RU2668417C1 - Video telephone system of a two-wire type implemented with the opportunity to open the door with the help of intercom - Google Patents

Abstract

FIELD: means of communication.SUBSTANCE: invention relates to a video telephone system of a two-wire type. Video telephone system of a two-wire type contains: a door opening voltage controller, installed at the front end of the first connector to which the communication link is connected in the videophone, and which is designed with possibility to output a control power when the polarity of the control power is changed, which is outputted on the first connector, to the reverse of the state in which the call signal is transmitted and received by the communication link, and the state in which the door lock is open; first switching element connected between the second connector, with which the communication link in the intercom is connected, and the load controlling the operation of the intercom system, for supplying the control voltage to the intercom when it is turned on in operation by means of control supply, received from the videophone during transmission and reception of a call signal; third connector installed in the intercom and connected to the second connector via internal wiring connection, connected in parallel to a two-wire communication line; second switching element connected between the third connection connector and the door lock to apply the opening voltage of the door lock when it is turned on by means of the control power, received from the videophone when the door lock is opened; wherein the door lock is further connected to the output side of the second switching element.EFFECT: technical result is a wider range of equipment.4 cl, 6 dwg

Description

FIELD OF THE INVENTION

The invention relates to a video-telephone system in which a video-telephone and an intercom are connected to each other via a two-wire communication line, and, in particular, to a two-wire-type video-telephone system configured to open a door using an intercom in which a two-wire communication line connected to a video-telephone and intercom, passes so as to directly connect the intercom and door lock as a control line, while control power is selectively supplied to the intercom and door lock via a control line, connected door intercom and door lock, thus ensuring the opening of the door lock.

State of the art

Typically, a video telephone system that is part of a home network system is widely used in a home automation device or the like, and is widely used as a means for exchanging various information in addition to making a call and a phone call between a visitor and a tenant (or homeowner).

In the video telephone system of the prior art, a video telephone, mainly installed in the house, and a doorphone installed externally at the entrance to the house are connected by a two-wire communication line or a four-wire communication line.

In the case of a two-wire connection, the two-wire communication line consists of a power line for supplying power to the intercom and a communication line for outputting an image and calling from the intercom, the control line connected to the door lock connected via a separate two-wire control line for the door lock, further provided in videophone.

For this reason, the door lock operates in such a way that when the door open button on the video telephone is pressed, the control line for supplying control power to the door lock is connected to the video telephone, while the control power for opening the door is supplied to the door lock via the control line.

This principle of operation entails problems associated with the fact that the control line must connect the door lock installed at the entrance to the house and the video phone installed in the house. In this case, an additional wired connection should be provided for supplying power from a separately located power source.

In FIG. 1 shows a prior art wiring diagram of a video telephone system requiring an additional wired connection.

According to the wiring diagram of FIG. 1, the intercom 2 is connected to the video phone 1, and the door lock 3 is connected to the door opening connector of the video phone 1 via a separate control line 5.

In this wired connection method, when the door open button is pressed in the video telephone 1, a separate control power supply 4 installed next to the video telephone 1 supplies power to the door lock 3 via a contact in the video telephone 1, thereby opening the door.

A door lock 3 is installed at the entrance to the house, therefore, there is a problem that the control line 5 must be additionally connected from the entrance to the house with a videophone 1 or with a separate power supply 4.

In FIG. 2 shows another type of wiring diagram of a video telephone system that is known in the art and in which a door lock 8 is connected to a door opener 7 of a door opener.

In this wired connection method, when the door open button is pressed on the videophone 6, a separate control power source 9 installed next to the videophone 6 supplies power to the door lock 8 through a contact in the videophone 7, thereby opening the door.

The problem of the wiring diagram of the video telephone system shown in FIG. 2, that, since the door lock 8 and the intercom 7 are installed at the entrance to the house, between the control power supply 9 and the door lock 8, an additional separate control line 9a is needed connecting the door lock and the control power source 9, if the control source 9 power supply for powering the door lock installed in the house.

