JP2012181845A - Screen display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen display apparatus having an interface which can easily search desired information from a large volume of information.SOLUTION: A screen display apparatus comprises: an operating information receiving unit that receives operating information, indicating an inclination direction and an inclination angle of a joystick, from the joystick; and a screen controller that controls scrolling and zooming of a screen display, based on the operating information received by the operating information receiving unit. The screen controller performs a process for scrolling a screen, according to the inclination direction and the inclination angle of the joystick and performs a process for zooming-out of a screen display (S32), when it is detected that the joystick is inclined in the same direction continuously for a prescribed period, with the inclination angle being greater than a prescribed threshold D1 (S28) until it is detected that the inclination angle of the joystick becomes equal to or smaller than the prescribed threshold D1 (S24), or until a zoom rate becomes a predetermined minimum zoom rate ("YES" in S30).

Description

  The present invention relates to a screen display device that displays information on a screen of a computer or the like, and more particularly to a technique for displaying a large-capacity image such as a map.

  Conventionally, scrolling is known as a technique for displaying large-capacity information that does not fit on one screen. Scrolling is a technique for moving display content up, down, left, and right in order to display a portion that cannot be displayed on the screen. When browsing a large amount of information by scrolling, the amount of scrolling increases, which is troublesome. Also, if the scrolling speed is increased, the display contents cannot be grasped during scrolling.

  As a technique for changing the scale of an image displayed on the screen, a technique for changing the zoom is known. Enlarging the scale is called “zoom-in”, and reducing the scale is called “zoom-out”. By zooming out the screen display, it is possible to display a portion that cannot be displayed in the screen.

  In many conventional screen display devices, scrolling and zooming are configured as separate interfaces. Therefore, in order to find desired information from a large-capacity image by scrolling and zooming operations, it is necessary to perform switching operations between scrolling and zooming many times, and the operation is complicated. For example, it is necessary to zoom out again to search the approximate position of the desired information while zooming out the screen display and viewing the zoomed out display contents, and then searching for the information in detail. .

As a method for solving the complexity of the above operation, Non-Patent Document 1 discloses a method in which scrolling and zoom are associated with each other. This document discloses an interface that automatically adjusts the zoom level according to the speed of the scroll operation. The basic concept proposed by this document is to make the apparent speed on the screen constant regardless of the actual moving speed in the information space. This solves the problem that eyes cannot catch up by scrolling. Also, this document proposes to calculate the zoom level as a power of the input value as a device for preventing a sudden zoom-out when the scrolling speed is increased.
"Efficient navigation by automatic zooming according to movement speed" Takeo Igarashi, Ken Hinckley, Workshop on Interactive Systems and Software VIII (Japan Software Science Society WISS2000) pp.57-66, December 2000

  However, since the technique of Non-Patent Document 1 described above makes the apparent speed on the screen constant, the information space cannot be scrolled at a speed higher than the scroll speed input by the input device. For example, if the input value of the scroll speed is doubled, it is possible to scroll the information space at twice or more speed by simply scrolling at the same speed on the screen display with a zoom of 1/2. Do not mean. Therefore, it takes a very long time to search for desired information from a very large amount of information such as a map.

  Also, if you set the relationship between the input value of the input device and the scroll speed so that you can access information that is far away in the information space in an appropriate time, the input range of the input device is limited. Due to the gap between the range and the size of the information space, a phenomenon occurs in which the zoom is sensitively changed by a slight change in the input value. In particular, when useful information is provided in the same manner on a zoomed-in screen display or a zoomed-out screen display, such as a map, there is a practical problem if the zoom rate changes frequently.

  SUMMARY OF THE INVENTION In view of the above background, an object of the present invention is to provide a screen display device having an interface capable of easily retrieving desired information from a large amount of information.

  The screen display device of the present invention includes an operation information receiving unit that receives operation information indicating the scroll direction and speed from an input device, and a process of scrolling the screen display based on the operation information received by the operation information receiving unit. And a screen control unit that performs processing for changing the zoom rate based on the time scrolled in the same direction and the scrolling speed.

  In this way, by using the information about the scrolled time obtained from the operation information indicating the scroll direction and its speed, the zoom ratio is automatically changed by performing the process of changing the zoom rate. A rate change is made. In addition, the zoom rate is not proportional to the scrolling speed, but is controlled according to the scrolling speed and the time of scrolling in the same direction. Therefore, the zoom rate frequently changes according to the change in the scrolling speed. This makes it possible to prevent this.

