JPS6168627A - Erasure protection system of electronic blackboard system - Google Patents

Abstract

PURPOSE:To increase the easiness to use an electronic blackboard and improve conference efficiency by providing an indicating means for erasure protection and a memory, and copying the contents of a memory for display in said memory and protecting them. CONSTITUTION:The system which uses the electronic blackboard consists of a white board 1 having a digitizer, a felt pen 3a for drawing, an eraser 3b for erasure, a display device 2, a picture element memory 4 stored with its display contents, a printer 5, a storage unit 7, its protection key 9a, and a picture element memory 10 for erasure protection. In this case, a console panel 9 is provided with an erasure protection key 9a and a picture element memory 10 for erasure protection, in which the contents of said memory 4 are copied by said control part 8. Then, an OR part 11 ORs outputs of said memories 4 and 10 and outputs the result to the display device 2, etc. Consequently, a necessary part drawn on the electronic blackboard is protected from erasure operation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electronic blackboard in which the written content is converted into an electrical signal by writing on the board with a writing instrument such as a felt pen, and the writing on the board is written using an eraser. The present invention relates to an erasure protection method for protecting a necessary written portion even if the portion is erased.

With the recent progress in office automation (OA), various OA devices have been developed. Among these, electronic conference systems utilize electronic blackboards to improve the efficiency of meetings. In the electronic conference system, for example, in a remote point-to-point conference, as shown in FIG.
, 2b are provided, and these are connected by a communication line CL. The electronic blackboards 1α and 1b have a coordinate detection function on the whiteboard, so that the user can write the necessary information on the whiteboard with a writing instrument such as a felt-tip pen and show it to the attendees. It is detected by detection, converted into an electrical signal, and transmitted to and displayed on its own display and the displays in other conference rooms. Therefore, the contents written on the electronic blackboards 1cL and IA will be displayed in an overlapping manner on the displays 2α and 2A in each conference room, and attendees in each conference room will be able to understand the contents written by the other party by looking at the display. can.

In this way, electronic blackboards use graphics in addition to letters and symbols in the same way as in regular blackboard meetings, thereby conveying the content to the other party and improving the efficiency of the meeting.

[Conventional technology]

A system using such an electronic blackboard has conventionally been configured as shown in FIG. That is, a whiteboard 1 having a digitizer (coordinate detection unit), a felt-tip pen 3α for writing on the whiteboard 1, and a whiteboard 1.
An eraser 3A for erasing the above written items, a display 2, a pixel memory 4 for storing the contents displayed on the display 2, a printer 5 for printing out the displayed contents on the display 21ζ, and a communication line with the other station. A modem (modulator/demodulator) 6 for exchanging information, a storage unit (floppy disk) 7 for storing the contents written on the whiteboard 1 and information from the other station, and a coordinate system from the whiteboard 1. A control section 8 writes the written contents into the pixel memory 4 and the storage unit 7 according to the input, and further transmits the written contents to the partner station via the modem 6, and sends control information such as page changes, print instructions, playback page designation, etc. to the control section 8. and an operation panel 9 that is operated by an operator to provide information.

In such an electronic blackboard system, writing/'l'F! on whiteboard 1 is possible. ! A write/erase mode for processing information from the other station, a reception mode for processing information from the other station, and a reproduction mode for reproducing the contents stored in the storage unit 7 can be executed.

In the write/erase mode shown in FIG. 8, pressing a switch (not shown) on the felt pen 3α sets the mode to write, and pressing a switch (not shown) on the eraser 3b sets the mode to erase. When the operator writes on the whiteboard 1 with the felt pen 3a or erases with the eraser 3b, the control unit 8 obtains coordinate data generated from the digitizer, creates writing information or erasing information, and first writes it into the storage unit. 7 to write the write information or erase the stored storage contents according to the erase information, and if there is a page change instruction from the operation panel 9, the page change information is recorded in the storage unit 7. At the same time, write information is written to the pixel memory 4 or the stored contents are erased according to the erase information to change the stored contents and display them on the display 2. When the control unit 8 receives a print instruction from the operation panel 9, it causes the printer 5 to output the contents of the pixel memory 4. Further, the control unit 8 transmits the write information or erase information to the other station via the modem 6.

