JP3372360B2 - Electronic blackboard device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blackboard device having a function of erasing an image written on a blackboard surface.

[0002]

2. Description of the Related Art Conventionally, an electronic blackboard device has a blackboard surface on which an image is written with a pen or the like, and an image written on the blackboard surface can be printed on a large number of printing sheets. By doing so, it is possible to distribute the paper on which the image of the electronic blackboard device is printed to the participants during a meeting, and each participant does not need to copy the image of the electronic blackboard device. Therefore, the efficiency of the conference can be improved.

Further, JP-A-4-368895 and JP-A-4-368895.
267667, JP-A-1-151356, JP-A-63-2099
In Japanese Patent Laid-Open No. 99, Japanese Patent Application Laid-Open No. 60-263557, and the like, it is proposed that an electronic blackboard apparatus reads an image written on an original with an image scanner and prints it out on the blackboard surface. By doing so, since the image of the document can be presented to the participants of the conference, the efficiency of the conference can be improved.

[0004] Then, JP-A-61-189063 and JP-A-6189063
In the electronic blackboard device disclosed in Japanese Patent Publication No. 5-14564, a blackboard surface is provided by stretching a wide, endless sheet body in a flat plate shape so as to be rollable, and the sheet is placed at a position separated from the blackboard surface. A cleaning mechanism is provided in which a cleaning member is freely attached to and detached from the body. By doing so, when the user manually operates the predetermined switch, the image written on the blackboard surface can be erased by the cleaning mechanism.
It is not necessary for the user to manually erase the image written on the blackboard surface, and the burden on the user can be reduced.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The electronic blackboard device disclosed in JP-A-61-189063 and JP-A-5-14564 is such that an image written on the blackboard surface is erased by a cleaning mechanism. It eliminates the need for the user to manually erase the image written on the blackboard surface.

However, the conventional electronic blackboard device is used for blackboard printing.
If you want to print the image on the blackboard surface by means,
Preprinted images may be printed on the blackboard
There is a problem .

[0007]

[0008]

[0009]

Means for Solving the Problems The invention according to claim 1,
A blackboard surface on which an image is written is provided, a blackboard reading means for reading the image written on the blackboard surface is provided, and an original reading means for reading the image written on the original is provided. With the original reading means and the blackboard reading means, An image storage unit for storing the read image data is provided, and a paper printing unit for printing out the image data stored in the image storage unit on a printing sheet is provided, and the image data stored in the image storage unit is used for the blackboard. A blackboard printing means for printing out on the surface is provided, and an image erasing means for erasing the image written on the blackboard surface by the blackboard printing means is provided, and when printing an image on the blackboard surface by the blackboard printing means, Erasing control means for erasing the image previously printed on the blackboard surface by the blackboard printing means by the image erasing means is provided.

According to a second aspect of the present invention, a blackboard surface on which an image is written is provided, blackboard reading means for reading the image written on the blackboard surface is provided, and original reading means for reading the image written on the original is provided. An image storage means for storing the image data read by the original reading means or the blackboard reading means, and a paper printing means for printing out the image data stored by the image storage means on a printing paper; The blackboard printing means for printing out the image data stored in the storage means on the blackboard surface is provided, and the image erasing means for erasing the image written on the blackboard surface by the blackboard printing means or the like is provided. When an image is printed on the blackboard surface, the blackboard reading means reads the blackboard surface and detects that there is no image. Printing control means starts printing by the blackboard printing means. Provided.

According to a third aspect of the present invention, in the second aspect of the invention, when the blackboard printing means prints an image on the blackboard surface, the blackboard reading means reads the blackboard surface and detects that there is an image. An erasing control means for erasing the image by means is provided, and when the image erasing means erases the image by the erasing control means, the print controlling means starts printing by the blackboard printing means.

According to a fourth aspect of the present invention, in the second or third aspect of the invention, when the blackboard printing means prints an image on the blackboard surface, the blackboard reading means reads the blackboard surface and detects that there is an image. The image data read by the blackboard reading means is printed out on a printing paper by the paper printing means.

The blackboard referred to in the present invention means a panel that presents an image, and does not mean that it is black.

[0014]

[0015]

[0016]

[Action] The invention of claim 1, wherein, when printing an image on the board surface with blackboard printing means, erasing control means an image preprinted on the board surface with blackboard printing means by erased by the image erasing means , The image is not printed over the image.

According to a second aspect of the present invention, when the blackboard printing means prints an image on the blackboard surface, when the blackboard reading means reads the blackboard surface and detects that there is no image, the print control means causes the blackboard printing means. By starting printing, the image is not printed over the image.

According to the third aspect of the present invention, when the blackboard printing means prints an image on the blackboard surface and the blackboard reading means reads the blackboard surface and detects that there is an image, the erasing control means is the image erasing means. By deleting the image and starting the printing by the blackboard printing unit by the print control unit, the image is not printed over the image.

According to the fourth aspect of the present invention, when the blackboard printing means prints an image on the blackboard surface and the blackboard reading means reads the blackboard surface and detects that there is an image, the blackboard reading means reads the image. By printing out the data on the printing paper by the paper printing means, the image to be erased is copied and stored on the printing paper.

