JPH0321499A - electronic blackboard - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electronic blackboard with a copy function used in meetings, etc., and in particular to an intelligent board that is an electronic blackboard suitable for reading calligraphic manuscripts and displaying them on the board. Regarding.

[Conventional technology]

An electronic blackboard with a copy function has the function of copying a calligraphy image written with a felt-tip pen, etc. onto recording paper on a calligraphy screen of a size that is usually installed in a conference room, etc., and the calligraphy board is white. Because of this, it is especially called a whiteboard, and it is also called an electronic blackboard in the sense that it is a blackboard that reads and copies written images electronically. This type of device is compared to a blackboard that uses normal solid powder (chalk).
The same goes for writing on a large calligraphy board so that others can see it, but also copying the calligraphy and drawings written on the board as needed to keep track of the progress of the proceedings. The difference is that by distributing it to the participants of the meeting, there is no need for the participants themselves or their scribes to write on the board. In addition to writing directly on the calligraphy board with a felt pen, by reading manuscripts such as handwritten materials or general printed matter and writing on the board, you can not only write handwritten calligraphy but also write on the board of ordinary manuscripts. I was able to do it.

In order to read the calligraphy on the above board and the calligraphy on the normal manuscript in order to realize the points that are not found on the above-mentioned ordinary blackboard,
As described in Japanese Unexamined Patent Publication No. 61-47300, the conventional structure has been such that a reading section for reading calligraphy and drawings on a manuscript is simply added in addition to a reading section for reading drawings and drawings on a writing board.

This consists of a pair of left and right rolls wrapped around a whiteboard sheet having multiple writing surfaces, a drive mechanism for the rolls, a means for photoelectrically converting information such as characters and graphics written on the sheets, and a means for photoelectrically converting information such as characters and graphics written on the sheets. a means to print out the
Displaying the image written on the ordinary paper on the whiteboard, comprising means for photoelectrically converting the image written on the ordinary paper, and means for writing the photoelectrically converted image information on the whiteboard sheet. In other words, the photoelectric conversion section for the writing board and the photoelectric conversion section for the manuscript were provided separately.

Further, Japanese Patent Application Laid-open No. 180656/1983 discloses a technique in which a single CCD line image sensor (common photoelectric converter) is used as a photoelectric converter, as shown in FIG.

This allows characters, figures, etc. on a blackboard or a manuscript to be read using only one photoelectric converter.

[Problem to be solved by the invention]

The conventional technology described above uses two separate systems: a board reading optical system that photoelectrically converts and reads the calligraphy and drawings written on the board, and a document reading optical system that photoelectrically converts and reads the calligraphy and drawings written on a normal manuscript. Two optical systems were required to be installed.

The reason why two optical systems were provided was that the resolution of the photoelectric conversion element in the photoelectric conversion section had to be set to match each document image because the sizes of the calligraphy and images to be read differed. Resolution here refers to the fineness of the dimensions of pixels, which are the smallest units of photoelectric conversion elements that convert light into electricity, but quantitatively it refers to the number of lines that a written image is divided into per eye position length. This refers to the resolution that indicates whether photoelectric conversion can be performed.

With the above resolution settings, for example, when reading calligraphy and drawings on a board, the reading speed is 1.4 lines/rrta. A board with larger dimensions than the original surface can be read more roughly, such as 4.2 lines/mm of rough edges on the original. This is because the board is viewed from a distance, so drawing unnecessarily thin lines will only make it harder to see.

Another reason why two optical systems were provided was that in order to operate the whiteboard in front of the blackboard, even if it was added to the document reading section, it would not be possible to operate the whiteboard in front of the blackboard.
It was added with the idea of providing an operating section near the location that corresponds to the powder receiving section. In other words, since the reading section is provided at the end of the board, the document reading section is provided in front of the board. This idea was based on the idea of placing the control panel on the front and operating it in the same way as the control panel of ordinary copiers and image scanners (image readers). Providing two optical systems in this way means that the optical system itself becomes large and expensive, and the mechanical parts of these optical systems (for example, the image sensor array element, optical lens, light source lamp, etc.) The cost of the whiteboard itself was dominated by the precise adjustment of the whiteboard (holding mechanism, etc.), the time required, and the combination of these costs.

On the other hand, in the past, the functions of whiteboards were limited to the main body of the whiteboard, so the electrical signals of the calligraphy and drawings handled did not come out from the main body, and they were stand-alone types that could be used alone. For this reason, the whiteboards could not be used in conjunction with each other, and a single whiteboard made it difficult to see in meetings with a large number of people. Furthermore, even if multiple machines were used, the same calligraphy and drawings would be drawn, so writing on the board required time and effort. Furthermore, once the calligraphy image has been input, it can be freely placed on the writing board according to the wishes of the user, and the calligraphy image itself can be freely enlarged, reduced, rotated, reversed, etc.
The problem with this is that it was not possible to process the image (including reversing the negative image) to create a form different from the original image, and that it could only be used as a copy machine.

The main object of the present invention is to simplify the optical system by making adjustments to the optical system for reading an original and reading a board only once.

Another object of the present invention is to compactly configure the optical system for reading originals and reading the board, thereby reducing the size of the main unit.

Still another object of the present invention is to directly display prepared meeting materials on a board without transcribing them, and to make additions or corrections by hand.

Still another object of the present invention is to enable mutual transmission with other image communication devices.

Yet another object of the present invention is to perform processing such as enlarging or reducing a displayed image or a recorded image so that it can be easily viewed.

[Means to solve the problem]

In order to achieve the above object, according to the present invention, a single reading section is used as both a reading section for reading calligraphy and drawings on a board and a reading section for reading drawings on a manuscript.

In other words, the configuration is such that one calligraphy image reading unit reads the reflected light of the light irradiated onto the board or the original.

