JPH06149464A - Screen scroll method in stylus - Google Patents

Abstract

PURPOSE:To simulate the movement of paper on a computer system and to improve the operability of a stylus by performing scroll only for a distance from a position where an electronic pen is separated from the stylus to the position where it is brought into contact again. CONSTITUTION:This method is composed of a controller 1 and an input/display device 2 and the controller 1 is composed of a scroll vector calculation means 4 and a scroll means 5. The input/display device 2 is composed of a display device such as a CRT or the like and the electronic pen 3 and constitutes the stylus. Then, from the terminating position TL of a graphic plotted while the electronic pen 3 is in the contact with the stylus to the position where the electronic pen 3 is separated is stored and the screen on the stylus is moved and controlled only for a vector quantity M from the position TL to the position TC where the electronic pen 3 is brought into contact with the stylus again. Thus, since the terminating position of a line is moved to a contact position when the electronic pen 3 is brought into contact again, an operator can continuously plot the line from the position where plotting is easy and the operability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen scroll method for a stylus which is an input and display device of a computer system.

[0002]

2. Description of the Related Art Conventionally, as a device for inputting and displaying images, characters and the like in a computer system, there is a device in which a pointing device called a mouse and an electronic pen and a display device (CRT etc.) are separated. FIG. 2 is a block diagram showing a conventional input / display device. The input device 23 shown in the figure displays the cursor K as a virtual point of interest on the display device 22 according to the position information notified from the pointing device of the mouse 24 or the electronic pen 26, and controls the movement by the control device 21. Met. In this type of device, there are two movement modes of the cursor K, a relative mode and an absolute mode. Relative mode is the cursor K depending on the amount of movement of the pointing device.
Is to move. Absolute mode means tablet 2
The physical position of the electronic pen 26 on the cursor 5 and the cursor K
The positions of 1 to 1 correspond to each other.

Of these modes, the mouse 24 is only in the relative mode due to mechanical limitations. On the other hand, the tablet 25 and the electronic pen 26 are normally in the absolute mode, but it is also possible to simulate the relative mode by software. However, in these devices, the movement of the hand and the cursor K on the display device 22 are
Can not see the movement of at the same time. As a result, there is a problem that the operation is difficult while the user is not accustomed to writing characters and figures. On the other hand, in recent years, a device in which a pointing device and a display device are integrated has appeared. This is called a stylus.

FIG. 3 is a block diagram showing a display / input device using a stylus. The apparatus shown in the figure simulates the writing with ancient paper and pencil by electronically displaying the trajectory of the electronic pen 33 by the operator. That is, the electronic pen 33 is displayed in the display / input area W on the input / display device 32 by the control device 31.
The image is displayed at the position where is touched. As a result, the above-mentioned inconvenience caused by the inability to see the movement of the hand and the display at the same time in the device in which the pointing device and the display device are not integrated is solved.

[0005]

However, the above-mentioned conventional technique has the following problems. That is, the appearance of the stylus shown in FIG. 3 has dramatically improved the operability of input, but has also created a new problem. To clarify this problem, think about how we use paper and pencils to write documents and pictures. That is, when writing a document or a figure, not only the hands and arms are moved, but after the hands and arms are moved to some extent, the paper is moved to a position where writing is easy. The reason why this fact is a problem with the stylus is
Not only is the device more difficult to move than paper, but the relative mode, which was possible with a device with a separate input device and display device, is no longer possible. That is, since the concept of the cursor disappears and the pen tip and the point of interest (display point) always coincide with each other, only the pointing device moves to a position where the operator can easily write without moving the cursor on the display device. This is the point where it is no longer possible. From this point, there arises a problem that the input operability of the operator deteriorates. The present invention has been made by focusing on the above points, and simulates moving paper on a computer system using a stylus,
An object of the present invention is to provide a screen scroll method for a stylus with improved operability.

[0006]

A first aspect of a screen scroll method for a stylus of the present invention is to control a screen on a stylus for inputting by an input device by directly pointing a display position of the display device by a pointing device. In the case where the pointing device is brought into contact with the stylus, the position where the pointing device is separated from the end position of the drawn figure is stored, and the position where the pointing device is again brought into contact with the stylus from the position. It is characterized in that the screen on the stylus is controlled to move by the vector amount up to.

The second invention of the screen scroll method for the stylus of the present invention is to control the screen on the stylus for inputting by the input device by directly pointing the display position of the display device with the pointing device. A screen on the stylus for storing the entry position of the last character written by the device, and a vector amount from the entry position to the entry position where the character following the last character is written by bringing the pointing device into contact with the stylus again. Is characterized in that it is controlled to move.