[0020]

An embodiment of the present invention will be described below with reference to the drawings. First, as shown in FIG. 1, the electronic blackboard system 1 which is the electronic blackboard device displays, on the electronic blackboard main body 2, a modulation / demodulation unit 3 for performing facsimile communication of image data and an image described on a document (not shown). A scanner system 4 which is a document reading means for reading, a printer system 5 which is a paper printing means for printing out image data on a printing paper, a personal computer 6 which executes various data processes, various data can be updated to HD (Hard Disk) freely. HDD to be stored in
(Hard Disk Drive) 7 etc. are connected.

The electronic blackboard main body 2 mechanically has a wide white endless sheet body (not shown).
Is a flat plate that is stretched freely in the left-right direction, and the surface of the sheet that is stretched in the flat plate is a blackboard surface on which an image is written with a pen (not shown) or the like. It is said that.

Therefore, a sheet reading portion 8 which is a blackboard reading means for reading an image written on the blackboard surface is fixedly arranged at a position facing the rollable sheet body. Further, a cleaner unit, which is an image erasing means for erasing the image written on the blackboard surface, is disposed so as to be able to come into contact with and separate from the position facing the rollable sheet body. This cleaner unit has a structure in which, for example, a rotatable cleaning brush to which a drive motor is connected is movably supported by an electromagnetic clutch or a solenoid, and is brought into contact with or separated from a sheet body.

A printing unit (not shown), which is a blackboard printing means for printing out image data, is movably arranged at a position facing the blackboard surface stretched in a flat plate shape on the sheet body. ing. Here, this printing unit is supported so as to move vertically and horizontally on the blackboard surface of the sheet body, and has a structure similar to that of an existing XY plotter as a whole.

The electronic blackboard main body 2 is provided with an operation display section 9 on the side of a frame (not shown) in which the sheet body is stretched, and the operation display section 9 is used to store various data manually. It is a manual operation means designated by an operation and an image display means for displaying and outputting various data. Further, a printer unit 10 that is a paper printing unit that prints out image data on a printing paper is provided below the frame in which the sheet body is stretched.

The electronic blackboard body 2 has a system control section 11 for executing various controls and an image editing section 1 for editing image data, as shown in FIG.
2 are connected to each other, and the image editing unit 12 and the system control unit 11 include the operation display unit 9, the print control unit 13 that controls the printing operation of the print unit, the sheet reading unit 8, and the printer unit. 10, the scanner system 4
Also, it is connected to the image storage unit 14, which is an image storage unit that stores the image data read by the sheet reading unit 8. Further, the system control unit 11 includes a rolling control unit 15 that drives a drive motor (not shown) that rolls the sheet body in the left-right direction, and a drive motor (not shown) that moves the printing unit in the left-right direction. ), A horizontal movement control unit 16 for driving the print unit, a vertical movement control unit 17 for driving a drive motor (not shown) for moving the printing unit in the vertical direction, and an I / O (Input / Output) for controlling input / output of various data. ) It is also connected to the unit 18 and the like.

The rolling control unit 15 outputs a pulse corresponding to the rolling amount of the sheet body to the drive motor, and the movement control units 16 and 17 control the left and right sides of the printing unit. A pulse corresponding to the amount of movement in the vertical direction and the vertical direction is output to each of the drive motors. Further, the I / O unit 18 is connected to a drive unit (not shown) of the cleaner unit, various sensors (not shown) of the printer unit 10, and the like.

Further, the scanner system 4 has a structure in which a scanner controller 21 is connected to the image scanner 20, and the scanner controller 21 is
It is connected to the system control unit 11 and the image editing unit 12 of the electronic blackboard body 2. Further, the printer system 5 includes a color printer 22 and a printer controller 2
3 has a structure in which the printer controller 23 is connected to the system control unit 11 of the electronic blackboard main body 2.
And the image editing unit 12. The system control unit 11 and the image editing unit 12 of the electronic blackboard body 2 include the modem unit 3 and the personal computer 6.
And the HDD 7 are also connected.

Further, the scanner controller 21 of the scanner system 4 is adapted to output a command for designating an image reading range, density, color, etc. to the image scanner 20, and the image scanner 20 is inputted. The image of the original is read according to the command.

Further, the printer controller 23 of the printer system 5 is adapted to output to the color printer 22 a command for designating the size and number of printing sheets, the color of image printing, etc. , Controls the size, number of sheets, printing color, etc. of the printing paper for image printing according to the input command.

The sheet reading unit 8 of the electronic blackboard main body 2 has a CCD (Charge Coupled) as shown in FIG.
The signal processing unit 25 is connected to the Device) 24, and the signal processing unit 25 is connected to the system control unit 11 and the image editing unit 12.

Here, the CCD 24 is of a three-line type in which an image written on a sheet is decomposed into RGB (Red, Green, Blue) components and read.
The (Red) color signal, the G (Green) color signal, and the B (Blue) color signal are output in parallel.

