JPH1174977A - Visitor notifying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a visitor notifying system cooperated with a digital radio communication system. SOLUTION: An interphone with monitor TV 2 is provided with a function as the portable terminal of the digital radio communication system, and it is connected to a doorphone with TV camera 1 provided with a TV camera which image-picks up a visitor through a signal line 3. When a signal for notifying the visitor is sent to the earphone with monitor TV 2 from the doorphone wish TV camera 1, the interphone with monitor TV 2 executes a corresponding call with the doorphone with TV camera 1, monitors a visitor video by the video signal of the TV camera, transmits the signal for visitor notification and the video signal of the TV camera to the portable terminal 6' via a base station 5 and realizes the corresponding call and the monitoring of the visitor video in PC 7 provided with the portable terminal 6'.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a visitor notification system.

[0002]

2. Description of the Related Art FIG.
As shown in (a), a door phone 1 with a TV camera having a TV camera for imaging a visitor installed at a gate A, an entrance B or the like, and an interphone 2 with a monitor TV provided in a room C are connected to a signal line 3. When the call button of the intercom with TV camera 1 is pressed, a change in the voltage for detecting the call of the signal line 3 is monitored by the pressing operation when the intercom 2 with the TV is pressed. Side determines that there is a call by detecting
Power is supplied to the intercom 1 with a V camera, and the video signal of the visitor captured by the TV camera is transmitted to the intercom 2 with a monitor TV to monitor the video of the visitor by the monitor TV and to superimpose the audio signal on the video signal. And intercom 2 with monitor TV and intercom 2 with monitor TV
It is possible to make a call between and.

On the other hand, a digital radio communication system such as a PHS has a telephone modular 4 as shown in FIG.
And the like, and a base station 5 connected to a telecommunications facility through a mobile terminal 6 and the like, and existed as a completely different system from the visitor notification system. In other words, the former system is a so-called house facility (basically mounted on a wall), and the latter is a mobile (portable terminal) and stationary (base station) device, so the installation concept was different.

[0004]

For this reason, there has been no digital radio communication system in which the function of the visitor notification system is linked in the past. The present invention has been made in view of the above points, and an object of the present invention is to provide a visitor notification system that works in conjunction with a wireless digital communication system.

[0005]

According to the first aspect of the present invention, there is provided a door phone provided with a TV camera for photographing a visitor, a notice of a visitor in response to a call from the door phone, and a response to the door phone. An intercom provided with a monitor TV for making a call and monitoring a visitor image based on an image signal of the TV camera sent from the door phone, and a signal for informing the visitor and an image signal of the TV camera. From the intercom to the digital wireless communication system side, and a mobile terminal of the digital wireless communication system that enables the reception call between the doorphone and the digital wireless communication system side and the monitoring of the visitor image on the digital wireless communication system side. Phone call between the intercom and the mobile terminal via the intercom. It is possible.

[0006] According to the second aspect of the invention, there is provided a TV for imaging a visitor.
A door phone equipped with a camera, and an intercom provided with a monitor TV that performs a visitor notification in response to a call from the door phone, a telephone call with the door phone, and monitors a visitor image based on a video signal of a TV camera sent from the door phone. In the visitor notification system at least comprising: an interface connected to the data communication device connection interface provided in the mobile terminal of the digital wireless communication system; and the interphone is connected to the digital wireless communication system through the interface and the mobile terminal. And a video signal from a TV camera, as well as a telephone call between the intercom and the digital wireless communication system, and the monitoring of the customer image on the digital wireless communication system. When Without to have a function of Te, via a mobile terminal connected to the interphone and intercom, it is possible to perform answering call between the doorphone and the mobile terminal.

