JPH0865432A - Electronic blackboard device - Google Patents

Abstract

PURPOSE: To start a succeeding job quickly by providing an operation control means using an image erasure means to erase an image on a blackboard face when a time without data entry exceeds a preset reference time so as to erase the image of the blackboard face automatically when the electronic blackboard device is left unused. CONSTITUTION: The device is provided with an image storage means 14 storing image data, paper print means 5, 10 printing out the image data stored by the image storage means 14 onto print paper, an image erasure means erasing the image described on the blackboard face and an operation control means 11 allowing the image erasure means to erase the image on the blackboard face when a time without data entry exceeds a preset reference time. Then the image described on the blackboard face is automatically erased by allowing the operation control means 11 to use the image erasure means to erase the image on the blackboard face when a time without data entry exceeds a preset reference time.

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, Japanese Patent Laid-Open No. 61-189063 and Japanese Patent Laid-Open No.
Japanese Patent Laid-Open No. 5-14564 proposes to provide a cleaning mechanism for erasing an image written on the blackboard surface in an electronic blackboard device. More specifically, the electronic blackboard device disclosed in the above publication is provided with a blackboard surface by stretching a wide and endless sheet body in a flat plate shape so as to be rollable, and is separated from the blackboard surface. A cleaning mechanism is provided that allows the cleaning member to be brought into and out of contact with the sheet body at a position.

In this way, since the image on the blackboard surface can be erased by the cleaning mechanism when the user manually operates the predetermined switch, it is necessary for the user to manually erase the image on the blackboard surface. Therefore, the burden on the user can be reduced.

Further, JP-A-62-49761 and JP-A-2-24
The electronic blackboard device disclosed in Japanese Patent No. 8298, etc. is designed to print the time and date when the image on the blackboard surface is read and printed out on a printing paper.

Further, Japanese Patent Laid-Open No. 2-57054 and Japanese Patent Laid-Open No. 3-57054
The electronic blackboard device disclosed in Japanese Patent No. 237865 and the like enables facsimile communication of image data and the like by upgrading the system with a personal computer.

[0007]

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, in the electronic blackboard device disclosed in the above publication, the user needs to manually operate a predetermined switch in order to operate the cleaning mechanism, and the cleaning mechanism is automatically operated at an appropriate timing. Since this is not possible, the user operation is complicated.

[0009] For example, JP-A-62-49761 and JP-A-2-
The electronic blackboard device disclosed in Japanese Laid-Open Patent Publication No. 248298 has a clock for detecting the time and date, but it has not been proposed to automatically operate the cleaning mechanism by utilizing the clock.

Similarly, JP-A-2-57054 and JP-A-3-57054.
The electronic blackboard device disclosed in Japanese Patent No. 237865 and the like has been systemized by a personal computer, but it has not been proposed to automatically operate the cleaning mechanism using this.

[0011]

According to the first aspect of the present invention,
An image is written on the blackboard surface, blackboard reading means for reading the image on the blackboard surface is provided, and image storage means for storing the image data read by the blackboard reading means is provided. A paper printing means for printing out the stored image data on a printing paper is provided, and an image erasing means for erasing the image written on the blackboard surface is provided, and the time without data input exceeds a preset reference time. Then, an operation control means for erasing the image on the blackboard surface by the image erasing means is provided.

According to a second aspect of the present invention, in the first aspect of the invention, when the operation control means erases the image on the blackboard surface by the image erasing means, the blackboard reading means reads the image data from the blackboard surface to form an image. It is stored in the storage means.

According to a third aspect of the invention, in the first aspect of the invention, the reference time of the operation control means is variable.

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

[0015]

According to the invention described in claim 1, when the time when there is no data input exceeds the preset reference time, the operation control means erases the image on the blackboard surface by the image erasing means. Deleted images automatically.

According to a second aspect of the present invention, when the operation control means erases the image on the blackboard surface by the image erasing means, the blackboard reading means reads the image data from the blackboard surface and stores the image data in the image storing means. Save the image.

According to the third aspect of the invention, the reference time of the operation control means is variable, so that the timing of automatically erasing the image on the blackboard surface is varied.

[0018]

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 body 2 is mechanically 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 of 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 which is an operation control means for executing various controls and an image editing section 12 which edits image data, as shown in FIG. The image editing unit 12 and the system control unit 11 are connected to each other, and the operation display unit 9, the print control unit 13 that controls the printing operation of the printing unit, the sheet reading unit 8, and the printer unit 10 are connected. It is connected to the scanner system 4 and the image storage unit 14 which is an image storage unit for storing 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 printer, a vertical movement control unit 17 for driving a drive motor (not shown) for vertically moving the printing unit, and an I / O for controlling input / output of various data.
It is also connected to the (Input / Output) 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.

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.

