JP4609453B2 - Graphic display control apparatus and program - Google Patents

Description

  The present invention relates to a graphic display control device for displaying graphs and graphics and a program related to the processing.

  Conventionally, scientific calculators equipped with a graph display function and a graphic display function have been used for educational calculation and technical calculation by engineers. The scientific calculator incorporates various functional operation programs. For example, by specifying a functional expression to be graphed, a graph indicating the functional expression can be drawn on the display screen.

  As one of such scientific calculators, one that displays various icons on the screen for controlling the display of graphs and figures, and moves or transforms the graph according to the selected icon is known. (For example, Patent Document 1; corresponding to all claims).

JP-A-9-282476 (page 3-9, FIG. 6)

  However, in the case of the scientific calculator as described above, icons for instructing movement or deformation of the displayed graph are displayed on the screen. For example, if the graph display function is increased, the number of icons increases accordingly. It was necessary to enlarge the screen for displaying icons and to reduce the display area of graphs and figures.

  In addition, when multiple windows linked by execution of an application are displayed on the screen, the window display disappears when the application is switched, so the function expression displayed in the window can be processed by another application. could not.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a graphic display control device and a program which are easy to use and can easily change the display of graphs and graphics.

In order to solve the above problems, the invention according to claim 1 is a graphic display control device comprising: a mathematical expression display unit that displays a mathematical expression; and a graph display part that displays a graph based on the mathematical expression and coordinate axes. A first operation for designating or selecting a coefficient constituting the mathematical formula displayed on the mathematical formula display section, and a second operation for a predetermined portion of the coordinate axis displayed on the graph display section after the first operation. A registration means for registering the coefficient designated or selected by the first operation in the predetermined portion of the coordinate axis, and after the coefficient is registered by the registration means, Coefficient changing means for changing the value of the registered coefficient when the third operation is performed on the portion, and the graph display section in conjunction with the change of the coefficient by the coefficient changing means. Is characterized in that it comprises a graphical redisplay control means for re-displaying the graph that is, a.

According to a fourth aspect of the present invention, there is provided a program according to a fourth aspect of the present invention, wherein the program is displayed on the graphic display control unit including a mathematical expression display unit that displays the mathematical expression, and a graph display unit that displays a graph and coordinate axes based on the mathematical expression. A first operation for designating or selecting a coefficient constituting the mathematical formula, and a second operation for a predetermined portion of the coordinate axis displayed on the graph display unit after the first operation, A registration function for registering the coefficient designated or selected by the first operation in the predetermined part of the coordinate axis, and a third operation for the predetermined part of the coordinate axis after the coefficient is registered by the registration function When a change is made, a coefficient change function for changing the value of the registered coefficient, and a graph displayed on the graph display unit in conjunction with the change of the coefficient by the coefficient change function It is characterized by realizing a graph redisplay control function to redisplay the.

The invention according to claim 2 is a graphic display control device comprising a function expression display section for displaying a function expression and a graph display section for displaying a graph and coordinate axes, and is displayed on the function expression display section. A first operation for designating or selecting a function formula to be selected, and a second operation for moving the function formula designated or selected by the first operation to the graph display section after the first operation. Display control means for controlling the display of the graph based on the specified or selected function expression on the graph display section when the operation is performed, and the function for the function expression displayed on the function expression display section. After the first operation, when a third operation is performed on a predetermined portion of the coordinate axis displayed on the graph display unit, the predetermined portion of the coordinate axis is designated or selected by the first operation. Registration means for registering function formula, a case where the instruction input to the predetermined portion of the coordinate axes is performed, when the function expression was Tei registered in the predetermined portion I by the said registration means, is the registered And a registered graph display control means for controlling display of a graph based on the function expression on the graph display unit.

The program according to claim 5 is a function displayed on the function expression display unit in a graphic display control device comprising a function expression display unit for displaying a function expression and a graph display unit for displaying a graph and coordinate axes. A first operation for designating or selecting an expression, and a second operation for moving the function expression designated or selected by the first operation to the graph display section after the first operation. And a display control function for controlling display of the graph based on the designated or selected function expression on the graph display section when the function expression is established, and the first function expression for the function expression displayed on the function expression display section. When a third operation is performed on a predetermined portion of the coordinate axis displayed on the graph display unit after the operation, a function formula designated or selected by the first operation on the predetermined portion of the coordinate axis When a registration function to be registered and an instruction input to the predetermined part of the coordinate axis is made, and a function expression is registered in the predetermined part by the registration function, based on the registered function expression It is characterized by realizing a registered graph display control function for controlling display of a graph on the graph display unit.

The invention according to claim 3 is a graphic display control device comprising a function expression display section for displaying a function expression and a graph display section for displaying a graph and coordinate axes, and is displayed on the function expression display section. When a first operation for specifying or selecting a function expression and a second operation for moving the function expression specified or selected by the first operation to the graph display unit are performed, the first operation is performed. Display control means for controlling display of a graph based on a function expression designated or selected by an operation on the graph display section, and registration means for registering a predetermined arithmetic processing by a third operation on a predetermined portion of the coordinate axis And when the first operation for the function expression displayed on the function expression display unit and the fourth operation for the predetermined portion of the coordinate axis are performed, Is characterized in that it comprises a calculation result graph display control means for displaying control graph of the results of executing the operation processing in the graph display unit with respect to the graph based on the selected function formula, the.

