JP5307577B2 - Intercom device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transmit image data of a plurality of systems photographed by a plurality of cameras from an entrance phone extension with a camera to a room-main-phone simultaneously. <P>SOLUTION: In an entrance phone extension 10 with a camera of an intercom device 1, timings of image data output from a camera 101, a first extension camera 40 and a second extension camera 50 are synchronized and output one by one, resolution of the output image data is changed, compressed by JPEG encoder and transmitted to a room-main-phone 20 providing header information such as resolution. Consequently, image data of a plurality of systems photographed by a plurality of cameras can be transmitted from the entrance phone extension 10 with a camera to the room main phone 20 simultaneously. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an intercom apparatus including a camera-equipped entrance slave unit and a living room master unit.

Conventionally, an intercom device 61 having a configuration as shown in FIG. 4 is known. This intercom device 61 includes an entrance slave device 70 with a camera and a room master device 80 that can receive a video signal transmitted from the entrance slave device 70 with a camera and project the received video signal on a monitor. Yes.
The entrance slave device 70 with a camera is used to call a resident and is mainly installed at the entrance of a dwelling unit. The room master unit 80 is used to respond to calls from the camera-equipped slave unit 70 and is installed in the dwelling unit. The camera-equipped entrance slave unit 70 and the room master unit 80 are connected via a transmission line 100. The room master unit 80 is connected to a wireless terminal 90 on which images from the camera-equipped door unit 70 are wirelessly transmitted from the room master unit 80 and displayed. The wireless terminal 90 can be carried by a resident and can respond to calls from the camera-equipped entrance slave device 70.

JP 2004-260390 A JP 2001-128157 A

  The intercom device with camera 70 of the intercom device 61 includes a camera 701 that images a visitor, a JPEG encoder 702 that compresses a digital video signal output from the camera 701, and JPEG data compressed by the JPEG encoder 702. Is transmitted to the living room base unit 80.

  The room master unit 80 of the intercom device 61 includes a transmission unit 801 for receiving the JPEG data transmitted from the transmission unit 703 of the camera-equipped entrance slave unit 70, a JPEG decoder 802 for decompressing the received JPEG data, A monitor 803 for displaying an image of the digital video signal expanded by the JPEG decoder 802, a JPEG encoder 804 for compressing the digital video signal expanded by the JPEG decoder 802, and the JPEG data compressed by the JPEG encoder 804 as a wireless terminal 90, a wireless module 805 for wireless transmission.

  The wireless terminal 90 includes a wireless module 901 that receives JPEG data wirelessly transmitted from the room master unit 80, a JPEG decoder 902 that decompresses JPEG data received by the wireless module 901, and digital video decoded by the JPEG decoder 902. And a monitor 903 for displaying signals.

In the interphone device 61 as described above, the digital video signal imaged and generated by the camera 701 of the camera-equipped entrance unit 70 is compressed by the JPEG encoder 702 to become compressed image data, that is, JPEG data. The data is transmitted from the transmission unit 703 of 70 through the transmission line 100 to the transmission unit 801 of the office master unit 80.
The JPEG data transmitted to the room master unit 80 is input from the transmission unit 801 to the JPEG decoder 802 and decompressed into a digital video signal. The image of the digital video signal is input to the monitor 803 and displayed.
The expanded digital video signal is compressed into JPEG data by the JPEG encoder 804 and wirelessly transmitted from the wireless module 805 to the wireless terminal 90.
The JPEG data wirelessly transmitted from the wireless module 805 of the office master 80 to the wireless module 901 of the wireless terminal 90 is decompressed by the JPEG decoder 902, and the decompressed image data is input to the monitor 903 and displayed.

  In the intercom device 61 having such a configuration, image data captured by the camera 701 of the camera-equipped entrance slave unit 70, that is, one system of image data captured by one camera, is transferred from the camera entrance slave unit 70 to the room master unit. Since it is premised on transmission to 80, it is impossible to simultaneously transmit image data of a plurality of systems captured by a plurality of cameras, such as when an additional camera is connected to the entrance slave device with camera 70.

