JP2000217099A - Intercom system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operating efficiency of an intercom system in a daily life by adding a function of a global positioning system GPS to the intercom system so as to enhance the added-value of the system. SOLUTION: A master set A reads map information from a storage section 5 to output a map information signal to an image output circuit section 3. A GPS reception section 6 calculates a current reception position from a radio wave signal from a plurality of GPS satellites S. A control circuit section 7 allows the storage section 5 to read the map information corresponding to the position information and to output the map information to the image output circuit section 3 as a map information signal. The image output voltage section 3 overlaps a current position of the master set A obtained from the position information on a map around the current position obtained from the map information and allows a detection section 4 to display the overlapped map. Thus, the master set A can easily obtain environment information of itself, then the added-value of the intercom system is enhanced by obtaining information convenient in daily life and the operating efficiency of the door phone system can be improved by using the system as above when no visitor comes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a GPS (Global
The present invention relates to a door phone system using applied technology of a positioning system for indoor home automation.

[0002]

2. Description of the Related Art Today, in the era of advanced information technology, new fields of information communication such as information networks, mobile communications, and mobile phones are rapidly developing, and they are indispensable in our real life. Is coming. Also, conventionally,
A technique for receiving a radio signal transmitted from a plurality of GPS satellites orbiting the earth and performing a calculation based on the radio signal to obtain a three-dimensional or two-dimensional position of the reception position, that is, GPS Widely known.

[0003] The above-mentioned GPS application field is mainly used as a car navigation system due to improvement of functions and improvement of systematization technology with various services, and is used for operation management of public transportation such as taxis, trains and buses. At present, application systems for the information and communication fields are gradually spreading.

At present, the GPS application technology is mainly used outdoors, but it is expected that the GPS application technology will be developed indoors in the near future.

[0005]

On the other hand, conventionally, it has become possible to talk between a door phone slave unit disposed at an outdoor gate or an entrance, and a door phone slave unit upon receiving a call from the door phone slave unit. Intercom systems that provide communication with a visitor and provide security to the visitor with a different base unit are provided in various configurations (Japanese Patent Laid-Open No.
-262098 and JP-A-4-104586. For example, a push button for calling, a TV camera for imaging a visitor, a door phone slave unit including a microphone and a speaker for calling, a monitor for displaying an image captured by the TV camera of the door phone slave, a microphone for calling, and There is a door phone system in which a master unit having a speaker or the like is connected by a signal line.

In such a conventional door phone system, a telephone call between a door phone slave unit and a base unit arranged at an outdoor entrance or the like, and an image captured by a TV camera of the door phone slave unit are displayed on a monitor of the base unit. Was used only for communication with the visitor (signal of arrival of the visitor) and for ensuring security for the visitor. For this reason, such a conventional door phone system operates only when a visitor visits in daily life, and is in a very low efficiency operation state.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door phone system with G
It is an object of the present invention to provide a door phone system in which a PS function is added to increase added value and operation efficiency in daily life is improved.

[0008]

According to the first aspect of the present invention, there is provided a communication device for communicating with a master unit through a signal line, and an imaging unit for imaging a visitor. A door phone handset placed at an outdoor entrance, etc., and a base phone calling means for making a call with the door phone handset via a signal line,
A display means for displaying an image taken by the image pickup means of the intercom slave unit and transmitted through the signal line, a storage means for storing map information, and controlling the main unit communication means to communicate with the intercom sub unit and display A base unit that is provided indoors and includes a control unit that controls a unit to display a captured image of the imaging unit, a GPS antenna that receives a radio wave from a GPS satellite, and a radio wave signal received by the GPS antenna. Position measuring means for measuring the reception position, wherein the control means of the master unit displays the position information measured by the position measuring means on the display means together with the map information. Not only communication with the user and security for visitors, but also map information and location information (location of the base unit, ie, location of the house) are superimposed together on the display means of the base unit. By being displayed, environmental information around the house can be easily obtained, and useful information for daily life can be obtained to increase added value, and it can be used even when there is no visitor, improving operating efficiency Can be done.

A second aspect of the present invention is characterized in that, in the first aspect of the present invention, the position measuring means is provided in the master unit, and has the same effect as the first aspect of the present invention.

In a third aspect of the present invention, in the first aspect of the present invention, the GPS antenna and the position measuring means are provided in the intercom slave unit.
The PS antenna can be installed outdoors and the construction is simplified.

[0011] The invention of claim 4 is the invention of claim 1 or 2 or 3.
In the invention of the present application, one or more portable wireless terminals having a function of measuring own position and a function of transmitting at least own position information by radio waves, and a radio terminal for receiving radio waves from the radio terminals An antenna, and position information acquisition means for acquiring position information of the wireless terminal from a radio signal received by the antenna for the wireless terminal, wherein the control means of the master unit controls the position of the wireless terminal acquired by the position information acquisition means. The information is displayed on the display means together with the map information, and in addition to the operation of the invention of claim 1, 2, or 3,
The position information of the wireless terminal can be managed by displaying the position information of the wireless terminal together with the map information on the display means of the master unit. For example, a portable wireless terminal is carried by a child or an elderly person, and the position management is performed by the master unit ( By performing man-location management, added value can be increased and operating efficiency can be improved.

A fifth aspect of the present invention is characterized in that, in the fourth aspect of the present invention, the antenna for the wireless terminal and the position information obtaining means are provided in the parent device, and the same effect as that of the fourth aspect of the invention is exerted.

According to a sixth aspect of the present invention, in the fourth aspect of the present invention, the wireless terminal antenna and the position information obtaining means are provided in the intercom slave unit, and the position information of the wireless terminal obtained by the position information obtaining means is transmitted to the signal line. In addition to the function of the invention according to claim 4, since the antenna for the wireless terminal is provided in the intercom slave unit arranged outdoors, the radio wave from the wireless terminal is provided. But easy to receive.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, an access unit for accessing a network constructed indoors or outdoors is provided in the master unit, and the control unit is provided by the access unit. The map information obtained through a network is stored in a storage means. In addition to the effect of the invention according to any one of claims 1 to 6, the latest map information can always be easily obtained and the value of environmental information can be easily obtained. Can be increased.

According to an eighth aspect of the present invention, in any one of the fourth to seventh aspects, the base station transmits and receives at least a voice signal to / from the wireless terminal via the antenna for the wireless terminal. Wherein the means is provided.
In addition to the effect of any one of the inventions, communication between the master unit and the wireless terminal unit can be performed by telephone call, thereby increasing the added value and improving the operation efficiency.

According to a ninth aspect of the present invention, in any one of the fourth to eighth aspects, the control means of the master unit wirelessly transmits map information corresponding to at least the position information of the wireless terminal obtained by the position information obtaining means. It is characterized by being transmitted to the wireless terminal by the communication means. In addition to the operation of any one of claims 4 to 8, in the wireless terminal, map information corresponding to the position information can be obtained. It can be used by displaying position information and map information on the display means, etc., thereby increasing the added value and improving the operating efficiency.

According to a tenth aspect of the present invention, in any one of the fourth to ninth aspects, there is provided an alarming means for issuing an alarm when radio waves transmitted from the wireless terminal cannot be received by the antenna for the wireless terminal. In addition to the operation of the invention according to any one of claims 4 to 9, the home person is notified that the person carrying the wireless terminal has gone far beyond the reception range of radio waves from the wireless terminal. be able to.

