JP2012015856A - Housing interphone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing interphone system capable of transmitting a picked-up image data (analog signal) taken with a plurality of cameras through one transmission line, and easily displaying the picked-up image data taken with the plurality of cameras on a monitor of a master unit in a room at the same time.SOLUTION: An entrance slave unit 1 has a mechanism which, based on the timing at which a predetermined signal contained in the output of camera 101 is output from the camera 101, outputs the picked-up image data of a first buffer 103 or the picked-up image data of a second buffer 106 by sequential switching. A room master unit has a mechanism which switches an output destination for each picked-up image data by switching the output destination of the data output from an A/D conversion part 304 based on the timing at which a predetermined signal is output from a signal separation circuit 302.

Description

  The present invention relates to a house intercom system, and more particularly, to a house intercom system that can display captured image data of an entrance slave unit and captured image data of an entrance camera on a monitor of a base unit.

Conventionally, a residential intercom system 100 configured as shown in FIG. 6 is known.
The residential intercom system 100 is configured to receive an entrance cordless handset 120, an entrance camera 130, image data transmitted from the entrance cordless handset 120 or the entrance camera 130, and display the received image data on a monitor 143. And a master unit 140.
The entrance cordless handset 120 is used to call a resident and is mainly installed at the entrance S of the dwelling unit. An entrance camera 130 is also installed at the entrance S of the dwelling unit. The room master unit 140 is used to respond to a call from the entrance slave unit 120 and is installed in the dwelling unit T.

  The entrance cordless handset 120 of the home intercom system 100 includes a camera 121 that captures a visitor, a transmission unit 122 that transmits captured image data captured by the camera 121 to the room base unit 140, and a call button (not shown). Have. The entrance camera 130 includes a camera 131 that captures a visitor and a transmission unit 132 that transmits captured image data captured by the camera 131 to the living room master unit 140. The room master unit 140 receives the captured image data transmitted from the transmission unit 142 of the entrance camera 130 and the captured image data transmitted from the transmission unit 142 of the entrance camera 130. 2 transmission units 142, a monitor 143 that displays captured image data received by the first transmission unit 141 or the second transmission unit 142, a call control of the room master unit 140, and a captured image that is displayed on the monitor 143 It has a control unit 144 that performs data switching control, and a call button and a video switching button (not shown). The entrance cordless handset 120 and the room base unit 140 are connected by a transmission line L11, and the entrance camera 130 and the room base unit 140 are connected by a transmission line L12.

In the residential intercom system 100 having such a configuration, when a visitor presses a call button (not shown) of the entrance cordless handset 120, the living room base phone 140 enters a calling state and the cameras 121 and entrance cameras 130 of the entrance cordless handset 120 enter the calling state. Imaging by the camera 131 is started, and either one of the captured image data captured by the camera 121 of the entrance slave unit 120 or the captured image data captured by the camera 131 of the entrance camera 130 is displayed on the monitor 143 of the living room master unit 140. It is displayed.
When the resident presses a call button (not shown) of the room master unit 140 and responds while the room base unit 140 is in the calling state, the telephone unit 120 and the room base unit 140 are in a call state.
In this call state, when the resident presses a video switching button (not shown) of the room master unit 140, the control unit 144 uses the captured image data displayed on the monitor 143 of the room base unit 140 as the camera 121 of the entrance slave unit 120. The captured image data captured by the camera 131 of the entrance camera 130 from the captured image data captured by the camera 131, or the captured image data captured by the camera 131 of the entrance camera 130 from the captured image data captured by the camera 131 of the entrance camera 130 Control to switch to image data is executed. As a result, every time the resident presses a video switching button (not shown), the captured image data of a different camera is displayed on the monitor 143.

Conventionally, an apartment house intercom system 200 configured as shown in FIG. 7 is known.
The collective housing intercom system 200 is used in a collective housing such as a condominium, and receives image data transmitted from the collective entrance machine 220, the entrance camera 230, and the control device 250, and monitors the received image data on the monitor 242. And a control unit 250 that performs call control of the room master unit 240 and switching control of captured image data transmitted to the room base unit 240.
The collective entrance machine 220 is used to call a resident and is mainly installed at the entrance P of the apartment. An entrance camera 230 is also installed at the entrance P of the apartment. The room master unit 240 is used to respond to a call from the collective entrance machine 220 and is installed in each dwelling unit R of the apartment. The control device 250 is installed in the common part Q of the apartment.

The collective entrance machine 220 of the collective housing intercom system 200 includes a camera 221 that images a visitor, a transmission unit 222 that transmits captured image data captured by the camera 221 to the control device 250, and a call button (not shown). Have. The entrance camera 230 includes a camera 231 that captures a visitor and a transmission unit 232 that transmits captured image data captured by the camera 231 to the control device 250.
The control device 250 receives a first transmission unit 251 that receives the captured image data transmitted from the transmission unit 222 of the collective entrance 220 and a second transmission unit 251 that receives the captured image data transmitted from the transmission unit 232 of the entrance camera 230. The transmission unit 252, the control unit 254 that controls the calling control of the predetermined room master unit 240 and the switching control of the captured image data transmitted to the room base unit 240, and the image capture transmitted from the transmission unit 222 of the collective entrance 220 And a third transmission unit 253 that transmits either the image data or the captured image data transmitted from the transmission unit 222 of the entrance camera 230 to the destination base unit 240.
The room master unit 240 includes a transmission unit 241 that receives the captured image data transmitted from the control device 250, a monitor 242 that displays the captured image data received by the transmission unit 241, a call button and a video switching button (not shown). Have. The collective entrance machine 220 and the control device 250 are connected by a transmission line L13, the entrance camera 230 and the control device 250 are connected by a transmission line L14, and the control device 250 and the room master unit 240 are connected by a transmission line L15.

