JP2017108432A - Intercom system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intercom system that improves usability in call with an intercom slave unit.SOLUTION: An intercom system includes a radio I/F unit 15 for interfacing radio communication functions of a master unit 1 and a portable IP telephone terminal 3 for the portable type IP telephone terminal 3 which has a radio communication function (radio LAN function) for connecting to a radio LAN by a radio communication unit 32 and an IP telephone function for transmitting/receiving audio packets through the Internet by a network communication unit 16 of the master unit 1 to perform calling. Audio signals are received/delivered between the portable IP telephone terminal 3 and an intercom slave unit 2 via the radio I/F unit 15. Therefore, even when not subscribed to a subscriber telephone line, usability is improved because not only the master unit 1, but also the portable IP telephone terminal 3 can be used to call with the door intercom slave unit 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an intercom system.

  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 IP telephone contracts has increased rapidly, and an increasing number of households make an external line call from their homes without using a subscriber telephone line. 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 problems, and an object of the present invention is to improve usability related to a call with a door phone slave unit.

  The intercom system of the present invention is a door phone slave unit installed outdoors of each dwelling unit of an apartment house, an interphone master unit installed indoors of the dwelling unit and connected to the door phone slave unit via a signal line, A lobby intercom device installed at a common entrance of the apartment house and connected to the interphone master unit installed at each dwelling unit of the apartment house via a communication line, and an audio signal via the signal line The interphone master unit and the lobby intercom device can communicate with each other through the communication line, and the interphone master unit and the lobby intercom device can communicate with each other via the communication line. In the intercom system in which interphone communication is possible, the doorphone slave unit includes imaging means for imaging a visitor. Then, the video captured by the imaging unit is transmitted to the interphone master unit via the signal line, and the lobby intercom apparatus includes an imaging unit that captures a visitor, and the video captured by the imaging unit Is transmitted to the interphone base unit via the communication line, and the interphone base unit includes a microphone and a speaker and at least one of a voice switch or an echo canceller and performs a voice call, and also via the signal line. It comprises display means for displaying the video received from the intercom unit and the video received from the lobby intercom device via the communication line, and further, the interphone master unit includes a line connected to the Internet and the line Network interface means for interfacing with the interphone master unit, and the line A wireless interface means for interfacing with a wireless communication function of the portable IP telephone terminal for a portable IP telephone terminal having an IP telephone function for making a call via the Internet and a wireless communication function for wireless communication; The audio signal is exchanged between the portable IP telephone terminal, the door phone slave unit, and the lobby intercom device via an interface unit, and the video received from the door phone slave unit and the lobby intercom device is transmitted to the wireless communication device. When it is transmitted to the portable IP telephone terminal via the interface means and a predetermined time has elapsed from the start of the voice transmission / reception, the transmission / reception of the voice signal between the portable IP telephone terminal and the door phone slave unit is terminated. And when a predetermined time has elapsed since the start of the voice exchange, the portable IP The transmission / reception of the audio signal between the talk terminal and the lobby intercom apparatus is terminated.

  Further, the intercom system of the present invention includes a door phone slave installed outdoors in a dwelling unit, and an interphone master set installed indoors in the dwelling unit and connected to the door phone slave via a signal line, In the interphone system in which an interphone call is possible between the interphone master unit and the door phone slave unit by transmitting and receiving a voice signal through the signal line, the interphone master unit includes a microphone and a speaker, a voice switch, or an echo. A network interface means for interfacing a line connected to the Internet and the interphone master unit, an IP telephone function for making a call via the Internet from the line, and a radio Mobile phone with wireless communication function A wireless interface means for interfacing the intercom base unit and a wireless communication function of the portable IP telephone terminal to an IP telephone terminal is provided in the interphone base unit, and the portable IP telephone terminal is connected via the wireless interface means. The voice signal is exchanged between the portable IP phone terminal and the door phone slave unit when a predetermined time has passed since the voice exchange is started. And an additional master unit that can communicate with the interphone master unit via the wireless interface unit, and the audio signal is transmitted between the extension master unit and the door phone slave unit via the wireless interface unit. It is characterized by giving and receiving.