[0007] According to a third aspect of the present invention, there is provided a TV for photographing a visitor.
A door phone equipped with a camera, and an intercom provided with a monitor TV that performs a visitor notification in response to a call from the door phone, a telephone call with the door phone, and monitors a visitor image based on a video signal of a TV camera sent from the door phone. In the visitor notification system, at least the signal for the visitor notification and the video signal of the TV camera are sent to the digital radio communication system side, and the reception call between the intercom and the digital radio communication system side and the digital radio communication system side The base station of the digital wireless communication system that enables monitoring of the visitor's image is provided in the intercom, and when there is a visitor notification from the intercom, the intercom with the function of the base station directly calls the mobile terminal, Compared to when the intercom calls the mobile terminal via the base station , It is possible to eliminate processing between the intercom and the base station.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. (Embodiment 1) The visitor notification system of this embodiment is shown in FIG.
As shown in the schematic configuration diagram of FIG.
Doorphone 1 with TV camera equipped with camera (not shown)
And an incoming call in response to a call from the intercom 1 with a TV camera, a telephone call with the intercom 1 with a TV camera, and a TV sent from the intercom 1 with a TV camera.
Monitor T that monitors visitor images by camera image signals
The basic system configuration is a configuration in which an interphone 2 with a monitor TV equipped with a V is connected via a signal line 3. The interphone 2 with a monitor TV has a basic configuration as a portable terminal of a digital wireless communication system such as a PHS. Features are provided.

[0009] The digital radio communication system includes a base station 5 connected to telecommunication equipment through a telephone modular 4 or the like.
And a PC card-type portable terminal 6 ′. The PC card-type portable terminal 6 ′ is mounted on a personal computer (hereinafter abbreviated as “PC”) 7.
Data is sent and received between the server and the server. FIG.
Shows a circuit configuration of the intercom 2 with a monitor TV, a plurality of doorphones 1 with a TV camera are connected via signal lines 3, respectively, and a call button (not shown) of the connected doorphone 1 with a TV camera. Incoming detection circuit 9 which detects the pressing operation of CPU 8 by a voltage drop of signal line 3 and transmits the detected operation to CPU 8.
, An intercom unit 10 including at least a communication circuit for making a telephone call with the intercom 1 with a TV camera, and a monitor TV for displaying a visitor image based on a video signal of the TV camera; / The intercom 1 with a TV camera to be connected to the video separation circuit 11
A selection circuit 12 selected by the instruction of U8, a power supply circuit 13 for supplying power to the intercom 1 with a TV camera selected by the instruction of the CPU 8, and an audio signal and a video signal superimposed on the signal line 3 are separated ( In the present embodiment, since the audio is FM-modulated and the video signal is used as the baseband, the two are separated by a filter, and each is digitized to be described later in TD.
Output to the MA processing unit 14 and the TDMA processing unit 1
The audio / video separation circuit 11 converts the audio signal input from the audio signal 4 into an analog signal and outputs the analog signal to the signal line 3, and the audio / video signal separated and digitized by the audio / video separation circuit 11 is subjected to TDMA. A TDMA processing unit 14 for multiplexing according to a method, a signal input from the TDMA processing unit 14 is modulated and output to an RF unit 16, which will be described later, and a signal input from the RF unit 16 is demodulated to generate a TDM signal.
A modem 15 for outputting to the A processing unit 14, an RF unit 16 for wirelessly transmitting and receiving a radio signal between the base station 5 and the base station 5 via the antenna 17, and a call operation for the portable terminals 6, 6 'from the intercom. For example, the operation unit 18 includes ten keys.