According to an eleventh aspect of the present invention, in the tenth aspect of the present invention, the door phone handset is provided with a passage detecting means for detecting the passage of the wireless terminal, and the alarm means is provided for detecting the passage of the wireless terminal by the passage detecting means. 11. The invention according to claim 10, wherein an alarm is issued when radio waves transmitted from the wireless terminal cannot be received by the antenna for the wireless terminal in a situation where a person carrying the wireless terminal is absent when detected. In addition to the action of
Even if the person carrying the wireless terminal is at home, it is possible to reduce false alarms of the alarm means caused by the inability to receive radio waves from the wireless terminal for some reason.

According to a twelfth aspect of the present invention, in the invention according to any one of the fourth to tenth aspects, a passage detecting means for detecting the passage of the wireless terminal is provided in the intercom slave unit, and the passage detecting means detects the passage of the wireless terminal. 5. A pass display means for displaying that a is detected is provided in the master unit.
In addition to the effects of any one of the inventions of (10) to (10), it is possible to notify a home person at home that the person carrying the wireless terminal has gone outdoors.

According to a thirteenth aspect of the present invention, in any one of the fourth to twelfth aspects of the present invention, the passage detecting means for detecting the passage of the wireless terminal, and the wireless terminal having the passage detected by the passage detecting means. A start command transmitting unit for transmitting a start command by a radio signal is provided in the intercom slave unit, and the wireless terminal device measures its own position and receives at least its own position information by radio until a start command is received by the radio signal. Wherein the function of transmitting is stopped.
In addition to the effects of any one of the second aspect, while the wireless terminal is indoors and has not received a start command, the wireless terminal stops its function of measuring its own position and at least the function of transmitting its own position information by radio waves. This can prevent unnecessary power consumption in the wireless terminal.

According to a fourteenth aspect of the present invention, in the thirteenth aspect, the current time information included in the radio signal from the GPS satellite when the wireless terminal receives a start instruction by a radio signal is stored in the storage device of the base unit. Characterized by being stored in
In addition to the effect of the thirteenth aspect, the master device can know the exact passing time of the wireless terminal.

According to a fifteenth aspect of the present invention, in order to achieve the above-mentioned object, the present invention is provided with a handset communication means for making a call with the master through a signal line and an imaging means for imaging a visitor at an outdoor entrance or the like. Intercom slave unit to be arranged, master unit communication means for making a call with the intercom slave unit via the signal line, display means for displaying an image taken by the imaging means of the intercom slave unit and transmitted through the signal line, communication means And a control unit for controlling the display unit to display a captured image of the imaging unit by controlling the display unit to perform a call with the intercom slave unit. Secondary master unit communication means for making a call with the intercom slave unit, display means for displaying an image picked up by the imaging means of the intercom slave unit and transmitted via the master unit by a signal line, and storage means for storing map information , Control the sub-master calling means Talking with the intercom slave unit via the master unit, including control means for controlling the display means to display the captured image of the imaging means, and measuring the position of the sub master unit arranged indoors and its own position One or a plurality of portable wireless terminals having a function of transmitting and transmitting at least their own position information by radio waves, a radio terminal antenna for receiving radio waves from the radio terminals, and a radio terminal antenna. Position information obtaining means for obtaining the position information of the wireless terminal from the received radio signal, and the control means of the sub-base unit displays the position information of the wireless terminal obtained by the position information obtaining means on the display means together with the map information. It is characterized by being displayed, so that communication with the visitor and security for the visitor can be realized as in the past, as well as map information and the location information of the wireless terminal on the display means of the secondary master unit. Can be superimposed and displayed together to manage the location of the wireless terminal. For example, a portable wireless terminal can be carried by a child or an elderly person, and added by performing location management (man location management) with the secondary master unit. Value can be increased and operating efficiency can be improved. In addition, since the sub master unit is not directly connected to the intercom slave unit but is connected to the master unit, it is possible to check the map information and the position information of the wireless terminal at an arbitrary place indoors.

[0023]

(Embodiment 1) FIG. 2 shows a system configuration of this embodiment, and FIG. 1 shows a schematic configuration of a master unit and an intercom slave unit. As shown in FIG. 2A, the door phone system of the present embodiment includes a door phone slave unit B disposed at an outdoor entrance of the entrance G in the house H, and a master unit A disposed indoors. Both are connected by a signal line Ls. In addition, the GPS satellite S
A GPS antenna AT for receiving a radio signal from is installed, and the GPS antenna AT and the master unit A are connected by a transmission line Lx.

As shown in FIG. 1, the intercom slave unit B is a TV camera 20 composed of a CCD camera or the like for imaging a visitor.
A camera circuit unit 21 for processing an output signal of the TV camera 20 and transmitting the processed signal to the master unit A via the signal line Ls; and an audio input unit for transmitting an audio signal to the master unit A via the signal line Ls. 22, a voice output unit 23 for outputting a voice transmitted from the master unit A via the signal line Ls, a call button 24 operated by a visitor, and a CPU as a main component to control the above units. A slave unit control unit 25 for calling the master unit A and making a call with the master unit A is provided.

The voice input unit 22 includes a microphone 22a for collecting a visitor's voice and a microphone 22a.
a, and processes the voice collected by the signal line Ls as a voice signal.
And an audio input circuit 22b for outputting to the The audio output unit 23 includes a speaker 23a and an audio output circuit 23b that processes an audio signal input from the signal line Ls, sounds the speaker 23a, and outputs audio.

As shown in FIG. 1, master unit A transmits an audio signal to intercom slave unit B via signal line Ls to audio input unit 1, and intercom unit B transmits the signal via signal line Ls. An audio output unit 2 for outputting the received audio, and a signal line L
s, an image output circuit unit 3 that receives an image signal transmitted from the intercom slave unit B through the s and outputs the image signal to the display unit 4, and a display unit 4 that displays an image according to the output of the image output circuit unit 3.
A storage unit 5 for reading map information from a storage medium and outputting the map information to the image output circuit unit 3; and performing a calculation based on radio signals from a plurality of GPS satellites S received by the GPS antenna AT to obtain a three-dimensional reception position. Alternatively, a GPS receiving unit 6 for obtaining a two-dimensional position, a CPU as a main component and controlling the above-mentioned units to communicate with the intercom slave unit B and read from the storage unit 5 and positional information obtained by the GPS receiving unit 6. And a control circuit section 7 for displaying the outputted map information on the display section 4.

The voice input unit 1 includes a microphone 1a for collecting the voice of a household member responding to the visitor, and a voice collected by the microphone 1a for processing and a signal line L as a voice signal.
and an audio input circuit 1b for outputting to the s. The audio output unit 2 includes a speaker 2a and an audio output circuit 2b that processes an audio signal input from the signal line Ls, sounds the speaker 2a, and outputs audio. The display unit 4 has a display device such as a CRT or an LCD and displays an image signal from the image output circuit unit 3.
Note that the ringing tone from the intercom slave unit B is also output from the speaker 2a of the audio output unit 2.

The storage section 5 reads out map information stored in a storage medium such as a CD-ROM and outputs it to the image output circuit section 3 as a map information signal. However, the storage medium is not limited to the CD-ROM, and various other storage media can be applied.

