JPS62155668A - Electronic blackboard device - Google Patents

Abstract

PURPOSE:To further add to the drawing drawn in the conference of the preceding time by providing a plot head for writing a point or a line in a writing part and plotting information stored in a memory attachable and detachable with respect to a blackboard device on a writing surface. CONSTITUTION:An image sensor disposed on a moving part 4 is a line sensor for reading a Y direction (longitudinal direction) of the writing surface 3 of the blackboard main body 2 once, and all the area of the writing surface 3 is read by moving the moving part 4 in an X direction (horizontal direction). In the moving part 4, a plotter 7 except for the image sensor is provided. In the plotter 7, a felt pen for writing the point or the line or the like on the writing surface 3 is provided, and moves in the Y direction (longitudinal direc tion) on one side of the moving part 4 by a motor and a wire disposed in the moving part 4. By the movement of the plotter 7 in the Y direction and the movement of this moving part 4 in the X direction, the writing of the point or the line to a purpose position is performed. The information stored in a RAM card inserted into a memory inserting port M provided in a front surface part of a control part 8 disposed in a lower part of the blackboard main body 2 is written in the writing surface 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic whiteboard, and more particularly to an electronic whiteboard device having an output means for displaying drawings and the like.

[Traditional technique]

In addition to the function of a conventional blackboard, an electronic blackboard is a device that has the function of copying characters, drawings, etc. written on a writing surface onto paper.

Electronic blackboards generally include an image sensor that reads the characters and drawings on the blackboard, a high-intensity light source that illuminates the writing area during reading, and other optical systems, and an image sensor that scans the writing area. It consists of a motor drive section, and a printer section that outputs the read data on paper. In other words, the electronic blackboard irradiates the writing area with light generated by a high-intensity light source,
The image sensor is moved by a motor drive section, and characters written on the writing section are converted into image data, which is output by a printer.

Compared to conventional blackboards, electronic blackboards have such a copying function, so attendees do not have to copy what was written during meetings, meetings, etc. used in

Since the electronic blackboard described above outputs to a medium different from the writing surface, that is, outputs to paper, there is a problem in that it is not possible to add to drawings drawn at a previous meeting, etc.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide an electronic whiteboard device that can output information stored in a removable memory to a writing section of an electronic whiteboard.

[Key points of the invention]

In order to achieve the above object, the present invention provides a moving means that moves relatively over a writing part of an electronic blackboard, an image sensor for reading information written on the writing part, and a plot for writing dots or lines on the writing part. The electronic blackboard is provided with a memory that stores information read by the image sensor and is removable from the blackboard device, and the plot head plots the information stored in the memory on a writing surface. It was characterized by

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIG. 2 is an external view of a blackboard device according to an embodiment of the present invention. An image sensor that reads all the image data of the area of the writing surface 3 of the blackboard main body 2 provided on the legs 1 of the blackboard, that is, the information written with a felt-tip pen, etc., is mounted on the writing surface 3 side of the moving part 4 (in FIG. is provided on the back side of the moving section 4). The image sensor is a line sensor that reads the writing surface 3 in the Y direction (vertical direction) at once, and the moving part 4 reads the writing surface 3 in the X direction (horizontal direction).
By moving to , the entire area of the writing surface 3 is read. The moving unit 4 is moved along rails 5.6 provided at the upper and lower parts of the blackboard body 2 by a motor (not shown) to be described later. The moving unit 4 includes a plotter 7 in addition to the image sensor.
is provided. The plotter 7 consists of a felt-tip pen for writing dots or lines on the writing surface 3 and a solenoid that moves it up and down. Move in the Y direction (vertical direction). Note that the mechanism for moving the block 7 using a motor and wire is the same as the conventional one, so a description thereof will be omitted for the sake of brevity. In the present invention, the plotter 7 is provided in the moving section 4, and the previously read figures and characters on the writing surface 3 are predicted by moving the above-mentioned felt pen up and down (Y direction) and the moving section 4 in the X direction. It is. By moving the moving section 4 in the X direction and moving it in the Y direction by the motor and wire provided in the moving section 4, dots and lines are drawn at the target position. A control unit 8 provided at the bottom of the blackboard body 2 controls this point writing and line writing. By moving the moving unit 4 in the X direction and moving it in the Y direction by the motor and wire provided in the moving unit 4, point writing or line writing is performed at a target position. A section 8 provided at the bottom of the blackboard main body 2 controls this point writing and line writing. Control unit 8
is the numerical value (0 to 9) key on the front panel, the W (write) key to write straight lines etc. on the writing surface, the line key to indicate the line, and the R (to store it in RAM). It has a read) key, a RAM key for writing RAM data on the writing surface, and a movement (△<>) key for moving the plotter position upward, downward, left, right, etc. In addition to the keys, the front panel also has a power switch (SW), a display section consisting of an LCD, a memory insertion slot M for inserting a RAM card, and a print output slot P for outputting printed paper. There is.