Here, the audio / video separation circuit 11 separates and extracts a video signal from a signal of the intercom 1 with a TV camera input through the selection circuit 12, and digitizes the separated and extracted video signal. A digitizing circuit 20 for compressing the digitized video signal and performing TDMA
A compression circuit 21 that outputs to the processing unit 14, a filter 19b that separates and extracts an audio signal from a signal of the intercom 1 with a TV camera input via the selection circuit 12, and a separated and extracted audio signal that is demodulated and described later. An FM demodulation unit 22 that outputs to an audio codec unit 23, and a door phone 1 with a TV camera that frequency-modulates a signal input from the audio codec unit 23.
Side, and converts an analog signal input from the FM demodulation unit 22 into a digital signal and converts the analog signal into a TDM signal.
A output to the A processing unit 14 and the TDMA processing unit 14
And an audio codec unit 23 that converts a digital signal input from the TV into an analog signal and outputs the analog signal to an FM modulation unit 24, and converts the audio signal and the video signal sent from the intercom 1 with a TV camera into digital radio communication systems. And the audio signal sent from the digital wireless communication system is sent to the intercom 1 with a TV camera. The video signal of the TV camera can be monitored on the digital wireless communication system side.

FIG. 3 shows a circuit configuration of the base station 5. The base station 5 includes a CPU 30, a 16 Hz (incoming) detection circuit, a DC loop closing circuit, a two-wire four-wire switching circuit, and a selection signal transmission. Telephone line interface consisting of circuit and ADPCM codec (hereinafter abbreviated as telephone line I / F)
31 and a memory time S having an exchange function of exchanging a synchronous serial digital signal in accordance with an instruction from the CPU 30.
W (hereinafter abbreviated as MTSW) 32 and telephone line I / F 3
1 and a TDMA processing unit 33 that multiplexes a serial digital signal input through the MTSW 32 by the TDMA method, modulates a signal input from the TDMA processing unit 33, outputs the modulated signal to an RF unit 35 described later, 35
34, a modem 34 that demodulates a signal input from the PC and outputs the signal to the TDMA processing unit 33, and an RF unit that transmits and receives a signal by a radio signal via the antenna 36 between the interphone 2 with monitor TV and the portable terminals 6, 6 ′. 35.

FIG. 4 shows a circuit configuration of the intercom 1 with a TV camera. The intercom 1 with a TV camera changes the voltage of the signal line 3 by a push operation to notify the intercom 2 with a monitor TV of a visitor notification. A call button 40 for outputting a signal of the user, and a TV camera 41 for taking a picture of the visitor.
And a microphone (MIC) 42 for collecting sound, and a microphone 4
Audio / video to be mixed with an FM modulation unit 43 for frequency-modulating the audio signal input from the receiver 2 and an audio signal frequency-modulated using the video signal as a baseband and output to the monitor TV interphone 2 via the signal line 3 A mixing circuit 44, a filter 45 for separating and extracting an audio signal from a signal sent from the monitor-equipped intercom 2, an FM demodulator 46 for demodulating the separated and extracted audio signal, and a speaker for reproducing the demodulated audio signal. 47.

Here, a video sequence for transmitting a video signal from the intercom 1 with a TV camera to the portable terminal 6 'will be described with reference to FIG. First, when the visitor presses the call button 40 of the intercom 1 with a TV camera, the operation of the call button 40 causes the voltage of the signal line 3 to drop, and the incoming detection circuit 9 of the intercom 2 with the monitor TV causes the voltage of the signal line 3 to drop. And C
The information is transmitted to the PU 8 (step 101). The CPU 8 selects an intercom 1 with a TV camera to be connected to the audio / video separation circuit 11 based on an input from the incoming call detection circuit 11 and supplies power to the selected intercom 1 with a TV camera (step 1).
02). In the intercom 1 with a TV camera, each unit starts operating by power supply from the interphone 2 with a monitor TV, and the audio / video mixing circuit 43 uses the video signal of the TV camera 41 as a baseband and modulates the sound of the microphone 42 The signal is output to the intercom 2 with monitor TV (step 103). At this time, the visitor video taken by the TV camera 41 is displayed on the monitor TV provided in the intercom unit 10 of the monitor TV intercom 2, and the digitizing circuit 20 digitizes the video signal separated and extracted by the filter 19a. The compression circuit 21 compresses the digitized video signal and outputs it to the TDMA processing unit 14 (Step 104).