  The intercom system of the present invention has an effect that it is possible to improve the usability related to a call with a door phone handset.

1 is a system configuration diagram showing Embodiment 1 of the present invention. It is a sequence diagram for demonstrating the operation | movement regarding the telephone call of a doorphone subunit | mobile_unit and a portable IP telephone terminal in the same as the above. It is a sequence diagram for demonstrating the operation | movement regarding the extension telephone call of a portable IP telephone terminal and an expansion | extension main | base station in the same as the above. It is a system block diagram which shows Embodiment 2 of this 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 intercom master unit (hereinafter abbreviated as “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 base unit 1 in the present embodiment can wirelessly communicate with the portable IP telephone terminal 3 via a wireless interface unit described later.

  The portable IP telephone terminal 3 includes a microphone 30 and a speaker 31, a wireless communication unit 32 for performing wireless communication in accordance with wireless LAN standards (for example, IEEE 802.11 standards), and a display device such as a liquid crystal display. A wireless communication unit 32, a monitor unit 33 having an operation button such as a numeric keypad, an operation input receiving unit 34 that receives an operation input, and a terminal control unit 35 that controls each unit with the CPU as a main component. Has a wireless communication function (wireless LAN function) for connecting to and communicating with a wireless LAN, and an IP telephone function for making a call by transmitting and receiving voice packets via the Internet from the network communication unit 16 of the base unit 1 described later. Yes. Here, a unique telephone number starting with “050” is assigned to the portable IP telephone terminal 3. For example, an outside line transmission and an outside line are made using an IP telephone service provided by an ISP (Internet connection service provider). Incoming calls are possible. However, the details of the wireless LAN function and the IP telephone function compliant with the IEEE 802.11 standards of the portable IP telephone terminal 3 are well known in the art and will not be described in detail.

  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 base unit 1 via the signal line Ls And a demultiplexing processing unit 24 for separating. 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 base unit 1 multiplexes the video signal and the audio signal that are frequency-division multiplexed and transmitted from the intercom unit 2 via the signal line Ls and transmits the audio signal to the intercom unit 2 via the signal line Ls. A separation processing unit 10, a monitor unit 11 that has a display device such as a liquid crystal display or a CRT, demodulates and displays the video signal separated by the demultiplexing processing unit 10, and amplifies the output of the microphone, speaker, and microphone. A voice input / output unit 12 having a microphone amplifier and a speaker amplifier that amplifies the input to the speaker, an operation input receiving unit 13 having an operation button such as a response button (not shown) and receiving an operation input, and a CPU A radio that interfaces the base unit control unit 14 that controls each unit as a component, and the base unit 1 (base unit control unit 14) and the wireless communication function of the portable IP telephone terminal 3 And interface (I / F) section 15, and a network communication unit 16 to communicate over the Internet. The wireless I / F unit 15 performs wireless communication in conformity with standards related to a wireless LAN (for example, IEEE 802.11 standards), like the wireless communication unit 32 of the portable IP telephone terminal 3. The network communication unit 16 is connected to the Internet via a communication device (cable modem, ONU, etc.) corresponding to a communication line (coaxial cable line or optical fiber line).

  The present embodiment also includes a communication device (hereinafter referred to as “additional master unit”) 4 having a function of performing wireless communication with the base unit 1 in the same manner as the portable IP telephone terminal 3. The extension 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 voice input / output having a speaker amplifier that amplifies the input to the speaker. Unit 41, an operation input receiving unit 42 that includes an operation button such as a response button (not shown) and receives an operation input, an expansion master control unit 43 that controls each unit with a CPU as a main component, and wireless And a wireless communication unit 44 for performing wireless communication compliant with LAN standards (for example, IEEE 802.11 standards). Here, a unique IP address (private address) is assigned to each of the parent device 1, the portable IP telephone terminal 3, and the additional parent device 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 thus the description thereof is omitted. In addition, if the voice input / output unit 12 of the master unit 1 and the voice input / output unit 41 of the extension master unit 4 each include at least one of an echo canceller and a voice switch, the master unit 1 and the extension master unit 4 perform loudspeaking. A call (hands-free call) can be performed.