Then, the signal processing unit 25 causes the CC
The image data output by the D24 as RGB color signals is subjected to various processes such as amplification, A / D (Analog / Digital) conversion, shading correction, line position correction, and the like, and outputs it to the image editing unit 12. The clock signal CLO for each pixel is synchronized with the output of this image data.
CK, a clock signal LSYNC for each line, a signal FGATE indicating that image data is valid, and the like are output to the system control unit 11.

Further, the image storage unit 1 of the electronic blackboard body 2
4, the data processing unit 26, the frame memory 27, and the input / output control unit 28 are connected to each other as illustrated in FIG. 3, and the data processing unit 26 is connected to the image editing unit 12. The input / output control unit 28 is connected to the system control unit 11.

Here, the data processing unit 26 includes a receiver, a driver, a FIFO (First In First Out), and a LIF.
It is formed by a device such as O (Last In First Out) (neither is shown), and image data is input / output to / from the frame memory 27 in accordance with a control signal output from the input / output control unit 28. There is. Since the data processing unit 26 has not only a FIFO but also a LIFO, it is possible to output the image data stored in the frame memory 27 in the reverse of the normal one.

Further, the frame memory 27 is a DRA.
It is formed of M (Dynamic Random Access Memory) or the like, and stores image data as a bitmap.

Further, the input / output control unit 28 outputs control signals such as address and size of image data according to various signals output from the system control unit 11, so that the frame memory by the data processing unit 26 is output. Two
It is designed to control the input / output of data to / from 7.

Further, the print control section 1 of the electronic blackboard body 2
3, the data processing unit 29, the write driver 30, and the output control unit 31 are connected to each other, as illustrated in FIG. 4, and the data processing unit 29 is connected to the image editing unit 12. The output controller 31 is connected to the system controller 11, and the print unit is connected to the write driver 30.

Here, the write driver 30 has a structure in which a plurality of line drivers (not shown) are arranged in series, and holds the image data line by line to drive the print unit. Has become. Therefore, the data processing unit 29 outputs image data for each line driver of the write driver 30 that can be simultaneously written in accordance with the control signal output from the output control unit 31.
Further, the output control unit 31 includes the system control unit 1
1 according to various signals output from the data processing unit 29.
The data output to the write driver 30 is controlled.

The printer unit 1 of the electronic blackboard body 2
0 has the same structure as the print control unit 13 described above. In the print control unit 13, the data processing unit 29
Is a D that converts image data to D / A (Digital / Analog).
/ AC (Digital / Analog Convertor) or the like.

Further, the system control unit 11 of the electronic blackboard body 2 has a CPU (Central Pro) as illustrated in FIG.
RAM (Random Access Memory) in the cessing unit) 32.
33, ROM (Read Only Memory) 34, various I / O 3
5, the communication processing device 36 and the like are connected by a system bus 37, and the operation display unit 9, the sheet reading unit 8, the print control unit 13, the image storage unit 14, and the like are connected to the various I / O 35. And the scanner system 4, the printer system 5 and the like are connected to the communication processing device 36.

Here, the CPU 32 executes various kinds of data processing to control the print controller 13 and the scanner system 4 and the like.
The U32 control program is stored in the ROM 34 in advance. Further, the RAM 33 is the electronic blackboard main body 2
The processing data of the CPU 32, such as the operation mode, is temporarily stored, and when the main body power supply 80 described later is turned off, the connection is switched to a backup power supply (not shown) to hold the stored data. There is.

The various I / O 35 are composed of parallel input / output elements (not shown) and the like, and the signals input from the operation display section 9 and the like and the signals output to the print control section 13 and the like are It is supposed to be processed. The communication processing device 36 is composed of an element for external communication and processes a signal input from the scanner system 4 or the like or a signal output to the printer system 5 or the like.

As shown in FIG. 6, the image editing section 12 includes an image editing control section 38, a color recognition section 39, a color conversion section 40, an I / F (Interface) section 41, a conversion section 42 and the like. And the color conversion section 40, the I / F section 41, and the conversion section 42 are sequentially connected. Further, the sheet reading unit 8 and the like are connected to the color recognition unit 39 and the color conversion unit 40, and the operation display unit 9 and the image storage unit 14 and the like are connected to the I / F unit 41. There is. Further, the printer system 5 is added to the conversion unit 42.
Etc. are connected, and the image edit processing unit 38 is connected to the system control unit 11.

The RGB color signals output as image data by the sheet reading unit 8 are converted into single-color image data by the color conversion unit 40 to determine the presence / absence of an image. It is output to the I / F unit 41. Further, the I / F unit 41 outputs the image data to the operation display unit 9 or inputs the image data from the image storage unit 14 in order to change the magnification of the image data. Further, the conversion section 42 performs black / white inversion of image data, mirror and density adjustment, and outputs the image data to the printer system 5 or the like. The RGB color signals output by the sheet reading unit 8 as image data are
The color recognition unit 39 recognizes the RGB color levels, and the system control unit 1 recognizes from the image edit processing unit 38.
It is output to 1.

In addition, the operation display section 9 of the electronic blackboard body 2
Mechanically, the transparent keyboard panel 4 in which the pressure switches composed of transparent electrodes are arranged in a dot matrix form
3 has a structure in which an LCD (Liquid Crystal Display) module 44 in which LC (Liquid Crystal) elements are arranged in a dot matrix is stacked, and has the same structure as an existing touch panel.