Next, the monitor TV intercom 2 requests the base station 5 to establish a link channel (SCCH).
(Step 105), receive a link channel assignment from the base station 5 (step 106), and synchronize frequency and time using a synchronization burst (step 107,
108) Further, an asynchronous balanced mode setting (SABM) command is transmitted from the intercom 2 with monitor TV to the base station 5 (step 109), and a UA response is transmitted from the base station 5 to the interphone 2 with monitor (step 110). , SABM command is accepted, and a link channel is established.

After the link channel is established, the intercom 2 with a TV monitor sends a call setup message to the base station 5 to start call setup (step 111), and the base station 5 accepts the call setup to the interphone 2 with a TV monitor. A message is sent to shift to a call acceptance state (step 11).
2). Here, in order to distinguish between the case where the monitor TV intercom 2 calls the portable terminal 6 and the case where the intercom is called, or the intercom 1 with a TV camera which has notified the intercom call.
The subaddress of the call setup message is used to indicate the number of the call. The information field of the call setup message
As shown in FIG. 6, a protocol type 51, a call number 52,
The sub-address information 56 includes a message type 53 in which a call setup message is set, an information element identifier 54 in which a sub-address is set, a sub-address content length 55, and the like. Is set to 01H, and if the intercom number is 2, 02H is set.)
When the portable terminal 6 is called from the intercom 2 with the monitor TV, the operation of the operation unit 18 becomes a start condition, and a call sequence described later is started.

When the portable terminal 6 'has a function of monitoring the image of the TV camera, the video signal of the TV camera is transmitted from the monitor TV intercom 2 to the portable terminal 6' by the following processing. Upon receiving the call from the intercom 2 with the monitor TV, the base station 5 transmits an incoming call message to the portable terminal 6 'equipped with the PC 7 (step 113) to indicate an incoming call. In the mobile terminal 6 ',
Upon receiving an incoming call message from the base station 5, after establishing a link channel in the same manner as described above (step 114).
To 119), and sends an incoming call response message to the base station 5 (step 120). Upon receiving the call response message, the base station 5 transmits a call setup message to the mobile terminal 6 ′ (step 121), and the mobile terminal 6 ′ receiving the call setup message transmits a call setup acceptance message to the base station 5. Thereafter (step 122), the video signal of the TV camera 41 is sent from the monitor TV intercom 2 to the portable terminal 6 ′ (step 123), and the PC 7 to which the portable terminal 6 ′ is attached.
The image of the TV camera 41 can be displayed on the screen.

As described above, after the video signal is transmitted from the intercom 2 with monitor TV to the portable terminal 6 ', the audio signal is transmitted from the intercom 2 with monitor TV to the portable terminal 6' on another channel, and A call sequence for receiving a call between the attached intercom 2 and the portable terminal 6 'will be described with reference to FIG. After the video signal is sent from the monitor TV intercom 2 to the PC 7 on which the portable terminal 6 'is mounted (step 123), the monitor TV intercom 2 establishes a link channel in the same manner as described above (steps 124 to 129). ), And sends a call setup message to the base station 5 to start call setup (step 1).
30). The base station 5 that has received the call setting message from the intercom 2 with monitor TV sends a call setting acceptance message to the intercom 2 with monitor TV, and shifts to a call accepting state (step 131).