The scanner controller 21 of the scanner system 4 outputs a command for designating the image reading range, density, color, etc. to the image scanner 20, and the image scanner 20 receives the command. 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.

Further, the sheet reading unit 8 of the electronic blackboard 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, and image data is read by R
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 according to 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. Two
It is designed to control the input / output of data to / from 7.

The print control unit 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 printing 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 main body 2 has a CPU (Central Pro) as shown 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 data processes to control the print control unit 13, the scanner system 4 and the like.
The U32 control program is stored in the ROM 34 in advance. Further, the CPU 32 has a function of measuring time, for example, by counting a reference clock.

The RAM 33 is the electronic blackboard body 2
The processing data of the CPU 32, such as the operation mode, is temporarily stored, and when a main body power supply (not shown) described later is turned off, the connection is switched to a backup power supply (not shown) to hold the stored data. It is like this. Further, a reference time for automatic image erasing, which will be described in detail later, is set in advance in the RAM 33, and the reference time is variable according to an input operation of the operation display unit 9.

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 unit 9 and the like and the signals output to the print control unit 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 unit 12 includes an image editing control unit 38, a color recognition unit 39, a color conversion unit 40, an I / F (Interface) unit 41, a conversion unit 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 from 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 section 9 has a circuit diagram of the CPU 45 and the panel control section 46, as shown 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 the control program of the CPU 45 is stored in advance in the ROM 49, 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 are adapted to process a signal input from a switch or the like and a signal output to a lamp or the like. 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 image data of characters 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, the state in which the operation screen in the normal mode is displayed on the operation display unit 9 is illustrated in FIG. 8, and the 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 that the cleaner unit is operated to erase the image described on the sheet body, and by combining with the coordinate key 60 and the ten key 56, the image is erased. The position can also 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 section 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.
An operation key for specifying the ID number of the image data stored in the image storage unit 14 in combination with the display key 54 and the print key 55, as will be described later in detail. The image data to be processed can be specified.

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. By combining 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-prints key 65 is an operation key which is combined with the print key 55 to set the number of prints of the printer section 10. The number of prints 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 printer unit 10 prints the image data stored in the image storage unit 14 on the printing paper, and the sheet key 68 is the sheet key 68. 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 numerical values such as the magnification key and the ID key 59.

When the OP key 69 is manually operated with the operation screen of the normal mode 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 erase key 72 is described in detail later. The operation key is for setting a sheet erasing mode for automatically operating the cleaner unit as an operation mode. That is, every time the sheet erasing key 72 is manually operated, setting and cancellation of the sheet erasing mode are switched.
In the sheet erase mode setting state, the reference time can be set variably.

Therefore, in the state where the sheet erasing mode is manually set by the sheet erasing key 72, the reference time can be set by the ten keys 79. The reference time can be confirmed by the # key 76 or the C key 77. It can also be canceled. A display area for displaying the set reference time is formed on the side of the sheet erase key 72.

The power-on key 73 is an operation key for designating that the operation timing of the cleaner unit in the above-mentioned sheet erasing mode is set to the power-on time, and the power-off key 74 is for the cleaner unit in the sheet erasing mode. It is an operation key that specifies that the operation timing is when the power is off.

The memory erasing key 75 is an operation key for setting a memory erasing mode for automatically erasing the image data in the image storage section 14 as an operation mode. The execution timing of data erasing in this memory erasing mode is The power-on key 73 and the power-off key 74 can be used to set power-on and power-off.

Also, 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.

Then, the electronic blackboard system 1 of the present embodiment
As described above, when the sheet automatic erasing mode is set in advance as described above, the system control unit 11 repeatedly measures the time when there is no data input in the CPU 32 while the power is on. Further, the system control unit 11 is
The time when no data is input is compared with a reference time preset in the RAM 33, and when the time when no data is input exceeds the reference time, the cleaner unit is driven to erase the image on the blackboard surface. ing.

In the electronic blackboard system 1 of the present embodiment, the time when the operation display unit 9 of the electronic blackboard body 2 is not manually operated is measured as the time when no data is input.

Furthermore, the electronic blackboard system 1 of this embodiment
When the sheet automatic reading mode is set in advance, the system control unit 11 that detects that the time without data input exceeds the reference time drives the cleaner unit and is written on the blackboard surface. When erasing an image, the system control unit 11 reads image data from the blackboard surface by the sheet reading unit 8 and stores the image data in the image storage unit 14 before starting the image erasing.

More specifically, the system control unit 11 drives the rolling control unit 15 and the sheet reading unit 8,
The image data read by the sheet reading unit 8 from the blackboard surface is stored in the image storage unit 14, and then the rolling control unit 15 and the cleaner unit are driven to erase the image written on the blackboard surface. Let

The electronic blackboard system 1 of this embodiment is
The reference time set in the system control unit 11 is variable, and the reference time is changed according to a manual operation of the sheet erase key 72 or the ten key 79 of the operation display unit 9 as described above. Has become.

