JP2009037556A - Information processing apparatus and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information processing apparatus capable of achieving intuitive input without reducing the visibility of a display picture and without causing stress to a user and capable of executing handwritten input recognition and to provide a computer program for allowing a computer to execute the handwritten input recognition. <P>SOLUTION: The information processing apparatus 1 is provided with a tablet 2 for detecting the movement of a pen 21, a monitor 151 for displaying a cursor and a digitizer control unit 13 for detecting the positional relation of the pen 21 to the tablet 2 and determining the display position of the cursor on the monitor 151 in accordance with the detected positional relation. The digitizer control unit 13 detects the approach of the pen 21 to the tablet 2, and when the approach of the pen 21 to the table 2 is detected, arranges a partial area on a prescribed position on the monitor 151 and controls arrangement of the partial area so as to change it in accordance with the determined cursor display position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an information processing apparatus that can facilitate handwriting input and a computer program that causes a computer to execute handwriting input recognition.

  Conventionally, as a computer input device, not only a mouse or a trackball but also a digitizer for handwriting input is used. The digitizer for handwriting input includes a finger input method for associating the locus of the finger tracing the surface with the cursor operation on the screen and a pen input method for associating the locus of the pen tracing the surface with the cursor operation on the screen. . A digitizer for handwriting input can be operated intuitively using a finger or a pen, and the cursor can be operated more delicately and quickly than a mouse or the like that needs to be manipulated. It is most suitable as a device for inputting graphic data.

  Here, a digitizer for handwriting input by the pen input method will be described. FIG. 13 is a schematic diagram for explaining conventional pen input. The digitizer includes an input pen 91 and a tablet 9 that detects the locus of the pen 91. The tablet 9 has a plurality of elongated sensor coils 92 arranged on the surface. Each sensor coil 92 is connected to a switch 94. The switch 94 turns on / off the connection between the sensor coil 92 and the current driver 93 or the reception amplifier 95. The pen 91 includes a winding coil 911 and a capacitor 912 at the tip, and an LC resonance circuit is formed by the winding coil 911 and the capacitor 912. When the sensor coil 92 and the LC resonance circuit act as follows, the coordinates of the pen 91 on the tablet 9 are detected.

A current always flows through the current driver 93. When the switch 94 connects the current driver 93 and the sensor coil 92, a current flows through the sensor coil 92 and a magnetic field MF is generated on the surface thereof. When the pen 91 comes close to the tablet 9, an induced current flows through the winding coil 911 that has reacted to the magnetic field MF. When the induced current flows, the capacitor 912 enters a charged state.
When the switch 94 disconnects the connection between the current driver 93 and the sensor coil 92, the current flow in the sensor coil 92 stops. When the flow of current stops, a current from the electricity stored in the capacitor 912 flows through the winding oil 911 and a magnetic field MF is generated. The sensor coil 92 close to the pen 91 is influenced by the generated electric field MF and an induced current flows.
When the switch 94 connects the current driver 93 and the reception amplifier, the induction current of the sensor coil 92 flows through the reception amplifier 95, and the reception amplifier 95 converts the induction current into a detection signal to detect a detector (not shown). Output to. As a result, the tablet 9 detects that the location of the sensor coil 92 that has output the detection signal is the position of the pen 91 that is close.

  A digitizer for handwriting input by a finger input method will be described. The digitizer is composed of a tablet that detects the trajectory of a finger. The tablet has a plurality of sensors arranged on the surface. Each sensor detects a slight change in electrostatic capacitance on the finger to detect that the finger is in its upper position. As a result, the position of the finger on the tablet is detected.

  By the way, in a conventional handwriting input digitizer, when the resolution of the tablet is lower than the resolution of a liquid crystal monitor or the like that displays the display screen, the movement amount of the operation on the tablet is the amount of the cursor on the display screen. There is a problem that the amount of movement becomes larger and the cursor on the display screen cannot be operated intuitively. Note that the amount of movement here refers to the distance of movement.

  FIG. 14 is a schematic diagram for explaining conventional handwriting input. As shown in the figure, for example, when inputting line writing data such as characters, symbols and figures by moving the cursor within the display screen 96, for example, when inputting delicate line writing data in a narrow area, the tablet 9 has a problem that it is necessary to perform a very delicate pen operation and stresses the user who performs the operation (see FIG. 14A).

  Therefore, a device has been proposed in which a partial area LS that can be displayed dot-by-dot with respect to the resolution of the tablet 9 is provided in the display screen 96 and line writing data is input in the partial area LS (see FIG. 14B). ). According to the device, since the movement amount of the operation on the tablet 9 and the movement amount of the cursor on the partial area LS match, it becomes possible to intuitively input delicate characters in the display screen 96. It was.

  However, this apparatus has a problem that the partial area LS lowers the visibility of the display screen 96, and when trying to continuously input line writing data over a wide range beyond the partial area LS, the partial area is moved sequentially according to the input. Had the problem of needing to do. (See FIG. 14 (b)).

