JPH05308638A - Video interphone - Google Patents

Abstract

PURPOSE:To simultaneously photograph and display a child of low stature and an adult of high stature by arranging a CCD in lengthy fashion at a television camera as an image pickup device, and using a length display part as a monitor television. CONSTITUTION:The television camera 11 which photographs a visitor is arranged at slave equipment 1 installed at a hallway and a gate, etc. The CCD 12 is used in the television camera 11 as the image pickup device, and it is arranged in the lenghty fashion so as to image-pick up a wide visual field in the longitudinal direction. Master equipment 2 fetches an image signal from the slave equipment 1, and converts the image signal to an analog signal by processing via an A/D conversion means 21, image memory 22, a signal processing means 23, and a D/A conversion means 24, and displays it on the monitor television 25. The lengthy display part is used to display a video with wide visual field in the longitudinal direction image-picked up by the television camera 11 as a display part 26. Therefore, it is possible to simultaneously display the child of low stature and the adult of high stature on the display part 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television intercom capable of capturing a visitor's face or the like with a television camera at a front door, a gate or the like of a general household and monitoring it inside a house.

[0002]

2. Description of the Related Art This type of TV intercom is composed of a slave unit having a built-in TV camera installed at the entrance or gate of a general household, and a master unit installed inside the house and having a monitor TV. A visitor standing in front is imaged by a television camera, an image signal is sent to a master device, and a monitor (television) allows a householder (user) to confirm the visitor.

In such a television intercom, a CCD used as an image pickup element of a television camera of a child device is conventionally used so that a plurality of visitors standing in front of the child device on the parent device side can be displayed on a monitor TV. It was arranged horizontally, and the monitor TV had a horizontally long display. This is so that when a plurality of visitors stand in front of the child device, as many people as possible can be imaged even if they are arranged side by side.

[0004]

However, in the above TV intercom, when the upper and lower range of the image displayed on the monitor TV is narrowed and the imaging field of view is set to the position of the adult's face, As shown in FIG.
If the adult M1 and the child M2 visit at the same time, the child M2 at a relatively low position will enter the blind spot of the TV camera and will not be displayed on the display section of the monitor TV.

The present invention has been made in view of the above points, and an object of the present invention is to simultaneously image a short child and a tall adult with a slave unit and display them on the display unit of the master unit. It is to provide a TV intercom that can be used.

[0006]

According to the present invention, there is provided a slave unit which images a visitor or the like with a television camera and outputs an image signal, and a master unit which receives an image signal output from the slave unit and displays it on a monitor television. In this television intercom, the television camera has a vertically long CCD as an image pickup element, and a vertically long display portion is used as the monitor television.

[0007]

In the television intercom of the present invention, the CCD used as the image pickup device of the child device is vertically arranged, a wide field of view is imaged in the vertical direction, and a monitor TV having a vertically long display portion is provided on the parent device. A wide field of view can be displayed in the captured vertical direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. Reference numeral 1 denotes a child device installed at the entrance, gate, etc. of a general household, which images a visitor and outputs an image signal.

Reference numeral 11 denotes a television camera for picking up an image of a visitor, which uses a CCD 12 as an image pickup element.
D12 is arranged vertically so as to capture a wide visual field in the vertical direction as shown in FIG.

Reference numeral 2 denotes a master device installed in the house, which takes in an image signal output from the slave device 1 and monitors a video.

Reference numeral 21 is an A / D conversion means for converting the image signal from the slave unit 1 into digital data, and 22 is an image memory for temporarily converting the image data output from the A / D conversion means 21. To remember.

Reference numeral 23 is a signal processing means for correcting the distortion of the image and for enlarging the image, and 24 is a D / A conversion means, which is output from the signal processing means 23. The converted image data is converted into an analog signal.

Reference numeral 25 is a monitor television, which is a D / A conversion means 2
4 is used to display the analog signal output from the display unit 4 as an image, and the display unit 26 uses a vertically long shape in order to display an image of a wide field of view in the vertical direction captured by the television camera 11. .

Therefore, according to this embodiment, as shown in FIG. 3, a tall adult M1 and a short child M2 can be displayed on the display unit 26 at the same time.

[0016]

As described above, according to the television intercom of the present invention, the CCD used as the image pickup device of the child device is vertically arranged, a wide field of view is taken in the vertical direction, and the vertically long display portion is provided in the parent device. Since it is possible to display a wide field of view in the vertical direction by the monitor television having the above, it is possible to simultaneously image a short child and a tall adult with the slave device and display them on the display unit of the master device. We could provide a TV intercom.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a schematic diagram for explaining an imaging visual field according to the above.

FIG. 3 is a schematic diagram showing a display unit of the monitor television according to the above.

FIG. 4 is a schematic diagram showing a display unit of a monitor television according to a conventional example.

[Explanation of symbols]

 1 Child Device 2 Parent Device 11 TV Camera 12 CCD 21 A / D Conversion Means 22 Image Memory 23 Signal Processing Means 24 D / A Conversion Means 25 Monitor Television 26 Display Section

Claims (1)

[Claims] 1. A television intercom comprising: a slave device that images a visitor or the like with a television camera and outputs an image signal; and a master device that captures an image signal output from the slave device and displays it on a monitor television. The television intercom is characterized in that a CCD is vertically arranged as an image pickup device and a vertically long display portion is used as the monitor television.