In view of this, the operation display unit 9 has a circuit and a CPU 45 and a panel control unit 46 as illustrated in FIG.
And the keyboard control panel 43, the LCD module 44, and the CG (Character).
er Generator) 47 and a memory processing unit 48 are connected, and the CPU 45 is connected to a ROM 49, a RAM 50, and various I / O 5
1. The structure is such that the communication processing device 52 is connected. The system controller 11 is added to the communication processing device 52.
, A pilot lamp and various switches (both not shown) are connected to the various I / O 51, and the image editing unit 12 is connected to the memory processing unit 48.

Here, the CPU 45 executes various data processes to control the entire operation display unit 9, and a control program for the CPU 45 is stored in the ROM 49 in advance and The processing data of the CPU 45 is temporarily stored in the RAM 50.

The various I / Os 51 are composed of parallel input / output elements (not shown) and the like, and process signals input from switches and signals output to lamps. The communication processing device 52 is composed of an element for internal communication, and processes various signals communicated with the system control unit 11.

The CG 47 is formed of a ROM or the like in which character data is stored in advance and outputs character image data according to a code. Further, the memory processing unit 48 is adapted to temporarily store the image data input from the image editing unit 12, and the image data is displayed and output on the LCD module 44 by the panel control unit 46. It has become. Further, when an operation screen is displayed and output on the LCD module 44, the keyboard panel 43 detects the manual operation of the operation keys on the operation screen and the panel control unit 46 recognizes it.

Here, a state in which the operation screen in the normal mode is displayed on the operation display unit 9 is illustrated in FIG. 8, and items that can be designated by manual operation of the operation keys on this operation screen will be described. Although typical functions of various operation keys will be described here, a specific operation key is combined with another operation key to realize a plurality of functions.

First, the coordinate designation key 53 is an operation key for setting the absolute coordinates of the sheet body of the electronic blackboard body 2, and for example, the display key 54, the print key 55, and the ten key 56.
By combining with, the display position and copy position of the sheet can be set. The create key 57 is an operation key for designating image data such as black-and-white inversion, mirror processing, vertical rotation, etc. when displaying or printing the image data, and as will be described later in detail, this designation key 57 is used. The operation screen of the create mode is displayed by the operation display unit 9
Is displayed.

The memory erase key 58 is used for the image storage unit 1
4, which is an operation key for designating the erasing of the image data stored, and is combined with an ID (Identification) key 59, a coordinate key 60, and the ten key 56 described later to specify the image data to be erased. The sheet erasing key 61 is an operation key for designating the erasing of the written image of the sheet body, and by combining with the coordinate key 60 and the ten-key 56, the position of the sheet body for erasing the image can be specified. . The edit setting key 62 is an operation key for setting the edit setting mode as the operation mode, and the operation screen of the operation display unit 9 is also changed to the edit setting mode setting screen (not shown) by this manual operation.

The magnification key 63 is an operation key for setting the magnification of the image data when the image data is read from the image storage unit 14 and printed on the sheet by the printing unit as described above. Is the numeric keypad 56
Is set by. The ID key 59 is the numeric keypad 56.
Is an operation key for designating the ID number of the image data stored in the image storage section 14 in combination with the display key 54 and the print key 55 to specify the image data to be displayed or printed. it can.

The density key 64 is an operation key which is combined with the numeric keypad 56 to set the print density of the image data, and when combined with the print key 55, the print density of the printer section 10 can be changed. The coordinate key 60 is an operation key that is combined with the numeric keypad 56 to specify the coordinates of the image data stored in the image storage unit 14, and can be combined with the display key 54 or the print key 55 to display or print. The image data to be processed can be specified.

The number-of-sheets key 65 is an operation key which is combined with the print key 55 to set the number of printed sheets of the printer section 10. The number of printed sheets is set by the ten-key 56. The C (Clear) key 66 is an operation key for canceling various designations and clearing the settings, and the S (S)
The top) key 67 is an operation key for designating suspension or suspension of various operations such as image printing by the printer unit 10 or the printing unit, image erasing by the cleaner unit, and the like.

The print key 55 is an operation key for designating that the image data stored in the image storage unit 14 is printed on the printing paper by the printer unit 10, and the sheet key 68 is the image key storage unit 14. It is an operation key for designating printing of the image data stored in step 3 on the sheet body by the printing unit. The display key 54 is an operation key for designating that the image data stored in the image storage unit 14 is displayed on the operation display unit 9, and the OP (O
The peration) key 69 is an operation key for setting a setting value for erasing when the written image of the sheet body or the stored image of the image storage unit 14 is erased.

A display area 70 for displaying and outputting the set numerical value is provided beside the operation keys for setting the numerical values such as the magnification key and the ID key 59.

When the OP key 69 is manually operated while the normal mode operation screen is displayed on the operation display section 9 as described above, the operation mode is changed to the OP mode as illustrated in FIG. After switching, the operation display unit 9 displays the OP mode operation screen.

