KR20160011492A - Converter For Video Phone Is Equipped Exit And Entrance Control System - Google Patents

Abstract

The present invention relates to a system for controlling the exit and entrance with a converter for a video phone. The present invention provides a system for controlling the exit and entrance with a converter for a video phone, which comprises: a video phone for an individual house installed in each household which includes an individual entrance camera, a first terminal for connection connected to the individual entrance camera, and, a second terminal for connection connected to a converter; a common use unit for an apartment house, which is driven through a common power supply unit and which is made to be able to transmit and receive voice, video, and data to and from the converter; the converter driven by receiving the power supply of the individual entrance camera applied through the video phone for the individual house, which transmits the signals transmitted from the common use unit for an apartment house to the video phone for the individual house; and, a wiring system which includes an individual wiring system for connecting the converter and multiple video phones for an apartment house and a common wiring system for connecting the converter and the common use unit for an apartment house.

Description

[0001] The present invention relates to an access control system having a converter for a video phone,

The present invention relates to an access control system equipped with a converter for video phones. More specifically, it is possible to utilize both a residential video phone with various designs and price points and a security-enhanced residential system with a common gate control function, thereby providing consumers with an individual residential video camera The present invention relates to an access control system having a converter for a videophone capable of selecting a phone and improving the security function of a videophone for an individual residence having a weak security state.

Generally, a video phone is classified as a videophone for a residential use installed in a private residence and a videophone for a residential use installed in a residential complex including a villa, an apartment, and a residential complex.

The videophones used in private homes are single-family homes. One videophone can be equipped with a videophone according to functions, and a plurality of individual entrance cameras can be interlocked. , And can easily install a product desired by the consumer.

However, since the videophones for individual houses are relatively inadequately controlled in access control and access, they are vulnerable to security problems, and products with stronger weaknesses are being developed. It is not universal.

In addition, the videophone for the apartment house has a security system that is more secure than a video phone for a single-family residence because it can control a common entrance door and interlock with a security room or a management room by interlocking a camera installed in a common entrance door and a separate entrance camera.

However, since the videophones for apartment buildings are already equipped with the system when selling apartment buildings, users can not select video phones or cameras in the household as they want, and can not select products that can replace them in case of failure or product discontinuation There are disadvantages.

Meanwhile, in the case of a small apartment building such as a general villa, a common entrance door has been formed. However, since the common entrance is always kept open and the control is not smoothly performed, In the case of villas newly built in recent years, it is possible to choose from various designs.

In other words, consumers have different choice of products because their individual thoughts are different from each other, and their preferences are different from each other's favorite functions or designs. However, current private residential videophones give up some security for price and design. There is a problem that the price or the design must be abandoned for the security of the videophone for the apartment house.

Particularly, there is a common entrance door camera that can connect a videophone for an individual residence to a commercially available video phone for a residential use and a camera system installed at a common entrance door. However, such a common entrance door camera is very limited in its kind, There is a problem that generalization can not be achieved.

This kind of product group has a problem that the wiring is difficult and the function of the common entrance camera is limited because the wiring is individually connected to the common camera in each generation.

In addition, in the current access control system of apartments and residential complexes, various terminals are connected to each other through a number of wires, and terminals for households (video phones, etc.) and security service terminals And the common entrance terminal are connected to each other by a bus type piping / wiring. In such a case, excessive construction cost is incurred, resources are wasted, and construction period is prolonged.

(Patent Document 1) Korean Patent Publication No. 2009-0091007

(Patent Document 2) Korean Patent Publication No. 2004-0012024

In order to solve the above problems, the present invention has been made in view of the above-mentioned background, and it is an object of the present invention to provide a videophone for an individual residence having various designs and price ranges, It is an object of the present invention to provide a converter for a videophone capable of selecting a videophone for an individual residence having various designs and prices of a videophone for an individual residence and improving the security function of the videophone for an individual residence having a weak security state .

In addition, the present invention utilizes the advantage of a converter capable of expanding to several tens of units, so that a converter and a videophone for residential use are connected to each other by individual wiring, and the converter and the common entrance camera are connected by common wiring, The present invention aims to provide a converter for a video phone which can shorten the installation time by convenient construction and reduce the labor cost to reduce the burden on various selection and installation costs for the consumer who purchases the product by selling or installing the product. have.

