JPS6276854A - Display device - Google Patents

Abstract

PURPOSE:To write a character or graphic form on a screen directly by providing a copying means for editing data read from the screen and copying the result on paper and an erasure means for erasing the display content of the screen. CONSTITUTION:The character and graphic form drawn on the screen 2 partly or entirely is scanned by a read head 11 and the data read by the read head 11 is read in a CPU 12 via a read head input section 17. The CPU 12 adds edition processing to copy the read data and outputs it to a copy output section 20. After the copy output section 20 expands the inputted data into font data such as graphic form or character, the result is outputted to a printer to print out the graphic form or character of the screen 2 on the paper. Further, the normal original content is displayed on the screen 2. Thus, the character and graphic form are written directly on the screen and the display content of the screen is copied on the paper.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a display device suitable for use in conferences and the like.

[Technical background of the invention and its problems]

Conventionally, display devices used for conferences, etc. include slide projectors, overhead brochures, etc., but in all of these, the projected characters and figures cannot be seen unless the indoor lighting is dimmed, or It had the drawback of being hard to look at. Furthermore, special materials such as film are required as original documents for use with these slide projectors, overhead projectors, and the like. Therefore, there are blackboards, whiteboards, etc. that allow you to see projected characters and figures without dimming the lighting, but these require you to copy the original on the spot, which takes a lot of effort and time. There was a drawback that it took a long time. On the other hand, a display device called an electronic black number has been developed, which reduces the characters and figures once written by hand and transfers them onto paper, etc.1 However, as mentioned above, the original display is This has the disadvantage of requiring a lot of effort and time.

[Object of the Invention] In view of the above-mentioned drawbacks, the object of the present invention is to display the contents of a normal manuscript on a screen, to write characters and figures directly on this screen, and to copy the contents displayed on the screen onto paper. It is an object of the present invention to provide a display device that can display images without dimming indoor lighting.

[Summary of the Invention] The present invention provides a screen on which characters, figures, etc. can be directly written by hand, a manuscript reading means for reading the contents of the manuscript, and data read from the manuscript is edited and displayed on the screen. A display device is constituted by a display control means, a screen display content reading means for reading the display content on the screen, a copying means for editing the data read from the screen and copying it onto paper, and an erasing means for erasing the display content on the screen. By doing so, objective 1-1 above is achieved.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a perspective view showing an embodiment of the display device of the present invention. The display device has a rectangular σ-shaped outer frame 1, and a screen 2 is stretched inside the outer frame. At the lower left end of this outer frame 1 is a document input section 3 for reading the inserted document, and a lower M
; At the right end, there is a paper output section 4 that outputs paper on which characters, figures, etc. displayed on the screen are copied. Note that a control section for controlling the operation of the apparatus is housed between the document input section 3 and the paper output section 4.

FIG. 2 is a cross-sectional view of the display device shown in FIG. 1. The screen 2 is stretched between rotating shafts 6 and 7 that are vertically rotatably provided on the outer frame 1 so as to draw an endless track. A lower plate 12 is provided inside the screen 2 to support the screen when writing directly on the screen 2.

The rotating shaft 7 is rotated by a motor 8 (provided on the outer frame 1), and can move the screen 2 in the horizontal direction. 7 The screen 2 is placed inside the outer frame 1 on the rotating shaft 6 side.
A write head 9 contacts the screen and moves vertically to write input data on the screen, and an erase head 1 () erases unnecessary display on the screen. Further, within the outer frame 1 on the side of the rotating shaft 7, there is provided a lead reader 1 that contacts the screen 2 and reads the display on the screen 2 so as to be movable in the vertical direction.

FIG. 3 is a block diagram showing an example of the control section housed in the part indicated by 5 in FIG. Input/output section 15, input/output section 1 for erase head
6. Read head user output section 17, spatula) 'ffi moving section 18, motor drive section 19, copy output weighting and storage section 21 that outputs data for copying characters and graphics on screen 2 are connected. There is.