FIG. 1 is a circuit configuration diagram of an embodiment of the present invention showing in detail the circuit configuration of the control section 8 described above. Processor circuit (C
PU) 10 is a control unit that controls the blackboard device according to the embodiment of the present invention, and each circuit and drive unit are operated by this processor circuit 10. The processor circuit 10 has a bidirectional pass line B, and includes an X direction rotation memory 11, an X direction unit counter 12, an X direction counter 13, a Y direction rotation memory [4,
A Y-direction unit counter 15 and a Y-direction counter 16 are connected. The key human power section 17 is connected to the bidirectional lotus line B via the input cover sofa 20b, and the S-P conversion section 18 for serial-to-parallel conversion of the output of the image sensor is connected to the bidirectional lotus line B via the buffer 19.20a. buffer 2
The outputs of the lotus lines 0a and 20b are controlled by output enable signals ENI and EN2 output from the processor circuit IO. The output sofa 19 is controlled by the signal a from the timing generation circuit 21, and is connected to the screen RAM 23 via a shift register 22 and a connector XM in addition to outputting to the bidirectional lotus line B described above. The screen RAM 23 is a memory that stores written information in units of one page. The timing generation circuit 21 is the image sensor 2
When reading the written information written on the writing surface 3 by 4,
This is a circuit that controls the image sensor 24, and the control signal output from the timing generation circuit 21 is sent to the driver 25.
It is applied to the image sensor 24 via.

As described above, the image sensor is a sensor that converts the information on the writing surface 3 into image data, and operates under the control of the timing generation circuit 21 to convert the writing information into a signal of 0.1 in units of dots.

Then, the 0.1 signal is applied to the S-P converter 18 and converted into parallel data. The processor circuit 10 outputs an initial signal P, and the timing generation circuit 21 synchronizes with this initial signal P to drive the image sensor 24 for reading the writing surface. Further, an enable signal J is applied to the timing generation circuit 21 from the processor circuit 10, and the timing generation circuit 21 starts a read operation by this enable signal. When reading the data on the writing surface 3, the address counter 26 transfers the data read by the image sensor 24 to the screen RAM 2.
This is a circuit that generates an address to be stored in the timing generation circuit 21, and is cleared by the initial signal P.
Count the number of read locks d that occur. The gate circuit 27 to which the output of the address counter 26 is added receives an address signal for the screen RAM from the processor circuit IO, and the gate circuit 27 receives the two addresses added by the switching signal C output from the timing generation circuit 21. Select the address of the screen RAM23 and connect it to the connector
Output via M. In order to operate the image sensor 24 when reading handwritten data, the timing generation circuit 21 operates, and the output of the address counter 26 is selected by the gate circuit 27 to operate the image sensor 24 and the output of the S-P converter 18 is activated. The signal is applied via the buffer 19 and the connector XM, and the data is stored in the position indicated by the address counter 26. During this reading, the moving section 4 must be moved in the X direction. This moving part 4
The X-direction rotation memory 11, the X-direction unit counter 12, the X-direction counter 13, the X-direction pulse generation circuit 28, the X-direction motor driver 29, and the pulse motor (PM) 30 perform movement control. A capture gate signal G1 is applied to the X-direction rotation memory 11, and the state of leftward and rightward movement is stored. For example, 00 means stop, Ol means right movement, and 10 means left movement. In reading the writing surface 3 described above, 01 is stored because it is a rightward movement. Note that the X-direction rotation memory 11 captures data on the pass line B in response to a capture signal G1 output from the processor circuit 10. The X-direction unit counter 12 is a down counter that counts the clock φ applied from the processor circuit 10 via the AND gate 31. When the processor circuit 10 outputs the data via the rebus line B and the capture signal G2 is output, the X-direction unit counter 12 captures the data output from the processor circuit 10 across the pass line. Then, when a clock φ is added, a down count is performed in response to the clock φ.

