JPS63142779A - Television telephone device - Google Patents

Abstract

PURPOSE:To automatically change the direction of a camera aiming at the motion of a transmitting or a receiving user, and to take the picture of the said user from a suitable angle always by detecting the position of the said use, and controlling the direction of the camera according to the detected signal of the position. CONSTITUTION:A detecting device 2A is constituted with a transmitter 5 consisting of an LED 53 to emit an infrared ray, and a receiver 6 consisting of two photodiodes 62 to receive the infrared ray, and a control device 2B is constituted with a comparator 7 to compare the respective intensities of the infrared ray, caught by the two photodiodes 62, and a switching circuit 9 to switch the +, - of an power source 8 according to the output of the comparator 7, and a motor 10, the direction of the rotation of which is controlled by the switching of the switching circuit 9. Then, the detecting device 2A detects the position fo the transmitting or the receiving user, and the control device 2B controls the direction of the camera 1 according to the detected position of the said user, and takes the picture of the user at a suitable direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video telephone device that allows the user to listen to the voice of the other party while viewing the image of the other party.

[Conventional technology]

FIG. 5 is a configuration diagram of a conventional videophone device, in which IA is the videophone device, 1 is a camera provided in the videophone device IA to photograph the sender and receiver, and 2 is a camera of the other party's videophone device IA. 1 is a monitor as a display device that projects the image of the other party, 3 is a button attached to the video telephone device IA for calling the other party, 4 is a button that receives and listens to the voice of the other party, and displays one's own speech. A handset and receiver that converts voice into signals and sends them to the other party.

Next, the operation will be explained.

A person who wishes to make a videophone call first sits down in front of the videophone device IA, picks up the handset 4, and inputs the telephone number of the other party by operating the button 3.

When connected to the other party's video telephone device IA, the camera 1 simultaneously photographs the sender and receiver who are in front of the lens, and displays them on the monitor 2 of the other party's video telephone device IA.

[Problem that the invention seeks to solve]

Conventional videophone devices are configured as described above, and the camera is fixed or the camera can only be turned in the direction of the user using their hands, so there are differences in the user's sitting position, body shape, and posture. However, there was a problem in that the camera could easily take inappropriate images due to poor adjustment of the camera.

The present invention has been made to solve the above problems, and an object of the present invention is to automatically change the direction of the camera to take an appropriate image.

[Means for solving problems]

Therefore, the present invention is characterized in that it is equipped with a detection device 2A that detects the position of the sender and receiver, and a control device 2B that controls the direction of the camera 1 according to the position signal detected by the detection device 2. It is.

[Effect]

The detection device 2A according to the present invention detects the location of the sender and receiver. Based on the position of the sender/receiver detected by the detection device 2A, the control device 2B controls the orientation of the camera 1 to photograph the sender/receiver in an appropriate orientation.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a configuration diagram showing an embodiment of the present invention, in which 2A is a detection device that detects the position of the sender and receiver, and 2B is a camera latch according to the position signal detected by this detection device 2A.
This is a control device that controls the direction of the

Here, the detection device 2A is an LED 5 that emits infrared rays.
3 and a receiver 6 consisting of two photodiodes 62 that receive infrared rays.
B is composed of a comparison circuit 7 that compares the intensities of infrared rays respectively generated by the two photodiodes 62, a power supply 8, and a switching circuit 9 that switches between + and - of the power supply 8 according to the output of the comparison circuit 7. The motor 10 is configured with a motor 10 whose rotation direction is controlled by switching.

FIG. 2 is a diagram showing the locations where the transmitter 5 and receiver 6 are attached. As shown in the figure, the transmitter 5 is attached to the transceiver 4, and the receiver 6 is attached to the camera 1.

Furthermore, FIGS. 3(al) and 3(b) are diagrams showing the circuit configurations of the transmitter 5 and the receiver 6, and as shown in the figures, the transmitter 5 is connected to the power source 5.
1, a resistor 52, and an LED 53 connected in series, and the receiver 6 is composed of a power supply 61, two series circuits each consisting of a photodiode 62 and a resistor 63 connected in parallel.