Also, the light reflected from the board. The reflected light from the original is focused on the light-receiving surface of one photoelectric conversion element.
Since a projection mechanism was used, the Fi writing board and the manuscript could be selected or read as the same calligraphy.6 Furthermore, the optical axis of the one optical system described above can be set to , depending on when reading the original,
Both of these can be read simultaneously.

Furthermore, in addition to the above, a communication section is provided which modulates and transmits the electrical signal of the calligraphy image, demodulates and receives the sent electrical signal, and reproduces the calligraphy image.

Furthermore, an editing section is provided which determines the arrangement of the numbered image on the drawing board based on the electric signal obtained by photoelectrically converting the calligraphy image, and processes the calligraphy image so as to change its shape.

[Effect]

The above intelligent board has one reading section,
Light is irradiated onto the manuscript and the writing board, and the reflected light is photoelectrically converted, and based on the electrical signal, it is recorded on a recording medium in the calligraphic recording section. In addition, the editorial department processes a document image corresponding to the electric signal based on the electric signal, and furthermore, the communication department communicates the electric signal with other intelligent boards and other communication targets. I decided to do so. Therefore, the optical system within the intelligent board body can be simplified, downsized, and lowered in price, making it easier to purchase multiple units, and furthermore, making it possible to tightly connect intelligent boards.

〔Example〕

Hereinafter, the electronic whiteboard according to the present invention will be described in detail using examples.

FIG. 1 is a perspective view showing the entire apparatus of the first embodiment of the present invention. 1 is a housing, 2 is a sheet-like writing board, 3 is a tray for holding a writing instrument such as a marker pen, 4 is an operation panel of this device, 5 is a document insertion slot, 6 is a recording section, and 7 is a recording paper 60 It is an outlet for

This device can be broadly classified into (i) a writing board, (ii) a reading optical section, (iii) a board writing section, and (iv) a recording section. Figure 2 shows the reading optical section (i) located inside the housing l in Figure 1.
i) is a configuration diagram. 8 and 9 are rollers that move the board 2 in the eight directions indicated by the arrows, 10 is a fluorescent lamp as a light source, 11 is a manuscript, 12 is a lens (convex lens) that collects the reflected light 16 from the board 2, and l3 is a manuscript Reflected light from 11 l7
A lens (convex lens) 14 is a CCD (Charge Coup) that reads reflected light 16 from the board 2 and reflected light 17 from the original 11 in a line shape.
15 is a reading line; 50 is a motor that rotates the roller 8;
1 and 52 are rollers that move the original 11. In FIG. 2, when reading an image displayed on the board 2, for example "HITACHI" (at this time, the original 11
(has been removed) illuminates the writing board 2 with a fluorescent lamp 10, and reads the reading line 15 on the illuminated writing board 2.
The reflected light 16 from the board is focused by a writing board lens 12,
An image is formed on the light receiving surface (dotted line) of the image sensor 14, and one line is photoelectrically converted. To read an entire page of the board 2, the motor 50 is driven to rotate the rollers 8 and 9 in the direction of the arrow, and the board 2 is moved in the direction of the arrow B to continuously perform the photoelectric conversion of one line as described above. Execute by repeating.

On the other hand, the image written on manuscript 11, for example "JAPAN"
When reading, the board lens 12 is switched to the document lens 13, the document 1l is moved by the roller 51 to the position shown in FIG. The reflected light 17 from the reading line 15 is focused by the document lens 13, and is imaged on the light receiving surface of the image sensor 14, whereupon one line is photoelectrically converted.

The entire page of the original 11 is read by driving the motor 50 to rotate the rollers 51 and 52, moving the original 1l in the direction of arrow A, and repeating the photoelectric conversion of one line as described above. Figure 3 is a combination of the configuration diagram of the reading optical system in Figure 2 seen from the direction ``■'' and the block configuration diagram of the circuit section of the device shown in Figure 1. 4 is an operation panel, 6 is a control unit 22
A recording section 21 records on the recording paper 60 according to an image signal output from the control section 22, a board writing section 22 displays on the board 2 according to an image signal output from the control section 22, A control unit that controls the overall operation; 36 is an A/D (analog/digital) conversion unit; 53 is a board lens 12 and a manuscript lens 13;
54 is a fluorescent lamp lighting unit that controls lighting of the fluorescent lamp 10; 55 is a motor drive unit that drives a motor that rotates the roller 8; 56 is a lens movement control unit that moves the document l1 or This is the optical axis of the reflected light from the reading line 15 of the board 2. In Figure 3,
You can perform the following three actions (1) to (3). (1)
When reading an image written on the original 11 and displaying it on the writing board 2, first, the original lens 13 is moved into the optical axis 56 by a signal from the operation panel 4. The document 11 is moved in the eight directions indicated by the arrows by the rollers 8 and 51, and stopped at the position where the leading edge of the YK document 11 is sandwiched between the rollers 8 and 52. Reflected light (optical axis 56) from the reading line 15 on the original 11 illuminated by the fluorescent lamp 10 is collected by the original lens 13, and converted into an image signal by the image sensor 14. The A/D converter 36 converts the signal into a digital image signal and then outputs it to the controller 22. # Gobe 22 is A/
The image signal output from the D converter 36 is transferred to the board writing section 2.
Output to 1. The board writing section 21 displays the image of the original 11 on the writing board 2 in accordance with the image signal output from the control section 22. (2) [When reading the image written on the manuscript 11 and recording it on the recording paper 60, similarly to (1), the manuscript lens 13 is moved into the optical axis 56 by a signal from the operation panel 4. Move it. Reflected light (optical axis 56) from the reading line 15 on the original 11 illuminated by the fluorescent lamp 10 is collected by the original lens 13, and converted into an image signal by the image sensor 14. The A/D converter 36 converts the signal into a digital image signal and then outputs it to the controller 22 . The control unit 22 is A/
The image signal outputted from the D conversion section 36 is outputted to the recording section 6. The recording unit 6 records the image of the original 11 on recording paper according to the image signal output from the control unit 22.