Therefore, in the OP mode operation screen, the operation screen key 71 is an operation key for designating the return of the operation mode to the above-mentioned normal mode, and the sheet erasing key 72 automatically operates the cleaner unit. This is an operation key for setting the sheet erasing mode, which is the operation mode to be activated. A power-on key 73 is an operation key for designating that the operation timing of the cleaner unit in the sheet erasing mode is set to power-on, and a power-off key 74 powers off the operation timing of the cleaner unit in the sheet erasing mode. This is an operation key that specifies that time is set.

The memory erasing key 75 is an operation key for setting a memory erasing mode which is an operation mode for automatically erasing the image data of the image storage section 14, and the timing of erasing data in this memory erasing mode. Can be set with the power-on key 73 and the power-off key 74 at power-on and power-off. The # key 76 is an operation key for designating confirmation of the above-mentioned mode setting and the C key 77 is an operation key for designating cancellation of the above-mentioned mode setting.

Further, an FNO (Facsimile Number) key 78
Is an operation key for designating registration of a facsimile number, and the facsimile number is set by the ten key 79, the # key 76 or the C key 77.

Here, the main body power source 8 of the electronic blackboard main body 2
The structure of 0 will be described below with reference to FIG. First, an external AC (Alternating Current) power supply (not shown)
The first and second power lines 81 and 82 provided in parallel are connected to an internal DC (Direct Current) power source (not shown). A manual power switch 83 and a contact 84 of a second relay (not shown) are sequentially provided. A coil 85 of a first relay (not shown) is connected to the first power line 81 between the power switch 83 and the contact 84.
And a contact 86 of a third relay (not shown) is provided on the second power line 82. The first to third relays described above are connected to various I / O 35 of the system control unit 11.

Therefore, the main body power supply 80 is switched on and off by manual operation of the power switch 83. That is, when the power switch 83 is turned on while the power is off, the contact 86 of the third relay is closed and the contact 84 of the second relay is opened. Further, since the coil 85 of the first relay is energized, the contacts of the first relay connected to the various I / Os 35 of the system control unit 11 are reversed, which causes the system control unit to be reversed. 11 can recognize that the main body power supply 80 is turned on.

Therefore, the electronic blackboard system 1 of this embodiment
When the sheet erasing mode is set in advance as described above, the system control unit 11 which is the erasing control means detects that the main body power supply 80 is turned on by the manual operation of the power switch 83, and this system control The part 11 drives the cleaner unit. In addition, in such a sheet erasing mode, in addition to the above power-on,
Since the power can also be set to off, in this case, the cleaner unit is activated when the system controller 11, which is an erasing control means, detects the turning off of the main body power 80 by the manual operation of the power switch 83.

The electronic blackboard system 1 of this embodiment is
When the sheet erasing mode is set as described above, the system control unit 11 determines whether the main body power supply 80 is on or off.
Becomes an operation mode for driving the cleaner unit, but when the sheet erasing mode is released, the main body power supply 80
The system control unit 11 enters an operation mode in which the cleaner unit is not driven when the switch is turned on or off.

Further, the electronic blackboard system 1 of this embodiment is
When an image is printed on the blackboard surface by the printing unit of the electronic blackboard body 2, if the image is printed on the blackboard surface by the printing unit in advance, the cleaner unit controls the image by the system control. The data is erased under the control of the section 11.

That is, when an image is printed on the blackboard surface by the printing unit of the electronic blackboard main body 2, this is stored in the RAM 33 of the system control unit 11 together with the position of the image. When printing an image on the surface, the system control unit 11 refers to the stored contents of the RAM 33 and determines whether or not there is a previously printed image. Therefore, when an image is printed in advance, the cleaner unit erases the image, the printing unit starts printing the image, and the contents stored in the RAM 33 are also erased.

Furthermore, the electronic blackboard system 1 of this embodiment
When the printing unit of the electronic blackboard body 2 prints an image on the blackboard surface as described above, if the printing unit has not printed the image in advance, the printing control means is Under the control of the system control unit 11, the sheet reading unit 8 reads the blackboard surface, and when it detects that there is no image on the blackboard surface, printing by the printing unit is started.

At this time, when the sheet reading unit 8 reads the blackboard surface and detects that there is an image, the image data read by the sheet reading unit 8 is printed on the printing paper by the printer unit 10 or the printer system 5. After printing out, the cleaner unit is driven to erase the image, and printing by the printing unit is started.

In the electronic blackboard system 1 of this embodiment having such a configuration, image data read by the sheet reading unit 8 from the image written on the blackboard surface of the electronic blackboard main body 2,
The image data read by the scanner system 4 from the image described in the document, the image data externally facsimile-transmitted to the modulation / demodulation unit 3, the image data output from the personal computer 6, and the image data read from the HD by the HDD 7 are electronically stored. It can be stored in the image storage unit 14 of the blackboard body 2.

The image storage unit 14 of the electronic blackboard body 2
Printing the image data stored in 1. on the blackboard surface of the electronic blackboard main body 2 by the printing unit, printing on printing paper by the printer unit 10, displaying on the operation display unit 9,
Printing can be performed by the printer system 5, facsimile transmission to the outside by the modulation / demodulation unit 3, output to the personal computer 6, and storage in the HD by the HDD 7.

