JPH08315121A - Writing or drawing device - Google Patents

Abstract

PURPOSE: To sequence written or drawn matters which vary in kind over a wide range and facilitate the retrieval based on the writing or drawing sequence by measuring the total writing quantity by various methods and displaying it in graph, numeral, etc. CONSTITUTION: The coordinate values 21 of pen input are detected and a line- thinning process, etc., is performed by a preprocessing function 22. When the unit of a writing quantity is one dot of display, the value of a counter function 23 increases by one every time one coordinate value is outputted from the preprocessing function 22. This output is paired with the corresponding coordinate value by a composing function 27. The composited data are stored in a storage part 24 and used for the display. The display is done divisionally as two parts of inside display and actual display because of an overlap process. The internal display is performed by an internal display function 25. Further, it is held in the overlapping order of the counter value (drawing order). The overlap is stored with this counter value and its output is displayed as the total writing quantity 26 in a graph.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device such as an electronic calculator, a CAD device, an electronic notebook, etc. having a board writing device, an input means and a display screen in an office, a classroom and the like.

[0002]

2. Description of the Related Art A writing or drawing device is a blackboard or whiteboard used in lectures and discussions, a CAD device used in designing, and for personal use, a keyboard, mouse, pen, etc. As a display device for displaying the input in, there are drawing software of an electronic computer, a pen computer, and an electronic notebook. In the case of blackboards that are not digitized, humans need to carefully erase them even if there is no superposition if they want to erase some of the drawn objects.

In the case of an electronic writing or drawing device,
(1) By designating an area, the object drawn in that area is taken out and copied or moved, or (2) the object is a "character", "straight line", "circle", "a block of pictures". , Etc., can be processed by two methods of cutting, copying or moving each of those objects.

However, the method (1) can handle free pictures, writings, and drawn objects, but cannot handle overlapping figures separately. In the method of (2), the overlapping of the objects is free, but the objects of the predetermined shape can be handled only as one lump.

[0005]

The above-mentioned conventional writing or drawing apparatus has the following problems. That is, as the selection and writing using a writing or drawing device progresses, a situation in which the writing or drawing is overlaid on the screen often occurs. In such a case, you have no choice but to either delete all of the overlaps or save both, and specify any part of the overlaps and specify that part as a specific process. It was difficult to attach. In addition, in the writing or drawing process, there are cases where meaningless lines are surrounded by meaningless lines or extraneous writing or drawing objects are mixed in important parts that need to be saved. Separation was difficult unless distinguished at the stage.

An object of the present invention is to provide a means for unraveling the contents of writing or drawing to effectively organize the writing or drawing at the time of selection and debate.

[0007]

According to the present invention, in a writing or drawing apparatus, a pen input device or the like is used for writing or drawing, and at the same time, the order of writing or drawing is the position on the screen of the writing or drawing object. It is also stored in the storage device. In another embodiment, the writing or drawing time is also stored together with the position of the writing or drawing object on the screen, and in addition to the writing or drawing place, order, and time. , Remembering who input from what input path (hereinafter referred to as the input system), calculating the total amount of writing or drawing, and displaying it in graphs, numbers, etc. , By specifying any two points of total writing amount or time,
By making it possible to search what was drawn in the meantime, and by using various image enhancing means to display the search results,
It can be more user-friendly.

[0008]

With a pen input device or the like, a line or the like is drawn at a corresponding position on the display screen, and the number of drawn pixels, the length of the line, or the amount of movement of the pen is measured. The local writing amount is calculated, and thereby the writing or drawing order is calculated in order from the drawn edge to the local writing amount unit. Then, the place and the order are stored as a pair. As a result, each of the local writing amount units of written or drawn objects is uniquely identified.

In another embodiment, the time of drawing is recorded at the same time to uniquely identify each local writing unit even if the time is written or drawn. Can be. Further, by handling a plurality of input systems by distinguishing them according to a specific switching instruction or a difference in input path, it is possible to mix a plurality of writing or drawing columns with the order attached. The total writing amount is calculated by the final value of the order obtained here, or by some monotonically increasing function of the order. Every time the total writing amount is updated, it is displayed in a graph, a number, etc. in real time.