Therefore, conventionally, by providing an operation unit for making it easy to operate the movement of the partial area separately from the tablet, handwriting that can quickly move the partial area while inputting data to the partial area. An input recognition device has been proposed (for example, Patent Document 1).
JP 2003-122492 A

  However, the invention described in Patent Document 1 has a problem that a separate device is required for operating the movement of the partial region, and a separate installation space is further required. Further, for example, in the invention described in Patent Document 1, it is necessary to operate a digitizer for handwriting input with one hand and to move a partial area with the other hand. There was a problem that the significance of handwriting input that can be input intuitively is impaired.

  The present invention has been made in view of such circumstances, and an object of the present invention is to arrange a partial area at a predetermined position on the display screen when the pen is brought close to an input surface capable of detecting the movement of the pen. , By determining the position of the cursor on the display screen based on the positional relationship between the input surface and the pen, and arranging the partial area based on the determined cursor position, without reducing the visibility of the display screen It is an object to provide an information processing apparatus that executes handwritten input recognition capable of intuitive input without causing stress to a person and a computer program for causing a computer to execute the handwritten input recognition.

  In order to solve the above object, an information processing apparatus according to the present invention includes an input surface for detecting a pen movement, a display screen for displaying a cursor, a detecting unit for detecting a positional relationship of the pen with respect to the input surface, and a detection. An information processing apparatus comprising: a determination unit that determines a display position of a cursor on the display screen according to the positional relationship; a unit that detects the proximity of a pen to the input surface; and a proximity of the pen to the input surface And a means for arranging the partial area at a predetermined position on the display screen, and a control means for changing the arrangement of the partial area in accordance with the display position of the cursor determined by the determining means. .

  In addition, the information processing apparatus according to the present invention includes a unit that calculates a direction in which the cursor moves based on the display position of the cursor determined by the determining unit, and a direction in which the partial region should be moved according to the calculated direction. A moving direction determining means for determining the partial area according to the determined moving direction.

  Further, the information processing apparatus according to the present invention includes first movement amount determination means for determining an amount that the cursor should move based on the display position of the cursor determined by the determination means, and a pen on the input surface. Second contact amount determination means for counting the number of times of contact and determining the amount to move the partial area according to the counted number of contact, and detecting the contact pressure to the input surface of the pen And at least one third movement amount determining means for determining an amount of movement of the partial area according to the contact pressure, and the control means arranges the partial area according to the determined amount of movement. It is made to do so.

  The information processing apparatus according to the present invention is characterized in that the control means enlarges or reduces the size of arranging the partial area in accordance with the determined direction or amount to be moved.

  Furthermore, the computer program according to the present invention is a computer program for causing a computer to determine a display position of a cursor on a display screen in accordance with a positional relationship between an input surface capable of detecting the movement of a pen and the pen. A step of detecting the proximity of the pen to the input surface; a step of arranging a partial area at a predetermined position of the display position when the computer detects the proximity of the pen to the battle record input surface; and a cursor determined by the computer And a step of changing the arrangement of the partial areas according to the display position.

  In the present invention, by placing the partial area at a predetermined position on the display screen when the pen is brought close to the input surface capable of detecting the movement of the pen, for example, the partial area such as inputting handwritten characters by the pen It is possible to display the partial area on the display screen only when it is necessary to reduce the visibility of the display screen as much as possible. In addition, the position of the cursor on the display screen is determined based on the positional relationship between the input surface and the pen, and the arrangement of the partial area is changed based on the determined cursor position, so that a special operation for operating the partial area is performed. Since there is no need to provide a separate device, the installation space can be saved and no special operation is required, so intuitive data input can be maintained.

  In the present invention, the visibility of the display screen can be prevented from being reduced as much as possible. In addition, for example, even when changing the position or enlargement / reduction of a partial area of the display screen, a special device is not provided separately, so installation space can be saved and a special operation is not forced. Data can be input intuitively.

  Hereinafter, an information processing apparatus for executing handwriting input recognition according to the present invention and a computer program for causing a computer to execute the handwriting input recognition will be described with reference to the drawings illustrating embodiments. FIG. 1 is a block diagram showing a configuration of an information processing apparatus according to the present invention.

  In FIG. 1, reference numeral 1 denotes an information processing apparatus according to the present invention. The information processing apparatus 1 includes a pen input interface 11, a finger input interface 12, a digitizer control unit 13, an external storage device 14, an output interface 15, an auxiliary storage device 16, a RAM 17, and a CPU 18.

  The pen input interface 11 is connected to the tablet 2 of the digitizer. The pen input interface 11 serves as a window for receiving the detection signal output from the tablet 2. The pen input interface 11 calculates pen coordinates based on the received detection signal.

  The finger input interface 12 is connected to the tablet 2 of the digitizer. The finger input interface 12 serves as a window for receiving a detection signal output from the tablet 2. Also, the finger input interface 12 calculates finger coordinates based on the received detection signal.

