JP2007067693A - Video entryphone system and extension adaptor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video entryphone system allowing increase in the number of extension devices connectable to a living room master unit without changing the existing living room master unit. <P>SOLUTION: An extension adaptor 4 is connected to an extension master unit 3 connected to the living room master unit 2 and an extension device 5 is connected to the extension master unit 3 via the extension adaptor 4. The extension adaptor 4 includes a master unit connection unit 10 to which the living room master unit 2 and the extension master unit 3 are connected, and a plurality of extension unit connection units 11 for connecting the extension device 5, and the master unit connection unit 10 is provided with a video termination circuit 13 for terminating a video signal transmission line. Moreover, the extension adaptor 4 is provided with an adaptor CPU 12 for controlling communication among the connected devices so as to attain communication and transmission of a camera imaged video signal among connected devices. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a television intercom apparatus that displays images captured by a camera provided in an entrance cordless handset in a living room master unit, and in particular, enables a television interphone apparatus equipped with an extension master unit and the extension master unit to be connected. Regarding expansion adapter.

  A TV interphone device that installs a camera in the entrance unit, transmits the visitor video captured by the camera to the living room base unit, and displays the captured video on the monitor installed in the living room base unit, FM modulates the captured video signal The room master unit demodulates the received video signal and outputs the image. For this reason, the transmission path of the video signal has an impedance set to a predetermined value in order to suppress deterioration of the video signal, and a termination resistor is installed at the terminal portion for matching. For example, if the parent device is one of the living room parent devices, a terminating resistor is provided in the living room parent device. If an additional parent device is connected to the living room parent device, the terminating resistor is connected to the additional parent device. Is provided.

FIG. 4 shows a state in which two additional devices are connected in a column to the living room master. In FIG. 4, 30 is an entrance child machine, 31 is a living room parent machine, and 32 is an extension parent machine. In this way, when there are a plurality of master units, the termination switch of one extension master unit 32 connected to the living room master unit 1 is turned off, and the termination switch (not shown) of the other extension master unit 32 serving as the termination unit is turned off. When turned on, the video signal transmission line is terminated.
In this way, when an extension device is connected to the living room master unit, the termination position of the signal transmission path is changed, so the termination resistor position change operation is performed, and the terminal unit (additional device) that becomes the new termination is newly created. An operation of providing a terminal resistor has been performed (see, for example, Patent Document 1).

JP 2005-217723 A

However, the above-mentioned conventional TV intercom apparatus has a limit on the maximum number of connections of the interface of the parent unit, even if devices such as an extension parent unit can be connected to the parent unit. It was limited, and it could not be expanded indefinitely, and the degree of freedom was low.
Therefore, in view of such problems, the present invention provides a TV intercom that can expand the number of connectable extension devices without changing the master unit even if the number of extension devices that can be connected to the master unit is limited. An object of the present invention is to provide an expansion adapter for connecting devices and expansion devices.

In order to solve the above-mentioned problem, the invention described in claim 1 includes an entrance cordless handset for calling a resident, and a living room base set for responding to the call of the entrance cordless handset. A TV interphone device that is equipped with a camera that captures the visitors and the monitor in the room is equipped with a monitor that displays the image captured by the camera. The extension adapter is composed of a plurality of extension devices such as a device and a voice recording device, and the extension adapter has a termination means for terminating the video signal transmission path leading to the entrance slave unit through the master unit. And a communication control means for enabling communication with each other.
Specifically, an extension adapter having a termination means for the video signal transmission line is connected to a room master unit equipped with an interface for connecting the extension device instead of the extension device. Even if the extension device is connected to the extension adapter, the room master determines that there is no connected device beyond the extension adapter.
In this way, the extension master unit or the like can be easily connected to the room master unit, and the number of extension device connections can be expanded without changing the existing room master unit. And since the extension adapter terminates the video signal transmission path connected to the entrance cordless handset, the room base unit can receive a good video signal regardless of the extension equipment connected thereafter, and the extension control equipment can be connected by the communication control means. Can communicate well with the entrance or the parent machine.