A third aspect of the screen scrolling method for the stylus of the present invention is to control the screen on the stylus for inputting by the input device by directly pointing the display position of the display device with the pointing device. After the device is once separated from the stylus, the position of the first contact on the stylus is stored, and only the vector amount from the position to the position of the pointing device again separated and the contact on the stylus is stored on the stylus. It is characterized in that the movement of the screen is controlled.

[0009]

In the screen scroll method for the stylus of the present invention, in the first invention, when drawing a figure with the stylus, it is assumed that a line drawing is drawn with the electronic pen and the electronic pen is once released. At this time, when the electronic pen is contacted again, the terminal position of the line drawing moves to the contact position. This allows the operator to draw the continuation of the line drawing from a position where it is easy to draw. Further, in the second invention, when writing a character with the stylus, if the electronic pen is released from the position where the character was last written and the contact is made again, the contacted position becomes the position where the next character should be written. Therefore, the operator can proceed to write the character at a position where it is easy to write. Further, according to the third aspect of the invention, the screen is controlled to move by the vector amount designated between the two touched points by touching the stylus twice with the electronic pen. This allows the operator to arbitrarily control the movement of the screen.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of an apparatus to which the method of the present invention is applied. The illustrated device is a control device 1.
And the input / display device 2. However, it does not matter here whether the control device 1 and the input / display device 2 are different housings or the same housing. The control device 1 comprises a scroll vector calculation means 4 and a scroll means 5. The scroll vector calculation means 4 determines the scroll amount and direction of the scroll means 5. That is, the scroll vector M is determined by designating two points TL and TC within the effective input / display area W1 on the input / display device 2. 2 points T
There are two ways to specify L and TC, which are automatic scrolling and specified amount scrolling, as will be described later.

The scroll means 5 moves each point of interest in the effective input / display area W1 on the input / display device 2 by the scroll vector. That is, the coordinates of each point of interest TX are calculated by TX-M to move. The input / display device 2 comprises a display device such as a CRT and the electronic pen 3 and constitutes a stylus. FIG. 4 is a flow chart for explaining a processing procedure regarding one-time coordinate input in the screen scroll method of the present invention. The process shown in this figure shall be called from another process using an interrupt from the stylus, an appropriate predetermined time interval, or both. Further, FIG. 5 is a flowchart illustrating the movement process in step S31 of FIG. That is, this figure shows the details of this process by extracting a part of the process (step S31) shown in FIG.

Further, FIG. 6 shows data relating to the flowcharts of FIGS. 4 and 5. FIG. 7 is an explanatory diagram for obtaining the movement amount in the image mode in the movement process of FIG. 5, and FIG. 8 is an explanatory diagram for obtaining the movement amount in the character mode. Meanwhile, FIGS.
FIG. 7 is an operation explanatory view showing an implementation status of the present invention from the viewpoint of an operator. Hereinafter, according to FIG. 9 to FIG.
6 shows how the processes shown in FIGS. 4 and 5 are executed.

(Example 1) Automatic scroll at the time of drawing an image (corresponding to FIG. 9) In FIG. 9, an operator writes a curve S in an effective input / display area W1 on a stylus using an electronic pen. It shows the situation. At this time, the area W1 is not particularly limited to hardware restrictions. That is, CR
Not limited to the entire area of the screen such as T, it may be a partial area. In FIG. 9A, the operator writes the curve S from the left, and the pen tip is currently in contact with the stylus at the point T1. This curve S corresponds to steps S10, S11, S20 and S2 in the flowchart shown in FIG.
It is drawn by repeating the route of 1, S22, and S23.

Here, it is assumed that the operator lifts the pen from the stylus on the point T1 as shown in FIG. 9 (b). In other words, assume that the pen and stylus are not in contact with each other. At this time, in the process of FIG. 4, first, the coordinates of the pen are read in step S10, but since the pen is not in contact, the determination in step S11 determines that there is an error. As a result, step S12 is entered. At this time, if it is assumed that the data D13 is in the automatic scroll mode by some means, the process proceeds to step S13 in the determination of step S12. Then, in step S13, invalid (INVALID) is stored in the pen tip validity data D12 in the sense that the pen is separated.

FIG. 9C shows a state at the moment when the operator puts the pen on the stylus at the position T2 where writing is easy in the above state. When the process of FIG. 4 is called in this state, the coordinates of the point T2 are normally captured in the data area D21 in the process of step S10, and as a result, the process proceeds from the determination of step S11 to step S20.
In the determination in step S20, "INVALID" is set in D12 in step S13 shown in the description of FIG. 9B.
The state of is stored. Therefore, in step S31, the display data on the display is scrolled. Details of step S31 are shown in FIG. Here, it is assumed that the write mode D14 is set to "image" by some suitable means. Then, the process of step S33 is started.
In step S33, the scroll amount of the data displayed on the display is calculated. The scroll M during image drawing is equal to the difference between the point T1 when the pen is released and the point T2 when the pen is reattached in FIG.