  The tablet 2 detects the movement of the pen 21 or the finger moving on the surface and outputs a detection signal to the pen input interface 11 or the finger input interface 12. The detection signal is received by the pen input interface 11 or the finger input interface 12, and controls the information processing apparatus 1 described later to give an instruction to the movement of the cursor in the display screen. Note that the method of detecting the movement of the pen 21 or the finger by the tablet 2 is the same as the conventional pen input or finger input described above, and thus the description thereof is omitted here.

  The digitizer control unit 13 is a unit for controlling the digitizer configured by the information processing apparatus 1 and the tablet 2, and includes a finger position detection unit 131, a pen proximity detection unit 132, a cursor position detection unit 133, and a partial region position detection unit. 134, a partial region display control unit 135, a designated region intrusion determination unit 136, a partial region movement amount direction determination unit 137, a pen position detection unit 138, and an input coordinate calculation unit 139. Each hardware is mutually connected by a bus (not shown). In this embodiment, the digitizer control unit 13 is described as an example of a group of dedicated arithmetic processors. However, the present invention is not limited to this, and the CPU 18 may be responsible for all the functions of the arithmetic processors.

  The finger position detection unit 131 receives the finger coordinates calculated by the finger input interface 12, and detects the finger position on the tablet 2 as a relative coordinate based on the received finger coordinates. The finger position detection unit 131 outputs the detected relative coordinates to the RAM 17. The relative coordinates are received by the RAM 17 and then output to the cursor position detection unit 133 via the CPU 18.

  The pen position detection unit 138 receives the pen coordinates calculated by the pen input interface 11 and detects the pen position on the tablet 2 based on the received pen coordinates. The pen position detection unit 138 outputs the detected pen position to the input coordinate calculation unit 139.

  The input coordinate calculation unit 139 calculates the input coordinates of the line drawing data based on the pen position output from the pen position detection unit 138 and the position of the partial area output from the partial area position detection unit 134 described later. The calculated input coordinates are output to the RAM 17 as absolute coordinates for the partial area. The absolute coordinates are output to the RAM 17 and then to the cursor position detection unit 133 via the CPU 18.

  The pen proximity detection unit 132 detects the proximity state of the pen 21 to the tablet 2 by monitoring whether an induced current is flowing through the sensor coil in the tablet 2. When detecting the proximity state, the pen proximity detection unit 132 outputs a detection signal to the cursor position detection unit 133, the partial region display control unit 135, or the designated region intrusion determination unit 136.

When the cursor position detection unit 133 receives the detection signal output from the pen proximity detection unit 132, the cursor position detection unit 133 performs the following processing.
The cursor position detection unit 133 detects the cursor position (x, y) on the display screen based on the relative coordinates or absolute coordinates received from the CPU 18. The cursor position detection unit 133 outputs the detected cursor position (x, y) to the partial region position detection unit 134.
As described above, in the present invention, the resolution of the partial area can be displayed dot-by-dot with respect to the resolution of the tablet 2, so the amount of movement of the pen 21 that moves on the tablet 2 and the cursor that moves on the display screen The amount of movement can be matched, and the cursor in the display screen can be operated intuitively.

The partial region position detection unit 134 executes the following process when the cursor position (x, y) output from the cursor position detection unit 133 is received.
The partial area position detection unit 134 reads the end point coordinates of the partial area position at time t (t ≧ 0) stored in the auxiliary storage device 16 and detects the position of the partial area based on the read end point coordinates.
Further, the partial region position detection unit 134 updates the updated end point coordinates at t = 0 based on the movement amount and movement direction of the partial region output from the partial region movement amount direction determination unit 137 described later. The position of the moved partial area is detected based on the end point coordinates. The amount of movement of the partial area here refers to the distance by which the partial area is moved from the center point to the moving point.
Further, the updated end point coordinates are stored in the auxiliary storage device 16.
Furthermore, the partial region position detection unit 134 outputs the position of the detected partial region to the partial region display control unit 135, the designated region intrusion determination unit 136, and the input coordinate calculation unit 139.

The partial area display control unit 135 executes the following process when the detection signal output from the pen proximity detection unit 132 is received.
When the partial region display control unit 135 receives the position of the partial region output from the partial region position detection unit 134, the partial region display control unit 135 outputs a drawing signal to draw the partial region on the display screen based on the received partial region position. Output to the RAM 17. The drawing signal is received by the RAM 17 and then output to the output interface 15 via the CPU 18. Note that the partial area display control unit 135 does not output a drawing signal when it does not receive a detection signal to be output from the pen proximity detection unit 132.
As described above, in the present invention, the partial area display control unit 135 turns on / off the display of the partial area in accordance with the pen proximity state. Therefore, when the pen is not in proximity and no data is input, the partial area is displayed. It is possible to hide the display screen, and it is possible to avoid a decrease in the visibility of the display screen.

  When receiving the detection signal output from the pen proximity detection unit 132, the designated region intrusion determination unit 136 executes an in-region determination process described later, and outputs the intrusion signal to the partial region movement amount direction determination unit 137.

