HK1251324B - Computer readable medium and portable terminal - Google Patents

Description

Computer readable medium and portable terminal

Technical Field

The present invention relates to a program and a portable terminal.

Background Art

With the widespread use of portable terminals such as smartphones and tablet terminals, the number of games that require user input via a touch screen is increasing. With conventional game consoles, for example, various types of user input have been performed using a combination of directional keys (cross keys) and buttons. In addition, in games using a touch screen, it is conceivable to display the same directional keys and buttons as those on a conventional game console on the touch screen; however, this would not be easy to operate. Therefore, in games using a touch screen, there is a demand for a user interface that is different from that of conventional game consoles.

For example, Patent Document 1 discloses a method for switching user interface modes by using a hold operation on a touch screen (see, for example, Figures 17A to 17E). Specifically, for example, when the left thumb is continuously held on the touch screen, multiple buttons are displayed near the area where the hold is being performed. When one of these multiple buttons is selected with the left thumb, the mode is switched according to the selected button. Then, for example, the right index finger is used to perform operations in the selected mode.

Reference List

Patent Literature

Patent Document 1: Specification of U.S. Patent 8,239,784

Summary of the Invention

Problems to be solved by the invention

Using the method disclosed in Patent Document 1, switching user interface modes requires selecting one of the buttons displayed during a hold. This requires a two-step operation: a hold operation and a button selection. Furthermore, with this method, the number of buttons increases with the number of modes, increasing the area required for switching modes. Therefore, this method is not suitable for user interfaces that require rapid input of multiple types of commands.

Furthermore, in games using a touch screen, there are cases where an operation is performed to select (tap) an object (character) displayed on the touch screen. However, since finger size and habits vary between users, there is often a significant discrepancy between the position the user intended to tap and the position recognized by the system. In such cases, it is difficult for the user to perform user input as intended.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a user interface that enables various types of commands for objects to be input quickly and accurately within a small area on a portable terminal with a touch screen.

Solutions for solving problems

According to an aspect of the present invention, a program is a program for a portable terminal, which includes a touch screen having a first area for selecting a command and a second area for displaying an object, and the program enables the portable terminal to implement: a command information storage unit for storing command information representing the correspondence between commands and objects that can be used as targets of the commands with respect to multiple commands for multiple objects; a position information storage unit for storing position information representing the display position of each object in the second area; a command selection unit for selecting a command based on a state in which an operation is being performed using a user's first finger in the first area; an area definition unit for defining an area in the second area corresponding to the display position of an object that can be used as a target of the selected command as an area that can accept an operation based on the command information and the position information; and a command execution unit for executing the selected command for the object corresponding to the area in which the operation is performed, in response to an operation performed in the area that can accept the operation using the user's second finger while the operation using the first finger is continuously being performed in the first area.

Note that in the present invention, "unit" does not simply mean a physical component, but also includes cases where the functions of a "unit" are implemented by software. In addition, the functions of a single "unit" or device can be implemented by two or more physical components or devices, and two or more "units" or devices can be implemented by a single physical component or device.

Effects of the Invention

According to the present invention, a user interface that enables rapid and accurate input of various types of commands for an object within a small area on a portable terminal having a touch screen can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram illustrating an external appearance of a portable terminal 100 according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a hardware structure of the portable terminal 100 .

FIG. 3 is a block diagram illustrating a portion of the functions of the portable terminal 100 .

FIG. 4 is a diagram showing an example of command information.

FIG. 5 is a diagram showing an example of position information.

FIG. 6 is a diagram showing an example of a user interface in a state where the command selection area 130 is not being operated.

FIG. 7A is a diagram showing an example of a user interface in a state where the command selection area 130 is being operated.

FIG. 7B is a diagram showing another example of the user interface in a state where the command selection area 130 is being operated.

FIG. 8 is a diagram illustrating an example of a user interface in a state where the portable terminal 100 is held in a vertical posture.