(3) When reading the image displayed on the board 2 and recording it on the recording paper 60 (in FIG. 3, when there is no document 11), a signal from the operation panel 4 is sent to the optical axis 56. The writing board lens 12 is moved to . Fluorescent lamp 10
The reflected light (optical axis 56) from the reading line 15 of the board 2 illuminated by the board is focused by the board lens l2, and converted into an image signal by the image sensor 14. A/
The D converter 36 converts the image signal into a digital image signal and then outputs it to the controller 22. The control section 22 outputs the image signal output from the A/D conversion section 36 to the recording section 6. Recording section 6
is the recording paper 6 according to the image signal output from the control section 22.
0, the image displayed on the board 2 is recorded.

In addition to the operation of selecting and outputting the image signal output from the A/D converter 36 to the board writing section 21 and the recording section 6 according to the signal from the operation panel 4, the control section 22 performs the following operations.
The above-mentioned (1) to (3) are performed by the signal from the operation panel 4.
In order to perform these operations, the lens movement control section 53, fluorescent lamp lighting section 54, motor drive section 55, etc. generate control signals, and when the original is tilted, the displayed image is corrected so that it is straight. It also performs actions. In addition, by incorporating an IC card reading and writing function (not shown), it is possible to display a message on the board 2 from the IC card, record it on the recording paper 60, and write the display image or original image on the board 2 to the IC card. You can also. According to the first embodiment of the present invention, a writing board 2 capable of writing with a writing instrument, a light source 10 for illuminating the writing board 2 and the original 11,
Lenses 12, 13, . A reading unit 20 comprising a photoelectric conversion unit that converts reflected light focused by a lens into an image signal.
Since we have provided a board writing section that displays a message on the board 2 according to the image signal output from the reading section 20 and a recording section 6 that records on the recording paper 60 according to the image signal output from the reading section 20, the following will be explained. Effects ■～■ can be obtained.

■ Adjustment of the optical system for reading original 11 and reading board 2 only needs to be done once, reducing manufacturing costs. ■ The optical systems for reading the original 11 and the board 2 are made more compact, making the device smaller.

■ In addition to the same functions as an electronic blackboard, the prepared meeting materials can be read by the electronic blackboard of the present invention and displayed on the board without having to be transcribed onto the board. Additions and corrections can be made by hand to images, allowing meeting attendees to concentrate on the discussion, making it possible to run the meeting more effectively.

Next, a second embodiment of the present invention will be explained with reference to FIG.
23 is a communication unit, and 24 is another image communication device. The communication unit 23 transmits the image signal output from the reading unit 20 to another image communication device 24 or sends the image signal output from the reading unit 20 to another image communication device 24.
It performs an operation of receiving an image signal transmitted from and outputting it to the control section 22.

In FIG. 4, operations (1) to (3) explained in FIG. 3 are executed in the same way, and the following four operations can be newly executed. (4) When reading the image written on the Jji manuscript 11 and transmitting it to another image communication device 24, first, by changing the lens 12 to the lens 13 according to the signal from the operation spring L; Switch the reading optical system 18 to the original 11 side. Reflected light 17 from the M document 11 is collected by a reading optical system 18 and converted into an image signal by a photoelectric converter 14.

The control unit 22 outputs the image signal output from the photoelectric conversion unit 14 to the communication unit 23, and the communication unit 23 transmits the image signal output from the control unit 22 to another image communication device 24.

(5) When reading an image written on the board 2 and transmitting it to another image communication device 24, the reading optical system 18 is activated by changing the lens 13 to the lens l2 according to a signal from the operation panel 4. Switch to the writing board 2 side. Optical system 1 reads reflected light 16 from board 2
The light is focused at 8 and converted into an image signal by a photoelectric conversion unit 14.

The control unit 22 outputs the image signal output from the photoelectric conversion unit 14 to the communication unit 23. The communication unit 23 transmits the image signal output from the control unit 22 to another image communication device l[24, and records it on the recording paper 61. (6) When displaying an image signal transmitted from another image communication device 24 on the board 2, the communication section 23 receives the image signal and outputs it to the control section 22. The control unit 22 transmits the image signal output from the communication unit 23 to the board writing unit 21.
Output to . The board writing section 2l displays an image on the writing board 2 according to the image signal output from the control section 22.
(7) When recording an image signal transmitted from another image communication device 124 on the recording paper 60, the communication section 23 receives the image signal and outputs it to the control section 22. The control section 22 outputs the image signal output from the communication section 23 to the recording section 6. The recording section 6 records an image on a recording paper 60 according to the image signal output from the control section 22. FIG. 5 is a perspective view showing the entire apparatus of the second embodiment of the present invention shown in FIG. be.

According to a second embodiment of the present invention, there is provided a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a lens that collects reflected light from the writing board and the original, and a light source that collects light reflected from the writing board and the original. A reading section consisting of a photoelectric conversion section that converts reflected light into an electrical signal, and a reading section that transmits the electrical signal output from the reading section to another image communication device, or receives an electrical signal sent from another image communication device. a communications department,
A board writing section that records on a board according to an electric signal output from the reading section or an electric signal received by the communication section; and a recording section that records on a recording medium according to the electric signal output from the reading section or the electric signal received at the communication section. In addition to the effects (1) to (2) obtained in the first embodiment of the present invention, the following effect (2) can be obtained.

■ Scan the original image and send it to another image communication device,
Reading a board image and transmitting it to another image communication device, displaying an image signal sent from another image communication device on the board, recording the image signal sent from another image communication device on recording paper This enables functions such as A third embodiment of the present invention will be described with reference to FIG.

25 is an editing section, and 22 is a control section. The N collection section 25 processes the image signal output from the reading section 20 and sends it to the control section 2.
Output to 2. In FIG. 6, the II collecting section 25 processes the image written on the original 1l output from the photoelectric conversion section 14 of the reading section 20 or the image displayed on the board 2, such as enlarging, reducing, or changing the layout. and outputs it to the control section 22.

