JP2007150452A - Video intercom device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video intercom apparatus wherein the silence of an entrance slave unit is enhanced, the design thereof is facilitated, and downsizing and low profile of a living room master unit can be attained. <P>SOLUTION: Location information corresponding to a prescribed part desirably zoomup-displayed can be stored in a storage section 103 of the entrance slave unit by using a zoom signal from a control section 205 of the living room master unit in the case of displaying a video image of a wide range imaged by a camera 102 of the entrance slave unit 1 through the use of a wider angle lens 102a on a screen of a monitor 201 of the living room master unit 2. The location information is preset in the storage section in a calling operation from the entrance slave unit to the living room master unit. Further, a video processing section 104 of the entrance slave unit applies image processing to the video image in the calling operation, transmits the processed video image to the living room master unit, and applies zoom processing to the prescribed part of the video image on the basis of the location information stored in the storage section in the case of zoomup and can transmit the resulting image to the living room master unit. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a television doorphone device having an image capturing / display function, and more particularly to a television doorphone device having a zoom function for images captured at a wide angle.

  2. Description of the Related Art Conventionally, as this type of TV door phone apparatus, a TV interphone apparatus provided with a scroll button for scrolling the image frame of a TV monitor of a TV interphone master unit up, down, left and right has been disclosed (for example, see Patent Document 1). .

  According to this TV intercom apparatus, the TV interphone slave unit is provided with a wide-angle lens, and when the scroll button connected to the scroll means provided in the TV interphone master unit is operated, the zoom unit displays the image signal frame. You can zoom. The zoomed image frame can be monitored on a television monitor while scrolling with scroll means.

Japanese Patent Laid-Open No. 7-46583 (paragraph numbers “0011” to “0021”, FIGS. 1 to 6)

  According to the television intercom apparatus of Patent Document 1 described in the background art, as its effect, the number of parts can be reduced and the operability of the scroll buttons and the like can be improved. However, in order to perform pan / tilt operation and optical zoom of the TV camera of the TV intercom handset, drive control and mechanism control by a motor are necessary, and not only much time is spent on the design, but also by motor drive. There is a risk of noise and / or noise generation or abnormal operation due to a failure of the motor. Further, since the components / circuits for implementing the zoom means and scroll means are provided in the TV interphone master unit, it is difficult to reduce the size and thickness of the master unit.

  The present invention has been made to solve this problem, and when taking a picture with the camera of the front door unit, a wide-angle lens is used to display a wide range of images on the monitor screen of the parent unit. The display range can be easily changed by pan / tilt operation, and image processing functions such as zoom processing of images captured by the camera are provided in the slave unit, thereby facilitating the design of the entrance slave unit. An object of the present invention is to provide a TV door phone device that can improve quietness and can reduce the size and thickness of a base unit.

  In order to achieve the above-described object, a television door phone device according to a first aspect of the present invention includes an entrance cordless handset having a camera and a monitor for displaying an image captured by the camera of the entrance cordless handset. , And a living room base unit for establishing a call in response to a call from the entrance unit. The entrance unit includes a storage unit for storing location information corresponding to a predetermined location desired to be displayed on the monitor screen by zooming out of the images captured by the camera, and a calling unit. Video for image processing during operation and transmission to the parent unit, and for zooming up, a video for zooming and transmitting a predetermined portion of the image to the parent unit based on the location information stored in the storage unit And a processing unit. The living room master unit includes a control unit that generates a zoom signal for specifying a predetermined portion to be displayed on the monitor screen by zooming out of the video transmitted from the entrance slave unit.

  Also, the television door phone device according to the second aspect of the present invention is the one in the first aspect of the present invention, in which the location information corresponding to a predetermined portion of the image to be displayed by zooming up at the time of the calling operation is preset in the storage unit. is there.

  Further, in the television door phone device according to the third aspect of the present invention, in the first aspect of the present invention, the predetermined location is obtained by dividing the display screen of the monitor into a plurality of small screens by dividing the display screen vertically and horizontally. It is selected by designating a small screen on which the video portion of the video is displayed, and the location information is a zoom signal representing the designated small screen.

  According to the television door phone device of the present invention, when taking a picture with the camera of the entrance cordless handset, a wide-angle lens can be used to display a wide range of picture on the monitor screen of the living room base unit. Instead, a part of the video imaged by the camera can be displayed on the screen of the monitor. Further, the display range of the video displayed on the monitor screen can be easily changed by pan / tilt operation.