When the searcher sees the data for identifying the above-mentioned writing amount, for example, the display of the total writing amount, and designates two arbitrary values which do not exceed it, or designates two arbitrary times. , A part of writing or drawing having an order or time in between is specified. By various emphasis means
The portion drawn between the two obtained points is highlighted.

[0011]

Embodiments of the present invention will be described below.

FIG. 1 shows an embodiment based on a so-called pen computer, which is a writing or drawing device having a display 11 and a pen input device 12. When a writing or drawing operation is performed on the display surface 11 by the tip of the pen input device 12, the position is sequentially detected and a writing or drawing object corresponding to the screen is drawn. As a means for detecting the position of the pen 12 on the display 11, any commonly used means such as a transparent tablet and a touch panel can be applied. Further, it is possible to provide a function of inputting with light and shade information, line thickness information, etc. by detecting writing pressure, pen speed, etc. Further, the color information can also be input by a method such as distinguishing with a pen or explicitly instructing.

Reference numeral 13 is an example of a graph representing the above-mentioned total writing amount (hereinafter referred to as a total writing amount graph). The darkly painted area represents the total writing amount.

In this embodiment, a data acquisition function for internal operation described in FIG. 2 is added to the function of the pen computer. Reference numeral 110 denotes a pen coordinate detection function, which is a function originally provided in the pen computer itself. Reference numeral 111 is a writing amount unit change detection function, which detects a change in the writing amount unit corresponding to the position change of the pen output by the coordinate detection function 110.
The minimum unit of writing amount is the minimum dot for display, but this can be set to any size. A counting function 112 is provided for accumulating changes in the writing amount unit. Figure 2
FIG. 3 is a block diagram showing an example of an internal operation of the device when performing drawing on the writing or drawing device shown in FIG. 1.

First, when an input is made with the pen 12, the coordinate value 21 of the pen input is paired with a gradation value in the case of multi-gradation, and combined with three gradation values in the case of a color image. It is detected sequentially). The pre-processing function 22 performs processing such as thinning and smoothing. This preprocessing can be omitted when the value of the pen input is displayed as it is. When preprocessing is performed, the coordinate values before processing are referred to as “original coordinate values”, and the coordinate values after processing are simply referred to as “coordinate values” to distinguish them. When the unit of the writing amount is one dot for display, the value of the counter function 23 is incremented by 1 each time one coordinate value is output from the preprocessing function 22. The output of the counter function 23 is paired with the corresponding coordinate value by the synthesizing function 27.
In the case of a color image, a combination of three gradation values is combined. The combined data is stored in the drawing content storage device 24, while the data is also used for display.

The display is performed by two parts, that is, an internal display and an actual display due to the overlap processing. The internal display is executed by the internal display function 25, but here, it is composed of virtual pixels corresponding to each pixel of the actual display unit in a one-to-one correspondence, and the number of states that the virtual pixels can take, that is,
A large capacity is secured. On the other hand, in actual display, the maximum value of the gradation that can be taken is n.

Now, suppose that the pixel value of the coordinate value i of the actual display is ri. When an input with a new coordinate value i and gradation value ai (≤n) is added thereto with the counter value c, c is added to the end of the recorded content of the virtual pixel i for internal display.
Is added. That is, the internal display holds the counter values (drawing order) in the overlapping order. In this way, by holding the counter value, it means that the overlap of writings or drawn objects is completely stored.

On the other hand, the pixel value of the actual display is changed to ai. This corresponds to the pen being opaque. Other display methods are ai + ri (to be exact,
min (ai + ri, n)). This corresponds to the overlap being treated as a mix. Also,
An intermediate overlap that is neither of these is possible. Further, in the case of a color image, it is possible to display it in the same manner by setting all the above gradation values to three-dimensional vectors.

On the other hand, the output of the counter function 23 is displayed as it is as the total writing amount 26 on the total writing amount graph 13 of FIG. Here, as the relationship between the total writing amount and the length of the bar graph, in addition to a simple direct proportional relationship, in order to efficiently display a large amount of writing amount, a method of compressing the past and displaying it, a certain constant It is possible to scroll the part corresponding to the past writing or drawing so that it is not displayed. In addition to the bar graph method, numerical expression, color change expression, or a combination thereof is also possible.