On the other hand, in the reception mode, when writing information or erasing information is received from the partner station as shown in FIG. Furthermore, if there is a page change instruction from the partner station, page change information is recorded in the storage unit 7. At the same time, writing information to the pixel memory 4 or erasing the stored memory contents according to the erasing information,
The stored contents are changed and displayed on the display 2. In the playback mode, when a playback page is specified from the operation panel 9 as shown in the GLO diagram, the storage contents of the specified page are sequentially read out from the storage unit 7 to the control unit 8, and this playback information is transferred to the pixel memory 4. expand,
Display on display 2. When playback ends, the program returns to write/erase mode.

In this way, the contents input from one's own electronic blackboard and the contents from the other station are displayed on one's own display and shown to the attendees.

[Problems to be solved by the invention] In such a conventional electronic whiteboard system, the 11th
As shown in FIG. 4, as necessary items are written on the whiteboard 1 with the felt-tip pen 3α, the contents are displayed on the display 2. At this time, if you want to erase and change xxx'' of project B in the work schedule written on the whiteboard 1 as shown in Figure 411 (B), for example, erase the corresponding part on the whiteboard 1 with the eraser 36. However, if you erase "XXX", the line table part below or near it will also be erased, and on the display 2, in addition to the corresponding characters °×××'', all or part of the line table will also be erased. Ru. In general, discussions are often carried out using tables, graphs, figures, etc., and the tables, graphs, figures, etc. are usually drawn first.
Since we are adding text as we proceed with the proceedings, we have taken the pains to write tables and graphs by erasing text.

If the figures were also erased, there was a problem in that the tables, graphs, and figures had to be rewritten again, placing a heavy burden on the writer.

[Problem that the invention seeks to solve]

SUMMARY OF THE INVENTION The present invention provides an erasure protection method for an electronic blackboard system that protects the stored contents from being erased even if a necessary portion of the whiteboard is erased with an eraser.

For this reason, the present invention provides an electronic blackboard on which content is written or erased with a writing instrument and converts the content into a single signal, and a display memory that stores the content for display using electrical signals from the electronic blackboard. , a display for displaying the contents of the electronic whiteboard, an operation panel for issuing erasure protection instructions, an erasure protection memory to which the contents of the display memory are copied, and an electronic blackboard for writing using electrical signals from the electronic whiteboard. or a control unit that expands the erased contents to the display memory, and the control unit receives an erase protection instruction from the operation panel and copies the contents of the display memory to the erase protect memory and displays the display. The present invention is characterized in that the contents of both the display memory and the erasure protection memory are displayed.

[For production]

In the present invention, an erasure protection instruction means and an erasure protection memory are provided, and when an erasure protection instruction is given, the contents of the display memory for storing input information on the electronic whiteboard are copied to the erasure protection memory, and the contents are copied to the erasure protection memory for subsequent electronic information. In addition to protecting against erase input from the blackboard, the logical OR of the contents of both the display memory and the erase protection memory is displayed on the display, allowing attendees to write/erase from the electronic blackboard while retaining the protected contents. The contents of the page are displayed.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to Examples.

FIG. 1 is a block diagram of an embodiment of the present invention. In the figure, the same parts as those shown in FIG.
10 is a pixel memory for erasure protection, and the contents of the display pixel memory 4 are copied under the control of the control section 8 when erasure protection is instructed. 11 is an OR section. The logical sum of the contents of the display pixel memory 4 and the erase protection pixel memory 10 is output to the display 2 and printer 5.

Next, regarding the operation of the embodiment configuration in FIG. 1, we will explain the write/erase mode processing flow diagram in FIG.
Description will be made based on the reception mode processing flowchart shown in FIG. 5 and the playback mode processing flowchart shown in FIG.

First, the write/erase mode will be explained using FIGS. 2 and 3.

(2) When the operator writes on the whiteboard 1 using the felt pen 3α or erases using the eraser 3b, the writing coordinates or erasing coordinates are provided from the whiteboard 1 to the control unit 8.

■ The control unit 8 thereby writes or erases the information ′
Create information and first send it to the storage unit 7 to write the write information or erase the stored memory contents according to the erase information, and further record the page change information in the memory unit 7 if there is a page change instruction from the operation panel 9. Then return to step ■.