The GPS receiver 6 has a conventionally well-known configuration.
The satellite navigation message obtained based on the radio signal from each GPS satellite S is decoded by spectrum despreading and subjected to positioning calculation to calculate the current reception position, that is, the position (position information) of the master unit A.

Next, the operation of the present embodiment will be described.

First, when the call button 24 of the intercom slave unit B is operated by the visitor, the slave unit control unit 25 transmits a calling signal from the voice input unit 22 via the signal line Ls. In the base unit A, the ringing signal transmitted via the signal line Ls is processed by the audio output unit 2, and a ringing sound is output from the speaker 2a. When the household responds to the ringing tone, the control circuit unit 7 controls the voice input unit 1 and the voice output unit 2 to control the signal line Ls
, A call can be made between the audio input unit 22 and the audio output unit 23 of the intercom slave unit B. Simultaneously with the operation of the call button 24, the TV camera 20 of the intercom slave unit B is activated to image the visitor, and the image is transmitted from the camera circuit unit 21 to the master unit A via the signal line Ls. And the parent machine A
The image output circuit unit 3 outputs a display signal to the display unit 4 based on the input image signal, so that an image of the visitor is displayed on the screen 4a of the display unit 4 (FIG. 2 (a)). )reference). In this way, communication by call with the visitor and security for the visitor by the image of the TV camera can be realized in common with the conventional example.

On the other hand, in the present embodiment, the position information calculated by the GPS receiving unit 6 is input to the control circuit unit 7 and the image output circuit unit 3, and the control circuit unit 7 outputs the map information corresponding to the position information. Is read out in the storage unit 5 and output to the image output circuit unit 3 as a map information signal. The image output circuit unit 3 displays the current position of the master unit A obtained from the position information on the display unit 4 so as to be superimposed on the surrounding map of the current position obtained from the map information. Therefore, the screen 4a of the display unit 4 displays the current position of the master unit A, that is, the position P on the map corresponding to the current address of the house H, as shown in FIG.
Is displayed, environmental information around the house H can be easily obtained, and useful information on living can be obtained, thereby increasing the added value of the door phone system. It is possible to improve the operating efficiency by being used for

(Embodiment 2) The system configuration of this embodiment is shown in FIG. 4, and the schematic configuration is shown in FIG. However, since the basic configuration of this embodiment is the same as that of the first embodiment, the same reference numerals are given to the common portions and the description thereof will be omitted, and only the features that are the features of the present embodiment will be described.

In the present embodiment, a portable wireless terminal (for example, a PHS (Personal Haas) has a function of measuring its own position and a function of transmitting at least its own position information by radio waves.
provided with a terminal) C _1, C ₂ of ndyphone System), 1.9 is transmitted from the wireless terminal C _1, C ₂ [GH
The characteristic feature is that the base unit A includes an antenna ATx for receiving a radio signal in the z] band and a signal receiving circuit unit 8 for processing a signal received by the antenna ATx.

Here, the radio terminals C ₁ and C ₂ in the present embodiment have an antenna 30a as shown in FIG.
A PHS transmitting and receiving unit 30 for transmitting and receiving various kinds of information using radio signals in the 1.9 [GHz] band similarly to a conventionally known PHS terminal, and a plurality of GPs received by a GPS antenna 31a.
A GPS receiving unit 31 that performs a calculation based on a radio signal from the S satellite S to obtain a three-dimensional or two-dimensional position of the receiving position, and a GPS receiving unit 31 that controls each of the above-described units using a CPU as a main component. A terminal control unit 32 for transmitting the obtained position information (hereinafter referred to as “terminal position information”) to the base unit A by the radio signal.

On the other hand, the signal receiving circuit unit 8 of the master unit A
Demodulates a radio signal received by the antenna ATx, extracts the terminal position information, and outputs the terminal position information signal to the control circuit unit 7 and the image output circuit unit 3.

Next, the operation of the configuration which is a feature of this embodiment will be described.

As described above, the output from the signal receiving circuit 8 is
The received terminal location information signal is transmitted to the control circuit unit 7 and the image output circuit unit.
3 and the control circuit unit 7 uses the terminal position information
The corresponding map information is read out in the storage unit 5 and the image is read.
The output circuit 3 outputs the map information signal. Image output
In the power circuit section 3, each wireless terminal obtained from the position information
C ₁, C_TwoThe current position of the current location obtained from the map information
It is displayed on the display unit 4 in such a manner as to be superimposed on the map around the device. Obedience
Therefore, the screen 4a of the display unit 4 is displayed as shown in FIG.
Wireless terminal C₁, C_TwoPosition on the map corresponding to the current location of
Since the locations Pc1 and Pc2 are displayed, the wireless terminal C₁, C_Twoof
The terminal location information is displayed on the display unit 4 of the main unit A together with the map information.
Wireless terminal C₁, C_TwoLocation management,
For example, portable wireless terminal C₁, C_TwoThe mobile for children and the elderly
Let the parent machine A manage the position (man location management)
Will increase added value and increase operating efficiency.
Can be improved. Note that the sound between the intercom slave unit B and the master unit A is
Even if voice and image signals are communicated wirelessly
good.

(Embodiment 3) FIG. 6 shows a system configuration of this embodiment, and FIG. 5 shows a schematic configuration of a master unit. However, since the basic configuration of this embodiment is the same as that of the first embodiment, the same reference numerals are given to the common portions and the description thereof will be omitted, and only the features that are the features of the present embodiment will be described.

In this embodiment, the master unit A has a network access unit 9 for accessing a network NW constructed indoors or outdoors, and the control circuit unit 7 uses the network access unit 9 to control the network NW.
The feature is that the map information acquired through W is stored in the storage unit 5.

The network access unit 9 receives (downloads) map information from the terminal D by communicating with the terminal D in the external network NW through, for example, a public telephone line. It has a function like a modified modem or a terminal adapter compatible with ISDN. Note that such a function can be realized by using a conventionally known technique, and a detailed description thereof will be omitted.

On the other hand, the map information downloaded by the network access unit 9 is stored in a storage medium in the storage unit 5. Here, the storage medium may be any writable medium, and various storage media such as a so-called CD-R, MO, and hard disk are conceivable.

Next, the operation of the configuration which is a feature of this embodiment will be described.

The control circuit unit 7 controls the network access unit 9 to download the map information from the network, stores the map information in the storage medium in the storage unit 5, and controls the GPS unit.
The map information corresponding to the position information calculated by the receiving unit 6 is read in the storage unit 5 and output to the image output circuit unit 3 as a map information signal. The image output circuit unit 3 displays the current position of the master unit A obtained from the position information on the display unit 4 so as to be superimposed on the surrounding map of the current position obtained from the map information.

In this embodiment, the storage unit 5
Because the map information downloaded from the network is stored in the storage medium, there is an advantage that the latest map information can always be easily obtained and the value of environmental information can be increased (Embodiment 4). 8) The system configuration of this embodiment is shown in FIG. 8, and the schematic configuration is shown in FIG. However, since the basic configuration of the present embodiment is the same as that of the second embodiment, the common components are denoted by the same reference numerals, and description thereof will be omitted. Only the features that are the features of the present embodiment will be described.