  As a result, the motor for performing the pan / tilt operation and the drive control and mechanism control of the motor are not required for the front door unit, and noise and / or generation of noise and abnormal operation are suppressed, and quietness is improved. The handset can be easily designed. In addition, since the slave unit is provided with an image processing function such as zoom processing of an image captured by the camera of the entrance slave unit, the room master unit can be reduced in size and thickness.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments to which a television door phone device of the invention is applied will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a specific configuration of a television door phone device according to an embodiment of the present invention.

  The TV door phone apparatus shown in FIG. 1 is composed of an entrance cordless handset 1 installed at the entrance of the dwelling unit and a living room master set 2 installed in the dwelling unit. Between the entrance cordless handset 1 and the sitting room master set 2, They are connected via a transmission line L.

  The entrance slave unit 1 includes a call unit 100, a call detection unit 101, a camera 102, a storage unit 103, a video processing unit (hereinafter referred to as a slave unit video processing unit) 104, and a call unit (hereinafter referred to as a slave unit call unit). ) 105, a voice processing unit (hereinafter referred to as a “slave unit voice processing unit”) 106, a power source unit (hereinafter referred to as a “slave unit power supply unit”) 107, and a transmission interface (hereinafter referred to as a “slave unit I / F”) 108. ing.

  In this entrance cordless handset 1, the calling unit 100 performs an operation (hereinafter referred to as a calling operation) for a person at the entrance of the dwelling unit, for example, a visitor to call a resident in the room. . Further, as the calling unit 100, for example, a calling button is suitable.

  The call detection unit 101 monitors / detects whether there is a call operation performed by the call unit 100, and generates a call signal when the call operation is detected.

  The camera 102 is fixed to the slave unit and captures, for example, a video of a visitor who has performed a call operation at the call unit 100 or a video around the entrance of a dwelling unit (including a monitoring video) as a subject. Is for. The camera 102 includes a lens unit 102a and a light receiving unit 102b.

  The lens unit 102a of the camera 102 is preferably a super-wide-angle lens or a fish-eye lens, for example, in order to obtain a wide-angle full view as a full view of the subject. Note that the super-wide-angle lens is generally defined as a wide-angle lens having a diagonal field angle of about 150 degrees or more. On the other hand, a fisheye lens is generally defined as a wide-angle lens having a diagonal field angle of about 180 degrees or more.

  The light receiving unit 102b of the camera 102 receives light from a subject that has passed through the lens unit 102a, performs photoelectric conversion on the received light image, and generates a video signal of an electrical signal. The light receiving unit 102b is a photoelectric conversion element in which a plurality of light receiving elements that convert electric signals corresponding to the intensity of received light are arranged in a matrix. For example, a CCD (Charge Coupled Devices), a CMOS (Complementary Metal Oxide) Various solid-state imaging devices such as Semiconductor) are suitable.

  The storage unit 103 stores the location information corresponding to a predetermined location to be displayed by zooming up on the screen of the monitor 201 (to be described later) of the living room master unit 2 among the images captured by the camera 102. It is for memorize | storing with the zoom signal transmitted from 205. FIG. As the storage unit 103, for example, various memories such as a RAM (Random Access Memory) and an EEPROM (Electrically Erasable Programmable Read Only Memory) are suitable.

  The slave unit video processing unit 104 performs signal processing of the video signal transmitted from the light receiving unit 102b of the camera 102, performs image processing of the video, for example, FM modulation, and transmits it to the room master unit 2 during a call operation. At the time of zooming up, a predetermined portion of the video is zoomed based on the location information stored in the storage unit 103 and transmitted to the room master unit 2. The child image processing unit 104 has functions of performing not only the above-described image processing and zoom processing, but also clipping processing, distortion correction, and the like.

  The slave phone call unit 105 is for inputting / outputting voices (transmitted voice, received voice) when a visitor establishes a call with a resident. As this subunit | mobile_unit call part 105, a microphone and a speaker are suitable, for example. In applying the speaker, the speaker has not only the above-described receiving function but also a confirmation sound or voice message indicating that the calling operation performed in the calling unit 100 has been normally notified by the living room base unit 2. Etc. can also be emitted.

  The slave unit voice processing unit 106 performs 4-line / 2-line conversion, 2-line / 4 on the audio signal of the electrical signal that is input / output using the slave unit call unit 105 (transmitted voice, received voice). It is for performing line conversion and amplification.