The base station 5 includes an intercom 2 with a monitor TV.
When an incoming call is received from the PC 7, an incoming call message is transmitted to the portable terminal 6 'equipped with the PC 7 (step 13).
2) Indicate the incoming call. Upon receiving the incoming message from the base station 5, the portable terminal 6 'establishes a link channel in the same manner as described above (steps 133 to 13).
8), and sends an incoming call response message to the base station 5 (step 139). Upon receiving the call response message, the base station 5 transmits a call setup message to the mobile terminal 6 '(step 140), and the mobile terminal 6' receiving the call setup message transmits a call setup acceptance message to the base station 5. (Step 141). Thereafter, when portable terminal 6 'transmits a call message to base station 5 (step 142), base station 5 which has received the call message from portable terminal 6' transmits a call message to intercom 2 with monitor TV (step 142). 143). If the mobile terminal 6 'is off-hook after sending the call message, the mobile terminal 6' sends a response message to the base station 5 to notify the base station 5 of the acceptance of the incoming call (step 144). Upon receiving the response message, the base station 5 transmits a response confirmation message to the portable terminal 6 '(step 145), and the monitor TV.
A response message is transmitted to the attached intercom 2 (step 146). Thereafter, the intercom 2 with the monitor TV and the portable terminal 6 'shift to the call state (step 1).
47), intercom 2 with monitor TV and portable terminal 6 '
And a customer call notification system and a digital wireless communication system can be linked with each other.

In this embodiment, the audio signal is processed after the video signal is processed from the monitor TV intercom 2 to the portable terminal 6 '. However, the video signal is processed after the audio signal is processed. The processing may be performed, and the processing of the video signal and the audio signal may be performed in parallel. In the present embodiment, the portable terminal 6 ′ and the PC
7 has been described, the mobile telephone 6 having no monitoring function may be used to perform only the mobile telephone 6 with the intercom 1 with a TV camera. .

In the present embodiment, two channels (one channel for an audio signal and one channel for a video signal) are used on each of the intercom 2 with monitor TV and the portable terminal 6 '.
For example, as shown in FIG. 8, information channel I (TCH)
Out of 160 bits for voice, 40 bits for voice
20 bits may be allocated for video, and the audio signal and the video signal may be transmitted on the same channel. In this case, since the transmission rate of the audio signal is 8 kbps,
In order to comply with the digital wireless communication system standard (32 kbps), processing such as compression and decompression of audio signals is required.

(Embodiment 2) In the visitor notification system of Embodiment 1, the intercom 2 with monitor TV has a function as a portable terminal of a digital wireless communication system, so that the cost of the interphone 2 with monitor TV increases. .
Therefore, in the present embodiment, the interface for connecting to the data communication device connection interface provided in the portable terminal of the digital wireless communication system is a monitor TV.
By providing digital wireless communication between the monitor TV intercom 2 and the base station 5 using the portable terminal connected to the interface provided on the intercom 2 with
It is not necessary to provide the function as a portable terminal in the intercom 2 with monitor TV, and the cost of the intercom 2 with monitor TV is reduced.

FIG. 9 is a schematic configuration diagram of the visitor notification system of the present embodiment, and FIG. 10 is a block diagram of the intercom 2 with a monitor TV. Since the basic configuration is the same as that of the visitor notification system of the first embodiment, the same components include:
The same reference numerals are given and the description is omitted. Monitor TV
The intercom 2 has a mobile terminal interface (hereinafter referred to as a mobile terminal I / O) connected to a data communication device connection interface of the mobile terminal 6 ″ via a signal line 26.
F) 25 is provided, the video signal compressed by the compression circuit 21 is transmitted to the portable terminal 6 ″ via the portable terminal I / F 25, and the audio codec unit 23 and the portable terminal 6 ″ The digitalized audio signal is transmitted and received via the I / F 25 for portable terminals. Further, in the first embodiment, the CPU 8 of the intercom 2 with the monitor TV
The digital radio communication is performed by controlling the MA processing unit 14, the modem 15, and the RF unit 16, but in the present embodiment,
The CPU 8 controls the portable terminal 6 ″ via the portable terminal I / F 25.
And performs digital wireless communication with the base station 5. That is, the CPU 8 makes a call request to the portable terminal 6 ″ via the portable terminal I / F 25, thereby performing the above-described video sequence and call sequence processing. The information channel includes a monitor TV. Intercom 2
The data sent via the mobile terminal I / F 25 is kept as it is.