Furthermore, the electronic blackboard system 1 of this embodiment
When an image is written on the blackboard surface of the electronic blackboard body 2 with a printing unit or the like, the operator can manually operate the operation display section 9 to erase the image on the blackboard surface with the cleaner unit. By doing so, it is not necessary for the user to manually erase the image written on the blackboard surface, so the burden on the user can be reduced.

Further, the electronic blackboard system 1 of this embodiment is
If the sheet erasing mode is set in advance as described above, when the main body power supply 80 is turned on by manually operating the power switch 83 of the electronic blackboard main body 2, the system control unit 11
The cleaner unit driven by automatically cleans the blackboard surface of the electronic blackboard body 2.

By doing so, when the user turns on the main body power supply 80 of the electronic blackboard main body 2, the image previously written on the blackboard surface is automatically erased, so that the image written on the blackboard surface is deleted. Users don't have to manually erase,
The burden on the user can be reduced.

However, when the image on the blackboard surface is automatically erased by turning on the power of the electronic blackboard main body 2 as described above, it is necessary, for example, when the use of the electronic blackboard system 1 is temporarily suspended and restarted. There is a concern that the image will be erased.

Therefore, in order to deal with such a problem,
In the electronic blackboard system 1 of the present embodiment, when the sheet erasing mode is set as described above, the system control unit 11 drives the cleaner unit when the power is turned on, but when the sheet erasing mode is released, the power is turned on. The system controller 11 does not drive the cleaner unit when it is turned on.

That is, when the use of the electronic blackboard system 1 is temporarily suspended and restarted, the sheet erasing mode can be canceled to prevent the necessary images from being automatically erased. .

Next, as the main operation of the electronic blackboard system 1, the image data read by the scanner system 4 from the image described in the original is printed by the printing unit on the blackboard surface of the sheet body of the electronic blackboard body 2. The processing operation in the case of doing so will be sequentially described in detail below.

First, when the user specifies the start of image copying by manually operating the operation display unit 9 and then sets the image reading range, density, and density, a command corresponding to this is issued from the operation display unit 9 to the system control unit. 11 is output. Then, the system control unit 11 outputs the image reading range, density, and density commands to the scanner controller 21 of the scanner system 4.
The image scanner 20, which is controlled according to a command, reads the image of the document. Therefore, this scanner system 4
The image data that is photoelectrically converted from the image and output is output to the image editing unit 12, transferred from the image editing unit 12 to the image storage unit 14, and stored in the image storage unit 14.

When all the image data are stored in the image storage unit 14 in this way, the system control unit 11
Causes the image storage unit 14 to output image data line by line to the image editing unit 12. Therefore, this image editing unit 12
Executes various processes such as image density conversion and image density conversion of the image data, and outputs the image data for which such processes are completed to the print control unit 13.

At this time, the system control unit 11 outputs the command for starting scanning and the control signal to the lateral movement control unit 16, so that the lateral movement control unit 16 outputs the drive pulse at the timing synchronized with the control signal. Output to the drive motor. Therefore, since this drive motor is driven at a speed corresponding to the drive pulse, the printing unit laterally moves on the blackboard surface of the sheet body at a predetermined speed.

At this time, the print controller 13 outputs the image data from the image editor 12 and the control signal from the system controller 11 as described above.
The printing operation of the printing unit is controlled according to these control signals and the image data.

As described above, since only one line of image data is printed on the blackboard surface of the sheet body, the system control unit 11 controls the vertical movement control of the scan start command and the control signal after the printing of one line is completed. It is output to the unit 17. Then,
Since the vertical movement control unit 17 outputs a drive pulse having a number of pulses synchronized with the control signal to the drive motor, the drive motor is driven in response to the drive pulse, and the printing unit moves on the blackboard surface of the sheet body by a predetermined interval. To move vertically.

Image data is printed on the blackboard surface of the sheet body by repeating the above-described horizontal movement of the printing unit and vertical movement. In addition,
Since the printing unit reciprocates horizontally on the blackboard surface, by reversing the output order of the image data with the odd lines and the multiple lines, the printing unit can perform the image with the forward lines of the odd lines and the backward lines of the multiple lines. It is designed to print.

In the electronic blackboard system 1 of this embodiment, the image data read by the scanner system 4 from the image described in the original as described above is printed by the printing unit on the blackboard surface of the sheet body of the electronic blackboard body 2. When printing, if an image has been previously printed on the blackboard surface by the printing unit, this image is automatically erased by the cleaner unit.

By doing so, when the image is printed by the printing unit, it is not necessary for the user to manually erase the image previously written on the blackboard surface, so that the burden on the user can be reduced. Therefore, since the image is not printed by the printing unit on the image written on the blackboard by the printing unit, the image can always be printed well.

Furthermore, when an image is printed on the blackboard surface by the printing unit of the electronic blackboard body 2 as described above, if the printing unit has not printed the image in advance on this blackboard surface,
The sheet reading unit 8 reads the blackboard surface under the control of the system control unit 11, and when it detects that there is no image on the blackboard surface, printing by the printing unit is started. When the sheet reading unit 8 reads the blackboard surface and detects the presence of an image, the printer unit 10 or the printer system 5 prints out the image data read by the sheet reading unit 8 on a printing sheet, and then the cleaner. The unit is driven to erase the image, and printing by the printing unit is started.