  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 base 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 base unit 1 via the signal line Ls. In the base unit 1, the voice input / output unit is transmitted by the base unit control unit 14. The ringing sound is emitted from the 12 speakers and power is supplied through the signal line Ls to activate the imaging unit 23 of the door phone slave unit 2, and the video (moving image) captured by the imaging unit 23 is displayed on the monitor unit 11. Display. Then, if a householder who has confirmed the visitor by the video displayed on the monitor unit 11 presses a response button (not shown) provided on the operation input receiving unit 13 of the base unit 1, the base unit control unit 14 A communication path via the signal line Ls is formed between the intercom unit 2 and the telephone unit 1 and the intercom unit 2 can communicate with each other, and the monitor unit 11 of the main unit 1 during the conversation. It is possible to display an image transmitted from the doorphone slave unit 2. However, the call and video transmission between the base unit 1 and the intercom 2 are terminated 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 portable IP telephone 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 intercom unit 2 via the signal line Ls, the base unit control unit 14 of the base unit 1 is transferred from the wireless I / F unit 15 to the portable IP phone terminal 3. In addition, a call notification is made and a ringing tone is generated from the speaker of the voice input / output unit 12. In the portable IP telephone terminal 3, when the wireless communication unit 32 receives the call notification transmitted from the base unit 1, the terminal control unit 35 causes the speaker 31 to ring. Then, if a householder who has heard the ringing tone presses a response button (not shown) provided in the operation input reception unit 34 of the portable IP telephone terminal 3, the terminal control unit 35 uses the wireless communication unit 32 as a base unit. 1 is notified of the response. When the base unit 1 receives the response notification transmitted from the portable IP telephone terminal 3 by the wireless I / F unit 15, the base unit control unit 14 communicates with the doorphone slave unit 2 through the signal line Ls. And the wireless I / F unit 15 sends a call permission notification to the portable IP phone terminal 3, and further stops the ringing sound that is ringing from the speaker of the voice input / output unit 12. In the portable IP telephone terminal 3, when the wireless communication unit 32 receives the call permission notification transmitted from the base unit 1, the terminal control unit 35 stops the ringing sound that is ringing from the speaker 31. Then, the video and audio (transmitted voice) transmitted from the doorphone slave unit 2 to the base unit 1 are converted into video data and audio data by the base unit control unit 14, respectively, and the wireless I / F unit 15 performs a portable IP phone. When the portable IP telephone terminal 3 receives the video data and audio data transmitted from the base unit 1 by the wireless communication unit 32, the terminal control unit 35 reconstructs the original video from the video data. The sound is displayed on the monitor 33 and the sound data is converted into an analog sound signal, and sound (received sound) is generated from the speaker 31. Also, the voice (transmitted voice) input from the microphone 30 is converted into voice data by the terminal control unit 35 and transmitted from the wireless communication unit 32 to the base unit 1, and in the base unit 1, the mobile IP phone terminal 3 When the transmitted audio data is received by the wireless I / F unit 15, the base unit control unit 14 converts the audio data into an analog audio signal and transmits the analog audio signal to the doorphone sub unit 2 from the demultiplexing processing unit 10. A voice (received voice) is emitted from the speaker 21 and a telephone call can be made between the door phone slave unit 2 and the portable IP telephone terminal 3. However, for a call and video transmission between the portable IP telephone terminal 3 and the door phone slave unit 2 via the base unit 1, does a predetermined time elapse after the response button is pressed on the portable IP telephone terminal 3? Alternatively, the process ends when the response button is pressed again.