In addition, the present invention has a purpose of allowing a consumer to select a common entrance door camera and a security door interphone having various designs and functions using a converter for a videophone, and to install and purchase the same.

According to an aspect of the present invention, there is provided an access control system including a converter for a videophone, the access control system comprising: Terminal and a second connection terminal connected to the converter; A public housing unit driven by a common power supply unit and configured to be capable of transmitting and receiving voice, video, and data with the converter; A converter for receiving and driving the power of an individual entrance camera applied through the videophone for the individual residence and transmitting signals transmitted from the common unit for the residence to the videophone for the residence; An individual wiring system for connecting the converter and a plurality of videophones for individual houses, and a wiring system comprising a common wiring system for connecting the converter and the common unit for apartment homes.

According to an embodiment of the present invention, the converter includes a connection unit including a terminal and a socket so that the video phone for an individual residence, the converter, and the common unit for a residential home are connected to transmit and receive data. A first switch for turning on / off the supply of audio and video signals input from the common housing unit common unit, and a second switch for turning on / off the audio and video signals transmitted through the second connection terminal 4 line of the individual residential videophone A switch comprising a second switch; A common power source conversion unit for supplying power necessary for operating the video conversion, transmission circuit, audio circuit, and the like; and a control unit And a video signal converter for converting the video signal into a video signal and transmitting the converted video signal to a second switch; A door open signal detecting unit for opening / closing an automatic door by a voltage change of a voice signal line of the second connection terminal of the videophone for individual residence; And a camera power output detecting unit for detecting a power supply signal from the camera power output detecting unit. A call use detection circuit for detecting whether a voice signal line of a common wiring connected to the common use unit is in use; A data signal analyzing unit for analyzing input / output data signals, voice and image signals from the public housing common unit; A CPU for controlling the components of the converter to interoperate with the video phone for a residential use and the common unit for a residential home when the data analyzed by the data signal analysis unit is transmitted; And a signal generator for generating a voice signal or a guidance message according to the situation under the control of the CPU.

In addition, according to an embodiment of the present invention, the CPU controls the call use detection circuit so that when a common voice signal line configured in the common wiring is in use, when the use request is made in another household, the current common voice signal line is in use And the like.

In addition, according to an embodiment of the present invention, when the video signal for long distance transmission using the UTP wiring is converted into the video signal outputted from the separate entrance camera, And outputting it to the video phone.

According to an embodiment of the present invention, when a data signal is input from the common use unit for the apartment, the converter selects one of four lines of the second connection terminal of the videophone of an individual residence corresponding to the data signal, And a video phone for an individual residence is called through a signal line.

In addition, according to an embodiment of the present invention, the converter receives only the power required for the standby state through the common wiring system, supplies power to the video transmission and communication circuit from the videophone for individual residence upon driving, And the power supply device is capable of operating a plurality of converters.

Further, according to an embodiment of the present invention, the individual wiring system is composed of two wires or four wires, and the common wiring system is an eight wire system.

According to the embodiment of the present invention, it is possible to utilize both a videophone for an individual residence having various designs and price ranges, and a system for a residential home with security enhanced by a door entrance control function.

Further, according to the embodiment of the present invention, there is an effect that a consumer can select a videophone for an individual residence having various designs and prices of individual videophones.

In addition, according to the embodiment of the present invention, the security function of the videophone for an individual residence having a weak security state can be improved.

In addition, according to the embodiment of the present invention, by utilizing the advantage of a converter capable of expanding to tens of units, a converter and a videophone for an individual residence are connected by individual wiring, and the converter and the common entrance camera are connected by common wiring, It is possible to reduce the installation time by the convenient construction as well as to reduce the installation time.

In addition, according to the embodiment of the present invention, it is possible to reduce the burden on various selection and installation costs for the consumer who reduces the construction time and labor cost of the video phone and sells or installs the installer.

