JP2003001994A - Electronic blackboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that since a writing surface has a limit in the number of pages in an electronic blackboard having a recording head for recording on a rewritable recording medium, an erasing head for erasing a content recorded by the recording head, a CPU, a memory and a controller, at the time of using many pages or using for arrangements of several times, when the writing surface is erased, an addition cannot be filled in the page later. SOLUTION: The electronic blackboard comprises the rewritable recording medium, a transparent resin sheet superposed on the medium so that the medium and the resin sheet can be independently conveyed, and an image reading sensor for reading the content written on the resin sheet.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electronic blackboard using a rewritable recording medium.

[0002]

2. Description of the Related Art In a conventional electronic blackboard, a page written by a felt pen is wound around a writing surface (page) made of a synthetic resin film, the content is read by a CCD sensor or the like, and the content is stored as data or a paper. The printing surface can be continuously used for 4 and 5 pages.

Therefore, when the pages to be used are increased and all the pages have been used, each of the pages that have been used is read, printed or saved as data, and then the written contents are erased and then again. It is used repeatedly. In addition, when using it for several meetings, you may want to continue to fill in based on the previous minutes. In such a case, the previous minutes will be re-entered or a paper copy will be distributed.

[0004]

Since the number of pages on the writing surface is limited as described above, the writing surface is erased when many pages are used or when several times of meetings are used. Then, there is a problem that the page cannot be additionally filled later.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a recording head for recording on a rewritable recording medium, an erasing head for erasing the contents recorded by the recording head, a CPU,
In an electronic blackboard having a memory and a control unit, a rewritable recording medium and a transparent resin sheet are overlapped with each other so that they can be independently conveyed, and an image reading sensor for reading the contents written in the transparent resin sheet is provided. To do. Further, in an electronic blackboard having a recording head for recording on a rewritable recording medium and an erasing head for erasing the contents recorded by the recording head, a CPU, a memory and a control unit, the rewritable recording medium is wiped out by wiping it with water and erased. It is characterized in that it can be written by a writing instrument using a removable ink, and that an image reading sensor for reading the content written on the rewritable recording medium is provided. Further, such an electronic blackboard is characterized by being equipped with a storage unit. Moreover, in such an electronic blackboard,
It is characterized by having an interface unit.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The rewritable recording medium used in the present invention is, as shown in FIG.
A recording layer 22 is formed of a leuco dye and a group exhibiting color developability to a leuco dye by the action of heat, and a decolorizing agent and a binder which are compounds having a group exhibiting a color reducing property in the same molecule. A protective layer 23, such as a protective layer for improving durability, an ultraviolet protective layer, or a wear-resistant protective layer, is laminated on the surface as necessary. The support 2
1 is generally a synthetic resin film.

Generally, the leuco dye is thermally reacted with a phenolic compound to open the lactone ring of the leuco dye,
The color changes from colorless to colored. However, a colored compound in which the lactone ring is opened returns to a colorless compound having the original lactone ring when it is closed by contact with a basic substance. In this way, due to the reversibility of the color-developing agent and the leuco dye, the color-developing agent is a colorless leuco dye, which is a colorless leuco dye by opening the lactone ring to form a colored compound only by controlling thermal energy. The rewritable recording medium utilizes a property that it can be returned to a plurality of times repeatedly.

The rewritable recording medium having such a structure has a high temperature and a first heat energy of a short time, for example, 150.
When heat energy of 1 to 3 msec is applied at ˜180 ° C., the location is black (others are blue, red, etc.).
become. Next, low temperature, long second heat energy,
For example, when heat energy of 5 msec to 2 sec is applied at 130 to 150 ° C, the black color at that portion is erased.

First Embodiment Example FIG. 1 is an external view, FIG. 2 is a structural explanatory view, and FIG. 3 is a block diagram. In the figure, 1 is a writing unit, 2 is an operating unit, and 3 is a printer unit for recording the image written by the writing unit 1. The writing unit 1 will be described with reference to FIG. Reference numeral 4 is a rewritable recording medium, which can be wound on both sides by a shaft.

Reference numeral 5 denotes a transparent resin sheet which is arranged so as to overlap the front surface of the rewritable recording medium 4, and like the rewritable recording medium 4, both sides can be wound by a shaft. A recording head 6 records on the rewritable recording medium 4. Reference numeral 7 is an erasing head for erasing the recorded contents.

An image reading sensor 8 reads the contents written on the transparent resin sheet 5. The entire apparatus having the writing unit 1 having such a configuration will be described with reference to the block diagram of FIG. In the figure, the blocks other than the above members will be described. 9 is a CPU, 10 is a memory, and 11
Is a control unit, 12 is an A / D converter, and 13 is an actuator unit for winding the rewritable recording medium 4 and the transparent resin sheet 5.

According to this structure, the writing surface (page) located in the writing section 1 is filled with a writing instrument such as a water-based felt-tip pen. Therefore, the entry is made on the transparent resin sheet 5. By moving (rolling) the transparent resin sheet 5 thus filled in, the page image is read by the image reading sensor 8 and the image data is stored in the memory. The data stored in the memory can be arbitrarily printed by the printer unit 3, as shown in FIG.