According to a sixth aspect of the present invention, there is provided a program displayed on the function expression display unit in a graphic display control device including a function expression display unit that displays a function expression and a graph display unit that displays a graph and coordinate axes. When the first operation for specifying or selecting an expression and the second operation for moving the function expression specified or selected by the first operation to the graph display unit are performed, the first operation is performed. A display control function for controlling display of a graph based on the function expression designated or selected by the graph display unit, and a registration function for registering a predetermined arithmetic processing by a third operation on a predetermined portion of the coordinate axes; Designation or selection by the first operation when the first operation on the function expression displayed on the function expression display unit and the fourth operation on the predetermined portion of the coordinate axis are performed. Is characterized in that the graph of the function with respect to the graph based on the equation result of executing the processing to realize an arithmetic result graph display control function of the display control on the graph display unit.

According to the first and fourth aspects of the invention, the first operation for designating or selecting the coefficient constituting the mathematical expression displayed on the mathematical expression display section, and the display on the graph display section after the first operation. By performing two operations, the second operation on the predetermined part of the coordinate axis being performed, the coefficient of the function expression displayed on the mathematical expression display unit is registered in the predetermined part on the coordinate axis, and then the coordinate axis The value of the registered coefficient can be changed by a simple operation of performing the second operation on the predetermined part of the graph, and the graph displayed on the graph display unit is displayed again in conjunction with the change of the coefficient. Can do. For this reason, the user can easily confirm the change in the shape of the graph accompanying the change in the registered coefficient.

According to invention of Claim 2 and 5 , after the 1st operation with respect to the function formula currently displayed on the function formula display part, 3rd operation with respect to the predetermined part of the coordinate axis currently displayed on the graph display part is carried out. If the function expression designated or selected by the first operation is registered in the predetermined part of the coordinate axis, and then an instruction operation is performed on the predetermined part of the coordinate axis, the registration is performed. It is possible to control display of a graph based on the function expression thus displayed on the graph display unit. Therefore, the user can quickly and easily display a graph corresponding to a registered function expression simply by performing an instruction operation on the predetermined part of the coordinate axis at an arbitrary timing after registering the function expression in the predetermined part of the coordinate axis. Can do.

According to the third and sixth aspects of the present invention, after the arithmetic processing is registered in a predetermined part on the coordinate axis, the function formula designated or selected in the predetermined part on the registered coordinate axis is moved. By a simple operation of performing, the arithmetic processing associated with the predetermined portion can be executed, and the graph of the execution result can be displayed on the graph display unit. Therefore, the user can easily perform arithmetic processing on the graph.

  Hereinafter, an embodiment of a graphic display control apparatus according to the present invention will be described in detail with reference to FIGS. In the following, a case where the present invention is applied to a scientific calculator having a graph and graphic display function will be described as an example. However, embodiments to which the present invention can be applied are not limited thereto.

  In the figure, the scientific calculator 1 includes an arithmetic unit (not shown) for performing arithmetic processing, an operation input key 11 for inputting numerical values, functions, and arithmetic operations, a direction key 12 for scrolling and selecting a screen, A display screen 15 for displaying input numerical values and graphs, an input pen 17, and a power source (not shown) such as a built-in battery or a solar battery are provided, for example, in a card shape by metal or resin.

  The operation input key 11 and the direction key 12 are operation input means similar to those of the conventional scientific calculator 1, and can be realized by, for example, a key switch, a touch panel, or the like.

  The display screen 15 is a portion for displaying various data necessary for using the scientific calculator 1 such as characters, codes, graph display, etc. in response to pressing of the operation input key 11. Characters and figures are displayed by dots. The The display screen 15 is an element such as an LCD (Liquid Crystal Display) or an ELD (Electronic Luminescent Display), and is realized by a combination of one or more elements.

  The scientific calculator 1 further includes a slot 16 for the storage medium 160. The storage medium 160 is a storage medium that stores functional data and the like, and is, for example, a memory card or a hard disk. The slot 16 is a device in which the storage medium 160 is detachably attached and data can be read / written from / to the storage medium 160, and is appropriately selected according to the type of the storage medium 160.

  Further, a tablet (touch panel) is integrally formed on the display screen 15 so that a pressing input by the input pen 17 can be detected.

  The scientific calculator 1 is equipped with various functions such as a calculation function, a graph function, a program function, etc., so that each function as described above can be executed by selecting an operation mode corresponding to the function to be used. It has become. For example, when the selection operation of the graph mode is performed using the operation input key 11 or the like, the operation mode is set to the graph mode, and a graphic such as a graph can be drawn in the coordinate system based on the set display range.

  FIG. 2 is a diagram for explaining the display configuration of the display screen 15. The display area of the display screen 15 is divided into a mathematical expression display area 21, a graph display area 22, and a function expression input area 23. In the mathematical expression display area 21, a function expression corresponding to the graph displayed in the graph display area 22, a mathematical expression generated by the arithmetic processing on the graph, and the like are displayed. In the function expression input area 26, a function expression or the like input by operating the operation input key 11 is displayed.

  In the graph display area 22, a graph G indicating the function formula displayed in the formula display area 21 or the function formula stored in the internal memory of the scientific calculator 1 or the storage medium 160 is displayed. Note that the x-axis 24 and the y-axis 25 are displayed in the graph display area 22 with the horizontal direction of the graph display area 22 being the x coordinate and the vertical direction being the y coordinate. Further, graph controllers 23L and 23R are provided at both ends of the x-axis 24, and graph controllers 23U and 23D (hereinafter, the graph controllers 23L, 23R, 23U and 23D are collectively referred to as "graph controller 23") at both ends of the y-axis 25. .) Is displayed.

[First Embodiment]
A first embodiment to which the present invention is applied will be described. FIG. 3 is a block diagram showing a configuration of the scientific calculator 1. As shown in the figure, the scientific calculator 1 includes a CPU (Central Processing Unit) 31, a ROM (Read Only Memory) 32, a RAM (Random Access Memory) 33, an input. Each unit includes a unit 34, a position detection circuit 35, a tablet 36, a display drive circuit 37, a display unit 38, and a storage medium reading unit 39.