  An object of the present invention is to simultaneously transmit a plurality of sets of image data captured by a plurality of cameras from an entrance slave unit with a camera to a living room master unit.

  In order to solve this problem, the present inventor proposes the following intercom apparatus.

The intercom apparatus of the present application is used in connection with a camera for capturing a visitor and a camera-equipped slave unit having a function of calling a resident, and the camera-based entrance slave unit for imaging a visitor. One or more additional cameras, a monitor that displays the captured image of the camera or the additional camera of the camera-equipped cordless handset, and a room master device that has a function of responding to a call from the camera-equipped cordless handset, Is an intercom device having
The intercom apparatus with the camera has a camera-equipped entrance slave unit that outputs image data output from the camera and the additional camera in synchronization with each other in order, and changes the resolution of the image data output from the output unit. A resolution changing unit, a data compressing unit for compressing the image data whose resolution has been changed by the resolution changing unit, and a header including additional information such as a resolution to the compressed image data output from the data compressing unit. A header assigning unit, and the base unit includes an output destination switching unit that switches an output destination of the image data based on a header of the image data received from the entrance unit with the camera. Yes.
The intercom device with a camera-equipped entrance slave unit outputs the image data output from a plurality of cameras in synchronization with each other in order, processes the output image data, and transmits the processed image data to the room master unit. Therefore, a plurality of systems of image data captured by a plurality of cameras can be transmitted from the camera-equipped entrance slave unit to the living room master unit.
Further, the room base unit of this intercom apparatus has an output destination switching means for switching the output destination of the image data based on the header of the image data received from the camera-side entrance handset. Since the output destination is automatically switched according to the use of the image data received from the room, the CPU of the living room master needs data according to the use such as image data for recording and image data for transmission. Therefore, it is not necessary to generate the data every time, and the processing load on the CPU of the room master can be reduced.
The header added to the compressed image data by the header adding unit of the entrance unit with the camera is not limited to the resolution information of the data, but is information such as an application used in the room master unit and camera identification information. May be.

The resolution changing means of the camera-equipped entrance cordless handset of the intercom apparatus has a first resolution which is a predetermined resolution for displaying the resolution of the image data output from the output means on the monitor of the living room master unit, and a resolution that differs from the first resolution, the first resolution at least one of the N resolution for use in the image data with different applications of (N is an integer of 2 or more) was changed to the room The output destination switching means of the master unit outputs the first resolution image data to the first output destination, and the Nth resolution image data is different from the first output destination, and is at least one Nth. May be output to the output destination.
With such an intercom device, it is possible to change to image data having a resolution suitable for the monitor of the living room master and image data having a resolution suitable for use in other applications such as display on a wireless terminal.

When the image data output from the output destination switching unit to the first output destination includes image data from a plurality of cameras, the living room base unit generates image data of one screen from the image data. It may further include a multi-screen display control unit.
According to the living room master having such a multi-screen display control unit, it is possible to generate one-screen image data from image data of a plurality of cameras, thereby monitoring a visitor image captured from a plurality of angles. Can be displayed simultaneously.

The living room base unit changes the number of transfer frames of the N-th resolution image data output from the output destination switching unit to the N-th output destination to a predetermined number of frames, and then transmits it to the wireless terminal. The frame rate control unit may be further included.
If such a frame rate control unit is provided, the image data can be transmitted to the wireless terminal after the number of transfer frames of the image data is changed to the number of frames suitable for the wireless terminal to transfer.

The living room master unit further includes a recording unit that records the image data output from the output destination switching unit, and the recording unit is output from the output destination switching unit to the first output destination. The image data or the image data output to the Nth output destination may be recorded.
According to the room master unit having such a recording unit, the same image data as the image data displayed on the monitor of the room master unit or the image data different from the image data displayed on the monitor of the room master unit is recorded. be able to.