Next, the operation of this embodiment will be explained. First, when it is desired to display the contents of a manuscript on the screen 2, the manuscript (this can be a manuscript drawn by hand on ordinary paper or printed by a printer, etc.) is inserted into the manuscript input section 3. There is an optical sensor (not shown) etc. inside the document input section 3, and the contents of the document are photoelectrically converted.
4, it is manually input to the CPU 13. The CPU 13 performs an editing process on the input data to cut out the margins of the original, and then stores the edited data in the storage unit 21 . Next, the CPU 13 reads the data read from the original document from the storage section 21, converts it into a light head control pub meter, and sends this parameter to the light head 9 via the light head output section 15. . At the same time, parameters for determining the vertical printing position of the light head 9 are output to the head driving section 18, and parameters for determining the horizontal printing position of the light head 9 are output to the motor driving section 19. Head drive section 18
moves the write head 9 in the vertical direction according to the parameters sent from the CPU 12 and brings it to a predetermined position.

The motor drive unit 19 rotates the motor 8 to drive the screen 2.
is moved in the horizontal direction so that the write head 9 can write predetermined data at a predetermined position. In this way, the data read from the original is developed on the screen 2. It is assumed that the light head 9 has, for example, a plumb shape used in an inkjet printer, and sprays ink onto the screen 2 to draw characters and figures.

Next, the operation of erasing data such as figures and characters drawn on the screen 2 will be explained.

At the same time, the CPU 13 sends a control signal to activate this head via the erase head output section 16.
Head vertical and horizontal positioning parameters are continuously output to the head drive section 18 and motor drive section 19, and the erase head 10 scans the entire surface of the screen 2 to erase characters and figures written on the screen 2. do. This eraser pad 10 has a member that absorbs, for example, ink sprayed onto the screen 2,
The displayed characters and figures are erased by absorbing ink on the screen 2 by this member.

Further, it is assumed that a person can write letters and figures by hand on this screen 2, and the writing instrument used here contains ink or the like that can be erased with the erase head 10. Furthermore, the characters and figures written on the screen 2 by hand can be erased by hand using a device such as a blackboard cleaner similar to the member used in the eraser pad 10.

Next, the operation of copying characters and figures displayed on the screen 2 onto a sheet of paper will be explained.

In this case, the CI) U13 sets parameters for positioning the lead head 11 in the vertical and horizontal directions to the head drive unit 1.
7 and the motor drive unit 19 to move the lead rad 11 vertically and the screen 2 horizontally to draw characters and figures drawn on a part or all of the screen 2 with the lead rad 11. Scan and rad 11 to this lead
The read data is read into the CPU 12 via the read head input section 17. The CPU 12 applies editing processing to copy the read data and outputs it to the copy output section 20.

The copy output unit 20 converts the input data into 7 types such as figures, characters, etc.
After being developed into ont data, this is output to a printer (not shown) or the like to print the figures, characters, etc. on the screen 2 on paper.

According to this embodiment, the contents of a normal manuscript can be displayed on the screen 2, characters and figures can be written directly on this screen, and the contents displayed on the screen 2 can be copied onto paper. Furthermore, since figures, characters, etc. are drawn on the screen 2 using ink or the like, there is no need to dim the indoor lighting. Moreover, since the original used can be a normal one, it does not take time and effort to create a special original.

〔Effect of the invention〕

As described above, according to the display device of the present invention, normal manuscript contents can be displayed on the screen, characters, figures, etc. can be written directly on this screen, and the contents displayed on the screen can be copied onto paper. Furthermore, there is an effect that the display contents can be visually recognized without dimming the indoor lighting.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the display device a of the present invention, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. 3 is an example of the control section of the display device shown in FIG. FIG. 2...-Screen 6.7...Rotation axis 9...Write head 10...Erase head 11...Read head 13...CPU 14...Reading output part 15-°'Write head Servant output section 16...
Erase head input/output section 17...Read head output section 18...Head drive section 19...Motor drive section Addition...Copy output section 21...Storage section

Claims (1)

[Claims] A screen on which characters, figures, etc. can be directly written by hand; a document reading means for reading the contents of the manuscript; a display control means for editing the data read from the manuscript and displaying the edited data on the screen; 1. A display device comprising a screen display content reading means for reading, a copying means for editing the data read from the screen and copying it onto paper, and an erasing means for erasing the display content on the screen.