  The CPU 31 executes processing based on a predetermined program in accordance with an input instruction, and performs an instruction to each functional unit, data transfer, and the like. Specifically, the CPU 31 reads a program stored in the ROM 32 in response to an operation signal input from the input unit 34 or the tablet 36, and executes processing according to the program. Then, the processing result is stored in the RAM 33, and a display signal for displaying the processing result is appropriately output to the display drive circuit 37, and display information corresponding to the display signal is displayed on the display unit 38.

  The ROM 32 stores various processing programs related to the operation of the scientific calculator 1 such as various setting processes and various arithmetic processes, applications for realizing various functions provided in the scientific calculator 1, and the like. Further, a function type display control program 321 is stored.

  The functional expression display control program 321 is a program for causing the CPU 31 to execute a functional expression display control process for maintaining the display state of the mathematical expression display area 21 even when the display screen of the display unit 38 is switched by application switching.

  The RAM 33 includes a memory area that temporarily holds various programs executed by the CPU 31, data related to the execution of these programs, and the like. In particular, a function formula data storage area 331 and a formula data storage area 332 are provided. In the function formula data storage area 331, for example, function formulas necessary for creating a graph such as a linear function, a quadratic function, a trigonometric function, and a circle are stored. The mathematical formula data storage area 332 stores mathematical formulas generated by executing arithmetic processing on the graph displayed in the graph display area 22. Here, for example, there are a root process for obtaining the intersection of the graph and the x axis, a tangent process for obtaining a tangent expression of the graph, and a ∫dx process for performing integration.

  The input unit 34 is a means for a user to input a numerical value, an execution instruction for arithmetic processing, and the like, and corresponds to the operation input key 11 and the direction key 12 in the example of FIG. A signal corresponding to the key pressed by the user is output to the CPU 31. In addition, the input unit 34 may include a pointing device such as a mouse.

  The scientific calculator 1 includes a tablet (touch panel) 36 as an input device. The tablet 36 senses a position designated (contacted) on the display unit 38 by an input pen (corresponding to the input pen 17 shown in FIG. 1), and outputs a signal corresponding to the designated (contacted) position. Device. The position detection circuit 35 connected to the tablet 36 detects the designated position coordinates on the display unit 38 based on a signal input from the tablet 36. If this tablet 36 is used, the position in the display area of the display part 38 can be designated directly. In particular, by bringing the input pen 17 into contact with the tablet 36, operations such as tap-in, drag, tap-out, and drop can be realized.

  Here, “tap-in” refers to an operation at that time when the input pen 17 is brought into contact with the display screen 15, and “tap-out” refers to an operation for releasing the input pen 17 from the display screen 15 after being brought into contact with the display screen 15. . Also, dragging refers to an operation of sliding the input pen 17 from tap-in to tap-out on the display screen 15, and drop refers to a tap-out operation after dragging.

  The display drive circuit 37 controls the display unit 38 based on a display signal input from the CPU 31 to display various screens. The display unit 38 is configured by an LCD, an ELD, or the like. The display unit 38 corresponds to the display screen 15 shown in FIG. 1 and is formed integrally with the tablet 36.

  The storage medium reading unit 39 is a functional unit that reads and writes data from and to a storage medium 160 such as a memory card or a hard disk. In FIG. 1, the slot 16 corresponds.

  FIG. 4 is a flowchart for explaining the operation of the function expression display control process executed by the CPU 31 in accordance with the function expression display control program 321. FIG. 5 is a diagram illustrating a transition example of screens displayed on the display unit 38. The flow of the functional expression display control process will be described with reference to FIGS.

  When the graph mode is instructed by the mode switching operation, the CPU 31 starts execution of a predetermined program related to the graph mode, sets the graph mode, and draws a graph such as an equation of a graph to be drawn and an input of a display range. Wait for input of the setting item. As shown in FIG. 4, when the CPU 31 detects a graph execution input (step A1), the CPU 31 performs a graph drawing process according to the function formula selected in the function formula input area 26 and the input setting item (step A2).

  Next, when the CPU 31 detects a graph calculation process execution input (step A3), the CPU 31 performs a calculation process on the graph displayed in the graph display area 22 (step A4). Further, the CPU 31 displays the mathematical formula generated by the calculation processing in the mathematical formula display area 21 and stores it in the mathematical formula data storage area 332 (step A4).

  FIG. 5A is a diagram illustrating an example display screen 501 when the tangent line G1B is displayed as a result of performing the tangent process on the graph G1A based on the function expression 261 in step A4. In the mathematical expression display area 21, a mathematical expression 211 corresponding to the tangent line G1B is displayed.

  Next, when detecting the switching of the application (step A6), the CPU 31 switches the screen display of the display unit 38 according to the execution of the application (step A7).

  Then, the CPU 31 determines whether or not a mathematical formula is stored in the mathematical formula data storage area 332 (step A8). When the mathematical formula is not stored (step A8: No), the CPU 31 ends the process. When the mathematical formula is stored (step A8: Yes), the CPU 31 holds the display of the mathematical formula display area 21 (step A4) and ends the process.

  FIG. 5B shows an example display screen 501 after application switching in step A9. The display areas of the graph display area 22 and the function expression input area 26 are switched by the execution of the application, but the expression display area 21 holds the display with the expression 211 still displayed.

  As described above, according to the first embodiment, the display of the mathematical expression display area 21 can be held even when the display of the display unit 38 is switched by switching the application. Therefore, for example, even if the application is switched during the graph processing, the display of the mathematical expression generated during the graph processing can be held, so that the mathematical expression can be processed by executing another application.

