JPH0222989A - Television telephone system - Google Patents

Abstract

PURPOSE:To easily perform the identification of a document, etc., and position regulation by displaying a monitor picture as an image equivalent to a transmission picture i.e., the image whose right and left sides are inverted from the image reflected on a mirror. CONSTITUTION:By mounting a second plane mirror 14 on a camera apparatus including a first plane mirror 7 by attaching inclination of 45 deg. on its optical axis in a horizontal direction, the right and the left sides of the horizontal scanning directions of a camera 5 and the monitor 1 can be inverted interlocking with the above mounting of the mirror. Therefore, in case of transmitting the document, etc., it is possible to generate the image whose right and left sides are inverted from that of the image displayed on the mirror in its own monitor and the transmission picture, and also, by bending the optical axis by using two plane mirrors 7 and 14, the range of photography can be set on a pedestal 4. In such a way, it is possible to easily perform the identification of the document, etc., and the position regulation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video telephone device, and particularly to a video telephone device suitable for transmitting and displaying documents and the like.

Conventional technology In recent years, analog telephone lines have been used to capture black and white still images.
A still image videophone device that can transmit frames frame by frame has been developed.

An example of a conventional still image videophone device will be described below with reference to one drawing. Figure 3 (&).

1) is an overall perspective view and a side view of a conventional still image video telephone. In Fig. 3, 1 is a monitor part, 2 is an imaging window, 3 is a main body part, 4 is a pedestal part, 5 is a camera main part, and 6
7 is an imaging lens, 7 is a first plane mirror, and 8 is a fixing metal fitting. The first plane mirror A is attached to a fixture 8 and fixed to the camera body 6. The light incident from the imaging window 2 passes through the first plane 'a7 attached to the fixture 8, and its optical axis is bent by 90 degrees, and an image is formed on the imaging surface of the camera body 5 through the imaging lens 6. . The image on the imaging surface is photoelectrically converted, and the image is displayed on part 1 of the monitor of the receiving phone.
will be displayed on the screen.

An outline of the transmission/reception system for the above-mentioned conventional still image video telephone device will be explained with reference to FIG. In Figure 4, 9
is an imaging unit, and 1o is an image processing circuit.

11 is a part of the monitor, and 12 is a transmitting/receiving circuit. Imaging section 9
When a single image is not being transmitted, the video signal output from the image processing circuit 10 undergoes image processing and is displayed on a monitor part 11. On the other hand, when one image is transmitted, it is captured in the frame memory in the one image processing circuit 1o and is stored as one artist data.
The signal is then modulated into a voice band signal of 3001 to 3.4 KHz.

It is sent out to the telephone line via the transmitting/receiving circuit 12.

At this time, during the above-mentioned non-transmission period, the same image as when the object is reflected in a mirror is displayed on the monitor part 11. Also, during transmission, the image projected on the monitor part 11 of the other party through the telephone line is a mirror image, a horizontally reversed image, or an image of the other party facing each other if the two shims are located between the shims. is displayed.

Problems to be Solved by the Invention However, in the configuration of the conventional still image videophone device as described above, when attempting to transmit a single document, etc.,
The image projected on the monitor part 11 is not the same as the image reflected in a mirror, and there are problems in that it is difficult to identify documents, etc. on the monitor part 11, and the position of documents, etc. in relation to the shooting range of the camera. The problem was that it was difficult to regulate.

In view of the above threshold point, the present invention uses a simple configuration when transmitting one document, etc. to make the image displayed on the monitor and the transmitted image a mirrored image and a horizontally reversed image. An object of the present invention is to provide an image display device that allows easy position regulation.

Means for Solving the Problems In order to solve the above-mentioned problems, the video telephone device of the present invention has an optical axis attached in front of the imaging lens system with an inclination of 46'' to the vertical plane containing the lens system. A first plane mirror for refraction, and four mirrors arranged horizontally on its optical axis.
It has a second plane mirror rotatably mounted with an inclination of 5 degrees, and displays a camera that captures the image formed by the imaging lens system, and an image captured by the camera or an externally input image signal. The horizontal scanning direction of the monitor is horizontally reversed in conjunction with the rotation of the second plane mirror.

Operation The present invention applies to a camera device including a first plane mirror when transmitting a single document or the like using the above-described configuration.

A second plane mirror is installed on the tip axis with a horizontal inclination of 45 degrees, and in conjunction with this, the horizontal scanning direction of the camera is reversed left and right.
The image of me that has been horizontally reversed by the plane mirror is reversed again by horizontally reversing the horizontal scanning direction of the camera, resulting in an image that is horizontally reversed from the image reflected in the mirror. At this time, the horizontal scanning direction of the monitor is also reversed horizontally in conjunction with the attachment of the second plane mirror. Therefore, the monitor image is the same as the transmitted image, that is, the image reflected in the mirror and the horizontally reversed image, making it easy to identify documents, etc. Furthermore, by attaching a second plane mirror, the camera's shooting range can be expanded. is placed on the pedestal, and the position of one document, etc. can be easily regulated.

Embodiment 1 A still image video telephone apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1(&) and 1(b) are an overall perspective view and a side view showing an embodiment of an image display device for a still picture videophone according to the present invention.

In FIG. 1, 1 is a part of the monitor, and 2 is an imaging window.