In the present embodiment, the microphones 33 and the speakers 34 are provided in the wireless terminals C ₁ and C ₂ , and the PHS transceiver 30 transmits and receives audio signals by radio signals.
The base station A demodulates the radio signal received by the antenna ATx and outputs the terminal position information signals of the wireless terminals C ₁ and C ₂ to the control circuit section 7 and the image output circuit section 3, and outputs the audio input section 1. The antenna ATx modulates an audio signal, transmits a 1.9 GHz band radio signal from the antenna ATx to the wireless terminals C ₁ and C ₂ , and demodulates and extracts the radio signal received by the antenna ATx. It is characterized in that it has a signal transmission / reception circuit unit 10 that outputs an audio signal to the audio output unit 2. Since the above-mentioned communication function in the PHS transmission / reception unit 30 of each of the wireless terminals C ₁ and C ₂ can be realized by using a conventionally known technique, a detailed description will be omitted.

Thus, in the present embodiment, there is an advantage that communication by calling between the master unit A and the wireless terminals C ₁ and C ₂ can be performed, thereby increasing the added value and improving the operation efficiency. is there.

(Embodiment 5) FIG. 10 shows a system configuration of this embodiment, and FIG. 9 shows a schematic configuration thereof. However, since the basic configuration of this embodiment is common to that of the fourth embodiment,
The common portions are denoted by the same reference numerals, and description thereof will be omitted. Only the features that are characteristic of the present embodiment will be described.

In this embodiment, the radio terminals C ₁ and C ₂ are demodulated and extracted from the radio signal received by the antenna ATx.
The terminal position information signal of the control circuit 7 and the image output circuit 3
, And modulates the audio signal output from the audio input unit 1 to transmit a 1.9 GHz band radio signal from the antenna ATx to the wireless terminals C ₁ and C ₂ and receive the radio signal received by the antenna ATx. A demodulated signal is output to an audio output unit 2 to output an audio signal, and the map information read from the storage unit 5 and the terminal position information of the wireless terminals C ₁ and C ₂ are converted into the radio signal. The master unit A is provided with a signal transmission / reception circuit unit 10 'for transmitting from the antenna ATx.

[0050] The radio terminal C _1, C ₂ is provided with a display unit 35 such as LCD, map the terminal control unit 32, the current position of each radio terminal C _1, C ₂ obtained from the terminal location information The information is displayed on the display unit 35 by being superimposed on a peripheral map of the current position obtained from the information. Therefore, the screen W of the display unit 35
As shown in FIG. 10C, each of the wireless terminals C ₁ and C ₂
The current positions Pc1 and Pc2 are displayed. In addition,
Whether to display the terminal position information and the map information on the display unit 35 of the wireless terminals C ₁ and C ₂ can be arbitrarily selected, and the received information is provided in the wireless terminals C ₁ and C ₂ . By storing it in the memory, it is possible to display it at any time as needed.

[0051] According to this embodiment, the map information is obtained corresponding to the terminal position information in a wireless terminal C _1, C _2, for example, the screen of the wireless terminal C _1, the display unit 35 of the C ₂ It can be used by displaying terminal position information and map information on W, and has the advantage that the added value is increased and the operation efficiency can be improved.

(Embodiment 6) FIG. 11 shows a system configuration of this embodiment, and FIG. 12 shows a schematic configuration thereof. However,
Since the basic configuration of the present embodiment is the same as that of the first embodiment, common parts are denoted by the same reference numerals, and description thereof will be omitted. Only the features that are characteristic of the present embodiment will be described.

In the present embodiment, the GPS receiver 6
, The door phone slave unit B as shown in FIG.
In that a GPS antenna 26a and a GPS receiving unit 26 are provided. Note that, as shown in FIG. 11, the GPS antenna 26a is provided integrally with the body of the door phone slave unit B.

The GPS receiver 26 has a conventionally well-known configuration, and decodes a satellite navigation message obtained based on radio signals from a plurality of GPS satellites S received by the GPS antenna 26a by spectrum despreading to perform positioning calculation. Then, the current reception position, that is, the position (position information) of the intercom slave unit B is calculated. The position information is transmitted from the audio input circuit 22b by the slave unit control unit 25 through the signal line Ls to the master unit A.
Is superimposed on the audio signal transmitted to the base unit A and sent to the master unit A.

On the other hand, in master unit A, the position information superimposed on the sound signal is extracted by sound output circuit 2b, and the position information is input to control circuit unit 7 and image output circuit unit 3. Then, the control circuit unit 7 causes the storage unit 5 to read the map information corresponding to the position information, and causes the image output circuit unit 3 to output the map information as a map information signal. The image output circuit unit 3 displays the current position of the intercom slave unit B obtained from the position information on the display unit 4 so as to be superimposed on the surrounding map of the current position obtained from the map information. Therefore, the display unit 4
, The current position of the doorphone handset B, that is, the position P on the map corresponding to the current address of the house H is displayed, so that environmental information around the house H can be easily obtained, and By obtaining useful information, the added value of the door phone system can be increased, and the operation efficiency can be improved by using the door phone system as described above even when there is no visitor. In addition, since the GPS receiver 26 having the GPS antenna 26a is provided in the intercom sub-unit B installed outdoors, the GPS receiver 26 is installed at the same time when the intercom sub-unit B is installed.
There is an advantage that the antenna 26a can be installed outdoors and the construction is simplified.

(Embodiment 7) FIG. 13 shows a system configuration of this embodiment, and FIG. 14 shows a schematic configuration thereof. However,
Since the basic configuration of this embodiment is the same as that of the second embodiment, common parts are denoted by the same reference numerals, and description thereof will be omitted. Only the features that are characteristic of this embodiment will be described.

In this embodiment, the master unit A has the antenna ATx
And an antenna 27a for receiving a radio signal transmitted from the wireless terminal C, and a signal receiving circuit 27 for processing a signal received by the antenna 27a, as shown in FIG. Is provided on the intercom slave unit B. As shown in FIG. 13, the antenna 27a is provided integrally with the body of the intercom slave unit B.

The signal receiving circuit 27 demodulates the radio signal received by the antenna 27a and extracts the terminal position information sent from the wireless terminal C. This terminal location information
The slave unit control unit 25 sends the signal line L from the voice input circuit 22b.
s is superimposed on the audio signal transmitted to master unit A through s and sent to master unit A.

On the other hand, in master unit A, terminal position information superimposed on the audio signal is extracted by audio output circuit 2b, and the terminal position information is input to control circuit unit 7 and image output circuit unit 3. . Then, the control circuit unit 7 causes the storage unit 5 to read the map information corresponding to the terminal position information and causes the image output circuit unit 3 to output the map information signal.
The image output circuit unit 3 displays the current position of the wireless terminal C obtained from the terminal position information on the display unit 4 so as to be superimposed on the surrounding map of the current position obtained from the map information. Therefore, the position P on the map corresponding to the current position of the wireless terminal C is displayed on the screen 4a of the display unit 4.

