenience related to communication with a door phone sub-unit.SOLUTION: In an intercom system, an intercom master unit 1 includes radio interface means 15 to a mobile telephone terminal 3 having a radio communication unit 33 for performing radio communication without the intervention of a mobile telephone network of a mobile telephone service provider, or to an extension intercom master unit 4 having a radio communication unit 44 for performing radio communication without the intervention of a mobile telephone network, to interface between the intercom master unit 1 and the mobile telephone terminal 3 or between the intercom master unit 1 and the extension intercom master unit 4. The intercom master unit 1 can receive calling from the mobile telephone terminal 3 or the extension intercom master unit 4 through the radio interface means 15.

Description

  The present invention relates to an interphone system and an interphone master unit.

  Conventionally, a door phone slave installed outdoors in a dwelling unit and an interphone master unit installed indoors in a dwelling unit and connected to the door phone slave via a signal line are provided, and an audio signal is transmitted via the signal line. There are various interphone systems that can perform interphone communication between an interphone master and a door phone slave by giving and receiving. Here, not only the interphone master unit but also a general telephone connected to a subscriber telephone line has already been provided with an interphone system that can make a call with a door phone slave unit (see Patent Document 1).

  In addition, general telephones equipped with wireless slaves are now widely used, and wireless slaves capable of both calling with a doorphone slave via an intercom master and external calls via a telephone. Interphone systems equipped with are also provided.

JP-A-5-3579

  By the way, in recent years, the number of mobile phone contracts has overtaken the number of subscriber telephone lines, and the number of households that make an external phone call from a home without using a subscriber telephone line is increasing. That is, in a home that does not have a contract for a subscriber telephone line, it is not easy to use a general telephone or a wireless handset to make a call with a door phone handset.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an intercom system with improved usability regarding a call with a door phone cordless handset.

  An intercom system according to the present invention includes a doorphone slave installed outdoors in a dwelling unit, and an interphone master set installed indoors in the dwelling unit and connected to the doorphone slave via a signal line, In an intercom system capable of intercom calls between the interphone master unit and the door phone slave unit by sending and receiving audio signals or video signals via a line, the interphone master unit is a mobile phone network of a mobile phone operator For the mobile phone terminal having a wireless communication unit that performs wireless communication without going through, or the extension interphone base unit having the wireless communication unit that performs wireless communication without going through the mobile phone network, the interphone base unit and the mobile phone terminal or Wireless interface means for interfacing the interphone master unit and the extension interphone master unit For example, the interphone parent device, the over the air interface means and being able to receive a call from the mobile phone terminal or the extension interphone parent device.

  The intercom system according to the present invention includes a door phone slave installed outdoors in a dwelling unit of an apartment house, and an interphone master set installed indoors in the residence and connected to the door phone slave via a signal line. And a lobby intercom apparatus that is installed at a common entrance of the apartment house and is connected to the interphone base unit via a control line and a communication line, respectively, wherein the interphone base unit is a mobile phone operator For the mobile phone terminal having a wireless communication unit that wirelessly communicates without going through the mobile phone network or the expansion interphone parent device having the wireless communication unit that wirelessly communicates without going through the mobile phone network, the interphone master unit and the Wireless interface for interfacing a mobile phone terminal or the interphone master unit with the extension interphone master unit Comprising a face means, said interphone parent device, the over the air interface means and being able to receive a call from the mobile phone terminal or the extension interphone parent device.

  In the intercom system according to the present invention, it is preferable that the interphone base unit can perform an extension call with the mobile phone terminal or the additional intercom base unit via the wireless interface means.

  In addition, the interphone master device according to the present invention is installed indoors in a dwelling unit, and is capable of interphone communication by exchanging audio signals or video signals via a signal line with a doorphone sub unit installed outside the dwelling unit. An interphone base unit, a mobile phone terminal having a wireless communication unit that wirelessly communicates without going through a mobile phone network of a mobile phone carrier, or an extension interphone parent having a wireless communication unit that makes wireless communication without going through the mobile phone network Wireless interface means for interfacing the interphone base unit and the mobile phone terminal or the interphone base unit and the extension interphone base unit to the mobile phone, and the mobile phone terminal or the extension via the wireless interface means It is characterized by being able to receive a call from the intercom master unit.

  The intercom system of the present invention improves usability because it can communicate with the door phone slave unit using not only the interphone master unit but also the mobile phone terminal even if the subscriber telephone line is not contracted. In addition, since it is possible to make a call with a mobile phone terminal without going through the mobile phone network of the mobile phone operator, it is possible to greatly reduce the cost required for the call. There is an effect that it is possible to improve the usability regarding the call with the device.