When all the writing surface (pages) of the transparent resin sheet 5 is used up and all the writings on the writing surface are erased for the next use (state of FIG. 5), it is erased. When it is desired to make additional entries on all or some of the pages, the image data stored in the memory is recorded on the rewritable recording medium 4 by the recording head 6 and moved (coiled) to the writing unit 1. The contents are restored and displayed through the transparent resin sheet 5 (state of FIG. 6).

In the display thus restored and displayed in the writing unit 1, additional writing is performed from above the transparent resin sheet 5 with a writing instrument. Therefore, the rewritable recording medium 4 and the transparent resin sheet 5 are moved (wound) at the same time, and the image reading sensor 8 reads the display content in a state where the rewritable recording medium 4 and the transparent resin sheet 5 are superposed,
Save the page image in memory. This image data can be arbitrarily printed by the printer unit 3 (state of FIG. 7).

Recording on the rewritable recording medium 4 is erased by the erasing head 7 during rewinding (state of FIG. 8).
According to the above-described embodiment, since the rewritable recording medium 4 and the transparent resin sheet 5 are used by being overlapped on the writing surface, the page once erased is repeatedly added. You will be able to fill it out.

Second Embodiment Example FIG. 9 is an explanatory view of the configuration, which is a structure in which the transparent resin sheet in the first embodiment example is removed. Further, the writing instrument such as a felt pen used is an ink writing instrument that can be wiped off with a wiping tool such as a cloth by spraying water.

In the figure, reference numeral 4 is a rewritable recording medium, which can be wound by shafts on both sides. A recording head 6 records on the rewritable recording medium 4.
Reference numeral 7 is an erasing head for erasing the recorded contents. An image reading sensor 8 reads the contents written in the rewritable recording medium 4.

The other structure of the apparatus is the same as that of the first embodiment, and the description thereof is omitted. The operation will be described below. The desired content is written on the rewritable recording medium 4 on the writing surface with the writing instrument (state of FIG. 10). The content of the written writing surface is moved by winding the rewritable recording medium 4 to read a page image by the image reading sensor 8 and store the image data in the memory.

The data stored in the memory is recorded on the recording head 6
And is recorded on the rewritable recording medium 4. After recording, the writing on the writing instrument is sprayed with water and erased by the wiping tool (state of FIG. 11). Here, if it is desired to additionally describe the recorded content, the data stored in the memory is recorded on the rewritable recording medium 4 by the recording head 6 and then written by a writing instrument, and the written content of the writing surface is rewritable. By moving the recording medium 4 by winding, the page image is read by the image reading sensor 8 and the image data is stored in the memory.

The data stored in the memory is recorded on the recording head 6
To record on the rewritable recording medium 4 (state of FIG. 12). After the recording, the additionally written description by the writing tool is sprayed with water and erased by the wiping tool (state of FIG. 13).
At this time, only the portion additionally written by the writing tool is wiped off with water, and the content recorded on the rewritable recording medium 4 by the recording head 6 remains without being erased. The remaining recorded contents are erased by the erasing head 7 (state of FIG. 14).

According to the embodiment described above, by using the ink which can be wiped with water and erased by the wiping tool, the contents once erased can be restored without using the transparent resin sheet, and Can be additionally filled in, and can be realized with the same size as the conventional device. Third Embodiment Example FIG. 15 is a block diagram of an apparatus. In the apparatus of the first embodiment example, a removable disk (F
D, MO, ZIP, etc.), flash memory card (hereinafter referred to as removable disk) 14, and HDD 15
It is a structure that is equipped with a storage unit and a data exchange function.

Others are the same as above, and 9 is CP
U, 10 are memories, 11 is a control unit, 12 is an A / D converter, and 13 is an actuator unit for winding the rewritable recording medium 4 and the transparent resin sheet 5. With such a configuration, the image data read by the image reading sensor 8 that reads the content written on the transparent resin sheet 5 is temporarily stored in the memory 10 and saved in the removable disk 14 or the HDD 15.

The removable disk 14 and HDD
The image data stored in 15 is read into the memory 10 and recorded on the rewritable recording medium 4 by the recording head 6. Data can be exchanged between the removable disk 14 and the HDD 15. With the data conversion function,
Data edited by a personal computer (PC) or CAD is read from the removable disk 14, converted into a bitmap format compatible with this apparatus, and recorded on the rewritable recording medium 4. In addition, the image reading sensor 8 converts the captured image data into another image format (B
MP, JPEG, TIFF, etc.) and can be stored in the removable disk 14 or the HDD 15.

Although the above description has been made with the transparent resin sheet 5 shown in FIG. 15, it can be erased by spraying and wiping the water shown in the second embodiment. Even if ink is used, the same operation can be performed. According to the embodiment described above, by providing the storage unit such as the removable disk 14 and the HDD 15, it becomes easy to store the image data.

Further, since the HDD can store a large amount of data, it is possible to sequentially restore the page contents used in several meetings, and by using the removable disk, it is possible to use other locations. It is possible to restore page image data with this device installed at. In addition, the data conversion function allows a personal computer (P
Since data created by another device such as C) or CAD can be printed in detail on the large screen by the recording head 6, it is not necessary to copy materials such as a structural diagram and a circuit diagram for the number of people at the meeting. Furthermore, the minutes can be directly written, and printing and data storage are possible.