In the collective housing intercom system 200 having such a configuration, when a visitor inputs a room number of a visit destination in the collective entrance 220, call control is executed in the control unit 254 of the control device 250, and a call is received from the visitor. In addition, the predetermined room master 240 enters the calling state and imaging by the camera 221 of the collective entrance 220 and the camera 231 of the entrance camera 230 is started, and the camera 221 of the collective entrance 220 is displayed on the monitor 242 of the room master 240. One of the captured image data captured by the camera 231 and the captured image data captured by the camera 231 of the entrance camera 230 is displayed.
When the resident presses a call button (not shown) of the room master unit 240 and responds while the room master unit 240 is in the calling state, the call between the collective entrance unit 220 and the room master unit 240 is brought into a call state.
In this call state, when the resident presses a video switching button (not shown) of the room master unit 240, the control device 250 captures captured image data transmitted from the third transmission unit 253 to the room base unit 240. From the captured image data captured by the camera 221 to the captured image data captured by the camera 231 of the entrance camera 230, or from the captured image data captured by the camera 231 of the entrance camera 230, by the camera 221 of the collective entrance handset 220. Control to switch to captured image data is executed. As a result, each time the resident presses a video switching button (not shown), the captured image data of a different camera is displayed on the monitor 242.

Japanese Patent Laid-Open No. 11-127433 JP 2000-101731 A Japanese Patent Laid-Open No. 2004-180086

Thus, in the residential intercom system 100 or the collective housing intercom system 200, the captured image data is transmitted as an analog signal, and a transmission line is formed between the desired camera by switching the connection destination in the living room master unit, and transmission is performed. The captured image data is displayed on the monitor. Each time a video switching button (not shown) is pressed, a transmission line is formed between different cameras, and captured image data of different cameras are sequentially displayed on the monitor 242.
However, since the residential intercom system 100 or the collective housing intercom system 200 has a configuration in which one transmission line is formed by switching the connection destination in the living room master unit, the monitors 143 of the living room master units 140 and 240 are configured. , 242 can only display captured image data of one camera, and in order to confirm the captured image data of another camera, it was necessary to switch the captured image data displayed on the monitor by a resident's operation. . On the other hand, if the captured image data of a plurality of cameras can be simultaneously displayed on the monitor of the living room master unit, the captured image data of the plurality of cameras can be confirmed without performing a switching operation, which is highly convenient.

  The present invention has been made with the above points in mind, and can capture image data (analog signals) from a plurality of cameras via a single transmission line, making it easy to monitor a parent unit. It is an object of the present invention to provide a residential intercom system that can simultaneously display captured image data of a plurality of cameras.

  In order to solve the above problems, the present inventor proposes the following residential intercom system.

A residential intercom system according to the present invention is installed at an entrance of a house and has a camera for imaging a visitor and an entrance cordless handset having a function of calling a resident, and is installed at the entrance for imaging a visitor. One or more entrance cameras, and a room parent device installed in the house and provided with a function and a monitor for responding to a call from the entrance child device.
The entrance unit includes first data conversion means for A / D converting first captured image data that is data captured by the camera, and Nth image capturing that is data captured by the one or more entrance cameras. N-th data conversion means for A / D converting image data (N is an integer of 2 or more), and a first buffer for buffering first captured image data A / D converted by the first data conversion means , Based on the Nth buffer for buffering the Nth captured image data A / D converted by the Nth data conversion means, and the timing at which a predetermined signal included in the output of the camera is output from the camera. The A / D converted first captured image data of the first buffer or the A / D converted N captured image data of the Nth buffer is sequentially switched and output. Data that can be transmitted to the living room master unit, D / A data converting means for D / A converting the data output from the switching means, and data output from the D / A data converting means Transmitting and receiving means.
According to the residential intercom system having such a configuration, it is possible to transmit the captured image data of a plurality of cameras in a predetermined order from the entrance child device to the living room parent device through one transmission line.
Here, “transmission in a predetermined order” means that the captured image data of a plurality of cameras may be transmitted in any order as long as they are transmitted in a certain regular order. It is possible to transmit captured image data alternately.

In addition, another residential intercom system provided by the present invention is installed at the entrance of a house, and is installed at the entrance and the entrance cordless handset having a camera for imaging a visitor and a function of calling a resident. One or more entrance cameras having a camera for taking an image of a person, and a room parent device installed in the house and provided with a function and a monitor for responding to a call from the entrance child machine.
One of the entrance cameras of the residential intercom system includes a first data conversion means for A / D converting first captured image data that is data captured by the camera, a camera of the entrance unit, or another N-th captured image data (N is an integer of 2 or more) which is data captured by the entrance camera, N-th data conversion means for A / D conversion, and first A / D-converted by the first data conversion means A first buffer for buffering captured image data, an Nth buffer for buffering Nth captured image data A / D converted by the Nth data conversion means, and a predetermined output included in the output of the camera Based on the timing at which a signal is output from the camera, the A / D converted first captured image data of the first buffer or the Nth buffer A switching means for sequentially switching and outputting the A / D converted N-th captured image data, a D / A data converting means for D / A converting the data output from the switching means, and the D / A data conversion Data transmitting / receiving means capable of transmitting data output from the means to the room master unit.
Also in the housing intercom system having such a configuration, as in the above-described housing intercom system, it is possible to transmit the image data of a plurality of cameras in a predetermined order from the entrance cordless handset to the living room base phone through a single transmission line.