FIG. 9 is a flowchart illustrating an example of a process related to a user interface of the portable terminal 100 .

DETAILED DESCRIPTION

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. This embodiment will be described in the context of an example of a user interface for a case where a game is executed on a portable terminal 100. However, the present invention need not be limited to games and can be applied to various user interfaces of a portable terminal having a touch screen.

FIG1 is a diagram illustrating the appearance of a portable terminal 100 according to an embodiment of the present invention. The portable terminal 100 is a computer such as a smartphone, a tablet terminal, or a portable game console. The portable terminal 100 includes a touch screen 110 that serves as both a display device and an input device. The touch screen 110 can detect a location being operated (touched) by a finger or the like. Furthermore, the touch screen 110 may include a pressure sensor or a force sensor to enable the touch screen 110 to detect a force applied to the touch screen.

The display area of touch screen 110 is provided with an object display area 120 (second area) that displays various objects (characters), and a command selection area 130 (first area) for selecting a command to be executed on an object. On portable terminal 100, when a command is selected in command selection area 130 using finger 140 (first finger, such as the left thumb), a command to be executed on an object is issued in object display area 120 using finger 150 (second finger, such as the right thumb). Command selection area 130 may be part of object display area 120.

2 is a diagram illustrating an example of a hardware structure of the portable terminal 100. The portable terminal 100 includes a processor 200, a storage device 210, a communication interface (I/F) 220, and a sensor 230 in addition to the touch screen 110.

The processor 200 implements various functions of the portable terminal 100 by executing programs stored in the storage device 210 .

The storage device 210 stores programs and data used in the portable terminal 100. For example, the storage device 210 includes volatile memory such as RAM (Random Access Memory) and non-volatile memory such as flash memory. For example, data temporarily used in the processing executed by the processor 200 is stored in the volatile memory, and the program executed by the processor 200 is stored in the non-volatile memory. For example, the program can be downloaded via the Internet and stored in the storage device 210. As another example, the program can be read from a storage medium such as a cartridge disk and stored in the storage device 210.

The communication I/F 220 is an interface for performing communication with the outside of the portable terminal 100. For example, the communication I/F 220 is an interface for transmitting and receiving data via a mobile phone communication network or a wireless LAN (Local Area Network).

Sensor 230 is a device for detecting various states of portable terminal 100. For example, sensor 230 includes a magnetic sensor, an angular velocity sensor, and a GPS (Global Positioning System) sensor. In portable terminal 100, the state of portable terminal 100 can be detected based on the detection results of sensor 230. For example, the posture (landscape or portrait) of portable terminal 100 can be detected based on the detection results of sensor 230.

FIG3 is a block diagram illustrating a portion of the functions of the portable terminal 100. The portable terminal 100 includes a command information storage unit 300, a position information storage unit 310, a command recognition unit 320, a command selection unit 330, an area definition unit 340, and a command execution unit 350. These units shown in FIG3 are implemented by the processor 200 executing a program stored in the storage device 210.

The command information storage unit 300 stores command information indicating the correspondence between commands and the objects serving as targets of the commands, for a plurality of commands related to a plurality of objects displayed on the touch screen 110. FIG4 is a diagram illustrating an example of command information. In the example shown in FIG4, the command information includes a position, a status, a command identifier, object selection information, adjustment information, and an image identifier.

"Position" is information indicating the tapped position within command selection area 130. "Situation" is information indicating the status within the game being executed. For example, the information indicating the status includes information related to the game scene or the type of object displayed on touch screen 110.

"Command identifier" is information used to identify each command executed within the game. For example, "arrow_shot" is the identifier of a command for shooting an arrow at a selected object. As another example, "vulnerary" is the identifier of a command for administering trauma medicine to a selected object to restore its health.