In this way, the storage unit is provided,
By providing the data conversion function, the page image data can be stored for a long period of time by an electronic medium, and it is not necessary to copy the material etc. created elsewhere, and paper is not required. It is also possible to use this device instead of OHP. Fourth Embodiment Example FIG. 16 is a block diagram of an apparatus.
This is a structure in which the F portion 16 is mounted.

Although not shown, this I / F unit can be added to the third embodiment as well. I / F section 16
Is a general PC I / F (serial: RS-232
C, RS-422A, USB, IEEE1394, etc., parallel: SCSI, Centro, GPIB, etc. ) And networks (LAN: FDDI, Token Ring, etc.)
Telephone line, ISDN line) connection and video input / output (N
TSC, etc.).

Others are the same as above, and 9 is CP
U, 10 are memories, 11 is a control unit, 12 is an A / D converter, and 13 is an actuator unit for winding the rewritable recording medium 4 and the transparent resin sheet 5. Note that the transparent resin sheet 5 may be omitted in the present embodiment as well, and an ink that can be erased by spraying with water may be used.

With such a configuration, data can be input from the outside through the I / F section 16, and the input data reads the contents of the rewritable recording medium 4 and the transparent resin sheet 5 and I Data can be output from the / F unit 16 to the outside. According to the embodiment described above, as shown in FIG. 17, by connecting a PC or the like via the I / F unit, materials for the meeting or the like are created in advance and printed on the apparatus, and the minutes or the like are recorded. In the added state, it becomes possible to take in as data or to a PC or the like.

Further, by printing an image from an image scanner or a digital camera, the contents can be confirmed on a large screen. Further, it can be printed by another printing device. Furthermore, the contents of the screen can be directly transmitted to the facsimile via the network. In addition, data can be exchanged with a remote PC, and minutes can be shared even in meetings at different locations.

[0031]

According to the present invention described in detail above, since the rewritable recording medium and the transparent resin sheet are superposed and can be conveyed independently of each other, additional description can be added to the contents once recorded on the rewritable recording medium. And has the effect. Further, even if there is no transparent resin sheet, by using an ink which can be erased by spraying with water, it is possible to additionally describe the content once recorded on the rewritable recording medium.

Further, by mounting the storage unit, it is possible to store a large amount of data over a long period of time, and it is possible to transfer data between the present apparatus at another location. Further, by providing an interface function, it is possible to perform data editing, data exchange, etc. by an external device, and to share information on a remote place in real time. Furthermore, a large screen display is possible, and there is an effect that it can be used as a facsimile or a printer.

[Brief description of drawings]

FIG. 1 is an external view showing a first embodiment example.

FIG. 2 is an explanatory diagram of the configuration.

FIG. 3 is a block diagram.

FIG. 4 is an explanatory diagram showing an operating state.

FIG. 5 is an explanatory diagram showing an operating state.

FIG. 6 is an explanatory diagram showing an operating state.

FIG. 7 is an explanatory diagram showing an operating state.

FIG. 8 is an explanatory diagram showing an operating state.

FIG. 9 is a structural explanatory view showing an example of a second embodiment.

FIG. 10 is an explanatory diagram showing an operating state.

FIG. 11 is an explanatory diagram showing an operating state.

FIG. 12 is an explanatory diagram showing an operating state.

FIG. 13 is an explanatory diagram showing an operating state.

FIG. 14 is an explanatory diagram showing an operating state.

FIG. 15 is a block diagram of an apparatus according to a third embodiment.

FIG. 16 is a block diagram of an apparatus according to a fourth embodiment.

FIG. 17 is an image diagram of a state in which the device is connected to another device.

FIG. 18 is an explanatory diagram of a rewritable recording medium.

[Explanation of symbols]

1 writing section 2 operation part 3 Printer section 4 Rewritable recording medium 5 Transparent resin sheet 6 recording head 7 erasing head 8 image reading sensor 9 CPU 10 memory 11 Control unit 12 A / D converter 13 Actuator part 14 removable disk 15 HDD 16 I / F section

Claims (4)

[Claims] 1. A recording head for recording on a rewritable recording medium, an erasing head for erasing the contents recorded by the recording head, an electronic blackboard having a CPU, a memory and a control unit, wherein the rewritable recording medium and the transparent resin sheet are superposed. An electronic blackboard that can be independently conveyed and is provided with an image reading sensor for reading the content written on the transparent resin sheet. 2. A recording head for recording on a rewritable recording medium, an erasing head for erasing the contents recorded by the recording head, an electronic blackboard having a CPU, a memory and a control unit, and the rewritable recording medium is wiped off with water. An electronic blackboard, which can be written by a writing instrument using ink that can be erased by the above, and which is provided with an image reading sensor for reading the content written on the rewritable recording medium. 3. An electronic blackboard according to claim 1 or 2, further comprising a storage unit. 4. The electronic blackboard according to claim 1 or 2, further comprising an interface unit.