Further, in the above example, the writing amount unit is defined as the number of coordinate values of the writing or drawing object, and the total writing amount is defined as a value obtained by sequentially adding all, but the writing amount unit can be set arbitrarily, for example, In the pre-processing function, original coordinate inputs can be grouped for a certain period of time, and thinning, smoothing, and the like can be performed, and the length of the processed line can be defined as the total writing amount. This method is particularly effective when a line drawing with a constant line width is intended for writing or drawing.
Even when it is necessary to draw with varying line widths, the original coordinate input is first grouped for a certain period of time, and the line thinning process is performed to calculate the line width perpendicular to that line. By adding in order, the total writing amount can be measured.

Further, a characteristic portion of the curve, for example, an extreme value of curvature, an inflection point, or the like may be obtained, and only the number thereof may be counted to obtain the total writing amount. However, in this case, in order to measure each value of the writing amount and the writing or drawing object in a one-to-one correspondence, it is considered that the writing or drawing object is interpolated by a straight line or a prescribed curve between adjacent feature points, or Alternatively, it is necessary to store a plurality of coordinate values as a set for one feature point.

In addition, in the case of a multi-gradation drawing object, if it is appropriate to consider that the darker the writing or the drawing object is, the larger the writing amount is, the gradation value is added as it is to obtain the total writing amount. Can also be It is also possible to measure the total writing amount without detecting the movement amount of the writing instrument during writing or drawing and using it as the total writing amount.

FIG. 3 is a diagram showing how to search for an image by the amount of writing. Further, FIG. 4 is an enlarged view of the portion of the total writing amount graph of FIG. The darkly painted portion of Graph 13 indicates the total writing amount. The searcher directs any two points 41 and 42 of the total writing amount graph 13 (here, a bar graph) by directly using a pen or by inputting numerical values on a keyboard. As a result, the designated two points are displayed on the total writing amount graph. In the present embodiment, as shown by 41 and 42 in FIG. 4, it is assumed that the designated two points are displayed by the triangle mark under the graph, but if the designated two points in the total writing amount are displayed, this Other means may be used. As a result, the written or drawn content corresponding to the order sandwiched between the two points 41 and 42 on the display screen 11 is displayed by the highlighting means such as discoloration or blinking.

As a result of the above instruction, as indicated by reference numeral 31 in FIG. 3, a portion represented by a dark line is emphasized in the entire drawn object. By repeating this operation, it is possible to search for an arbitrary range of the handwritten or drawn object.

As the emphasizing means, various known image processing means such as erasing, blinking the emphasizing portion, changing color, changing brightness (gradation), enlarging, deforming, or displaying at another place. It is possible to do so. On the contrary, it is also possible to add the parts other than the emphasized part to the above-mentioned processing.

FIG. 5 is a block diagram showing an embodiment of the internal operation of the apparatus at the time of image retrieval described in FIG. When two instructions of the total writing amount graph are input, the read portion calculation function 51 calculates the read portion. FIG.
Since the counter value located between the two points is known from the bar graph of No., a set of the counter value and the coordinate data corresponding to the counter value between the two points is obtained from the drawing content storage device stored in the writing or drawing order. All can be output from the drawing content storage device 24 (with a gradation value in the case of a multi-tone image, and with three gradation values in the case of a color image). Those data are first sent to the internal display function 25,
Three values called an internal emphasis target value, an emphasis target value, and a background value are determined in the value of the pixel having the corresponding coordinates of the internal display function.

When the overlap is displayed opaquely, the internal emphasis target value, the emphasis target value, and the background value are determined as follows. It is now assumed that pixel i is being processed. First, all the input data having the coordinates of the pixel i are extracted. On the other hand, in the internal display function 25, as described above, a column of counter values (drawing order) is stored in the overlapping order for each pixel (hereinafter, referred to as a storage column). The two counter values, that is, the counter value of the input data and the column (memory column) of the counter values stored in the internal display function 25 are matched, and those common to them in the memory column are marked. All the counter values marked by this operation (this means all the counter values of the input data to the pixel i because the same counter value as the input data always exists in the storage column) are internally emphasized. It becomes the counter value of the target value, and all the gradation values associated with it are the internal emphasis target values (in the case of a binary image,
All are one).

Next, the tail end of the storage sequence is examined, and if it is not marked, pixel i has a value to be emphasized,
The processing of the pixel i is terminated assuming that there is no background value. On the contrary, if the end of the storage sequence is marked, it is set as the counter value of the emphasis target value. The value of the gradation associated with it is the emphasis target value. In this case, look further at the previous value in the storage column, and if it is marked,
Look one more front. This operation is continued from the end until the marked counter value is broken without being connected. The first time there is no mark at the time of the break, the background value counter value.