An "object selection command" is information used to select an object to be used as the target of a command. For example, "enemy" indicates that the target of the command is an enemy. As another example, "party" indicates that the target of the command is an ally (player or partner). Object selection information is not limited to object attributes and can be any information that enables object selection. For example, an object identifier, object name, etc. can be set as object selection information.

"Adjustment information" is information for adjusting the area in which objects can be selected within the object display area 120. For example, the adjustment information includes information for adjusting the size of the area and information for adjusting the front-to-back relationship (Z order) of the area in the depth direction. Regardless of how these objects appear on the screen, the Z order represents the priority of a tap operation when multiple objects overlap each other. For example, if the adjustment information (size) is "1.5", the area in which objects that can be selected as the target of a command is enlarged by 1.5 times compared to the normal setting. In addition, if the adjustment information (Z order) is "0" (top layer), even if a part of the target object is displayed as hidden behind another object on the screen, the area in which the object can be selected is made the same as that of the object displayed on the top layer.

The "image identifier" is an identifier of an image representing the type of command. For example, "arrow_image" is an identifier of an image of an arrow corresponding to a command for archery. As another example, "vulnerary_image" is an identifier of an image of medicine corresponding to a command for administering trauma medicine.

Referring back to Figure 3, the position information storage unit 310 stores position information indicating the position at which each object is displayed. Figure 5 is a diagram showing an example of position information. In the example shown in Figure 5, the position information includes an object identifier, name, attribute, position, and shape.

"Object identifier" is an identifier of the object displayed in the object display area 120. "Name" is information indicating the name of the object. "Attribute" is information indicating the attribute of the object. For example, "party" is information indicating that the object belongs to the alliance camp. As another example, "enemy" is information indicating that the object is an enemy. Note that the information set as an attribute is not limited to the camp (alliance/enemy) to which the object belongs, and can be any information indicating the attribute of the object. For example, information related to the ability of the object can be set as an attribute. "Position" is information indicating the position of the displayed object. For example, "position" can be the position of the center of gravity of the object. As another example, the position can be expressed in the form of relative coordinates from the upper left (origin) of the object display area 120. "Shape" is information indicating the shape of the object. For example, "shape" can be information representing an image of the object or information representing a set of polygons.

Referring back to FIG3 , the command recognition unit 320 identifies a command that can be executed under the current situation from a plurality of commands. Specifically, the command recognition unit 320 refers to the command information in the command information storage unit 300 and identifies a command whose "situation" matches the current situation as an executable command. One or more commands can be recognized. If the executable commands are fixed, the portable terminal 100 does not need to include the command recognition unit 320.

The command selection unit 330 selects a command to be executed for the object from the commands recognized by the command recognition unit 320 based on the state of the operation using the user's finger 140 (e.g., the left thumb) within the command selection area 130. Specifically, the command recognition unit 320 selects a command based on the position in the command selection area 130 where the tap is made and is being maintained (tapped and held).

Note that the user operation for causing command selection unit 330 to select a command is not limited to the above example. For example, command selection unit 330 may determine a command based on the magnitude of the force applied to command selection area 130. For example, the force applied to command selection area 130 may be detected by a pressure sensor or force sensor of touch screen 110. The "force" used as a criterion for command selection by command selection unit 330 can be any force applied to touch screen 110, without being limited to a force applied in a direction perpendicular to touch screen 110. For example, a force applied in a direction tilted relative to touch screen 110 can be used. Furthermore, there is no need to be limited to a pressure sensor or force sensor, and any sensor capable of detecting force applied to touch screen 110 can be used.

As another example, the command selection unit 330 can detect a state in which the finger 140 is located in an area near the command selection area 130 without being in contact with the touch screen 110 (referred to as a "hovering operation"), and can judge a command based on the position of the command selection area 130 specified in this manner.