Disclosure of the invention

Technical problem

An object of the present invention is to disclose a two-wire type videophone system configured to open a door using an intercom, moreover, in a two-wire type videophone system in which a videophone and intercom are connected to each other by two wires, two wire conductors connecting the videophone and intercom pass so as to directly connect to the door lock as a control line, while the control power for opening the door lock can be supplied via the control line to ryamuyu connecting intercom and door lock.

The technical objectives of the present invention are not limited to the aforementioned technical tasks, while for a person skilled in the art from the following description, other technical tasks not mentioned will be clear.

Technical solution

The present invention generally relates to a two-wire type video telephone system configured to open a door using a doorphone, in which a video phone installed in the house and a doorphone installed at the entrance to the house are connected to each other via a two-wire communication line, wherein The two-wire type video telephone system comprises: a door opening voltage controller mounted on a front end of a first connector to which a communication line is connected in the video telephone and configured to to issue control power when polarity of the control power supplied to the first connector is reversed between the state in which the call signal is transmitted and received by the communication line and the state in which the door lock is open; the first switching element connected between the second connector to which the communication line in the intercom is connected and the load controlling the intercom operation to supply control voltage to the intercom when it is turned on by the control power received from the videophone when transmitting and receiving a call signal; a third connector installed in the intercom and connected to the second connector through an internal wire connection made parallel to the two-wire communication line; a second switching element connected between the third connector and the door lock for supplying a voltage for opening the door lock when turned on by the control power received from the video phone when the door lock is opened; wherein the door lock is further connected to the output side of the second switching element.

The door opening voltage controller may comprise a relay comprising a pair of relay switches, in which respective common connectors are connected to various connectors of the first connector, and a control power source connected to a normally open (NO) contact in one relay switch and connected to a normally closed (NC) ) a contact in another relay switch from said pair of relay switches, for issuing a control power when the polarity of the control power issued to the first connector, depending on the state of the contacts of the pair of relay switches.

The first and second switching elements may be diodes.

Beneficial effects

In accordance with the present invention, two cores of wires connected to the intercom and video phone exit the intercom for direct connection to the door lock as a control line, so there is no need for an additional wire connection of the control line to supply control power to the door lock. As a result, the length of the wire connection is reduced, which thus increases the ease of installation.

In addition, the videophone has a controller for supplying power to the intercom and the door lock, this controller is configured to control the supply of control power to the intercom via a communication line between the videophone and the intercom when the videophone performs a call function with the intercom and supply control power to the door the lock when you press the button to open the door in the video phone. Thus, there is no need for an additional wire connection for supplying control power to the door lock, which reduces manufacturing costs.

Brief Description of the Drawings

In FIG. 1 shows an example wiring diagram of a video telephone system in accordance with the prior art.

In FIG. 2 shows another example wiring diagram of a video telephone system in accordance with the prior art.

In FIG. 3 shows a wiring diagram of a two-wire type video telephone system in accordance with the present invention.

In FIG. 4 is a schematic diagram of a video telephone of a two-wire type video telephone system in accordance with the present invention.

In FIG. 5 shows a connection diagram of signal lines of an intercom of a two-wire type video telephone system in accordance with the present invention.

In FIG. 6 illustrates the principle by which the power supply line selectively supplies control power depending on the operation of the door opening voltage controller of FIG. four.

The implementation of the invention

Next, with reference to the accompanying drawings, preferred embodiments of the present invention are described in detail. The terms and wording used in the present description and in the claims should not be taken in the limited typical values or vocabulary definitions - they should be understood as having meanings and concepts from the field of technology of the present invention, based on the rule according to which the inventor can appropriately define the concept of the term for the purpose of describing the present invention in the best way.