  In the screen display device of the present invention, the screen control unit performs a process of zooming out the screen display when detecting that the scrolling speed is greater than a predetermined threshold continuously for a predetermined time, and the zoom-out process includes: It may be continued until it is detected that the scrolling speed is equal to or lower than the threshold value or until a predetermined minimum zoom ratio is reached.

  Thus, the zoom-out process is performed when the scroll speed exceeds a predetermined threshold continuously for a predetermined time, and the zoom-out process stops when the scroll speed falls below the predetermined threshold. It is possible to change the zoom ratio to an arbitrary zoom ratio by the operation of changing the zoom ratio, and it is possible to scroll at the zoom ratio at the time of stopping. According to the present invention, the zoom-out process is performed only by an operation of scrolling at a speed exceeding a predetermined threshold value continuously for a predetermined time. This operation is thought to be performed with the intention of the user to see information at a distance, so when searching for information in the vicinity of the information currently being browsed, the zoom rate changes against the user's intention. This makes it easy to search for information.

  In the screen display device of the present invention, the screen control unit detects that the scrolling speed is continuously below a second threshold value that is smaller than the predetermined threshold value for a predetermined time in a state where the screen display is zoomed out. The zoom-in process may be continued until the scroll speed becomes greater than the second threshold value or a predetermined maximum zoom rate.

  In this way, the zoom-in process is performed when the scroll speed becomes equal to or lower than the second threshold continuously for a predetermined time. When the scroll speed becomes larger than the second threshold, the zoom-in process is stopped. It is possible to change to an arbitrary zoom ratio by the changing operation, and it is possible to scroll at the zoom ratio at the time of stopping. Further, when the scrolling speed is larger than the second threshold value and not more than the predetermined threshold value, peripheral information can be scrolled in a state where the zoom rate is fixed. Furthermore, according to the present invention, the zoom-in process is performed by an operation of setting the scroll speed to be equal to or lower than the second threshold value continuously for a predetermined time. Since this operation is considered to be performed when the user wants to search for nearby information, the screen display is zoomed in according to the user's intention to search for nearby information.

  In the screen display device of the present invention, the screen control unit may control the zoom-in or zoom-out speed according to the scroll speed.

  Thus, by making the zoom-in or zoom-out speed correspond to the scrolling speed, it is possible to perform a zoom ratio changing process in accordance with the user's intention.

  In the screen display device of the present invention, the operation information receiving unit receives a signal indicating a tilt direction of the joystick as the operation information indicating the scroll direction, and sets the tilt angle of the joystick as the operation information indicating the scroll speed. A signal may be received.

  Thus, operation information indicating the direction and speed of scrolling can be received in accordance with the direction and angle of tilt of the joystick.

  In the screen display device of the present invention, the screen control unit obtains a determination value for determining whether or not to perform zoom change processing based on the time scrolled in the same direction and the scroll speed, and the determination value The zoom-out process and the zoom-in process are determined in advance. The zoom-out process and the zoom-in process are determined in advance. You may carry out within the range of zoom rate.

  Since the zoom-out process is performed when the determination value obtained based on the scroll time and the scroll speed exceeds a predetermined threshold, the zoom time is changed to an arbitrary zoom ratio by changing the scroll time and speed. Is possible. In addition, since the zoom-out process and the zoom-in process are performed within a predetermined zoom rate range, when the screen display is a predetermined minimum zoom rate, the determination value is equal to or less than a predetermined threshold value. However, zoom-in processing is not performed. Therefore, when searching for nearby information without increasing the scrolling speed, the zoom rate is not changed against the user's intention, and it is easy to search for information.

  In the screen display device of the present invention, the screen control unit obtains a determination value for determining whether or not to perform zoom change processing based on a cycle when scrolling is repeatedly performed in the same direction and the scroll speed, When the determination value is larger than a predetermined threshold value, a process of zooming out the screen display is performed. When the determination value is equal to or smaller than the predetermined threshold value, a process of zooming in the screen is performed. The zoom-out process and the zoom-in process are performed in advance. You may perform within the range of the defined zoom rate.

  Since the zoom-out process is performed when the determination value obtained based on the cycle when scrolling repeatedly and the scrolling speed exceeds a predetermined threshold, any zoom can be performed by changing the scrolling period and speed. It is possible to change the rate. In addition, since the zoom-out process and the zoom-in process are performed within a predetermined zoom rate range, when the screen display is a predetermined minimum zoom rate, the determination value is equal to or less than a predetermined threshold value. However, zoom-in processing is not performed. Therefore, when searching for nearby information without increasing the scrolling speed, the zoom rate is not changed against the user's intention, and it is easy to search for information.