The area definition unit 340 defines the area in the object display area 120 corresponding to the display position of the object serving as the command target selected by the command selection unit 330 as an area where operations can be accepted. Specifically, based on the command information stored in the command information storage unit 300, the area definition unit 340 identifies the object serving as the target of the selected command. Then, based on the position information stored in the position information storage unit 310, the area definition unit 340 defines the area corresponding to the display position of the identified object as an area where operations can be accepted. At this point, the area definition unit 340 can adjust the size of the acceptable area based on the "adjustment information" set for the command information.

If a user's finger 140 (e.g., the left thumb) is continuously operating in command selection area 130, and a user's finger 150 (e.g., the right thumb) is used to perform an operation within the acceptable area defined by area definition unit 340, command execution unit 350 executes the command selected within command selection area 130 on the object corresponding to the area where the operation is performed. For example, the operation performed by finger 150 in this case may be a tap. However, it should be noted that operations within the defined area are not limited to taps. Furthermore, the type of operation may vary depending on the selected command.

Examples of the user interface in this embodiment will be described with reference to FIGS. 6 to 8 .

FIG6 is a diagram showing an example of a user interface in a state where the command selection area 130 is not being operated. In the example shown in FIG6 , three objects 600, 601, and 602 are displayed in the object display area 120. Here, it is assumed that object 600 is an object of the player (attribute: party), and objects 601 and 602 are objects of the enemy (attribute: enemy).

When the object display area 120 is operated with a finger 150 (e.g., the right thumb) while the command selection area 130 is not being operated, a predetermined command is executed for the object. Objects 600-602 are each provided with regions 620-622 that accept operations. For example, when region 621 of enemy object 601 is tapped with a finger 150, a command is executed to attack object 601 with a knife. As another example, when a region other than regions 620 and 621 within the object display area 120 is tapped with a finger 150, a command is executed to move the player's object 600 to the tapped location.

Fig. 7A is a diagram showing an example of a user interface in a state where the command selection area 130 is being operated. In the example shown in Fig. 7A , the command selection area 130 is being operated with a finger 140 (eg, the left thumb).

In this example, a command to shoot an arrow is selected based on the position of finger 140, and an arrow image 710 representing the command is displayed in an area (third area) near the position where finger 140 is placed. Furthermore, in this example, objects 601 and 602, acting as enemies, are objects that can be used as targets for the command to shoot an arrow. Thus, compared to the case of FIG. 6 , the acceptable areas 621 and 622 for these objects 601 and 602 are larger. Furthermore, for example, if the enlarged area 621 is tapped with finger 150 (e.g., the right thumb), a command to shoot an arrow is executed on object 601 corresponding to area 621. The same operation is performed on object 602. Areas 621 and 622 are dynamically updated as the display positions of objects 601 and 602 are updated. Furthermore, operations within areas other than areas 621 and 622 within the object display area 120 can be prohibited from being accepted.

Fig. 7B is a diagram showing another example of the user interface in a state where the command selection area 130 is being operated. In the example shown in Fig. 7B , the command selection area 130 is being operated with a finger 140 (eg, the left thumb).

In this example, a command to administer trauma medicine is selected based on the position of finger 140, and an image 720 representing the medicine for this command is displayed in the area (third area) near the position where finger 140 is placed. Furthermore, in this example, object 600, acting as an ally, is the target of the command to administer trauma medicine. Consequently, compared to the example in FIG6 , acceptable area 620 for object 600 is larger. Furthermore, for example, if the enlarged area 620 is tapped with finger 150 (e.g., the right thumb), the command to administer trauma medicine is executed on object 600 corresponding to area 620. Area 620 is dynamically updated as the displayed position of object 600 is updated. Furthermore, it is possible to prohibit operations within areas other than area 620 within object display area 120 from being accepted.