The invention of claim 2 has an entrance cordless handset for calling a resident, an office base phone for responding to the call of the entrance cordless handset, and at least one additional base phone connected to the office base phone. The entrance cordless handset is equipped with a camera that captures a visitor, and the living room base unit is a TV intercom device that includes a monitor that displays the image captured by the camera. 2 extension master units, video recording devices, audio recording devices, etc. are connected to each other, and the extension adapter has termination means for terminating the video signal transmission path that leads to the entrance slave unit via the living room master unit. In addition, a communication control means for enabling communication between the extension device and the room master unit or the extension master unit is provided.
Specifically, an extension adapter having a termination means for the video signal transmission line is connected to a room master unit equipped with an interface for connecting the extension device instead of the extension device. Even if the extension device is connected to the extension adapter, the room master determines that there is no connected device beyond the extension adapter.
In this way, the extension master unit or the like can be easily connected to the room master unit, and the number of extension device connections can be expanded without changing the existing room master unit. And since the extension adapter terminates the video signal transmission path connected to the entrance cordless handset, the room base unit can receive a good video signal regardless of the extension equipment connected thereafter, and the extension control equipment can be connected by the communication control means. Can communicate well with the entrance or the parent machine.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the extension adapter connects the extension device to the master unit side control port and the master unit side video port for connection to the living room master unit or the extension master unit. A plurality of extension side control ports and a set of extension side video ports, and communication control means between the base unit side control port and the extension side control port, and between the base unit side video port and the extension side video port It is possible to communicate with each other and to transmit a call signal and a video signal.
With this configuration, the extension device can communicate with the entrance slave unit and the living room master unit, can well receive the captured video of the entrance slave unit camera, and can also display the camera image on the extension device.

The invention according to claim 4 is the invention according to claim 3, wherein the communication control means enables communication between extension devices connected to the set of the extension side control port and the extension side video port. And
With this configuration, communication can be performed between additional devices, and convenience is improved.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the extension adapter includes a recording means for recording the video imaged by the camera.
With this configuration, camera-captured video can be recorded without providing recording means in each additional device.

According to the sixth aspect of the present invention, there is provided a master unit connection unit for connecting a master unit such as a living room master unit or an extension master unit of a TV intercom apparatus provided with a camera in an entrance slave unit, an extension master unit, a video recording device, and an audio recording device. And an extension adapter that can be connected to the base unit side of the TV intercom device, and connected to the base unit connection part. On the other hand, it has termination means for terminating the video signal transmission path, and has communication control means for controlling communication between the connected devices, enabling communication between the connected devices, and further transmitting the captured video signal of the camera. It is possible to do this.
With this configuration, the video signal transmission line is terminated, so that the parent room can receive a good video signal regardless of the additional equipment connected thereafter. The extension device connected to the extension adapter can communicate with the entrance slave unit and the room master unit well and receive video signals.

According to the television intercom apparatus according to the present invention, the extension master unit or the like can be easily connected to the living room master unit, and the number of extension devices connected can be expanded without changing the existing room master unit. And since the extension adapter terminates the video signal transmission path connected to the entrance, the base unit can receive a good video signal regardless of the extension equipment connected thereafter, and the extension equipment can be Good communication with the parent machine.
Further, according to the extension adapter according to the present invention, the video signal transmission path connected to the entrance cordless handset is terminated, so that the room master unit can receive a good video signal regardless of the extension equipment connected thereafter. The extension device connected to the extension adapter can communicate with the entrance slave unit and the room master unit well and receive video signals.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram of a television intercom apparatus according to the present invention, wherein 1 is an entrance cordless handset for calling a resident, 2 is a room base set for responding to the call of the entrance cordless handset 1, and 3 is an extension parent. 4 and 5 (5a to 5n) are extension devices (second extension master units, hereinafter referred to as a master extension A5a to master N5n). The front door unit 1 includes a camera 6 for photographing a visitor, and the living room base unit 2, the extension base unit 3, and the increased parent A5a to the increased parent N5n have a monitor 7 for outputting a captured image of the camera 6. Signal transmission paths L1 and L2 which are also video signal transmission paths between the entrance slave unit 1 and the base unit 2, between the base unit 2 and the extension base unit 3, and between the extension base unit 3 and the extension adapter 4, respectively. , L3, and the increased parent A5a to increased parent N5n are connected to the extension adapter 4 through signal transmission lines L4a to L4n, respectively. Further, 1a indicates a call button of the front door device 1, 9 indicates a call button on the parent device side, and 2a, 3a, and 8 indicate call buttons on the parent device side.