The counter value is passed to the writing content storage device, and the gradation value corresponding thereto is again received by the internal display function 25 to determine the background value. Further, if all marks are added up to the beginning of the storage sequence without interruption, the background value is set to none.

The actual display is performed with the emphasis target value and the background value designated by the above operation. The procedure is
This is performed by performing the emphasizing means specified in the portion of the value to be emphasized. At this time, depending on the type of highlighting means such as blinking, it may be necessary to display a drawing object below the drawing object to be emphasized. In that case, the background value is displayed.

Further, when the drawn object in the instructed portion is completely erased, it can be realized by erasing all the counter values of the internal emphasis target values in the stored contents of the internal display function 25. In that case, the new tail of the internal display provided for display is the background value obtained earlier. Along with this, also in the drawing content storage device, the portion corresponding to the counter value of the internal emphasis target value is erased.

In the above emphasizing method, the overlap is opaque, but when the overlap is displayed as a mixture,
The sum of all the internal emphasis target values in the case of the opaque is the emphasis target value, and the background value is the sum of all the values other than the internal emphasis target value. In this case, in order to obtain the background value, the counter values are passed to the drawing content storage device, and the internal display function 25 receives the gradation values corresponding to them again, or from the actual display value. It can also be obtained by subtracting the emphasis target value. When the gradation value exceeds the maximum value as a result of the superposition, the maximum display value is displayed in the actual display, and the two display results may be different. In addition, when subtraction is performed, if the result is a negative value, it is naturally displayed as zero.

In FIG. 6, instead of directly instructing the search as in FIG. 5, for example, the writing amount is designated, and the unit of the designated writing amount is automatically displayed in the writing order or the reverse order. Then, it is a block diagram showing one embodiment of the internal operation when making it possible to search while looking at this display. It attempts to automatically scan and search for writings or drawings.
When the device receives a scan command with the writing amount width, the scanning direction, and the speed specified, the reading portion sequential calculation function 61 sequentially calculates the reading portion,
From the drawing content storage device 24, in order or in reverse order by designation, a set of a counter value (drawing order) and coordinate data (with a gradation value in the case of a multi-tone image, Further, in the case of a color image, it is taken out (with three gradation values), and those data are sent to the internal display function 25, and as in the case of the above-described search, the emphasis target value and the like are determined,
The specified emphasis means is applied to the value.

Now, the settable number taken out at once from the drawing content storage device 24 is called the writing amount width, and the number scanned per unit time is called the scanning speed. For example, assume that the writing amount width is specified as Δw and the scanning speed is specified as v. Also, assume that the total writing amount at this point is W. This time,
The emphasized area at time t from the start of scanning is (vt, vt + Δw) in the case of forward scanning and (W-vt-Δw, W-vt) in the case of backward scanning.
In this example, the scan speed is constant, but it is also possible to change the scan speed in various ways such that the speed increases when the scan command is continuously issued for a certain time or more.

It is also possible to combine only the designated two points in the total writing amount with the combination of the above-described two-point designated retrieval.

FIG. 7 is a schematic diagram for explaining how the screen is displayed during the writing or scanning of the drawn object. In the figure, of the display on the display screen 11, the portion shown by the dark line is the highlighted portion. As the scanning progresses, the emphasized portion of the designated writing amount width moves like 71, 72, 73 in the order of writing or drawing. Further, in the total writing amount graph, more effective scanning can be performed by displaying the portion being scanned. 74 of FIG. 7,
Reference numerals 75 and 76 are triangular marks indicating the portion currently being scanned, and move on the graph as the scanning progresses.

In addition to the above-mentioned retrieval and scanning, by setting so that the color or the like of the writing or drawing changes as the writing amount increases, the writing or drawing order and writing amount You can also make it clear.

FIG. 8 is an appearance of an embodiment in which a plurality of input paths are provided in addition to the embodiment of FIG. 1 and the input system can be switched. The input devices denoted by 81 and 82 are sub-numbered, and the input signals from them can be distinguished as different input systems. They are shown in Figure 8.
It may be input to the same input device as shown in, or users using different devices may be connected by a network, and it does not depend on the spatial distance. .

