JPH07143468A - Video telephone set - Google Patents

Abstract

PURPOSE:To realize the video telephone set in which talkers make communication while facing with each other in front by arranging a liquid crystal display device and an image pickup device at the same angle to the talkers. CONSTITUTION:When the use of the telephone set is started, a liquid crystal drive circuit 4 displays a picture received by a transmission reception circuit 5 by using dots other than a dot 7 corresponding to a hole 6 of a reflecting plate and the dot 7 corresponding to the hole of the reflecting plate is always kept in a 'through' state. A television camera 3 catches a light reflected from a talker through the hole 6 and the dot 7 corresponding to the hole 6 of the reflecting plate to form a picture and its picture signal is fed to the circuit 5. The circuit 5 sends the signal from the camera 3 to a communications line and receives the picture sent through the communications line and sends the pickup device and the liquid crystal panel 1 displaying the received picture can be place at the same angle in the same direction to the talkers thereby allowing the talkers to make communication while facing with each other in front.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video telephone apparatus for mutually transmitting images photographed by a television camera or the like via a communication line.

[0002]

2. Description of the Related Art Conventionally, in a videophone device, a display device and a photographing device are arranged at different angles with respect to a caller.

[0003]

In the above-mentioned conventional example, the caller talks while looking at the image of the other party on the display device, so that there is a problem that the photographing device cannot photograph the caller from the front. It was

The present invention has been made to solve the above problems, and an object of the present invention is to provide a videophone device capable of photographing a caller from the front.

[0005]

In order to achieve the above object, the video telephone device of the present invention is the video telephone device according to claim 1, which is configured by a combination of a liquid crystal display, a photographing device and a communication line. A reflective plate is provided in the liquid crystal display, and the photographing device is arranged on the back surface of the reflective plate. In claim 2, a plurality of holes are arranged in the reflective plate in the liquid crystal display, and The liquid crystal display device further comprises a control circuit for keeping the liquid crystal dots corresponding to the positions in a transmissive state at all times, further comprising a slit in the reflection plate in the liquid crystal display, and a drive device for moving the slit. , Which has a control circuit for bringing a liquid crystal display portion corresponding to the slit into a transmissive state.

[0006]

According to the present invention, since the display device and the photographing device are present at the same angle for the caller, it is possible for the caller to talk while looking at the image of the other party from the front. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic structure of a main part of a first embodiment of the present invention. In FIG. 1, 1 is a liquid crystal plate which changes to transparent or non-transparent according to an image received from the other side. Is a reflection plate for reflecting the light transmitted through the liquid crystal plate 1, and 3 is a reflection plate 2.
The television camera 4 that shoots the caller through the randomly arranged holes 6 and the dots 7 of the liquid crystal that are always in a transparent state corresponding to the holes 6 drives the liquid crystal plate 1 according to the received image. At the same time, the dots corresponding to the holes 6 are always kept in a transmissive state. A liquid crystal drive circuit 5 sends and receives an image signal from the television camera 3 to the communication line and receives and receives an image from the other side. Holes randomly arranged at 7 and 7 correspond to the holes 6 and indicate liquid crystal dots which are always in a transmissive state.

Next, in the above structure, when the liquid crystal drive circuit 4 starts to use, the liquid crystal drive circuit 4 displays the image received by the transmission / reception circuit 5 using dots other than the dots 7 corresponding to the holes 6 of the reflection plate, and The dots 7 corresponding to the holes are always kept transparent. The television camera 3 captures the light reflected by the caller through the hole 6 and the dot 7 corresponding to the hole 6 of the reflector to form an image, and sends the image signal to the transmitting / receiving circuit 5. The transmission / reception circuit 5 sends the signal from the television camera 3 to the communication line, and at the same time, receives the image sent from the communication line and sends the image signal to be displayed on the liquid crystal drive circuit 4. As a result, the television camera 3 which is a photographing device and the liquid crystal plate 1 which displays the received image can exist at the same angle in the same direction with respect to the callers, and the callers can talk while facing each other in front. It was