1 is a system configuration diagram showing Embodiment 1 of the present invention. Sequence diagram for explaining the operation related to the call between the door phone slave unit and the mobile phone terminal in the same as above Sequence diagram for explaining the operations related to extension calls between the mobile phone terminal and the extension intercom base unit System configuration diagram showing Embodiment 2 of the present invention System configuration diagram showing Embodiment 3 of the present invention

(Embodiment 1)
In this embodiment, the technical idea of the present invention is applied to an intercom system for a detached house. As shown in FIG. 1, the intercom system 2 installed outside the dwelling unit (entrance) and the indoor unit of the dwelling unit. An interphone master unit (hereinafter abbreviated as “interphone master unit”) 1 that is installed and connected to the door phone slave unit 2 through the signal line Ls is provided. In addition, the intercom base unit 1 in the present embodiment can wirelessly communicate with the mobile phone terminal 3 via a wireless interface unit described later.

The mobile phone terminal 3 is, for example, a W-CDMA (Wideband Code Divisi).
on-Multiple Access) type third-generation mobile phone terminal, which includes a microphone 30 and a speaker 31, a first wireless unit 32 for wireless communication with a base station of a mobile phone carrier, and a wireless LAN standard (for example, The second wireless unit 33 for performing wireless communication conforming to IEEE 802.11 standards), the monitor unit 34 having a display device such as a liquid crystal display, and operation buttons such as a numeric keypad are provided to accept operation inputs. An operation input receiving unit 35 and a terminal control unit 36 that controls each unit with a CPU as a main component are provided. The first wireless unit 32 has a mobile phone function for making a call via the mobile phone network of the mobile phone operator, and the second wireless unit 33 has a wireless communication function (wireless LAN function) for wireless communication without going through the mobile phone network. doing. However, since the cellular phone function of the cellular phone terminal 3 and the wireless LAN function compliant with the IEEE 802.11 standards are well known in the art, a detailed description thereof will be omitted.

  The intercom unit 2 includes a microphone 20 and a speaker 21, a call processing unit 22 that performs a two-line / four-line conversion process of an audio signal and a call signal transmission process associated with an operation of a call button (not shown), and a visitor. The image pickup unit 23 that picks up an image and the audio signal that is modulated from the video signal output from the image pickup unit 23 and frequency-division multiplexed with the audio signal output from the call processing unit 22 and transmitted from the intercom base unit 1 via the signal line Ls And a demultiplexing processing unit 24 for separating signals. However, since the configuration of the door phone slave unit 2 is well known in the art, a detailed description thereof will be omitted.

The intercom base unit 1 separates the video signal and the audio signal that are frequency-division-multiplexed and transmitted from the intercom unit 2 through the signal line Ls and transmits the audio signal to the intercom unit 2 through the signal line Ls. A demultiplexing processing unit 10 and a display device such as a liquid crystal display or a CRT are included. Furthermore, a sound input / output having a monitor unit 11 that demodulates and displays the video signal separated by the demultiplexing processing unit 10, a microphone and a speaker, a microphone amplifier that amplifies the output of the microphone, and a speaker amplifier that amplifies the input to the speaker. Unit 12, an operation input receiving unit 13 that includes an operation button such as a response button (not shown) and receives an operation input, and an interphone master unit control unit 14 that controls each unit with a CPU as a main component. . Furthermore, a radio interface (I / F) unit 15 that interfaces the interphone base unit 1 (interphone base unit control unit 14) and the radio communication function of the mobile phone terminal 3 is provided. Note that the wireless interface (I / F) unit 15 performs wireless communication conforming to standards related to a wireless LAN (for example, IEEE 802.11 standards) in the same manner as the second wireless unit 33 of the mobile phone terminal 3. .

  In addition, the present embodiment includes a communication device (hereinafter referred to as “additional interphone master”) 4 having a function of performing wireless communication with the interphone master 1 similarly to the mobile phone terminal 3. The extension interphone base unit 4 includes a monitor unit 40 having a display device such as a liquid crystal display or a CRT, a microphone and a speaker, a microphone amplifier that amplifies the output of the microphone, and a speaker input that amplifies the input to the speaker. An output unit 41 and an operation input receiving unit 42 that includes an operation button such as a response button (not shown) and receives an operation input. Furthermore, an extension interphone master unit control unit 43 that controls each unit with the CPU as a main component, and a wireless communication unit 44 for performing wireless communication in conformity with a wireless LAN standard (for example, IEEE 802.11 standards). It has. Here, a unique IP address (private address) is assigned to each of the interphone base unit 1, the mobile phone terminal 3, and the extension intercom base unit 4, and can be recognized by the IP address. However, the details of wireless communication compliant with standards (for example, IEEE 802.11 standards) are well-known and will not be described. If the voice input / output unit 12 of the interphone master unit 1 and the voice input / output unit 41 of the extension interphone master unit 4 each include at least one of an echo canceller and a voice switch, the interphone master unit 1 and the extension interphone master A voice call (hands-free call) can be made on the machine 4.