Further, one input path can be regarded as another input system by the input system switching button as shown by 83. However, the switching button is an example of realization, and any means such as voice, gesture, facial expression, camera of gaze etc., input from a sensor, etc. can be used as long as it is a means to convey the intention of switching to the device. It doesn't matter. The inputs regarded as separate systems are individually ordered and stored. Similar to the case of FIG. 1, 84 is a graph showing the total writing amount, but next to the bar graph, there is a display indicating which input system it belongs to. The display can be switched by the display switching button 85. As another example of displaying the total writing amount, prepare a graph separately for the number of input systems,
When the number of input systems increases during writing or drawing, it is possible to increase the number of graphs displayed at that time.

In the line drawing shown in FIG. 8, the dark line portion 86 is the input from the pen of the input path 1, the thin line portion 87 is due to the input system of the first half of the input path 2, and the striped pattern The line portion 88 indicates that the input is made in the input path 2 after the input system switching button has been pressed once. It shows that it is possible to distinguish them as needed by different emphasis means.

Further, also in this example, as shown in the embodiment according to FIG. 1, the writing or drawing content of each input system can be searched and scanned in the writing order. Further, the overlap processing between different input systems is processed by the above-mentioned internal display function 25 in the same manner as the overlap of the same input system.

Although the drawing time recording function is omitted in the above embodiment, FIG. 9 is a block diagram of the operation of the embodiment using the function of storing the time in addition to the total writing amount in FIG. The figure is shown. As shown at 91, in addition to the counter value of the writing or drawing order, the time is stored in correspondence with the position of the writing or drawing object. It is also possible to stop storing the total writing amount and only store the time.

FIG. 10 shows an example of a method of simultaneously displaying the total writing amount and the time in one graph (hereinafter referred to as the writing amount / time graph). The graph is two-dimensional and the horizontal axis represents time and the vertical axis represents total writing amount. One curve is displayed for each input system along with the progress of writing or drawing. In this graph, the rate of change in the total writing amount is represented by the slope of the graph. For example, it can be seen that the portion indicated by 101 is horizontal and no writing or drawing was performed during that time.
As another example of the writing amount / time graph, it is possible to display the above-described bar graph of the total writing amount by color by time.

By designating two points on this graph, it is possible to search for a writing or drawing object, as in the case of the total writing amount alone. Further, by displaying the time, it is possible to perform a flexible search by using the input user's temporal action such as break, date change, stagnation of writing or drawing as a key. Also, just as we did with the amount of writing,
It is possible to scan depending on the time of day. Also,
In addition to the search and scan, the writing or drawing time can be known at a glance by setting the display means such as the color of the writing or drawing to change according to the time. The method of realizing the internal operation in the above embodiment is an example, and different methods of realizing the same operation are not excluded. Further, in the present embodiment, the present invention has been described with respect to a specific embodiment of writing or drawing by pen input or the like, but the present invention is not limited to these embodiments, and may deviate from the scope of the present invention. Without it, drawing devices, computer graphics, interactive devices for the sequential processing of images,
It can be widely applied to the space in the virtual reality presentation method, the construction of three-dimensional objects, the writing of characters and symbols by a word processor or editor.

The present invention, as described in the embodiments, can order a wide variety of writing or drawing objects by measuring the total writing amount in various ways. Furthermore, by displaying the total writing amount as a graph, numbers, etc., it is possible to easily search by writing or drawing order. Further, the search means based on the two points of the total writing amount makes it possible to realize a free search for writing or drawing objects which overlap and which are not standard. In addition, the process of writing or drawing contents can be automatically traced by scanning in stroke order or reverse order. Further, by storing the input system, a plurality of types of writing or drawing can be distinguished. Further, by changing the display means such as color according to the progress of writing or drawing, the order of writing or drawing can be recognized at a glance. In addition, the search results can be visually viewed by having various emphasis means.

[0046]

According to the present invention, the order is counted in accordance with the writing or drawing input, and the position and the order, or the position and the time are stored as a pair, so that there is an overlap and a non-standard form. You can search for specific writings or drawings by their order.

[Brief description of drawings]

FIG. 1 is an external view of a device having a pen input according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an example of an internal operation when writing or drawing on the apparatus of FIG.