  The screen display device of the present invention includes a planar coordinate input device that detects a contact position of a finger or a pointing device, and the operation information receiving unit traces the planar coordinate input device as operation information indicating the scroll direction. A signal indicating the direction, and a signal indicating the speed of tracing the planar coordinate input device as operation information indicating the speed of scrolling. The screen control unit repeatedly traces the planar coordinate input device. The determination value may be obtained based on the period when the finger or the pointing device leaves the planar coordinate input device.

  As described above, the zoom-out process is performed when the determination value obtained based on the period when the planar coordinate input device is repeatedly traced in the same direction and the speed when the finger is released exceeds a predetermined threshold value. It is possible to change to an arbitrary zoom ratio by an operation of tracing the planar coordinate input device. The determination value is a value that is defined so as to increase as the speed of the finger or the pointing device when the finger leaves the planar coordinate input device increases and to increase as the period of tracing the planar coordinate input device decreases. According to the present invention, zoom-out processing is not performed until the planar coordinate input device is repeatedly traced in the same direction. Since this operation is thought to be performed with the intention of the user to view distant information, when searching for information near the information currently being browsed, the zoom rate changes against the user's intention. This makes it easy to search for information. When the finger or pointing device is released, the judgment value for whether or not to zoom out the screen display is obtained based on the speed of the finger when the finger or pointing device is released from the planar coordinate input device. When the speed of is high, the zoom is up. When the screen displayed on the screen is viewed as a piece of paper, an interface that matches the feeling of “throwing” the paper can be provided. As the planar coordinate input device, for example, a touch pad or a touch panel can be used.

  In the screen display device of the present invention, the screen control unit has a speed of tracing the planar coordinate input device when a finger or a pointing device touches the planar coordinate input device during zoom-in or zoom-out processing is zero. When this is detected, the zoom-in or zoom-out process may be stopped until the finger or pointing device leaves the touchpad.

  With this configuration, the screen display can be fixed and scrolled at an arbitrary zoom rate. The operation in which the speed of tracing the planar coordinate input device when the planar coordinate input device is touched is an operation in which the screen during the zoom rate changing process is touched while being pressed from above. Accordingly, the change in the zoom ratio is stopped as if the displayed screen is pressed, and scrolling can be performed in the stopped state, so that an interface suitable for the user's feeling can be provided.

  In the screen display device of the present invention, the screen control unit may control the zoom-in or zoom-out speed according to the determination value.

  In this way, by making the zoom-in or zoom-out speed correspond to the determination value, it is possible to perform a zoom ratio changing process in accordance with the user's intention.

  In the screen display device of the present invention, a point indicating a predetermined position in the image is set in the image to be displayed, and the screen control unit includes the point in a zoomed-out state. When zooming in on the screen display, the position of the image may be adjusted so that the point is at the center of the screen.

  Thus, by zooming in so that the point indicating the predetermined position is at the center of the screen, information near the point can be easily accessed.

  The screen display method of the present invention includes an operation information receiving step for receiving operation information indicating a scroll direction and its speed from an input device, and a process for scrolling the screen display based on the operation information received in the operation information receiving step. And a screen control step for performing processing for changing the zoom ratio based on the time scrolled in the same direction and the scrolling speed.

  With this configuration, as with the screen display device of the present invention, the zoom rate can be automatically changed by performing a scroll operation, and the zoom rate is prevented from frequently changing according to the change in the scroll speed. Control becomes possible. Various configurations of the screen display device of the present invention can be applied to the screen display method of the present invention.

  The program according to the present invention is a program for displaying a screen based on operation information received from an input device, and receives an operation information indicating a scroll direction and its speed from the input device to a computer. And a process of scrolling the screen display based on the operation information received in the operation information receiving step, and a process of changing the zoom ratio based on the time scrolled in the same direction and the scroll speed. The screen control step is executed.

  With this configuration, as with the screen display device of the present invention, the zoom rate can be automatically changed by performing a scroll operation, and the zoom rate is prevented from frequently changing according to the change in the scroll speed. Control becomes possible. Various configurations of the screen display device of the present invention can be applied to the program of the present invention.

