JPH0687294A - Electronic blackboard device - Google Patents

Abstract

PURPOSE:To obtain an electronic blackboard device, with multiple writable facets where data can be written and erased, of an endless sheet structure having, at least, a single reversibly foldable area in parallel with the writable facet of a writing medium of a writable/erasable material. CONSTITUTION:If it is necessary to check an image of written data again or write additional data, an endless sheet 25 is moved reversibly or normally and stopped so that additional data is written or already written data is corrected. After that, data is printed by the same procedures. Part of the endless sheet 25 is folded starting from a roller 28 as a starting point behind the writable facet, and is positioned almost in parallel with the writable facet as a reversibly folded area. Thus the number of image-bearing facets of the endless sheet 25 is increased. Consequently, it is possible to provide the increased number of image-bearing facets and select any other writable facet in a short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blackboard device capable of printing texts and figures written on a blackboard used for meetings, meetings and the like.

[0002]

2. Description of the Related Art For conventional meetings, briefing sessions, meetings, etc., the contents of the meetings are written on the blackboard, and the matters decided according to the progress, information such as figures, etc. are transcribed in notebooks, Or I was copying the notes of one transcriber.

[0003]

Therefore, the above-mentioned conventional technique has the following drawbacks. (1) All or a few transcribers cannot concentrate on meetings and meetings. (2) It takes time to hold a meeting in accordance with the writing speed of the transcription person. (3) Improper transfer by the transcriber occurs, resulting in insufficient communication. (4) Copying is not available immediately because of the transcription of the transcription person.

In order to solve these drawbacks, the present apparatus is capable of immediately printing sentences and figures written on the blackboard at the seat, reusable use of the blackboard surface, and memorizing the written contents at any time. You can print, you can communicate with the outside, you can send and receive the required screen,
An object of the present invention is to provide an electronic blackboard printing apparatus that can be printed, can be easily written and erased, can provide a large number of writing surfaces, and can be miniaturized.

[0005]

According to the present invention, the writing information written on the writing surface is optically read, the read image information is temporarily stored, and print recording or transmission is performed based on the image information. In the electronic blackboard device, the writing medium for writing the writing information is made of a writable and erasable resin material,
In addition, the endless sheet structure has at least one reverse folding surface that is substantially parallel to the writing surface, and is characterized by having a multi-sided writing surface that provides a large number of writing surfaces.

[0006]

According to the present invention having the above-described structure, the writing medium is made of the resin material, so that the writing information can be repeatedly written and erased on the writing surface. Further, since the endless sheet structure having at least one step of the reverse folding surface that is substantially parallel to the writing surface can be provided, a large number of writing surfaces can be provided and processing can be performed in a short time when moving to another writing surface.
Further, since the whole length of the writing medium becomes long in order to provide a very large number of writing surfaces, at least one step of reverse folding is almost parallel to the writing surface when the writing medium is mounted on the electronic blackboard device having a prescribed size. With the endless sheet structure having the surface, the writing medium can be stored compactly, and thus the electronic blackboard device can be downsized.

[0007]

FIG. 2 is a perspective view showing the appearance of an embodiment of the present invention. In the figure, 1 is a housing, 2 is a blackboard sheet,
3 is a concave tray on which a felt-tip pen or the like is placed, 4 is a scanning unit of the apparatus, 5 is a tray for printing paper, 6 is a foot of the apparatus, and 7 is a caster. The operation of this device will be described with reference to FIG. The names of FIG. 1 are shown below. In the figure, 11-2a
Is a shaft for directly connecting a drum 27-2 and a motor 26, which will be described later, 17 is a fluorescent lamp of a light source, 18 is a light beam, 19 is a lens, 20 is an image sensor, 21 is an image sensor 20.
A circuit unit with a printed circuit board, a printing device 22 for printing, a printing paper 23, a flat cable 24 connecting the circuit unit 21 and the printing device 22, 25 an endless sheet, and 25-1 a sprocket hole in the endless sheet 25. , 26 are motors, 27-1 and 27-2 are drums, and 28 is a roller which folds the endless sheet 25 to form a reverse folding surface. FIG. 3 is a partially enlarged view of the drum 27-2 of FIG.
27-2a is a sprocket. FIG. 4 shows another basic structure of the endless seat 25 of FIG. The endless sheet 25 shown in FIG. 4 differs from the endless sheet shown in FIG. 1 in that it is not provided with a reverse folding surface, and the operation is similar to that of the apparatus shown in FIG. 1 except that the writing surface is reduced.

The operation of the embodiment shown in FIG. 1 will be described below.
First, the motor 26 is rotated by a signal from the operation unit 4 in FIG. 2 to rotate the drum 27-2 via the shaft 11-2a. The drum 27-2 has a sprocket 27-2a as shown in FIG. 3 and is inserted into the hole 25-1. As a result, there is no slippage between the drum 27-2 and the sheet 25. Then, a part of the endless sheet 25 is folded back behind the writing surface with the roller 28 as a starting point and becomes a reverse folding surface that is substantially parallel to the writing surface. As a result, the number of screens of the endless sheet 25 increases. Further, by arranging a large number of folding rollers 28 and providing a large number of reverse folding surfaces that are substantially parallel to the writing surface of the endless sheet 25, a very large number of screens can be secured by increasing the total length of the endless sheet 25. In addition, the entire endless seat 25 can be compactly stored despite the increase in the total length of the endless seat 25. The endless seat 25 moves at a constant speed by the rotation of the motor 26. The endless sheet 25 passes through drums 27-1 and 27-2 which are normally or reversely rotated by a motor 26, and folds back and forth starting from each roller 28 and reciprocates.