[Second Embodiment]
Next, a second embodiment to which the present invention is applied will be described. The configuration of the scientific calculator in the present embodiment is the same as that of the scientific calculator 1 shown in FIG. 3 in the first embodiment, but the ROM 32 is the ROM 60 and the RAM 33 shown in FIG. The configuration is the same as that of the RAM 70 shown in b), and the same components are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 6A, the ROM 60 stores a graph display control program 601 in particular. The graph display control program 601 is a program for causing the CPU 31 to execute a graph display control process for displaying a graph in the graph display area 22 based on a selected function formula.

  As shown in FIG. 6B, the RAM 70 includes a functional data storage area 701 in particular. The function formula data storage area 701 stores a function formula corresponding to the graph displayed on the display unit 38.

  Next, a graph display control process according to the second embodiment to which the present invention is applied will be described with reference to FIGS. FIG. 7 is an operation flow of the scientific calculator 1, and FIG. 8 is a diagram showing an example of transition of screens displayed on the display unit 38.

  When the graph mode is instructed by the mode switching operation, the CPU 31 starts execution of a predetermined program related to the graph mode, sets the graph mode, and draws a graph such as an equation of a graph to be drawn and an input of a display range. Wait for input of the setting item. Then, as shown in FIG. 7, when the CPU 31 detects the operation of the function expression input area 26 by the input pen 17 (step B1), the CPU 31 detects the function expression selected by the operation (step B2). FIG. 8A shows an example display screen 502 when the function expression 262 displayed in the function expression input area 26 in step B <b> 2 is tapped in with the input pen 17.

  When the CPU 31 detects a drag / drop operation of the functional expression 262 by the input pen 17 (step B3; FIG. 8B), it determines whether or not the drop position is in the graph display area 22 (step B4). When it is outside the graph display area 22 (step B4: No), the CPU 31 executes another process (step B6).

  When the drop position is the graph display area 22 (step B4: Yes), the CPU 31 performs a graph drawing process based on the function formula 262 (step B5). By this processing, a graph G2 corresponding to the function expression 262 is displayed as shown in FIG. On the other hand, as shown in FIG. 8C, the function formula 262 that is the object of the graph drawing process is displayed as a formula in the formula display area 21 (step B7). Then, the process ends.

  As described above, according to the second embodiment, one function expression is selected or designated from among a plurality of function expressions displayed in the function expression input area 26, and then drag operation by the input pen 17 is performed. By simply performing a simple operation such as a drop operation, a graph display based on the selected or designated function expression can be drawn and displayed in the graph display area easily and quickly. Therefore, the user can easily display the graph.

  Further, according to the second embodiment, one function expression is selected or designated by dragging with the input pen 17 from among a plurality of function expressions displayed in the function expression input area 26, and thereafter , It is determined whether the selected or specified function expression from the drag operation position to the position in the graph display area has been dropped, and the selected or specified function expression to the position in the graph display area is determined. The graph based on the selected or specified function expression can be drawn and displayed in the graph display area on condition that the drop operation of the function has been performed. The corresponding graphs can be visually displayed in continuous association.

  In addition, since the function formula corresponding to the displayed graph is displayed as a formula in the formula display area 21, it is possible to easily grasp the displayed graph and the corresponding function formula visually. can do.

  Instead of displaying a graph based on the selected or specified function expression by drag operation and drop operation by the input pen 17, a tap-in operation by the input pen 17 on the function expression input area 21 and the graph display area 26 is performed. Alternatively, a graph may be displayed based on a function expression selected or designated by a cursor operation.

[Third Embodiment]
Next, a third embodiment to which the present invention is applied will be described. The configuration of the scientific calculator in the present embodiment is the same as that of the scientific calculator 1 shown in FIG. 3 in the first embodiment, but the ROM 32 is the ROM 61 and the RAM 33 shown in FIG. The configuration is the same as that of the RAM 71 shown in b), and the same components are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIG. 9A, the ROM 61 particularly stores a processing command control program 611 and a processing command storage area 612. When the processing command control program 611 performs arithmetic processing on the graph displayed in the graph display area 22, the processing command is displayed by adding a processing command to the mathematical formula displayed in the mathematical formula display area 21 based on the arithmetic processing. This is a program for causing the CPU 31 to execute control processing. The process command storage area 612 stores a process command name corresponding to the arithmetic process.

  The arithmetic processing includes, for example, Root processing for obtaining the intersection between the graph and the x axis, Tangent processing for obtaining a tangent formula of the graph, and ∫dx processing for performing integration.

  Further, as shown in FIG. 9B, the RAM 71 includes a functional data storage area 711 in particular. The function formula data storage area 711 stores a function formula corresponding to the graph displayed on the display unit 38.

  Next, a processing command control process executed by the CPU 31 according to the processing command control program 611 will be described with reference to FIGS. FIG. 10 is an operation flow of the scientific calculator 1, and FIG. 11 is a diagram illustrating an example of transition of screens displayed on the display unit 38.

  When the graph mode is instructed by the mode switching operation, the CPU 31 starts execution of a predetermined program related to the graph mode, sets the graph mode, and draws a graph such as an equation of a graph to be drawn and an input of a display range. Wait for input of the setting item. As shown in FIG. 10, when the CPU 31 detects the operation of the function expression input area 26 by the input pen 17 (step C1), the CPU 31 detects the function expression selected by the operation (step C2). FIG. 11A shows an example display screen 503 when the function expression 513 displayed in the function expression input area 26 in step C2 is tapped in with the input pen 17.

  When the CPU 31 detects a graph execution input (step C3), the CPU 31 performs a graph drawing process according to the function formula 513 selected by the input pen 17 and the input setting item (step C4).