  The slave unit power supply unit 107 receives DC power supplied from a power source unit 206 (to be described later) of the living room master unit 2 and supplies the DC power source to each component / circuit of the slave unit as an operating power source of a predetermined voltage level. Is.

  The slave unit I / F 108 is a signal / data transmission line from the call detection unit 101 to the transmission line L, a signal / data transmission line from the transmission line L to the storage unit 103, and from the transmission line L to the slave unit video processing unit 104. Signal / data transmission line, signal / data transmission line from handset image processing unit 104 to transmission line L, signal / data transmission line (call line) between handset unit audio processing unit 106 and transmission line L, transmission line L To form a power supply line from the power supply unit 107 to the slave unit power supply unit 107.

  The living room master unit 2 includes a video processing unit (hereinafter referred to as a master unit video processing unit) 200, a monitor 201, a call unit (hereinafter referred to as a master unit call unit) 202, and an audio processing unit (hereinafter referred to as a master unit). A voice processing unit 203, an operation unit 204, a control unit 205, a power supply unit (hereinafter referred to as a parent device power supply unit) 206, and a transmission interface (hereinafter referred to as a parent device I / F) 207 are provided.

  In this living room master unit 2, the master unit video processing unit 200 is for demodulating, for example, an FM-modulated video signal transmitted from the entrance slave unit 1.

  The monitor 201 performs signal processing on the video signal transmitted from the base unit video processing unit 200 and displays the video captured by the camera 102 of the front door unit 1 on the screen. This is for displaying a predetermined portion of the zoom-in display. As the monitor 201, for example, various displays such as an LCD (Liquid Crystal Display) and an organic EL (Electro Luminescence) display are suitable. On the screen of the monitor 201, not only the above-described video display function but also a text message or picture data indicating that there is a call from a visitor can be displayed.

  In addition, as shown in the explanatory diagram of FIG. 2, the monitor 201 has an area designated as “0” as a whole of the display screen as one aspect of the screen configuration, and the display screen is vertically and horizontally set to a predetermined number. Location information of “1” to “9” for designating a plurality of small screens, in this case, a small screen divided into nine vertical and three horizontal screens is assigned. This location information can be stored in the control unit 205. FIG. 2 is an explanatory diagram illustrating a screen configuration / display example of the monitor 201 of the living room master unit 2.

  The base phone call unit 202 is used for inputting and outputting voices (transmitted voice and received voice) when a resident establishes a call with a visitor. For example, a microphone and a speaker are suitable as the base unit call unit 202. In addition, when applying a speaker, the speaker can emit not only the above-described receiving function but also a ringing sound or a voice message indicating that there is a call from a visitor.

  The base unit voice processing unit 203 performs 4-line / 2-line conversion, 2-line / 4 on the audio signal of the electrical signal that is input / output using the base unit call unit 202 (transmitted voice, received voice). It is for performing line conversion and amplification.

  The operation unit 204 includes, as its configuration, a monitor button 204a, a call button 204b, a pan / tilt button 204c, and a touch panel 204d.

  The monitor button 204 a of the operation unit 204 is operated by a resident to cause the camera 102 to capture a monitoring image of the surrounding environment where the front door 1 is installed and display it on the screen of the monitor 201.

  The call button 204b of the operation unit 204 is for a resident who has confirmed a call from a visitor to perform a response operation to establish a call with the visitor.

  The pan / tilt button 204c of the operation unit 204 is operated by a resident in order to change the display range of the image displayed on the screen of the monitor 201 by pan / tilt. For example, a cross key is suitable as the pan / tilt button 204c.

  The touch panel 204d of the operation unit 204 is provided on the front (display screen) side of the monitor 201, and among the images captured by the camera 102 of the front door device 1, a predetermined portion that is to be displayed on the screen with zoom-in is displayed. This is for residents to select by touch operation. As the touch panel 204d, for example, various sensor methods such as a resistive film method, an ultrasonic method, and a capacitance method are suitable.

  Note that the operations of the monitor button 204a, the call button 204b, and the pan / tilt button 204c described above can be performed by touch operations using the touch panel 204d by a resident by displaying the contents of the operations on the screen of the monitor 201, respectively. .

