JPH0327829Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electronic blackboard for copying handwritten content written on a blackboard-type writing material in a reduced size onto a predetermined paper such as A4 size.

<Conventional technology> Conventionally, a sheet-like writing material is stretched between rolls on both the left and right sides to form a writing surface similar to a blackboard, and a back surface is provided behind the writing surface to provide resistance when writing, and the written content can be read. An image sensor that converts into electrical signals is installed on one side of the writing area, and when the sheet of writing material is rolled up, the image sensor reads the written content and converts it into an electrical signal, and this converted information is printed on a B4 size, Electronic blackboards have been put into practical use that allow reduced copies to be made on predetermined paper such as A4 size.

<Problems to be solved by the invention> In such electronic blackboards, the sheet-like writing material is either plain or has thin ruled lines, so it cannot be used to write schedules or graphs in a predetermined format for meetings, etc. When writing tables or tables, etc., each time you write the format, you must write numerical data, etc. in the blank spaces of the format, just as you would on a regular blackboard. is significantly hindering.

The present invention was developed in view of these conventional problems, and it is possible to display the required pattern on the writing surface of the writing material by simply selecting and instructing the desired pattern each time, and this pattern can also be displayed along with the written content. The technical object is to provide an electronic blackboard that can be used for copying, conveniently and efficiently.

<Problems to be Solved by the Invention> In the present invention, as a technical means for achieving the above-mentioned problems, an electronic blackboard is configured as follows.
That is, in an electronic blackboard on which a sheet-like writing material is stretched, the content written on the writing surface of the writing material is converted into an electric signal by an imaging sensor, and is copied onto a predetermined recording paper. The material is made of a translucent material, and a memory stores multiple types of patterns to be displayed on the sheet-like writing material, and a predetermined pattern selected and read from this memory is displayed on the sheet-like writing material. A display that is displayed on the back side of the writing surface, a synthesis circuit that synchronizes and synthesizes a pattern signal displayed on the display and a signal read by the sensor, and a copying device that copies information based on the synthesized signal of this synthesis circuit. It is characterized by having the following.

<Function> For example, when a desired pattern is specified by operating the keyboard, this pattern is read out from the memory and displayed on the display, and this display pattern can be seen through the writing surface of the translucent sheet-like writing material. It is only necessary to specify the required pattern each time by key operation, etc., and there is no need to write it down, which is convenient and allows meetings, etc. to proceed efficiently.

Furthermore, when copying written content, the pattern signal provided for display and the reading signal of the written content read by the imaging sensor are synchronized and synthesized by a synthesis circuit, so that the copying device can The combined information of the predetermined format and the content written in the blank space is copied onto the recording paper. Therefore, a result similar to that obtained by manually writing the format on the writing surface can be obtained.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an external perspective view of an embodiment of the present invention, in which a sheet-like writing material 5 is made of a transparent or translucent material, and is wound around left and right rolls 3, 3 so as to be freely windable. The paper is supplied from the right roll 3 and taken up by the left roll 3 to be transported in one direction. A flat display 2 is provided opposite to the back side of the writing surface 1 on which necessary information is written by hand in the sheet-like writing material 5, and the display 2 is displayed on the writing surface 1 on the opposite side through the translucent writing material 5. can be seen through.
As this flat display 2, a plasma display, a liquid crystal display board, and other known flat display devices can be used. One of these can be selected using the keyboard. The content displayed on the writing surface 1 is read by the image sensor 4 when the writing material 5 is wound up and converted into an electrical signal.

FIG. 2 is a block diagram showing the electrical circuit configuration of the embodiment. One of the plurality of patterns stored in the memory 6 is displayed on the display 2 according to a command from the control section 7. This control section 7 is
It is equipped with a clock generator and a keyboard to control the roll drive 8 for transporting the sheet writing material 5 and the printer 9. That is, by synchronizing the driving speed of the roll drive device 8, that is, the transporting speed of the writing material 5, and the readout timing of the pattern signal from the memory 6 using the clock signal of the clock generator, the synthesis circuit 10 synchronizes the reading timing of the pattern signal from the sensor 4. The reading signal of the written content on the writing surface 1 and the pattern signal from the memory 6 are synthesized into information obtained by combining the predetermined format before winding up the writing material 5 and the content written in the blank space. The signal is copied by a printer 9 driven in synchronization with the clock signal. Therefore, a result similar to that obtained by manually writing the format on the writing surface can be obtained.

FIG. 3 shows an external perspective view of another embodiment of the present invention, in which a projection type projector 11 is used in place of the flat display 2 of the previous embodiment, and a predetermined space is provided on the back side of the writing surface 1 of the writing material 5. This is to project and display the format pattern of the image, and to obtain the same effect as the previous embodiment. The electric circuit configuration of this embodiment is simply that the flat display 2 shown in FIG. 2 is replaced with a projection display 11.

FIG. 4 shows still another embodiment of the present invention, in which a transfer speed detection device 13 for detecting the winding transfer speed of the writing material 5 is provided, and the memory 6
The timing of reading out the pattern signal from the printer 9 and the printing speed of the printer 9 is synchronized.
This eliminates the need for a clock generator in memory 6.
Only the keyboard 7' is required for rewriting the pattern and instructing a predetermined pattern.

<Effects of the invention> As described above, according to the electronic blackboard of the invention, a desired format pattern can be displayed on the back side of the writing surface of the writing material simply by operating the keyboard, etc.
In addition, since it can be seen through the writing surface, it not only saves you the trouble of writing the pattern each time, but also allows you to copy the combined information of the pattern and the written content while manually writing in the blank space of the pattern.
It is extremely convenient to use and allows meetings, etc. to proceed extremely smoothly.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of one embodiment of the present invention;
The figure is a block diagram showing the electrical circuit configuration.
This figure is an external perspective view of another embodiment of the present invention, and FIG. 4 is a block diagram showing the electric circuit configuration of still another embodiment of the present invention. 1... Writing surface, 2, 11... Display, 4... Imaging sensor, 5... Sheet-like writing material, 6... Memory,
9...Printer (copying device), 10...Composition circuit.

Claims (1)

[Scope of utility model registration request] In an electronic blackboard on which a sheet of writing material is stretched, the content written on the writing surface of the writing material is converted into an electrical signal by an imaging sensor and copied onto a predetermined recording paper. A memory that is made of a translucent material and stores multiple types of patterns to be displayed on the sheet-like writing material, and a predetermined pattern selected and read from this memory is displayed on the writing surface of the sheet-like writing material. A display is displayed on the back of the display, a synthesis circuit that synchronizes and synthesizes the pattern signal displayed on the display and a signal read by the sensor, and a copying device that copies information based on the synthesized signal of the synthesis circuit. An electronic blackboard characterized by: