JPS6248576A - Image display system - Google Patents

Abstract

PURPOSE:To enable free writing without damaging the images stored in an image file and enable the written images to be printed out or transmitted to other display device, by combining an overhead projector (OHP) with a liquid crystal display panel and superimposingly projecting images on a white board. CONSTITUTION:A liquid crystal display panel 1 and a projector recording medium 11 consisting of a transparent film of the OHP 10 are incorporated in an OHP 10 in the state of being laid on each other. An image transmitted from remote place is displayed on the panel 1, is enlargedly displayed on a white board 14, while another image is written in situ on a medium 11 or the white board 14 with a felt-tip marker or the like, and the corrected image is projectedly displayed on the white board 14 without damaging the stored images. On the other hand, a photoelectric converter 20 is provided for receiving the image displayed on the white board 14 in a contracted state. The images separately drawn on the panel 1 and the medium 11 can be printed out in a superimposed state, and can be displayed on other liquid crystal display panel provided remotely.

Description

[Detailed Description of the Invention] [Summary] By combining an overhead projector and a liquid crystal display panel and projecting images onto a whiteboard, images stored in an image file can be freely written on without being damaged. Writing [Industrial Application Field] The present invention relates to an image display system that combines a liquid crystal display panel and an overflow projector.

In recent years, in meetings held in the same room or remotely, materials prepared in advance are often displayed on a screen and the meeting proceeds based on this.

At this time, there is a desire to be able to print the image displayed on the screen in order to easily add notes to the document and to avoid the trouble of each person copying the image displayed on the screen and to avoid erroneous copying.

[Conventional technology]

Conventionally, a whiteboard with a printer has been widely used as an image display device equipped with a printer function.

FIG. 2 is a perspective view of the whiteboard with printer, and FIG. 3 is a configuration diagram.

In FIGS. 2 and 3, a board frame 32 with a white film 30 stretched within a bordered frame is attached to the front side of the board main body 31.

The white film 30 is a milky-white polyester film, for example, and is coated with a fluorine-based resin or the like so that writing can be written on the surface with an oil-based marker (for example, a felt marker with marker ink) and erasable.

This white film 30 is stretched in the form of a belt over rolls 33, 34 mounted oppositely on both sides of the board frame 32. By driving this roll 33 by a motor (not shown), the white film 31 can be rotated in the direction indicated by the arrow.

Note that when writing or erasing an image on the surface, the white film 30 is
An 8-film back board 35 is attached to the board body 31 in close proximity to the back surface of the board.

When the image is drawn on the entire surface of the screen of the white film 30 exposed in the board frame 32 part, the roll 33 is driven to rotate the screen on which the image has been written to the back side, and a new blank screen of the white film 30 is drawn. It is exposed inside the board frame 32.

Next, the printer function will be explained.

A light source that irradiates the white film 30 vertically is installed behind the roll 34, and when the white film 30 rotates, it irradiates the drawn screen and transfers the image to the mirror 36.
to project. The optical image projected onto the mirror 36 is then transferred to a semiconductor photoelectric converter 37 (for example, C
The image is formed on the light-receiving surface of a CD array, etc.).

The semiconductor photoelectric converter 37 converts this optical image into a width of 10, for example.
The data is scanned and read in a crm column, resolved as black and white dots, converted into an electrical signal, and sent to the printer 38.

Based on this electrical signal, the printer 38 prints dots on the A4 paper 13, for example, and makes a reduced copy of the image drawn on the surface of the white film 30.

Although the structure of a whiteboard with a printer is as described above, an overhead blogging data device is a means for displaying materials on a large screen at a meeting or the like, and is capable of writing on the recording medium that is the material on the spot.

Further, devices using a liquid crystal display panel are known as image display devices that can transmit and receive images to and from remote locations.

[Problem that the invention seeks to solve]

However, although the conventional whiteboard with printer and overhead projector described above have the advantage of being able to write on-the-spot, they have the problem that it is difficult to send and receive images to and from remote locations.

Additionally, devices using liquid crystal display panels have the advantage of being able to send and receive images to and from remote locations, but they also have the problem of making it difficult to write on images on the spot. be.

[Means for solving problems]

In order to solve the above conventional problems, the present invention provides a liquid crystal display panel 1 that displays a received image or selects and displays a desired image from an image file, as shown in FIG.
A liquid crystal display panel 1 is installed below a writable projector recording medium 11 so as to be layered, and an overhead display is provided in which an image on the liquid crystal display panel 1 and an image on the projector recording medium 11 are projected and displayed in a superimposed state on a whiteboard 14. The image projected onto the projector 10 and the whiteboard 14, or the image directly drawn on the whiteboard 14, is reduced and received, and these images are converted into a printer.

Alternatively, the photoelectric converter 20 may be configured to include a photoelectric converter 20 for transmitting data to another display device.

[Effect]

According to the means of the present invention, the liquid crystal display panel 1 and the projector recording medium 11 made of a transparent film of the overhead projector 10 are stacked and incorporated into the overhead projector.