The intercom device has a first extension camera and a second extension camera,
The resolution changing means of the camera-equipped entrance slave unit sets the resolution of the image data from the camera of the entrance slave unit with the camera to the first resolution and the resolution of the image data from the first extension camera to the second resolution. The resolution of the image data from the second additional camera is changed to the third resolution, and the output destination switching means of the living room base unit is the first resolution image data, the second resolution image data, or the second resolution Each of the three-resolution image data is output to any one of the first output destination, the second output destination, and the third output destination, and the room master unit outputs the image output to the first output destination. Data is displayed on the monitor, image data output to the second output destination is recorded in a recording unit, and image data output to the third output destination is transmitted to a wireless terminal. Also good.
According to such an intercom apparatus, for example, image data captured by a camera of a camera-equipped entrance unit is displayed data, image data captured by a first extension camera is recorded, and data is recorded by a second extension camera. The captured image data can be used as data for transfer to the wireless terminal.

Moreover, the inventor of the present application proposes the following entrance slave unit with a camera.
The camera-equipped entrance cordless handset of the present application has a function of calling a camera and a resident to be used for imaging a visitor, which is used in combination with one or more additional cameras for capturing a visitor and a parent unit. . The living room master unit has a monitor that displays a captured image of the camera or the additional camera of the camera-equipped entrance slave unit and a function that responds to a call from the camera entrance slave unit. The output means for sequentially outputting the timing of the image data output from the camera and the additional camera, the resolution changing means for changing the resolution of the image data output from the output means, and the resolution and data compression means for resolution is to compress the changed image data by the changing means, wherein the compressed image data output from the data compression means, possess a header adding means for adding a header including additional information such as the resolution, the The living room master unit is configured to store the image data based on a header of the image data received from the camera entrance unit. And an output destination switching means for switching the power destination.
By using such an entrance slave unit with a camera, as described above, image data of a plurality of systems captured by a plurality of cameras can be transmitted from the entrance slave unit with a camera to a living room master unit.

The resolution changing unit of the camera-equipped entrance slave unit has a first resolution which is a predetermined resolution for displaying the resolution of the image data output from the output unit on the monitor of the living room master unit, and the first a resolution that different from the resolution, the first resolution at least one of the N resolution for use in the image data with different applications of (N is an integer of 2 or more) be adapted to changes in the Good.

  ADVANTAGE OF THE INVENTION According to this invention, the image data of several systems imaged with the some camera can be simultaneously transmitted from the entrance child machine with a camera to a living room main | base station.

The figure which shows the whole structure of the intercom apparatus of this embodiment. The figure which shows the order of the image data output from the resolution change part of the subunit | mobile_unit with a camera of this embodiment. The figure which shows the order of the JPEG data transmitted from the transmission part of the subunit | mobile_unit with a camera of this embodiment. The figure which shows the whole structure of the conventional intercom apparatus.

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

The intercom apparatus 1 according to this embodiment is schematically configured as shown in FIG. The intercom apparatus 1 includes an entrance slave unit 10 with a camera, a living room master unit 20 that receives a video signal transmitted from the entrance slave unit 10 with a camera, and displays the received video signal on a monitor, and an entrance with a camera. A wireless terminal 30 on which an image from the child device 10 is wirelessly transmitted and displayed from the living room parent device 20 and a first additional camera 40 and a second additional camera 50 for capturing a visitor are included.
The entrance unit 10 with a camera is used to call a resident and is mainly installed at the entrance of a dwelling unit. The room master 20 is used for responding to calls from the camera-equipped entrance slave 10 and is installed in the dwelling unit. The camera-equipped entrance slave unit 10 and the room master unit 20 are connected via a transmission line 60. The wireless terminal 30 can be carried by a resident and can respond to calls from the camera-equipped entrance cordless handset 10, and is appropriately used at an appropriate location in the dwelling unit. In addition, the first extension camera 40 and the second extension camera 50 are installed at the entrance of the dwelling unit, and are connected to the entrance slave unit 10 with a camera.

  Hereinafter, configurations of the camera-equipped entrance slave device 10, the living room master device 20, and the wireless terminal 30 to which the first extension camera 40 and the second extension camera 50 are connected will be described. First, the configuration of the camera-equipped entrance slave unit 10 will be described.