Here, the “predetermined signal included in the camera output” may be a signal output from the camera at a constant interval, and specifically, a field signal or a vertical synchronization signal output from the camera can be used. .
For example, when the field signal output from the camera is used as the predetermined signal, the switching unit of the entrance cordless handset or the entrance camera, when the even field signal is output from the camera, the first captured image data of the first buffer or the second When one of the second captured image data in the buffer is output from the camera and an odd field signal is output from the camera, either the first captured image data in the first buffer or the second captured image data in the second buffer is output. It can be set as such a structure.
When the field signal is used, the circuit configuration is simplified as compared with the case where the vertical synchronizing signal is used, but the image quality is greatly deteriorated. On the other hand, when the vertical synchronizing signal is used, the circuit configuration is complicated as compared with the case where the field signal is used, but the deterioration of the image quality is small.

The living room base unit includes a data transmission / reception unit capable of receiving data transmitted from the entrance unit or the entrance camera, and a signal separation for separating the predetermined signal from the data received by the data transmission / reception unit. Means, A / D conversion of the data received by the data transmitting / receiving means, and converting the received data into first captured image data or Nth captured image data; and the predetermined signal from the signal separating means Is output from the output destination switching means and the output destination switching means for switching the output destination for each captured image data by switching the output destination of the data output from the data conversion means based on the timing at which the data is output. A first buffer for buffering the first captured image data; and An Nth buffer for buffering the Nth captured image data output from the first buffer, and at least two of the first captured image data in the first buffer and the Nth captured image data in the Nth buffer in the monitor. Display control means capable of controlling two or more to be displayed at the same time.
According to the residential intercom system having such a configuration, the output destination switching means switches the output destination of the data output from the data conversion means based on the timing at which a predetermined signal is output from the signal separation means. Therefore, at least two of the first captured image data of the first buffer to the Nth captured image data of the Nth buffer can be easily displayed simultaneously on the monitor, and the resident can capture images of a plurality of cameras at once. You can check the data. Thereby, the resident does not need to perform an operation of switching the captured image data displayed on the monitor in order to confirm the captured image data of another camera, and the convenience is high.

The above-described residential intercom system of the present invention can also be used as a collective housing intercom system used in condominiums and the like.
When used as such a collective housing intercom system, the home intercom system can be configured as follows.
The entrance slave unit of this system is a collective entrance unit installed at the entrance of an apartment house, the base unit is installed in each dwelling unit of the apartment house, and the house intercom system includes the collective entrance machine , Further comprising a control device for controlling the one or more entrance cameras and the living room master unit, wherein the data transmission / reception means of the collective entrance machine or the entrance camera is output from the D / A data conversion means. The control device is configured to output a signal received from the data transmission / reception means of the collective entrance machine to a predetermined living room master device as a transmission destination, thereby transmitting the signal to the control device. A signal output from the D / A data conversion means is output from the collective entrance or the entrance camera to the predetermined room master. Door can be.

The living room master may further include a resizer for resizing at least one data of the first buffer to the Nth buffer.
If such a resizer is provided, the size of the captured image data displayed at the same time can be changed for each camera, and the display can be adapted to the resident's preference by setting. Specifically, for example, captured image data captured by a camera can be displayed in a large size, and captured image data captured by an entrance camera can be displayed in a small size.

The living room master further has a display switching button for switching the display of the monitor, and the display control means changes the image data displayed on the monitor each time the display switching button is operated. It is good also as a structure which does.
That is, according to the house intercom system having such a configuration, not only the first captured image data and the Nth captured image data are simultaneously displayed on the monitor but also the first captured image is displayed on the monitor by pressing the display switching button. Only the data can be displayed, only the Nth captured image data can be displayed, and the display can be switched sequentially, which is highly convenient.

  According to the present invention, captured image data (analog signals) of a plurality of cameras can be transmitted through a single transmission line, and the captured image data of a plurality of cameras can be easily displayed simultaneously on a monitor of a living room master unit. it can.

The figure which shows the whole structure of the housing intercom system of 1st Embodiment of this invention. The block diagram which shows the structure of the house intercom system of 1st Embodiment of this invention. The figure which shows the whole structure of the apartment house intercom system of 2nd Embodiment of this invention. The block diagram which shows the structure of the apartment house intercom system of 2nd Embodiment of this invention. The figure which shows the modification of the housing intercom system or apartment housing intercom system of this invention. The figure which shows the whole structure of the conventional housing intercom system. The block diagram which shows the structure of the conventional housing complex intercom system.

  Hereinafter, a preferred embodiment of a residential intercom system of the present invention will be described in detail with reference to the drawings.

<First Embodiment>
The residential intercom system 1 according to the first embodiment is schematically configured as shown in FIGS. 1 and 2.
That is, the residential intercom system 1 according to the present embodiment is installed at the entrance A of the house, and is connected to the entrance cordless handset 10 provided with a call button 11 for a visitor to call the resident, and the entrance cordless handset 10. An entrance camera 20, and a room base unit 30 that is installed in the house B and includes a call button 31 that responds to a call from the front door 10, a display switching button 32, and a monitor 310.
The entrance cordless handset 10 and the entrance camera 20 are connected via a transmission line L1, and the entrance cordless handset 10 and the room base phone 30 are connected via a transmission line L2.