FIG. 7 shows this state. In this Figure 7,
9 corresponds to TL in FIG. 7, and T2 in FIG. 9 corresponds to TC in FIG. The processing for moving the scroll amount M over all points on the screen is steps S35, S.
36, S37 and S38. Steps S35 and S3
6 is a process for determining whether all the focus points TX within the display range have been moved. Step S37 is a process of moving the display data (state) of the point of interest TX, Step S3
8 is a process of moving the point of interest TX to the next point. It should be noted that the point where the display data is stored corresponding to the point of interest TX (TX-
It is possible that M) exceeds the display range, but in this case, some processing such as invalidating the exceeded portion is performed.

As a result, the display area becomes the state shown in FIG. 9 (d). That is, in drawing the curve S, the operator can restart drawing from the point T2 on the stylus from the position where the pen on the curve S in FIG. 9B is released. (Example 2) Automatic scroll when writing characters (see FIG. 10)
The automatic scrolling at the time of writing characters substantially follows the method of the above-described (Example 1), but the following points are different. Figure 4
In the processing of step S12, while scrolling for writing one character, in the determination of step S12, the process goes down as it is, and only when the operator desires automatic scroll in the unit of inputting one character, some kind of step S13 is entered. Need a means. The automatic scroll designation D13 shown in FIG. 6 changes appropriately. Further, in FIG. 5, step S34 is performed instead of step S33.

The step S34 of FIG. 5 will be described below. In the case of inputting characters, unlike image input, automatic scrolling is performed in units of one character only when the operator desires. Moreover, the character input is restarted from the character input position located next to the last input character. These points are different from the case of the image. The operation of the operator at this time and the input / display status in the present invention are shown in FIG. In FIG. 10, a small rectangle surrounded by a broken line indicates an input area for one character. At this time, the broken line shown in FIG. 10 may or may not be actually displayed.
It is assumed that the operator is writing a document as shown in FIG. 10A, desires automatic scrolling when writing the character "Ne", and releases the pen (state of FIG. 10B).

Then, it is assumed that the operator brings the pen into contact with the squares in which "su" is written as a position for writing easily (state of FIG. 10C). At this time, FIG.
The correction for scrolling the whole so that the blank square on the right next to the character "ne" written in (a) to (c) of FIG. 10 is at the "su" position is step S3 shown in FIG.
It is 4. The scroll amount at this time is not the direct difference between the point TL at which the pen is released and the point TC at which the pen is again in contact, as shown in FIG. That is, in d, which is a square for character input next to the square c in which the last character is written in FIG. 8, a point TH that coincides with TL at a relative position in each square and a similar point in the destination square a. The whole must be moved by the difference amount M of TC. The correction process for this is step S34 in FIG. This scroll amount M
Can also be obtained by individually obtaining the points TH and TD, but the input grid (d in FIG. 8) next to the pen-distant point TL and the grid to which the re-grounding point TC belongs (FIG. 8). Then, it is also possible to directly obtain from the distance of a) (for example, the distance between the upper left points of the squares a and d).

As a result of the above, the operator can promptly restart the character input from the grid a designated as the destination. The state at this time is shown in FIG. (Embodiment 3) Specified amount scroll at the time of image drawing and character writing (corresponding to FIG. 11 and FIG. 12) Both at the time of image drawing and character writing described above (Example 1) and (Example 2) Follow the method of. The difference is that the scroll amount is clearly specified by the operator's operation, which is different from the above method. 11 and 12 show how the display is performed by the operation of the operator and the processing according to the present invention, respectively. FIG. 11 shows a state in which the operator writes the curve C in the effective input / display area W1 on the stylus using the electronic pen.

In FIG. 11 (a), the operator writes a curve C, and it is assumed that the pen tip is now away from the stylus at the last point T. This curve C corresponds to steps S10, S11, S in the flowchart shown in FIG.
It is drawn by repeating the route of 20, S21, S22, and S23. Here, the operator is shown in FIG.
Assume that the pen is on the stylus over point A and immediately released, as shown in. In other words, it is assumed that the pen and the stylus are in contact with each other for a short time and then returned to the state where they are not in contact. At this time, in the process of FIG. 4, first, the coordinates of the pen are read in step S10, but since the pen is not in contact, the determination in step S11 determines that there is an error. As a result, step S12 is entered. At this time, if it is assumed that the data D13 is in the automatic scroll mode by some means, the process proceeds to step S13 in the determination of step S12. Then, step S13
In, the invalidity (INVALID) is stored in the pen tip validity data D12 in the sense that the pen is separated.