As shown in Figures 7A and 7B, the area corresponding to the display position of an object that can serve as the target of the command selected in the command selection area 130 is defined as an area where operations can be accepted. Then, within the area where operations (e.g., taps) are accepted, the selected command is executed when an operation (e.g., tap) is performed on the object. As described above, using the user interface according to this embodiment, the interpretation of operations in the object display area 120 can be changed by selecting a command in the command selection area 130, and operations can be performed in the object display area 120 without releasing the finger from the command selection area 130 and performing other operations. This makes it possible to quickly and accurately input various types of commands for objects in a small area.

The shape of the defined area is arbitrary. For example, the defined area can be a shape defined by enlarging the shape of the object or an ellipse centered at the position of the object's center of gravity. In addition, the defined area can be displayed in a distinguishable form. For example, the object or area can be displayed in a display mode different from the display mode of other objects or other areas. In addition, the area where images 710 and 720 representing commands are displayed is not limited to the area adjacent to command selection area 130. For example, the area where images 710 and 720 are displayed can be an area adjacent to an acceptable area of an object that can be used as a target for a command.

FIG8 is a diagram illustrating an example of a user interface when the portable terminal 100 is held in a portrait orientation. As shown in FIG8 , in the portrait orientation, a command selection area 130 is positioned at the bottom of FIG8 . A command can be selected by sliding a finger 140 (e.g., the left thumb) leftward or rightward within the command selection area 130. Furthermore, as in the landscape orientation, commands directed to objects can be executed by operating (e.g., tapping) within the object display area 120 with a finger 150 (e.g., the right thumb).

FIG. 9 is a flowchart illustrating an example of processing related to a user interface within the portable terminal 100 .

The command selection unit 330 checks whether a tap and hold is being performed in the command selection area 130 (S901). If a tap and hold is not being performed (S901: N), the command execution unit 350 executes a command based on the normal user interface as shown in the example of FIG6 (S902).

When a tap is held in command selection area 130 (S901: Y), command recognition unit 320 recognizes a command that can be executed under the current circumstances based on the command information (S903). Then, command selection unit 330 selects a command from the recognized commands according to the position of command selection area 130 based on the command information (S904).

When a command is selected, as shown in the examples of Figures 7A and 7B, area definition unit 340 defines an area where operations can be accepted for an object that can serve as a target for the selected command (S905). In this case, area definition unit 340 may enlarge the area where operations can be accepted for the target object compared to the normal user interface (S902). Then, command execution unit 350 executes the command for the object based on a tap operation within the defined area (S906).

The user interface of the portable terminal 100 according to the present embodiment has been described above. According to the present embodiment, as shown in Figures 7A and 7B, a command can be selected based on the operation state of the finger 140 while the finger 140 (for example, the left thumb) is being tapped and held in the command selection area 130, and an area corresponding to the display position of an object that can be used as a target of the selected command can be defined as an area that can accept operations using the finger 150 (for example, the right thumb). This makes it possible to switch commands without changing the way the portable terminal 100 is held or without performing multiple steps, and also to issue instructions for executing commands using a simple operation (for example, a tap) without releasing the finger from the command selection area 130 and performing other operations. Therefore, various types of commands for objects can be input quickly and accurately in a small area.

Furthermore, according to this embodiment, a command can be selected based on the position being manipulated by finger 140 (e.g., the left thumb) within command selection area 130. Therefore, as shown in FIG7A and FIG7B , commands can be easily switched by changing the position of finger 140 within command selection area 130.

Furthermore, according to this embodiment, commands can be continuously switched according to an operation of moving a finger 140 (e.g., the left thumb) while maintaining contact with the command selection area 130. This allows for smooth switching of commands since there is no need to release the finger 140 from the touch screen 110 when switching commands.

Furthermore, according to this embodiment, a command can be selected based on the amount of force applied by finger 140 (e.g., the left thumb) within command selection area 130. Therefore, commands can be easily switched by changing the force with which finger 140 is pressed within command selection area 130.

Furthermore, according to this embodiment, commands can be continuously switched by changing the force applied by finger 140 (e.g., left thumb) while maintaining contact between finger 140 and command selection area 130. This allows for smooth switching of commands since there is no need to release finger 140 from touch screen 110 when switching commands.