The X-direction unit counter 12 sends a borrow signal to the X-direction counter 13, the X-direction pulse generation circuit 28, and the processor circuit 10 when the counter value is "0" or a lock signal ψ is added for I clocks from "0"! . Output. The X-direction unit counter 12 is a circuit that generates a clock for moving one dot in one direction. In order to control the movement in the X direction, the processor circuit 10 sets data in the X direction unit counter 12 by the above-described operation and then turns on the gate control signal n1 to turn on the AND gate 31. By turning on the AND gate 31, a clock φ is added to the counter, and when a specific number, that is, a set number is counted, a signal I0 is applied to the processor circuit 10, and a signal I0 is output to the processor circuit 10 to indicate that a specific time has elapsed. At this time, the signal ■. is also applied to the X-direction pulse generation circuit 28 at the same time, and this signal ■. is added to the X-direction pulse generation circuit 28, so that the X-direction pulse generation circuit 28 rotates the pulse motor 30 by one step via the X-direction motor driver 29. Note that the X-direction pulse generating circuit 28 is supplied with a signal representing the rotation direction from the X-direction rotation memory 11, and rotates the pulse motor in the direction represented by this signal. The output of the X-direction unit counter 12 is further applied to the X-direction counter 13, which detects how many times the pulse motor has been driven in one step rotation in the X direction as described above. That is, (1) Count the signal output from the X-direction unit counter 12 every time the step is rotated once, and when a clock corresponding to the value previously taken in by the take-in signal G3 is added to the X-direction counter 13, the signal I is output. Then, it is output to the processor circuit 10 that the stamp rotation has been performed for that number of times. The same applies to the Y-direction rotation memory 14, the Y-direction unit counter 15, and the Y-direction counter 16. Note that these Y-direction rotation memory 14, Y-direction counter 15, and Y-direction counter 16 also receive data applied from the pass line B using the signal G4. G5.
G6 outputs to the processor circuit IO a signal I2 indicating one step of rotation and a signal I3 indicating completion of one step rotation of the target number (value set in the Y-direction counter 16). Further, the Y-direction pulse generation circuit 32 and the Y-direction motor driver 33 are also the same as in the case of the X-direction.

The pulse motor 30 in the X direction is the moving part 4 in FIG.
The Y-direction pulse motor 31 is a motor that vertically moves the plotter 7, which controls whether or not to write dots or the like when the pen is attached to the writing surface.

Although the Y-direction pulse motor 31 is not shown, it is configured to move the plotter 7 in the vertical direction using a wire. In the case of a conventional electronic whiteboard, since it is only necessary to move the moving unit 4 in the X direction, the moving speed, that is, the time for one step rotation of the pulse motor 30 may be constant.

However, in the case of the present invention, it is not necessary to drive the pulse motor in the Y direction when reading information on the writing surface 3, and for example, when plotting data on the screen RAM 23, the plotter 7 is also moved in the Y direction. Therefore, since the moving speeds in the X direction and Y direction vary depending on the desired operation, these must be constantly controlled. In order to do this, an X-direction unit counter 12, an X-direction unit counter 13, a Y-direction unit counter 15, a Y-direction unit counter 1,
6 is provided.

