JPS60132477A - Picture synthesizer - Google Patents

Abstract

PURPOSE:To attain both projection and writing of a picture on a projection screen and writing of characters of display of the picture on the screen with a simple and natural feeling drawing means linke a felt pen, etc. CONSTITUTION:A video signal processor 1 including a video recording means projects pictures on a face surface 3 of a projection CRT2 serving as a picture reproducer. These picture are projected with magnification on a transmission type projection screen 8 via the 1st optical system 4. While characters or patterns can be written on the screen 8 with a simple drawing means like a felt pen 10, etc. These characters and patterns on the screen are picked up by an image pickup device 13 via the 2nd optical system 11. The picture information picked up by the device 13 is converted into electric signals within the device 13 and processed by the processor 1 to be supplied to a video recording means for recording. Then this recorded information is reproduced and applied to the input of the CRT2 to be reproduced as the magnified pictures.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image composition device, and more particularly to an image composition device capable of recording image information written on a projection screen and projecting it again on the projection screen. .

Conventional configuration and its problems Conventionally, @-type devices have been used that allow any image to be written on with a light pen using a direct-view CRT. However, it is difficult to use with small designs, and it also has the disadvantage that it feels strange compared to the usual drawing methods such as pencils and pens.

There is also a device that uses an electronic tablet to write characters and figures, but in this case as well, the tablet on which you write and the screen surface on which the image is projected are separate, so you can view them on the same surface at the same time. He has the disadvantage of not being able to write.

OBJECTS OF THE INVENTION The present invention eliminates the drawbacks of the above-mentioned conventional examples, makes it possible to project and project images on the projection screen by using a projection screen, and also makes it possible to use simple and natural tools such as felt-tip pens. The object of the present invention is to provide a uniform composition device capable of writing characters and figures using a drawing means.

Structure of the Invention The image synthesizing device of the present invention includes an image recording and reproducing device, a projection screen onto which a reproduced image obtained by the image recording and reproducing device is projected via a first optical system, and an image on the projection screen. It includes an imaging device that captures an image through a second optical system and converts it into an electrical signal, and a video signal processing device that processes the electrical signal from the imaging device and then adds it to the recording input of the image recording and reproducing device. It is something that

Description of examples FIG. 1 shows an embodiment of the present invention.

Here, 1 is a video signal processing device including video recording means such as a video disk, and a projection CRT as an image reproducing device.
An image is projected on the face surface 3 of 2. This image is captured by the projection lens 5 that constitutes the first optical system 4.
, via the first reflection 116 and the second reflection &*7,
The image is enlarged and projected onto a transmission type projection screen 8. Viewer 9
will see the image on this projection screen 8.

On the other hand, by making the projection screen 8 have a structure that allows drawing with a simple drawing means such as a felt-tip pen 10, characters and figures drawn on the projection screen 8 can be drawn on the second optical An image is taken by the imaging device 13 via the second reflection 117, the first reflection mirror 6, and the light beam separation means 12 that constitute the system 11. The image information captured by the imaging device 13 is converted into an electrical signal within the imaging device 13, then processed by the video signal processing device @1, inputted to the video recording means and recorded, and further reproduced and projected. It is added to the input of the CRT 2 and reproduced as an enlarged projected image through the same process as described above.

The light beam separating means 12 may be, for example, a half mirror or a dichroic mirror.
and the second reflecting mirror 6.7 is connected to the first and second optical system 4.
．． 11 and J3 are shared.

With such a configuration, it becomes possible to superpose, for example, a television broadcast image and handwritten characters or figures. In addition, as shown in FIG. 2, by providing a pattern recognition function in the video signal processing device 1, it is possible to recognize handwritten characters 14 that are difficult to read and curved patterns.
Arrangement of typeface 1. : As letters 15 and smooth designs,
An image can be reproduced on the projection screen 8. Of course, it goes without saying that it can also be used for editing texts.

FIG. 3 shows another embodiment of the first and second optical systems. J, that is, in this example, the beam separating means 12
is placed between the projection CRT 2 and the projection lens 5, and in this way, the second optical system 11 for m'tlA can replace the first optical system 4 for enlarged projection. It has the feature that it can be shared as is.

On the other hand, as shown in FIG.
The optical system 4 and the second optical system 11 may be configured independently from each other.

Figures 5 and 6 show other examples of the arrangement of the projection screen 8, and show examples of structures that are easy for the viewer 9 to read and write, and that take into account ease of use. There is. Here, in the screen shown in FIG. 5, the projection screen 8 is projected toward the viewer 9 side and tilted compared to the screen shown in FIG. 1, so that it can be moved in and out more easily. There is. In addition, in the case shown in FIG. 5, the projection screen 8 is placed in a substantially horizontal state so that writing can be performed more easily.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, it is possible to project and write images on a projection screen, and to write characters and figures using a simple and natural drawing means such as a felt-tip pen. becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram of reproducing handwritten characters as well-printed characters, and FIG. 3 is a diagram showing the components of the first and second optical systems. 4 shows another example of the first and second optical systems, FIG. 1 shows another example of the arrangement of the projection screen, and FIG. 5 shows another example of the arrangement of the projection screen.
FIG. 6 is a diagram showing still another example of the arrangement of the projection screen. DESCRIPTION OF SYMBOLS 1... Video signal processing device, 2... Projection CRT (image reproduction device @), 4... First optical system, 8... Projection screen, 10... Feltben, 11... Second optical system, 12... Light beam separation means, 13... Seed * Device agent Yoshihiro Morimoto Figure 1 Figure 2 Figure 3 Figure 10

Claims (1)

[Claims] 1. An image recording and reproducing device, a projection screen onto which a reproduced image obtained by the image recording and reproducing device is projected via the first optical system, and an image on the projection screen projected onto a second projection screen. The invention comprises an imaging device that captures an il image and converts it into an electrical signal through an optical system, and a video signal processing device that processes the electrical signal from the imaging device and then adds it to the recording input of the image recording and reproducing device. Characteristic image synthesis device. 2. The image synthesizing device according to claim 1, wherein the first optical system and the second optical system are partially or completely shared. 3. The image synthesis apparatus according to claim 1 or 2, wherein the projection screen is a transmission screen. 4. Claim 1, characterized in that the optical path from the image recording/reproducing device and the optical path to the imaging device are separated by a half mirror or a dichroic mirror.
Image synthesis ti haze as described in item 2 or 3.