JP3863007B2 - Electronic blackboard equipment - Google Patents

Description

[0001]
[Field of the Invention]
The present invention relates to an electronic blackboard apparatus used for meetings, education, and the like, and more specifically, projects a still image such as a desired format or material on the blackboard surface, reads a composite still image added to the still image, and The present invention relates to an electronic blackboard device that can be selectively stored, reproduced, and erased.
[0002]
[Prior art]
Conventionally, a pre-made format is created in advance for meetings, education, or various presentations, and this is displayed on an electronic blackboard via a projection device and added to the display screen as necessary to advance the meeting. It is done smoothly. In such a conventional electronic blackboard device, when a written image by a marker pen or the like is combined with a still image projected on the blackboard surface, a coordinate detection device is provided, and a system in which a personal computer is connected to the coordinate detection device is constructed. Then, the coordinates of the writing position of the marker pen are detected and the alignment is performed.
[0003]
Such an electronic blackboard is disclosed in, for example, Japanese Patent Laid-Open No. 9-175084. This electronic blackboard projects a format image from a projection unit provided in front of a blackboard body, writes the image on a writing image on which the format image is projected, and forms an image on a writing surface. In particular, here, when the format image is projected onto the writing surface, the image is projected along with the writing mark or the positioning mark provided around the writing surface, thereby being projected with the image data of the written image read by the reading unit. The format data of the existing format image is combined.
[0004]
[Problems to be solved by the invention]
However, the conventional electronic blackboard as described above has a problem that the system becomes large because a coordinate detection device and its control device are required to obtain a composite image. In addition, if the image data of the written image and the format data of the projected format image are aligned at the projection position, it is necessary to perform the alignment with high precision, so that a positional shift may occur or the composition However, there is a problem that a composition function must be provided in addition to the memory. Further, when the projection unit is separated from the blackboard body, the user often becomes an obstacle to the projection image, and there is a problem that the projection image is easily lost due to a shadow.
[0005]
The present invention has been made in view of the above, and has as its first object to acquire an accurate composite image by integrally reading a still image and a written image and to reduce the size of the system. To do.
[0006]
It is a second object of the present invention to avoid the occurrence of a missing projection image by providing a means for performing projection at a position that does not interfere with the user.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the electronic blackboard device according to claim 1, in the electronic blackboard device provided with a writing display means capable of writing and erasing, the electronic blackboard device is configured integrally with the device and externally provided. A projection optical system that forms a still image such as a ready-made format or document and projects it on the writing display means, and transmits an image projected by the projection optical system on an optical path of the projection optical system. transmission and reflection means for reflecting disposed, the image reading means having a reading optical system that reading is reflected by said transmitting and reflecting means synthetic writing image written on the still picture to be projected by the projection optical system It is equipped with.
[0008]
According to the present invention, when an image obtained by combining a still image projected on the writing display means and a writing image by a marker pen or the like is obtained, these images are integrally written on the writing display means. By reading, it is possible to realize a small system that does not require alignment between a still image and a written image, that is, does not require coordinate detection or mark alignment as in the prior art.
[0009]
In the electronic blackboard device according to a second aspect of the present invention, the image projection reading means is installed above the front side of the writing display means.
[0010]
According to the present invention, in the first aspect, by providing a projection in front of the upper part of the apparatus, when a projected still image is added with a marker pen or the like, the occurrence of problems such as hindrance by the user is reduced.
[0011]
Further, in the electronic blackboard device according to claim 3, the image reading and projecting means emits irradiation light and irradiates the rewritable film with image forming means composed of a transparent rewritable film, and the rewritable film. Light irradiating means for projecting an image formed on the film onto the writing display means, and reading means for irradiating the image written on the writing display means with the light irradiating means and taking the reflected light and reading it as image information And.