Next, the operation will be explained with reference to Fig. 4(a) and (bl).When using this device, the user should:
First, pick up the handset 4 and use button 3 to input the telephone number of the other party. At this time, transmitter 5° receiver 6. Comparison circuit 7. The switching circuit 9 starts operating. First, the L of transmitter 5
ED53 lights up and emits infrared rays. The photodiode 62 of the receiver 6 receives this infrared ray. At this time, the third
By the operation of the circuit diagram of the receiver 6 in figure (a), the output signal A
, B have voltage values depending on the amount of light received by each LED 53. At this time, the orientations of the receiver 6 and the camera 1 are adjusted in advance so that the camera 1 faces the optimal direction when the voltages of the output signals A and B are equal. receiver 6
When the output signals A and B are input to the comparator circuit 7, the comparator circuit 7 generates output signals P and Q according to the output signals A and B as shown in FIG. 4(a). In FIG. 4 (al), the input terms A and B are the voltage values appearing in the output signals A and H, respectively. Also, "L" and "H" in the output term are the output signal P.

This is the voltage level generated at Q. This output signal P.

When Q becomes the input signal of the switching circuit 9, the output signal P becomes.

The switching circuit 9 operates according to the voltage level appearing on Q. The switching circuit 9 switches the + and - of the power supply voltage connected to the power input terminal of the DC motor 10 according to the figure 4 (bl).
1. This indicates that the voltage at the positive terminal and the voltage at the negative terminal of the power supply are generated at yz.

By performing such an operation, the switching circuit 9 changes the signal P
, Q controls the rotational direction of the motor 10 and changes the direction of the camera 1. The direction of change is the direction in which the potential difference between the output signals A and B in the receiver 6 integrated with the camera 1 is reduced. Therefore, the switching circuit 9 switches between + and - so that the motor 10 rotates in that direction. When the potential difference between output signals A and B disappears, motor 1
0 stops. At this time, since the orientations of the receiver 6 and the camera 1 are adjusted as described above, the camera 1 is oriented in the optimal photographing direction on its axis. By separately providing one camera control system for each of the vertical and horizontal axes as described above, the camera 1 can be oriented in an optimal three-dimensional direction.

The system is stopped when the user puts down the handset 4.

In the above embodiment, a system for controlling the direction of the camera in either the vertical or horizontal direction has been described, but if two series of circuits shown in FIG. This allows you to control the direction of the camera.

In the embodiment described above, the LED of the transmitter is attached to the bottom of the handset, but the same effect can be achieved even if the LED is attached to any other position on the handset as long as the receiver can receive the transmitter.

It goes without saying that the same effect can be obtained even if the transmitter is not attached to the transmitter or the handset, but is made independent and placed near the user. The same effect can also be expected by integrating the camera with the monitor so that the camera and monitor face in the appropriate direction. The transmitter generates sound waves instead of electromagnetic waves, and the receiver receives the sound waves,
The same effect can be expected even if the output is used to operate the position detection circuit, camera control circuit, and drive device so that the camera faces in an appropriate direction. Also, without using a transmitter,
A similar effect can be expected if the receiver receives electromagnetic waves or sound waves emitted from the human body and uses the output to operate the position detection circuit, camera control circuit, and drive device so that the camera faces the appropriate direction. .

〔Effect of the invention〕

As explained above, according to the present invention, the present invention includes a detection device that detects the position of the sender and receiver, and a control device that controls the direction of the camera according to the signal of the position detected by the detection device. The direction of the camera can be automatically changed according to the situation, which has the effect of always photographing the sender and receiver from an appropriate angle.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing one embodiment of the present invention, Fig. 2 is a diagram of a video telephone device to explain the mounting locations of a transmitter and a receiver, and Fig. 3 (al, 3, b) is a diagram of a video telephone device for explaining the installation locations of a transmitter and a receiver. FIG. 4(a) is a circuit configuration diagram showing the circuit configuration of the receiver and the receiver. FIG. It is a block diagram of a telephone device. IA... Video telephone device, 2A... Detection device, 2B
...Control device, 1...Camera, 2...Monitor, 3
... Button, 4... Handset.

Claims (3)

[Claims] (1) A videophone device that photographs a sender and receiver with a camera and transmits and receives the resulting image along with sound, includes a detection device that detects the position of the sender and receiver with respect to the camera, and a signal of the position detected by the detection device. A video telephone device comprising: a control device for controlling the direction of the camera. (2) The detection device includes a transmitter that is attached to the handset and generates radiation waves such as electromagnetic waves or sound waves, and a receiver that is attached to the camera and outputs a signal corresponding to the position of the transmitter by detecting the radiation waves. The videophone device according to claim 1, characterized in that the videophone device is comprised of a receiver and a receiver. (3) The television as set forth in claim 1, wherein the detection device is constituted by a sensor that detects radiation waves such as sound waves and electromagnetic waves generated from the human body to determine the location of the sender and receiver. Telephone device.