FIG. 11C shows a state at the moment when the operator puts the pen on the scroll amount designated position B on the stylus in the above state. When the process of FIG. 4 is called in this state, the coordinates of the point T2 are normally captured in the data area D21 in the process of step S10, and as a result, the process proceeds from the determination of step S11 to step S20. In the determination of step S20, the above-mentioned FIG.
By the step S13 shown in the explanation of (b), the state of "INVALID" is stored in D12. Therefore, in step S31, the display data on the display is scrolled. Details of step S31 are shown in FIG.
Is shown in. Here, it is assumed that the write mode D14 is set to "image" by some suitable means. Then, the process of step S33 is started. In step S33, the scroll amount of the data displayed on the display is calculated. The scroll M during image drawing is equal to the difference between the point A when the pen is released and the point B when the pen is reattached in FIG.

FIG. 7 shows this state. In this Figure 7,
11 corresponds to TL in FIG. 7, and B in FIG. 9 corresponds to T in FIG.
Corresponds to C. The process of moving the scroll amount M over all points on the screen is steps S35 and S3.
6, S37 and S38. For these processing,
Since it is as described in the above (Example 1), duplicate description will be omitted. As a result, the display area becomes the state shown in FIG. That is, in drawing the curve C, the operator can scroll the curve C from the position of the point A in FIG. 11B to the amount specified between the positions of the points B.

On the other hand, in the case of inputting characters, unlike image input, in automatic scrolling, scrolling is performed only when the operator desires in units of inputting one character. Moreover, the character input is restarted from the character input position located next to the last input character. These points are different from the case of the image. The operation of the operator at this time and the input / display status in the present invention are shown in FIG. This operation is similar to the case of the above-described (Embodiment 2) in which the scroll vector is specified by the points A and B, and the step S3 of FIG.
4 is executed.

[0025]

As described above, according to the screen scroll method for the stylus of the present invention, the stylus scrolls only the distance between the stylus and the next contact with the stylus. When the touch point on the stylus and the display point on the stylus must always match, move the electronic pen to any position on the stylus that is easy for the operator to write, and then quickly restart image and character input. be able to. As a result, the operability of the stylus can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an apparatus to which the method of the present invention is applied.

FIG. 2 is a block diagram showing a conventional input / display device.

FIG. 3 is a block diagram showing a display / input device using a conventional stylus.

FIG. 4 is a flowchart illustrating a processing procedure relating to one coordinate input according to the method of the present invention.

FIG. 5 is a flowchart illustrating a moving process in step S31 of FIG.

FIG. 6 is an explanatory diagram of data regarding the flowcharts of FIGS. 4 and 5;

FIG. 7 is an explanatory diagram for obtaining a movement amount in the image mode.

FIG. 8 is an explanatory diagram for obtaining a movement amount in the character mode.

FIG. 9 is an explanatory diagram of an operation of automatic scrolling at the time of drawing an image.

FIG. 10 is an explanatory diagram of an operation of automatic scroll when writing characters.

FIG. 11 is an explanatory diagram of an operation of scrolling a designated amount when drawing an image.

FIG. 12 is an explanatory diagram of an operation of scrolling a designated amount when writing a character.

[Explanation of symbols]

 1 Control Device 2 Input / Display Device 3 Electronic Pen 4 Scroll Vector Calculation Means 5 Scroll Means

Claims (3)

[Claims] 1. A graphic drawn while the pointing device is in contact with the stylus when controlling the screen of the stylus for inputting by the input device by directly pointing the display position of the display device with the pointing device. A position where the pointing device is separated from the end position of the stylus is stored, and movement of the screen on the stylus is controlled by a vector amount from the position to a position where the pointing device is brought into contact with the stylus again. Screen scroll method for stylus. 2. When controlling a screen on a stylus for inputting by an input device by directly pointing a display position of a display device with a pointing device, the entry position of the last character written by the pointing device is stored, Screen scrolling in the stylus, characterized in that the pointing device is brought into contact with the stylus again from the writing position to move the screen on the stylus by a vector amount up to the writing position where the character following the final character should be written. Method. 3. When controlling a screen on a stylus for inputting by an input device by directly pointing a display position of a display device with the pointing device, the pointing device is once separated from the stylus, and then the stylus is moved. In the stylus, the position on the stylus is controlled by memorizing the position at which the stylus is first touched, and moving the screen on the stylus by the vector amount from the position to the position at which the pointing device is touched again and touched on the stylus. Screen scroll method.