JPH08195945A - Display device with built-in camera - Google Patents

Abstract

PURPOSE: To obtain a compact device where the communication in eye contact with the opposite party on a screen can be performed without a half mirror, etc. CONSTITUTION: On the front surface of the body 3d of a monitor 3, a transmission type liquid crystal display element 3e is arranged. On the rear surface side, a camera 2 transmitting the element and imaging is arranged so as to be opposed to almost the center of a display screen 3a. In the camera 2, the image pickup timing is set for the T3 period within the display stop period T2 before and after the image display period T1 of each frame. Further, the monitor 3 is provided with a means transmitting and receiving the image information by the camera 2 and a means transmitting and receiving the voice information of a mutual speech.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a display device with a camera such as a videophone and a multimedia type communication device capable of talking while displaying the face of the other party on the screen.

[0002]

2. Description of the Related Art In a conventional display device 3 with a camera of this type, as shown in FIG. 3, the camera 2 is arranged outside the screen (in most cases, on the upper surface of the housing). For high-quality communication, it is not enough that the faces are simply reflected, and eye contact (eye-co
ntact) is required.

However, according to the conventional method, 2 of A and B are used.
It was not possible to make eye contact between two callers while simultaneously looking at the other party's eyes. That is, as shown in FIG. 4A, when A looks at the screen and B in the screen seems to be in line of sight with himself, B is actually looking at the lens of the camera and not looking at the screen. Of. At this time, A appears on the screen in front of B, but A looks at the screen without looking at the lens, so he tends to look down under the lens (when the camera is above the screen) and look down. Therefore, A in the screen of B does not look directly at B from the screen.

If, as shown in FIG. 4B, the lenses are viewed from each other, the screens of A and B show the person directly looking at themselves, but since they are not looking at the screen, communication with eye contact is not possible. Not done Conversely, when viewing each other's screens as shown in FIG. 4C, the prone-looking opponents who are looking at the screen instead of the lenses are reflected, and the lines of sight of the opponents on the screen are slightly deviated.

In order to prevent such a displacement of the eye contact, as shown in FIG. 5, a half mirror 7 is tilted and arranged in front of the screen, the tilt angle is adjusted, and the line of sight of the lens of the camera 2 and the screen 3a are adjusted. There is a way to match the line of sight to see.

[0006]

In the apparatus of FIG. 3 in which the camera is installed outside the screen (for example, on the screen), there is an angular difference (parallax) between the line of sight looking at the camera and the line of sight looking at the center of the screen. Since it exists, there is a drawback that the line of sight cannot be matched with the opponent displayed on the screen. Further, in the device of FIG. 5 in which the half mirror 7 is obliquely installed in front of the screen to eliminate the parallax, there is a drawback that the device becomes large.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to obtain an eye contact capable of aligning the line of sight with the opponent displayed on the screen without increasing the size of the device due to a half mirror or the like. It aims to enable communication.

[0008]

[Means for Solving the Problems]

(1) In the display device with a camera according to claim 1, a transmissive liquid crystal display element is arranged on a front surface side of the housing, and a camera for photographing an image through the display element is arranged on a rear surface side of the display element. There is. (2) In the invention of claim 2, in the above-mentioned (1), the camera is arranged so as to face the center of the display screen.

(3) In the invention of claim 3, in the above-mentioned (1), the image pickup timing of the camera is set within the display stop period before and after the image display period of each frame of the liquid crystal display element. (4) In the invention of claim 4, in the above (1), the image information captured by the camera is transmitted to the display device with a camera of the other party through the transmission path, and the other camera transmitted from the other party device. Image information transmitting / receiving means is provided for receiving the captured image information and supplying it to the liquid crystal display element.

(5) In the invention of claim 5, in the above (4), means for transmitting and receiving the voice information of the mutual call is provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention is shown in FIGS.
Portions corresponding to those in FIG. 5 are designated by the same reference numerals. In the present invention, the transmissive liquid crystal display element 3e is arranged on the front surface side of the housing 3d, and the camera 2 which images the front side through the display element 3e is arranged on the rear surface side of the display element. It is desirable that the camera 2 is arranged so as to face the center of the display screen 3a. The reason is that there is no parallax between the line of sight looking at the camera and the line of sight looking at the center of the display image, and the line of sight can be exchanged with the other party, and the call can be made in a natural state as if the person were actually facing each other.

The image pickup by the camera 2 is carried out while keeping at least a display area of the display element 3e facing the camera in a light transmitting (transparent) state. Moreover, the imaging timing is shown in FIG.
As shown in C, the period is set to a period T3 within a display stop period T2 within a frame period T for displaying one screen of a still image, that is, one frame. Although not shown in the display device with a camera 3, the image information captured by the camera 2 is transmitted to the display device with a camera on the other side through a transmission line (communication line) 6, and the other side device transmits the information. Image information transmitting / receiving means is provided for receiving image information picked up by the side camera and supplying it to the liquid crystal display element 3e. Further, it is possible to provide means for transmitting and receiving voice information of the mutual call. However, these image and voice information transmitting / receiving means may be housed in a housing separate from the body of the display device with a camera.

[0013]

As described above, according to the present invention, the camera 2 is arranged behind the transmissive liquid crystal display element 3e so that the front of the camera can be imaged through the display element 3e. There is almost no parallax between the line of sight and the line of sight looking at the camera, and it is possible to perform eye-contact communication with the other person displayed on the screen without making the device large like the conventional half mirror. .

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the present invention, in which A is a front view and B is
Is a side sectional view, and C is a timing chart.

2A and 2B are a side sectional view and a front view, which are principle views for explaining communication with eye contact according to the embodiment of FIG. 1, which are connected through a communication line.

FIG. 3 is a perspective view of a conventional display device with a camera.

FIG. 4 is a principle perspective view for explaining a state where eye contact cannot be made in the display device with a camera shown in FIG.

FIG. 5 is a perspective view showing the principle of a conventional display device with a camera capable of eye contact.

Claims (5)

[Claims] 1. A camera with a transmission type liquid crystal display element arranged on a front surface side of a housing, and a camera for photographing an image through the display element on a rear surface side of the display element. Display device. 2. The display device with a camera according to claim 1, wherein the camera is arranged so as to face a center position of a display screen. 3. The display device with a camera according to claim 1, wherein the camera sets an image pickup timing within a display stop period before and after an image display period of each frame of the liquid crystal display element. 4. The image information captured by the camera according to claim 1, transmitted to a display device with a camera on the other side through a transmission path, and transmitted from the other side device.
A display device with a camera, comprising image information transmitting / receiving means for receiving image information picked up by a counterpart camera and supplying the image information to the liquid crystal display element. 5. The display device with a camera according to claim 4, further comprising means for transmitting and receiving voice information of a mutual call.