According to this embodiment, as in the second embodiment, the portable wireless terminals C ₁ and C ₂ are carried by a child or an elderly person, and the parent device A manages the position (man location management).
Is performed, the added value is increased, the operation efficiency can be improved, and the signal receiving circuit unit 2 having the antenna 27a
7 is provided in the doorphone slave unit B installed outdoors, so that the radio signal from the wireless terminal C can be easily received, and the antenna 27a can be installed outdoors at the same time as the installation of the doorphone slave unit B. There is an advantage that the construction is simplified. Note that, similarly to the fourth embodiment, the radio terminal C demodulated and extracted from the radio signal received by the antenna 27a.
The terminal position information is output to the control circuit unit 7 and the image output circuit unit 3, and the audio signal output from the audio input unit 1 is modulated to transmit a 1.9 [GHz] radio wave signal from the antenna 27a to the wireless terminal. A signal transmitting and receiving circuit unit (not shown) for transmitting to the device C and demodulating a radio signal received by the antenna 27a and outputting an audio signal extracted to the audio output unit 23
Is provided to the intercom slave unit B,
, A call between the master unit A and the wireless terminal C may be enabled.

(Eighth Embodiment) FIG. 15 shows a system configuration of this embodiment. However, since the basic configuration of this embodiment is the same as that of the seventh embodiment, the common components are denoted by the same reference numerals, and the description thereof will be omitted. Only the features that are the features of the present embodiment will be described.

In this embodiment, when the intercom slave unit B cannot receive a radio signal from the wireless terminal C, a signal (hereinafter, referred to as an “alarm signal”) from the intercom slave unit B is transmitted as an audio signal. The control circuit 7 of the base unit A controls the audio output circuit 2b based on the alarm signal extracted by the audio output circuit 2b, and transmits the alarm sound from the speaker 2a. For example, a characteristic feature is that a sound such as “Pee, Pee” is caused to sound.

That is, when a child or an elderly person carrying the radio terminal C goes out of a remote place outside the radio signal reception area of the intercom slave B, the parent or child is notified of the fact. The family can be notified by the alarm sound from the machine A. The alarm sound may be sounded from a loudspeaker 2a for hands-free conversation provided in the base unit A, or a ringing speaker when the base unit A has a handset. What should be done is to be sounded from.

(Embodiment 9) FIG. 16 shows a schematic configuration of this embodiment. However, since the basic configuration of this embodiment is the same as that of the seventh embodiment, the common components are denoted by the same reference numerals, and the description thereof will be omitted. Only the features that are the features of the present embodiment will be described.

In the present embodiment, the signal transmission / reception unit 27 'of the intercom slave B periodically issues a start command for starting the radio terminal C by a radio signal, and the PHS of the radio terminal C is transmitted.
When the transmission / reception unit 30 receives the radio signal, other components such as the terminal control unit 32 and the GPS reception unit 31 are activated, and after the activation, the PHS transmission / reception unit 30 transmits a start start notification command to notify the start of the activation by the radio signal. Is returned to the intercom slave unit B. Note that the radio signal of the start command is transmitted at a weak output level such that the reception area is within a radius of 3 to 4 m centered on the intercom slave B.

Next, the operation of the characteristic portion of this embodiment will be described.

First, when the radio terminal C is indoors, the output level of the radio signal periodically emitted from the signal transmission / reception unit 27 'of the intercom slave B is weak.
The radio signal cannot be received by the indoor wireless terminal C, and the other components (GPS) except the PHS transceiver 30
The receiving unit 31 and the terminal control unit 32) are in a stopped state (standby state). That is, if the wireless terminal C is indoors, there is no need to send the terminal position information to the master A,
In such a situation, the PHS transceiver 30 of the wireless terminal C
By putting the other components except for in the standby state, power consumption can be suppressed and unnecessary consumption of the battery as the power supply can be prevented.

On the other hand, when the person carrying the wireless terminal C leaves the entrance and enters the reception area of the radio signal, the PHS transmission / reception unit 30 of the radio terminal C receives the radio signal and waits according to the start command. The GPS receiving unit 31 and the terminal control unit 32 are activated. Further, after the start-up, the PHS transceiver 30 of the wireless terminal C returns a start-up start notification command to notify the start of the start-up by a radio signal to the intercom slave unit B. It is in a state of waiting for terminal position information from the wireless terminal C. Here, by receiving the start start notification command returned from the wireless terminal C by the intercom slave B, the person carrying the wireless terminal C (such as a child or an elderly person) in the intercom slave B passes through the entrance. That is, it can be detected that the user has gone out. When the intercom slave B receives the activation start notification command from the wireless terminal C, a signal to that effect (hereinafter, referred to as a “passage detection signal”) is superimposed on the audio signal from the intercom slave B. Then, based on the passage detection signal extracted by the audio output circuit 2b, the control circuit unit 7 of the parent device A controls the audio output circuit 2b to transmit a notification sound from the speaker 2a (for example, , A beeping sound) can inform the family that a person (child or old man) carrying the wireless terminal C has gone outdoors.

Further, the slave unit control unit 25 of the door phone slave unit B
Is transmitted to the base station A by superimposing an alarm signal on the audio signal only when the radio signal from the wireless terminal C in which the passage is detected cannot be received, and the wireless terminal C in which the passage is not detected. When the radio signal from the GW cannot be received, the warning signal is not transmitted. That is,
If a radio signal from the wireless terminal C carried by the person at home cannot be received for any reason, it is possible to prevent an unnecessary alarm from being issued (false alarm).

When the person carrying the radio terminal C returns home and passes near the intercom B, the radio signal periodically emitted from the intercom B is transmitted to the P of the radio terminal C.
When the HS transmission / reception unit 30 receives the start command, the terminal control unit 32, which has received the start command, transmits a standby start notification command from the GPS transmission / reception unit 30 to notify the transition to the standby state to the intercom slave unit B by a radio signal, and thereafter Then, the terminal control unit 32 and the GPS receiving unit 31 enter a standby state. And
By receiving the standby start notification command returned from the wireless terminal C by the intercom slave B, that the person carrying the wireless terminal C (such as a child or an elderly person) has passed through the entrance at the intercom slave B; That is, it can be detected that the user has returned home.

(Embodiment 10) FIG. 17 shows a schematic configuration of this embodiment. However, since the basic configuration of the present embodiment is common to the sixth and ninth embodiments, the common components are denoted by the same reference numerals, and description thereof will be omitted. Only the features that are the features of the present embodiment will be described. explain.

In the present embodiment, the GPS receiver 26 and the G
It is characterized in that a PS antenna 26a is provided, and data of the current time obtained by the GPS receiving unit 26 is superimposed on an audio signal together with a passage detection signal and transmitted to the master unit A.

Thus, the slave unit control unit 25 of the door phone slave unit B
When the signal transmission / reception unit 27 'receives the start start notification command from the wireless terminal C, the data of the current time obtained by the GPS reception unit 26 at that time is superimposed on the audio signal together with the passage detection signal. Transmit to master unit A. On the other hand, in the base unit A, the control circuit unit 7 of the base unit A controls the sound output circuit 2b based on the passage detection signal extracted by the sound output circuit 2b to make the speaker 2a emit a notification sound. This informs the family that a person (child or elderly person) who has carried the wireless terminal C has gone outdoors, and stores the current time data extracted by the audio output circuit 2b as the passing time of the wireless terminal C. Stored in section 5.

Using the data of the current time obtained by the GPS receiver 26 in this way, it is possible to know the exact time at which the passage of the wireless terminal C by the master unit A has been detected. Can be improved.
Note that the current time data obtained by the GPS receiving unit 31 is transmitted from the wireless terminal C together with the activation start notification command,
The current time data transmitted from the wireless terminal C may be transmitted to the master A as the passing time.