FIG. 7 shows the processing functions of the editing section 25 shown in FIG. In Figure 7. 11-1.11-2.11-3.11
-4 and 11-5 are original manuscripts, and 2-1 and 2-2 are blackboards, respectively. The upper half of FIG. 7 shows an example in which four manuscripts 11-1. Sheets of manuscript 11-1.11-2.11-3.
Images A to D, respectively written in 11-4, are displayed on the board 2-1 in four parts as shown in the figure.

The lower half of FIG. 7 shows an example in which one manuscript 11-5 is read, processed by the editing section 25, and displayed on the board 2-2, and images A written above and below in the manuscript 11-5 are shown. and B are displayed on the board 2-2 divided into left and right sides as shown in the figure. FIG. 7 shows an example of the processing functions of the editing section 25, and in addition to the functions shown in the diagram, functions such as enlarging, reducing, rotating, and moving images can also be realized. Furthermore, editing of image information includes any changes to the image information before editing. In the above explanation, we have explained the case where the image written on the manuscript is processed in the editorial department and displayed on the board, but as is clear from the block diagram in Figure 6, the image written on the board is edited. It is also possible to process the data at the department and record it on recording paper.

FIG. 8 is a perspective view showing a third embodiment of the present invention shown in FIG. 6, in which the recording section 6 is further provided with an editing section 25 in the first embodiment of the present invention shown in FIG. It is something. According to this embodiment, there is provided a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a lens that collects reflected light from the writing board and the original, and an electric signal that converts the reflected light collected by the lens into an electric signal. an editing section that processes the electrical signals output from the reading section; and a board writing section that records on the board according to the electrical signals output from the MA collection section. In addition to the effects (1) to (2) obtained in the first embodiment of the present invention, the following effect (1) can be obtained because a recording unit that records on a recording medium according to the electric signal output from the m-collection unit is provided. is obtained. ■ The original image and board image can be read, processed, and printed out or written on the board.
Displayed images and recorded images are easier to see, making meetings more efficient. A fourth embodiment of the present invention will be explained with reference to FIG. FIG. 9 is a block diagram of a fourth embodiment of the present invention. 34
is a zoom lens, 35 is a zoom lens drive section, and 36 is an analog/digital (hereinafter referred to as A/D) conversion section. In FIG. 9, when reading an image written on the display board 2, the board 2 is irradiated with the fluorescent lamp 10, the reflected light 16 is collected by the zoom lens 34, and the light receiving surface of the image sensor 14 (the dotted line ). Note that since the signal from the operation panel 4 is input to the zoom lens drive section 35 in advance, the reduction magnification of the zoom lens 34 is set such that the height of the board 2 is imaged on the length of the light receiving surface of the image sensor 14. is set to

Image sensor 14 reads line 1 of board 2
After photoelectrically converting the image signal 5, the image signal output from the image sensor 14 is converted into a digital image signal by an A/D converter 36. On the other hand, when reading an image written on the original 11, the zoom lens drive section 35 adjusts the reduction magnification of the zoom lens 34 according to a signal from the operation panel 4 before starting reading. It is set so that the image is formed along the length of the light receiving surface. A document 11 is irradiated with a fluorescent lamp 10, and the reflected light 17 is collected by a zoom lens 34 and formed into an image on the light receiving surface of an image sensor 14. After the image sensor 14 photoelectrically converts the reading line 15 of the manuscript processor 1, the image signal output from the image sensor 15 is converted into a digital image signal by the A/D converter 36. The communication unit 23 transmits the image signal read as described above to another image communication device 24, or conversely receives an image signal transmitted from another image communication device 24 and displays it on the display board 2. Make preparations for recording on recording paper. According to the fourth embodiment of the present invention, there is provided a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a lens that collects reflected light from the writing board and the original, and a light source that collects light reflected by the lens. A reading section consisting of a photoelectric conversion section that converts reflected light into an electrical signal, and a reading section that transmits the electrical signal output from the reading section to another image communication device, or receives an electrical signal sent from another image communication device. a communication section for recording on a board according to an electric signal output from the reading section or an electric signal received by the communication section; and a board writing section for recording on a board according to an electric signal output from the reading section or an electric signal received by the communication section. A recording unit for recording on the medium is provided, and the optical axis of the reflected light from the board and the optical axis of the reflected light from the original are made the same, so that the effect obtained in the second embodiment of the present invention described above can be achieved. In addition to ~■, the following effect ■ can be obtained.

■ While both the board lens 12 and the document lens l3 are used, switching between them depending on the purpose, a zoom lens 34 whose reduction magnification can be continuously changed as desired is used instead. As a result, the lens movement control section 53 for switching between the writing board lens 12 and the document lens l3 shown in FIG. 3 becomes unnecessary, and the entire apparatus can be made compact. A fifth embodiment of the present invention will be explained with reference to FIG. 1st
FIG. 0 is a block diagram of a fifth embodiment of the present invention.

34 is a zoom lens, 35 is a zoom lens related part, 36
is an A/D conversion section. In the figure, when reading an image written on the board 2, a fluorescent lamp 10 is used to read the board 2.
The reflected light 16 is focused by the zoom lens 34 and formed into an image on the light receiving surface (dotted line) of the image sensor l4.

Note that since a signal from the operation panel 4 is inputted to the zoom lens drive section 35 in advance, the reduction magnification of the zoom lens 34 is set such that the height of the board 2 is imaged on the length of the light receiving surface of the image sensor 14. is set to Image sensor 14
After photoelectrically converting the reading line 15 of the board 2, the image signal output from the image sensor 15 is converted into a digital image signal by an A/D converter 36. On the other hand, when reading an image written on the document l1, the zoom lens driving section 35 adjusts the reduction magnification of the zoom lens 34 according to a signal from the operation panel 4 before starting reading. It is set so that the image is formed along the length of the light receiving surface. The document l1 is irradiated with the fluorescent lamp 10, and the reflected light 17 thereof is collected by the zoom lens 34 and formed into an image on the light receiving surface of the image sensor 14. After the image sensor 4 photoelectrically converts the reading line 15 of the document 1, the image signal output from the image sensor 15 is sent to the A/D converter 36.
is converted into a digital image signal.