  The entrance unit 10 with a camera includes a camera 101 that captures a visitor, a first additional camera IF 102a, a second additional camera IF 102b, a first multiplexer 103, a resolution changing unit 104, a JPEG encoder 105, and image data. The header adding unit 106, the second multiplexer 107, the buffer 108, and the transmission unit 109 are provided.

The camera 101 images a visitor. The first extension camera IF 102a and the second extension camera IF 102b are interfaces for connecting to the first extension camera 40 and the second extension camera 50, respectively, and images output from the first extension camera 40 and the second extension camera 50 are respectively. Receive data.
The first multiplexer 103 synchronizes the timing of the image data output from the camera 101, the first additional camera IF 102a, or the second additional camera IF 102b at different timings, and sequentially outputs them to the resolution changing unit 104. Yes.

The resolution changing unit 104 changes the resolution of the input image data to a predetermined resolution. In this embodiment, the image data from the camera 101 is changed to image data having the first resolution, and the first additional camera 40 is changed. The image data from the second extension camera 50 is changed to the image data of the first resolution, and the image data from the second additional camera 50 is changed to the image data of the second resolution. In the present embodiment, the first resolution corresponds to the image size of the monitor in the living room master unit 20 and is QVGA. In the present embodiment, the second resolution corresponds to the image size of the monitor of the wireless terminal 30 and is VGA.
The JPEG encoder 105 compresses the image data output from the resolution changing unit 104 and encodes the compressed image data, that is, JPEG data.
The image data header giving unit 106 gives JPEG data output from the JPEG encoder 105 with additional information such as information about the resolution and the output destination in the room master unit 20 and camera identification information.

  The second multiplexer 107 switches the output destination of the JPEG data with header information output from the image data header adding unit 106. In the present embodiment, the first resolution is sent to the transmission unit 109 serving as the first output destination. The output destination of the JPEG data with header information is switched so that the JPEG data with header information is output and the JPEG data with header information of the second resolution is output to the buffer 108 as the second output destination. Yes.

The buffer 108 temporarily stores the JPEG data with header information of the second resolution input from the second multiplexer 107.
The transmission unit 109 transmits the JPEG data with header information input from the second multiplexer 107 and the JPEG data with header information input from the buffer 108 to the room base unit 20 via the transmission line 60.

The base unit 20 includes a transmission unit 201, a third multiplexer 202, a frame rate control unit 203, a serial communication unit 204, a wireless module 205, a JPEG decoder 206, a multi-screen display control unit 207, and a monitor 208. And a recording control unit 209 and a recording medium 210.
The transmission unit 201 receives a signal including JPEG data with header information transmitted from the entrance unit 10 with a camera via the transmission line 60.
The third multiplexer 202 switches the output destination of the JPEG data with header information received by the transmission unit 201, and the JPEG data with header information is one of the frame rate control unit 203, the JPEG decoder 206, and the recording control unit 209. Output to.

The frame rate control unit 203 changes the number of transfer frames of JPEG data with header information output from the third multiplexer 202 to a predetermined number of frames.
The serial communication unit 204 controls transmission of JPEG data with header information output from the third multiplexer 202.
The wireless module 205 is for wirelessly transmitting JPEG data with header information to the wireless terminal 30.

The JPEG decoder 206 decompresses JPEG data with header information output from the third multiplexer 202 and outputs image data.
When the image data input from the JPEG decoder 206 includes image data from a plurality of cameras, the multi-screen display control unit 207 generates one-screen image data from these image data.
The monitor 208 displays the image data from the multi-screen display control unit 207.

The recording control unit 209 performs recording control of JPEG data with header information output from the third multiplexer 202.
The recording medium 210 stores JPEG data with header information under the control of the recording control unit 209.

  The wireless terminal 30 receives a signal including header information-added JPEG data wirelessly transmitted from the living room master unit 20, and decompresses the header information-added JPEG data received by the wireless module 301 into a digital video signal. A JPEG decoder 302 for decoding and a monitor 303 for displaying a digital video signal decoded by the JPEG decoder are provided.