(Embodiment 11) FIG. 18 shows a system configuration of this embodiment. In the present embodiment, a door phone slave unit B 'installed at an outdoor entrance or the like, and a master unit installed indoors connected to the door phone slave unit B' via a two-wire signal line La such as a twisted pair wire. A ′, a sub-master D connected indoors with a master A ′ via a two-wire signal line Lb such as a twisted pair line, and one or more wireless terminals described in the second embodiment. C.

As shown in FIG. 21, the intercom slave unit B 'is a TV camera 4 comprising a CCD camera or the like for imaging a visitor.
0, a camera circuit unit 41 that processes an output signal of the TV camera 40 to obtain an image signal and FM-modulates the image signal, and a master unit A ′ including a microphone and a speaker.
And a loudspeaker unit 42 for making a loudspeaker call with the sub master unit D.
And an FM-modulated image signal output from the camera circuit unit 41 and an audio signal output from the loudspeaker unit 4 are multiplexed as a baseband signal and transmitted to the signal line La, and the master unit A is transmitted through the signal line La. 'Interface section 4 for outputting the voice signal transmitted from'
3, a call button 44 operated by a visitor, and an antenna 45 for receiving a radio signal transmitted from the wireless terminal C.
a, a signal receiving unit 45 for demodulating this radio signal to extract terminal position information of the wireless terminal C, a slave unit control unit 46 having a CPU as a main component and controlling the above units, and a signal line La. A power supply circuit section 47 is provided to take out the superposed power supply voltage and create the operation electric wires of the respective sections.

As shown in FIG. 19, master unit A 'includes an image separation circuit unit 50 for separating an image signal from a signal transmitted from doorphone slave unit B' through signal line La, and a separated image signal. A demodulation circuit 51 for performing FM demodulation, an image display unit 52 for displaying an image captured by the TV camera 40 of the intercom slave unit B ′ based on the image signal subjected to FM demodulation,
Doorphone slave unit B 'including a microphone and a speaker
And a loudspeaker unit 53 for making a loudspeaker call with the sub master unit D
A sub-base unit interface unit 54 for transmitting a signal transmitted from the intercom slave unit B 'through the signal line La and a voice signal output from the loudspeaker unit 53 to the sub-base unit D through the signal line Lb; Power supply circuit 55a and power supply circuit 55 for generating power supply from
a main unit comprising a doorphone slave unit interface unit 55 having a power supply multiplexing circuit 55b for multiplexing a power supply voltage output from a into a signal (audio signal) transmitted to the doorphone slave unit B 'through the signal line La; A master unit control unit 56 that controls the above units as elements is provided.

On the other hand, as shown in FIG. 20, the sub master unit D includes an image separation circuit unit 60 for separating an image signal from a signal sent from the master unit A 'through the signal line Lb, and an FM signal for the separated image signal. A demodulation circuit 61 for demodulation, an image display unit 62 for displaying an image picked up by the TV camera 40 of the intercom slave unit B 'based on the image signal demodulated by FM, and a intercom slave unit B including a microphone and a speaker. And a voice communication unit 63 for performing a voice communication with the base unit A ', and a signal transmitted from the base unit A' via the signal line Lb and a voice signal output from the voice communication unit 63 An interface unit 64 for transmitting the map information from the storage medium to the parent device A 'via the line Lb, a storage unit 65 for reading out the map information from the storage medium and outputting the map information to the image display unit 62, and a CPU as a main component to control the above-mentioned units And a sub-master unit control section 66.
Here, the storage unit 65 reads out map information stored in a storage medium such as a CD-ROM and outputs the map information to the image display unit 62 as a map information signal. However, the storage medium is not limited to the CD-ROM, and various other storage media can be applied.

Next, the operation of this embodiment will be described.

First, when the call button 44 of the intercom slave unit B 'is operated by the visitor, the slave unit control unit 46 transmits a calling signal from the interface unit 43 via the signal line La. In base unit A ', a calling signal transmitted via signal line La is processed in loudspeaker unit 42, and a calling sound is emitted from a speaker. The calling signal is also transmitted from the sub-base unit interface unit 54 to the sub-base unit D via the signal line Lb, and the sub-base unit D also makes a ringing tone. When the family member answers the ringing tone at the base unit A ', the base unit control unit 56 controls the loudspeaker unit 53 to communicate with the loudspeaker unit 42 of the intercom unit B' via the signal line La. Make calls possible. Simultaneously with the operation of the call button 44, the TV camera 40 of the intercom slave unit B 'is activated to image the visitor, and the image is transmitted from the camera circuit unit 41 to the master unit A' via the signal line La. Then, an image of the visitor is displayed on the image display unit 52 of the parent device A '. Alternatively, if the family member answers with the sub-master unit D, a call is made between the loudspeaker unit 63 of the sub-master unit D and the loudspeaker unit 42 of the intercom slave unit B 'in the same manner as in the case of the base unit A'. At the same time, an image of the visitor is displayed on the image display unit 62 of the sub master unit D. In this way, communication by call with the visitor and security for the visitor by the image of the TV camera can be realized in common with the conventional example. Further, extension calls can be made between the master unit A 'and the sub master unit D by the loudspeaker units 53 and 63.
Since the intercom system having such a configuration is conventionally known, further detailed description of the basic operation will be omitted.

Next, an operation which is a feature of the present embodiment will be described. As described in the second embodiment, the terminal position information is transmitted from the wireless terminal C as a radio signal, and the signal receiving unit 45 of the intercom slave unit B ′ demodulates the radio signal received by the antenna 45a, and The terminal location information sent from the terminal C is extracted. The terminal position information is multiplexed with the audio signal and the image signal by the slave unit control unit 46 at the interface unit 43 and transmitted to the master unit A 'through the signal line La. The data is transmitted to the sub master unit D via the communication terminal 54. Secondary master unit D
In, the terminal position information is extracted by the image separation circuit unit 60, and this terminal position information is input to the sub-base unit control unit 66 and the image display unit 62. Then, the sub-base unit control unit 66 causes the storage unit 65 to read the map information corresponding to the terminal position information, and outputs the map information to the image display unit 62 as a map information signal. The image display unit 62 superimposes and displays the current position of the wireless terminal C obtained from the terminal position information on the surrounding map of the current position obtained from the map information. Therefore,
On the screen of the image display unit 62, a position on the map corresponding to the current position of the wireless terminal C is displayed.

According to the present embodiment, as in the second embodiment, the portable wireless terminal C is carried by a child or an elderly person, and position management (man location management) is performed by the auxiliary master device D. The added value can be increased and the operating efficiency can be improved. In addition, since the secondary master unit D is not directly connected to the intercom slave unit B 'but is connected to the master unit A', it is possible to check the map information and the terminal position information of the wireless terminal C at an arbitrary location indoors. There is an advantage that it can be performed in. Note that, similarly to the seventh embodiment, the current position of the wireless terminal C may also be displayed on the image display unit 52 of the parent device A 'so as to be superimposed on a peripheral map of the current position obtained from the map information.
Further, each function of the master unit A as described in the first to fifth embodiments may be provided to the sub master unit D.