The editing section 25 receives the image signal read as described above.
The processing shown in the figure is executed to prepare for display on the board 2 and recording on recording paper.

According to the fifth embodiment of the present invention, a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a zoom lens that collects reflected light from the writing board and the original;
A reading section consists of a photoelectric conversion section that converts reflected light focused by a zoom lens into an electrical signal, an editorial section that processes the electrical signals output from the reading section, and a board writing section according to the electrical signals output from the editorial section. A board writing section that records on the board and a recording section that records on a recording medium according to electrical signals output from the editing section are provided, and the optical axis of the reflected light from the board is made the same as the optical axis of the reflected light from the original. Therefore, the following effects ■ and ■ shown in Figures 6 and 9 respectively
is obtained.

■ The original image and the board image can be read, processed, and displayed on the board or printed out, making the displayed and recorded images easier to see and making the meeting more efficient.

■ While both the board lens 12 and the document lens 13 are used, switching between them depending on the purpose, a zoom lens 34 whose reduction magnification can be continuously changed as desired is used instead. As a result, the lens movement control section 53 for switching between the board lens 12 and the original document lens 13 shown in FIG. 3 becomes unnecessary, and the entire apparatus can be made compact.

A sixth embodiment of the present invention will be explained with reference to FIG. 1st
FIG. 1 is a block diagram of a sixth embodiment of the present invention.

37 and 38 are lenses for writing boards and manuscripts, respectively;
39 is a second fluorescent lamp, 4o is a fluorescent lamp lighting control unit, and 41 is a reading line for the original 11. In Figure 11,
When reading the image written on the board 2, first,
Before starting reading, the fluorescent lamp lighting control section 40 turns on the fluorescent lamp 10 that illuminates the board 2 and turns off the fluorescent lamp 39 that illuminates the original 11 in response to a signal from the operation panel 4. Next, the writing board 2 is irradiated with a fluorescent lamp 10,
The reflected light l6 is collected by the l-th lens 37 and formed into an image on the light-receiving surface (dotted line) of the image sensor 14. The reduction magnification of the first lens 37 is such that the height of the board 2 is imaged exactly on the length of the light receiving surface of the image sensor l4.

The image sensor 14 is connected to the reading line l of the board 2
After photoelectrically converting the image signal 5, the image signal output from the image sensor 14 is converted into a digital image signal by an A/D converter 36. On the other hand, when reading an image written on the original document 11, first, before starting reading, the fluorescent lamp lighting control section 40 turns off the first fluorescent lamp 10 that illuminates the board 2 in response to a signal from the operation panel 4. Then, the second fluorescent lamp 39 that illuminates the document 11 is turned on. Next, the document 11 is irradiated with the second fluorescent lamp 39 , and the reflected light 17 is collected by the second lens 38 and formed into an image on the light receiving surface of the image sensor 14 . The reduction magnification of the second lens 38 is such that the height of the original 11 is imaged exactly on the length of the light receiving surface of the image sensor 14.

After the image sensor 14 photoelectrically converts the reading line 41 of the original 11, the image signal output from the image sensor 14 is converted into a digital image signal by the A/D converter 36. The image signal read as described above is sent to the communication unit 23.
transmits it to another image communication device 24, or conversely receives an image signal transmitted from another image communication device @24 and prepares for displaying it on the board 2 or recording it on recording paper. ．． According to this embodiment, there is provided a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a lens that collects reflected light from the writing board and the original, and an electric signal that converts the reflected light collected by the lens into an electric signal. a reading unit configured with a photoelectric conversion unit that converts the image into an image; a communication unit that transmits an electrical signal output from the reading unit to another image communication device or receives an electrical signal transmitted from another image communication device; A board writing section that records on a board according to an electric signal output from the reading section or an electric signal received by the communication section; and a recording section that records on a recording medium according to the electric signal output from the reading section or the electric signal received at the communication section. Since the optical axis of the reflected light from the writing board and the optical axis of the reflected light from the manuscript are made different from each other, in addition to the effects (1) and (2) obtained in the second embodiment of the present invention, The following effects ① to [phase] are further obtained.

■ The document reading section can be placed anywhere on the intelligent board, improving operability.

■ The original scanned image can be sent to another image communication device while reading the board.

■ It is possible to send the board read image to another image communication device while reading the original.

[Phase] It is possible to optically combine the read image of the original and the read image of the board at the same time, and send the combined image to another image communication device. At this time, the first and second fluorescent lamps 10
．． 39 are lit at the same time.

A seventh embodiment of the present invention will be explained with reference to FIG. 1st
FIG. 2 is a block diagram of a seventh embodiment of the present invention.