Then, the text or figure written on the endless sheet 25 moves downward and the light illuminated by the fluorescent lamp 17 becomes a light beam 18 and is projected onto the image sensor 20 through the lens 19. The screen projected by the image sensor 20 is converted into an electric signal as one line in the horizontal direction, and the screen is formed as a vertical electric signal in synchronization with the feed speed of the end sheet 25 in the vertical direction. It is sent from the circuit unit 21 to the printing device 22 via the flat cable 24. The printing device 22 prints on a predetermined printing paper 23 by an electric signal on the screen. The above operation is the explanation for printing the screen.

According to the apparatus of the present embodiment, when it is necessary to see the written screen again, or when it is desired to perform additional writing, the endless sheet 25 is moved forward or backward to stop, and additional writing or correction is performed. Can be added. After that, printing can be performed again by the same operation as described above. When the printing is completed, if a sentence or figure on the endless sheet 25 is to be erased, a signal is sent from the operation unit 4 to the motor 26.
This allows you to stop sending one screen at a time and erase with the blackboard eraser. The endless sheet 25 can be easily erased by friction by using a material such as mylar film or fluorine film. It is also possible to use a method that uses ink that can be erased by irradiating light such as ultraviolet rays.

Next, there are an apparatus to which a memory function is added and an electronic blackboard apparatus to which a communication function is added to the above embodiment. Figure 5
The block diagram is shown in. In the explanation of the names in FIG.
Is a roll around which printing paper is wound, 51 is a roller for pressing 23 printing papers against the printing head of 52, and 52 is a printing head. As the print head, for example, a thermal head for recording on thermal paper is used. For others, the name of the part is described in the block diagram.

Next, the operation of FIG. 5 will be described. A command is transmitted to the motor drive circuit via the control unit by the signal sent from the operation unit 4, the drums 27-1 and 27-2 are rotated by the operation described in FIG. 1, and the endless sheet 25 is sent at a constant speed. . The sentences, symbols, and figures written on the endless sheet 25 are illuminated by the fluorescent lamp 17, pass through the lens 19, and form an image on the image sensor 20. The image sensor 20 converts light into an electric signal, and the electric signal is converted into a circuit portion 21 according to a predetermined method.
Then, it is assembled and input to the encoding / decoding circuit section.
Here, the analog signal is encoded into a digital signal and sent to the external line via the modem and the line control unit. A signal input from an external line is input to a coding / decoding circuit unit via a line control unit and a modem, where a digital signal is converted into an analog signal and input to a print control unit. The input signal is converted into a signal for driving the print head 52 and sent to the print head 52. The control unit drives the motor drive unit in response to this signal to feed the printing paper 23 from the printing paper roll 50 by the roller 51, and the printing head 52 prints on the printing paper 23. The above is the description of the operation when the communication function is added.

Next, the operation when a storage device is added will be described. Similar to the operation when the communication function is added, the optically read image is input from the circuit unit to the storage device via the encoding / decoding circuit unit. Here, it is written and stored in the storage element according to a fixed procedure. If necessary, the accumulated information is transmitted to the storage device via the control unit by a signal from the operation unit 4, and appropriate information is sent from the storage device to the print control unit. As a result, it is possible to print on the printing paper 23 as with the communication function. Further, a device having only one of these functions or a device having all of these functions is also possible.

[0014]

As described above, according to the present invention,
It has the following effects. 1. Since the sheet has an endless sheet structure, the number of screens is large, and the sheet can be moved to another writing surface in a short time. 2. Since it is equipped with a printing device, you can print immediately when needed. 3. You can correct and add sentences and figures on the sheet. 4. The printed text and figures can be easily erased so that they can be used many times. 5. Since no transcription from the blackboard is required for meetings and meetings, everyone can participate and concentrate on meetings and meetings. 6. Since the transcription from the blackboard is unnecessary, the progress of meetings and meetings is fast. 7. Since there is no transcription from the blackboard, it is possible to prevent transmission due to erroneous transcription. 8. The structure is simple. 9. Manufacturing cost is low. 10. By using an endless sheet having at least one reverse folding surface that is substantially parallel to the writing surface when the total length of the writing medium is increased in order to provide a large number of writing surfaces, the external shape of the electronic blackboard device itself is thin. Is possible. 11. The text, symbols, and figures written on the sheet can be converted to electric signals and sent to the outside, and received from the outside and printed. 12. You can memorize the sentences, symbols, and figures written on the sheet, recall them when necessary, and print the required number of sheets.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of an embodiment of the present invention.

FIG. 3 is a diagram showing a structure of a sprocket part in FIG.

FIG. 4 is a view showing another structure of the endless seat of FIG.

FIG. 5 is a block diagram of the electrical circuit of the device according to the invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 case 2 sheet 3 pen saucer 4 operation part 5 receiving of printing paper 6 feet 7 caster 8 timing belt 9 roller 17 fluorescent lamp 18 light beam 19 lens 20 image sensor 21 circuit part 22 printing device 23 printing paper 24 flat cable 25 endless sheet 26 Motor 27-1 Drum 27-2 Drum 28 Roller 50 Printing Paper Roller 51 Roller 52 Printing Head

Claims (1)

[Claims] 1. An electronic blackboard device for optically reading writing information written on a writing surface, temporarily storing the read image information, and performing processing such as print recording or transmission based on the image information. The writing medium described in 1. has an endless sheet structure made of a writable and erasable resin material and having at least one step of reverse folding surface that is substantially parallel to the writing surface, and is a multi-sided writing material that provides a large number of the writing surfaces. An electronic blackboard device having a surface.