In addition, according to the embodiment of the present invention, there is an effect that a common entrance camera having various designs and functions using a converter for a videophone and a guard room interphone can be installed and purchased by a consumer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram schematically showing an access control system equipped with a converter for a videophone according to an embodiment of the present invention;
2 is a block diagram illustrating a state in which an access control system having a converter for a videophone according to an embodiment of the present invention is installed;
3 is a block diagram illustrating a converter for a videophone according to an embodiment of the present invention;
4 is a circuit block diagram illustrating a converter for a videophone according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

FIG. 1 is a block diagram schematically showing an access control system equipped with a converter for a videophone according to an embodiment of the present invention. FIG. 2 is a view illustrating a state in which an access control system equipped with a converter for a video phone is installed according to an embodiment of the present invention. FIG. 3 is a block diagram showing a converter for a videophone according to an embodiment of the present invention, and FIG. 4 is a circuit block diagram showing a converter for a videophone according to an embodiment of the present invention.

As shown in the figure, the access control system of the present invention includes a videophone 100 for an individual residence, a wiring system 200, a converter 400, and a common unit 300 for a residential complex.

The videophone 100 for each household is installed for each household, and the wiring connected to the camera is four lines. The four lines are composed of a voice call signal line, a camera power supply line, a GND (ground), and a camera video signal line.

The videophone 100 for an individual residence is connected to the individual entrance camera 120 through four lines, and is connected to the converter 400 through four lines through the individual wiring system 210.

That is, the videophone 100 for an individual residence comprises a plurality of connection terminals for connecting two separate entrance cameras 120, the first connection terminal being connected to the individual entrance camera 120, 2 connection terminal is connected to the converter 400. [

For example, if four generations are occupied in one layer, the individual entrance camera 120 and the videophone 100 for an individual residence, which are respectively installed in the fourth generation, are connected by a first connection terminal made up of four lines And the videophone 100 for an individual residence is connected by the four lines of the converter 400 and the second connection terminal in the corresponding layer.

The wiring system 200 includes an individual wiring system 210 for connecting the video phone 100 and the converter 400 to each other and a common wiring system 220 for connecting the converter 400 and the common unit 300 for common use. Lt; / RTI >

The individual wiring system 210 connects the video phone 100 for individual residence and the converter 400 by connecting the converter 400 and the video phone 100 for an individual residence separately, .

The common wiring system 220 connects the plurality of converters 400 or performs voice and video communication and data communication with the interphone of the public hall camera or the security room for the apartment building constituting the common unit 300 for the apartment house So that a predetermined power source can be supplied.

Since the common wiring system 220 requires a separate power source for the converter 400 to operate, a predetermined power source line is further provided. This is because the converter 400 is installed on the basis of the condition of each converter 400 Use it when the power supply can not be connected.

Thus, the common wiring system 220 of the present invention is composed of two lines of power source, two lines of video signal, two lines of data communication, and two lines of voice signal, all of which can be wired by a UTP cable.

That is, the common wiring system 220 of the present invention is configured to use common 8-wire wiring between the common entrance camera or the guard room interphone and the converter 400, and the individual wiring system 210 is configured to use the converter 400, And four separate lines or two separate lines between the phones 100 are used.

Also, in order to improve smooth operation due to voltage reduction and current shortage, when the distance between the power supply device and the converter 400 becomes long, the power supply of the converter 400 of the co- And supplies a voltage about 1.5 to 2 times higher than the voltage used in the time converter 400.

At this time, it is preferable that the converter 400 operates only a circuit that can communicate internally with the common entrance camera or the guard room interphone, and minimizes the consumption current during standby.

The public housing common unit 300 is configured to be able to control an automatic door common to a common entrance camera installed at a door of a public space, and to interlock with an interphone installed in a security room or a management room.

The public housing common unit 300 is driven through a common power supply unit and is configured to be able to transmit and receive voice, video, and data to and from the converter 400.

The converter 400 links the videophone 100 for an individual residence and the common unit 300 for a residential house and includes a connection unit 410, a switch 420, a conversion unit 430, a signal sensing unit 440, A call use detecting circuit 450, a data signal analyzing unit 460, a CPU 470, and a signal generating unit 480.

The connection unit 410 is connected to the public housing unit 300 via the terminal 412 connected to the second connection terminal of the videophone 100 for individual residence and the common wiring system 220 via the individual wiring system 210 And a socket 414 connected thereto.

