JP2016030369A - Electronic blackboard device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic blackboard device capable of confirming a writing content on a writing face in a real time and reading the writing face content optically to create image data.SOLUTION: An electronic blackboard device comprises: a writing face enabled to write by a writing instrument; reading means for reading the information of the writing face to create image data; printing means for printing an image on a printing medium by using the image data; an imaging part for imaging the information of the writing face; and an output port part for outputting the image data imaged by the imaging part.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an electronic blackboard device.

  Electronic blackboards with a writing surface are known, and conferences are often held while writing letters or the like on the writing surface. In a meeting, it is good to use it at a venue where the written content can be easily seen, but it is difficult to confirm the written content in real time if the conference location is wide and the written content cannot be easily seen. For this reason, a system is also known in which the writing surface is imaged by a camera and the video data is transmitted so that the written content can be confirmed in real time. Although it is possible to confirm in real time by transmitting video data captured by the camera, in order to store the information written on the writing surface at hand, it is necessary to process and store the video data.

JP 2009-130922 A

  The present invention provides an electronic blackboard device capable of confirming writing contents on a writing surface in real time and creating image data by optically reading the writing surface contents.

  The electronic blackboard device includes a writing surface that can be described by a writing instrument, a reading unit that reads information on the writing surface to create image data, a printing unit that prints an image on a printing medium using the image data, and writing surface information And an output port unit that outputs video data captured by the imaging unit.

1 is an external perspective view of an electronic blackboard device 1 according to a first embodiment. It is an expansion perspective view of the corner | angular part of the electronic blackboard apparatus in 1st Embodiment. It is a top view which shows the internal structure of the electronic blackboard apparatus in 1st Embodiment. It is a front view which shows the internal structure of the electronic blackboard apparatus in 1st Embodiment. It is a block diagram which shows the control circuit of the electronic blackboard apparatus in 1st Embodiment. 1 is a connection example of an electronic blackboard device and a projector in a first embodiment.

  Hereinafter, an electronic blackboard device according to an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 1 is an external perspective view of an electronic blackboard device 1 according to this embodiment. The electronic blackboard device 1 supports a rectangular frame 3 by a pair of legs 2a and 2b. The frame 3 stores an annular sheet 4. A portion of the sheet 4 exposed to the outside from the opening on the front side of the frame 3 becomes a writing surface 4a on which characters and the like are written by a writing tool such as a marker pen. A printer 5 for printing an image read by the CCD line sensor 15 (see FIG. 3) on a print medium is provided below the frame 3 on the leg 2b side. In addition, although it is this printer 5, recording systems, such as an inkjet printer and a thermal printer, are not ask | required.

  A shelf 6 for holding a cleaner (not shown) used when erasing characters written with a marker pen or the like is provided at the lower edge of the frame 3. Further, an operation panel 7 having various operation keys for operating the electronic blackboard device 1 is provided at the edge of the frame 3 on the side of the leg 2b.

  A camera 50 for imaging the writing surface 4 a is provided at the center of the upper edge of the frame 3 via a camera stand 51.

  As shown in FIG. 2, a protruding portion 3 a that protrudes toward the front side is formed at the lower corner portion of the frame 3 on the stand 2 b side. The protruding portion 3 a is provided with a power switch 8 for turning on / off the power supply to the electronic blackboard device 1 and a USB port 9 to which the USB connector 41 of the USB memory 40 can be attached and detached. In addition to the USB memory, an external storage device such as an SD card drive or a hard disk drive having a USB connector can be connected to the USB port 9.