  As shown in FIG. 2, the entrance unit 10 includes a first A / D conversion unit 102 that converts first captured image data, which is data captured by the camera 101, from analog data to digital data (A / D conversion); The first buffer 103 for buffering the first captured image data A / D converted by the first A / D converter 102, and the second captured image data which is data captured by the entrance camera 20 20, a first transmission unit 104 that receives the image data 20, a second A / D conversion unit 105 that performs A / D conversion on the second captured image data, and a second A / D-converted second A / D converter 105. A second buffer 106 for buffering captured image data, and a timing generation time for generating timing based on a predetermined signal included in the output of the camera 101 107 and A / D converted first captured image data of the first buffer 103 or A / D converted second captured image data of the second buffer 106 based on the timing generated by the timing generation circuit 107. A multiplexer 108 that sequentially switches and outputs, a D / A converter 109 that converts the data output from the multiplexer 108 from digital data to analog data (D / A conversion), and the D / A converter 109 It has the 2nd transmission part 110 which can transmit data (analog signal) to the living room main | base station 30. FIG.

  The entrance camera 20 is a camera for imaging a visitor attached to the entrance. As shown in FIG. 2, a camera 201 for imaging a visitor and data captured by the camera 201 are the first. A transmission unit 202 that transmits two captured image data to the front door 10 via the transmission line L1. The entrance camera 20 is configured to operate based on the control of the front door 10.

As shown in FIG. 2, the living room base unit 30 includes a transmission unit 301 that receives data (analog signal) transmitted from the second transmission unit 110 of the front door unit 10 via the transmission line L2, and a transmission unit 301. A synchronization separation circuit 302 for separating a predetermined signal from the data received by the above, a timing generation circuit 303 for generating a timing based on a timing at which the predetermined signal is output from the synchronization separation circuit 302, and a transmission unit 301 A / D conversion is performed on the received data, and the received data is converted from analog data to digital data. The A / D conversion unit 304 outputs the data based on the timing generated by the timing generation circuit 303. Multiplexer 305 for switching the output destination of the data to be output, and buffering the data output from multiplexer 305 A first buffer 306 and second buffer 307 for a resizer 308 resizes (enlarges or reduces) the data in the second buffer 307, a display control unit 309, and a monitor 310.
In addition, since it is the same as that of the conventional intercom system that the entrance cordless handset 10 and the room base phone 30 are provided with an audio circuit, a video circuit, and the like necessary for a call, the description thereof will be omitted.

  Next, the operation of the residential intercom system 1 configured as described above, specifically, the operation when the visitor presses the call button 11 of the front door 10 will be described.

When the visitor presses the call button 11 of the entrance child device 10, the living room parent device 30 enters the calling state, and the cameras of the entrance child device 10 and the entrance camera 20 are controlled under the control of the entrance child device 10. Imaging by 201 is started.
The first captured image data that is data captured by the camera 101 is A / D converted by the first A / D converter 102 and buffered in the first buffer 103. Data captured by the camera 101 is also input to the timing generation circuit 107. The timing generation circuit 107 generates timing based on a field signal included in the camera 101.
In addition, second captured image data that is data captured by the camera 201 of the entrance camera 20 is transmitted from the transmission unit 202 to the first transmission unit 104 via the transmission line L1, and is then transmitted by the second A / D conversion unit 105. A / D converted and buffered in the second buffer 106.
The first captured image data subjected to A / D conversion in the first buffer 103 or the second captured image data subjected to A / D conversion in the second buffer 106 is sequentially transmitted from the multiplexer 108 based on the timing generated by the timing generation circuit 107. Is output. Specifically, in the present embodiment, when an even field signal is output from the camera 101, the first captured image data subjected to A / D conversion in the first buffer 103 is output from the multiplexer 108, and the odd field is output from the camera 101. When a signal is output, the second buffer 106 is configured to output A / D converted second captured image data, whereby two types of captured image data are alternately output. It becomes.
The data output from the multiplexer 108 is converted from digital data to analog data (D / A conversion) by the D / A conversion unit 109, and is transmitted from the second transmission unit 110 to the living room master unit 30 via the transmission line L2. The

The data (analog signal) transmitted from the second transmission unit 110 of the entrance cordless handset 10 as described above is received by the transmission unit 301 of the living room base unit 30.
The data received by the transmission unit 301 is input to the A / D conversion unit 304 and A / D converted. In addition, the data received by the transmission unit 301 is also input to the synchronization separation circuit 302. The synchronization separation circuit 302 separates the field signal from the data received by the transmission unit 301 and transmits it to the timing generation circuit 303. The timing generation circuit 303 generates timing based on the field signal input from the synchronization separation circuit 302.
The data A / D converted by the A / D converter 304 is distributed to either the first buffer 306 or the second buffer 307 by the multiplexer 305. Specifically, in this embodiment, the multiplexer 305 outputs the data A / D converted by the A / D converter 304 to the first buffer 306 when the even field signal is output from the synchronization separation circuit 302. When an odd field signal is output from the synchronization separation circuit 302, the data A / D converted by the A / D converter 304 is output to the second buffer 307. That is, the multiplexer 305 switches the output destination for each type of captured image data. The first captured image data is output to the first buffer 306, and the second captured image data is output to the second buffer 307. It will be. The first captured image data in the first buffer 306 is input to the display control unit 309, and the second captured image data in the second buffer 307 is resized by the resizer 308 and then input to the display control unit 309.
The display control unit 309 performs control so that the first captured image data in the first buffer 306 and the second captured image data in the second buffer 307 are displayed on the monitor 310 at the same time. The first captured image data is large and the second captured image data is small and displayed simultaneously.