The connection unit 410 may be configured to transmit and receive input / output-related call data signals to and from the second connection terminal and the common use unit 300 of the videophone 100 for an individual residence, voice and video signal transmission / And supplies power necessary for driving the videophone 100 for an individual residence, the common unit 300 for a residential house, and the converter 400.

The switch 420 includes a first switch 422 for turning on and off the audio and video signals inputted from the common housing unit 300 according to the control of the CPU 470 and a second switch 422 for turning on / When the supply of the power from the second connection terminal is applied, the audio and video signals transmitted from the common unit 300 for common use under the control of the CPU 470 are transmitted to the second connection terminal of the videophone 100 And a second switch 424 for on / off to turn on / off the switch.

The converting unit 430 includes a main power converting unit 432, a common power converting unit 434, and a video signal converting unit 436.

When power is supplied from the second connection terminal of the videophone 100 for an individual residence as in the case where a predetermined power is supplied in accordance with the driving signal of the individual door camera 120, To the signal sensing unit 440 and the call use sensing circuit 450 so that the converter 400 is driven.

That is, the converter 400 of the present invention receives power from a second connection terminal of the videophone 100 for an individual residence, and the power is converted by the main power conversion unit 432 into the signal detection unit 440 and the call use So that the sensing circuit 450 is driven.

Therefore, the present invention is minimally supplied through the common wiring system 220 only to the extent that the power supplied to the converters 400 can be maintained in the standby state, and all the operations are performed for the second connection of the videophone 100 Since the power is supplied from the terminals and supplied to the image transmission and communication circuit, it is possible to operate the plurality of converters 400 with a single power supply unit configured in the common wiring, and to minimize the power required for driving the converter 400 .

The common power source conversion unit 434 is a component for supplying power necessary for operating the common entrance camera, the converter 400, the converter 400, the video conversion and transmission circuit of the video phone 100 for an individual residence, , And a predetermined power is supplied through the common wiring system 220.

The video signal converting unit 436 converts the video signal inputted from the common use unit 300 and transmits the converted video signal to the second switch 424 so that the video information of the common use unit 300 is transmitted to the video signal of the individual residential video phone 100 ).

The video signal converting unit 436 transmits the video signal transmitted by the ON operation of the first switch 422 to the second switch 424 and simultaneously transmits the video signal through the signal generating unit 480 And informs the public apartment unit 300 and the individual residential video phone 100 of the signal to be announced.

The signal sensing unit 440 includes a camera power output sensing unit 444 and a door opening signal sensing unit 442.

The camera power output detection unit 444 calls a specific household in the public apartment unit 300 and the converter 400 managing the specific household corresponding to the call calls the second connection And the first switch 422 is turned on at the same time. And outputs a constant voltage to a terminal corresponding to the power supply line among the second connection terminal 4 line of the videophone 100 for an individual residence which has been called, and the camera power output detection unit 444 senses this signal.

When the camera power output detection unit 444 detects a signal, the CPU 470 generates data indicating that the household has been normally called in the public apartment unit 300 and activates the second switch 424 in the ON state So that the video phone 100 for an individual residence can view the video and make a call.

The door open signal detection unit 442 detects the door opening signal of the video phone 100 for the second connection of the videophone 100 for an individual residence when a door open operation (using a button or a specific menu) is performed during communication with the public- When a specific voltage is supplied to the audio signal line among the four lines of the terminal, it senses this and transmits data on the automatic door opening connected to the common use unit 300 for the automatic door opening operation.

In other words, when call signal data transmitted from the public apartment unit 300 for a residential house to the video phone 100 for an individual residence is inputted, the call signal data transmitted from the residential video phone 100 to the public apartment unit 300 connected to the converter 400 Power is supplied to the power supply line out of the four lines of the second connection terminal of the videophone 100 of the residential home to confirm the video information of the common entrance camera and the second switch 424 is turned on via the power supply signal As voice signals are transmitted and received, a voice call is made with a user who wants to input and output.

At this time, when the voltage variation of the audio signal line formed in the individual wiring system 210 occurs, the door open signal sensing unit 442 senses the voltage change and opens the automatic door.

For example, in order to open the door of the common entrance after the call, the door opening signal is transmitted to the second connection terminal of the videophone 100 for the residence, and the converter 400 transmits the door opening signal to the second connection terminal And transmits the signal to the CPU 470. In the CPU 470, the transmitted signal is transmitted to the common unit 300 for a common house having the common entrance camera so as to control the door of the common entrance camera.