  FIG. 11B shows an example display screen 503 displayed at this stage. As shown in the figure, a graph G3 based on the set display range is drawn in the graph display area 22. Furthermore, the mathematical expression display area 21 displays a mathematical expression 523 corresponding to the graph G3.

  Further, when the CPU 31 detects the graph calculation process execution input (step C5), the CPU 31 executes the calculation process on the graph G3 (step C6). At this time, the mathematical formula generated in the mathematical expression display area 21 is displayed. FIG. 11C shows an example display screen 503 when the root processing, that is, the processing for obtaining the intersection of the graph G3 and the x axis is performed on the graph G3. In the formula display area 21, a formula 533 generated by the root process is displayed.

  When the CPU 31 detects the mathematical expression processing application execution input (step C7), the CPU 31 determines whether or not a processing command corresponding to the arithmetic processing performed in step C6 is stored in the processing command storage area 612 (step C8). When the corresponding process command is stored (step C8: Yes), the process command corresponding to the head of the equation 523 is inserted and displayed (step C9). When the corresponding process command is not stored (step C8: No), the CPU 31 ends the process.

  FIG. 11D is a diagram showing an example display screen 503 in step C9. For example, when the root process is executed in the graph calculation process in step C6, a command “Solve” indicating a process for obtaining the value of an arbitrary variable included in the formula 533 is inserted at the top of the formula 533 and displayed as the formula 534. The

  As described above, according to the third embodiment, processing commands can be displayed in the mathematical expression display area 21 in accordance with the arithmetic processing executed on the graph displayed in the graph display area 22. Therefore, mathematical expression processing corresponding to the arithmetic processing performed on the graph can be easily performed on the function expression displayed in the mathematical expression display area 21.

[Fourth Embodiment]
Next, a fourth embodiment to which the present invention is applied will be described. The configuration of the scientific calculator in the present embodiment is the same as that of the scientific calculator 1 shown in FIG. 3 in the first embodiment, but the ROM 32 and the ROM 33 shown in FIG. The configuration is the same as that replaced with the RAM 72 shown in b). Hereinafter, the same components are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 12A, the ROM 62 stores a variable variable control program 621 in particular. The variable variable control program 621 is a program for causing the CPU 31 to execute variable variable control processing for changing a selected coefficient in the function expression displayed in the mathematical expression display area 21.

  As shown in FIG. 12B, the RAM 72 includes a functional data storage area 721 and a variable data storage area 722, in particular. A function formula corresponding to the graph displayed on the display unit 38 is stored in the function formula data storage area 721. The variable data storage area 722 stores the value of the coefficient selected in the function formula displayed in the formula display area 21.

  Next, variable variable control processing executed by the CPU 31 in accordance with the variable variable control program 621 will be described with reference to FIGS. FIG. 13 is an operation flow of the scientific calculator 1, and FIGS. 14 and 15 are diagrams showing transition examples of screens displayed on the display unit 38.

  When the graph mode is instructed by the mode switching operation, the CPU 31 starts execution of a predetermined program related to the graph mode, sets the graph mode, and draws a graph such as a function expression of the graph to be drawn and an input of a display range. It waits for the input of the setting item concerning. Then, as shown in FIG. 13, when the CPU 31 detects an operation of the mathematical expression display area by the input pen 17 (step D1), the CPU 31 detects the functional expression selected by the operation (step D2). FIG. 14A shows an example display screen 504 when the function expression 514 displayed in the function expression input area 26 is tapped in with the input pen 17 in step D2.

  Subsequently, when the CPU 31 detects a graph execution input (step D3), the CPU 31 stores the selected function equation 514 in the function equation data storage area 721, and performs graph drawing processing according to the function equation and the input setting item (step D4). ). FIG. 14B shows an example display screen 504 displayed at this stage. As shown in the figure, a graph G4 based on the set display range is drawn on the display screen 504.

  When the CPU 31 detects an operation of the mathematical expression display area 21 by the input pen 17 (step D5), the CPU 31 detects the coefficient of the function expression 524 selected by the operation and stores the selected coefficient in the variable data storage area 722. (Step D6; FIG. 14C).

  Next, when the CPU 31 detects a drag / drop operation of a coefficient by the input pen 17 (step D7), it detects a drop position (step D8). And CPU31 judges whether the said drop position is the graph controller 23 (step D9), and when it is other than the graph controller 23 (step D9: No), other processes are performed (step D10).

  On the other hand, when the drop position is the graph controller 23 (step D10: Yes), the CPU 31 stores the graph controller 23 in association with the selected coefficient in the variable data storage area 722 (step D11). For example, as shown in FIG. 15D, when the coefficient “2” of the function expression 524 is selected and dragged and dropped at the position of the graph controller 23R, the coefficient “2” is associated with the graph controller 23R. And stored in the variable data storage area 722.

  Subsequently, when the CPU 31 detects an operation of the graph controller 23 (step D12), the CPU 31 determines whether or not the operated graph controller 23 and the coefficient are stored in association with each other in the variable data storage area 722 (step D13). When not memorize | stored (step D13: No), CPU31 performs another process (step D14). If stored (step D13: Yes), the CPU 31 adds or subtracts a predetermined value to the coefficient, and updates the function expression stored in the function expression data storage area 721 based on the updated coefficient ( Step D15). Then, a graph drawing process is performed based on the function formula (step D16).

  Here, the predetermined value is a change amount by which the coefficient increases or decreases by one operation on the graph controller 23, and is set in advance before the variable variable control process is executed. For example, when the graph controller 23U or 23R is operated, a predetermined value is added to the coefficient associated with the graph controller, and when the graph controller 23D or 23L is operated, the coefficient is associated with the graph controller. The predetermined value may be subtracted from the coefficient.