If the resident presses the call button 31 of the room master unit 30 and responds while the room master unit 30 is in the calling state, the telephone unit 10 and the room master unit 30 are in a call state.
When the resident presses the display switching button 32 of the room master unit 30 in the calling state or in this call state, the multiplexer 305 and the display control unit 309 display the image data displayed on the monitor 310 of the room base unit 30 as the first data. Control for switching to only one captured image data or only to the second captured image data is executed. Thus, each time the resident presses the display switching button 32, the first captured image data and the second captured image data are simultaneously displayed, only the first captured image data is displayed, and only the second captured image data is displayed. Sequentially displayed image data is switched. When displaying only the second captured image data, the multiplexer 305 switches the output destination so that the second captured image data is output to the first buffer 306, and the display control unit 309 displays the image in the first buffer 306. It is configured to display data.

  As described above, according to the residential intercom system 1 of the present embodiment, it is possible to transmit the captured image data of the plurality of cameras 101 and 201 from the entrance slave unit 10 to the living room master unit 30 through one transmission line.

In the present embodiment, when an even field signal is output from the camera 101, the first captured image data obtained by A / D conversion of the first buffer 103 is output from the multiplexer 108, and an odd field signal is output from the camera 101. In this case, the A / D converted second captured image data of the second buffer 106 is output, and two types of captured image data are alternately transmitted from the front door unit 10 to the room base unit 30. However, the multiplexer 108 is configured such that the A / D-converted first captured image data or the second buffer is based on the timing at which a predetermined signal included in the output of the camera 101 is output from the camera 101. It suffices if the second captured image data subjected to A / D conversion is sequentially switched and output.
The “predetermined signal” may be a signal included in the output of the camera 101 and output at a constant interval, and a vertical synchronization signal may be used instead of the field signal output by the camera. When the field signal is used, the circuit configuration is simplified as compared with the case where the vertical synchronizing signal is used, but the image quality is greatly deteriorated. On the other hand, when the vertical synchronizing signal is used, the circuit configuration is complicated as compared with the case where the field signal is used, but the deterioration of the image quality is small.

Further, it is not necessary to have a configuration in which two types of captured image data are alternately transmitted from the front door unit 10 to the living room base unit 30, and the captured image data of a plurality of cameras are transmitted in a predetermined order. Just do it. In other words, the captured image data of a plurality of cameras may be transmitted in any order as long as they are transmitted in a certain regular order.
Moreover, although the house intercom system 1 of the present embodiment has been described as having one entrance camera 20, the present invention is not limited to this, and a plurality of entrance cameras 20 may be configured. In this case, the number of A / D converters and buffers of the entrance cordless handset 10 is added by the number of added entrance cameras.
Moreover, although the housing intercom system 1 according to the present embodiment has been described as having a configuration capable of simultaneously displaying the captured image data of two cameras, when there are three cameras, the buffer of the room master unit 30 If three are used, it is possible to adopt a configuration in which the image data of the three cameras can be displayed on the monitor 310 at the same time. That is, if the number of buffers in the room master unit 30 is increased, the maximum number of buffers can be simultaneously displayed on the monitor 310.

  Further, according to the residential intercom system 1 of the present embodiment, the output destination is switched for each type of captured image data by the multiplexer 305, so that the plurality of cameras 101, 201 captured image data can be displayed at the same time, and a resident can check captured image data of a plurality of cameras at a time. Thereby, since the captured image data of the plurality of cameras 101 and 201 can be displayed on the monitor 310 at the same time, the operation of switching the captured image data displayed on the monitor in order to confirm the captured image data of other cameras is occupying. It is not necessary for the person to do it and is very convenient.

In addition, the living room base unit 30 includes a resizer 308 that resizes the data in the second buffer. Therefore, the size of the captured image data displayed on the monitor 310 can be changed for each camera. Display that suits the user's preference.
In the present embodiment, the captured image data captured by the camera 101 of the front door 10 is displayed in a large size, and the captured image data captured by the camera 201 of the entrance camera 20 is displayed in a small size. Although described as a thing, it is not restricted to this, The picked-up image data imaged with the camera 101 of the entrance camera 20 is displayed small, the picked-up image data imaged with the camera 201 of the entrance camera 20 is displayed large, It is good also as a structure which displays data on the same magnitude | size. In other words, a configuration may be provided that includes a resizer for resizing at least one data in the first buffer 306 or the second buffer 307, or a configuration without such a resizer.

  In addition, the living room master 30 further includes a display switching button 32, and the display control unit 309 changes the captured image data displayed on the monitor 310 each time the display switching button 32 is operated. Therefore, not only the first captured image data and the second captured image data are simultaneously displayed on the monitor 310, but also only the first captured image data is displayed on the monitor 310 by pressing the display switching button 32. Only the second captured image data can be displayed or the display can be switched sequentially, which is highly convenient.

<Second Embodiment>
The apartment house intercom system 2 according to the second embodiment is schematically configured as shown in FIGS. 3 and 4. The housing intercom system 2 of this embodiment is different from the housing intercom system 1 of the first embodiment mainly used in a detached house in that it is an intercom system used in a housing complex such as a condominium. The difference is that the control device 70 is not included in one.