  Next, the operation of the intercom device 1 configured as described above will be described. However, since the operation of the intercom apparatus 1 that calls the room base unit 20 from the camera-equipped main unit 10 and the response operation by the room base unit 20 is the same as the conventional one, the description is omitted here. The following description focuses on the flow of signals output from the camera 101, the first extension camera 40, and the second extension camera 50 based on the calling operation of the camera-equipped entrance slave unit 10.

Image data captured and generated by the camera 101 of the camera-equipped entrance slave 10 is input to the first multiplexer 103. In addition, image data captured and generated by the first extension camera 40 and the second extension camera 50 are input to the first multiplexer 103 via the first extension camera IF 102a and the second extension camera IF 102b, respectively.
The first multiplexer 103 synchronizes the timings of image data output at different timings from the camera 101, the first additional camera IF 102a, or the second additional camera IF 102b, and sequentially outputs them to the resolution changing unit 104.

The resolution changing unit 104 converts the input image data from the camera 101 into image data with the first resolution (QVGA), and the image data from the first additional camera 40 into image data with the first resolution (QVGA). The image data from the second extension camera 50 is changed to image data of the second resolution (VGA) and output.
Specifically, as shown in FIG. 2, the image data A is image data from the camera 101, the image data B is image data from the first additional camera 40, and the image data is from the second additional camera 50. The image data C is output from the resolution changing unit 104 in order. The image data output from the resolution changing unit 104 is input to the JPEG encoder 105.

The JPEG encoder 105 compresses the image data whose resolution has been changed by the resolution changing unit 104 and encodes it into JPEG data.
The JPEG data is input to the image data header adding unit 106, and additional information such as the resolution and the output destination in the office master 20 is added. This JPEG data with header information is input to the second multiplexer 107.

The second multiplexer 107 switches the output destination of the JPEG data with header information received from the image data header adding unit 106, and the JPEG with header information input from the image data header adding unit 106 to the second multiplexer 107. The data is output to either the transmission unit 109 serving as the first output destination or the buffer 108 serving as the second output destination. Specifically, JPEG data with header information of the first resolution (QVGA) is output to the transmission unit 109, and JPEG data with header information of the second resolution (VGA) is output to the buffer 108. It can be switched.
Thereby, the image data from the camera 101 and the first additional camera 102a is output to the transmission unit 109, and the image from the second additional camera 102b having a data size larger than the image data from the camera 101 and the first additional camera 102a. The data is not output to the transmission unit 109 as it is, but is output to the buffer 108 and then output to the transmission unit 109. In this embodiment, the JPEG data with header information output from the second multiplexer 107 to the first output destination and the second output destination are both output at a frame rate of 20 fps.

The JPEG data with header information output from the second multiplexer 107 is transmitted from the transmission unit 109 to the room master unit 20 via the transmission line 60.
The transmission unit 109 can be configured to divide the JPEG data with header information in the buffer 108 into at least two parts and transmit it to the room master unit 20. In the present embodiment, the JPEG data with header information in the buffer 108 is divided into three parts and transmitted to the room master unit 20, and the JPEG data with header information output to the first output destination is 20 fps. During transmission at the frame rate, the JPEG data with header information output to the second output destination is divided into three and transmitted at a frame rate of 20/3 fps.
Specifically, as shown in FIG. 3, the transmission unit 109 includes image data A that is image data from the camera 101 output to the first output destination, and the first extension output to the first output destination. First JPEG data obtained by dividing the image data B, which is image data from the camera 40, and the image data C, which is image data from the second additional camera 50 output to the second output destination, into three parts ((1) in the figure). ), Image data A which is image data from the camera 101 output to the first output destination, image data B which is image data from the first additional camera 40 output to the first output destination, and second Second JPEG data ((2) in the figure) obtained by dividing the image data C, which is image data from the second additional camera 50 output to the output destination, into three parts, and from the camera 101 output to the first output destination. Image data that is image data Three image data B, which is image data from the first additional camera 40 output to the first output destination, and image data C, which is image data from the second additional camera 50, output to the second output destination. The divided third JPEG data ((3) in the figure)... Is transmitted in this order.
As described above, the transmission unit 109 of the camera-equipped entrance slave device 10 according to the present embodiment divides and transmits the JPEG data with the header information in the buffer 108, so that the JPEG output to the second output destination is transmitted. The amount of data per image can be made larger than the JPEG data output to the first output destination, and a fine image can be transmitted to the room master unit 2.