[0012]
According to the present invention, in claim 1, the image projection reading means and the image forming means composed of a transparent rewritable film and the irradiation light are emitted to irradiate the rewritable film to form an image on the rewritable film. A light irradiating means for projecting the image on the writing display means, and a reading means for irradiating the image written on the writing display means with the light irradiating means and taking the reflected light and reading it as image information. , Formatting images and materials on rewritable film, projecting the image on the writing display means, a still image (or a composite still image) is displayed, and a written image written on the still image By simultaneously reading (displayed image), it is not necessary to match the images.
[0013]
In the electronic blackboard device according to a fourth aspect of the present invention, the image forming means further includes an erasing means for erasing the formed image.
[0014]
According to the present invention, in the third aspect, the image formed on the rewritable film for projection is erased by the erasing means, so that the processing after projection or storage can be easily performed.
[0015]
Moreover, in the electronic blackboard apparatus according to claim 5, the rewritable film is formed of a roll-shaped winding film.
[0016]
According to the present invention, in the third aspect, by adopting the configuration of the roll-shaped take-up type rewritable film, switching of a plurality of still images can be realized by simple conveyance (winding).
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an electronic blackboard device according to the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to this embodiment.
[0018]
FIG. 1 is an explanatory diagram showing an outline of an electronic blackboard device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing a projection state thereof. The electronic blackboard device 10 is mainly composed of an electronic blackboard main body 100, a writing display unit 110, and a projection unit 120, as will be described later.
[0019]
The writing display unit 110 is made of a polymer material that can be written and erased on a plurality of pipe-shaped rollers (not shown), and is configured by a multi-screen endless sheet method or a winding sheet method having at least two screens. It is a sheet-like screen.
[0020]
The projection unit 120 is fixed to the upper front portion of the electronic blackboard main body 100 by an arm-shaped support member, and is configured to project obliquely onto the writing display unit 110 as shown in FIG. FIG. 3 is an explanatory diagram showing the internal configuration of the projection unit 120.
[0021]
As shown in FIG. 3, the projection unit 120 generally includes an irradiation unit 130, an image forming unit 140, a reading unit 150, and a projection lens 160.
[0022]
The irradiation unit 130 includes a lamp 131, a reflector 132 that reflects the radiated light from the lamp 131 in one direction, and a collimator lens 133 that collimates the reflected light from the reflector 132. The collimating lens 133 may be a full lens or a multi-lens array composed of fly-eye lenses.
[0023]
The image forming unit 140 is formed by winding a rewritable film 141 and a rewritable film 141 which are made of a transparent and high-permeability, for example, a colorless and transparent polymer material, and are configured to be a winding type that can be repeatedly printed and erased by thermal conditions. And rotating rollers 142 and 143, a thermal head 144 which is a heating element for printing on the rewritable film 141, and a heating element such as a ceramic heater for erasing information printed on the rewritable film 141. An erasing unit 145 and a driving unit 146 using a drive motor or a transmission mechanism are provided to drive the rollers 142 and 143.
[0024]
The image forming unit 140 includes a thermoreversible recording medium, a CTC film, as disclosed in, for example, JP-A-6-155858, JP-A-5-69664, and JP-A-60-52388. , CTC card, and so on.
[0025]
The reading unit 150 is disposed at an angle of 45 ° with respect to the projection optical axis and the reading optical axis, and includes a half mirror 151 for transmitting (projecting) and reflecting (reading), a line sensor type CCD, an area type CCD, and the like. A CCD 152 using either of them and an imaging lens 153 for forming an image on the CCD 152 are provided. When a line sensor type CCD is used, a scanning mechanism (not shown) that scans in the sub-scanning direction of the writing display unit 110 at the image formation position is provided.
[0026]
FIG. 4 is a block diagram showing the main configuration of the above-described electronic blackboard device 10 and will be described including the above-described configuration. As shown in the figure, this electronic blackboard apparatus is provided with a projection unit 120 on an electronic blackboard body 100 and an operation panel 170 for operating them.