By the way, as shown in FIG.
The intercom 2 with V is disposed on the wall 30 and the data communication device connection interface 28 of the portable terminal 6 ″.
The I / F 25 for a portable terminal is connected via a connector 27 and a cable 26. The mobile terminal 6 ″ is connected to the data communication device connection interface 28 by the connector 2.
After being connected, the charging terminal 29 is held on the wall surface 30 by the charging terminal 29. In FIG. 11, reference numeral 10a denotes a monitor TV constituting the intercom unit 10, and 10b denotes a handset in which a speaker and a microphone of a communication circuit are incorporated.

When the data communication device connection interface 28 of the portable terminal 6 ″ is an infrared interface, an infrared interface for transmitting a signal by infrared may be provided in the monitor TV interphone 2 (third embodiment). In the present embodiment, the intercom 2 with monitor TV has the function of the base station 5 in the visitor notification system of the first embodiment.

FIG. 12 is a schematic configuration diagram of the visitor notification system of the present embodiment, and FIG. 13 is a block diagram of the intercom 2 with a monitor TV. Since the basic structure of the visitor notification system is the same as that of the first embodiment, the same components are denoted by the same reference numerals and description thereof will be omitted. In this embodiment, the intercom 2 with the monitor TV is set to 16 Hz.
A telephone line interface (telephone) comprising an (incoming) detection circuit, a DC loop closing circuit, a two-wire four-wire switching circuit, a selection signal transmission circuit, and an ADPCM codec unit, and connected to telephone communication equipment via the telephone modular 4 or the like. Line I /
F) 31 and the TDMA processing unit 1
4, the compression circuit 21 and the audio codec unit 23, or
An MTSW 32 having an exchange function of exchanging a synchronous serial digital signal with a telephone line I / F 31 is provided, and the monitor TV interphone 2 has the function of the base station 5.

Therefore, the intercom with monitor TV 2
When performing digital wireless communication between the mobile terminal 6 ′ and
Since the processing between the base station 5 and the interphone with monitor 2 in the video sequence shown in FIG. 5 and the call sequence shown in FIG. 7 described above becomes unnecessary, the time required for the processing can be reduced. Needless to say, the present embodiment may be applied to the visitor call system of the second embodiment.

[0027]

As described above, according to the first aspect of the present invention, a door phone provided with a TV camera for taking a picture of a visitor, an announcement of a visitor in response to a call from the door phone, a telephone call with the door phone, and a telephone call with the door phone are provided. And an intercom provided with a monitor TV for monitoring a visitor image based on the video signal of the TV camera sent from the user. It is equipped with a mobile terminal of a digital wireless communication system that enables the telephone to be sent to the system side and also enables the telephone call between the door phone and the digital wireless communication system and the monitoring of visitor images on the digital wireless communication system side. A call between the door phone and the mobile terminal. There is an effect that it is possible to link the arm and the digital radio communication system.

According to a second aspect of the present invention, there is provided a door phone provided with a TV camera for capturing an image of a visitor, notification of a visitor in response to a call from the door phone, reception of a call with the door phone, and communication of the TV camera transmitted from the door phone. An intercom provided with a monitor TV for monitoring a visitor image based on an image signal, the intercom provided with an interface connected to a data communication device connection interface provided in a portable terminal of the digital wireless communication system. , A signal for informing of a visitor and a video signal of a TV camera from the intercom to the digital radio communication system through the interface and the portable terminal, and a reception call between the doorphone and the digital radio communication system and a digital radio communication system. Moni of the visitor video , It is possible to make a call between the intercom and the portable terminal via the intercom and the portable terminal connected to the intercom without giving the intercom the function as a portable terminal. There is an effect that the cost can be reduced and the visitor notification system and the digital wireless communication system can be linked.