Furthermore, according to this embodiment, the size of the area where operations can be accepted can be adjusted for objects that can serve as targets for selected commands. Specifically, as shown in Figures 7A and 7B, the size and context of the area where operations can be accepted can be adjusted for objects that can serve as targets for selected commands, compared to a normal user interface. This reduces operational errors and improves detection accuracy.

Furthermore, according to this embodiment, as the display position of an object that can be used as a target for a selected command is updated, the area in which operations can be accepted for the object that can be used as a target for the selected command can be updated. This improves detection accuracy and enables quick operations in user interfaces that involve updating of object positions, such as in games.

Furthermore, according to this embodiment, a tap operation can be employed as an operation to be performed within the area accepting an operation, with respect to an object that can serve as a target of a command selected within command selection area 130. This makes it possible to issue an instruction for executing a command using a simple tap operation while switching commands by operating within command selection area 130.

Furthermore, according to this embodiment, as shown in Figures 7A and 7B , an image (e.g., images 710 and 720) of the command selected within command selection area 130 may be displayed. This makes it easier to identify the selected command. Although an image representing the selected command is displayed in this embodiment, assistance for identifying the selected command is not limited to images. For example, audio (sound effects) corresponding to the selected command may be output.

Furthermore, according to this embodiment, an image representing the selected command can be displayed in an area adjacent to command selection area 130. As described above, by displaying the image in an area adjacent to command selection area 130, the selected command can be easily identified. As shown in Figures 7A and 7B, the selected command can be even more easily identified by changing the display position of image 710 or 720 according to the position of finger 140.

Furthermore, according to this embodiment, an image representing the selected command can be displayed in an area adjacent to the area where the operation can be accepted, with respect to the object that can be used as the target of the selected command. Therefore, it is easy to identify the selected command and also easy to identify the object that can be used as the target of the command.

Furthermore, according to this embodiment, commands selectable in the command selection area 130 can be switched according to the situation. This makes it possible to switch commands according to the situation in a role-playing game or the like where various situations occur.

Furthermore, according to the present embodiment, the region where an operation can be accepted can be displayed in a distinguishable form for the object that can serve as the target of the command selected in the command selection region 130. This makes it possible to easily distinguish the object that can be operated.

Furthermore, according to this embodiment, as shown in Figures 7A, 7B, and 8, a command selection area 130 can be provided at the edge of the display area of the touch screen 110. This allows commands to be selected in an area where fingers can be easily placed without interfering with operations directed to an object. Furthermore, according to this embodiment, the position of the command selection area 130 can be changed according to the posture of the portable terminal 100.

This embodiment is intended to facilitate understanding of the present invention, and is not intended to limit the interpretation of the present invention. The present invention can be modified or improved without departing from the gist of the present invention, and the present invention includes its equivalent inventions.

Reference Signs List

100 portable terminals

110 touch screen

120 Object display area

130 Command selection area

140,150 fingers

200 processors

210 Storage Device

220 Communication Interface

230 sensors

300 command information storage unit

310 Position information storage unit

320 Command Recognition Unit

330 Command selection unit

340 Area Definition Unit

350 command execution unit

600,601,602 objects

Areas 620, 621, and 622

710,720 images

Claims (16)