When the partial area movement amount direction determination unit 137 receives the intrusion signal output from the intrusion determination unit 136 within the designated area, the partial area movement amount direction determination unit 137 calculates the difference between the cursor position (x ₀ , y ₀ ) and the cursor position (x _t , y _t ). Based on the calculated difference, a partial area operation process to be described later is executed. The partial region movement amount direction determination unit 137 outputs the determined partial region movement amount and movement direction to the partial region position detection unit 134.

  The external storage device 14 is a unit for reading a program or data stored in a portable recording medium 141 such as (Digital Versatile Disc) or CD (Compact Disc). When the recording medium 141 is inserted into an insertion slot (not shown), the external storage device 14 reads a program stored in the inserted recording medium 141 and outputs the read program to the auxiliary storage device 16. To do.

  The output interface 15 is connected to the monitor 151 and displays a display screen on the monitor 151 in accordance with a program or data stored in the RAM 17. The monitor 151 is a device that outputs a CRT, LED, or liquid crystal display type image.

  The auxiliary storage device 16 corresponds to, for example, a magnetic storage type hard disk. The auxiliary storage device 16 stores a program read from the recording medium 141, end point coordinates of the partial region position, and other various data.

  The RAM 17 is configured by SRAM, DRAM, or the like. For example, the program read from the auxiliary storage device 16, various data generated by executing the program, the relative coordinates output from the finger position detection unit 131, and the part The drawing signal output from the area display control unit 135 and the absolute coordinates output from the input coordinate calculation unit 139 are received and stored.

  The CPU 18 controls the hardware of the information processing apparatus 1 to execute handwriting input recognition. Note that the CPU 18 may be responsible for all the functions of the arithmetic processing units provided in the digitizer control unit 13.

Example 1.
Next, the display screen displayed on the monitor 151 and the display of the partial area will be described. FIG. 2 is a schematic diagram illustrating a display example of the partial region PS1 according to the first embodiment. In FIG. 2, S is a display screen displayed on the monitor 151. The display screen S includes a partial area PS1 that can be displayed dot by dot with respect to the resolution of the tablet 2. The partial area PS1 can be moved in the up / down / left / right oblique directions within the display screen S (see PS2 in FIG. 2). The partial area PS1 is composed of an input area I and a designated area G.

  The input area I is an area for inputting line writing data. When the CPU 18 determines that the cursor operated with the pen 21 has entered the input area I, the CPU 18 executes processing in the line writing data input mode. The grounding refers to the case where the pen 21 touches the tablet 2.

  The designated area G is an area for designating the movement of the partial area PS1. When the CPU 18 determines that the cursor operated with the pen 21 has entered the designated area G, the CPU 18 executes processing in the operation mode of the partial area. Note that the proximity means that the distance between the pen 21 and the tablet 2 is a predetermined distance. For example, the distance at which the coil sensor of the tablet 2 can flow an induced current by being influenced by the electric field generated from the pen 21. Point to.

The digitizer control unit 13 of the information processing apparatus 1 detects the cursor position (x ₀ , y ₀ ) when determining that the pen 21 is in the proximity state to the tablet 2. The digitizer control unit 13 draws a rectangular partial area PS1 having a predetermined resolution with the detected cursor position (x ₀ , y ₀ ) as the center point in the display screen S. Digitizer control unit 13 penetrates again detected cursor location (x _t, y _t) into the input region I, and, the pen 21 is not grounded to the tablet 2 was determined to be slightly floated so-called When the cursor is moving.

When the digitizer control unit 13 determines that the cursor position (x _t , y _t ) detected again has entered the designated area G, the digitizer control unit 13 executes a process for moving the partial area PS1. As a result, the digitizer control unit 13 moves the partial area PS1 and redraws it as the partial area PS2 (see FIG. 2).

When the digitizer control unit 13 determines that the detected cursor position (x _t , y _t ) has entered the input area I and the pen 21 is grounded to the tablet 2, the digitizer control unit 13 Perform processing in input mode.

  Next, a procedure of handwritten input recognition processing executed by the information processing apparatus 1 will be described. FIG. 3 is a flowchart showing the procedure of the input recognition process. The digitizer control unit 13 of the information processing apparatus 1 executes an in-region determination process described later (S101), and determines whether an intrusion signal has been output by executing the in-region determination process (S102). As a result, when the digitizer control unit 13 determines that an intrusion signal is not output (NO in S102), the input recognition process is completed.

On the other hand, when the digitizer control unit 13 determines that an intrusion signal has been output (YES in S102), the cursor positions (x ₀ , y ₀ ) and (x _t , y _t ) detected in the in-region determination process in step S101 Is calculated (S103). The digitizer control unit 13 executes a partial area operation process based on the calculated difference (S104), and reads the end point coordinates of the partial area PS1 at t = 0 from the auxiliary storage device 16 (S105).

  The digitizer control unit 13 updates the end point coordinates of the partial area PS1 based on the result of the partial area operation processing executed in step S104 (S106), and draws the updated partial area PS2 (S107). In the first embodiment, the updated partial area PS2 is described as a partial area moved to a position different from that of the partial area PS1 before update.

  Next, the procedure of the in-region determination process executed in step S101 will be described. FIG. 4 is a flowchart showing the procedure of the in-region determination process. The digitizer control unit 13 resets the time t stored in the RAM 17 to 0 (S201) and performs initialization. The digitizer control unit 13 determines whether or not the pen 21 is in proximity to the tablet 2 (S202). If the digitizer control unit 13 determines that the pen 21 is not in proximity (NO in S202), the process proceeds to step S201. Return and repeat the in-region determination process.

On the other hand, the digitizer control unit 13, when the pen 21 is determined to be in the proximity state (YES in S202), the cursor position (x _t, y _t) to detect (S203). The digitizer control unit 13 determines whether or not the detected cursor position (x _t , y _t ) has entered the partial area PS1 (S204), and the cursor position (x _t , y _t ) is within the partial area PS1. If it is determined that no intrusion has occurred (NO in S204), the process returns to step S201 to repeat the in-region determination process.

On the other hand, when the digitizer control unit 13 determines that the cursor position (x _t , y _t ) has entered the partial area PS1 (YES in S204), the cursor position (x _t , y _t ) further falls within the designated area G. It is determined whether or not the user has entered (S205). As a result, when the digitizer control unit 13 determines that the cursor position (x _t , y _t ) has entered the designated area G (YES in S205), it outputs an intrusion signal (S206).

On the other hand, when the digitizer control unit 13 determines that the cursor position (x _t , y _t ) has not entered the designated area G (NO in S205), the digitizer control unit 13 enters the ground state in which the pen 21 is grounded to the tablet 2. It is determined whether or not there is (S207). As a result, when the digitizer control unit 13 determines that the pen 21 is in the grounded state (YES in S207), it performs line writing data input (S208), and returns to step S202 to repeat the in-region determination process.

  On the other hand, when the digitizer control unit 13 determines that the pen 21 is not in the grounded state (NO in S207), 1 is added to the time t (S209), and the process returns to step S202 to repeat the in-region determination process. In the first embodiment, the value added to time t is 1. However, the present invention is not limited to this, and the time counted by a timer (not shown) may be added.

  Next, the procedure of the partial area operation process executed in step S104 will be described. FIG. 5 is a flowchart illustrating the procedure of the partial area operation process according to the first embodiment. The digitizer control unit 13 calculates the moving speed of the cursor from the center point to the moving destination based on the difference in the cursor position calculated in step S103 and the time 0 to t (S301). Further, the digitizer control unit 13 calculates the movement direction of the cursor from the center point to the movement destination based on the difference in the cursor position calculated in step S301 (S302).

  The digitizer control unit 13 determines the movement amount of the partial area PS1 corresponding to the cursor movement speed calculated in step S301 (S303), and determines the movement amount of the partial area PS1 corresponding to the cursor movement direction calculated in step S302. Determine (S304). In this determination, a table (not shown) in which the movement speed of the cursor and the movement amount of the partial area PS1 are associated with each other and a table (not shown) in which the movement direction of the cursor and the movement direction of the partial area PS1 are associated with each other. ). The table is stored in advance in the auxiliary storage device 16, and is read out as necessary.

Example 2
In the first embodiment described above, an example in which the cursor is moved from the center point to the destination without performing a special operation such as tapping the pen 21 has been described. However, the present invention is not limited to this, and the cursor may be moved from the center point to the destination by tapping the pen 21 at an arbitrary position of the tablet 2. In the second embodiment, an example in which the pen 21 is tapped with the tablet 2 will be described. In the second embodiment, the tablet 2 includes a pressure sensor (not shown) that detects the tap of the pen 21, and the digitizer control unit 13 of the information processing apparatus 1 counts the number of taps detected by the pressure sensor. A counter (not shown) is provided.

  First, the display of the partial area PS1 displayed on the monitor 151 according to the second embodiment will be described. FIG. 6 is a schematic diagram for explaining the partial region PS1 according to the second embodiment. The partial area PS1 is composed of an input area I and a designated area G.

The digitizer control unit 13 of the information processing apparatus 1 detects the cursor position (x ₀ , y ₀ ) when it is determined that the pen 21 is in proximity to the tablet 2. The digitizer control unit 13 draws a rectangular partial area PS1 having a predetermined resolution with the detected cursor position (x ₀ , y ₀ ) as the center point in the display screen S. When the digitizer control unit 13 determines that the cursor position (x _t , y _t ) when the pen 21 is tapped is within the input area I, the digitizer control unit 13 treats the cursor as moving.

When the digitizer control unit 13 determines that the cursor position (x _t , y _t ) when the pen 21 is tapped is within the designated area G, the digitizer control unit 13 executes processing for moving the partial area PS1.