  Next, the operation of this embodiment will be described. First, the basic operation of the intercom system for making a call between the doorphone slave unit 2 and the interphone master unit 1 will be briefly described.

  When a visitor presses a call button (not shown) of the doorphone slave unit 2, a call signal is transmitted to the intercom base unit 1 via the signal line Ls. The ringing tone is emitted from the speaker of the input / output unit 12 and power is supplied via the signal line Ls to activate the imaging unit 23 of the door phone slave unit 2 and monitor the video (moving image) captured by the imaging unit 23 Display on the unit 11. Then, if the householder who has confirmed the visitor by the image displayed on the monitor unit 11 presses a response button (not shown) provided on the operation input receiving unit 13 of the interphone base unit 1, the interphone base unit control unit 14, a communication path via the signal line Ls is formed between the intercom base unit 2 and the intercom base unit 1 and the intercom base unit 2. At the same time, it is possible to display an image transmitted from the doorphone slave unit 2 on the monitor unit 11 of the interphone master unit 1 during a call. However, the telephone call and video transmission between the intercom base unit 1 and the door phone slave unit 2 are ended when a predetermined time elapses after the response button is pressed or when the response button is pressed again.

  Next, an operation related to a call between the doorphone slave unit 2 and the mobile phone terminal 3 which is the gist of the present invention will be described with reference to the sequence diagram of FIG.

  When the call button is pressed and a call signal is transmitted from the doorphone slave unit 2 via the signal line Ls, the interphone master unit control unit 14 of the interphone master unit 1 receives a mobile phone from the radio interface (I / F) unit 15. A call notification is sent to the terminal 3 and a ringing tone is generated from the speaker of the voice input / output unit 12. In the mobile phone terminal 3, when the second wireless unit 33 receives the call notification transmitted from the intercom base unit 1, the terminal control unit 36 causes the speaker 31 to ring. Then, if the householder who heard the ringing tone presses a response button (not shown) provided in the operation input reception unit 35 of the mobile phone terminal 3, the terminal control unit 36 makes the intercom master unit from the second radio unit 33. 1 is notified of the response. In the intercom base unit 1, when the response notification transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 15, the intercom base unit control unit 14 passes the signal line Ls between the interphone base unit 2 and the interphone base unit 2. The communication interface is formed and a call permission notification is sent from the wireless interface (I / F) unit 15 to the mobile phone terminal 3, and the ringing sound generated from the speaker of the voice input / output unit 12 is stopped. In the mobile phone terminal 3, when the second wireless unit 33 receives the call permission notification transmitted from the intercom base unit 1, the terminal control unit 36 stops the ringing sound that is ringing from the speaker 31. Then, the video and audio (speech voice) transmitted from the doorphone slave unit 2 to the interphone master unit 1 are converted into video data and audio data by the interphone master unit control unit 14, respectively, and the radio interface (I / F) unit 15. To the mobile phone terminal 3. In the mobile phone terminal 3, when the video data and audio data transmitted from the intercom base unit 1 are received by the second radio unit 33, the terminal control unit 36 reconstructs the original video from the video data and displays it on the monitor unit 34. At the same time, the voice data is converted into an analog voice signal and a voice (received voice) is generated from the speaker 31. In addition, voice (speech voice) input from the microphone 30 is converted into voice data by the terminal control unit 36 and transmitted from the second radio unit 33 to the interphone master unit 1. In the interphone base unit 1, when the voice data transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 15, the interphone base unit control unit 14 converts the voice data into an analog voice signal and demultiplexes the voice data. The data is transmitted from the processing unit 10 to the doorphone slave unit 2, and a voice (received voice) is sounded from the speaker 21 of the doorphone slave unit 2, and a call can be made between the doorphone slave unit 2 and the mobile phone terminal 3. However, for a call and video transmission between the mobile phone terminal 3 and the door phone slave unit 2 via the interphone base unit 1, a predetermined time elapses after the response button is pressed on the mobile phone terminal 3, or a response is made again. The process ends when the button is pressed.