When reading the information on the writing surface 3, the writing surface must be irradiated with light. This is done by the driver 34 and the light source 3.
5, the light source 35 is driven via the driver 34 during reading, and irradiates the area to be read by the image sensor with light. Although not shown, the light source 35 is also provided in the moving unit 4, and as the light source 35 moves, it illuminates the area where the information of the τ2 section is sequentially read. On the other hand, when writing the data stored in the screen RAM 23 onto the writing surface, the pulse motors 30 and 31 are driven as described above to output data for one step of movement in the X direction each time movement in the Y direction is performed. do. The pen 0N10FF latch 36, driver 37, and solenoid 38 control turning the pen on and off during this output. When outputting the data stored in the screen RAM 23 to the writing section 3, first the gate circuit 2
7 selects the address signal i output from the processor circuit 10. Incidentally, when reading of the writing surface 3 is not selected by the timing generation circuit 21, a switching signal C for automatically selecting the address signal i is outputted. Then, the gate circuit 27 selects the connector XM.
The screen RAM 23 is addressed via. Data at the target position is read out in units of 8 bits (8 dots) using this address. This read signal is taken into the shift register 22 by the latch clock l, and then shifted to the right by the shift clock m (outputted from the processor circuit 10). The shift register 22 is a parallel input, serial output shift register, and 8-bit data is applied to the gate circuit 39 in bit units. The gate circuit 39 selects the output of the shift register 22 when outputting the data stored in the screen RAM 23, and selects the output g of the processor circuit 10 when writing a straight line etc. by key operation.
Select. Note that this selection instruction is given by the processor circuit 10.
This is done by the selection signal output from the. The output of the shift register 22 is selected by the gate circuit 39 under the control of the processor circuit 10 described above, and the output is selected as the pen 0N10FF.
It is captured in latch 36. Then, the data taken into the pen 0N10FF latch 36 is applied to the driver 37,
The solenoid 38 is driven in response to a signal of 0.1 to move the pen up and down.

In the embodiment of the present invention, one column of data in the Y direction, that is, the data stored in the screen RAM 23, is output to the writing surface 3, and then moved by one bit in the X direction to output the next column of data. Output the data and repeat the operation sequentially. The aforementioned Y-direction rotation memory 14, Y-direction unit counter 15, and Y-direction unit counter 15 operate in the Y-direction in response to the output dots.
These are a direction counter 16, a Y-direction pulse generation circuit 32, and a Y-direction motor driver 33.

The embodiment of the present invention has a function of outputting the read contents not only to the writing surface 3 but also to paper. At this time, the screen RAM 23 is accessed with the address value outputted via the gate circuit 27, and data corresponding to the address value is added to the processor circuit 10 via the buffer 20a.

Then, the data is applied to the driver 40 and output to the thermal printer 41 in correspondence with the data, that is, the dots.

Through the above operations, the comparison of the writing surface 3 is imported into the screen RAM 23, and the contents of the screen RAM 23 are transferred to the printer 4.
1 is output.

FIGS. 3(A), 3(B), and 3(C) are flowcharts showing the operation of the present invention described above. The operation will be explained in more detail below using FIG.

The circuit with the configuration shown in Figure 1 starts operating (START)
Then, initialization processing S1 is performed first. This process S1 is, for example, a process for moving the moving section 4 and the plotter 7 to predetermined positions, and a process for setting all other operations to their initial states. Then, key determination processing S2 is performed for data input using the keys. The key determination process S2 is a process in which various pressed keys are determined, and a target process is selected and activated. Although not shown in the figure, the key determination process S2 also has a function to determine the press of a key unrelated to the operation of the present invention and a function to select a process due to a key press error. is not represented. In the key determination process S2, the R key, RAM key, and line key shown in FIG. 1 are determined.

When a line key is pressed, a process S3 is performed in which the next line segment key pressed after the line key is fetched and stored in the buffer 10-2 within the processor circuit 10. Then, a direction key determination process S4 for writing a line on the writing surface 3 is performed.

When the left movement key (<) is pressed and the W (write) key is further pressed, a process of writing a line to the left is performed.

In the embodiment of the present invention, when moving the moving unit 4, the motor rotates in the reverse direction, so first, a process S5 is performed in which a control signal for rotating the motor 30 in the reverse direction is stored in the X-direction rotation memory 11. Subsequently, a process S6 is performed in which a signal for causing a stop state is stored in the Y-direction rotation memory 14. Then X
Direction counter 13 and Y direction counter 16 output signal 12.
Mask processing S7 is performed to ignore even if I3 is added.