The operation panel 7 includes an LED display unit, a sheet feed button, a print button, a USB write button, and the like. The LED display unit notifies the presence / absence of power supply, out of paper, and the like by turning on the LED. For example, an instruction to feed the sheet 4 from the stand 2b side to the stand 2a side in FIG. 1 is given, or an instruction to print characters drawn on the writing surface 4a is given. The USB write button gives an instruction to output characters drawn on the writing surface 4a as electronic data from the USB port 9 to the outside.
FIG. 3 is a plan view schematically showing the internal structure of the electronic blackboard device 1, and FIG. 4 is a front view schematically showing the internal structure of the electronic blackboard device 1.
A pair of rollers 10 a and 10 b that rotate and convey the sheet 4 are provided at both left and right ends in the frame 3. The rollers 10a and 10b have an axis substantially parallel to the left and right edges of the frame 3, and an annular sheet 4 is stretched between the rollers 10a and 10b. A sheet feed (SF) motor 25 (see FIG. 5) is connected to one of the rollers 10a and 10b via a belt transmission mechanism (not shown). When the SF motor 25 is driven, the rollers 10a and 10b are rotated via the belt transmission mechanism, and the sheet 4 is rotated and conveyed in the left-right direction.

  In addition, a writing board 11 is provided immediately behind the writing surface 4a of the sheet 4 in order to ensure good writing properties for the writing surface 4a.

  On the opposite side of the writing surface 4a with the writing board 11 in between, a light source 12 and a mirror 13, a lens 14, and a CCD line sensor 15 that are long in a direction substantially perpendicular to the conveying direction of the sheet 4 are provided. ing. When reading characters or the like drawn on the sheet 4, the light source 12 irradiates the sheet 4 with visible light, and the reflected light from the sheet 4 is sent to the lens 14 via the mirror 13 and received by the CCD line sensor 15. Focused on the surface. At this time, an electrical signal for one line along the longitudinal direction of the mirror 13 is output from the CCD line sensor 15 in accordance with the visible light received by the light receiving surface.

  The light source 12, the mirror 13, the lens 14, the CCD line sensor 15, and an image processing unit 24 described later constitute a reading unit that reads information on the sheet 4 and generates image data.

Next, a control circuit of the electronic blackboard device 1 will be described.
FIG. 5 is a block diagram showing a control circuit of the electronic blackboard device 1. The control circuit includes a CPU 20, a ROM (Read Only Memory) 21, a RAM (Random Access Memory) 22, a lighting circuit 23, an image processing unit 24, an SF motor 25, a power supply unit 26, a printer 5, an operation panel 7, and a power switch 8. , A USB port 9, a light source 12, a CCD line sensor 15, a camera 50, a camera image processing unit 52, an image output port 53, and the like.

  The ROM 21 stores fixed data such as an operation program of the electronic blackboard device 1 and various default setting values. The RAM 22 forms various working storage areas according to the processing scene of the electronic blackboard device 1.

  The lighting circuit 23 energizes the light source 12 when reading characters or the like drawn on the sheet 4 and turns on the light source 12. When the light source 12 is turned on, the reflected light from the sheet 4 is condensed on the CCD line sensor 15 via the lens 14 and the like, and the CCD line sensor 15 outputs an electrical signal corresponding to the visible light received.

  The image processing unit 24 amplifies the electric signal for each line output from the CCD line sensor 15, and A / D converts the electric signal amplified by the amplifier into a gradation value corresponding to the intensity to convert the digital data. It consists of an A / D converter to be generated.

  In response to the power switch 8 being switched to the power-on state, the power supply unit 26 takes in the operating power from the external power supply 30 such as a commercial AC power supply and supplies it to each part constituting the control circuit.

  When the USB connector 41 of the USB memory 40 is connected to the USB port 9, operating power is supplied from the power supply unit 26 to the USB memory 40 via the USB port 9. The USB memory 40 receives this operating power and writes and reads data to and from the built-in memory. The camera image processing unit 52 corrects distortion of the video imaged by the camera 50.

  The electronic blackboard device 1 is provided with an image output port 53 such as analog RGB or HDMI (registered trademark).

  Hereinafter, a specific operation of the electronic blackboard device 1 having the above configuration will be described.