The intercom system 2 according to the present embodiment is installed at the entrance C of the apartment house, and an operation unit 41 for a visitor to input a room number of a visit destination and perform a call operation, and the operation unit 41 input the interphone system 2 Collective entrance machine 40 provided with a display unit 42 for displaying a room number, the entrance camera 50 connected to the collective entrance machine 40, and installed in each dwelling unit E, responds to calls from the collective entrance machine 40 Installed in the common part D of the multiple dwelling units D, which are provided with a function of responding to calls from the collective entrance unit 40 having a call button 61, a display switching button 62 and a monitor 610, and the collective entrance unit 40 And a control device 70 for controlling the entrance camera 50 and the parent room 60.
The collective entrance machine 40 and the entrance camera 50 are connected via a transmission line L3, the collective entrance machine 40 and the control apparatus 70 are connected via a transmission line L4, and the control apparatus 70 and the room master unit 60 are connected via a transmission line L5.

As shown in FIG. 4, the collective entrance machine 40 includes a first A / D conversion unit 402 that converts first captured image data, which is data captured by the camera 401, from analog data to digital data (A / D conversion). The first buffer 403 for buffering the first captured image data A / D converted by the first A / D converter 402, and the second captured image data which is data captured by the entrance camera 50 are used as the entrance camera. 50, the second transmission unit 404 that receives the second captured image data, the second A / D conversion unit 405 that performs A / D conversion on the second captured image data, and the second A / D converted by the second A / D conversion unit 405. Timing generation for generating timing based on a second buffer 406 for buffering captured image data and a predetermined signal included in the output of the camera 401 Path 407 and A / D converted first captured image data of the first buffer 403 or A / D converted second captured image data of the first buffer 403 based on the timing generated by the timing generation circuit 407 408 that sequentially switches and outputs the data, a D / A conversion unit 409 that converts the data output from the multiplexer 408 from digital data to analog data (D / A conversion), and the D / A conversion unit 409 And a second transmission unit 410 that can transmit data (analog signal) to the control device 70.
The configuration of the collective entrance 10 is basically the same as that of the entrance 10 of the first embodiment, but the data output from the D / A conversion unit 409 is transmitted from the second transmission unit 410 to the control device. It is different from the first embodiment in that it is transmitted to 70.

The entrance camera 50 is a camera attached to an entrance for imaging a visitor. The camera 501 for imaging a visitor and second captured image data which is data captured by the camera 501 are transmitted through a transmission line. And a transmission unit 502 that transmits to the collective entrance machine 40 via L3. The entrance camera 50 is configured to operate based on the control of the collective entrance machine 40.
The configuration of the entrance camera 50 is the same as the configuration of the entrance camera 20 of the first embodiment.

  The control device 70 has a first transmission unit 701 capable of receiving data transmitted from the second transmission unit 410 of the collective entrance child device 40, and the data received by the first transmission unit 701 as a predetermined value. Exchange control unit 702 for transmitting to a destination (predetermined parent device), and second transmission capable of transmitting data output from the exchange control unit 702 to the predetermined living room parent device via transmission line L5 Part 703.

The living room master 60 receives a data (analog signal) transmitted from the second transmission unit 703 of the control device 70 via the transmission line L5, and a predetermined signal from the data received by the transmission unit 601. Synchronization separation circuit 602 for separating the data, a timing generation circuit 603 for generating timing based on the timing at which a predetermined signal is output from the synchronization separation circuit 602, and A / D conversion of the data received by the transmission unit 601 An A / D conversion unit 604 that converts received data into digital data; a multiplexer 605 that switches an output destination of data output from the A / D conversion unit 604 based on timing generated by the timing generation circuit 603; A first buffer 606 and a second buffer for buffering data output from the multiplexer 605 A fan 607, a resizer 608 resizes the data in the second buffer 607, a display control unit 609, and a monitor 610.
The configuration of the living room master 60 is basically the same as the configuration of the living room master 30 of the first embodiment, but the transmission unit 601 receives data transmitted from the second transmission unit 703 of the control device 70. This is different from the first embodiment.
In addition, since it is the same as the conventional intercom system that the collective entrance machine 40, the living room master 60, and the control device 70 are provided with an audio circuit, a video circuit, and the like necessary for a telephone call, description thereof will be omitted.

  Next, the operation of the apartment house intercom system 2 configured as described above, specifically, the operation when the visitor performs a call operation by operating the operation unit 41 of the apartment hall 40 will be described. .

When a visitor operates the operation unit 41 of the collective entrance machine 40 to perform a call operation, based on the control of the control device 70, the called predetermined room base unit 60 enters a call state and the collective entrance machine 40. Under the control, imaging by the camera 401 of the entrance hall 40 and the camera 501 of the entrance camera 50 is started.
First captured image data, which is data captured by the camera 401, is A / D converted by the first A / D conversion unit 402 and buffered in the first buffer 403. Data captured by the camera 401 is also input to the timing generation circuit 407. A timing generation circuit 407 generates timing based on a field signal included in the camera 401.
In addition, second captured image data that is data captured by the camera 501 of the entrance camera 50 is transmitted from the transmission unit 502 to the first transmission unit 404 via the transmission line L3, and is then transmitted by the second A / D conversion unit 405. A / D converted and buffered in the second buffer 406.
The A / D converted first captured image data of the first buffer 403 or the A / D converted second captured image data of the second buffer 406 is sequentially sent from the multiplexer 408 based on the timing generated by the timing generation circuit 407. Is output. Specifically, in the present embodiment, when an even field signal is output from the camera 401, the first captured image data subjected to A / D conversion in the first buffer 403 is output from the multiplexer 408, and the odd field is output from the camera 401. When the signal is output, the second captured image data subjected to A / D conversion in the second buffer 406 is output, and thereby two types of captured image data are alternately output. It will be.
Data output from the multiplexer 408 is D / A converted by the D / A converter 409 and transmitted from the second transmitter 410 to the controller 70 via the transmission line L2.