The JPEG data with header information transmitted from the front door 10 to the living room master 20 via the transmission line 60 is received by the transmission unit 201. The JPEG data received by the transmission unit 201 is input to the third multiplexer 202.
The third multiplexer 202 switches the output destination of the JPEG data received from the transmission unit 201 based on the header information of the input JPEG data, and the frame rate control unit 203, the JPEG decoder 206, or the recording control The JPEG data is output to one of the units 209. As a result, the JPEG data input to the third multiplexer 202 is distributed to any of the JPEG data for transmission to the wireless terminal 30, the JPEG data for display, or the JPEG data for recording.
Specifically, in this embodiment, JPEG data of the second resolution (VGA) is output to the frame rate control unit 203, and JPEG data of the first resolution (QVGA) is output to the multi-screen display control unit 207 or the recording control. Is output to the unit 209. That is, the image data from the second extension camera 50 is JPEG data for transmission to the wireless terminal 30, the image data from the camera 101 and the image data from the first extension camera 40 are JPEG data for display or JPEG for recording. It can be distributed to data.
In this embodiment, JPEG data for display is output at a frame rate of 30 fps, JPEG data for recording is output at a frame rate of 10 fps, and JPEG data for transmission is output at a frame rate of 10 fps or less. The

The JPEG data input from the third multiplexer 202 to the frame rate control unit 203 is changed in the number of transfer frames to a predetermined number of frames suitable for the wireless terminal 30, and is transmitted from the wireless module 205 to the wireless terminal via the serial communication unit 204. 30 is wirelessly transmitted.
The JPEG data wirelessly transmitted from the wireless module 205 of the living room master unit 20 to the wireless module 301 of the wireless terminal 30 is expanded by the JPEG decoder 302, and the expanded image data is input to the monitor 303 and displayed.

On the other hand, the JPEG data input from the third multiplexer 202 to the JPEG decoder 206 is decompressed by the JPEG decoder 206 and input to the multi-screen display control unit 207. In the present embodiment, since the image data input from the JPEG decoder 206 includes image data from a plurality of cameras, the multi-screen display control unit 207 generates one-screen image data from these image data. To do. This image data is input to the monitor 208 and displayed. That is, the monitor 208 simultaneously displays visitor images taken from a plurality of angles.
In this embodiment, JPEG data of the first resolution (QVGA) from a plurality of cameras is distributed by the third multiplexer 202 as display data, but a plurality of resolutions from a plurality of cameras is used. JPEG data may be distributed as display data.

  The JPEG data input from the third multiplexer 202 to the recording control unit 209 is recorded on the recording medium 210.

The entrance cordless handset 10 with the camera of the intercom apparatus 1 according to the present embodiment as described above sequentially outputs the image data output from a plurality of cameras in synchronism with each other, and processes the output image data. Since the interphone device 1 according to the present embodiment is configured to transmit the image data to the master unit 20, the image data of a plurality of systems captured by the plurality of cameras is simultaneously transmitted from the camera-equipped entrance slave unit 10 to the room master unit 20. Can be transmitted.
Further, the room master unit 20 of the intercom apparatus 1 according to the present embodiment automatically switches the output destination of the image data based on the header of the image data received from the camera-equipped entrance slave unit 10. The CPU of the living room parent device 20 does not need to generate data corresponding to the application such as recording image data or transmission image data every time, and the processing load on the CPU of the living room parent device 20 is reduced. Can be reduced.
In addition, since the living room master 20 of the intercom device 1 according to the present embodiment includes the above-described multi-screen display control unit 206, when image data from a plurality of cameras is included in the display image data, One-screen image data can be generated from the image data, and thus, a visitor image captured from a plurality of angles can be simultaneously displayed on the monitor.
Furthermore, since the room master unit 20 of the intercom apparatus 1 of the present embodiment has the above-described frame rate control unit, the number of transfer frames of image data is changed to the number of frames suitable for the wireless terminal 30 to transfer. Image data can be transmitted to the wireless terminal.