37 and 38 are lenses for writing boards and manuscripts, respectively;
39 is a second fluorescent lamp, 4o is a fluorescent lamp lighting control unit, and 4↓ is a reading line for the original 11. In Figure 12,
When reading the image written on the board 2, first,
Before starting reading, the fluorescent lamp lighting control section 40 causes the fluorescent lamp 10 that illuminates the board 2 to illuminate, and turns off the fluorescent lamp 39 that illuminates the original 11, in response to a signal from the operation panel 4. Next, the writing board 2 is irradiated with a fluorescent lamp 10,
The reflected light 16 is focused by a lens 37 and formed into an image on the light receiving surface (dotted line) of the image sensor 14. The imaging magnification of the lens 37 is such that the height of the writing board 2 is imaged on the length of the light receiving surface of the image sensor 14. After the image sensor 14 photoelectrically converts the reading line 15 of the board 2, the image signal output from the image sensor l4 is A.
/D converter 36 converts the image signal into a digital image signal. On the other hand, when reading the image written on the manuscript 11, first,
Before starting reading, the fluorescent lamp lighting control section 40 turns off the fluorescent lamp 10 that illuminates the board 2 and turns on the fluorescent lamp 39 that illuminates the document 11 in response to a signal from the operation panel 4. Next, the document 11 is irradiated with a fluorescent lamp 39, the reflected light 17 is collected by a lens 38, and the image sensor 14 is
image on the light-receiving surface. The reduction magnification of lens 38 is lul
The height of l is imaged on the length of the light receiving surface of the image sensor l4. After the image sensor 14 photoelectrically converts the reading line 41 of the original 11, the image signal output from the image sensor 14 is converted into a digital image signal by the A/D converter 36. The editing section 25 executes the processing shown in FIG. 6 on the image signals read in the above manner to prepare for display on the board 2 and recording on recording paper. According to this embodiment, there is provided a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a lens that collects reflected light from the writing board and the original, and an electric signal that converts the reflected light collected by the lens into an electric signal. a reading section consisting of a photoelectric conversion section that converts into By providing a recording section that records on a recording medium according to the output electrical signal, and making the optical axis of the reflected light from the board different from the optical axis of the reflected light from the manuscript, the above effects In addition, the following effects [phases] can be obtained. [Phase] It is possible to optically combine the original read image and the board read image at the same time, and edit the combined image. FIG. 13 shows an eighth embodiment of the present invention.

This has the processing function shown in FIG. 12 and the image signal communication function with another image communication device shown in FIG. 11. According to this, board 2 or manuscript 11
The displayed image above can be enlarged or reduced to any size and sent to other image communication devices. Conversely, signals from other image communication devices can be displayed in an enlarged or reduced size. The same applies to Figures 9 and 10. 14th
The figure shows a ninth embodiment of the present invention. This shows that various methods can be applied as the recording method of the board writing section in the configuration of the intelligent board of the present invention.In the first embodiment of the present invention shown in FIG. As the recording method of 21, an electrophotographic method, an inkjet method, a pen plot method, a thermal method, etc. can be used. FIG. 13 shows an electrophotographic method as an example of a board writing method. 70 is a blade for scraping off the toner adhering to the display board 2; 71 is a charger; 72 is an optical signal having a different wavelength from the visible light modulated by the image signal; 73
74 is a developing device for applying toner, and 74 is a board display control section. The writing board 2 is a photoreceptor whose resistance value changes depending on the light 72. A latent image (invisible due to a charge image) is formed on the writing board 2 by the optical signal 72, and a developing device 73 attaches toner to develop the image ( make it visible).

In addition to the above-mentioned methods, electrophotographic methods include methods in which the board 2 is made of an insulating material, toner is attached to a separately provided photoreceptor, and the toner is transferred to the board 2, and a method in which the toner is conductive. It is also possible to use a method in which the toner is directly attached to the writing board 2, which is an insulating material, without using an optical signal as in the above two methods.

In the above embodiments, a marker pen was used as a writing instrument to create a writable display board, but any recording means that is visible or can be identified as information against the background color of the surface of the display board may be used. It is not limited to.

In a broader sense, when there is no calligraphy or painting, only the color of the background is displayed, but when a calligraphy or painting is written on the background surface, due to the difference in light intensity based on the reflected light of the light irradiated to the background surface, the color of the calligraphy or painting is displayed. Any board may be used as long as it can be visually identified as a difference in color from the background surface.

〔Effect of the invention〕

According to the present invention, there is provided a writing board capable of writing with a writing instrument, a light source that illuminates the writing board and the original, a lens that collects reflected light from the writing board and the original, and converts the reflected light collected by the lens into an electrical signal. Equipped with a reading section consisting of a photoelectric conversion section that performs conversion, and a recording section that records on a recording medium according to the electrical signal output from the reading section, the following effects can be achieved.
~ There is [phase].

■ The optical systems for reading originals and reading boards only need to be adjusted once, reducing manufacturing costs.6 ■ The optical systems for reading originals and reading boards are more compact.
The device becomes smaller.

■ In addition to the same functions as an electronic blackboard, it is possible to display the prepared meeting materials on the board by having them read by the electronic blackboard of the present invention without having to transfer them to the board, and the board display It is also possible to add or correct images by hand, allowing meeting attendees to concentrate on the discussion, making it possible to run the meeting more effectively.

When the intelligent end board with the above configuration is provided with a communication section that transmits electrical signals output from the reading section to other image communication devices or receives electrical signals sent from other image communication devices, the effect of ■ , In addition, by providing an editing section that processes the electrical signals output from the reading section, the effects of (2) can be obtained.

■ Scan the original image and send it to another image communication device,
Reading a board image and transmitting it to another image communication device, displaying an image signal sent from another image communication device on the board, recording the image signal sent from another image communication device on recording paper functions such as

■ The original image and the image displayed on the board can be read, processed, and displayed on the board or printed out, making the displayed image and recorded image easier to see and making the meeting more efficient.

Furthermore, by using a zoom lens in place of the writing board lens and document lens, ■ The reduction magnification of the lens can be changed continuously as desired, and the lens movement control can be used to switch between the writing board lens and the document lens. This eliminates the need for parts, making the entire device more compact.

Furthermore, by making the optical axis of the reflected light from the board different from the optical axis of the reflected light from the original, (1) the original reading section can be placed at any position on the intelligent board, improving operability.

■ The scanned original image can be sent to another image communication device while reading the board.

■ It is possible to send the board read image to another image communication device while reading the original.