The extension adapter has a configuration as shown in the block diagram of FIG. In FIG. 2, reference numeral 10 denotes a master unit connection unit for connecting to the living room master unit 2 or the extension master unit 3, and 11, 11... Are extension unit connection units for connecting extension units. The expansion device connection unit 11 includes a control port 11a as an expansion side control port and a video port 11b as an expansion side video port. And communication and transmission of video information are possible.
Reference numeral 12 denotes an adapter CPU as a communication control means for controlling communication between the individual connection units 10, 11, 11,... And transmission of video signals, and is connected to each connection unit 10, 11, 11,. The communication between the connected devices is controlled, and the video signal sent from the entrance cordless handset 1 via the living room base unit 2 is transmitted to each connected device. Reference numeral 13 denotes a video termination circuit as termination means, and the video port 10b of the base unit connection unit 10 is in a termination state regardless of whether or not an additional device is connected.

  The TV intercom apparatus configured as described above operates as follows. When a call is made by pressing the call button 1a in the front door unit 1, a call signal is transmitted to the living room base unit 2 through the signal transmission line L1 and to the extension base unit 3 through the signal transmission line L2. . Then, the call signal is transmitted to the control port 10a of the base unit connection unit 10 of the extension adapter 4 via the signal transmission path L3. The call signal transmitted to the extension adapter 4 is transmitted from the control port 11a to the extension device A5a to the extension parent N5n via the control signal transmission lines L4a to L4n to the extension device connection unit 11 under the control of the adapter CPU 12.

  When a call is made from the front door 1, the room master 2 starts the camera 6, and the video signal captured by the camera 6 is sent to the room 2 and the extension master via the signal transmission lines L 1 and L 2. 3 is transmitted. In response to this video signal, the captured video of the camera 6 is displayed on both monitors 7 and 7. Further, the video signal is transmitted to the video port 10b of the extension adapter 4 via the signal transmission line L3, and the adapter CPU 12 outputs the received video signal to each video port 11b of the extension device connection unit 11, and the increased parent A5a to the increased parent N5n. An image captured by the camera 6 is displayed on the monitor 7.

  For example, when the call button 8 of the parent A5a is pressed, a control signal is transmitted from the parent A5a to the extension adapter 4, and the control signal is transmitted to the living room master 2 under the control of the adapter CPU12. When receiving the control signal, the room master unit 2 establishes a communication path between the entrance slave unit 1 and the extension adapter 4. At this time, the adapter CPU 12 controls to establish a communication path between the entrance slave unit and the increased parent A5a, and simultaneously controls the increased parent B5b to the increased parent N5n to be in a busy state. In this way, a telephone call can be made between the entrance cordless handset 1 and the parent A5a of the extension device 5.

  When a call is made from the living room master unit 2 or the extension master unit 3 to the extension device by the call button 9, the call signal is transmitted to the extension adapter 4 in the same manner as the call from the front door unit 1, and the control of the adapter CPU 12 is performed. As a result, a call signal is transmitted from the parent A5a to the parent N5n. When the call button 8 of the parent A5a that has received the call signal is pressed, for example, a control signal is transmitted to the extension adapter 4, and is transmitted to the room master 2 or the extension master 3 under the control of the adapter CPU12. The room master unit 2 or the extension master unit 3 establishes a communication path with the extension adapter 4 when receiving the control signal. At this time, the adapter CPU 12 performs control so as to establish a communication path between the room master 2 or the extension master 3 and the increase parent A5a, and at the same time, controls the increase parent B5b to the increase parent N5n to be in a busy state. In this way, a call can be made between the living room master unit 2 or the extension master unit 3 and the extension parent A5a of the extension device 5.

  On the other hand, when a room call is made from the extension device to the room master unit 2 or the extension master unit 3 by the call button 9, for example, when a call is made from the increase parent A5a, the call signal is controlled by the adapter CPU 12. It is transmitted to the room master 2 and the extension master 3, respectively. When the call button 2a or 3a of the room master unit 2 or the extension master unit 3 that has received the call is pressed, a control signal is transmitted to the extension adapter 4, and the room master unit 2 or the extension master unit is controlled by the adapter CPU 12. 3 and the communication path between the parent A5a are established. At this time, the increased parent B5b to the increased parent N5n are in a busy state under the control of the adapter CPU 12. In this manner, a call can be made between the living room master unit 2 or the extension master unit 3 and the extension device 5.