  In the present embodiment described above, the resolution changing unit 104 of the camera-equipped entrance slave unit 10 sets the resolution of the image data from the camera 101, the first additional camera 40, and the second additional camera 50 to the first resolution and the second resolution. However, the present invention is not limited to this, and the resolutions of the image data from the first additional camera 40 and the second additional camera 50 are all changed to the same resolution. Alternatively, it may be changed to three or more resolutions according to the application.

Further, the multiplexer 202 of the living room master 20 of the intercom apparatus 1 according to the present embodiment outputs the JPEG data from the transmission unit 201 to any of the frame rate control unit 203, the JPEG decoder 206, or the recording control unit 209. However, the present invention is not limited to this, and may be output to one or more other output destinations. For example, the JPEG data can be distributed from the third multiplexer 202 to Ethernet (registered trademark). The JPEG data distributed to the Ethernet (registered trademark) may be input to the server via, for example, a hub.
Further, the resolution changing unit 104 has a first resolution which is a predetermined resolution for displaying the resolution of the image data output from the first multiplexer 103 on the monitor 208 of the living room master unit 20, and wirelessly unlike the first resolution. It may be configured to change to at least one Nth resolution (N is an integer of 2 or more) for use in other applications such as display on the terminal 30. In this case, the third multiplexer 202 of the living room master unit 20 outputs the first resolution image data to the JPEG decoder 206, and outputs the Nth resolution image data to the frame rate control unit 203, the recording control unit 209, or another If the data is output to one or more output destinations, the image data can be distributed according to the application.

The resolution changing unit 104 also sets the resolution of the image data from the camera 101 of the camera-equipped entrance slave unit 10 to the first resolution, the resolution of the image data from the first additional camera 40 to the second resolution, and the second additional camera. 50, the resolution of the image data from 50 is changed to the third resolution, and the third multiplexer 202 of the living room base unit 10 receives the first resolution image data, the second resolution image data, or the third resolution. Each of the image data may be output to any of the JPEG decoder 206, the recording control unit 209, or the frame rate control unit 203.
According to the intercom apparatus having such a configuration, for example, image data captured by the camera 101 of the camera-equipped entrance unit 10 is displayed data, image data captured by the first additional camera 40 is recorded, and Image data captured by the second extension camera 50 can be used as data for transfer to the wireless terminal 30.

  Further, although the recording control unit 209 of the living room master unit 20 of the present embodiment has been described as recording the image data output from the third multiplexer 202 to the recording control unit 209 as data for recording, the present invention is not limited thereto. Alternatively, the display image data output from the third multiplexer 202 to the JPEG decoder 206 may be recorded, or the wireless terminal transmission output from the third multiplexer 202 to the frame rate control unit 203 may be used. The image data may be recorded. That is, the recording control unit 209 records the same image data as the image data displayed on the monitor 208 of the office master 20 or different image data from the image data displayed on the monitor 208 of the office master 20. can do.

  In the present embodiment, it is described that the image data of one screen generated by the multi-screen display control unit 207 of the living room base unit 20 is displayed on the monitor 208. One of the plurality of image data may be displayed on the monitor 208.

  In this embodiment, an example in which JPEG data is generated as compressed image data has been described. However, the present invention is not limited to this, and data in other formats may be used.

1, 61 ·· Interphone device, 10, 70 · · Door unit with camera, 20, 80 · · Base unit, 30, 90 · · Wireless terminal, 40, 50 · · Extension camera, 60, 100 · · Transmission Line, 101, 701 ... Camera, 102a, 102b ... Additional camera IF, 103 ... First multiplexer (output means), 104 ... Resolution change unit (resolution change means), 105, 702, 804 ... JPEG encoder (Data compression means), 106... Image data header assigning section (Header attaching means), 107... Second multiplexer, 108... Buffer, 109, 201, 703, 801. (Output destination switching means), 203... Frame rate control unit, 204... Serial communication unit, 205, 301, 805, 901. · Wireless module, 206, 302, 802, 902 · · JPEG decoder, 207 · · Multi-screen display control unit, 208, 303, 803, 903 · · Monitor, 209 · · Recording control unit, · · · Recording medium