  The control unit 205 is for controlling each part / circuit of the base unit, and in particular, by zooming in on the screen of the monitor 201 among the images captured by the camera 102 of the front door unit 1. A function of generating a zoom signal for specifying a predetermined location to be displayed is provided.

  The base unit power supply unit 206 supplies a DC power source rectified / smoothed with respect to a commercial power source (AC 100 V) to each component / circuit of the base unit as an operating power source of a predetermined voltage level. The power is supplied to the handset power supply unit 107 of the machine 1.

  Base unit I / F 207 includes a signal / data transmission line from transmission path L to base unit video processing unit 200, a signal / data transmission line (call line) between base unit audio processing unit 203 and transmission path L, and a control unit. A signal / data transmission line between 205 and the transmission line L and a power supply line from the parent power supply unit 206 to the transmission line L are formed.

  In the TV door phone apparatus according to the embodiment of the present invention configured as described above, a specific operation will be described below.

  When the TV door phone apparatus shown in FIG. 1 is in a standby state, the base unit power supply unit 206 of the living room base unit 2 uses a DC power source rectified / smoothed with respect to a commercial power source (AC 100 V) at a predetermined voltage level for standby. Can be supplied to each component / circuit of the parent device as an operation power source. Further, the DC power rectified / smoothed by the master unit power supply unit 206 is supplied to the slave unit power source unit 107 via the master unit I / F 207, the transmission line L, and the slave unit I / F 108 of the entrance slave unit 1. The

  The cordless handset power supply unit 107 of the entrance cordless handset 1 can supply the DC power received from the living room base phone 2 to each component / circuit of the cordless handset as an operating power supply having a predetermined voltage level for standby.

  Next, in the standby state as described above, when a visitor at the entrance of the dwelling unit calls a resident in the room in the dwelling unit, if a call operation is performed at the calling unit 100 of the entrance cordless handset 1, this call is made. The call detection unit 101 that has detected the operation generates a call signal. The call signal generated by the call detection unit 101 is transmitted to the control unit 205 via the slave unit I / F 108, the transmission path L, and the master unit I / F 207 of the living room master unit 2.

  The control unit 205 of the living room base unit 2 detects that there is a call by a visitor based on the call signal transmitted from the front door unit 1. The control unit 205 controls each of the parent device video processing unit 200 and the monitor 201 to display the monitor, and further emits a ringing tone, a voice message, and the like from the parent device call unit 202 (speaker). be able to. Further, the control unit 205 controls the base unit power source unit 206 to supply a DC power source for calling at a voltage level higher than that for the above-described standby as an operating power source to each component / circuit of the base unit. In addition, the same DC power can be supplied from the slave unit power supply unit 107 of the entrance slave unit 1 to each component / circuit of the slave unit as operation power. Note that the control unit 205 can not only display a character message or picture data indicating that there is a call from the visitor on the screen of the monitor 201, but also the call operation by the visitor is a normal operation and the room It is also possible to generate a confirmation sound, a voice message, or the like indicating that the calling notification has been made in the parent device 2 and emit the sound from the child device call unit 105 (the speaker thereof) of the entrance child device 1.

  Next, the camera 102 activated by the supply of DC power from the slave power supply unit 107 of the entrance slave unit 1 is an image of a visitor who has performed a call operation at the call unit 100 or an image of the vicinity of the entrance to the dwelling unit. Starts imaging. Since the lens unit 102a of the camera 102 uses, for example, an ultra-wide angle lens or a fisheye lens, the light from the subject is emitted at a wide angle such that the diagonal field angle is about 150 degrees or more or about 180 degrees or more. The light that can be transmitted is received by the light receiving unit 102b.

  In the entrance device 1, the light receiving unit 102 b of the camera 102 converts the received light into an electric video signal having a voltage level corresponding to the intensity of the light. This video signal is subjected to signal processing via the slave unit video processing unit 104, for example, FM modulation, and then via the slave unit I / F 108, the transmission path L, and the master unit I / F 207 of the living room master unit 2. It is transmitted to the parent device video processing unit 200.

  The master unit video processing unit 200 of the living room master unit 2 demodulates the video signal transmitted from the entrance slave unit 1 and outputs it to the monitor 201, thereby capturing images captured by the camera 102 of the entrance slave unit 1, That is, it is possible to display on the screen the monitor 201 a video of a visitor who has performed a call operation at the calling unit 100 and a video in the vicinity of the entrance to the dwelling unit.