Then, a process S8 of storing data representing the unit length of a line segment to be written on the writing sheet in the X-direction unit counter 12, a process S9 of writing line segment data in the X-direction counter 3, that is, writing data representing the length. I do. If the right movement key (>) is selected in the direction key determination process S4, a process SIO is performed to store data for forward rotation of the key 30 in the X direction rotation memory 11, and then the process S6 described above is performed. S7゜S
8. Processing 5ll-314 similar to S9 is performed.

Furthermore, when a key in the up and down direction, such as the up movement key (△), is pressed instead of in the A process S16 is performed to store rotation stop data. When the motor is in the vertical direction, the motor corresponding to the X direction must be stopped, so this process S1
6 controls the stop of this motor 30. Signal I
Processing to ignore even if 0°11 is added, that is, mask processing 3
Process 318 of performing step 17 and storing data representing the unit length in the Y-direction unit counter 15; and processing S1 of storing line segment data in the Y-direction counter 15;
Do 9. Also, when the downward movement key () is pressed, a process S is performed to store normal rotation data in the X direction rotation memory 14.
20, and then processes 521-324 similar to processes 316-S19 are performed. That is, data indicating the rotation direction of the corresponding data is stored corresponding to the direction of movement, and data for stopping the non-corresponding motor is stored. Then, processing is performed to store each dot unit length data and line segment data to be moved. These processes are initial processes for rotating the motor and moving the moving section 4 and plotter 7. After these processes are completed, a process 32 in which signals g, h, n, nz are turned on is performed.
Do step 5. When drawing line segments, you can draw them continuously, so
The signal g is turned on, and the gate circuit 39 outputs a signal for selecting the signal g.

Further, the signal n l + n2 is turned on to turn on the AND gates 31 and 40 so that the clock φ is applied to the X-direction counter 12 and the Y-direction unit counter 15 by turning on nl+n2.

As a result, the X-direction unit counter 12 and the Y-direction unit counter 15 start counting operations. Note that the above-mentioned process S7. S17. S12. In S22, unnecessary signals are masked, so the next determination S22 is performed to mask unnecessary signals.
At 26 and 328, it is selectively determined whether an unmasked signal is added. For example, when the movement is to the left, the signal I0 is added when the X-direction unit counter counts the clocks for the unit length data, so when it is determined (YES) that the signal I0 has been added in the determination process S26, the signal I0 is applied in the X-direction. A process S27 is performed to store the unit length data in the unit counter 12 again, and a process 328 is performed to determine whether or not the signal 1 is applied. Also, the signal ■. If not added (No), this determination process is repeated. The X-direction counter 13 receives the above-mentioned process S9.
The line segment data is stored in the signal I. Since the counter 12 counts down every time the counter 12 outputs, this determination processing 32B continues until the line segment data stored in the X-direction counter 13 becomes zero, for example, until the signal I, no (
NO) and executes from process 326.

Although the movement in the X direction has been described above, movement in the Y direction is similarly performed by determining the signal 12°I3. In the discrimination process, when it is detected that the signal I is input (YES), the signal nI +
A process S29 is performed in which the n2+h signal is turned off, and the process ends. By this processing S29, the AND gate 3
1 and 42 are turned off, and the clock φ is no longer applied to each counter 12 and 15, and the signal I. , II + T
2+'In is also not output, so motors 30 and 31
stops. In the above-mentioned process S25, the signal g is turned on, and the gate circuit 39 selects the signal g according to the signal. During this movement, the pen 0N10FF launch 36 receives the signal indicating that the pen is on. The solenoid 38 is operated via the driver 37, and the pen is turned on. Therefore, as the pen moves during that time, a line is drawn as the pen comes into contact with the writing section 4.

FIG. 4 is a detailed diagram illustrating the present invention when drawing the above-mentioned line. Figure 4 (position as shown in 11, i.e. writing surface 3)
When the moving unit 4 is located on the left side and the plotter 7 is located above the moving unit 4, the line keys and numerical keys (4, 4,
0) If you press the up key or the W key, the fourth
From the position of the plotter 7 shown in Figure (1), the plotter 7 turns on the pen and moves downward, as shown in Figure 4 (2).
Draw a line like the one shown. Further, when the line key, numeric key (6, 0), right movement key, or W key is pressed, the user moves to the right from the position shown in FIG. 4 (2) and draws a line. That is, an L-shaped line can be drawn by operating these keys. In the above-described key operations, the numeric key is a value representing the length of a line to be drawn, for example, in centimeters. In key determination processing S2, when it is determined that the R key has been pressed, data is stored in the screen RAM 23 and print output processing is performed to the thermal printer 41.