  FIG. 15E shows an example display screen 504 when the graph controller 23R is tapped in with the input pen 17. Here, of the four graph controllers 23U, 23D, 23L, and 23R, for example, assuming that the coefficient “2” of the function equation 524 is registered in the graph controller 23R, the input pen 17 on the graph controller 23R is used once. Since “1” is added by the operation, the graph display area 22 corresponds to the function expression 525 based on the coefficient updated by this one operation instead of the graph G4 (dashed line graph) being displayed. The graph G4 ′ (solid line graph) is displayed (FIG. 15 (f)).

  When one operation with the input pen 17 on the graph controller 23R is continuously performed, “1” is further added, and the function expression 525 based on the coefficient updated by this one operation is added to the graph display area 22. A graph corresponding to is displayed.

  Next, the CPU 31 monitors the end operation and determines whether or not the graph controller 23 has been operated by the input pen 17 (step D17). If it is determined that the end operation has been detected (step D17: Yes), this process ends.

  As described above, according to the fifth embodiment, the coefficient of the function formula displayed in the formula display area 21 is selected using the input pen 17, and the selected coefficient is selected from the four graph controllers 23. After registration with respect to any of the graph controllers 23U, 23D, 23L, and 23R, it is registered every time the pen 17 is operated with respect to the graph controllers 23U, 23D, 23L, and 23R in which the selected coefficient is registered. The coefficient value can be varied. Therefore, the user can easily confirm the change in the shape of the graph accompanying the change in the coefficient by operating the input pen 17.

[Fifth Embodiment]
Next, a fifth embodiment to which the present invention is applied will be described. The configuration of the scientific calculator in the present embodiment is the same as that of the scientific calculator 1 shown in FIG. 3 in the first embodiment, but the ROM 32 is the ROM 63 shown in FIG. The configuration is the same as that of the RAM 73 shown in b). Hereinafter, the same components are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 16A, the ROM 63 stores a functional expression registration control program 631 in particular. The function formula registration control program 631 registers a function formula in each of the four graph controllers 23, and then displays a graph based on the function formula registered by the operation of the graph controller 23. Is a program for causing the CPU 31 to execute.

  In addition, as shown in FIG. 16B, the RAM 73 includes a functional data storage area 731 in particular. A plurality of sets of graph controllers 23 and function expressions are stored in the function expression data storage area 731 in association with the function expression registration control process of the CPU 31.

  Next, with reference to FIGS. 17 and 18, a function formula registration control process executed by the CPU 31 in accordance with the function formula registration control program 631 will be described. FIG. 17 is an operation flow of the scientific calculator 1, and FIG. 18 is a diagram showing an example of transition of screens displayed on the display unit 38.

  When the graph mode is instructed by the mode switching operation, the CPU 31 starts execution of a predetermined program related to the graph mode, sets the graph mode, and draws a graph such as a function expression of the graph to be drawn and an input of a display range. It waits for the input of the setting item concerning. Then, as shown in FIG. 17, when the CPU 31 detects the operation of the function expression input area 26 by the input pen 17 (step E1), the CPU 31 detects the function expression selected by the operation (step E2). FIG. 18A shows an example display screen 505 when the function formula 515 displayed in the function formula input area 26 is tapped in with the input pen 17.

  Subsequently, when the CPU 31 detects a drag / drop operation of the selected function expression (step E3), it detects a drop position (step E4). Then, the CPU 31 determines whether or not the drop position is on any of the four graph controllers 23 (step E5). If the drop position is other than the graph controller 23 (step E5: No), other processing is executed. (Step E6).

  On the other hand, if the drop position is on any of the four graph controllers 23 (step E5: Yes), the graph controller 23 and the selected function expression are associated with each other and stored in the function expression data storage area 731 (step E7). For example, as shown in FIG. 18B, after the function expression 515 is selected and dragged, if the function expression 515 is dropped at the position of the graph controller 23R among the four graph controllers 23, for example, the drop The function formula 515 and the graph controller 23R are associated with each other and stored in the function formula data storage area 731.

  Next, when the CPU 31 detects an operation of the graph controller 23 (step E8; FIG. 18C), whether or not a function expression associated with the operated graph controller 23 is stored in the function expression data storage area 731. Is determined (step E9). When the function formula is not stored (step E9: No), the CPU 31 executes another process (step E11). When the corresponding function formula is stored (step E9: Yes), the CPU 31 performs a graph drawing process based on the function formula (step E10).

  FIG. 18D is a diagram showing an example display screen 505 at this stage. The graph display unit 22 displays a graph G5 based on the function formula stored in the function formula data storage area 731 in association with the operated graph controller 23. Further, a function formula 525 corresponding to the graph G5 is displayed in the formula display area 21.

  Next, the CPU 31 monitors the end operation and determines whether or not the graph controller 23 is operated by the input pen 17 (step E12). If it is determined that the end operation has been detected (step E12: Yes), this process ends.

  As described above, according to the fifth embodiment, function expressions can be registered in the respective graph controllers 23. Accordingly, after the user registers the function expression in the graph controller 23, the user simply performs a tap operation on the registered graph controller 23, and the graph corresponding to the function expression registered in the graph controller 23 can be quickly and easily performed. Can be displayed.