Claims (8)

Entrance camera with camera having a function for capturing a visitor and a function for calling a resident, and one or more additional cameras for imaging a visitor connected to the entrance with a camera. And an intercom apparatus having a monitor that displays a captured image of the camera or the additional camera of the camera entrance slave unit and a function of responding to a call from the camera entrance slave unit,
The camera-equipped entrance cordless handset is an output means for sequentially outputting the image data output from the camera and the additional camera in synchronization with each other.
Resolution changing means for changing the resolution of the image data output from the output means;
Data compression means for compressing the image data whose resolution has been changed by the resolution changing means;
Header giving means for giving a header including additional information such as resolution to the compressed image data output from the data compression means,
The living room master unit has an output destination switching means for switching an output destination of the image data based on a header of the image data received from the entrance unit with camera.
Intercom device. The resolution changing unit of the camera-equipped entrance slave unit has a first resolution that is a predetermined resolution for displaying the resolution of the image data output from the output unit on the monitor of the living room master unit, and the first resolution. a preparative different that resolution, at least one of the N resolution for use in different applications and image data of the first resolution (N is an integer of 2 or more) was changed to,
The output destination switching means of the living room base unit outputs the first resolution image data to a first output destination, and the N-th resolution image data is different from the first output destination. Output to the Nth output destination,
The intercom apparatus according to claim 1. When the image data output from the output destination switching unit to the first output destination includes image data from a plurality of cameras, the living room base unit generates image data of one screen from the image data. A multi-screen display control unit;
The intercom apparatus according to claim 1 or 2. The living room base unit changes the number of transfer frames of the N-th resolution image data output from the output destination switching unit to the N-th output destination to a predetermined number of frames, and then transmits it to the wireless terminal. A frame rate control unit.
The intercom apparatus according to claim 2. The living room master unit further includes a recording unit that records the image data output from the output destination switching unit,
The recording unit records image data output from the output destination switching unit to the first output destination or image data output to the Nth output destination;
The intercom apparatus according to any one of claims 1 to 4. The intercom device has a first extension camera and a second extension camera,
The resolution changing means of the camera-equipped entrance slave unit sets the resolution of the image data from the camera of the entrance slave unit with the camera to the first resolution and the resolution of the image data from the first extension camera to the second resolution. , Changing the resolution of the image data from the second additional camera to the third resolution,
The output destination switching means of the living room base unit converts the first resolution image data, the second resolution image data, or the third resolution image data into the first output destination and the second output destination, respectively. Or output to one of the third destinations,
The living room master displays the image data output to the first output destination on the monitor, records the image data output to the second output destination on a recording unit, and the third output destination. Send the image data output to the wireless terminal,
The intercom apparatus according to claim 1, 2, or 4. An entrance unit with a camera having a function of calling a resident and a camera for imaging a visitor, used in combination with one or more additional cameras and a living room master for imaging a visitor,
The living room master unit has a function of responding to a call from the camera or the extension device with the camera and a monitor that displays a captured image of the camera or the extension camera of the camera,
The camera-equipped entrance cordless handset is an output means for sequentially outputting the image data output from the camera and the additional camera in synchronization with each other.
Resolution changing means for changing the resolution of the image data output from the output means;
Data compression means for compressing the image data whose resolution has been changed by the resolution changing means;
Header giving means for giving a header including additional information such as resolution to the compressed image data output from the data compression means,
The living room master unit has an output destination switching means for switching an output destination of the image data based on a header of the image data received from the entrance unit with camera.
Entrance cordless handset with camera. The resolution changing means is a predetermined first resolution is a resolution, and the resolution that differs from the first resolution to display the resolution of the output image data on the monitor of the room master station from said output means , Changing to at least one or more N-th resolution (N is an integer of 2 or more) for use in an application different from the image data of the first resolution .
The entrance child machine with a camera according to claim 7.

Images