Reading of information on the writing surface 3 is performed by moving the moving unit 4 from the left end to the right end in the X direction. In this case, in order to avoid moving in the Y direction,
First, signal 12. A process S30 for masking I is performed, followed by processes 331 to S33 for moving in the X direction. In the above-mentioned operation, in order to write one dot continuously, the X-direction unit data corresponding to one dot is stored in the X-direction unit counter 12, and the motor is rotated in the left and right directions each time the value becomes O. Ta. When reading, one movement corresponding to one sense line must be repeated on the writing surface 3. In the embodiment of the present invention, the horizontal direction of the writing surface 3 is divided into 1200 parts and read, so the value for one line is stored in the X direction unit counter 12.
r1200J will be cents. In addition, left to right direction, ie, normal rotation data is set in the X direction rotation memory 11. After these processes 831 to S33, a process S34 for stopping the Y direction is performed, and then the signal n is turned on (335) and the enable signal j is turned on (S36).
And so. As a result, the X-direction unit counter 12 starts counting, and the timing generation circuit 21 starts controlling the above-described image sensor 24 to read information on the writing surface 3. When one line is read under the control of the timing generation circuit 21, the X direction unit counter 1 is immediately read.
Since the signal I0 is output from 2, the determination process S3 is performed during that time.
7 always signal I. detection is repeated. When the signal I0 is detected (YES), a process 338 is performed to store one line value in the X-direction unit counter 12, and a determination process S39 is performed to determine whether the signal 11 is added. When the signal I is not applied, the determination process S37 is repeated again. Signal 11 is detected when movement in the X direction has been performed 1200 times. Then, each time the line is moved, data for one sense line is taken in. At the time of this acquisition, the gate circuit 27
selects the output of the address counter 26 and writes it to the screen RAM2.
3, the data sequentially addressed and read by the value of the address counter 26 is stored in the screen RAM 23.
is stored in

Since signal 11 is output by this repeated operation (1200 times), it is detected by the discrimination process (YES)
. Since the read operation is complete when this signal is detected, the next step is to disable the enable signal (
S40) Stop the operation of the timing generation circuit 21.

In the embodiment of the present invention, since the data is printed out after reading, the control signal 0 is outputted next, and the control signal ENI which turns on the buffer 20a is outputted.

Furthermore, a process S41 is performed to output a control signal for selecting the address signal i output from the processor circuit 10 to the gate circuit 37, and a process S42 is performed to read the contents of the screen RAM 23.

After processing 343 for converting the read data into data to be printed on a thermal printer, the data is printed on the thermal printer 41 via the driver 40.

Since printing, that is, printing by the thermal printer 41, is performed corresponding to one line, next, a determination process S45 is performed to determine whether or not the processing for one screen has been completed, and if it has not been completed (No.
), the process is performed again from S41. Then, when printing for one screen is finished, the entire process is finished.

In the printing process, the printer automatically operates and prints by outputting 1947 minutes of data to the printer, but writing on the writing screen, that is, plotting, is done by moving the moving unit 4 in the X direction and moving the plotter 7 in the Y direction. It is necessary to control the movement of the pen, as well as the on and off (up and down) of the pen.

When the RAM key is pressed in the determination process S2, the process shown in FIG. 3(C) is performed.

In the embodiment of the present invention, by moving the plotter 7,
The data stored in the screen RAM 23 is output as a dot image. That is, the plotter 7 is moved vertically to output one row of dots, then that row is moved rightward by one dot, and the same movement is repeated.

First, processes 346 to 348 for moving in the Y direction are performed. That is, a count value for one pixel (one dot) is stored in the Y-direction unit counter 15 (S46), and then data for normal rotation is stored in the X-direction rotation memory 14 (S47).
Furthermore, r 800j is stored in the Y direction counter 16 (S4
8) Do. In the embodiment of the present invention, as described above, since the vertical direction is divided into 800 dots, r 800J is stored in the storage process S48. First, since the movement is to be made in the Y direction (vertical direction), a signal indicating a stop is stored in the X direction rotation memory 1 (S49).