[0027]
The electronic blackboard device 100 stores a power switch 101, a motor driver 103 that drives and controls a drive motor 102 that performs roll driving of the writing display unit 110, an image processing unit 104, and a storage device 105 that stores and can read the read writing image. For example, a printer 106 that outputs a read image or a stored image using a thermal printer, and a main controller 107 that comprehensively controls these functional operations are provided.
[0028]
The operation panel 170 includes at least a projection switch 171 that is pressed during a projection operation, a reading switch 172 that is pressed during a reading operation, a print switch 173 that is pressed during print output, and a storage that is pressed when storing a read image. A switch 174, an erasing switch 175 that is pressed when erasing the projected image, and a forward / reverse switch 176 that moves the writing display unit 110 are provided. In addition, the projection unit 120 is provided with a control unit 121 that controls the irradiation unit 130, the image forming unit 140, and the reading unit 150.
[0029]
In other words, the electronic blackboard main body 100 is provided with a power switch 101, and after the power switch 101 is turned on, various operations are generally performed by the main controller 107 in accordance with a press signal from the operation panel 170. Has been.
[0030]
Next, the operation of the electronic blackboard apparatus configured as described above will be described. In the irradiation unit 130, the irradiation light from the lamp 131 is transmitted through the rewritable film 141 through the reflector 132 and the collimating lens 133, and information printed on the rewritable film 141 is written as a projection image 115 by the projection lens 160. Projected on.
[0031]
Printing on the rewritable film 141 is performed by the image forming unit 140 through a recording medium such as a flexible disk, for example, in a format or data (hereinafter referred to as a still image) created in advance by a personal computer. This operation is performed by inserting a flexible disk into a flexible disk drive provided in the apparatus and depressing the projection switch 171 on the operation panel 170. Further, when the projection switch 171 is pressed, a still image printed on the rewritable film 141 is projected on the writing display unit 110 as a projection image 115.
[0032]
Printing of still images on the rewritable film 141 can be performed by the number of pages required by the user. The user advances or rewinds the rewritable film 141 configured in a roll-up manner with a switch (not shown), and presses the projection switch 171 on the operation panel 170 to press a still image to be projected onto the writing display unit 110.
[0033]
Moreover, necessary information can be arbitrarily entered in the still image projected on the writing display unit 110 with, for example, a marker pen, and the conference can be advanced. When the user wants to save the content written in the still image (hereinafter referred to as a handwritten image), the reading unit 150 causes the reading unit 150 to press the save switch 174 provided on the operation panel 170. The handwritten image is read in a form synthesized (filled) by the rewritable film 141 and stored in the storage device 105. If the information is to be projected again, the information is read from the storage device 105, formed on the rewritable film 141, and irradiated by the irradiation unit 130.
[0034]
In addition, when projecting a new still image, by depressing a forward / reverse switch 176 provided on the operation panel 170, the handwriting display unit 110 configured in an endless manner is conveyed, and a new display surface appears. By pressing the projection switch 171, a necessary still image is projected.
[0035]
In addition, the composite data of the still image and the handwritten image stored in the storage device 104 is newly printed on the rewritable film 141, so that even on the screen from which the handwritten image is erased, it is written as repeated composite data, that is, as a composite still image. It can be reproduced on the display unit 110. Even if writing with the marker pen is further performed on the reproduced composite still image, the necessary still image can be reproduced on the writing display unit 110 by repeating the above-described operation.
[0036]
Further, when it is desired to print the still image or composite still image currently displayed as described above, the print image is output from the printer 106 by pressing the print switch 173 of the operation panel 170. If the still image or the composite still image is to be stored, the storage switch 174 of the operation panel 170 is pressed to store the still image or the composite still image.
[0037]
Even when the projector 120 uses a normal electronic blackboard or whiteboard without projecting a still image, by pressing the reading switch 172 of the operation panel 170, a written image written with a marker pen is read by the reading unit 150. Can be read. Further, if this is printed on the rewritable film 141, it is possible to repeatedly reproduce the still image on the writing display unit 110 even on a screen from which the written image has been deleted. Also in this case, printing from the printer 106 is possible.