Further, the digitizer control unit 13, the cursor position when the pen 21 is grounded to the tablet 2 (x _t, y _t) when it is determined that is within the input area I, the process input mode line writing data Execute.

  Next, a procedure of handwritten input recognition processing executed by the information processing apparatus 1 according to the second embodiment will be described. However, in the second embodiment, the processing procedures other than the partial area operation processing are the same as those in the first embodiment, and thus the description thereof is omitted. Therefore, the procedure of the partial area operation process executed in step S104 will be described next. FIG. 7 is a flowchart illustrating a procedure of partial area operation processing according to the second embodiment.

The digitizer control unit 13 of the information processing apparatus 1 calculates the movement direction of the cursor from the center point to the movement destination based on the difference in the cursor position calculated in step 103 (S401). The digitizer control unit 13 counts the number of taps at the cursor position (x _t , y _t ) that is the movement destination (S402).

  The digitizer control unit 13 determines the movement amount of the partial area PS1 corresponding to the number of taps counted in step 402 (S403), and determines the movement direction of the partial area PS1 corresponding to the movement direction of the cursor calculated in step S401. (S404). The determination is made in a table (not shown) in which the number of taps and the movement amount of the partial area PS1 are associated with each other and in a table (not shown) in which the movement direction of the cursor is associated with the movement direction of the partial area PS1. Based on. The table is stored in advance in the auxiliary storage device 16 and is read out as necessary.

  In the second embodiment, an example is shown in which the amount of movement of the partial region PS1 is determined according to the number of taps. However, the present invention is not limited to this. It may be.

Example 3 FIG.
In the second embodiment described above, an example in which the cursor is moved from the center point to the destination by tapping the pen 21 with the tablet 2 has been described. However, the present invention is not limited to this, and the cursor may be moved from the center point to the destination by performing a ground pressure operation in which the pen 21 is grounded at an arbitrary position of the tablet 21 and further pressed. Therefore, in the third embodiment, an example in which the pen 21 is operated with the ground pressure by the tablet 2 will be described. In the third embodiment, the tablet 2 includes a pressure sensor (not shown) that detects the ground pressure of the pen 21, and the digitizer control unit 13 of the information processing apparatus 1 calculates the pressure detected by the pressure sensor. The pressure calculation part (not shown) is provided.

  First, the display of the partial area PS1 displayed on the monitor 151 according to the third embodiment will be described. FIG. 8 is a schematic diagram for explaining a partial region according to the third embodiment. The partial area PS1 is composed of an input area I and a designated area G.

The digitizer control unit 13 of the information processing apparatus 1 detects the cursor position (x ₀ , y ₀ ) when determining that the pen 21 is in the proximity state to the tablet 2. The digitizer control unit 13 draws a rectangular partial area PS1 having a predetermined resolution with the detected cursor position (x ₀ , y ₀ ) as the center point in the display screen S. Digitizer control unit 13, when the cursor position when the pen 21 is multiplied by the ground pressure on the tablet 2 (x _t, y _t) is determined to be within the input region I, treated as moving the cursor.

Further, the digitizer control unit 13, the cursor position when the pen 21 is multiplied by the ground pressure on the tablet 2 (x _t, y _t) when it is determined that is within the designated area G, for moving the partial area PS1 Execute the process.

Further, the digitizer control unit 13, the cursor position when the pen 21 is grounded to the tablet 2 (x _t, y _t) when it is determined that is within the input area I, the process input mode line writing data Execute. Here, the difference between the ground pressure and the ground is that the ground pressure is that the pen 21 is grounded to the tablet 2 and pressed with a pressure higher than a predetermined pressure, whereas the ground is that the pen 21 is touched by the tablet 2. Touching with a predetermined pressure or less.

  Next, a procedure of handwritten input recognition processing executed by the information processing apparatus 1 according to the third embodiment will be described. However, in the third embodiment, the processing procedures other than the partial area operation processing are the same as those in the first embodiment, and thus the description thereof is omitted. Therefore, the procedure of the partial area operation process executed in step S104 will be described next. FIG. 9 is a flowchart illustrating the procedure of the partial area operation process according to the third embodiment.

The digitizer control unit 13 of the information processing apparatus 1 calculates the movement direction of the cursor from the center point to the movement destination based on the difference in the cursor position calculated in step S103 (S501). The digitizer control unit 13 detects the ground pressure of the pen 21 at the cursor position (x _t , y _t ) that is the movement destination (S502).

  The digitizer control unit 13 determines the movement amount of the partial area PS1 corresponding to the pen contact pressure detected in step S502 (S503), and determines the movement direction of the partial area PS1 corresponding to the cursor movement direction calculated in step S501. (S504). The determination is made in a table (not shown) in which the contact pressure and the movement amount of the partial area PS1 are associated with each other and in a table (not shown) in which the movement direction of the cursor is associated with the movement direction of the partial area PS1. Based on. The table is stored in advance in the auxiliary storage device 16 and is read out as necessary.