The camera power output detection unit 444 senses the power supplied from the power supply line among the four wires of the second connection terminal of the videophone 100 for an individual residence and transmits the detected power to the CPU 470, A voice communication, and a door opening circuit of the common use unit 300 configured in the home.

When the camera power output detecting unit 444 sends a paging signal to the videophone 100 for individual residence from the public housing unit 300 for the residential home, the corresponding unit corresponding to the paging signal is called by the converter 400, If power is not supplied to the power supply line among the four lines of the second connection terminal of the videophone 100 for an individual residence configured in the called household, it is determined that there is no such generation, and the camera power output detection unit 444 To the CPU 470 to drive the signal generating unit 480 to send a generation call failure or error data to the common entrance hall camera provided in the public housing unit 300 for communicating the present situation to a person calling from the common entrance do.

Here, the signal generating unit 480 generates a predetermined signal from the voice signal or the guidance message according to the control of the CPU and outputs the alarm signal to the videophone 100 and the apartment unit sharing unit 300 Function.

The call use detection circuit 450 detects whether a voice signal line of a common wiring connected to the common use unit 300 is in use or not by calling the guard room in the video phone 100 for an individual residence or monitoring the video of the common entrance camera The signal generation unit 480 detects whether or not the common voice signal line configured in the common wiring system 220 is used, and if the power is supplied to the power supply line among the four lines of the second connection terminal, And transmits the signal to the videophone 100 for an individual residence. If the signal is not in use, the controller can call a guard room constituting the common unit 300 for the apartment complex or monitor the common entrance camera image.

At this time, the converter 400 connects the voice signal of the guard room interphone and the voice signal line of the videophone 100 for an individual residence, so that the call is made.

The data signal analyzing unit 460 analyzes the signals input and output from the common use unit 300 and outputs the analyzed signals to the common use unit 300 ) And the unique signal of the videophone 100 for an individual residence, and transmits the signal to the CPU 470. [

When the data analyzed by the data signal analyzing unit 460 is transmitted to the CPU 470, the CPU 470 calls the video phone 100 for an individual residence through the second connection terminal of the video phone 100 for an individual residence, And controls each component of the converter 400 so that power is supplied to the power supply line among the four lines of the second connection terminal of the video phone 100. [

That is, the CPU 470 of the present invention determines whether power is supplied through the second connection terminal of the videophone 100 according to the analyzed data in the data signal analysis unit 460 and controls the power.

The CPU 470 of the present invention controls the door open signal sensing unit 442 so that the automatic door can be opened and closed and the camera power output sensing unit 444 is controlled, Voice call, door opening circuit, etc.

In addition, the CPU 470 of the present invention controls the call use detection circuit 450 so that when the common voice signal line configured in the common wiring is in use, when the use request is made in another household, In order to be able to know that it is.

In the present invention, when a data signal for calling a specific household is input through the common entrance camera of the public housing unit 300, the data signal is transmitted to all installed converters 400 for each household, and each converter 400 Analyzes the transmitted data by the data signal analyzing unit 460 and analyzes the transmitted data by using the audio signal line among four lines of the second connection terminal of the videophone 100 for an individual residence corresponding to the data signal to be called, Calls the residential video phone 100.

At this time, it is recognized that the videophone 100 for an individual residence is called by the camera connected to the second connection terminal. In order to check the image of the camera connected to the second connection terminal, And the power supply line is supplied to the power supply line among the terminal 4 lines.

When power is supplied to the power supply line among the second connection terminals 4 of the videophone 100 for an individual residence, the camera power output detection unit 444 of the converter 400 recognizes the same and outputs it to the common use unit 300 Transmits the data that the videophone 100 for an individual residence has been normally received, and drives the switch 420 to be in the ON state so that image confirmation and voice communication can be performed.

In the common entrance camera, the video signal inputted from the CCD or CMOS module is converted into a video signal for long distance transmission using the UTP wiring and transmitted to the converter 400.

At this time, the converter 400 converts the long-distance transmission video signal transmitted from the common entrance camera into the same video signal as that output from the individual entrance camera 120 through the video signal conversion unit 436, 100 to the video line among the four lines of the second connection terminal.