  On the other hand, among the additional devices 5, for example, an indoor call is made by the call button 9 in the parent A5a, and a call can be made between any of the parent B5b to the parent N5n. For example, when a call is performed between the increased parent A5a and the increased parent B5b, it is as follows. The call signal from the parent A5a is transmitted to the extension adapter 4, and the adapter CPU 12 that has received the call signal transmits the call signal to the parent B5b to the parent N5n, the room master 2, and the extension master 3. When the call button 8 of the parent B5b is pressed, a control signal is transmitted to the extension adapter 4. The extension adapter 4 that has received the control signal establishes a communication path between the parent B5b and the parent A5a under the control of the adapter CPU12. At this time, the adapter CPU 12 controls the parent C5c to the parent N5n, the room master 2 and the extension master 3 to be in a busy state. In this way, the extension devices 5 can talk with each other.

In this way, the extension adapter having the termination means for the video signal transmission path is connected to the room master unit equipped with the interface for connecting the extension device in place of the extension device. Even if the extension device is connected to the extension adapter, the room master determines that there is no connected device beyond the extension adapter. As a result, the extension master unit can be easily connected to the room master unit, and the number of extension devices connected can be expanded without changing the existing room master unit. And since the extension adapter terminates the video signal transmission line connected to the entrance cordless handset, the room base unit can receive a good video signal regardless of the extension equipment connected thereafter, and the extension equipment is Can communicate well with the entrance or the main unit.
In addition, the extension device can communicate with the entrance slave unit and living room master unit, can properly receive the captured video of the entrance slave unit camera, can also display the camera image on the extension device, and between the extension devices However, communication is possible and convenience is improved.

  FIG. 3 is a block diagram showing another example of the extension adapter. This extension adapter 15 is not provided with a dedicated port at each connection portion, but is provided with a call signal processing circuit 16 and a control signal processing circuit 17 for the same control. Is possible. Reference numeral 18 denotes an audio signal IF (interface), 19 denotes a video signal IF (interface), 20 denotes a recording unit for recording the captured image of the camera 6 transmitted from the front door 1, and 21 denotes an adapter CPU for controlling them. ing. The recording unit 20 is composed of a memory card and is removable from the extension adapter unit 15. By removing and connecting to a personal computer or the like, video data can be easily edited and processed.

  Hereinafter, the operation when the extension adapter 15 is attached to the TV intercom apparatus in place of the extension adapter 4 of FIG. 1 will be described. When the call signal from the front door 1 is received, the call signal processing circuit 16 transmits the call signal to the extension device 5 under the control of the adapter CPU 21. For example, when responding with the parent A5a, when the call button 8 of the parent A5a is pressed, a control signal is transmitted to the extension adapter 21. The control signal processing circuit 17 in the extension adapter 21 receives the control signal, and transmits the control signal to the living room master unit 2 under the control of the adapter CPU 21. When the living room master unit 2 receives the control signal, it is added to the entrance slave unit 1. A communication path between the audio signals IF 18 of the adapter 15 is established. Thereafter, the extension adapter 15 operates in the same manner as in the above-described embodiment, and establishes a communication path between the front door slave 1 and the increased parent A5a, and sets the increased parent B5b to the increased parent N5n in a busy state. In this way, a telephone call can be made between the front door 1 and the parent A5a. The call is made by an audio signal IF18.

  Further, the video signal transmitted from the entrance cordless handset 1 is transmitted to each extension device 5 via the video signal IF 19 of the extension adapter 15 and is captured by the camera 6 on the monitors 7 of the parent A5a to the parent N5n. Is displayed.

  The recording unit 20 operates as follows. The video signal transmitted from the camera 6 of the front door 1 to the extension adapter 15 is automatically recorded by the recording unit 20 under the control of the adapter CPU 21. When the recording / playback button 9 of the room master unit 2, the extension base unit 3, or the extension device 5 is pressed during standby, the extension adapter 15 that has received the playback signal transmits recording data under the control of the adapter CPU 21. 2 and the extension master unit 3 and further the extension device 5.