FIG. 2 is a diagram showing the outline of the main configuration of the second embodiment of the present invention. In FIG. 2, reference numeral 11 denotes received image data sent from a transmission / reception circuit (not shown) and slit detector 20. The position data of the slit is driven by the drive output of each liquid crystal pixel that is combined by the liquid crystal drive circuit to display the received image, and the pixel corresponding to the position of the slit becomes transparent, and the CCD camera captures the caller. A liquid crystal plate composed of 200 × 250 pixels vertically and horizontally, which has a high reflectance on the outside and a CCD on the inside so as to reflect the light transmitted through the liquid crystal plate 11. It has a low reflectance so as to eliminate the input of ambient light to the camera 13, and further, in some parts, the vertical direction corresponds to 5 pixels of the liquid crystal and the horizontal width corresponds to the liquid crystal 2.
Reflection band having slits 18 for total transmission of 50 pixels, 1
Reference numeral 3 is a slit 18 of the reflection band 12 and a liquid crystal plate 11 which is in a transmissive state according to the movement of the slit 18 to photograph the caller
The CD camera 14 is driven by a motor (not shown) to rotate the reflection band 12 at a predetermined speed.
Reference numerals 16 and 17 denote rollers for supporting the reflection band 12, 18 denotes a slit of total transmission provided in a part of the reflection band 12, and 19 denotes reception image data from a transmission / reception circuit (not shown) and the output of the slit detector. A liquid crystal drive circuit that drives each pixel of the liquid crystal plate 11, and a slit detector 20 that detects the position of the slit 18.

Next, in the above structure, when the caller starts using the drive roller 14, the drive roller 14 rotates and the reflection band 12 is moved so that the slit 18 moves from the uppermost position to the lowermost position of the liquid crystal plate in 1/50 sec. To drive. The liquid crystal drive circuit 19 outputs the received image to the pixels of the received image data other than the pixels of the five lines corresponding to the slits 18, and the pixels of the five lines corresponding to the slits are all in the transmissive state. At this time, since the slit 18 moves in the direction of the arrow, the corresponding 5 lines also change at the same speed. Therefore, each line is 1/50 sec and 1/2000 sec.
In this case, all transmission is performed, and the received image is displayed for 39/2000 seconds. Further, at this time, the CCD camera 13 accumulates the reflected light of the caller, which passes through the slit 18 and the corresponding pixels of the five lines which are totally transmitted, every 1/50 sec, and photographs it. The image signal is output to a transmission / reception circuit (not shown). As a result, the callers can talk while facing each other in the same manner as in the first embodiment.

[0011]

As described above, according to the present invention, by disposing the liquid crystal display and the photographing device at the same angle with respect to the callers, a videophone in which the callers can talk while facing each other in the front is realized. It has become possible.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a main part of a first embodiment of the present invention.

FIG. 2 is a diagram showing an outline of a main configuration of a second embodiment of the present invention.

[Explanation of symbols]

 1, 11 Liquid crystal plate 2 Reflector plate 3 Television camera 4 Liquid crystal drive circuit 5 Transmitter / receiver circuit 6 Hole 7 Dot 8 Communication line 12 Reflection band 13 CCD camera 14 Drive roller 15, 16, 17 roller 18 Slit 19 Liquid crystal drive circuit 20 Slit detector

Claims (3)

[Claims] 1. A video telephone apparatus comprising a combination of a liquid crystal display, a photographing device and a communication line, wherein a reflecting plate is provided in the liquid crystal display, and the photographing device is arranged on the back surface of the reflecting plate. Videophone device. 2. The video telephone apparatus according to claim 1, wherein a plurality of holes are arranged in a reflector in the liquid crystal display, and liquid crystal dots corresponding to the positions of the holes are always kept in a transmitting state. A videophone device comprising: 3. The videophone device according to claim 1, wherein a reflector is provided in the liquid crystal display, and a slit is provided in the liquid crystal display, and a drive device for moving the slit is provided, and a liquid crystal display portion corresponding to the slit is set in a transmissive state. A videophone device having a control circuit for controlling.