[0038]
When erasing the contents printed on the rewritable film 141, the rewritable film 141 is moved toward the erasing portion 145 formed of a heating element such as a ceramic heater by pressing an erasing switch 105 provided on the operation panel 170. Transported and erased.
[0039]
【The invention's effect】
As described above, according to the electronic blackboard device (claim 1) of the present invention, when obtaining an image obtained by combining a still image projected on the writing display means and a writing image by a marker pen or the like, these images are obtained. Is displayed integrally on the writing display means, and by reading this, positioning of the still image and the writing image is not required for coordinate detection or mark alignment as in the conventional case. Since the image projection reading means is integrated with the apparatus, a small system can be realized.
[0040]
Further, according to the electronic blackboard device (Claim 2) of the present invention, when a projected image is added with a marker pen or the like by providing a projection in front of the upper part of the device, it is determined by the user. Occurrence of problems such as obstructions of hands and the like is reduced, so that occurrence of problems such as missing projection images can be reduced.
[0041]
According to the electronic blackboard device (Claim 3) of the present invention, in Claim 1, the image projection reading means emits irradiation light and image forming means composed of a transparent rewritable film, and the rewritable Light irradiation means for irradiating the film and projecting the image formed on the rewritable film onto the writing display means, and irradiating the image written on the writing display means with the light irradiation means, capturing the reflected light and image information And a reading unit that reads the image, forms a format image or material on a rewritable film, and projects the image on the writing display unit to display a still image (or a composite still image). Furthermore, by reading the written image written on the still image at the same time, it is not necessary to align both images. It is possible to eliminate the raw.
[0042]
According to the electronic blackboard device (Claim 4) of the present invention, since the image formed on the rewritable film for projection on the rewritable film is erased by the erasing means in Claim 3, Processing after storage can be easily performed.
[0043]
Further, according to the electronic blackboard device (Claim 5) of the present invention, since the roll-up type rewritable film structure is used in Claim 3, the switching operation (operation) of a plurality of still images is simplified. It can be realized by simple conveyance (winding).
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an outline of an electronic blackboard device according to an embodiment of the present invention;
2 is an explanatory view showing a projection state in the electronic blackboard device of FIG. 1; FIG.
3 is an explanatory diagram showing an internal configuration of a projection unit in FIG. 1. FIG.
FIG. 4 is a block diagram showing a main configuration of the electronic blackboard device according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Electronic blackboard apparatus 100 Electronic blackboard main body 110 Writing display part 120 Projection part 130 Irradiation part 140 Image formation part 141 Rewritable film 144 Thermal head 145 Erase part 150 Reading part 160 Projection lens 170 Operation panel

Claims (5)

In the electronic blackboard device provided with a writing display means capable of writing and erasing,
A projection optical system that is configured integrally with the apparatus, forms a still image such as a ready-made format or document according to an instruction from the outside, and projects the image on the writing display unit; and the optical path of the projection optical system A transmissive / reflective unit that transmits and reflects an image projected by the projection optical system is arranged, and a composite written image written on the still image projected by the projection optical system is reflected by the transmissive / reflective unit and read. electronic blackboard apparatus further comprising an image reading means having a reading optical system and feature. 2. The electronic blackboard apparatus according to claim 1, wherein the image projection reading unit is installed on an upper front side of the writing display unit. The image reading and projecting means includes
An image forming means composed of a transparent rewritable film;
Emitting light, irradiating the rewritable film, and projecting an image formed on the rewritable film onto the writing display means; and
Reading means for irradiating the image written on the writing display means with the light irradiation means, taking the reflected light and reading it as image information,
The electronic blackboard apparatus according to claim 1, further comprising:   4. The electronic blackboard apparatus according to claim 3, wherein the image forming unit further includes an erasing unit that erases the formed image.   4. The electronic blackboard device according to claim 3, wherein the rewritable film is formed of a roll-shaped winding film.

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