At the same time, the control unit 8 writes the write information to the display pixel memory 4 or erases the stored memory content according to the erase information, changes the memory content, and erases the content of the display pixel memory 4 and erase protection. The logical sum of the contents of the pixel memory 10 is sent from the logical sum section 11 to the display 2, and the contents of the logical sum are displayed. Further, upon receiving a print instruction from the operation panel 9, the control section 8 causes the printer 5 to output the contents of the logical sum of the pixel memory 4 and the erasure protection pixel memo IJ 10.

(2) Next, the control unit 8 checks whether there is a page change or screen clear instruction from the operation panel 9, and if so, clears the display pixel memory 4 and the erase protection pixel memory 10, and returns to step (2).

■ If there is no page change or screen clear instruction, next check whether the erase protect key (button) 9α has been pressed from the operation panel 9, and if it has been pressed, write the erase protect information to the storage unit 7 and write the erase protect information to the corresponding page. In addition to protecting the stored contents of the display pixel memory 4,
Copy the contents to the erase protection pixel memory 10,
Furthermore, the erasure protection information is transmitted to the other station via the modem 6, and the process returns to step (2). Conversely, if the erase protect key 9a is not pressed, the process immediately returns to step (2).

■ Along with step ■, the control unit 8 Information or deletion, front information transmitted to the other station via modem 6, Δ do.

FIG. 3 is an explanatory diagram of such an operation, and shows the relationship between the written content on the electronic blackboard (whiteboard) 1, the stored content in the display pixel memory 4, and the displayed content on the display 2. As shown in FIG. 3 (4), the operator draws a line table (figures or graphs may be used) on the whiteboard 1 using a felt-tip pen 3.
When described by α, this content is also stored in the display pixel memory 4, and the display 2 displays the content of the display pixel memory 4. Here, the operator presses the erase protect key 9α on the control panel 9 to erase the display pixel memory 4.
Copy the contents to pixel memory 0 for erasure protection. Next, while proceeding with the discussion, as the necessary characters are written on the whiteboard 1 with the felt-tip pen 3α as shown in FIG. 3(B), the contents of the display pixel memory 4 are changed accordingly as shown in the figure. On the display 2 is a logical sum of the contents of the display pixel memory 4 and the erase protection memory 10.

That is, the contents of the display pixel memory 4 are displayed. Furthermore, when it is desired to change the characters written on the whiteboard 1, for example, "°XXX", the eraser 3b is used to erase the "°XXX" portion. Along with this, a part of the line table below it is also erased as shown in FIG. 3(C), and the contents of the display pixel memory 4 are erased as shown in the figure (" At this time, the display 2 has a display pixel memory 4.
Since the logical OR of the pixel memo IJ 10 for erasure protection and the pixel memo IJ 10 for erasure protection is displayed, a part of the line table missing in the pixel memory 4 for display is replaced by the contents of the pixel memory 10 for erasure protection (i.e., FIG. 3 (A) )).

Then, when the operator writes only "YYY" using the felt tip pen 3αζ instead of "×x×#" on the whiteboard 1 (that is, without writing part of the missing line table),
The display pixel memory 4 has "YYY" as shown in Figure 3 (b).
'' is added and the missing line table is not compensated for, or the line table is displayed on the display 2 with the line table supplemented by the pixel memory 10 for erasure protection.

The same content displayed on the display 2 is stored in the storage unit 7 and the storage unit of the partner station. next,
The reception mode will be explained with reference to FIG.

■ When the control unit 8 receives the write/erase information from the other station via the modem 6, it first sends it to the storage unit 7 to write the write information or erase the stored memory contents according to the erase information, and then sends the information from the other station to the storage unit 7. If there is a page change instruction, page change information is recorded in the storage unit 7 and the process returns to the write/erase mode.

At the same time, the control unit 8 writes write information to the display pixel memory 4 or erases the stored memory content according to the erase information, changes the memory content, and erases the content of the display pixel memory 4 and the erase protection pixel. The logical sum of the contents with the memo IJ 10 is sent from the logical sum section 11 to the display 2, and the contents of the logical sum are displayed.

■ Next, the control unit 8 checks whether there is a page change or screen clear instruction from the operation panel 9, and if there is, clears the display pixel memory 4 and the erase protection pixel memory 10, and enters the write/erase mode. Return to

■ If there is no page change or screen clear instruction, check whether erasure protection information has been received from the other station, and if so, write the erasure protection information to the storage unit 7 and protect the already stored contents of the page. The contents of the display pixel memory 4 are copied to the erase protection pixel memory 1o, and the program returns to the write/erase mode.If the erase protect information has not been received, the program immediately returns to the write/erase mode. In this way, the other station also performs the same operation as shown in FIG.