  The contents written on the writing surface 4 a of the electronic blackboard device 1 by the meeting attendee are captured by the camera 50, corrected for distortion by the camera image processing unit 52, and output from the image output port 53. This output can then be input to the projector 60 and projected as shown in FIG. Further, this output may be distributed via a network (not shown).

  When storing characters written on the writing surface 4a, the power switch 8 is first switched to a power-on state. When the print button on the operation panel 7 is operated with operating power supplied from the power supply unit 26, the CPU 20 captures characters and the like drawn on the writing surface 4a as image data. Specifically, the light source 12 is turned on by the lighting circuit 23, the SF motor 25 is rotated to convey the sheet 4, and the image processing unit 24 is instructed to generate image data. Upon receiving this instruction, the image processing unit 24 converts the electric signal for each line output from the CCD line sensor 15 into digital data. The SF motor 25 rotates until the image processing unit 24 finishes obtaining digital data corresponding to the last line of the writing surface 4a at the time when the print button is operated. Then, the image processing unit 24 generates one grayscale image data by combining all the digital data acquired until the SF motor 25 is stopped in the line order, and outputs the grayscale image data to the CPU 20. The CPU 20 stores the gray scale image data thus captured in the RAM 22. Then, the CPU 20 binarizes the grayscale image data stored in the RAM 22 with, for example, a gradation threshold corresponding to a preset density, generates monochrome image data, and outputs the monochrome image data to the printer 5. The printer 5 prints the input monochrome image data on a paper medium and discharges it to the outside. If it is desired to store electronic data instead of paper media, electronic data is created by selecting electronic data storage on the operation panel 7 and stored in the USB memory 40 via the USB port 9.

  As described above, the electronic blackboard device 1 according to the present embodiment includes the camera 50 that captures the writing surface 4a and the image forming unit that outputs characters and the like drawn on the writing surface 4a as image data. As a result, it is possible to provide shooting information of the writing surface 4a even to a person who is in a position where the writing surface 4a of the electronic blackboard device 1 is not easily visible, and also image data such as characters drawn on the writing surface 4a. Provision is possible.

(Second Embodiment)
The electronic blackboard device 1 described in the first embodiment includes a camera 50 that captures the writing surface 4a and an image forming unit that outputs characters and the like drawn on the writing surface 4a as image data. While attending the conference, the attendee confirms the information captured by the camera 50 and then receives image data such as characters drawn on the writing surface 4a as paper media or electronic data. Since this image data is often stored, high resolution is required. However, the video by the camera 50 is often viewed only at the meeting place, and high resolution is not required compared to the image data.

  The electronic blackboard device 1 according to the second embodiment includes a camera 50 that captures the writing surface 4a and an image forming unit that outputs characters and the like drawn on the writing surface 4a as image data. The resolution of the camera 50 that captures the writing surface 4a is lower than the resolution of the image forming unit that outputs characters and the like drawn on the writing surface 4a as image data. As a result, the price of the camera 50 can be reduced, and the price of the electronic blackboard device 1 can be reduced.

  Although several embodiments of the present invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1. Electronic blackboard device 3. Frame 4. Sheet 4a. Writing surface 5. Printer 7. Operation panel 9. USB port 50. Camera 53. Image output port

Claims (4)

A writing surface that can be written with a writing instrument;
Reading means for reading the information on the writing surface and creating image data;
Printing means for printing an image on a print medium using the image data;
An imaging unit for imaging information on the writing surface;
An output port unit that outputs video data imaged by the imaging unit;
Electronic blackboard device having   2. The electronic blackboard apparatus according to claim 1, further comprising a recording port unit for connecting the image data recording unit. A writing surface that can be written with a writing instrument;
Reading means for reading the information on the writing surface and creating image data;
Printing means for printing an image on a print medium using the image data;
An imaging unit having a resolution lower than the resolution of the reading means for imaging the information on the writing surface;
An output port unit that outputs video data imaged by the imaging unit;
Electronic blackboard device having   4. The electronic blackboard device according to claim 3, further comprising a port unit for connecting the image data recording unit.

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