Thus, the configurations described in the embodiments of the present invention and shown in the drawings are the most preferred embodiments, but do not completely represent the technical nature of the present invention. Thus, it should be understood that there may be various equivalents and modifications to replace those at the time of filing this application.

As shown in FIG. 3-6, a two-wire type video telephone system in accordance with the present invention includes a video telephone 100, an intercom 200, and a door lock 300.

The videophone 100 is connected to the second connector 27 of the intercom 200 via a two-wire communication line through the first connector 18.

Thus, a voice call between the videophone 100 and the intercom 200 can be carried out via a communication line.

In addition, the videophone 100 receives an image captured by a camera unit 20 located in the intercom 200 via a two-wire communication line.

As for the image signal and the voice signal transmitted from the intercom 200 and received by the first connector, the image signal is displayed by the image unit 10 after demodulation in the demodulation unit 11 through the door opening voltage controller 17, while the voice signal passes through the filter unit 16, and then amplified in the speaker amplification unit 15 and is output by the speaker 14.

In addition, the voice of the tenant introduced through the microphone 12 of the videophone 100 is amplified in the microphone amplification unit 13, passes through the filter unit 16 and the door opening voltage controller 17, and is transmitted to the intercom 200 through the first connector 18.

In addition, the door opening voltage controller 17 comprises a direct current (DC) control power supply 30 supplying power for controlling an intercom 200 and a door lock 300, and a relay 31 selectively reversing the polarity of the voltage exiting the direct current control power supply 30 to a first connection connector 18.

The relay 31 comprises a pair of relay switches, wherein the positive electrode of the control power supply 30 is connected to a normally open contact (NO contact) in one relay and to a normally closed contact (NC contact) in another relay from said pair of relay switches. In said pair of relay switches, the NC contact and the NO contact, to which the positive electrode is not connected, are grounded.

The coil component can be connected to a contact that connects when the videophone 100 and the intercom 200 make a telephone call from said relay switch contacts grounded as described above to prevent the grounding of the AC component, which is the call signal.

As described above, the second connector 27 of the intercom 200 is connected to the first connector 18 of the videophone 100 via a two-wire communication line to enable voice and image transmission using the videophone 100.

The image captured by the camera unit 20 is modulated in the modulation unit 21 and transmitted to the videophone 100 to the second connector 27 via a two-wire communication line.

In addition, the visitor’s voice inputted through the microphone 22 of the intercom 200 is amplified in the microphone amplification unit 23, passes through the noise removal filter unit 26, and transmitted to the video telephone 100 to the second connector 27 via a two-wire communication line.

A door lock 300 is connected to a third connector 28, which, in turn, is connected in parallel with a second connector 27 in the intercom 200.

The second connector 27 is connected to the first connector 18 of the video telephone 100 via a two-wire communication line, as described above.

Thus, control power can be supplied to the door lock 300 via a two-wire communication line connected directly between the videophone 100 and the intercom 200 without a separate wired connection to the videophone 100 for supplying control power.

According to the wiring diagram, control can be carried out in such a way that control power is selectively supplied to the intercom 200 or door lock 300 due to the operation of the door opening voltage controller 17 located in the video telephone 100. For this purpose, a diode 34 is used as a switching element, connected to a power line to supply power to the loads controlling the operation of the intercom 200, into a second connector 27 of the intercom 200. In this case, the diode 36 used as a switching element is connected to a power line connected to power supply for opening the door lock 300 to the third connector 28. The switching elements are selected due to the operation of the relay 31 and are selectively actuated depending on the polarity of the power exiting th connector 18.

Next, with reference to FIG. 6, the operation process of the door opener voltage controller 17 for supplying power to the door lock 300 and the intercom 200 connected to the videophone 100 is described.

By pressing the call button in the videophone 100, the videophone 100 and the intercom 200 are connected to each other in a state in which the call function can be performed.