  Further, when the extension master unit 4 is installed, when the call notification transmitted from the master unit 1 is received by the wireless communication unit 44 of the extension master unit 4, the extension master unit control unit 43 receives from the speaker of the voice input / output unit 41. Ring the ringer. Then, if the householder who has heard the ringing tone presses a response button (not shown) provided in the operation input receiving unit 42 of the extension base unit 4, the extension base unit control unit 43 receives the base unit from the wireless communication unit 44. 1 is notified of the response. In base unit 1, when response notification transmitted from extension base unit 4 is received by wireless I / F unit 15, base unit control unit 14 forms a communication path via signal line Ls with doorphone slave unit 2. At the same time, the wireless I / F unit 15 sends a call permission notification to the extension base unit 4 and further stops the ringing sound that is ringing from the speaker of the voice input / output unit 12. In the extension base unit 4, when the wireless communication unit 44 receives the call permission notification transmitted from the base unit 1, the extension base unit control unit 43 stops the ringing tone that is ringing from the speaker of the voice input / output unit 41. Then, the video and audio (speech voice) transmitted from the doorphone slave unit 2 to the base unit 1 are converted into video data and audio data by the base unit control unit 14, and the extension base unit 4 is transmitted from the wireless I / F unit 15. When the video data and audio data transmitted from the base unit 1 are received by the wireless communication unit 44, the extension base unit control unit 43 reconstructs the original video from the video data and monitors it. The voice data is displayed on the unit 40 and the voice data is converted into an analog voice signal, and the 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 master unit control unit 43 and transmitted to the master unit 1 from the wireless communication unit 44. In the master unit 1, When the audio data transmitted from the extension base unit 4 is received by the wireless I / F unit 15, the base unit control unit 14 converts the audio data into an analog audio signal and transmits it to the intercom unit 2 from the demultiplexing processing unit 10. Then, a voice (received voice) is sounded from the speaker 21 of the door phone slave unit 2, and a call can be made between the door phone slave unit 2 and the extension master unit 4.

  As described above, according to the present embodiment, even if the subscriber telephone line is not contracted, it is possible to make a call with the door phone cordless handset 2 using not only the base unit 1 but also the portable IP phone terminal 3, thus improving usability. In addition, since the portable IP telephone terminal 3 can make a call with the door phone slave unit 2 without using the Internet, the cost required for the call can be greatly reduced. Further, not only the voice but also an image captured by the imaging unit 23 of the door phone slave unit 2 is relayed from the base unit 1 to the portable IP telephone terminal 3, and the monitor unit 33 of the portable IP phone terminal 3 is relayed from the door phone subunit 2. Since the received video can be displayed, the mobile IP phone terminal 3 can be used to make a call while viewing the video of the visitor. Further, the extension base unit 4 can communicate with the door phone sub unit 2 in the same manner as the portable IP phone terminal 3, and the screen size of the monitor unit 40 is larger than that of the portable IP phone terminal 3. There is an advantage that a voice call (hands-free call) can be performed. In addition, since the wireless I / F unit 15 is built in the base unit 1, no installation space for the wireless interface means is required.

  By the way, in the present embodiment, extension calls between the portable IP phone terminal 3 and the extension base unit 4 and the base unit 1 and extension calls between the portable IP phone terminal 3 and the extension base unit 4 are possible. The operation relating to the extension call between the portable IP telephone terminal 3 and the extension base unit 4 will be described with reference to the sequence diagram of FIG.