1. A computer-readable medium storing a program for a portable terminal, the portable terminal including a touchscreen having a first area for selecting commands and a second area for displaying objects, the program enabling the portable terminal to: The command information storage unit is used to store command information representing the correspondence between commands and objects that can be used as targets of the commands, for multiple commands targeting multiple objects. A location information storage unit is used to store location information representing the display location of each object in the second area; The command selection unit is used to select a command based on the state of the operation being performed by the user's first finger in the first area; A region definition unit is configured to define, based on the command information and the location information, a region within the second region corresponding to the display location of an object that can be used as the target of the selected command as a region capable of accepting operation; and The command execution unit is configured to execute a selected command on an object corresponding to the area where the operation was performed, in response to an operation performed by a user's second finger in the area where the operation is acceptable while the operation using the first finger is being continuously performed in the first area. 2. The computer-readable medium of claim 1, wherein the command selection unit selects a command based on the position in the first region where the first finger is performing an operation. 3. The computer-readable medium according to claim 2, wherein, The command selection unit continuously switches the selected command based on the operation of moving the first finger while maintaining contact between the first finger and the first area. 4. The computer-readable medium according to claim 1, wherein, The command selection unit selects a command based on the magnitude of the force applied by the first finger in the first region. 5. The computer-readable medium according to claim 3, wherein, The command selection unit continuously switches the selected command based on the operation of changing the force applied by the first finger while keeping the first finger in contact with the first area. 6. The computer-readable medium according to any one of claims 1 to 5, wherein, The command information includes adjustment information for adjusting the area that can be operated, and The region definition unit adjusts the region that can be operated on based on the adjustment information for each object that can be used as the target of the selected command. 7. The computer-readable medium according to any one of claims 1 to 5, wherein, As the display positions of objects that can be used as targets of the selected command are updated, the region definition unit updates the region that can accept the operation. 8. The computer-readable medium according to any one of claims 1 to 5, wherein, The operation performed using the second finger is a light tapping operation within the area where the operation is permitted. 9. The computer-readable medium according to any one of claims 1 to 5, wherein, The command selection unit displays an image representing the selected command in the third area of the touchscreen. 10. The computer-readable medium according to claim 9, wherein, The third region is the region adjacent to the first region. 11. The computer-readable medium according to claim 9, wherein, The third region is the region adjacent to the region that is capable of operation. 12. The computer-readable medium according to any one of claims 1 to 5, wherein the program further enables the portable terminal to perform: The command identification unit is used to identify, from the plurality of commands, the commands that can be executed under the current circumstances. The command selection unit selects a command from the recognized commands based on the state of the operation being performed using the first finger. 13. The computer-readable medium according to any one of claims 1 to 5, wherein, The region definition unit displays the region that can be operated on in a distinguishable manner. 14. The computer-readable medium according to any one of claims 1 to 5, wherein, The first region is the edge of the display area of the touch screen. 15. A portable terminal, comprising: A touchscreen having a first area for selecting commands and a second area for displaying objects; The command information storage unit is used to store command information representing the correspondence between commands and objects that can be used as targets of the commands, for multiple commands targeting multiple objects. A location information storage unit is used to store location information representing the display location of each object in the second area; The command selection unit is used to select a command based on the state of the operation being performed by the user's first finger in the first area; A region definition unit is configured to define, based on the command information and the location information, a region within the second region corresponding to the display location of an object that can be used as the target of the selected command as a region capable of accepting operation; and The command execution unit is configured to execute a selected command on an object corresponding to the area where the operation was performed, in response to an operation performed by a user's second finger in the area where the operation is acceptable while the operation using the first finger is being continuously performed in the first area. 16. A control method for a portable terminal, the portable terminal including a touchscreen having a first area for selecting commands and a second area for displaying objects, the control method comprising: The command information storage step is used to store command information representing the correspondence between commands and objects that can be used as targets of the commands, for multiple commands targeting multiple objects. The location information storage step is used to store location information representing the display location of each object in the second area; A command selection step is used to select a command based on the state of the operation being performed using the user's first finger in the first area; The region definition step is used to define, based on the command information and the location information, a region in the second region corresponding to the display location of an object that can be used as the target of the selected command as a region that can be operated on; and The command execution step is used to execute a selected command on the object corresponding to the area where the operation is performed, in response to an operation performed by the user's second finger in the area where the operation is acceptable while the operation of the first finger is being continuously performed in the first area.