  When the extension interphone base unit 4 is installed, when the call notification transmitted from the interphone base unit 1 is received by the wireless communication unit 44 of the extension interphone base unit 4, the extension interphone base unit control unit 43 receives the voice input / output unit. A ringing tone is generated from 41 speakers. Then, if the householder who heard the ring tone presses a response button (not shown) provided in the operation input receiving unit 42 of the extension interphone master unit 4, the extension interphone master unit control unit 43 receives the radio communication unit 44. A response notification is sent to the intercom base unit 1. In the intercom base unit 1, when the response notification transmitted from the extension intercom base unit 4 is received by the wireless interface (I / F) unit 15, the intercom base unit control unit 14 connects the signal line Ls between the intercom base unit 2 and the interphone base unit 2. The communication interface is formed, and the radio interface (I / F) unit 15 notifies the extension intercom base unit 4 of the call permission, and further stops the ringing sound that is ringing from the speaker of the voice input / output unit 12 . In the extension interphone base unit 4, when the wireless communication unit 44 receives the call permission notification transmitted from the interphone base unit 1, the extension interphone base unit control unit 43 stops the ringing sound that is ringing from the speaker of the voice input / output unit 41. To do. Then, the video and audio (speech voice) transmitted from the intercom base unit 2 to the interphone base unit 1 are converted into video data and audio data by the interphone base unit control unit 14, respectively, and the radio interface (I / F) unit 15. Is transmitted to the extension intercom base unit 4. In the extension base unit 4, when the video data and audio data transmitted from the interphone base unit 1 are received by the wireless communication unit 44, the extension interphone base unit control unit 43 reconstructs the original video from the video data and monitors the monitor unit 40. The voice data is converted into an analog voice signal and voice (received voice) is generated from the speaker of the voice input / output unit 41. In addition, voice (speech voice) input from the microphone of the voice input / output unit 41 is converted into voice data by the extension interphone base unit control unit 43 and transmitted from the wireless communication unit 44 to the interphone base unit 1. In the interphone base unit 1, when the voice data transmitted from the extension interphone base unit 4 is received by the wireless interface (I / F) unit 15, the interphone base unit control unit 14 converts the voice data into an analog voice signal and multiplexes the analog voice signal. The separation processing unit 10 transmits the signal to the door phone slave unit 2, and a voice (received voice) is generated from the speaker 21 of the door phone slave unit 2, so that a call can be made between the door phone slave unit 2 and the additional intercom master unit 4.

  As described above, according to the present embodiment, even if the subscriber telephone line is not contracted, the user can improve the usability because the mobile phone terminal 3 as well as the interphone master unit 1 can be used to make a call. In addition, since the mobile phone terminal 3 can make a call with the door phone slave unit 2 without going through the mobile phone network of the mobile phone operator, the cost required for the call can be greatly reduced. In addition to the voice, the video captured by the imaging unit 23 of the door phone slave unit 2 is also relayed from the intercom base unit 1 to the mobile phone terminal 3, and the video received from the door phone slave unit 2 to the monitor unit 34 of the mobile phone terminal 3. Since the mobile phone terminal 3 can be used, a call can be made while viewing the video of the visitor. Further, the extension interphone base unit 4 can also make a call with the door phone slave unit 2 in the same manner as the mobile phone terminal 3, and the screen size of the monitor unit 40 is larger than the mobile phone terminal 3, so that the video is easy to see and the voice call ( There is an advantage that a hands-free call) can be performed. In addition, since the radio interface (I / F) unit 15 is built in the intercom base unit 1, a space for installing the radio interface means is unnecessary.

  By the way, in the present embodiment, extension calls between the mobile phone terminal 3 and the extension interphone master unit 4 and the interphone master unit 1 and extension calls between the mobile phone terminal 3 and the extension interphone master unit 4 are also possible. With reference to the sequence diagram of FIG. 3, an operation related to the extension call between the mobile phone terminal 3 and the extension intercom base unit 4 will be described.