  First, when an extension call button (not shown) provided in the operation input receiving unit 42 of the extension base unit 4 is pressed, the extension base unit control unit 43 extends from the wireless communication unit 44 to the base unit 1. Make a call request. In the base unit 1, when the wireless I / F unit 15 receives the extension call request transmitted from the extension base unit 4, the base unit control unit 14 extends the extension from the wireless I / F unit 15 to the portable IP telephone terminal 3. Call notification. In the portable IP telephone terminal 3, when the extension call notification transmitted from the base unit 1 is received by the wireless communication unit 32, the terminal control unit 35 sounds a ringing tone (extension calling tone) from the speaker 31. Then, if a householder who has heard the ringing tone presses a response button (not shown) provided in the operation input reception unit 34 of the portable IP telephone terminal 3, the terminal control unit 35 uses the wireless communication unit 32 as a base unit. 1 is notified of the extension call response. In the base unit 1, when the wireless I / F unit 15 receives the extension call response notification transmitted from the portable IP telephone terminal 3, the base unit control unit 14 receives the extension base unit 4 and the portable type from the wireless I / F unit 15. An extension call permission notice is sent to the IP telephone terminal 3. In the extension base unit 4, when the extension communication permission notification transmitted from the base unit 1 is received by the wireless communication unit 44, the extension base unit control unit 43 stops the ringing tone that was ringing from the speaker of the voice input / output unit 41. Transitions to the extension call state. Similarly, in the portable IP telephone terminal 3, when the extension communication permission notification transmitted from the base unit 1 is received by the wireless communication unit 32, the terminal control unit 35 stops the ringing sound that is ringing from the speaker 31, and the extension call state Migrate to In the extension base unit 4, the voice input from the voice input / output unit 41 is converted into voice data by the extension base unit control unit 43 and transmitted to the base unit 1 from the wireless communication unit 44. When the voice data transmitted from the portable IP telephone terminal 3 is received by the wireless I / F unit 15, the master control unit 14 transfers the voice data from the wireless I / F unit 15 to the portable IP phone terminal 3. In portable IP telephone terminal 3, when voice data transmitted from base unit 1 is received by wireless communication unit 32, terminal control unit 35 converts the voice data into an analog voice signal and receives voice (received voice) from speaker 31. Ring. Also, the voice (transmitted voice) input from the microphone 30 is converted into voice data by the terminal control unit 35 and transmitted from the wireless communication unit 32 to the base unit 1, and in the base unit 1, the mobile IP phone terminal 3 The transmitted audio data is transferred from the wireless I / F unit 15 to the extension master unit 4. In the extension base unit 4, when the voice data transmitted from the base unit 1 is received by the wireless communication unit 44, the extension base unit control unit 43 converts the voice data into an analog voice signal and outputs it from the speaker of the voice input / output unit 41. Sound a voice (received voice). In this way, extension calls can be made between the extension base unit 4 and the portable IP telephone terminal 3. The operation when the extension base unit 4 is called from the portable IP telephone terminal 3 is basically the same, and the description thereof is omitted.

  By the way, in the present embodiment, both the network communication unit 16 and the wireless I / F unit 15 are provided in the parent device 1, but only the network communication unit 16 is provided in the parent device 1 and the wireless interface means is provided in the parent device 1. Or a communication device having only the wireless I / F unit 15 in the master unit 1 and a network communication unit separately from the master unit 1 or having both or one of the wireless interface unit and the network communication unit. A configuration may be provided separately from the machine 1.

(Embodiment 2)
This embodiment is an application of the technical idea of the present invention to an intercom system for an apartment house, as shown in FIG. 4, a doorphone child unit 2 installed outside (entrance) of each dwelling unit of the apartment house, Installed indoors in each dwelling unit of the housing complex and connected to the door phone 2 via the signal line Ls, and installed in the common entrance (lobby) of the housing complex, and each of the communication lines Lx and control And a lobby intercom device 7 connected to the base unit 1 of each dwelling unit via a line Ly. However, the basic configuration of the base unit 1 in the present embodiment is the same as that in the first embodiment, and the door phone slave unit 2 and the portable IP telephone terminal 3 are the same as those in the embodiment. The illustration and description are omitted as appropriate.

  The base 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 a base unit control unit that are connected to the door phone slave unit 2 through a signal line Ls 14, in addition to the wireless I / F unit 15 and the network communication unit 16, the video signal and the audio signal that are frequency-division multiplexed and transmitted from the lobby intercom device 7 are separated via the communication line Lx and A demultiplexing processing unit 17 that transmits audio signals via the communication line Lx and a control signal transmission / reception unit 18 that transmits and receives control signals to and from the lobby intercom apparatus 7 via the control line Ly are provided. 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. .) Is connected to a communication line Lx and a control line Ly (referred to as a dwelling unit separate line L2), and the base unit 1 of each dwelling unit is connected. However, although the base unit 1 is always connected to the control line Ly of the unit separate line L2, it is not always connected to the communication line Lx and is connected only when called by the lobby intercom device 7. As described above, the base unit control unit 14 performs opening / closing control.