3 is a main body, 4 is a pedestal, 6 is a camera body, 6 is an imaging lens, 7 is a first plane mirror, 8 is a fixing metal fitting, and 1 and above are the same as those shown in FIG. 3.

13 is an arm; 14 is a second plane mirror;
Accordingly, the second plane mirror 14 is attached to the camera device including the first plane mirror 7 with an inclination of 45° in the horizontal direction on its optical axis. The image display device for a video telephone configured as described above will be described below with reference to FIG. 2 using an example of its use.

In FIG. 2, 15 is a monitor horizontal deflection circuit, 16 is a relaym, and 17 is a horizontal winding of the deflection yoke.

1B is the CRT, 19 is the horizontal deflection circuit of the camera, 20 is the relay B, 21 is the horizontal winding of the yoke assembly, 22
is a business controller, 23 is a 10B voltage source for the videophone, and 24 is a switch.

Second plane! If a14 is 1, for example, when transmitting a person's image, relay 16. Each contact piece of B20 is a, C
, and the same image as if reflected in a mirror is displayed on the own monitor, and the image of the person reflected in the mirror is displayed on the other party's monitor.

Next, the second plane mirror 14 is attached to the camera device including the first plane mirror 7 with an inclination of 46 degrees in the horizontal direction on its tip axis.For example, when transmitting one character, the switch 2
4 is turned on in conjunction with this, voltage is applied to the 10B voltage source 23 of the videophone, the series relay 1s, and B20, and each contact piece of the relay is switched to a, o, and d. and the horizontal scanning direction of the monitor is reversed left and right. On my own monitor, there is an image of me that has been left and right reversed on the second plane @14, and an image of me that has been left and right flipped twice by the horizontal deflection scanning of the camera and monitor. Also on the monitor of the other party, the mirror which has been horizontally reversed by the second plane mirror 14 is horizontally reversed by the horizontal deflection scanning of the camera, and the image reflected on the same mirror as the self-monitor and the horizontally reversed image are displayed.

As described above, according to the present embodiment, by attaching the second plane mirror 14 to the camera device including the first plane mirror 7 with an inclination of 45 degrees in the horizontal direction on its optical axis,
In conjunction with this, by horizontally reversing the horizontal scanning direction of the camera and monitor, when transmitting a document, etc., it is possible to create an image that is horizontally reversed from the image reflected in the mirror in the self-monitoring and transmission images. Furthermore, by bending the optical axis using one or two flat sheets, the photographing range can be set on the pedestal, and the position of one document, etc. can be regulated.

In addition, when using a line-sequential liquid crystal display as a monitor,
Use memory! Effects of the Invention As described above, according to the present invention, in front of the imaging lens system, the vertical plane including the lens system is tilted by 45 degrees. By attaching a second plane mirror horizontally at an angle of 45 degrees on the front axis of the camera device, the camera device has the function of protruding a first plane mirror and refracting the optical axis. The horizontal scanning direction of the monitor can be reversed left and right, and the own monitor image and transmitted image can be reversed left and right compared to the image reflected in the mirror, making it easy to identify documents, etc. By using two sheets, it is possible to easily control the position of documents, etc., so that the photographing range is on the pedestal.

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) are an overall perspective view and a side view of a still image video telephone device according to an embodiment of the present invention, and FIG. 2 is a still image television for explaining the usage state of the image display device. A circuit diagram of a horizontal deflection system of a telephone device. FIGS. 3(a) and 3(b) are an overall perspective view and a side view of a conventional still image video telephone device, and FIG. 4 is a block diagram showing the basic structure of the still image video telephone device. 1... Part of the monitor, 2... Imaging window, 3
...Body part, 4...Pedestal part, 6...
...Camera body, 6...Imaging lens, 7...
...First plane mirror, 8...Fixing bracket, 9.
...Camera, 1o...Image processing circuit, 1
1... Monitor, 12... Transmitting/receiving circuit, 13... A-A, 14... Second plane mirror, 15... Monitor Horizontal deflection circuit, 16.
20...Relay, 17...Horizontal winding of deflection yoke, 18...CRT, 19...
・Camera horizontal deflection circuit, 21...Yoke assembly, 22...Visicon, 23...
・Videophone 10B voltage, 24... switch. Name of agent: Patent attorney Shigetaka Awano and 1 other person1-
11 monitor evil 2--1 my turtle 2 3-main salary section 4...-pedestal section 1 am 15-mo 16-- ri 17--- full +8-CR 19--horizontal deflection of the sword medal Circuit A Younomizuhaya Kei model r # Kiyoshi Simple circuit diagram 4 ρ - Bijikotsu 23 - Videophone medium B voltage

Claims (1)

[Claims] 4 in front of the imaging lens system in the vertical plane containing this lens system.
A first plane mirror for refracting an optical axis attached with an inclination of 5 degrees, and a second plane mirror attached rotatably with an inclination of 45 degrees in the horizontal direction on the optical axis. , the horizontal scanning direction of a camera that captures an optical image formed through the imaging lens and a monitor that displays the image captured by this camera or an external input image signal is linked to the rotation of the second plane mirror. A video telephone device characterized in that the video telephone device reverses the left and right images of itself and makes its own monitor image and transmitted image a mirrored image and a left and right reversed image.