Furthermore, the reproduction mode will be explained using FIG. 5.

(2) When the control section 8 receives a reproduction instruction and a reproduction page designation from the operation panel 9, it first clears the display pixel memory 4 and the erasure protection pixel memo IJ 10.

Next, the control section 8 sequentially reads out the stored contents of the specified page from the storage unit 7 to the control section 8 and develops this reproduction information into the pixel memory 4.

(2) The control section 8 detects whether erasure protection information is included in the reproduced information read from the storage unit 7, and if detected, copies the contents of the display pixel memory 4 to the erasure protection pixel memory 1o.

■ The control unit 8 calculates the logical sum of the display pixel memory 4 and the erase protection pixel memory IJ 10 using the logical sum unit 11,
Display on display 2.

(2) The control section 8 continues this operation until the reproduction of the designated page is completed, and then returns to the write/erase mode.

In this way, the protected content is protected by the memo IJ 10 even in playback mode.

In the above description, the electronic whiteboard system has been described as an example of a remote point-to-point conference, but the system is not limited to this, and may be used for individual conferences in which transmission to the other party is not performed. Also, without providing the logical sum section 11, the control section 8 inputs both notes IJ4, 1
It is also possible to take the logical sum of 0 and output it to the display 2.

Although the present invention has been described above using one embodiment, the present invention can be modified in various ways in accordance with the gist of the present invention, and these are not excluded from the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, there is an electronic blackboard on which content is written or erased using a writing instrument and which converts the content into an electrical signal, and an electronic blackboard that stores the content for display using the electrical signal from the electronic whiteboard. A display memory, a display for displaying the contents of the electronic blackboard, an operation panel for issuing an erase protection instruction, an erase protection memory to which the contents of the display memory are copied, and a display for displaying the contents of the electronic blackboard. and a control unit that develops written or erased contents in the display memory using electrical signals, and the control unit receives an erase protection instruction from the operation panel and copies the contents of the display memory to the erase protection memory. In addition, since the display is characterized by displaying the contents of both the display memory and the erase protection memory, the necessary written portions written on the electronic blackboard can be protected, so that subsequent information on the electronic blackboard can be protected. This has the effect of being able to protect against erasing operations, thereby increasing the ease of use of the electronic whiteboard. In addition, since protected content is displayed on the display, the missing parts are filled in and displayed, making it possible to provide a screen that is easy for attendees to understand, making it possible to use electronic blackboards. Contributes to improving meeting efficiency.

Furthermore, since this can be achieved by a relatively simple method of copying to the protection memory, it has the advantageous practical effect of being easily and inexpensively realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a flowchart of write/erase mode processing in the embodiment configuration of FIG. 1, FIG. 3 is an explanatory diagram of the operation in FIG. 2, and FIG. 1, FIG. 5 is a playback mode processing flow diagram in FIG. 1, FIG. 6 is an explanatory diagram of an electronic conference system, FIG. 7 is a configuration diagram of a conventional electronic whiteboard system, and FIG. 7 is a write/erase mode processing flowchart according to the conventional configuration, FIG. 9 is a reception mode processing flowchart according to the conventional configuration, FIG. 7 is a reproduction mode processing flowchart according to the conventional configuration, and FIG. The figure is an explanatory diagram of problems in the conventional configuration. In the diagram, 1... whiteboard (electronic blackboard), 2...
Display, 3α...Feltben, 3b...Izzyza, 4...Display memory, 8...Control unit, 9.
...Operation panel, 9α...Erase protect key, 10
...Memory for erasure protection.

Claims (1)

[Claims] An electronic blackboard on which content is written or erased using a writing instrument and which converts the content into an electrical signal; a display memory that stores the content for display in accordance with the electrical signal from the electronic blackboard; and the electronic blackboard. an operation panel for issuing erasure protection instructions; an erasure protection memory to which the contents of the display memory are copied; and a control unit that expands the contents to the display memory, and the control unit receives an erase protection instruction from the operation panel, copies the contents of the display memory to the erase protect memory, and writes the contents to the display. An erasure protection method for an electronic whiteboard system characterized by displaying the contents of both a display memory and an erasure protection memory.