  First, when an extension call button (not shown) provided in the operation input receiving unit 42 of the extension interphone base unit 4 is pressed, the extension interphone base unit control unit 43 is transferred from the wireless communication unit 44 to the interphone base unit 1. An extension call request is made to the terminal. In the interphone base unit 1, when the extension call request transmitted from the extension interphone base unit 4 is received by the wireless interface (I / F) unit 15, the interphone base unit control unit 14 is carried by the wireless interface (I / F) unit 15. An extension call notification is sent to the telephone terminal 3. In the mobile phone terminal 3, when the extension call notification transmitted from the intercom base unit 1 is received by the second radio unit 33, the terminal control unit 36 causes the speaker 31 to ring a ringing tone (extension ringing tone). Then, if the householder who heard the ringing tone presses a response button (not shown) provided in the operation input reception unit 35 of the mobile phone terminal 3, the terminal control unit 36 makes the intercom master unit from the second radio unit 33. 1 is notified of the extension call response. When the intercom base unit 1 receives the extension call response notification transmitted from the mobile phone terminal 3 by the wireless interface (I / F) unit 15, the intercom base unit control unit 14 is added from the wireless interface (I / F) unit 15. An extension call permission notification is sent to the intercom base unit 4 and the mobile phone terminal 3. When the extension intercom base unit 4 receives the extension call permission notification transmitted from the interphone base unit 1 by the wireless communication unit 44, the extension interphone base unit control unit 43 transmits the ringing sound that was ringed from the speaker of the voice input / output unit 41. Stop and enter the extension call state. Similarly, when the mobile phone terminal 3 receives the extension call permission notification transmitted from the intercom base unit 1 at the second radio unit 33, the terminal control unit 36 stops the ringing sound that is ringing from the speaker 31, and the extension call state Migrate to In the extension interphone base unit 4, the voice input from the voice input / output unit 41 is converted into voice data by the extension interphone base unit control unit 43 and transmitted from the wireless communication unit 44 to the interphone base unit 1. In the intercom base unit 1, when the voice data transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 15, the intercom base unit control unit 14 receives the voice data from the wireless interface (I / F) unit 15. Then, the data is transferred to the mobile phone terminal 3. In the mobile phone terminal 3, when the second wireless unit 33 receives the voice data transmitted from the intercom base unit 1, the terminal control unit 36 converts the voice data into an analog voice signal and receives voice (received voice) from the speaker 31. Ring. In addition, the voice (speech voice) input from the microphone 30 is converted into voice data by the terminal control unit 36 and transmitted to the interphone base unit 1 from the second radio unit 33. In the interphone base unit 1, the mobile phone terminal 3 Audio data transmitted from the wireless interface (I / F) unit 15 is transferred to the extension intercom base unit 4. In the extension interphone base unit 4, when the wireless communication unit 44 receives the voice data transmitted from the interphone base unit 1, the extension interphone base unit control unit 43 converts the voice data into an analog voice signal and converts the voice input / output unit 41. Sounds (received voice) from the speaker. In this way, an extension call can be made between the extension intercom base unit 4 and the mobile phone terminal 3. The operation when the extension intercom base unit 4 is called from the mobile phone terminal 3 is basically the same, and the description thereof is omitted.

(Embodiment 2)
The present embodiment is characterized in that a wireless communication device 5 corresponding to a wireless interface unit is configured separately from the interphone master unit 1 as shown in FIG. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals, and illustration and description thereof are omitted as appropriate.

  The wireless communication device 5 separates the video signal and the audio signal that are frequency-division-multiplexed and transmitted from the doorphone slave unit 2 through the signal line Ls branched by the interphone master unit 1 and also transmits the signal line Ls to the doorphone slave unit 2. A demultiplexing processing unit 50 for transmitting audio signals via the wireless LAN, a wireless communication unit 51 for performing wireless communication compliant with standards related to wireless LAN (for example, IEEE 802.11 standards), and a center apparatus via the Internet 6 (to be described later), and a control unit 53 that controls each unit with a CPU as a main component.

  The center device 6 transmits the video transmitted from the doorphone slave unit 2 via the signal line Ls to the wireless communication device 5, stores the video received via the wireless communication device 5, and stores the stored video on the Internet. And a function of transmitting to the mobile phone terminal 3 (video management function) and a SIP server function. SIP (Session Initiation Protocol) is a protocol that creates, modifies, and disconnects a session that is necessary for exchanging voice, video, and text messages to two or more parties in the application layer. (Internet Engineering Task Force) and is defined in RFC3261. That is, if the SIP server function of the center device 6 is used, voice data is transmitted and received between the mobile phone terminal 3 and the wireless communication device 5 by packet exchange via the SIP server (not shown in FIG. 4) of the mobile phone carrier. Therefore, a call (half-duplex call) can be performed between the mobile phone terminal 3 and the doorphone slave unit 2 existing outside the communication area of the wireless interface (I / F) unit 51. The technology for transmitting and receiving voice data by packet switching in the mobile phone terminal 3 is called “Push-to-Talk (trademark)” and has already been provided in Japan. However, since the center device 6 can be configured by a general-purpose computer device having a network communication function, a detailed description of the configuration is omitted.

  Next, an operation related to a call between the door phone slave unit 2 and the mobile phone terminal 3 in the wireless communication area of the wireless communication device 5 will be described.