By doing so, even when an image is manually written on the blackboard surface, it is possible to prevent the printing unit from printing the image overlaid on this image, so that the image is always printed well. Since it is not necessary for the user to manually erase the image described in advance on the blackboard surface, the burden on the user can be reduced. Moreover, since the image to be erased can be copied and saved on printing paper,
The contents of the erased image can be easily confirmed, and when the erased image is required, the image on the printing paper can be read by the scanner unit 4 or the like to be restored on the blackboard surface.

Therefore, the processing operation when the image data read by the sheet reading unit 8 from the image written on the blackboard surface of the electronic blackboard main body 2 is printed on the printing paper by the printer unit 10 of the electronic blackboard main body 2 will be described below. Will be described in order.

First, when the user manually designates the start of image copying by operating the operation display unit 9 and then designates the read page and the read range of the sheet body, the commands corresponding to these designations are issued from the operation display unit 9. It is output to the system control unit 11. Then, the system control unit 11 causes the rolling control unit 15
Since the control signal is output to the sheet reading unit 8 or the sheet reading unit 8, the sheet reading unit 8 sequentially reads the image of the predetermined position of the sheet body that is sequentially rolled by the rolling control unit 15. Therefore, the image data photoelectrically converted and output by the sheet reading unit 8 is output to the image editing unit 12, transferred from the image editing unit 12 to the image storage unit 14, and stored in the image storage unit 14. It

In this state, the system control unit 11 communicates with the printer unit 10, and when a print enable signal is received from the printer unit 10, the image data stored in the image storage unit 14 is read out by the image editing unit 12. . Therefore, the image editing unit 12 executes various processes such as image density conversion and image density conversion on the image data, and outputs the image data that has undergone such processes to the printer unit 10. Then, the printer unit 10 prints out the image data output from the image editing unit 12 and the required number of image data from the system control unit 11 on the printing paper.

Next, the processing operation in the case of printing the image data read by the scanner system 4 from the image written on the original on the printing paper by the color printer 22 will be sequentially described in detail below.

First, the processing operation when the image data is read from the original by the scanner system 4 and stored in the image storage unit 14 of the electronic blackboard main body 2 is the same as the above-mentioned case, and the description thereof will be omitted. Then, all the image data is stored in the image storage unit 14.
When the print data is stored in the color printer 22, the system control unit 11 communicates with the color printer 22, and when the print enable signal is received from the color printer 22, the image editing unit 12 reads the image data stored in the image storage unit 14. Therefore, the image editing unit 12 executes various processes such as image density conversion and image density conversion on the image data, and outputs the image data that has been subjected to such processes to the color printer 22. Then, the color printer 22 prints out the image data output from the image editing unit 12 and the required number of image data from the system control unit 11 on the printing paper.

Next, as described above, the scanner system 4
The processing operation when the image data read by the sheet reading unit 8 and stored in the image storage unit 14 is transmitted by the modulation / demodulation unit 3 to an external facsimile or an electronic blackboard device (both not shown) in sequence is described in detail below. I will describe.

First, when the user manually specifies the start of image transmission by operating the operation display unit 9 and then specifies the ID number of the image information or the telephone number of the destination, the commands corresponding to these specifications are displayed. Output from the unit 9 to the system control unit 11. Therefore, since the system control unit 11 transfers the image data stored in the image storage unit 14 to the image editing unit 12, the image editing unit 12 compresses the image data and outputs it to the modulation / demodulation unit 3. Then, this modem unit 3
Encodes image data into a facsimile signal and outputs it to a telephone line (not shown), so that the facsimile signal is transmitted to an external facsimile or an electronic blackboard device.

When a facsimile signal is transmitted from an external facsimile or an electronic blackboard to the modulation / demodulation unit 3 via this telephone line, the modulation / demodulation unit 3 decodes the facsimile signal into image data. After being decompressed by the editing unit 12, it is stored in the image storage unit 14.

The electronic blackboard system 1 of this embodiment is
Image data read by the sheet reading unit 8 from the blackboard surface,
Image data externally received by the modulator / demodulator 3, image data output by the personal computer 6, image data stored in the HD of the HDD 7, and the like can be printed on the blackboard surface of the electronic blackboard body 2 by the printing unit. .

Therefore, even in such a case, if an image is previously printed on the blackboard surface by the printing unit, this image is automatically erased by the cleaner unit, and the image is previously printed on the blackboard surface by the printing unit. If the sheet is not printed, the sheet reading unit 8 reads the blackboard surface and confirms that there is no image, and then starts printing, thereby preventing overlapping printing of images. Furthermore, when the sheet reading unit 8 reads the blackboard surface and detects an image, the read image is printed out on a printing paper by the printer unit 10 or the like, and then the cleaner unit is driven to erase the image. By starting printing by the printing unit, it is possible to prevent overlapping printing of images, and it is possible to save the image to be erased on the printing paper.

