JP6525859B2 - Intercom device - Google Patents

Description

  The present invention relates to an intercom apparatus in which a visitor can call a resident and make a call, and more particularly to an intercom apparatus provided with a camera for imaging a visitor.

  There is a widespread use of intercom devices in which a camera is provided in a front door slave unit, a visitor is imaged, and the imaged video is displayed on a monitor of a base room in the room to allow residents to confirm the visitor on the video when calling or calling. (See, for example, Patent Document 1).

JP 2004-304558 A

  Conventionally, the combination of the front door slave unit and the room main unit is not limited to one type, and a system equipped with a camera is not an exception, and a plurality of room parent units can be connected to one front door unit. Therefore, depending on the selected base unit in the room, although the resolution of the monitor is low, a wide-angle image with an imaging range of 170 ° in the horizontal direction, for example, may be displayed as it is. In such a case, it is difficult to identify a person because the visitor displayed on the monitor becomes smaller.

  Therefore, in view of such problems, the present invention can transmit an image matched with the monitor resolution of the connected room parent machine from the entrance child machine, and even if the monitor resolution of the room parent machine is low, the visitor can be An object of the present invention is to provide an intercom apparatus capable of displaying an easy-to-check image.

In order to solve the above problems, the invention according to claim 1 has a front door handset for a visitor to call a resident and a living room main phone for a resident to respond to a call from a front door handset. The intercom device is provided with a camera for capturing an image of a visitor on the front door slave unit, and a monitor for displaying a captured image of the camera on the base unit in the living room. A model information storage unit that stores the relationship between the model of the machine and the angle of view of the video to be transmitted, a communication control unit that obtains model information of the room master by communicating with the room master and the picture captured by the camera Control a video signal generation unit for converting into video signals, a slave device video processing unit for generating a video signal of any angle of view below that angle of view based on the video signals, and a video signal to be transmitted to the room parent device A transmission video control unit, and the transmission video control unit At the time of transmission to the room master, control is performed so that the field angle information associated with the obtained room parent is read from the model information storage unit, and a video of the field is generated and transmitted to the child unit video processing unit. It is characterized by
According to this configuration, the angle of view of the image transmitted from the front door slave unit is changed in accordance with the resolution of the monitor of the base unit in the room. That is, the size of the displayed visitor is changed. Therefore, on a small monitor with low resolution, the visitor can be displayed large, and it is easy to confirm the visitor even if the monitor is small.

According to the second aspect of the present invention, in the configuration according to the first aspect, the communication control unit is configured to use the room parent at at least any one of predetermined intervals at the time of power on, at the start of calling, at the start of monitoring, and at the time of standby. It is characterized by obtaining model information from a machine.
According to this configuration, the setting information is not necessary because the model information of the base unit in the room is automatically obtained.

According to the third aspect of the present invention, in the configuration according to the first or second aspect, the transmission video control unit is compatible with a low resolution monitor set in advance when the communication control unit can not obtain model information from the room parent unit. A video of the angle of view is generated by the video processing unit of the slave unit and transmitted.
According to this configuration, when model information can not be obtained from the room room parent machine, a low resolution compatible video is transmitted, so that it is possible to display a video that is easy to check a person regardless of the resolution of the monitor.

  According to the present invention, the angle of view of the image transmitted from the front door slave unit is changed according to the resolution of the monitor. That is, the size of the displayed visitor is changed. Therefore, on a small monitor with low resolution, the visitor can be displayed large, and it is easy to confirm the visitor even if the monitor is small.

It is a block diagram which shows an example of the intercom apparatus which concerns on this invention.

  Hereinafter, embodiments embodying the present invention will be described in detail with reference to the drawings. Fig. 1 is a block diagram of the intercom apparatus according to the present invention, wherein 1 is an entry slave unit installed outside a doorway or the like for a visitor to call a resident, and 2 is installed in a dwelling unit to call a visitor , And both are connected via a transmission line L.

  The front door slave unit 1 includes a camera 11 for imaging a visitor, a video signal generation unit 12 for generating a video signal for transmission to the main room 2 from an image captured by the camera 11, and angle adjustment and modulation of the video signal Remote unit video processing unit 13 that performs processing etc., call button 14, microphone 15a and speaker 15b for calling, audio unit 15 that controls audio signal, association between model of room main unit 2 and angle of view of generated image A storage unit (model information storage unit) 16 for storing the information, a child device CPU 17 for controlling the entry child device 1, a child device IF 18 for communicating with the room parent device 2, and the like are provided.

  The base unit 2 includes a monitor 21 including an LCD for displaying a captured image of the camera 11, a master image processing unit 22 for performing demodulation processing and the like of a video signal transmitted from the entry slave unit 1, and a recording memory for recording an image. 23. A monitor button 24 for activating the camera 11, an operation unit 25 for performing various setting operations, a call button 26 for responding to a call, a microphone 27a and a speaker 27b for making a call, an acoustic unit 27 for controlling an audio signal, a room A base unit CPU 28 that controls the base unit 2 and a base unit IF 29 that communicates with the front door slave unit 1 are provided.