On the other hand, when there is a call signal from the living room master unit 2 or the extension master unit 3 to the extension device 5, the call signal is transmitted to the extension adapter 15 in the same manner as the call from the front cordless handset 1. Then, the call signal processing circuit 16 receives the call signal, and transmits the call signal to the extension device 5 under the control of the adapter CPU 21. Thereafter, the same operation as in the above embodiment is performed, and a call can be made between the living room master unit 2 or the extension master unit 3 and the extension device 5.
As described above, by providing the recording unit in the extension adapter, it is possible to record the camera-captured video without providing the recording means in each extension device, which can be used for crime prevention or the like.

The recording unit 20 may be provided in the extension adapter 4 having the configuration shown in FIG. Further, the extension device is not limited to the extension parent device having the same configuration as the living room parent device, but may be an interface, a video device, or a personal computer for processing video.
The recording unit 20 provided in the extension adapter 15 is removable from the extension adapter 15 as a memory card. However, the recording unit 20 may be configured by a memory chip or the like and assembled in the extension adapter.

It is a block diagram which shows an example of embodiment of the television intercom apparatus which concerns on this invention. It is a block diagram of the extension adapter which concerns on this invention. It is a block diagram which shows the other example of an expansion adapter. It is a block diagram of the conventional television intercom apparatus.

Explanation of symbols

  1 .. Entrance slave unit, 2 .... Living room master unit, 3. Extension base unit, 4. Extension adapter, 5 (5a to 5n), Extension equipment, 6. Camera, 7. Monitor, 10. · Base unit connection section, 10a · · Control port (base unit side control port), 10b · · Video port (base unit side video port), 11 · · Extension equipment connection unit, 11a · · Control port (extension side control port 11b ··· Video port (additional video port), 12 · Adapter CPU (communication control means), 13 · Video termination circuit (termination means), 15 · · Extension adapter, 20 · · Recording unit (recording means) ), 21 .. Adapter CPU (communication control means), L1 to L4... Signal transmission path (video signal transmission path).

Claims (6)

There is an entrance cordless handset for calling a resident, and a living room base set for responding to the call of the entrance cordless handset, the entrance cordless handset is provided with a camera for imaging a visitor, A television intercom apparatus comprising a monitor for displaying a captured image of the camera,
The living room master unit is formed by connecting a plurality of extension devices such as an extension master unit, a video recording device, and an audio recording device via an extension adapter,
The extension adapter has a termination means for terminating a video signal transmission path that continues to the entrance slave unit via the living room master unit, and communication control means that enables communication between the extension device and the living room master unit A television intercom apparatus characterized by comprising: An entrance cordless handset for calling a resident, a room base set for responding to the call of the entrance cordless handset, and at least one extension base set connected to the room base set, Is a television intercom apparatus that includes a camera that captures a visitor, and wherein the living room master unit includes a monitor that displays an image captured by the camera,
The extension master unit is formed by connecting a plurality of extension devices such as a second extension master unit, a video recording device, and an audio recording device via an extension adapter,
The extension adapter has a termination means for terminating a video signal transmission path that leads to the entrance slave unit via the room master unit, and communicates between the extension device and the room master unit or the extension master unit. A television intercom apparatus, characterized by comprising communication control means for enabling. The extension adapter includes a master unit side control port and a master unit side video port for connection to the living room master unit or the extension master unit, and a plurality of extension side control ports and extension side video ports for connecting the extension device. With a set of
The communication control means can communicate between the base unit side control port and the expansion side control port, and between the base unit side video port and the expansion side video port, and can transmit a call signal and a video signal. The television intercom apparatus according to claim 1 or 2, wherein 4. The television intercom apparatus according to claim 3, wherein the communication control means enables communication between extension devices connected to the set of the extension side control port and the extension side video port. 5. The television intercom apparatus according to claim 1, wherein the extension adapter includes recording means for recording a video imaged by the camera. Connect the main unit connection part that connects the main unit of the TV interphone device with a camera to the entrance unit and the main unit such as the expansion main unit and the expansion unit such as the expansion main unit, video recording device, audio recording device, etc. And an extension adapter that enables the extension of the base unit side device of the TV intercom device,
In addition to having termination means for terminating the video signal transmission path for the devices connected to the base unit connection section, it has communication control means for controlling communication between the connected devices, and communication between the connected devices is possible. And an additional adapter characterized in that transmission of a video signal taken by the camera is possible.

Images