  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. An operation input receiving unit 72 having a number key for designation and a call button (not shown) for receiving an operation input, a control signal transmitting / receiving unit 73 for transmitting / receiving a control signal via the control line Ly, and a CPU A lobby intercom control unit 74 that controls each unit as a constituent element is provided. The lobby intercom control unit 74 modulates the video signal output from the imaging unit 71 and frequency-division-multiplexes the audio signal output from the audio input / output unit 70 and transmits the audio transmitted from the base unit 1 via the communication line Lx. It has a function to separate signals. Here, an address (dwelling unit number) is individually set in the base unit control unit 14 of the base unit 1, and when the input of the dwelling unit number is received by the operation input receiving unit 72 by operating the number key, the lobby intercom The control unit 74 generates a control signal (call command) designating the input dwelling unit number, and transmits the generated control signal from the control signal transmission / reception unit 73 to all the parent devices 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 main unit control unit 14 of the main unit 1 connects the communication line Lx of the dwelling unit separate line L2 and picks up images in the image pickup unit 71 of the lobby intercom device 7. The video of the visitor transmitted through 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. Then, if the householder presses the response button of the operation input receiving unit 13 according to the ringing tone, it is possible to make a call only between the lobby intercom device 7 and the selected master unit 1, and the selected one is selected. It is possible to display a visitor imaged by the imaging unit 71 only on the master unit 1 on the monitor unit 11.

  Next, an operation related to a call between the lobby intercom device 7 and the portable IP telephone 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 18, the base unit control unit 14 of the base unit 1 receives the portable IP from the wireless I / F unit 15. A call notification is sent to the telephone terminal 3 and a calling sound is generated from the speaker of the voice input / output unit 12. In the portable IP telephone terminal 3, when the wireless communication unit 32 receives the call notification transmitted from the base unit 1, the terminal control unit 35 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 34 of the portable IP telephone terminal 3, the terminal control unit 35 responds to the base unit 1 from the wireless communication unit 32. Make a notification. In base unit 1, when response notification transmitted from portable IP telephone terminal 3 is received by wireless I / F unit 15, base unit control unit 14 receives the response from portable I / F unit 15 to portable IP telephone terminal 3. A call permission notification is made, and the ringing sound that is ringing from the speaker of the voice input / output unit 12 is stopped. In the portable IP telephone terminal 3, when the wireless communication unit 32 receives the call permission notification transmitted from the base unit 1, the terminal control unit 35 stops the ringing sound that is ringing from the speaker 31. Then, the video and audio (transmitted voice) transmitted from the lobby intercom device 7 to the base unit 1 are converted into video data and audio data by the base unit control unit 14, respectively, and the wireless I / F unit 15 performs a portable IP phone. When the portable IP telephone terminal 3 receives the video data and audio data transmitted from the base unit 1 by the wireless communication unit 32, the terminal control unit 35 reconstructs the original video from the video data. The sound is displayed on the monitor 33 and the sound data is converted into an analog sound signal, and sound (received sound) is generated from the speaker 31. Also, the voice (transmitted voice) input from the microphone 30 is converted into voice data by the terminal control unit 35 and transmitted from the wireless communication unit 32 to the base unit 1, and in the base unit 1, the mobile IP phone terminal 3 When the transmitted audio data is received by the wireless I / F unit 15, the base unit control unit 14 converts the audio data into an analog audio signal and transmits it to the lobby intercom device 7 from the demultiplexing processing unit 17. A voice (received voice) is sounded from the speaker of the voice input / output unit 70, and a call can be made between the lobby intercom apparatus 7 and the portable IP telephone terminal 3. However, for a call and video transmission between the portable IP phone terminal 3 and the lobby intercom device 7 via the base unit 1, does a predetermined time elapse after the response button is pressed on the portable IP phone terminal 3? Alternatively, the process ends when the response button is pressed again.