[0083]

According to the first aspect of the present invention, there is provided a door phone handset which is provided at an outdoor entrance or the like and is provided with a handset calling means for making a call with the master through a signal line and an imaging means for picking up an image of a visitor. Master communication means for making a call with the intercom slave unit through the signal line, display means for displaying an image taken by the imaging means of the intercom slave unit and transmitted through the signal line, storage means for storing map information, A main unit disposed indoors, comprising a control unit for controlling the main unit communication unit to perform a call with the intercom slave unit and controlling the display unit to display a captured image of the imaging unit; A GPS antenna for receiving a radio wave; and position measuring means for measuring a reception position based on a radio signal received by the GPS antenna. The control means of the master unit transmits the position information measured by the position measuring means together with the map information. Display hand , The communication with the visitor and the security for the visitor can be realized in the same manner as before, and the map information and the position information (the arrangement position of the master unit, that is, the location of the house) are displayed on the display means of the master unit. By being displayed together, environmental information around the house can be easily obtained, and useful information for living can be obtained to increase added value, and to be used even when there is no visitor. Thus, there is an effect that the operation efficiency can be improved.

According to the second aspect of the invention, since the position measuring means is provided in the master unit, the same effect as that of the first aspect of the invention can be obtained.

According to the third aspect of the present invention, the GPS antenna and the position measuring means are provided in the intercom slave unit.
There is an effect that the antenna can be installed outdoors and the construction is simplified.

According to a fourth aspect of the present invention, there is provided one or more portable wireless terminals having a function of measuring own position and a function of transmitting at least one's own position information by radio waves, and transmitting radio waves from the radio terminals. An antenna for a wireless terminal to receive;
Position information acquisition means for acquiring position information of the wireless terminal from a radio signal received by the antenna for the wireless terminal, and the control means of the master unit maps the position information of the wireless terminal acquired by the position information acquisition means to a map. Since the information is displayed on the display means together with the information, the position information of the wireless terminal is displayed on the display means of the parent device together with the map information in addition to the effect of the invention of claim 1 or 2, so that the wireless terminal can be displayed. Position management can be performed. For example, by carrying a portable wireless terminal to a child or an elderly person and performing position management (man location management) by a master device, there is an effect that added value is increased and operation efficiency can be improved.

According to a fifth aspect of the present invention, since the antenna for the wireless terminal and the position information acquiring means are provided in the master unit,
The same effect as that of the invention is achieved.

According to a sixth aspect of the present invention, an antenna for a wireless terminal and a position information acquiring means are provided in the intercom slave unit, and the position information of the wireless terminal acquired by the position information acquiring means is transmitted to the master through a signal line. Therefore, in addition to the effect of the invention of claim 4, in addition to the provision of the antenna for the wireless terminal in the door phone handset placed outdoors, there is an effect that radio waves from the wireless terminal can be easily received.

According to a seventh aspect of the present invention, a master unit has access means for accessing a network constructed indoors or outdoors, and the control means stores map information acquired through the network by the access means in the storage means. Therefore, in addition to the effect of any one of the first to sixth aspects of the present invention, there is an effect that the latest map information can always be easily obtained and the value of environmental information can be increased.

The invention according to claim 8 is characterized in that the master unit has wireless communication means for transmitting and receiving at least a voice signal to and from the wireless terminal via the antenna for the wireless terminal. In addition to the effects of any of the aspects of the invention, communication by communication between the master unit and the wireless terminal unit becomes possible, thereby increasing the added value and improving the operation efficiency.

According to the ninth aspect of the present invention, the control means of the master unit transmits map information corresponding to at least the position information of the wireless terminal obtained by the position information obtaining means to the wireless terminal by the wireless communication means. In addition to the effects of any one of claims 4 to 8, in the wireless terminal, map information corresponding to the position information can be obtained, for example, by displaying the position information and the map information on a display means. This has the effect of increasing added value and improving operating efficiency.

The invention according to claim 10 is provided with an alarm means for issuing an alarm when a radio wave transmitted from the wireless terminal cannot be received by the antenna for the wireless terminal.
In addition to the effects of the invention of any one of the ninth aspect, there is an effect that a family member can be notified that a person carrying the wireless terminal has gone far beyond the reception range of radio waves from the wireless terminal.

According to the eleventh aspect of the present invention, a passage detecting means for detecting the passage of the wireless terminal is provided in the intercom slave unit, and the alarm means detects the passage of the wireless terminal by the passage detecting means and detects the passage of the wireless terminal. An alarm is issued when radio waves transmitted from the wireless terminal cannot be received by the antenna for the wireless terminal in the absence of the person carrying the wireless terminal. Even if the person carrying the device is at home, it is possible to reduce the false alarm of the alarm means caused by the inability to receive the radio wave from the wireless terminal for some reason.

According to a twelfth aspect of the present invention, there is provided a door phone slave unit having pass detection means for detecting the passage of the wireless terminal, and passing display means for displaying that the passage of the wireless terminal has been detected by the passage detection means. Since it is provided in the base unit, in addition to the effects of any one of claims 4 to 10, the effect that it is possible to notify a home person that a person carrying the wireless terminal has gone outdoors is at home. is there.

According to a thirteenth aspect of the present invention, there is provided a passage detecting means for detecting passage of a wireless terminal, and a start command transmission for transmitting a start instruction by a radio signal to the wireless terminal detected by the passage detecting means. Means are provided in the intercom slave unit, and the wireless terminal stops the function of measuring its own position and at least the function of transmitting its own position information by radio wave until receiving a start instruction by a radio signal, Item 4-
In addition to the effects of the invention of any one of the twelve aspects, while the wireless terminal is indoors and has not received a start command, the function of measuring its own position and at least the function of transmitting its own position information by radio waves are stopped. This has the effect of preventing unnecessary power consumption in the wireless terminal.

According to the fourteenth aspect of the present invention, when the wireless terminal receives a start instruction by a radio signal, the information on the current time contained in the radio signal from the GPS satellite is stored in the storage means of the base unit. In addition to the effect of the thirteenth aspect, there is the effect that the master device can know the exact passing time of the wireless terminal.

[0097] The invention according to claim 15 is a door phone slave unit provided with an image pickup means for taking a picture of a visitor and arranged at an outdoor entrance or the like, comprising: A main unit communication means for making a call with the intercom slave unit through the signal line, a display means for displaying an image taken by the imaging unit of the intercom unit and transmitted through the signal line; And a control unit that controls the display unit to display the captured image of the image capturing unit, and performs a call between the parent unit disposed indoors and the intercom slave unit via the parent unit by a signal line. The secondary master unit communication means, the display unit for displaying an image taken by the imaging unit of the intercom slave unit and transmitted through the master unit by a signal line, the storage unit for storing map information, and the secondary master unit communication unit are controlled. Doorphone child through the parent machine And a sub-master placed indoors with control means for controlling the display means to display the captured image of the imaging means, a function of measuring the position of the self, and at least the position information of the self One or more portable wireless terminals having a function of transmitting by radio waves, a radio terminal antenna for receiving radio waves from the radio terminal, and a radio terminal based on a radio signal received by the radio terminal antenna. A position information acquisition unit for acquiring position information, and the control unit of the sub-base unit displays the position information of the wireless terminal acquired by the position information acquisition unit on the display unit together with the map information, so that it is the same as the conventional one. In addition to ensuring communication with and security for visitors,
The location information of the wireless terminal can be managed by displaying the map information and the position information of the wireless terminal together on the display means of the secondary master unit, for example, by carrying a portable wireless terminal to a child or an elderly person. By performing location management (man location management) using the secondary master unit, added value can be increased and operating efficiency can be improved. In addition, the secondary master unit is connected directly to the master unit without being directly connected to the intercom slave unit. Therefore, there is an effect that confirmation of the map information and the position information of the wireless terminal can be performed at an arbitrary place indoors.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a first embodiment.

