JPH11161194A - Electronic blackboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by using the same ROM for the standard type electronic blackboard whose length of the writing surface facing the outside from the front window of the blackboard main body is to a standard size and a non-standard type electronic blackboard, thereby sharing a control board. SOLUTION: The writing surface is formed by a portion of the endless writing sheet, which is spread over in the internal section facing the outside from a front window of a flat blackboard. A control board 30 is provided with a switching means 31, which conducts on and off operations depending on whether the sheet transport direction length of the writing surface is a prescribed length of the standard surface or not, a ROM 32 which stores a control program, and a CPU 33 which detects the on and off operations of the means 31, varies the transport speed of the writing sheet so that the reading time of the standard type and the wide type are made same, reads the control program of the ROM 32 and controls a printer based on the read contents provided by an optical reading device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing surface formed by, for example, making a part of a writing sheet stretched inward from a front window of a blackboard body to the outside and forming a writing surface on the writing surface using a writing implement. The present invention also relates to an electronic blackboard for reading an optical reading device and copying the written contents as necessary.

[0002]

2. Description of the Related Art Conventionally, an endless writing sheet is stretched between a plurality of rollers in an electronic blackboard of this type, for example, in a horizontally long flat blackboard body, and as shown in FIG. There is a standard type in which a part of the blackboard main body is exposed from the front window 2 to the outside, and the length L of the sheet in the sheet conveying direction A forms a standard writing surface 3.

[0003] When used, characters and pictures are written on the writing surface 3 using a writing implement such as a marker pen. When making a copy of the written contents, the written contents on the writing surface 3 are read by an optical reading device while the rollers are rotated and the writing sheet 1 is conveyed, and a signal from the optical reading device is input to the printer to read the written contents. Is reduced and printed out to, for example, an A4 size by a printer.

[0004] In addition to the standard type shown in FIG. 9, some electronic blackboards have a writing surface 4 as shown in FIG.
And the length L ₁ is there is a wide type formed in a long predetermined wide surface than the standard type.

In the case of the wide type, when making a copy of the written contents, the writing sheet 5 is conveyed at the same speed as that of the standard type, and the written contents on the writing surface 4 are read by the optical reading device. Since the surface 4 is longer than the standard type, a part of the reading line read by the optical reading device is thinned out by the ROM provided on the control board and printed out to the same A4 size as the standard type by the printer.

For this reason, conventionally, in a wide type electronic blackboard, unlike a standard type, a separate dedicated ROM storing a control program required for thinning processing is prepared, and a control board provided with the dedicated ROM is mounted in the body of the blackboard. Was incorporated.

[0007]

However, in the prior art,
As described above, since the standard type electronic blackboard and the wide type electronic blackboard each require a separate control board having a dedicated ROM, there is a problem that the cost is increased accordingly.

[0008]

Therefore, according to the present invention, a plurality of rollers 20 and 2 are provided in a blackboard main body 10 as in an embodiment described with reference to the following drawings.
An endless writing sheet 15 is stretched between them, and a part of the sheet 15 is exposed from the front window 13a of the blackboard body 10 to form a writing surface S, and writing is performed on the writing surface S using a writing tool. When copying the written content, the rollers 20 and 21 are rotated to convey the writing sheet 15 while the written content on the writing surface S is read by the optical reading device 14 and the printer 18 is read. A switch means 31 for turning on and off according to whether or not the length of the writing surface S in the sheet conveyance direction is a standard surface having a predetermined length; a ROM 32 storing a control program; The on / off state of the writing sheet 31 is detected to change the conveyance speed of the writing sheet 15, and the control program in the ROM 32 is read to control the printer 18. That the CPU 33, characterized in that it comprises a.

In the present invention, the switch means 31 is turned on and off in advance depending on whether the writing surface S is a standard surface. Then, when copying the written contents,
At 33, the on / off of the switch means 31 is detected and the conveying speed of the writing sheet 15 is changed. That is, for example, when the switch means 31 is turned on, the type is determined to be the standard type, and the rollers 20 and 21 are rotated at a constant reference speed to convey the writing sheet 15. On the other hand, when the switch means 31 is off, for example, it is determined to be a wide type, for example, and the rollers 20 and 21 are rotated at a constant speed higher than the reference speed to write the writing sheet 15.
And the contents written on the writing surface S are read by the optical reading device 14.
And the CPU 33 reads the control program in the ROM 32 to control the printer 18. The printer 18 controls the printer 18 in accordance with the read contents, for example, the same type as the standard type.
Print out to size.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an external perspective view of a standard type electronic blackboard to which the present invention is applied, and FIG. 3 is a schematic configuration diagram showing an internal mechanism thereof as viewed from above.