In particular, when the videophone 100 performs the call function, the control power supply of the control power supply 30 supplied to the videophone 100 is supplied to the first connector 18 via a normally closed contact of the relay 31 (lower relay switch in Fig. 6), while the control power supplied from the first connector 18, passes through the second connector 27 to control the first diode 34, thereby supplying control power to the power supply 30 to the load 35 of the intercom 200.

In this case, the load 35 may be a power supply unit providing control power to the camera unit 20, modulation unit 21, microphone 22, microphone gain unit 23, speaker 24, speaker gain unit 25 and filter unit 26 located in the intercom 200.

Thus, the image signal captured by the camera unit 20 is transmitted via a two-wire communication line through a second connector 27, and the voice signal of a microphone 22 and a speaker 24 is also transmitted through a two-wire communication channel through a second connector 27.

Moreover, when the tenant of the house presses the door open button located in the videophone 100, the videophone 100 and the intercom 300 are connected to each other to perform the function of opening the door.

That is, if the door open button is pressed in the video telephone 100, then the relay 31 in the door open voltage controller 17 is actuated to open the NC contact and the NO contact of the relay 31, thereby producing a voltage reversed with respect to the voltage used when making the call to the first connector 18.

Accordingly, the second diode 36 conducts a positive voltage of the control power supply 30 supplied through an NO contact operating in the relay 31 so that the control power of the control power supply 30 is supplied to the third connector 28 after passing through the first connector 18 in series, the second connecting a connector 27 and a conductive diode 36, while the control power supply of the control power supply 30 supplied to the third connector 28 is supplied to the door lock 300 in as the voltage of opening the door, thus ensuring the opening of the door lock 300.

Industrial applicability

The present invention relates to a video-telephone system in which a video-telephone and an intercom are connected to each other via a two-wire communication line, and can be used in the field of technology related to a two-wire-type video-telephone system configured to open a door using a doorphone that can open a door lock by selectively supplying control power to the intercom and door lock through a control line connecting the intercom and the door lock.

Reference List

10 image block

11 demodulation unit

12, 22 microphone

13, 23 microphone amplification unit

14, 24 speaker

15, 25 speaker amplification unit

16, 26 filter unit

17 door opener voltage controller

18 first connector

20 camera unit

21 modulation block

27 second connector

28 third connector

30 power supply

35 load

100 videophone

200 intercom

300 door lock

Claims (8)

1. A two-wire video telephone system configured to open a door using a doorphone, in which a video telephone installed in the house and a doorphone installed at the entrance to the house are connected to each other by a two-wire communication line, wherein the video-telephone system of the two-wire type comprises: a door opening voltage controller mounted on the front end of the first connector to which the communication line is connected in the video telephone and configured to provide control power when the polarity of the control power supplied to the first connector is reversed between the state in which the call signal is transmitted and is accepted by the link, and the state in which the door lock is open; the first switching element connected between the second connector to which the communication line in the intercom is connected and the load controlling the operation of the intercom, for supplying control voltage to the intercom when it is turned on by the control power received from the videophone when transmitting and receiving a call signal; a third connector installed in the intercom and connected to the second connector via an internal wire connection connected in parallel to the two-wire communication line; and a second switching element connected between the third connector and the door lock for supplying the opening voltage of the door lock when turned on by the control power received from the video phone when the door lock is opened. 2. The two-wire video system of claim 1, wherein the door lock is further connected to the output side of the second switching element. 3. The two-wire video telephone system according to claim 1 or 2, wherein the door opening voltage controller comprises a relay including a pair of relay switches in which respective common connectors are connected to various connectors of the first connecting connector, and a control power source connected to normal open contact in one relay switch and connected to a normally closed contact in another relay switch from the specified pair of relay switches, to provide control power I when changing the polarity of the control power supplied to the first connector, depending on the state of contact of a pair of relay switches. 4. The two-wire type video telephone system of claim 1 or 2, wherein the first switching element and the second switching element are diodes.

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