  When the call button is pressed and a call signal is transmitted from the intercom unit 2 via the signal line Ls, the control unit 53 of the wireless communication device 5 is transferred from the wireless interface (I / F) unit 51 to the mobile phone terminal 3. A call notification is sent to the user. In the mobile phone terminal 3, when the second wireless unit 33 receives the call notification transmitted from the wireless communication device 5, the terminal control unit 36 causes the speaker 31 to ring. If the householder who heard the ringing tone presses the response button provided in the operation input receiving unit 35 of the mobile phone terminal 3, the terminal control unit 36 responds to the wireless communication device 5 from the second wireless unit 33. Make a notification. In the wireless communication device 5, when the response notification transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 51, the control unit 53 transmits the response notification to the interphone base unit control unit 14 of the interphone base unit 1. To do. When receiving the response notification from the wireless communication device 5, the intercom base unit control unit 14 forms a communication path via the signal line Ls with the door phone slave unit 2 and performs a call permission notification to the wireless communication device 5. In addition, the ringing tone that is ringing from the speaker of the voice input / output unit 12 is stopped. In the wireless communication device 5, the call permission notification received from the interphone master unit 1 is transmitted from the wireless interface (I / F) unit 51 to the mobile phone terminal 3. In the mobile phone terminal 3, when the second wireless unit 33 receives the call permission notification transmitted from the wireless communication device 5, the terminal control unit 36 stops the ringing sound that is ringing from the speaker 31. Then, the video and audio (speech voice) transmitted from the doorphone slave unit 2 are converted into video data and audio data by the control unit 53 of the wireless communication device 5, respectively, and the cellular phone is transmitted from the wireless interface (I / F) unit 51. It is transmitted to the terminal 3. In the mobile phone terminal 3, when the video data and audio data transmitted from the wireless communication device 5 are received by the second radio unit 33, the terminal control unit 36 reconstructs the original video from the video data and displays it on the monitor unit 34. At the same time, the voice data is converted into an analog voice signal and a voice (received voice) is generated from the speaker 31. In addition, voice (speech voice) input from the microphone 30 is converted into voice data by the terminal control unit 36 and transmitted from the second radio unit 33 to the radio communication device 5. In the wireless communication device 5, when the voice data transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 51, the control unit 53 converts the voice data into an analog voice signal and performs the demultiplexing processing unit 50. Thus, a voice (received voice) is generated from the speaker 21 of the doorphone slave unit 2 and a call can be made between the doorphone slave unit 2 and the mobile phone terminal 3. However, for the call and video transmission between the mobile phone terminal 3 and the door phone slave unit 2 via the interphone base unit 1 and the wireless communication device 5, a predetermined time has elapsed since the response button was pressed on the mobile phone terminal 3. Or when the response button is pressed again.

  Next, an operation related to a call between the door phone slave unit 2 and the mobile phone terminal 3 outside the wireless communication area of the wireless communication device 5 will be described.

  When the intercom base unit control unit 14 of the intercom base unit 1 is set to the absence mode, when the call button is pressed and a call signal is transmitted from the intercom handset 2 via the signal line Ls, the wireless communication device The control unit 53 of 5 makes a call request to the mobile phone terminal 3 from the network communication unit 52 to the center device 6. Then, a session is established between the door phone slave unit 2 and the mobile phone terminal 3 via the SIP server of the center device 6 and the mobile phone carrier as a SIP server, and voice data can be transmitted and received by packet exchange. As a result, a call can be made between the doorphone slave unit 2 and the mobile phone terminal 3. However, since the procedure for establishing and disconnecting a session by SIP is well known, detailed description thereof will be omitted. Since not only audio data but also video data can be transmitted / received by packet exchange, it is possible to make a call with the intercom terminal 2 while viewing the video of the visitor on the mobile phone terminal 3.

  As described above, according to the present embodiment, since voice can be exchanged between the mobile phone terminal 3 and the door phone slave unit 2 via the Internet, the mobile phone terminal 3 can be used to make a call with a visitor even when away from home. In addition, since voice data is transmitted and received by packet switching instead of normal circuit switching, the cost required for calls (charges paid to mobile phone operators) can be reduced without using a circuit-switching mobile phone network. Can do. In this embodiment, both the network communication unit 52 and the wireless interface (I / F) unit 51 are provided in the wireless communication device 5, but the communication device including only the network communication unit 52 and the wireless interface (I / F) unit and the wireless device may be connected to the interphone base unit 1 through the communication device.

(Embodiment 3)
The present embodiment is an application of the technical idea of the present invention to an intercom system for an apartment house, as shown in FIG. 5, a doorphone child device 2 installed outside (entrance) of each dwelling unit of the apartment house, It is installed indoors in each dwelling unit of the apartment house, and is installed in the intercom base unit 1 connected to the door phone slave unit 2 via the signal line Ls and the common entrance (lobby) of the apartment house. In addition, a lobby intercom device 7 connected to the intercom master unit 1 of each dwelling unit is provided via the communication line Lx and the control line Ly. However, the basic configuration of the intercom base unit 1 in the present embodiment is the same as that of the first embodiment, and the doorphone slave unit 2 and the mobile phone terminal 3 are the same as those of the embodiment. Reference numerals are assigned and illustrations and descriptions are omitted as appropriate.