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 main body 2 by a printing unit or manually, the sheet erase key 61 of the operation display section 9 is manually operated as desired to erase the image on the blackboard surface with the cleaner unit. You can also do it. 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.

Then, the electronic blackboard system 1 of the present embodiment
If the sheet automatic erasing mode is set in advance as described above, the system control unit 11 causes the CPU 3 to operate while the power is on.
In step 2, the time without data input is repeatedly measured, and when the time without data input exceeds the reference time preset in the RAM 33, the cleaner unit is driven to erase the image on the blackboard surface.

By doing so, even if the user does not manually instruct the operation display unit 9 to operate the cleaner unit, the cleaner unit automatically operates and the image on the blackboard surface is erased. Burden is reduced. For example, even if a work such as a meeting is performed by writing an image on the blackboard surface of the electronic blackboard main body 2, if the electronic blackboard system 1 is left without being used, the cleaner unit automatically operates. Since the image on the blackboard surface is erased, the next work can be started quickly.

Furthermore, the electronic blackboard system 1 of this embodiment
If the sheet automatic reading mode is set in advance, the system control unit 11 will erase this image when the cleaner unit erases the image written on the blackboard surface.
Is read and stored in the image storage unit 14.

By doing so, the image that is automatically erased from the blackboard surface by the cleaner unit is automatically saved in the memory of the image storage unit 14, and this is stored in the image storage unit 14.
It can be read from and restored from without loss of important information.

The electronic blackboard system 1 of this embodiment is
Since the reference time set in the system control unit 11 is variably set according to the manual operation of the operation display unit 9 as described above, the user can freely adjust the operation timing of the cleaner unit as desired.

Here, as the main operation of the electronic blackboard system 1 of this embodiment, 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 transferred to the printer unit of the electronic blackboard main body 2. The processing operation when printing on the printing paper in 10 will be sequentially described in detail below.

First, when the user manually designates the start of image copying and then the read page and the read range of the sheet body, 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 described in the original on the blackboard surface of the sheet body of the electronic blackboard main body 2 by the printing unit will be described in order below. To do.

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 to start 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 control unit 13 outputs the image data from the image editing unit 12 and the control signal from the system control unit 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 of the scan start command and the control signal after the printing of this 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 printing by horizontal movement and vertical movement of the printing unit. 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.

Next, the processing operation when the image data read by the scanner system 4 from the image written on the original is printed 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 specifies the start of image transmission by the manual operation of the operation display unit 9 and then specifies the ID number of the image information or the telephone number of the transmission destination, the command corresponding to these specifications is 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 machine 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.

[0091]

According to the first aspect of the present invention, the operation control means for erasing the image on the blackboard surface by the image erasing means is provided when the time during which no data is input exceeds the preset reference time. Even if the user does not manually instruct the operation of the image erasing means, the image erasing means automatically operates to erase the image on the blackboard surface, so that the burden on the user can be reduced. Even if a work such as a meeting is performed by writing an image on the blackboard surface of, the image deletion means will automatically operate and the image on the blackboard surface will be deleted if it is left without using the electronic blackboard device. Therefore, there is an effect that the next work can be started quickly.

According to the second aspect of the present invention, when the operation control means erases the image on the blackboard surface by the image erasing means, the blackboard reading means reads the image data from the blackboard surface and stores it in the image storing means. The image that is automatically erased from the blackboard surface by the erasing means is automatically saved in the memory of the image storage means, so it is possible to restore the image erased from the blackboard surface and prevent important information from being lost. It has a preventable effect.

The invention according to claim 3 has an effect that the user can freely adjust the operation timing of the image erasing means by making the reference time of the operation control means variable.

[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 operation control means.

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 that is both manual operation means and image display means.

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.

[Explanation of symbols]

 1 Electronic Blackboard Device 5, 10 Paper Printing Means 8 Blackboard Reading Means 11 Operation Control Means 14 Image Storage Means

Claims (3)

[Claims] 1. A blackboard surface on which an image is written, a blackboard reading means for reading the image written on the blackboard surface, an image storage means for storing the image data read by the blackboard reading means, and this image storage. Paper printing means for printing out the image data stored in the means on a printing paper, image erasing means for erasing the image written on the blackboard surface, and no data input time exceeds a preset reference time Then, an electronic blackboard device having an operation control means for causing the image erasing means to erase the image on the blackboard surface. 2. The operation control means reads the image data from the blackboard surface by the blackboard reading means and causes the image storage means to store the image data when the image erasing means erases the image on the blackboard surface. Electronic blackboard device. 3. The electronic blackboard device according to claim 1, wherein the reference time of the operation control means is variable.