  Data (analog signal) transmitted from the second transmission unit 410 of the collective entrance 40 as described above is received by the first transmission unit 701 of the control device 70. Data received by the first transmission unit 701 is transmitted to the exchange control unit 702. The exchange control unit 702 performs exchange control for transmitting the data received by the first transmission unit 701 to the called room parent device 60, and the data output from the exchange control unit 702 is the second The data is transmitted from the transmission unit 703 to a predetermined living room master 60 that is a call destination via the transmission line L5.

Data (analog signal) transmitted from the second transmission unit 703 of the control device 70 as described above is received by the transmission unit 601 of the living room master unit 60.
The data received by the transmission unit 601 is input to the A / D conversion unit 604 and A / D converted. Further, the data received by the transmission unit 601 is also input to the synchronization separation circuit 602. The synchronization separation circuit 602 separates the field signal from the data received by the transmission unit 601 and transmits it to the timing generation circuit 603. The timing generation circuit 603 generates timing based on the field signal input from the synchronization separation circuit 602.
The data A / D converted by the A / D converter 604 is distributed to either the first buffer 606 or the second buffer 607 by the multiplexer 605. Specifically, in this embodiment, the multiplexer 605 outputs the data A / D converted by the A / D converter 604 to the first buffer 606 when the even field signal is output from the synchronization separation circuit 602. When an odd field signal is output from the sync separation circuit 602, the data A / D converted by the A / D converter 604 is output to the second buffer 607. That is, the multiplexer 605 switches the output destination for each type of captured image data, and the first captured image data is output to the first buffer 606 and the second captured image data is output to the second buffer 607. It will be. The first captured image data in the first buffer 606 is input to the display control unit 609, and the second captured image data in the second buffer 607 is resized by the resizer 608 and then input to the display control unit 609.
The display control unit 609 performs control so that the first captured image data of the first buffer 606 and the second captured image data of the second buffer 607 are displayed on the monitor 610 at the same time, and the monitor 610 performs the display as shown in FIG. The first captured image data is large and the second captured image data is small and displayed simultaneously.

If the resident presses the call button 61 of the room master device 60 and responds while the room master device 60 is in the calling state, the door station device 40 and the room master device 60 are in a call state.
When the resident presses the display switching button 62 of the living room parent device 60 in the calling state or in this calling state, the multiplexer 605 and the display control unit 609 display image data displayed on the monitor 610 of the living room parent device 60 as the first image data. When the control for switching to only one captured image data or only the second captured image data is executed and the resident presses the display switching button 62, the first captured image data and the second captured image data are displayed simultaneously. Displayed image data is switched between display of captured image data only and display of second captured image data only. When only the second captured image data is displayed, the multiplexer 605 switches the output destination so that the second captured image data is output to the first buffer 606, and the display control unit 609 displays the image in the first buffer 606. It is configured to display data.

According to the apartment house intercom system 2 of the present embodiment, the captured image data (analog signals) of the plurality of cameras 401 and 501 can be transmitted through one transmission line L4 as in the first embodiment, and the living room parent The captured image data of a plurality of cameras 401 and 501 can be easily displayed simultaneously on the monitor 610 of the machine 60.
In addition, the apartment house intercom system 2 is the same as the first embodiment in that it may have a plurality of entrance cameras 50.

  In addition, the entrance cordless handset (or collective entrance machine) and entrance camera installed at the entrances of the residential intercom system 1 and the collective housing intercom system 2 described above may be configured as shown in FIG.

As shown in FIG. 5, the entrance slave unit (or the collective entrance unit) 80 installed at the entrance F includes a camera 801 for imaging a visitor and a second captured image that is data captured by the camera 801. A transmission unit 802 that transmits data to the entrance camera 90 via the transmission line L6.
The entrance camera 90 includes a first A / D converter 902 that performs A / D conversion on first captured image data that is data captured by the camera 901, and a first A / D converter 902 that has been A / D converted by the first A / D converter 902. 1st buffer 903 for buffering 1 captured image data, 1st transmission part 904 which receives the 2nd captured image data transmitted from transmission part 802 of entrance cordless handset (or collective entrance) 80, and this A second A / D converter 905 for A / D converting the second captured image data, and a second buffer 906 for buffering the second captured image data A / D converted by the second A / D converter 905; A timing generation circuit 907 that generates timing based on a predetermined signal included in the output of the camera 901, and a timing generated by the timing generation circuit 907 Based on the A / D converted first captured image data of the first buffer 903 or the A / D converted second captured image data of the second buffer 906, the multiplexer 908 that sequentially switches and outputs the first captured image data is output from the multiplexer 908. A D / A converter 909 that D / A converts the data that has been received, and a data (analog signal) that is output from the D / A converter 909 can be transmitted to a not-shown room master unit or control device. And a transmission unit 910.

  Even with the entrance slave unit (or the collective entrance unit) 80 and the entrance camera 90 having the above-described configuration, a plurality of cameras 801 and 901 are connected from the entrance slave unit (or the collective entrance unit) 80 to the living room master unit side by one transmission line. Captured image data can be transmitted.