  The interphone master unit 1 installed in each dwelling unit includes a demultiplexing processing unit 10, a monitor unit 11, a voice input / output unit 12, an operation input receiving unit 13, and an interphone master unit that are connected to the door phone slave unit 2 through the signal line Ls. In addition to the control unit 14 and the radio interface (I / F) unit 15, the video signal and the audio signal that are frequency division multiplexed and transmitted from the lobby intercom apparatus 7 are separated via the communication line Lx. At the same time, a demultiplexing processing unit 16 that transmits audio signals to the lobby intercom apparatus 7 via the communication line Lx, and a control signal transmission / reception unit that transmits and receives control signals to and from the lobby intercom apparatus 7 via the control line Ly. 17. Here, the communication line Lx and the control line Ly are composed of a multi-pair twisted pair cable having a plurality of pairs in the sheath, and the communication line Lx and the control line Ly (this is called the trunk line L1) connected to the lobby intercom device 7. The intercom master unit 1 of each dwelling unit is connected to the communication line Lx and the control line Ly (this is called a dwelling unit separate line L2) branched from each. However, the intercom master unit 1 is always connected to the control line Ly of the dwell unit separate line L2, but is not always connected to the communication line Lx, but only when called by the lobby intercom device 7. The intercom master control unit 14 controls opening and closing so as to be connected.

  The lobby intercom device 7 includes a microphone, a speaker, a microphone amplifier that amplifies the output of the microphone, a voice input / output unit 70 that has a speaker amplifier that amplifies the input to the speaker, an imaging unit 71 that images a visitor, and a residence number. It has a number key for designating and a call button (not shown). An operation input reception unit 72 that receives operation inputs, a control signal transmission / reception unit 73 that transmits and receives control signals via the control line Ly, and a lobby intercom control unit 74 that controls each unit with the CPU as a main component. ing. The lobby intercom control unit 74 modulates the video signal output from the imaging unit 71 and frequency-division-multiplexes it with the audio signal output from the audio input / output unit 70 and is transmitted from the interphone master unit 1 via the communication line Lx. It has a function of separating audio signals. Here, an address (dwelling unit number) is individually set in the intercom base unit control unit 14 of the intercom base unit 1, and when the number key is operated and the operation input receiving unit 72 receives the input of the dwelling unit number, The lobby intercom control unit 74 generates a control signal (call command) that specifies the input dwelling unit number, and transmits the generated control signal from the control signal transmission / reception unit 73 to all interphone master units 1 via the control line Ly. . If the voice input / output unit 70 includes at least one of an echo canceller and a voice switch, the lobby intercom device 7 can make a voice call (hands-free call).

  On the other hand, if the dwelling unit number included in the control signal is the own dwelling unit number, the interphone mastering unit control unit 14 of the interphone master unit 1 connects the communication line Lx of the dwelling unit separate line L2 and the imaging unit 71 of the lobby intercom device 7. The video of the visitor imaged and transmitted via the communication line Lx is displayed on the monitor unit 11 and a ringing tone is generated from the speaker of the voice input / output unit 12. If the housekeeper presses the response button of the operation input receiving unit 13 in response to the ringing tone, it is possible to make a call only between the lobby intercom device 7 and the selected interphone master unit 1 and select The visitor imaged by the imaging unit 71 can be displayed on the monitor unit 11 only by the interphone master unit 1 that has been made.

  Next, an operation related to a call between the lobby intercom device 7 and the mobile phone terminal 3 will be described.