The intercom apparatus configured as described above operates as follows. However, since the call operation for calling the resident by operating the call button 14 and the response operation etc. by the operation of the call button 26 are the same as those in the prior art, the description is omitted. The operation to be displayed on the monitor 21 will be mainly described.
First, when the installation of the intercom apparatus is completed and the power is turned on, the parent device CPU 28 and the child device CPU 17 perform initial setting control. At this time, an inquiry signal asking the model of the room parent machine 2 is transmitted from the entrance child machine 1 to the room parent machine 2 under the control of the child machine CPU 17.
The room parent device 2 receiving this signal sends back the model information set in itself under the control of the parent device CPU 28.

  The timing of transmitting the inquiry signal is not limited to when the power is turned on, and may be, for example, any timing at the time of stand-by, start of calling, or start of monitoring when the monitor button 24 is operated. Furthermore, the own machine type information may be transmitted to the entrance handset 1 under the control of the base unit CPU 28.

The handset CPU 17 that has acquired the model information of the room parent device 2 in this way reads the angle of view information associated with the connected room parent device 2 from the storage unit 16 and processes the child device video when the camera 11 is activated. The image of the angle of view is generated in the section 13.
For example, in the case where the captured image of the camera 11 is a wide-angle image with 170 ° horizontal angle of view (image for which the visitor is displayed in a small size) and the connected base room 2 is equipped with the monitor 21 of resolution WVGA. The storage unit 16 is associated with an angle of view of 170 °, and the image processing unit 13 transmits an image of an angle of view of 170 ° in the horizontal direction generated by the image signal generation unit 12 without changing the angle of view to the room master 2 And displayed on the monitor 21.

On the other hand, when the resolution of the monitor 21 of the base unit 2 is QQ VGA, an angle of view of 120 ° is associated with the storage unit 16 and the image taken in the horizontal direction 170 ° is processed by the image processing unit 13 An image of 120 ° in the horizontal direction (image in which a visitor is displayed large) is generated, and this image is displayed on the monitor 21.
Note that the video with a field angle of 120 ° is a video obtained by enlarging the central portion of the video captured by the camera captured at a field angle of 170 °.

  As described above, the angle of view of the image transmitted from the entry slave unit 1 is changed according to the resolution of the monitor 21. That is, since the size of the visitor to be displayed is changed, the small monitor 21 with low resolution can display the visitor large and it is easy to confirm the visitor even if the monitor 21 is small. Further, in order to automatically obtain the model information of the room parent machine 2, no setting operation is necessary.

  However, when a model that does not have the function to respond to the inquiry signal sent from the entrance slave unit 1 is not connected, a video with a relatively narrow angle of view set in advance is generated. Will be sent. For example, an image of 120 ° in the horizontal direction is generated and transmitted. As a result, when the model information can not be obtained from the main room 2 of the room, by transmitting a video with a narrow angle of view, it is possible to display a video that is easy to check a person regardless of the resolution of the monitor 21.

  Although the above embodiment has described the case of transmitting either the image of the field of view of 170 ° or the image of the field of view of 120 ° according to the monitor resolution, the resolution of the monitor 21 is Other than that, there are VGA, QVGA, etc. For example, in the case of QVGA, an image with an angle of view of 120 ° may be generated, and in the case of QQVGA, an image of 100 ° may be generated and transmitted with a narrower angle of view. . Also, the angle of view captured by the camera 11 is not fixed to 170 ° in the horizontal direction, and a camera with any angle of view can be used.

  1 · · Entrance door handsets 2 · · · · room room master unit · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · storage unit (model information storage unit) 17 -Handset CPU (communication control unit, transmission video control unit), 21-Monitor, 26-Call button, 28-Master CPU.

Claims (3)

There is a front door handset for a visitor to call a resident, and a living room main unit for a resident to respond to a call from the front door handset, for scanning the visitor on the front door handset. An intercom apparatus comprising a camera and a monitor for displaying an image captured by the camera on the parent room.
The front door slave unit stores a model information storage unit that stores the relationship between the model of the room parent unit and the angle of view of the video to be transmitted;
A communication control unit that obtains model information of the room parent machine by communicating with the room parent machine;
A video signal generation unit that converts video captured by the camera into a video signal;
A slave device video processing unit that generates a video signal of an arbitrary angle of view below the angle of view based on the video signal;
And a transmission video control unit for controlling a video signal to be transmitted to the base unit in the room.
When transmitting the captured video of the camera to the living room base unit, the transmission video control unit reads the field angle information associated with the acquired living room base unit from the model information storage unit, and the field angle An interphone apparatus, which controls the slave unit video processing unit to generate and transmit a video image of the above.   The communication control unit is characterized in that model information is obtained from the main room at a certain timing among fixed intervals at power-on, call start, monitor start, and standby intervals. The intercom apparatus of 1 description.   When the communication control unit can not obtain model information from the base unit in the room, the transmission video control unit causes the slave unit video processing unit to generate a video of an angle of view corresponding to a low resolution monitor set in advance. The intercom apparatus according to claim 1 or 2, characterized in that it transmits.

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