FIG. 3 is a diagram showing a screen display of search results of writing or drawing objects by a total writing amount graph.

FIG. 4 is an enlarged view of the portion of the total writing amount graph in FIG.

5 is a block diagram showing an example of an internal operation at the time of searching for the writing or drawing object shown in FIG.

FIG. 6 is a block diagram showing an example of an internal operation when scanning a writing or drawing object.

FIG. 7 is a diagram schematically illustrating a state of screen display when scanning a writing or drawing object.

8 is an external view of a device of an embodiment in which a switching function of a plurality of input paths and input systems is added to the device shown in FIG.

9 is a block diagram showing an example of an internal operation when a function of storing time is used when writing or drawing on the apparatus of FIG.

FIG. 10 is a graph showing an example of a change in total writing amount with respect to time.

[Explanation of symbols] 11: display surface, 12: pen input device, 13: bar graph showing total writing amount, 110: pen coordinate detection function, 111: change detection function of writing amount unit, 112: counting function, 22: front Processing function, 23: Counter function, 24: Drawing content storage device, 25: Internal display function, 31: Highlighted display, 41: Pointed point, 42: Pointed point, 51:
Readout area calculation function, 61: Readout area sequential calculation function, 71, 72, 73: Highlighted display, 74, 75, 76: Triangle mark indicating the part currently being scanned, 81, 82: Input device, 83: Input System switching button, 84: Graph showing total writing amount, 85:
Display switching button.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaru Takeuchi 2520 Akanuma, Hatoyama-cho, Hiki-gun, Saitama Stock Company Hitachi Research Laboratory (72) Inventor Yoshinori Musa 2520 Akunuma, Hatoyama-cho, Hiki-gun Saitama Inside Hitachi Research Laboratory (72) Inventor Atsushi Hiroike 2520 Akanuma, Hatoyama-cho, Hiki-gun, Saitama Stock company Hitachi Research Laboratory

Claims (9)

[Claims] 1. A character or symbol, a picture, etc. are drawn, and in a writing or drawing apparatus in which the characters, symbols, pictures, etc. are sequentially displayed, the contents and order of writing or drawing are stored as a pair and stored.
A writing or drawing device characterized by being able to search written or drawn contents by using the order as a key. 2. In a writing or drawing device in which characters, symbols, pictures, etc. are drawn and sequentially displayed, the contents written or drawn and the time when they are written or drawn are stored as a pair. A writing or drawing device characterized in that the written or drawn contents can be searched by using the time as a key. 3. A writing or drawing device, by measuring the total writing amount from a designated point in time, and displaying it by a graph, a number, etc., so that the search can be performed in accordance with the writing or drawing order. 2. The writing or drawing device described in 2. 4. The total writing amount is the area of a written or drawn portion, the total length of a line after thinning processing, or
The total brightness or density of the writing or drawing, or
The writing or drawing apparatus according to claim 3, wherein the measurement is performed according to a moving distance of the writing instrument. 5. By designating any two points of the total writing amount or any two points of the writing or drawing time, the written or drawn portion in the meantime is emphasized, separated, deleted, or extracted by means. The writing or drawing device according to claim 3, which can be displayed, displayed, and taken out. 6. An emphasizing, separating, deleting and extracting means,
The writing according to claim 5, which has means for extinguishing, blinking, discoloring, changing the brightness of, or enlarging, variously deforming, or displaying another part on the corresponding part or conversely the part other than the corresponding part, or Drawing device. 7. According to a specified condition, it is possible to scan the written or drawn input in the order of input or in the reverse order, and to sequentially scan the place being scanned with an arbitrary writing amount width or time width, The writing or drawing apparatus according to claim 1 or 2, wherein a portion corresponding to a designated condition can be displayed and retrieved by means of highlighting, separating, deleting, and retrieving means. 8. The writing or drawing apparatus according to claim 1 or 2, wherein a display method such as a display color is automatically changed in accordance with the amount of writing or the time in accordance with the progress of writing or drawing. A writing or drawing device that can be set to. 9. An emphasizing, separating, deleting and extracting means for separately storing a portion drawn by a plurality of writing instruments, or particularly a portion before and after a point where a user instructs switching, as a separate system. The writing or drawing device according to claim 1 or 2, wherein any number of arbitrary systems can be simultaneously displayed and taken out by associating each system with each system.