  1,100 ··· Housing intercom system, 2,200 · · Housing complex intercom system, 10, 80, 120 ·· Entrance door unit, ··· Call button, 20, 50, 90, 130, 230 · · Entrance camera, 30, 60, 140, 240 ... Master unit, 31, 61 ... Call button, 32, 62 ... Display switching button, 40, 220 ... Collective entrance machine, 41 ... Operation part, 42 ... Display part 70, 250..., 101, 121, 131, 201, 221, 231, 401, 501, 801, 901, .., camera, 102, 105, 304, 402, 405, 604, 902, 905,. / D converter (Nth data conversion means, data conversion means), 103, 106, 306, 307, 403, 406, 606, 607, 903, 90 ..104,110,122,132,141,142,202,222,232,241,251,252,253,301,404,410,502,601,701,703,802,904,910 Transmission unit 107, 303, 407, 603, 907 Timing generation circuit 108, 305, 408, 605, 908 Multiplexer (switching means, output destination switching means) 109, 409, 909 D A conversion unit (D / A data conversion means), 144, 254... Control unit, 302, 602... Sync separation circuit, 308, 608 .. Resizer, 309, 609 .. Display control unit, 143, 242, 310 610, Monitor, 702 Exchange control unit, A, S, F, Entrance, C, P, Condominium entry Nsu, D, Q · · duplexer, B, E, T, R ·· the dwelling unit.

Claims (7)

An entrance child machine installed at the entrance of the house and having a function of calling a visitor and a camera for imaging a visitor; and one or more entrance cameras installed at the entrance for imaging the visitor; In a residential intercom system having a function and a monitor that is installed in the house and responds to a call from the entrance cordless handset,
The entrance cordless handset is
First data conversion means for A / D converting first captured image data which is data captured by the camera;
N-th data conversion means for A / D converting N-th captured image data (N is an integer of 2 or more) which is data captured by the one or more entrance cameras;
A first buffer for buffering the first captured image data A / D converted by the first data conversion means;
An Nth buffer for buffering the Nth captured image data A / D converted by the Nth data conversion means;
Based on the timing at which a predetermined signal included in the output of the camera is output from the camera, the A / D converted first captured image data of the first buffer or the A / D conversion of the Nth buffer. Switching means for sequentially switching and outputting the Nth captured image data;
D / A data conversion means for D / A converting the data output from the switching means;
Data transmission / reception means capable of transmitting data output from the D / A data conversion means to the room master unit,
Residential intercom system. One or more entrances having a camera installed at the entrance of a house and having a camera for capturing a visitor and a function for calling a resident, and a camera installed at the entrance for capturing an image of the visitor In a house intercom system having a camera and a room base unit provided with a function and a monitor that is installed in the house and responds to a call from the entrance cordless handset,
One of the entrance cameras is
First data conversion means for A / D converting first captured image data which is data captured by the camera;
N-th data conversion means for A / D converting N-th captured image data (N is an integer of 2 or more) which is data captured by the camera of the entrance cordless handset or another entrance camera;
A first buffer for buffering the first captured image data A / D converted by the first data conversion means;
An Nth buffer for buffering the Nth captured image data A / D converted by the Nth data conversion means;
Based on the timing at which a predetermined signal included in the output of the camera is output from the camera, the A / D converted first captured image data of the first buffer or the A / D conversion of the Nth buffer. Switching means for sequentially switching and outputting the Nth captured image data;
D / A data conversion means for D / A converting the data output from the switching means;
Data transmission / reception means capable of transmitting data output from the D / A data conversion means to the room master unit,
Residential intercom system. The room master is
Data transmitting and receiving means capable of receiving data transmitted from the entrance cordless handset or the entrance camera;
Signal separating means for separating the predetermined signal from data received by the data transmitting / receiving means;
Data conversion means for A / D converting the data received by the data transmission / reception means, and converting the received data into first captured image data or Nth captured image data;
An output destination switching unit for switching an output destination for each captured image data by switching an output destination of data output from the data conversion unit based on a timing at which the predetermined signal is output from the signal separation unit; ,
A first buffer for buffering the first captured image data output from the output destination switching means;
An Nth buffer for buffering the Nth captured image data output from the output destination switching means;
Display control means capable of controlling the monitor so that at least two of the first captured image data of the first buffer to the Nth captured image data of the Nth buffer are simultaneously displayed; Have
The residential intercom system according to claim 1 or 2. The entrance cordless machine is a collective entrance machine installed at the entrance of the apartment house,
The living room master is installed in each dwelling unit of the apartment house,
The residential intercom system further includes a control device that controls the collective entrance machine, the one or more entrance cameras, and the living room master unit,
The data transmission / reception means of the collective entrance machine or the entrance camera is configured to output a signal output from the D / A data conversion means to the control device,
The control device transmits a signal received from the data transmission / reception means of the collective entrance machine or the entrance camera to a predetermined living room parent device as a transmission destination, thereby outputting a signal output from the D / A data conversion means Is configured to output from the collective entrance machine or the entrance camera to the predetermined living room master unit,
The residential intercom system according to any one of claims 1 to 3. The predetermined signal is a field signal or a vertical synchronization signal output from the camera.
The residential intercom system according to any one of claims 1 to 4. The living room master further includes a resizer for resizing at least one data of the first buffer to the Nth buffer,
The residential intercom system according to any one of claims 1 to 5. The living room master further has a display switching button for switching the display of the monitor,
The display control means changes image data displayed on the monitor each time the display switching button is operated.
The residential intercom system according to any one of claims 1 to 6.

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