(Kon) It is possible to optically synthesize the original read image and the board read image at the same time, and send the combined image to another image communication device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the first embodiment of the present invention, and FIG. 2 is a perspective view of the first embodiment of the present invention.
FIG. 3 is a block diagram of the reading optical system shown in FIG. 1, FIG. 4 is a block diagram of the second embodiment of the present invention, and FIG. 6 is a block diagram of the third embodiment of the present invention, FIG. 7 is a functional explanatory diagram of the editing section of FIG. 6, and FIG. 8 is a block diagram of the third embodiment of the present invention. 9 is a block diagram of the fourth embodiment of the present invention, FIG. 10 is a block diagram of the fifth embodiment of the present invention, and FIG. 11 is a block diagram of the sixth embodiment of the present invention. 12 is a block diagram of the seventh embodiment of the present invention, FIG. 13 is a block diagram of the eighth embodiment of the present invention, and FIG. 14 is a block diagram of the seventh embodiment of the present invention. FIG. 9 is a block configuration diagram of the embodiment No. 9; l... housing, 2... board, 3... saucer,
4...Operation panel, 5...Document insertion slot, 6...
Recording section, 7... Recording paper outlet, 10... Fluorescent lamp,
11... Original, l2... Lens, l3... Lens, l4... Photoelectric conversion unit, 20... Reading unit, 21
... Board writing department, 22... Control department, 23... Communication department, 25... Editorial department, 60... Figure A

Claims (1)