  Next, a call from a visitor is made based on the video displayed on the screen of the monitor 201, such as a ringing tone and a voice message emitted from the base unit call unit 202 (speaker) of the living room base unit 2. When a resident who has confirmed that there is a visitor's identity operates the call button 204b of the operation unit 204, the control unit 205 that has detected this response operation causes the base unit voice processing unit 203 (and the slave unit voice processing) Unit 106) to control base unit call unit 202 (microphone and speaker) used by the resident, base unit voice processing unit 203, base unit I / F 207, transmission path L, and slave unit of entrance unit 1 A signal / data transmission line, that is, a call line, is formed with the handset unit 105 (microphone and speaker) used by a visitor via the I / F 108 and handset voice processing unit 106. By transmitting and receiving audio signals via this call line, the resident and the visitor can establish a call, and in particular, the resident can make a call while checking the visitor's video. .

  Next, although it has been confirmed that there is a call from the visitor based on the ringing tone or voice message emitted from the base unit call unit 202 (speaker) of the living room base unit 2, When it is difficult for a resident to identify a visitor using a video displayed on the screen of the monitor 201 due to an inappropriate standing position or the like, a first panning / tilting process is used for the identification. The confirmation means and / or the second confirmation means by zoom processing are preferable.

  First, when the resident operates the pan / tilt button 204c of the operation unit 204 of the living room master unit 2 when performing the first confirmation means, the control unit 205 that detects this operation is displayed on the screen of the monitor 201. A pan / tilt signal for changing the video display range by pan / tilt is generated. The pan / tilt signal is transmitted from the control unit 205 to the child image processing unit 104 via the parent device I / F 207, the transmission path L, and the child device I / F 108 of the front door child device 1.

  Based on the pan / tilt signal transmitted from the living room master unit 2, the slave unit image processing unit 104 of the front door unit 1 receives the video signal transmitted from the light receiving unit 102b of the camera 102 within the imaging range of the camera. Pan / tilt control can be performed. By performing this control, on the screen of the monitor 201 of the living room master unit 2, a desired image by the resident, for example, an image of the vicinity of the dwelling entrance including the identifiable visitor image is displayed. Can be displayed.

  On the other hand, when performing the second confirmation unit, the monitor 201 of the living room base unit 2 having the nine small screens shown in FIG. 2 identifies the nine small screens displayed on the monitor 201. When the resident touches the touch panel 204d of the operation unit 204 so that the small screen on which the video of the visitor to be displayed is displayed, for example, the small screen of “4” is designated, the control unit 205 that has detected this operation. Generates a zoom signal to which location information of the designated small screen of “4” is added. This zoom signal is transmitted from the control unit 205 to the storage unit 103 via the parent device I / F 207, the transmission path L, and the child device I / F 108 of the front door device 1.

  The storage unit 103 of the entrance child device 1 stores the location information added to the zoom signal transmitted from the living room master device 2, that is, the location information of the small screen “4”, and the stored location information. Is output to the handset image processing unit 104.

  Note that the storage unit 103 of the front door unit 1 uses the location information added to the zoom signal transmitted from the room master unit 2, that is, the location information on the small screen of “4” as the operation of this call / call. Thereafter, it can be preset as location information corresponding to a predetermined location to be displayed on the monitor 201 in a zoom-in manner during a call operation in which a visitor performs a call operation at the call unit 100.

  The child image processing unit 104 of the entrance child device 1 is a small image corresponding to the location information transmitted from the storage unit 103 among the nine small screens constituting the video signal transmitted from the light receiving unit 102b of the camera 102. The screen “4” is cut out, and the cut out small screen “4” is zoomed up, and then a small screen video signal subjected to FM modulation is generated. This small-screen video signal is transmitted to the base unit video processing unit 200 of the room base unit 2 via the same signal / data transmission line as the above-described video signal.

  The base unit video processing unit 200 of the living room base unit 2 demodulates the small-screen video signal transmitted from the entrance unit 1 and outputs it to the monitor 201, so that the image is captured by the camera 102 of the entrance unit 1. Among the images, an image obtained by zooming up the small screen “4” as shown in FIG. 2, for example, an image that allows the resident to identify the visitor can be displayed on the monitor 201 on the screen.

  Further, when displaying the video of the small screen “4” on the screen of the monitor 201 of the living room base unit 2 by zooming up, the video is close to the small screen “4” as well as the small screen “4”. Part of the small screen, here, part of each of the small screens “1”, “2”, “5”, “7”, and “8” is also included.