As shown in FIG. 2, the electronic blackboard has a flat, slightly rectangular, flat blackboard body 10 supported by a stand 11 with casters so as to be movable.

The blackboard main body 10 is not shown in the drawing, is supported by a base frame, is provided with an outer case 13 in which a front window 13a is largely opened on the front side, and a part of a writing sheet 15 described later is passed through the front window 13a. The writing surface S is formed outside.

The blackboard main body 10 includes an outer case 13.
Operation panel 16 provided with a copy switch on one side edge of
And an elongated pen tray 17 is provided along the lower edge of the outer case 13. Further, a printer 18 is attached to the lower right side of the rear base frame.

As shown in FIG. 3, the blackboard main body 10 has a driving roller 20 and a driven roller 21 on both right and left sides of the inside thereof.
The roller shafts are rotatably supported by upper and lower frames (not shown). Also, between the rollers 20 and 21,
A back plate 24 is provided supported by the upper and lower frames. Then, the endless writing sheet 15 is placed between the rollers 20 and 21.
And a writing surface S is formed on the front side by backing with a back plate 24. The length L of the writing surface S is a constant standard length,
For example, 1260 mm.

Further, an optical reading device 14 is provided in the blackboard main body 10 behind the writing sheet 15. The optical reader 14 includes a fluorescent lamp 25, a mirror 26, a lens 27,
It is composed of a CCD 28 or the like.

When the above-described electronic blackboard is used, characters, pictures, and the like are written on the writing surface S using a writing implement such as a marker pen on the pen tray 17.

When a copy of the written contents is to be made, a copy switch on the operation panel 16 is operated to drive a sheet driving motor (not shown) to rotate the driving roller 20 and to rotate the driven roller 21 while being driven. Writing sheet 1
5 in the direction of arrow A. Then, the writing surface S of the sheet 15 is irradiated with light from the fluorescent lamp 25 of the optical reading device 14 and the reflected light is reflected by the mirror 26, passes through the lens 27, forms an image on the CCD 28, and writes the writing contents. Read. Then, a signal from the optical reading device 14 is input to the printer 18, and the recorded content is discharged while reducing the read content and recording the reduced content on the paper stored in the printer 18.

On the other hand, when erasing the written contents, the writing surface S is wiped with an eraser (not shown) to erase the written contents.

FIG. 4 shows, from above, the internal mechanism of a wide type electronic blackboard to which the present invention is applied.

This wide type electronic blackboard is formed on the blackboard body 10 with a front window 13a left and right larger than the standard type, and a writing surface S facing the front window 13a.
And the length L ₁ is as long predetermined wide surface than the standard type. The length L ₁ of the wide writing surface S,
For example, it is 1700 mm which is 1.35 times the standard length L.

The configuration is almost the same as that of the standard type except that the writing surface S is widened.

Then, the same control boards 30 for controlling the entire operation are attached to the wide type and standard type electronic blackboards as shown in FIG. 1, for example, on the rear base frame.

The control board 30 is provided with a switch means 31 for turning on or off the writing surface S depending on whether the writing surface S is a standard surface of a predetermined length L on the left end side in the figure, and a ROM 32 storing a control program on the right end side. Is provided. As the switch means 31, for example, a dip switch is used. At the approximate center, the on / off of the switch means 30 is detected, and based on the detection result, the driving of the sheet drive motor is controlled to change the conveying speed of the writing sheet 15 and the ROM 3
And a CPU 33 for reading the control program from the printer 2 and controlling the printer 18.

The reference numeral 34 in the figure denotes the optical reading device 14.
A memory 32 for storing the image data read by
Reference numeral 35 denotes an LSI that processes image data.

When assembling the control board 30 to the standard type electronic blackboard shown in FIG. 3, the switch means 30 is manually turned on. On the other hand, when assembling to the wide type electronic blackboard shown in FIG. 4, the switch means 30 is set to off.

After that, when both types of electronic blackboards are used after being turned on, the control board 30 controls the respective electronic whiteboards under the control as shown in the flowchart of FIG. 5, for example.

First, when the power is turned on, step S1 is executed.
Initializes the CPU 33. Next, after the image processing LSI 35 is initialized in step S2,
Proceed to 3.

In step S3, it is checked whether the switch means 31 is on. If the switch means 31 is on, the process proceeds to step S4 to set the flag to on. On the other hand, if the switch means 31 is off, the process proceeds to step S5 to set the flag to off.

Thereafter, the process proceeds to step S6, where the RAM
(Work area) is initialized, and then step S
Go to 7. Then, in step S7, it is checked again whether the switch means 31 is on. When the switch means 31 is on and the flag is on, step S
At 8, the CPU 33 sets the electronic blackboard to the first mode of the standard type. On the other hand, when the switch means 31 is off and the flag is off, the CPU 33 is set to the second mode of the wide type in step S9.