[Sixth Embodiment]
Next, a sixth embodiment to which the present invention is applied will be described. Note that the configuration of the scientific calculator in the present embodiment is the same as that of the scientific calculator 1 shown in FIG. 3 in the first embodiment, but the ROM 32 is the ROM 64 shown in FIG. The configuration is the same as that of the RAM 74 shown in b), and the same components are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIG. 19A, the ROM 64 particularly stores a graph calculation control program 641 and a graph calculation storage area 642. The graph calculation control program 641 performs a graph calculation control process for performing a calculation process registered on a graph based on the function expression by dragging and dropping the function expression to the graph controller 23 in which various calculation processes are registered. It is a program for causing the CPU 31 to execute. In the graph calculation storage area 642, each graph controller 23 and various calculation processes are stored in association with each other. For example, the graph controller 23R and the tangent process, and the graph controller 23U and the integration process are stored in association with each other. Here, the tangent process is a process for obtaining a tangent of the graph, and the integration process is a process for performing integration on the graph.

  Further, as shown in FIG. 19B, the RAM 74 includes a functional data storage area 741 in particular. The function formula data storage area 741 stores a function formula corresponding to the graph displayed on the display unit 38.

  Next, with reference to FIGS. 20 and 21, the graph calculation control processing executed by the CPU 31 in accordance with the graph calculation control program 641 will be described. FIG. 20 is an operation flow of the scientific calculator 1, and FIG. 21 is a diagram illustrating an example of transition of screens displayed on the display unit 38.

  When the graph mode is instructed by the mode switching operation, the CPU 31 starts execution of a predetermined program related to the graph mode, sets the graph mode, and draws a graph such as a function expression of the graph to be drawn and an input of a display range. It waits for the input of the setting item concerning. Then, as shown in FIG. 20, when detecting the graph controller setting execution input (step F1), the CPU 31 displays a graph controller calculation processing setting screen on the display unit 38 (step F2). Although the graph controller calculation processing setting screen is not shown, it is a setting screen for the user to register arbitrary calculation processing in each graph controller 23. Then, the CPU 31 stores the setting contents in the graph processing storage area 642 (step F4).

  Subsequently, when the CPU 31 detects an operation of the function expression input area 26 by the input pen 17 (step F5), the CPU 31 detects the function expression selected by the operation (step F6). FIG. 21A shows an example display screen 506 when the function formula 516 displayed in the function formula input area 26 is tapped in with the input pen 17 in step F6.

  Subsequently, when the CPU 31 detects the drag / drop operation of the selected function expression (step F7), it detects the drop position (step F8). Then, the CPU 31 determines whether or not the drop position is the graph controller 23 (step F9). If the drop position is other than the graph controller 23 (step F9: No), other processing is executed (step F11).

  On the other hand, when the drop position is the graph controller 23 (step F9: Yes), it is determined whether or not the graph controller is associated with the arithmetic processing and stored in the graph processing storage area 642 (step F10). When there is no corresponding calculation process (step F10: No), the CPU 31 executes another process (step F11).

  On the other hand, when there is a corresponding calculation process (step F10: Yes), the CPU 31 performs a graph drawing process based on the selected function formula (step F12), and further executes the corresponding calculation process on the graph ( Step F13).

  Specifically, as shown in FIG. 21B, if, for example, tangent processing is registered in advance in the graph controller 23R, the function equation 516 is selected and dragged, and then the position of the graph controller 23R is selected. When the selected function formula 516 is dropped, a corresponding graph G6A is displayed based on the function formula 516 as shown in FIG. At the same time, a tangent process is performed on the displayed graph G6A, a corresponding tangent line G6B is drawn based on the executed tangent process, and a function formula 526 corresponding to the drawn tangent line G6B is expressed by a mathematical formula. It is displayed in the display area 21.

  Similarly, if integration processing is registered in advance in the graph controller 23L, for example, when a function formula is selected and dragged, the selected function formula 516 is dropped at the position of the graph controller 23L. A corresponding graph is displayed based on the function expression 516. At the same time, an integration process for the displayed graph is executed. Based on the executed integration process, an integral drawing process for the displayed graph is performed, and a function expression 526 corresponding to the drawn integration is performed. Is displayed in the mathematical expression display area 21.

  As described above, according to the sixth embodiment, a calculation process is registered in one of the graph controllers 23, and then a function is placed at any position of the graph controller 23 in which the calculation process is registered. The graph corresponding to the function expression can be displayed by a simple operation of dropping the expression, and at the same time, the arithmetic processing associated with the graph controller 23 is executed on the displayed graph, Other graph drawing processing can be performed on the graph. Therefore, the graph based on the function formula and the graph based on the arithmetic processing registered in the controller can be associated with each other and drawn or displayed simultaneously.

  Although the first to sixth embodiments have been described above, the graphic display control device according to the present invention is not limited to the above-described embodiments, and does not depart from the gist of the present invention. Of course, various changes can be made.

  For example, in each of the above-described embodiments, the function formula input area 26 in FIG. 2 or the display unit 38 in FIG. 3 which is a function formula display unit for displaying a plurality of registered function formulas and a graph are displayed. 2 is the graph display area 22 of FIG. 2 or the display section 38 of FIG. 3, and the formula display area 21 of FIG. 2 or the display section 38 of FIG. Although an example is shown in which two display units are provided on a single display panel, the present invention is not limited to this, and the three display units may be arranged and provided at physically separated positions. .