According to a third aspect of the present invention, there is provided a door phone provided with a TV camera for capturing an image of a visitor, a notification of a visitor in response to a call from the door phone, a telephone call with the door phone, and a TV camera transmitted from the door phone. In a visitor notification system comprising at least an intercom provided with a monitor TV for monitoring a visitor image based on a video signal, a signal for the visitor notification and a video signal of a TV camera are sent to the digital wireless communication system side, and the doorphone and the digital The base station of the digital wireless communication system that enables the reception call with the wireless communication system side and the monitoring of the visitor image on the digital wireless communication system side is provided in the intercom, and when the visitor is notified from the intercom, the base station of the base station is notified. An intercom with a function directly calls the mobile terminal, and the Via Chikyoku compared to when calling mobile terminal, it is possible to eliminate the processing between the intercom and the base station, and shorten the time required for processing,
In addition, there is an effect that the visitor notification system and the digital wireless communication system can be linked.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram illustrating a visitor notification system according to a first embodiment.

FIG. 2 is a block diagram of the intercom with a monitor TV according to the first embodiment;

FIG. 3 is a block diagram of the base station according to the first embodiment;

FIG. 4 is a block diagram of the door phone with a TV camera of the above.

FIG. 5 is a diagram illustrating a video sequence according to the embodiment.

FIG. 6 is a diagram illustrating an information field according to the embodiment.

FIG. 7 is a diagram illustrating a call sequence of the above.

FIG. 8 is a diagram illustrating a slot configuration of an information channel according to the embodiment.

FIG. 9 is a schematic configuration diagram illustrating a visitor notification system according to a second embodiment.

FIG. 10 is a block diagram of an intercom with a monitor TV according to the embodiment.

FIG. 11 is a diagram showing a connection state between the monitor TV intercom and the portable terminal.

FIG. 12 is a schematic configuration diagram illustrating a visitor notification system according to a third embodiment.

FIG. 13 is a block diagram of the intercom with a monitor TV of the above.

FIG. 14A is a schematic configuration diagram showing a conventional customer notification system, and FIG. 14B is a schematic configuration diagram showing a digital wireless communication system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door phone with TV camera 2 Intercom with monitor TV 3 Signal line 5 Base station 6 'portable terminal 7 PC

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Okada 1048 Kadoma Kadoma, Osaka Pref.Matsushita Electric Works, Ltd. (72) Inventor Hideo Tanaka 1048 Kadoma Kadoma, Kadoma, Osaka Pref.

Claims (3)

[Claims] An intercom provided with a TV camera for photographing a visitor, an announcement of a visitor in response to a call from the intercom, a reception call with the intercom, and a visitor image based on a video signal of the TV camera sent from the intercom. And a video signal of a TV camera from the intercom to the digital radio communication system side, and a door phone and a digital radio communication system. A mobile terminal of a digital wireless communication system capable of receiving a call with the user and monitoring a visitor image on the digital wireless communication system side. 2. An intercom provided with a TV camera for imaging a visitor, an announcement of a visitor in response to a call from the intercom, a reception call with the intercom, and a visitor image based on a video signal of the TV camera sent from the intercom. A visitor notification system comprising at least an intercom provided with a monitor TV for monitoring a data communication device connection interface provided in a portable terminal of the digital wireless communication system. A signal for informing the customer and a video signal of the TV camera are sent from the intercom to the digital wireless communication system through the terminal, and a reception call between the doorphone and the digital wireless communication system and a visitor image monitor on the digital wireless communication system are monitored. That made it possible Visitor alarm system which is characterized. 3. An intercom provided with a TV camera for imaging a visitor, an announcement of a visitor in response to a call from the intercom, a reception call with the intercom, and a visitor image based on a video signal of the TV camera sent from the intercom. In a visitor notification system at least comprising an intercom provided with a monitor TV for monitoring a signal, a signal for a visitor notification and a video signal of a TV camera are sent to the digital radio communication system side, and the doorphone and the digital radio communication system side are connected to each other. A base station of a digital wireless communication system, which is capable of monitoring a visitor's image on the side of a telephone call and a digital wireless communication system, is provided on an intercom.