JP2979827B2 - TV intercom - Google Patents

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 and the like with a television camera at an entrance, a gate, or the like of a general household or the like, and monitoring the image in a house or the like.

[0002]

2. Description of the Related Art A television intercom of this type is composed of a child unit having a built-in television camera installed at the entrance, gate, or the like of a general home, and a parent unit installed inside a house and having a monitor built therein. The visitor who was standing was imaged with a TV camera,
A video signal is sent to the parent device, and a family member checks the visitor using a monitor.

FIG. 4 is a block diagram showing a schematic configuration of a conventional TV interphone. A slave unit 1 includes an image pickup means 11 composed of a TV camera or the like for picking up a visitor, and a microphone for collecting the voice of the visitor. , A signal processing means 13 for digitizing a video signal and an audio signal obtained from the imaging means 11 and the audio collecting means 12 and outputting them as image data and audio data, and the image data and audio data (reception data ) To the parent device 2
And

The master unit 2 includes a receiving unit 21 for receiving image data and audio data transmitted from the slave unit 1, a signal processing unit 22 for converting the received data into an analog signal of a video signal and an audio signal, and Monitor means 23 for displaying a video signal, and sound generating means 24 such as a microphone for outputting an audio signal as sound.

[0005]

However, in such a television interphone, when the monitor image displayed on the monitor means 23 has a large distortion at the peripheral portion and the monitor image is partially enlarged by the zoom function, There is a problem in that the resolution is reduced, making it difficult to see, making it difficult for a visitor to be identified.

[0006] The present invention has been made in view of the above points, and it is an object of the present invention to provide a television interphone that eliminates distortion of a monitor image and does not reduce resolution even when the image is enlarged. It is in.

[0007]

SUMMARY OF THE INVENTION The present invention provides imaging means for imaging a visitor or the like and outputting a video signal, signal processing means for converting the video signal into digital image data, and converting the digitized image data into digital image data. A slave having transmission means for transmitting, a transmission means for receiving image data transmitted from the slave, a signal processing means for converting image data received by the reception means into an analog signal, and a video signal converted to an analog signal in television interphone comprising a master unit comprising a monitor means for displaying the division, as the imaging means of the child unit, with use of the plurality imaging means for imaging a field of view divided into a plurality, that is captured by the plurality of image pickup means Sighted
Image data containing overlapping parts in the boundary area of each field
Storage means for storing, for each visual field stored in the storage means
The present invention is characterized in that a comparing means for cutting off unnecessary data, which is an overlapping part, from image data and a synthesizing means for synthesizing each of the cut image data to create one image data are added.

[0008]

According to the television intercom of the present invention, the field of view is divided into a plurality of images by the plurality of image pickup means of the slave unit.
Unnecessary portions of the boundary area of each image data divided by the comparing means are truncated, each image data in which the unnecessary portions are truncated is synthesized by the synthesizing means, and the synthesized image data is transmitted from the child device to the parent device. It is.

[0009]

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. Since the basic operation of a television intercom is the same as that of the conventional example shown in FIG. 4, the same parts are denoted by the same reference numerals. The description will be omitted, and only the characteristic portions will be described.

The slave 1 of the present embodiment comprises a plurality of image pickup means 15,
It comprises a sound collecting means 12, a signal processing means 13, a storage means 16, a comparing means 17, a synthesizing means 18, and a transmitting means 14.

The plurality of image pickup means 15 is for dividing the field of view into a plurality of parts and picking up an image.
As shown in (4), four combinations of lenses and CCDs (imaging cameras) are used.

That is, when the field of view is divided into four parts as shown in FIG. 3, the field of view A has a lens 151A and a CCD 152A.
And a lens 151B and a CCD 152 in the field of view B.
B corresponds to the lens 151C, the CCD 15
2C corresponds, lens 151D, CCD1
Each lens and CCD are installed so that each field of view is imaged such that 52D corresponds.

Each visual field A output from the plurality of image pickup means 15
The video signals (analog video signals) corresponding to .about.D are A / D-converted by the A / D converter 131 of the signal processing means 13 and output as image data.

The image data is stored in the memory 1 serving as the storage unit 16.
The information is stored in the field of view 61 for each of the visual fields A to D.

Here, the image data DA, DB, DC, DD for each of the visual fields A to D stored in the memory 161 include an overlapping portion in the boundary area of each visual field as shown in FIG.

In order to cut off the overlapped portion (unnecessary data), the comparison processing section 171 of the comparison means 17 performs a process of cutting off portions outside the cutoff boundary line L of each of the visual fields A to D. That is, in the comparison processing unit 171, the boundary line L
Are designated in advance, and the image data read from the memory 161 is discarded based on the coordinates of the boundary line L.

The synthesizing unit 181 of the synthesizing unit 18 synthesizes image data for each of the fields of view A to D from which unnecessary data in the boundary area has been cut out as one image, and the synthesized image data is transmitted by the transmitting unit 14. It is transmitted to the parent device 2.

Therefore, according to the present embodiment, a plurality of imaging cameras divide the field of view to take an image and combine the divided image data to create an image for the entire field of view. Compared to the case where the camera captures the entire field of view, the distortion of the image projected on the monitor screen can be reduced and the resolution when using the enlargement function can be prevented, so that it can be used in bad weather or at night. There is an effect that it becomes possible. Further, the field of view is further expanded by increasing the number of imaging cameras (for example, 36
0 degrees).

[0020]

As is evident from the foregoing description, according to the television interphone of the present invention, imaging is divided by Ri viewing the field into a plurality of multiple image pickup means of the child unit, a boundary of each divided field of view by the storage means
Storing image data including an overlapping portion in the boundary area,
Unnecessary portions of the boundary area of each image data divided by the comparing means are truncated, and the image data in which the unnecessary portions are truncated are synthesized by the synthesizing means, and the synthesized image data is transmitted from the child device to the parent device. As a result, a TV intercom that can eliminate the distortion of the monitor image and does not reduce the resolution even when the image is enlarged can be provided.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a slave unit according to the above.

FIG. 3 is a schematic diagram for explaining the operation of the above.

FIG. 4 is a block diagram showing a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 slave device 2 master device 11 imaging means 12 sound collecting means 13 signal processing means 14 transmitting means 15 plural imaging means 16 storage means 17 comparing means 18 synthesizing means 21 receiving means 22 signal processing means 23 monitoring means 24 sounding means

Claims (1)

(57) [Claims] 1. A slave unit comprising: an imaging unit for imaging a visitor or the like and outputting a video signal; a signal processing unit for converting the video signal into digital image data; and a transmission unit for transmitting the digitized image data. Transmitting means for receiving the image data transmitted from the slave, signal processing means for converting the image data received by the receiving means into an analog signal, and monitor means for displaying a video signal converted to the analog signal in television interphone comprising a master set comprising Te, as an imaging device of the child device, with using a plurality imaging means for imaging a field of view divided into a plurality, said plurality of image pickup means
In the boundary area for each of the divided fields of view imaged at
Storage means for storing image data including a portion;
From the image data for each field of view stored in
A television intercom, comprising: a comparing unit for cutting off unnecessary data to be used; and a synthesizing unit for synthesizing each cut-out image data to create one image data.