The movement in the X direction is stopped, but when one row (up and down) has been printed, it must be moved one dot to the right, so next, the X direction unit counter is set to the number of clocks for one row A process S50 for storing one line value is performed. Furthermore, a process S51 is performed in which a value for moving over the entire area in the X direction, ie, a total line value "1200" is stored. As a result, the movement setting for writing the first column is made. The processor circuit 10 has a counter 1 inside.
0-1, and by this counter shift register 2
It controls the right shift count of 2 and the capture from the screen RAM 23, that is, the lunch clock l and the shift clock m. In order to perform this control, next step S52 is performed in which the counter 1O-1 is set to "0" in order to read out the screen RAM in 8-pin units and shift it to the right in 1-bit serial. Furthermore, the address i for reading the screen RAM 23 from the processor circuit 10 is set (S53), and the control signal O is output (
S54) is performed, and the screen data output from the screen RAM 23 is controlled to be taken into the shift register 22 by the process (the rough clock l is output). A process S55 is performed. Through this process S55, 8 bits (
Since the data of the dot) has been taken in, the shift clock m is then output (S56) and the gate control signal n1 is
(High) is output (S57). Since the first dot data stored in the shift register 22 is output to the gate circuit 39 by the process S56, the g signal is
n, ie, off, and furthermore, the h signal is set to gh, ie, on (55B, 559). Gate circuit 3 by process S59
9 selects the shift register and outputs it to the pen 0N10FF latch 36, so the driver 37 turns on and off the solenoid 38 in response to the input dot. For example, when a dot exists at that position, the solenoid 38 is turned on, the pen contacts the writing surface 3, and a dot is written.

Corresponding to one dot, the Y-direction unit counter 15 generates a signal ■
Since 2 is output, the above-mentioned state is maintained until 12 is detected in the next determination process S60. That is, the determination process 360 becomes NO, and this determination process is repeated. In the determination process 360, if the signal I2 is detected (YES), then the processor circuit 10 outputs the clock signal m again (56I) and causes the gate circuit 39 to output the next data. Then, the process S62 of storing one pixel counter value in the Y-direction unit counter 15 is performed again. Since data is outputted from the screen RAM 23 and taken in to the shift register 22 in units of 8 dots, the next step is to determine whether all of this dot data has been outputted, that is, when the counter 10-1 becomes "8". A process S63 is performed to determine whether or not the process has been completed. Note that the determination process 363 also includes a process of incrementing the counter 10-1 each time this process is executed, and the counter 10-1 is always incremented once before making a determination. When it is determined that it is "8" in this determination, the above-mentioned process S52. S53. S54
．． Processes 364 to S67 similar to S56 are performed, and after processing for outputting the next 8 dots, a determination process S68 is performed to determine whether the signal I3 has been output. Further, this determination process 368 is also performed when the value is not "8" (≠8) in the above-described determination process S63. When there is no signal (3) (No), the above-described process is repeated from the determination process S60. When the processing for the -column position, that is, for one line, is completed by the above-described processing, the Y-direction counter 16 outputs the signal 3, so that it is determined in the determination process S68 that the signal 2 is present (YES). This process moves the moving unit 4 to the right of the -column position and moves the plotter 7 to the top, which is to output the next line. First, process 868
' sets the signal to Lo-, that is, "0".