Example 4
In the first to third embodiments described above, an example has been described in which the updated partial area PS2 is moved to a position different from the pre-updated partial area PS1 by the operation of the pen 21. However, the present invention is not limited to this, and the partial area PS1 before the update may be enlarged or reduced by operating the pen 21. Therefore, in the fourth embodiment, an example in which the partial area PS1 before update is enlarged or reduced by the operation of the pen 21 will be described.

  First, display of the display screen S displayed on the monitor 151 according to the fourth embodiment and the partial area PS1 will be described. FIG. 10 is a schematic diagram illustrating a display example of the partial region PS1 according to the fourth embodiment. The partial area PS1 can be enlarged or reduced in the display screen S (see PS3 in FIG. 10). The partial area PS1 includes an input area I, a first quadrant G1 of the designated area G, and a second quadrant G2 of the designated area G.

  The input area I is an area for inputting line writing data.

  The first quadrant G1 and the second quadrant G2 are divided by a diagonal line connecting the rectangular designated region G with the upper right end and the lower left end, the left side of the diagonal is the first quadrant G1 quadrant G1, and the right side of the diagonal is the second quadrant G2. It is as. The first quadrant G1 is an area for instructing enlargement of the partial area PS1. The second quadrant G2 is an area for instructing reduction of the partial area PS1.

The digitizer control unit 13 of the information processing apparatus 1 detects the cursor position (x ₀ , y ₀ ) when determining that the pen 21 is in the proximity state to the tablet 2. The digitizer control unit 13 draws a rectangular partial area PS1 having a predetermined resolution with the detected cursor position (x ₀ , y ₀ ) as the center point in the display screen S. When the digitizer control unit 13 determines that the detected cursor position (x _t , y _t ) has entered the input area I and the pen 21 is not in contact with the tablet 2, the digitizer control unit 13 treats the cursor as moving. .

When the digitizer control unit 13 determines that the detected cursor position (x _t , y _t ) has entered the first quadrant G1, the digitizer control unit 13 executes a process for enlarging the partial area PS1. As a result, the digitizer control unit 13 enlarges the partial area PS1 and redraws the partial area PS3.

Further, when the digitizer control unit 13 determines that the cursor position (x _t , y _t ) detected again has entered the second quadrant, the digitizer control unit 13 executes processing for reducing the partial area PS1. As a result, the digitizer control unit 13 reduces the partial area PS1 and redraws the partial area (not shown).

When the digitizer control unit 13 determines that the detected cursor position (x _t , y _t ) has entered the input area I and the pen 21 is in contact with the tablet 21, the digitizer control unit 13 Perform input mode processing.

  Next, a procedure of handwritten input recognition processing executed by the information processing apparatus 1 according to the fourth embodiment will be described. However, in the fourth embodiment, the processing procedures other than the partial area operation processing are the same as those in the first embodiment, and thus the description thereof is omitted. Therefore, the procedure of the partial area operation process executed in step S104 will be described next. FIG. 11 is a flowchart illustrating a procedure of partial area operation processing according to the fourth embodiment.

The digitizer control unit 13 of the information processing apparatus 1 determines whether or not the cursor position (x _t , y _t ) detected in step S203 has entered the first quadrant G1 (S601), and the cursor position (x _t , If it is determined that y _t ) has not entered the first quadrant G1 (NO in S601), it is determined to reduce the partial region PS1 (S602).

On the other hand, when the digitizer control unit 13 determines that the cursor position (x _t , y _t ) has entered the first quadrant G1 (YES in S601), the digitizer control unit 13 determines to enlarge the partial area PS1 (S603).

The digitizer control unit 13 calculates the moving speed of the cursor from the center point to the moving destination based on the difference calculated in step S103 and the time 0 to t, and determines the magnification corresponding to the calculated cursor moving speed. Then, the partial area PS1 may be enlarged or reduced by the determined magnification. Alternatively, the number of taps at the cursor position (x _t , y _t ) may be counted, and the partial area PS1 may be enlarged or reduced at a magnification corresponding to the counted number of taps. Furthermore, the ground pressure of the pen 21 at the cursor position (x _t , y _t ) may be detected, and the partial area PS1 may be enlarged or reduced at a magnification corresponding to the detected ground pressure.

Embodiment 5 FIG.
In the first to third embodiments described above, an example in which the partial area SP1 is moved by the operation of the pen 21 has been described. In the fourth embodiment, an example in which the partial area SP1 is enlarged or reduced by the operation of the pen 21 has been described. However, the present invention is not limited to this, and movement and expansion / contraction may be combined. Thus, in the fifth embodiment, an example in which the partial area SP1 is moved and enlarged / reduced by the operation of the pen 21 will be described.

  A procedure of handwriting input recognition processing executed by the information processing apparatus 1 according to the fifth embodiment will be described. However, in the fifth embodiment, the processing procedures other than the partial area operation processing are the same as those in the first embodiment, and thus the description thereof is omitted. Therefore, the procedure of the partial area operation process executed in step S104 will be described. FIG. 12 is a flowchart illustrating a procedure of partial area operation processing according to the fifth embodiment.