Then, the process proceeds to step S10, where the remaining necessary initialization is performed, and the initial processing of the electronic blackboard is completed.

After the initial processing, when the electronic blackboard to be used is a standard type, when the copy switch is operated for copying, the CPU 33 controls the driving of the sheet driving motor to make the writing sheet 15 a fixed standard. Transport at speed,
The written content on the writing surface S is read by the optical reading device 14, the read image data is stored in the memory 32, and the control program is read from the ROM 32 by the CPU 33, the image data is processed by the LSI 35, and according to the read content. Reduced by the printer 18 to paper
Print out to 4 sizes.

On the other hand, if the electronic blackboard to be used is a wide type, and the copy switch is similarly operated, the CPU 3
In step 3, the drive of the sheet drive motor is controlled to convey the writing sheet 15 at a speed 1.35 times the reference speed. While the writing sheet 15 is being conveyed at that speed, the written content on the writing surface S is read by the optical reading device 14 as in the case of the standard type, and the read image data is stored in the memory 32 and the CPU 33 With ROM32
Then, the control program is read from the LSI, the image data is processed by the LSI 35, and the image data is reduced by the printer 18 according to the read content and printed out on a sheet in the same A4 size as the standard type.

FIG. 6 shows the timing a of image processing for one line read by the LSI 35, the distance b the writing sheet 15 travels by one line in the case of a standard type electronic blackboard, and the wide type electronic blackboard. In case of writing sheet 1
5 is a timing chart showing a distance c that advances by one line.

In the case of the standard type, the writing sheet 1
The distance b for which 5 advances for each line is 0.57 mm, and for the wide type, the distance c for which each line advances is 0.77 mm
It is. In such a wide type electronic blackboard, at the time of reading, the writing sheet 15 advances 1.35 times faster for each line than the standard type. Therefore, as can be seen from FIG. 6, the writing surface S can be read in the wide type in the same time as in the standard type.

By the way, the present invention relates to a standard type in which a writing sheet 15 is stretched between four rollers as shown in FIG. 7, for example, and a writing sheet 1 as shown in FIG.
The same can be applied to a wide type electronic blackboard in which 5 is stretched between four rollers.

[0036]

According to the first aspect of the present invention, the standard type and the non-standard type differ in length depending on whether the writing surface is a standard surface having a predetermined length or not, with different conveying speeds of the writing sheet. The writing surface is read at the same time, so that, for example, in the case of the wide type, it is not necessary to thin out a part of the reading line in the ROM as in the related art.
The same ROM as the standard type electronic blackboard can be used, so that the control board can be shared between the standard type and the wide type. As a result, the number of components can be reduced, and replacement of the control board is not required, so that the overall cost can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a control board provided in the present invention.

FIG. 2 is an external perspective view of a standard type electronic blackboard to which the present invention is applied.

FIG. 3 is a schematic configuration diagram showing an internal mechanism of the electronic blackboard as viewed from above.

FIG. 4 is a schematic configuration diagram showing an internal mechanism of a wide type electronic blackboard to which the present invention is applied, as viewed from above.

FIG. 5 is a flowchart showing an initial processing operation of the electronic blackboard by the control board.

FIG. 6 is a schematic configuration diagram similar to FIG. 3, showing another example of a standard type electronic blackboard to which the present invention is applied.

FIG. 7 is a schematic configuration diagram similar to FIG. 4, showing another example of a wide type electronic blackboard to which the present invention is applied.

FIG. 8 is a timing chart for reading one line on the electronic blackboard.

FIG. 9 is a schematic view showing the size of a conventional standard type front window.

FIG. 10 is a schematic view showing the size of a conventional wide type front window.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Blackboard main body 13a Front window 14 Optical reading device 15 Writing sheet 18 Printer 20 ・ 21 Roller 31 Switch means 32 ROM 33 COU S Writing surface

Claims (1)

[Claims] An endless writing sheet is stretched between a plurality of rollers in a main body of a blackboard, and a part of the sheet is exposed from a front window of the main body of the blackboard to form a writing surface, and the writing surface is formed on the writing surface. When writing using a writing instrument and copying the written content, the written content on the writing surface is read by an optical reading device while the roller is rotated to convey the writing sheet, and the paper is printed by a printer. A switch means for turning on and off according to whether the length of the writing surface in the sheet conveyance direction is a standard surface having a predetermined length, a ROM storing a control program, and detecting on / off of the switch means. An electronic whiteboard, comprising: a CPU that reads the control program from the ROM and controls the printer while changing the transport speed of the writing sheet.