[Claims] 1. When a calligraphy is written on a background surface, the difference in color between the calligraphy and the background surface can be visually identified based on the difference in light amount based on the reflected light of the light irradiated to the background surface. A writing board; When inputting a calligraphy drawn on the writing board or a manuscript drawing on a different manuscript surface, the reflected light of the light irradiated on the original surface or the writing board is converted into one photoelectric conversion element. Accordingly, an input means for converting into an electric signal, and a size of a projected image that is projected by condensing the reflected light of the light irradiated on the document surface or the board onto the photoelectric conversion element, and converting the dimensions of the projected image onto the document surface of the document. a calligraphy image condensing and projecting means including a condensing means for the reflected light so that the image and the calligraphy image on the board are substantially the same; and recording the calligraphy image or manuscript image based on the input electric signal. An electronic blackboard comprising a recording means for recording on a body, and a board writing means for writing calligraphy or original drawings on the board based on the input electric signal. 2. A writing board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in the amount of light based on the reflected light of the light irradiated to the background surface; and the writing board; When inputting a calligraphic drawing drawn on a board or a manuscript drawing on a different manuscript surface, the reflected light irradiated on the manuscript surface or the writing board is converted into an electrical signal by one photoelectric conversion element. an input means for scanning the board or the manuscript surface and photoelectrically converting it line by line, the scanned line is substantially the same line on the manuscript surface and on the board; a calligraphy image condensing projection means for condensing and projecting reflected light from the board or the document surface onto the photoelectric conversion element; and recording the calligraphy or document image on a recording medium based on the input electric signal. and a board writing means for writing calligraphy or original drawings on the board based on the input electric signal. 3. The electronic whiteboard according to claim 1, wherein the light focusing means included in the writing image focusing and projecting means are two sets of optical lenses, one for the document surface and one for the writing board. 4. The electronic whiteboard according to claim 3, wherein the optical lens used as the condensing means included in the document image condensing and projecting means is a fixed focus type lens. 5. The electronic whiteboard according to claim 3, wherein the optical lens used as the condensing means included in the document image condensing and projecting means is a variable focus type lens. 6. A writing board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in the amount of light based on the reflected light of the light irradiated to the background surface; and the writing board; When inputting a calligraphic drawing drawn on a board or a manuscript drawing on a different manuscript surface, the reflected light irradiated on the manuscript surface or the writing board is converted into an electrical signal by one photoelectric conversion element. an input means for reading the original surface and a light path from when the light irradiated to the original surface or the board is reflected until it is projected onto the photoelectric conversion element when reading the original surface and when reading the board; calligraphy image condensing projection means for condensing and projecting a calligraphy image along substantially the same path; calligraphy recording means for recording the calligraphy or original image on a recording medium based on the input electric signal; An electronic blackboard comprising board writing means for writing calligraphy or original drawings on the board based on input electrical signals. 7. A writing board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in light amount based on the reflected light of the light irradiated on the background surface; When inputting a calligraphic drawing drawn on a board or a manuscript drawing on a different manuscript surface, the reflected light irradiated on the manuscript surface or the writing board is converted into an electrical signal by one photoelectric conversion element. an input means for recording the calligraphy or original drawing on a recording medium based on the input electric signal; and a board writing means for writing the calligraphy or original drawing on the board based on the input electric signal. means; a communication unit that encodes and modulates the input electrical signal and transmits it, or demodulates and decodes the sent electrical signal to reproduce an image; and for instructing or operating the operations of each of the means. An electronic whiteboard comprising: an operating section for inputting commands; and a board control section for controlling and controlling the operations of the respective means based on commands from the operating section. 8. A board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in light amount based on the reflected light of the light irradiated on the background surface; and the board; When inputting a calligraphic drawing drawn on a board or a manuscript drawing on a different manuscript surface, the reflected light irradiated on the manuscript surface or the writing board is converted into an electrical signal by one photoelectric conversion element. an input means for recording the calligraphy or original drawing on a recording medium based on the input electric signal; and a board writing means for writing the calligraphy or original drawing on the board based on the input electric signal. means; an editing unit that processes the input electric signal into an electric signal constituting a calligraphic image different from the original image before being converted into the electric signal; and instructs or operates the operation of each of the means. An electronic whiteboard comprising: an operation section for inputting commands for the operation; and a board control section for controlling and controlling the operations of the respective means based on commands from the operation section. 9. A board that, when a calligraphy is written on a background surface, allows the difference in color between the calligraphy and the background surface to be visually discerned based on the difference in light intensity based on the reflected light of the light irradiated to the background surface; When inputting a calligraphic drawing drawn on a board or a manuscript drawing on a different manuscript surface, the reflected light irradiated on the manuscript surface or the writing board is converted into an electrical signal by one photoelectric conversion element. an input means for reading the original surface and a light path from when the light irradiated to the original surface or the board is reflected until it is projected onto the photoelectric conversion element when reading the original surface and when reading the board; a recording means for recording the calligraphy or manuscript image on a recording medium based on the input electric signal; board writing means for writing calligraphy or original drawings on the board based on the input electrical signals; a communication section for reproducing images; an operation section for inputting commands for instructing or manipulating the operations of each of the means; and a board control for controlling and controlling the operations of each of the means based on instructions from the operation section. An electronic blackboard consisting of 10. A writing board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in the amount of light based on the reflected light of the light irradiated to the background surface; and the writing board. When inputting a calligraphy drawn on a board or a manuscript drawing on a manuscript surface with a different calligraphy written thereon, the reflected light of the light irradiated on the manuscript surface or the writing board is
an input means for converting the light into an electrical signal by one photoelectric conversion element; and a light path from when the light irradiated on the original surface or the writing board is reflected until it is projected on the photoelectric conversion element is the original surface. A calligraphy image condensing projection means for condensing and projecting a calligraphy image so as to pass through substantially the same path when reading the board and when reading the board; a recording means for recording on a recording medium; a board writing means for writing a calligraphy or original drawing on the board based on the input electrical signal; an editing section that processes electrical signals constituting a calligraphic image different from the calligraphic image; an operating section that inputs commands for instructing or operating the operations of each of the means; An electronic whiteboard consisting of a board control unit that centralizes and controls the operation of each means. 11. A writing board that, when a calligraphy is written on a background surface, allows the difference in color between the calligraphy and the background surface to be visually discerned based on the difference in the amount of light based on the reflected light of the light irradiated to the background surface; and the writing board. When inputting a calligraphic drawing drawn on a board or a manuscript drawing on a different manuscript surface, an input that converts the reflected light of the light irradiated onto the manuscript surface or the writing board into an electrical signal by a photoelectric conversion element. and a light path from when the light irradiated to the original surface or the writing board is reflected until it is projected onto the photoelectric conversion element is substantially different when reading the original surface and when reading the writing board. a recording means for recording the calligraphy or manuscript image on a recording medium based on the input electrical signal; Board writing means writes calligraphy or original drawings on the board based on a signal, and encodes and modulates the input electrical signal and transmits it, or demodulates and decodes the sent electrical signal to reproduce an image. It consists of a communication section, an operation section that inputs commands for instructing or operating the operations of each of the means, and a board control section that centralizes and controls the operations of each of the means based on the commands from the operation section. Electronic blackboard. 12. A writing board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in the amount of light based on the reflected light of the light irradiated on the background surface; and the writing board. When a calligraphy drawn on a board or a manuscript drawing on a manuscript surface with a different calligraphy written thereon is input, the reflected light of the light irradiated on the manuscript surface or the writing board is converted into an electrical signal by a photoelectric conversion element. an input means for converting the light onto the original surface or the board; a light path from when the light irradiated to the original surface or the board is reflected until it is projected onto the photoelectric conversion element is different when reading the original surface and when reading the board; a calligraphy image condensing projection unit that condenses and projects the calligraphy image along substantially different paths depending on the case; a recording unit that records the calligraphy or original image on a recording medium based on the input electric signal; board writing means for writing calligraphy or original drawings on the board based on the input electric signal; and forming a calligraphy image different from the calligraphy image before being converted into the electric signal based on the input electric signal. an editing section that processes the electrical signals into electrical signals; an operating section that inputs commands for instructing or manipulating the operations of the respective means; and an operating section that centralizes and controls the operations of the respective means based on commands from the operating section. An electronic blackboard consisting of a board control section. 13. A writing board that, when a calligraphy is written on a background surface, allows the difference in color between the calligraphy and the background surface to be visually discerned based on the difference in the amount of light based on the reflected light of the light irradiated to the background surface; and the writing board. When inputting a calligraphy drawn on a board or a manuscript drawing on a manuscript surface with a different calligraphy written thereon, the reflected light of the light irradiated on the manuscript surface or the writing board is
an input means for converting the light into an electrical signal by one photoelectric conversion element; and a light path from when the light irradiated on the original surface or the writing board is reflected until it is projected on the photoelectric conversion element is the original surface. a calligraphy image condensing projection means that condenses and projects a calligraphic image along substantially the same path when reading the board and when reading the board; a recording means for recording on a recording medium; a board writing means for writing a calligraphy or original drawing on the board based on the input electrical signal; an editing unit that processes the input electrical signal or the processed electrical signal into an electrical signal constituting a calligraphy image different from the calligraphic image; a communication unit that demodulates and decodes or further processes and reproduces an image; an operation unit that inputs commands for instructing or operating the operations of each of the above-mentioned means; An electronic whiteboard consisting of a board control section that supervises and controls the operation of the means. 14. A writing board that, when a calligraphy is written on a background surface, can visually distinguish the difference in color between the calligraphy and the background surface based on a difference in light amount based on the reflected light of the light irradiated on the background surface; When inputting a manuscript surface on which a calligraphy drawn on a board or a different calligraphy is written, the reflected light irradiated on the manuscript surface or the writing board is converted into an electrical signal by a photoelectric conversion element. an input means for converting the light onto the original surface or the board; a light path from when the light irradiated to the original surface or the board is reflected until it is projected onto the photoelectric conversion element is different when reading the original surface and when reading the board; a calligraphy image condensing projection unit that condenses and projects the calligraphy image along substantially different paths depending on the case; a recording unit that records the calligraphy or original image on a recording medium based on the input electric signal; board writing means for writing calligraphy or original drawings on the board based on the input electric signal; and forming a calligraphy image different from the calligraphy image before being converted into the electric signal based on the input electric signal. an editing section that processes the input electrical signal or the processed electrical signal into an electrical signal, encodes and modulates and transmits it, or demodulates and decodes the sent electrical signal, or further processes the electrical signal. a communication unit for playing back images, an operation unit for inputting commands for instructing or operating the operations of the respective means, and a board for supervising and controlling the operations of the respective means based on commands from the operation unit. An electronic blackboard consisting of a control section.