The figure which showed an example of the external appearance of a scientific calculator. The figure for demonstrating the display structure of a display screen. The block diagram which shows the structure of a scientific calculator. The flowchart for demonstrating operation | movement of the function type | formula display control processing in 1st Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 1st Embodiment. The figure which shows the data structure of ROM and RAM in 2nd Embodiment. The flowchart for demonstrating operation | movement of the graph display control process in 2nd Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 2nd Embodiment. The figure which shows the data structure of ROM and RAM in 3rd Embodiment. The flowchart for demonstrating the operation | movement of the process command control process in 3rd Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 3rd Embodiment. The figure which shows the data structure of ROM and RAM in 4th Embodiment. The flowchart for demonstrating the operation | movement of the variable variable control process in 4th Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 4th Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 4th Embodiment following FIG. The figure which shows the data structure of ROM and RAM in 5th Embodiment. The flowchart for demonstrating operation | movement of the function type | formula registration control process in 5th Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 5th Embodiment. The figure which shows the data structure of ROM and RAM in 6th Embodiment. The flowchart for demonstrating operation | movement of the graph process control process in 6th Embodiment. The figure which shows the example of a transition of the screen displayed on the display part in 6th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Scientific calculator 11 Operation input key 12 Direction key 15 Display screen 21 Formula display area 22 Graph display area 23 Function formula 16 Slot 17 Input pen 31 CPU
32 ROM
321 Function expression display control program 33 RAM
331 Function formula data storage area 332 Formula data storage area 34 Input unit 35 Position detection circuit 36 Tablet 37 Display drive circuit 38 Display unit 39 Storage medium reading unit 160 Storage medium

Claims (6)

In a graphic display control device comprising a mathematical expression display section for displaying mathematical expressions, and a graph display section for displaying a graph and coordinate axes based on the mathematical expressions,
A first operation for designating or selecting a coefficient constituting the mathematical expression displayed on the mathematical expression display section, and a second operation for a predetermined portion of the coordinate axes displayed on the graph display section after the first operation. Registration means for registering the coefficient designated or selected by the first operation in the predetermined part of the coordinate axis,
Coefficient changing means for changing the value of the registered coefficient when a third operation is performed on the predetermined portion of the coordinate axis after the coefficient is registered by the registration means;
Graph redisplay control means for redisplaying the graph displayed on the graph display unit in conjunction with the change of the coefficient by the coefficient changing means,
A graphic display control device comprising: In a graphic display control device comprising a function expression display unit for displaying a function expression, and a graph display unit for displaying a graph and coordinate axes,
A first operation for specifying or selecting a function expression displayed on the function expression display section, and a function expression specified or selected by the first operation after the first operation is displayed in the graph. Display control means for controlling display of a graph based on the designated or selected function formula on the graph display unit when a second operation for moving to the display unit is performed;
When a third operation is performed on a predetermined part of the coordinate axis displayed on the graph display unit after the first operation on the function formula displayed on the function formula display unit, the coordinate axis Registration means for registering the function expression designated or selected by the first operation in a predetermined portion;
In a case where the instruction input with respect to the predetermined portion of the coordinate axes is performed, when the function expression was Tei registered in the predetermined portion I by the said registering means, said graph a graph based on the registered function expression Registered graph display control means for controlling display on the display unit;
A graphic display control device comprising: In a graphic display control device comprising a function expression display unit for displaying a function expression, and a graph display unit for displaying a graph and coordinate axes,
A first operation for designating or selecting a function formula displayed on the function formula display unit and a second operation for moving the function formula designated or selected by the first operation to the graph display unit are performed. Display control means for controlling display of a graph based on the function expression designated or selected by the first operation on the graph display unit,
Registration means for registering a predetermined calculation process by a third operation on a predetermined portion of the coordinate axis;
The function formula designated or selected by the first operation when the first operation on the function formula displayed on the function formula display unit and the fourth operation on the predetermined portion of the coordinate axis are performed. Calculation result graph display control means for controlling the graph display unit to display a graph of the result of executing the calculation processing on the graph based on
A graphic display control device comprising: In a graphic display control device comprising a mathematical expression display section for displaying mathematical expressions, and a graph display section for displaying a graph and coordinate axes based on the mathematical expressions,
A first operation for designating or selecting a coefficient constituting the mathematical expression displayed on the mathematical expression display section, and a second operation for a predetermined portion of the coordinate axes displayed on the graph display section after the first operation. A registration function for registering the coefficient designated or selected by the first operation in the predetermined part of the coordinate axis,
A coefficient changing function for changing the value of the registered coefficient when a third operation is performed on the predetermined portion of the coordinate axis after the coefficient is registered by the registration function;
A graph re-display control function for re-displaying the graph displayed in the graph display unit in conjunction with the coefficient change by the coefficient change function;
A program to realize In a graphic display control device comprising a function expression display section for displaying a function expression and a graph display section for displaying a graph and coordinate axes,
A first operation for specifying or selecting a function expression displayed on the function expression display section, and a function expression specified or selected by the first operation after the first operation is displayed in the graph. A display control function for controlling display of the graph based on the designated or selected function formula on the graph display unit when a second operation for moving to the display unit is performed;
When a third operation is performed on a predetermined part of the coordinate axis displayed on the graph display unit after the first operation on the function formula displayed on the function formula display unit, the coordinate axis A registration function for registering the function expression designated or selected by the first operation in a predetermined portion;
When an instruction is input to the predetermined portion of the coordinate axis, and a function formula is registered in the predetermined portion by the registration function, a graph based on the registered function formula is displayed in the graph display unit. Registered graph display control function to control display in
A program to realize In a graphic display control device comprising a function expression display section for displaying a function expression and a graph display section for displaying a graph and coordinate axes,
A first operation for designating or selecting a function formula displayed on the function formula display unit and a second operation for moving the function formula designated or selected by the first operation to the graph display unit are performed. A display control function for controlling display of a graph based on the function expression designated or selected by the first operation on the graph display unit,
A registration function for registering a predetermined calculation process by a third operation on a predetermined portion of the coordinate axis;
The function formula designated or selected by the first operation when the first operation on the function formula displayed on the function formula display unit and the fourth operation on the predetermined portion of the coordinate axis are performed. A calculation result graph display control function for controlling the graph display unit to display a graph of a result of executing the calculation processing on the graph based on
A program to realize

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