  In addition, although description is abbreviate | omitted, also in this embodiment, the expansion main | base station 4 is installed in each dwelling unit, the telephone call between the expansion main | base station 4 and the lobby intercom apparatus 7 is possible, and a radio | wireless interface means (radio | wireless) The I / F unit 15) is configured separately from the base unit 1, and further, only the network communication unit 16 is provided in the base unit 1, and the wireless interface unit is provided separately from the base unit 1, or the wireless I / F unit 15 may be provided in the base unit 1 and the network communication unit may be provided separately from the base unit 1, or a communication device including both or one of the wireless interface unit and the network communication unit may be provided separately from the base unit 1. . In addition, if the wireless I / F unit is configured as a thin panel-shaped unit that can be juxtaposed next to the base unit 1, the appearance of the base unit 1 is not impaired, and can be easily retrofitted. Therefore, there is also an advantage that usability is improved.

DESCRIPTION OF SYMBOLS 1 Interphone main unit 2 Door phone subunit 3 Portable IP telephone terminal 15 Wireless interface (I / F) part 32 Wireless communication part

Claims (2)

Door phone cordless devices installed outside each dwelling unit of the apartment, intercom master unit installed indoors in the dwelling unit and connected to the door phone cords via signal lines, and the common entrance of the apartment building And a lobby intercom device connected to the intercom master unit installed in each dwelling unit of the apartment house via a communication line, and transmitting and receiving an audio signal via the signal line. Interphone communication is possible between the main unit and the door phone slave unit, and interphone communication is possible between the interphone main unit and the lobby intercom device by exchanging audio signals via the communication line. In an intercom system
The doorphone slave unit includes an imaging unit that images a visitor, and transmits an image captured by the imaging unit to the interphone master unit via the signal line,
The lobby intercom apparatus includes an imaging unit that images a visitor, and transmits an image captured by the imaging unit to the interphone master unit via the communication line.
The interphone master unit includes at least one of a microphone and a speaker and a voice switch or an echo canceller for performing a voice call, and via the video signal received from the doorphone slave unit via the signal line and the communication line. Comprising display means for displaying video received from the lobby intercom device;
Further, the interphone base unit has a network interface means for interfacing the line connected to the Internet and the interphone base unit, a portable telephone having an IP telephone function for making a call via the Internet from the line and a wireless communication function for wireless communication. Wireless interface means for interfacing with the wireless communication function of the portable IP telephone terminal to the portable IP telephone terminal;
The audio signal is exchanged between the portable IP telephone terminal, the door phone slave unit and the lobby intercom device via the wireless interface means, and the video received from the door phone slave unit and the lobby intercom device is received. Transmission to the portable IP telephone terminal via the wireless interface means, and transmission and reception of the audio signal between the portable IP telephone terminal and the door phone slave unit when a predetermined time has elapsed from the start of the voice transmission / reception An interphone system that terminates the transmission and reception of the audio signal between the portable IP telephone terminal and the lobby intercom device when a predetermined time elapses from the start of the audio transmission / reception. A door phone slave installed outside the dwelling unit, and an interphone master unit installed indoors in the dwelling unit and connected to the door phone slave via a signal line, and receiving an audio signal via the signal line In the intercom system capable of intercom calls between the interphone master unit and the door phone handset by giving and receiving,
The interphone master unit includes a microphone and a speaker, and at least one of a voice switch or an echo canceller, and performs a voice call.
Network interface means for interfacing a line connected to the Internet and the interphone master unit, and a portable IP telephone terminal having an IP telephone function for making a call via the Internet and a wireless communication function for wireless communication from the line A wireless interface means for interfacing an interphone base unit and a wireless communication function of the portable IP telephone terminal;
When the voice signal is exchanged between the portable IP telephone terminal and the door phone cordless handset via the wireless interface means and a predetermined time elapses from the start of the voice exchange, the portable IP telephone terminal and the door phone Terminate the transmission and reception of the audio signal with the child unit,
Furthermore, an extension master unit that can communicate with the interphone master unit via the wireless interface unit is provided, and the audio signal is exchanged between the extension master unit and the door phone slave unit via the wireless interface unit. Interphone system characterized by that.

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