This signal causes the gate circuit 39 to select the signal g, so that a low signal is applied to the pen 0N10FF latch 36, and as a result, the pen is turned off. Then, 800 is stored in the Y-direction counter (S69), and the signal n is set to the old gh (“1”), and the signal n2 is set to Low (“0”) (S70, 571). The movement to the right for one column is completed. It is determined based on the signal I0 (372). Although not shown,
Since the process S70 in which the signal n is set to 1Ii5h includes the process in which the X direction rotation memory 11 is set to normal rotation,
- After the alignment is moved, there is a determination process S72 (
YES), and a rightward movement of the -column position is detected. −
If the alignment is being moved to the right, the result of determination S72 is No, and this determination S72 is repeated. - When a rightward movement of the column position is detected (YES), the next step is to store one line value in the X-direction unit counter (373), and check whether all movements to the right have been completed. Determination of (
S74) is performed. When the movement of the moving unit 4 in the right direction is completed, the X direction counter 13 outputs a signal! Since , is output, it is determined in the determination process (374) whether or not this signal . Signal 1. When there exists writing on writing surface 3, the signal n is set to Low (S75).
End all processing (END). In the determination process S76, when it is determined that the signal I is absent (No), the next step is to store the data to be inverted in the Y-direction rotation memory, and perform a process S77 in which the signal n1 is set to Low and the signal n2 is set to 11ight. The process of moving the plotter 7 from the bottom to the top is performed. The above-mentioned process S69. In S62, 800 is already stored in the Y-direction counter 16 and the 1-pixel counter value is already stored in the Y-direction unit counter 15. Therefore, in step 377, the pulse motor 31 rotates (reverses) by setting the signal n2 to ligh. )I do. This determination process (378) is then repeated until the determination (378) is made. and discrimination (378
), when it is determined that the signal (2) is present, a process for moving the next one dot is performed, that is, a process for storing one pixel counter value in the Y direction unit counter 15 (S79) is performed. In the embodiment of the present invention, since the movement in both the X direction and the Y direction is in units of dots, the signal I2 is not detected until the movement in the - column position is detected (YES) in the determination process S80. The process of performing step S79 is repeated each time.

Then, when the signal I3 is detected in the determination process S80, Y
A process S82 is performed in which r 800J is stored in the direction counter 16 (S81), and data for normal rotation of the pulse motor 31 is stored in the Y-direction rotation memory. Then, the above-mentioned process 359 is sequentially repeated. That is, FIG. 3(C)
In this step, the data stored in the screen RAM 23 is read out, and the plotter 7 is moved from the top of the device to the bottom to plot dots at the same time. Then, when the - sub-frame is completed, the plotter 7 is moved rightward by one dot (-column width), then moved upward and returned to its original position, and the process of plotting the next column is repeated for one screen. In the embodiment of the present invention, 1200 columns are set with each column being F100 dots, so every time 800 dots are plotted, the process returns to the beginning and plots a total of 1200 columns.

The embodiments of the present invention have been described in detail above.

In the embodiment, the moving unit 4 is provided with a plotter 7, but in the case where the moving unit 4 is not present and the writing sheet is moved, a plotter that moves vertically, for example, is installed near the position where the linear image sensor is provided. It is also possible to provide information on a target writing sheet by vertically moving the plotter and moving the writing sheet.

〔Effect of the invention〕

As described above, the present invention plots image data on the entire writing surface using a moving means for reading written information on an electronic blackboard and a vertical moving means for moving the plotter in the vertical direction. Accordingly, it is possible to obtain an electronic whiteboard device that outputs image data stored in a removable memory to a writing section of an electronic whiteboard.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of an embodiment of the present invention, FIG. 2 is an external view of an electronic whiteboard device of an embodiment of the present invention, and FIG. 3 (A), (B), and (C) are implementations of the present invention. Example Flowchart FIG. 4 is a detailed illustration of the present invention. 3... Writing surface, 4... Moving unit, 7... Plotter, 8... Control unit, 23... Screen RAM. 37...Driver, 38...Solenoid. Patent applicant Casio Computer Co., Ltd. t4I! The real example of the moon is the electronic fu, the selection fort 1° Tato Yizui 1 Figure, IA (2) the troubled area this invention memo 24'5 (3) the mouth time area 4 figure

Claims (3)

[Claims] (1) An electronic device in which a moving means that moves relatively over a writing section of an electronic blackboard is provided with an image sensor for reading information written on the writing section and a plot head for drawing dots or lines on the writing section. The blackboard includes a memory that stores information read by the image sensor and is removable from the blackboard device, and the plot head plots the information stored in the memory on a writing surface. Blackboard device. (2) Claim 1, wherein the moving means moves on a writing surface fixed to the blackboard main body.
The electronic whiteboard device described in Section 1. (3) The electronic whiteboard device according to claim 1, wherein the moving means includes vertical moving means for moving the plotting head in a direction perpendicular to the direction in which the moving means moves.