Therefore, images transmitted from a remote location can be displayed on the LCD panel 1.
Of course, you can enlarge the image and display it on the whiteboard 14, or you can write on the projector recording medium 11 or the whiteboard 14 on the spot using a felt-tip pen, etc., and display it on the liquid crystal display. Images that have been corrected, corrected, etc. can be projected and displayed on the whiteboard 14 without damaging the images stored in the image files of the panel 1 or the like.

On the other hand, since it is equipped with a photoelectric converter 20 that receives the image projected and displayed on the whiteboard 14 in a reduced state, images drawn separately on the liquid crystal display panel and the projector recording medium 11 can be superimposed. , can be printed and recorded. Furthermore, it is easy to display the signal as an electric signal on another liquid crystal display panel installed at a remote location.

〔Example〕

The present invention will be specifically explained below with reference to illustrated examples.

FIG. 1 is a configuration diagram of one embodiment of the present invention, in which an overhead projector 10 has a projector recording medium 11 made of a transparent film or the like that can be easily drawn with a felt-tip pen or the like on the top surface of a box-shaped housing. "
There is C.

A light source 16 is installed at the bottom of the housing, and a Fresnel lens 15 having a rectangular plate shape is mounted parallel to the lower part of the projector recording medium 11 to project an image onto the projector recording medium 11.

A half mirror 13 is provided above the projector recording medium 11 via a lens 12, and the projector recording medium 11
The image is reflected and projected by a half mirror 13 onto a vertically installed whiteboard 14.

On the other hand, the reflected light from the whiteboard 14 is a half mirror.
A photoelectric converter is installed on the opposite side of the half mirror 13 from the whiteboard 4 so that the screen of the projector recording medium 11 is reduced by the converging lens 21 and formed into an image on the light receiving surface 20a. (For example, a CCD array) 20 is installed.

The photoelectric converter 20 converts the image projected onto the light receiving surface 20a into
For example, it scans and reads lines with a width of 10 μm, resolves them as black and white dots, and converts them into electrical signals.

Note that the photoelectric converter 20 is connected to drive a printer and another liquid crystal display panel (both not shown) installed at a remote location.

Also, a projector recording medium 11 and a Fresnel lens 1
A matrix-type liquid crystal display panel 1 using, for example, a TN effect is inserted in layers between the panels 5 and 5 and assembled therein.

This liquid crystal display panel 1 is driven by a panel driving device 2 and is configured to display images transmitted from other photoelectric converters installed in remote locations.

Further, the liquid crystal display panel 1 is configured to be able to select and display a desired file from among the files stored in the image file chamber provided in the panel drive device 2.

As described above, since it is configured by combining the overhead projector 10 and the liquid crystal display panel 1, an image transmitted from a remote location is displayed on the liquid crystal display panel 1, and the image is enlarged and displayed on the whiteboard 14. Of course, you can write on the projector recording medium 11 on the spot using a felt-tip pen, for example, and write on the liquid crystal display panel 1.
can be projected and displayed on the whiteboard 14, superimposed on the image.

Further, since the photoelectric converter 20 is provided, images drawn separately on the liquid crystal display panel 1 and the projector recording medium 11 can be printed and recorded in a superimposed state.

It can also be displayed as an electrical signal on another liquid crystal display panel installed at a remote location.

It goes without saying that even if the image on the liquid crystal display panel 1 is corrected by writing to the projector recording medium 11, the original image stored in the image file of the liquid crystal display panel 1 will not be damaged.

Furthermore, although an image drawn directly on the whiteboard 14 with a felt ben or the like can be printed and recorded as described above, it is of course possible to display it as an electrical signal on another liquid crystal display panel installed at a remote location. It is.

〔Effect of the invention〕

As explained above, the present invention combines an overhead projector and a liquid crystal display panel, and is provided with a photoelectric converter, so that it is possible to write freely without damaging the original image stored in the image file of the liquid crystal display panel. It has excellent practical effects, such as being able to project and display a written image on a screen, and also being able to print a written image or transmit it to another display device.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is a perspective view of a conventional whiteboard with a printer, and FIG. 3 is a configuration diagram of a whiteboard with a printer. In the figure, 1 is a liquid crystal display panel, 2 is a panel driving device, 10 is an overhead projector, 11 is a projector recording medium, 13 is a half mirror 2, 14 is a whiteboard, 15 is a Fresnel lens, 20.37 is a photoelectric converter, 30 is a white film, and 38 is a printer.

Claims (1)

[Claims] Below a liquid crystal display panel (1) that displays a received image or selects and displays a desired image from an image file, and a writable projector recording medium (11),
The liquid crystal display panel (1) is assembled in a layered manner, and the image on the liquid crystal display panel (1) and the projector recording medium (
11) on the whiteboard (14)
); an overhead projector (10) for projecting and displaying an image projected onto the whiteboard (14), or an image directly drawn on the whiteboard (14), reduced in size and received; Alternatively, an image display system characterized by comprising a photoelectric converter (20) for transmitting to another display device.