  When performing the second confirmation means, as the timing, an image pan-tilt-controlled within the imaging range of the camera 102 fixed to the front door 1 is displayed on the screen of the monitor 201 of the living room 2. After the first confirmation means is performed, it is preferable that a zoomed-up image that can identify a visitor can be secured.

  As will be apparent from the above description, according to the embodiment of the present invention, when the camera 102 of the entrance cordless handset 1 captures an image, a wide-angle lens 102a is used to display a wide range of images. In addition to being able to be displayed on the screen of the second monitor 201, a part of the video imaged by the camera 102 can be displayed on the screen of the monitor 201. Further, the display range of the video displayed on the screen of the monitor 201 can be easily changed by a pan / tilt operation.

  As a result, the motor for performing the pan / tilt operation and the drive control and mechanism control of the motor are not necessary for the front door 1, and noise and / or generation of noise and abnormal operation are suppressed, and quietness is improved. The slave unit can be easily designed. In addition, since the slave unit is provided with an image processing function such as zoom processing of the video imaged by the camera 102 of the entrance slave unit 1, the room master unit 2 can be reduced in size and thickness.

  In addition, according to the Example of this invention, although the single entrance cordless handset 1 was applied as an entrance cordless handset installed in a dwelling unit entrance, it is not limited to this number. For example, the same effect can be obtained even when a plurality of entrance cordless hands 1, 1,.

  Moreover, according to the Example of this invention, although the single room main | base station 2 was applied as a room main | base station installed in a dwelling unit, it is not limited to this number. For example, a plurality of room master units 2, 2,... Are installed at the entrance of the dwelling unit, and the plurality of room master units 2, 2,. The same effect can be obtained even when connected to the front door units 1, 1,.

  Further, according to the embodiment of the present invention, a ringing sound or a voice message to be emitted from the main unit call unit 202 (speaker) of the living room main unit 2 and a sub unit call unit (speaker) of the front unit 1 Although the control unit 205 is applied as a component / circuit that generates a confirmation sound, a voice message, or the like to be emitted, the present invention is not limited to this mode. For example, a voice generation circuit controlled by the control unit 205 can be provided separately in the room master unit 2, and the voice generation circuit can generate the aforementioned ringing tone, confirmation sound, voice message, and the like.

  Furthermore, the television doorphone device of the present invention has been described with a specific embodiment, but the present invention is not limited to this embodiment, and any configuration of the known television doorphone so far as long as the effect of the present invention is achieved. It goes without saying that even devices can be employed.

The block diagram which shows the concrete structure of the television door phone apparatus by the Example of this invention. Explanatory drawing which shows the screen structure / display example of the monitor of a living room main | base station in the television door phone apparatus by the Example of this invention.

Explanation of symbols

1 …… Entrance unit 102 …… Camera 103 …… Storage unit 104 …… Slave unit image processing unit (image processing unit)
2 …… Home unit 201 …… Monitor 205 …… Control unit

Claims (3)

There is an entrance cordless handset (1) having a camera (102) and a monitor (201) for displaying an image captured by the camera of the entrance cordless handset, and makes a call in response to a call from the entrance cordless handset. It is composed of the room master unit (2) for establishment,
The entrance cordless handset stores a location information corresponding to a predetermined location that is desired to be zoomed up on the monitor screen among videos captured by the camera, using a zoom signal from the room base unit. When the calling operation is performed, the image processing of the video is performed and transmitted to the living room base unit, and the predetermined location of the video is zoomed based on the location information stored in the storage unit when the zoom is up. A video processing unit (104) for processing and transmitting to the base unit,
The living room base unit includes a control unit (205) that generates the zoom signal for specifying the predetermined location to be displayed on the monitor screen by zooming out of the video transmitted from the entrance unit. A TV door phone device characterized by that.   2. The television door phone apparatus according to claim 1, wherein location information corresponding to a predetermined location of the video that is desired to be displayed by zooming up is preset in the storage unit during the calling operation. The predetermined location is selected by dividing the display screen of the monitor into a plurality of small screens by dividing the display screen vertically and horizontally into a plurality of small screens, and specifying the small screen on which the video portion of the video is displayed. The TV door phone apparatus according to claim 1, wherein is a zoom signal representing a designated small screen.

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