FIG. 2 is a system configuration diagram of the above system.

FIG. 3 is a schematic configuration diagram of a second embodiment.

FIG. 4 is a system configuration diagram of the above system.

FIG. 5 is a schematic configuration diagram of a third embodiment.

FIG. 6 is a system configuration diagram of the above system.

FIG. 7 is a schematic configuration diagram of a fourth embodiment.

FIG. 8 is a system configuration diagram of the above system.

FIG. 9 is a schematic configuration diagram of a fifth embodiment.

FIG. 10 is a system configuration diagram of the above system.

FIG. 11 is a system configuration diagram of a sixth embodiment.

FIG. 12 is a schematic configuration diagram of the intercom slave unit in Embodiment 1;

FIG. 13 is a system configuration diagram of a seventh embodiment.

FIG. 14 is a schematic configuration diagram of the intercom slave unit in Embodiment 1;

FIG. 15 is a system configuration diagram of an eighth embodiment.

FIG. 16 is a schematic configuration diagram of a door phone handset and a wireless terminal according to a ninth embodiment.

FIG. 17 is a schematic configuration diagram of a door phone handset and a wireless terminal according to a tenth embodiment.

FIG. 18 is a system configuration diagram of an eleventh embodiment.

FIG. 19 is a schematic configuration diagram of a parent device in the above energy management system;

FIG. 20 is a schematic configuration diagram of a sub master unit in the above embodiment.

FIG. 21 is a schematic configuration diagram of the intercom slave unit in Embodiment 1;

[Explanation of symbols]

 A Master unit B Door phone slave unit 1 Audio input unit 2 Audio output unit 3 Image output circuit unit 4 Display unit 5 Storage unit 6 GPS receiving unit 7 Control circuit unit

Claims (15)

[Claims] 1. An intercom slave unit provided with an intercom unit for communicating with a base unit through a signal line, an imaging unit for imaging a visitor, and arranged at an outdoor entrance or the like, and an intercom unit through a signal line. A main unit communication unit for making a call with the device, a display unit for displaying an image taken by the imaging unit of the intercom slave unit and transmitted through a signal line, a storage unit for storing map information, and a main unit communication unit. A main unit which is provided indoors and has control means for making a call with the intercom slave unit and controlling the display means to display an image picked up by the image pickup means;
A GPS antenna for receiving a radio wave from a satellite; and a position measurement unit for measuring a reception position based on a radio signal received by the GPS antenna. The control unit of the base unit transmits the position information measured by the position measurement unit. A door phone system characterized by being displayed on display means together with map information. 2. The intercom system according to claim 1, wherein the position measuring means is provided in the master unit. 3. The intercom system according to claim 1, wherein the GPS antenna and the position measuring means are provided in the intercom slave unit. 4. One or more portable wireless terminals having a function of measuring own position and a function of transmitting at least own position information by radio waves, and a radio terminal receiving radio waves from the radio terminals Antenna, and position information acquisition means for acquiring position information of the wireless terminal from the radio signal received by the antenna for the wireless terminal, the control means of the base unit,
4. The intercom system according to claim 1, wherein the position information of the wireless terminal obtained by the position information obtaining means is displayed on the display means together with the map information. 5. The intercom system according to claim 4, wherein an antenna for a wireless terminal and a position information acquiring means are provided in the parent device. 6. An antenna for a wireless terminal and a position information obtaining means are provided in a door phone slave unit, and the position information of the wireless terminal obtained by the position information obtaining means is transmitted to a base unit through a signal line. The door phone system according to claim 4, wherein 7. A base unit having access means for accessing a network constructed indoors or outdoors, and wherein the control means stores map information acquired through the network by the access means in a storage means. The doorphone system according to any one of claims 1 to 6, wherein: 8. The wireless communication device according to claim 4, wherein the master unit includes a wireless communication unit that transmits and receives at least a voice signal to and from the wireless terminal via the antenna for the wireless terminal.
The intercom system according to any one of the above. 9. The control unit of the master unit transmits map information corresponding to at least the position information of the wireless terminal obtained by the position information obtaining unit to the wireless terminal by the wireless communication unit. Item 9. The door phone system according to any one of Items 4 to 8. 10. The intercom system according to claim 4, further comprising alarm means for issuing an alarm when radio waves transmitted from the wireless terminal cannot be received by the antenna for the wireless terminal. . 11. A door phone slave unit is provided with a passage detecting means for detecting passage of a wireless terminal, and an alarm means is present when a passage of the wireless terminal is detected by the passage detecting means and no person carrying the wireless terminal is present. 11. The intercom system according to claim 10, wherein an alarm is issued when radio waves transmitted from the wireless terminal cannot be received by the antenna for the wireless terminal under the above conditions. 12. A door phone slave unit is provided with passage detection means for detecting passage of a wireless terminal, and passage display means for indicating that passage of a wireless terminal is detected by the passage detection means is provided on a base unit. 4. The method according to claim 1, wherein
0. 13. A door phone comprising: a passage detecting means for detecting passage of a wireless terminal; and a start instruction transmitting means for transmitting a start instruction by a radio signal to the wireless terminal whose passage has been detected by the passage detecting means. 5. The wireless terminal device according to claim 4, wherein the wireless terminal device stops its function of measuring its own position and at least the function of transmitting its own position information by radio wave until receiving a start command by a radio signal. The intercom system according to any one of claims 12 to 12. 14. The wireless terminal device according to claim 1, wherein information on the current time contained in the radio signal from the GPS satellite is stored in the storage means of the base unit when the radio terminal receives the activation command by the radio signal. 14. The door phone system according to item 13. 15. An intercom unit provided with an intercom unit for communicating with a base unit via a signal line, an intercom unit provided with an imaging unit for taking an image of a visitor, and placed at an outdoor entrance or the like, and an intercom unit through a signal line. A main unit communication means for making a call with the device, a display means for displaying an image taken by the imaging means of the intercom slave unit and an image transmitted through the signal line, and a communication with the intercom slave unit by controlling the communication means; A main unit which is provided indoors and includes a control unit for controlling the display unit to display a captured image of the imaging unit; Display means for displaying an image taken by the image pickup means of the intercom slave unit and transmitted through the master unit by a signal line; storage means for storing map information; Make a call with the intercom handset via A sub-parent device that is disposed indoors and includes a control unit that controls a display unit to display a captured image of the imaging unit; One or more portable wireless terminals, a wireless terminal antenna for receiving a radio wave from the wireless terminal, and a position for acquiring position information of the wireless terminal from a radio signal received by the wireless terminal antenna Information acquisition means, and the control means of the sub master unit comprises:
A door phone system characterized by displaying the position information of the wireless terminal obtained by the position information obtaining means on the display means together with the map information.