  When the control signal (call command) transmitted from the lobby intercom device 7 via the control line Ly is received by the control signal transmission / reception unit 17, the interphone base unit control unit 14 of the interphone base unit 1 performs the wireless interface (I / F) unit. 15, the mobile phone terminal 3 is notified of a call and a ringing tone is emitted from the speaker of the voice input / output unit 12. In the mobile phone terminal 3, when the second wireless unit 33 receives the call notification transmitted from the intercom base unit 1, the terminal control unit 36 causes the speaker 31 to ring. If the householder who heard the ringing tone presses the response button provided in the operation input receiving unit 35 of the mobile phone terminal 3, the terminal control unit 36 responds to the interphone base unit 1 from the second radio unit 33. Make a notification. In the intercom base unit 1, when the response notification transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 15, the intercom base unit control unit 14 receives the mobile phone terminal from the wireless interface (I / F) unit 15. 3 is notified of the call permission, and the ringing sound that has been ringing from the speaker of the voice input / output unit 12 is stopped. In the mobile phone terminal 3, when the second wireless unit 33 receives the call permission notification transmitted from the intercom base unit 1, the terminal control unit 36 stops the ringing sound that is ringing from the speaker 31. Then, the video and audio (speech voice) transmitted from the lobby intercom device 7 to the interphone base unit 1 are converted into video data and audio data by the interphone base unit control unit 14, respectively, and the radio interface (I / F) unit 15. To the mobile phone terminal 3. In the mobile phone terminal 3, when the video data and audio data transmitted from the intercom base unit 1 are received by the second radio unit 33, the terminal control unit 36 reconstructs the original video from the video data and displays it on the monitor unit 34. At the same time, the voice data is converted into an analog voice signal and a voice (received voice) is generated from the speaker 31. In addition, voice (speech voice) input from the microphone 30 is converted into voice data by the terminal control unit 36 and transmitted from the second radio unit 33 to the interphone master unit 1. In the interphone base unit 1, when the voice data transmitted from the mobile phone terminal 3 is received by the wireless interface (I / F) unit 15, the interphone base unit control unit 14 converts the voice data into an analog voice signal and demultiplexes the voice data. It is transmitted from the processing unit 16 to the lobby intercom device 7, and a voice (received voice) is sounded from the speaker of the voice input / output unit 70 of the lobby intercom device 7, and a call can be made between the lobby intercom device 7 and the mobile phone terminal 3. It becomes. However, the telephone conversation and video transmission between the mobile phone terminal 3 and the lobby intercom device 7 via the interphone master unit 1 may be performed after a predetermined time has elapsed since the response button was pressed on the mobile phone terminal 3 or again. The process ends when the button is pressed.

  In addition, although description is abbreviate | omitted, also in this embodiment, the extension interphone main unit 4 is installed in each dwelling unit, and a telephone call is possible between the extension interphone main unit 4 and the lobby intercom apparatus 7. Similarly to the second embodiment, the wireless interface unit (wireless communication device 5) is configured separately from the interphone master unit 1, or further includes a communication device including only the network communication unit 52, and a wireless interface (I / F). ) Unit and the wireless device may be connected to the intercom base unit 1 through the communication device. If the wireless interface (I / F) unit is configured as a thin panel-shaped unit that can be juxtaposed next to the interphone base unit 1, the appearance of the interphone base unit 1 is not impaired, and it can be easily performed. Since it can be retrofitted, it also has the advantage of improved usability.

As described above, the present invention improves the usability related to a call with a door phone slave unit.

DESCRIPTION OF SYMBOLS 1 Intercom main unit 2 Door phone cord 3 Mobile phone terminal 15 Wireless interface (I / F) part 32 1st radio part 33 2nd radio part

Claims (4)

A door phone slave installed outside the dwelling unit, and an intercom master unit installed indoors in the dwelling unit and connected to the door phone slave via a signal line, and an audio signal or video via the signal line In an intercom system capable of intercom communication between the interphone master unit and the door phone slave unit by exchanging signals,
The interphone base unit is a mobile phone terminal having a wireless communication unit that wirelessly communicates without going through a mobile phone network of a mobile phone operator or an extension interphone base unit having a wireless communication unit that makes wireless communication without going through the mobile phone network In contrast, the intercom base unit and the mobile phone terminal or the intercom base unit and a wireless interface means for interfacing the extension interphone base unit,
The interphone base unit can receive a call from the mobile phone terminal or the extension interphone base unit via the wireless interface means. Door phone slave unit installed outside the dwelling unit of an apartment house, interphone master unit installed indoors in the residence unit and connected to the door phone slave unit via a signal line, and installed at a common entrance of the apartment house And an intercom system comprising a lobby intercom device connected to the interphone master unit via a control line and a communication line,
The interphone base unit is a mobile phone terminal having a wireless communication unit that wirelessly communicates without going through a mobile phone network of a mobile phone operator or an extension interphone base unit having a wireless communication unit that makes wireless communication without going through the mobile phone network In contrast, the intercom base unit and the mobile phone terminal or the intercom base unit and a wireless interface means for interfacing the extension interphone base unit,
The interphone base unit can receive a call from the mobile phone terminal or the extension interphone base unit via the wireless interface means.   3. The intercom system according to claim 1, wherein the interphone base unit can make an extension call with the mobile phone terminal or the extension intercom base unit via the wireless interface unit.   An interphone master unit installed inside a dwelling unit and capable of intercom calls by exchanging audio signals or video signals via a signal line with a doorphone sub unit installed outside the dwelling unit, and a mobile phone operator For the mobile phone terminal having a wireless communication unit that wirelessly communicates without going through the mobile phone network or the expansion interphone parent device having the wireless communication unit that wirelessly communicates without going through the mobile phone network, the interphone master unit and the It has a wireless interface means for interfacing a mobile phone terminal or the interphone master unit and the extension interphone master unit, and can receive a call from the mobile phone terminal or the extension interphone master unit via the wireless interface means. Interphone master unit characterized by.

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