[0099]

[0100]

[0101]

According to the first aspect of the present invention, the blackboard printing means for printing out the image data stored in the image storage means on the blackboard surface is provided, and the image erasing means for erasing the image written on the blackboard surface is provided. When the image is printed on the blackboard surface by the blackboard printing means, the deletion control means for deleting the image previously printed on the blackboard surface by the blackboard printing means by the image erasing means is provided. Since it is possible to prevent the blackboard printing unit from printing an image on top of it, there is an effect that an image can always be printed satisfactorily.

According to a second aspect of the present invention, a blackboard reading means for reading an image written on the blackboard surface is provided, and a blackboard printing means for printing out the image data stored in the image storage means on the blackboard surface is provided. When the blackboard printing means prints an image on the blackboard surface when the blackboard reading means reads the blackboard surface and detects that there is no image, the blackboard printing means starts printing. By providing the print control means for controlling, it is possible to prevent the blackboard printing means from superimposing and printing the image on the image printed on the blackboard surface, so that it is possible to always print the image well. Have.

According to the third aspect of the present invention, when the blackboard printing means prints an image on the blackboard surface, the blackboard reading means reads the blackboard surface and detects that there is an image. By providing the means, and when the image erasing means erases the image by the erasing control means, the print controlling means starts the printing by the blackboard printing means, so that the blackboard printing means displays the image on the image written on the blackboard surface. Since it is possible to prevent overlapping printing, it is possible to always print an image satisfactorily.

According to the fourth aspect of the present invention, when the blackboard printing means prints an image on the blackboard surface and the blackboard reading means reads the blackboard surface and detects that there is an image, the blackboard reading means reads the image data. By printing out on the printing paper by the paper printing means, the image to be erased can be copied and stored on the printing paper, so that the erased image can be restored when necessary. Have.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a circuit structure of an electronic blackboard system which is an embodiment of an electronic blackboard device of the present invention.

FIG. 2 is a block diagram illustrating a circuit structure of a sheet reading unit that is blackboard reading means.

FIG. 3 is a block diagram illustrating a circuit structure of an image storage unit which is an image storage unit.

FIG. 4 is a block diagram illustrating a circuit structure of a printer unit that is a paper printing unit.

FIG. 5 is a block diagram illustrating a circuit structure of a system control unit that is an erase control unit and a print control unit.

FIG. 6 is a block diagram illustrating a circuit structure of an image editing unit.

FIG. 7 is a block diagram illustrating a circuit structure of an operation display unit.

FIG. 8 is a plan view exemplifying a state in which a normal mode operation screen is displayed and output on the operation display unit.

FIG. 9 is a plan view exemplifying a state in which an OP mode operation screen is displayed and output on the operation display unit.

FIG. 10 is a circuit diagram illustrating a circuit structure of a power supply portion.

[Explanation of symbols]

1 Electronic blackboard device 4 Document reading means 5,10 paper printing means 8 Blackboard reading means 11 Erase control means, print control means 14 Image storage means

Continuation of the front page (56) Reference JP-A-5-38896 (JP, A) JP-A1-263099 (JP, A) JP-A-4-278396 (JP, A) JP-A-2-104165 (JP , A) JP-A-6-48091 (JP, A) JP-A-63-131655 (JP, A) JP-A-63-247098 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB) Name) H04N 1/00-1/00 108 B43L 1/00-12/02 B43L 15/00-27/04

Claims (4)

(57) [Claims] 1. A blackboard surface on which an image is written, blackboard reading means for reading the image on the blackboard surface, original reading means for reading the image on the original, and the original reading means and the blackboard reading. Image storage means for storing the image data read by the means; paper printing means for printing out the image data stored by the image storage means on a printing paper;
The blackboard printing means for printing out the image data stored in the image storage means on the blackboard surface, the image erasing means for erasing the image written on the blackboard surface by the blackboard printing means, and the blackboard printing means. An electronic blackboard apparatus comprising: an erase control unit that erases an image previously printed on the blackboard surface by the blackboard printing unit when the image is printed on the blackboard surface by the image deleting unit. 2. A blackboard surface on which an image is written, a blackboard reading means for reading the image on the blackboard surface, an original reading means for reading the image on the original, and the original reading means and the blackboard reading. Image storage means for storing the image data read by the means; paper printing means for printing out the image data stored by the image storage means on a printing paper;
The blackboard printing means for printing out the image data stored in the image storage means on the blackboard surface, the image erasing means for erasing the image written on the blackboard surface by the blackboard printing means, and the blackboard printing means. An electronic blackboard comprising: a printing control unit that starts printing by the blackboard printing unit when the blackboard reading unit reads the blackboard surface and detects that there is no image when printing an image on the blackboard surface. apparatus. 3. When the blackboard printing means prints an image on the blackboard surface, the blackboard reading means scans the blackboard surface and detects that there is an image. 7. The printing control means starts printing by the blackboard printing means when the image erasing means erases an image by the control means.
The electronic blackboard device described in 2 . 4. When the blackboard printing means prints an image on the blackboard surface, when the blackboard reading means reads the blackboard surface and detects that there is an image, the image data read by the blackboard reading means is printed by the paper printing means. The electronic blackboard device according to claim 2 or 3 , characterized in that it is printed out on paper.