According to the embodiment of the present invention, both the videophone 100 for an individual residence having a variety of designs and price points and the system 300 for a co-residential house with enhanced security can be utilized, It is possible to select the videophone 100 for an individual residence having various designs and prices of the videophone 100 and improve the security function of the videophone 100 for an individual residence having a weak security state, The converters 400 and the individual residential videophones 100 are connected to each other by the individual wiring using the advantage of the expandable converter 400 and the converter 400 and the common entrance camera are connected using the common wiring, And it is an invention that can shorten installation time by convenient construction.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. And all terms including technical and scientific terms are to be construed in a manner generally known to one of ordinary skill in the art to which this invention belongs, It has the same meaning as understood.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Video phone for individual use 120: Individual entrance camera
200: Wiring system
210; Individual wiring system 220: Joint wiring system
300: Common part for apartment house 400: Converter
410: connection part 420: switch
430: conversion unit 440: signal detection unit
450: call use detection circuit 460: data signal analysis unit
470: CPU 480: Signal generator

Claims (7)

An access control system having a converter for a videophone,
A videophone for an individual residence which is provided for each household and has a separate entrance camera, a first connection terminal connected to the separate entrance camera and a second connection terminal connected to the converter;
A public housing unit driven by a common power supply unit and configured to be capable of transmitting and receiving voice, video, and data with the converter;
A converter for receiving and driving the power of an individual entrance camera applied through the videophone for the individual residence and transmitting signals transmitted from the common unit for the residence to the videophone for the residence;
A wiring system comprising a separate wiring system for connecting the converter and a plurality of videophones for individual houses, and a common wiring system for connecting the converter and the common unit for a cottage;
And an access control system including a converter for a videophone.
The method according to claim 1,
The converter
A connection unit including a terminal and a socket so that data is transmitted and received by connecting the video phone for an individual residence, the converter, and the common unit for a residential house;
A first switch for turning on / off the supply of audio and video signals input from the common housing unit common unit, and a second switch for turning on / off audio and video signals transmitted through the second connection terminal 4 line of the individual- A second switch connected to the first switch;
A main power conversion unit for receiving a predetermined power from the videophone for individual residence and driving the converter, a common power conversion unit for supplying power necessary for operating the video conversion, transmission circuit, audio circuit and the like, And a video signal converting unit for converting the input video signal and transmitting the converted video signal to the second switch;
A door open signal detecting unit for opening and closing the automatic door by a voltage change of the audio signal line of the second connecting terminal of the video phone for individual residence; And a camera power output detecting unit for detecting a power supply signal from the camera power output detecting unit.
A call use detection circuit for detecting whether a voice signal line of a common wiring connected to the common use unit is in use;
A data signal analyzing unit for analyzing input / output data signals, voice and image signals from the public housing common unit;
A CPU for controlling the components of the converter to interoperate with the video phone for a residential use and the common unit for a residential home when the data analyzed by the data signal analysis unit is transmitted; And
According to the control of the CPU, a voice signal or a signal generating unit
And an access control system including a converter for a videophone.
3. The method of claim 2,
Wherein the CPU controls the call use detection circuit so that when a common voice signal line configured in the common wiring is being used, when the use request is made in another household, the CPU can notify that the common voice signal line is in use Access control system with converter for phone.
3. The method of claim 2,
The video signal conversion unit
Wherein the video signal is converted into a video signal for long-distance transmission using the UTP wiring in the common unit for common use, and the video signal is converted into the same video signal as that output from the individual entrance camera, Access control system with converter for phone.
The method according to claim 1,
When the data signal is input from the common use unit for the house, the converter calls the individual videophone via the voice signal line among the four lines of the second connection terminal of the videophone for an individual residence corresponding to the data signal A system for access control comprising a converter for a video phone.
The method according to claim 1,
The converter is supplied with only the necessary power in a waiting state through the common wiring system and is supplied with power from the videophone for individual residence when driving and supplies the power to the video transmission and communication circuit to operate a plurality of converters with one power supply device Wherein the access control system comprises a converter for a video phone.
The method according to claim 1,
Wherein the individual wiring system is composed of two wires or four wires, and the common wiring system is an eight wire system.

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