  The digitizer control unit 13 of the information processing apparatus 1 calculates the movement amount of the cursor (S701). Here, the movement amount of the cursor indicates, for example, the movement speed or movement distance of the cursor, and the calculation is based on the first to fourth embodiments. Further, the digitizer control unit 13 calculates the moving direction of the cursor from the center point to the moving destination based on the difference in the cursor position calculated in step S103 (S703).

Further, the digitizer control unit 13 detects the tap operation amount at the cursor position (x _t , y _t ) that is the movement destination (S704). Here, the amount of tap operation refers to, for example, the number of taps or the ground pressure of the pen 21, and the calculation is based on Examples 1 to 4.

  The digitizer control unit 13 determines the movement amount of the partial area PS1 corresponding to the movement amount of the cursor calculated in step S701 (S705), and determines the movement direction of the partial area PS1 corresponding to the movement direction of the cursor calculated in step 702. Determine (S706).

  Also, the digitizer control unit 13 determines the enlargement / reduction of the partial area PS1 corresponding to the tap operation amount detected in step S704 (S707). For example, the enlargement / reduction may be performed by deciding whether to enlarge or reduce the partial area PS1 according to the number of taps, and determining the magnification according to the degree of the ground pressure of the pen 21.

  In the fifth embodiment, an example has been described in which the amount of movement of the cursor and the amount of movement of the partial area PS1 are associated with the amount of tap operation and the expansion / contraction of the partial area PS1, respectively. The amount and the expansion / contraction of the partial area PS1 may be associated with the tap operation amount and the movement amount of the partial area PS1.

It is a block diagram which shows the structure of the information processing apparatus which concerns on this invention. FIG. 6 is a schematic diagram illustrating a display example of a partial area according to the first embodiment. It is a flowchart which shows the procedure of an input recognition process. It is a flowchart which shows the procedure of the determination process in an area | region. 6 is a flowchart illustrating a procedure of partial area operation processing according to the first embodiment. FIG. 10 is a schematic diagram for explaining a partial region according to a second embodiment. 12 is a flowchart illustrating a procedure of partial area operation processing according to the second embodiment. FIG. 10 is a schematic diagram for explaining a partial region according to a third embodiment. 12 is a flowchart illustrating a procedure of partial area operation processing according to the third embodiment. FIG. 10 is a schematic diagram illustrating a display example of a partial area according to a fourth embodiment. 12 is a flowchart illustrating a procedure of partial area operation processing according to the fourth embodiment. 12 is a flowchart illustrating a procedure of partial area operation processing according to the fifth embodiment. It is the schematic for demonstrating the conventional pen input. It is the schematic for demonstrating the conventional handwriting input.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Information processing apparatus 11 Pen input interface 12 Finger input interface 13 Digitizer control unit 14 External storage device 15 Output interface 16 Auxiliary storage device 17 RAM
18 CPU
2 tablets 21 pens

Claims (5)

An input surface for detecting the movement of the pen, a display screen for displaying a cursor, a detecting means for detecting a positional relationship with respect to the input surface of the pen, and a display position of the cursor on the display screen according to the detected positional relationship In an information processing apparatus comprising a determining means for determining,
Means for detecting the proximity of a pen to the input surface;
Means for arranging a partial area at a predetermined position on the display screen when detecting the proximity of the pen to the input surface;
An information processing apparatus comprising: control means for changing the arrangement of the partial areas in accordance with the cursor display position determined by the determining means. Means for calculating the direction in which the cursor has moved based on the display position of the cursor determined by the determining means;
A moving direction determining means for determining a direction to move the partial area according to the calculated direction;
The information processing apparatus according to claim 1, wherein the control unit arranges the partial area in accordance with the determined direction to move. First movement amount determination means for determining an amount that the cursor should move based on the display position of the cursor determined by the determination means;
A second movement amount determining means for counting the number of times of contact of the pen with the input surface and determining the amount of movement of the partial area according to the counted number of times of contact;
And further comprising at least one third movement amount determining means for detecting a ground pressure to the input surface of the pen and determining an amount to move the partial region in accordance with the detected ground pressure,
The information processing apparatus according to claim 1, wherein the control unit arranges the partial areas according to the determined amount to be moved.   The information processing apparatus according to claim 3, wherein the control unit enlarges or reduces the size of the partial area in accordance with the determined direction or amount to be moved. In a computer program for causing a computer to determine a display position of a cursor on a display screen according to a positional relationship between an input surface capable of detecting a pen movement and the pen,
Causing the computer to detect the proximity of the pen to the input surface;
When the computer detects proximity of the pen to the war record input surface, a step of arranging a partial area at a predetermined position of the display position;
And causing the computer to change the arrangement of the partial areas in accordance with the determined display position of the cursor.

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