  A screen display device according to another aspect of the present invention includes a touch panel that detects a contact position of a finger in the screen, a process of scrolling the screen display based on the contact position, and the finger touches continuously for a predetermined time. And a screen control unit that performs a process of zooming out the screen display while scrolling based on the contact position when it is detected.

  In this way, when the finger is in contact with the touch panel for a predetermined period of time, it is considered that the user has an intention to view distant information, so by performing zoom-out processing and scroll processing The information space can be quickly scrolled according to the user's intention.

  A screen display device according to another aspect of the present invention includes a touch panel that detects a contact position of a finger in the screen, a process of scrolling the screen display based on the contact position, and the finger touches continuously for a predetermined time. A first mode that performs a process of zooming out the screen display while scrolling based on the contact position, and a scrolling process only when the finger is in contact. A screen control unit having two modes, and a switching unit that switches between the first mode and the second mode.

  As described above, the configuration in which the first mode in which the zoom-out process and the scroll process are simultaneously performed and the scroll process in which only the scroll process is performed can be switched, so that an appropriate scroll process can be performed according to the intention of the user. it can. Further, in the first mode, when the finger is in contact with the touch panel for a predetermined time continuously, the information space can be quickly scrolled according to the user's intention by performing the zoom-out process and the scroll process.

  In the screen display device of the present invention, the switching unit may use a switch for selecting either the first mode or the second mode.

  Thus, by switching the first mode and the second mode with the switch, the user can easily and reliably switch the mode.

  In the screen display device of the present invention, the switching unit may switch between the first mode and the second mode depending on whether the contact position is included in a predetermined area of the touch panel. Good.

  Thus, by switching between the first mode and the second mode according to the contact position of the finger in the screen, the mode can be switched only by an operation on the touch panel.

  In the screen display device of the present invention, the switching unit sets the second mode when the contact position is a predetermined area including the center of the screen, and the contact position is a peripheral area of the screen other than the predetermined area. In some cases, the first mode may be used.

  As described above, when the finger contact is detected in the peripheral area, it is considered that the user has an intention to see the map of the adjacent area. By performing the processing, it is possible to quickly scroll to a screen displaying a desired area.

  In the screen display device of the present invention, the switching unit may switch between the first mode and the second mode depending on whether or not two or more fingers are in contact with the touch panel.

  As described above, by switching between the first mode and the second mode according to the number of fingers touching the touch panel, the mode can be switched only by an operation on the touch panel.

  In the screen display device of the present invention, the touch panel detects a pressing force with which a finger presses the touch panel, and the switching unit switches between the first mode and the second mode according to the pressing force. Also good.

  In this way, by switching between the first mode and the second mode according to the pressing force of the finger when touching the touch panel, the mode can be switched only by an operation on the touch panel.

  In the screen display device of the present invention, the switching unit switches between the first mode and the second mode depending on whether or not the finger has moved more than a predetermined threshold while the finger is in contact with the touch panel. You may switch.

  Thus, by switching between the first mode and the second mode according to the movement of the finger in the screen, the mode can be switched only by an operation on the touch panel.

  In the screen display device of the present invention, the screen control unit may continue the zoom-out process in the first mode until a predetermined minimum zoom rate is reached.

  Thus, by zooming out until the predetermined minimum zoom rate is reached and stopping the zoom-out process at the minimum zoom rate, it is possible to scroll on the screen with the minimum zoom rate.

  In the screen display device of the present invention, the screen control unit may change a scrolling speed according to a zoom rate.

  In this way, by changing the scroll speed according to the zoom rate, it is possible to obtain a scroll operation feeling suitable for each zoom rate.

  In the screen display device of the present invention, when the screen control unit detects that the finger is released from the touch panel in a state where the screen display is zoomed out, the screen display unit displays the screen until a predetermined maximum zoom rate is reached. You may zoom in.

  Thus, the zoom ratio can be restored by a simple operation of releasing the finger from the touch panel.

  In the screen display device of the present invention, when performing the zoom-in process, the screen control unit may perform a process of scrolling based on the contact position last detected before the finger is released from the touch panel. .

  Even after the finger is released in this way, by scrolling based on the position where the finger was last detected, it seems that scrolling continues during zooming in due to the inertia of scrolling in the zoomed out state. Can realize a comfortable operation.

  In the screen display device of the present invention, when it is detected that the finger is removed from the touch panel, an area displayed on the screen when the maximum zoom rate is reached is predicted, and the screen is zoomed out. The predicted area may be indicated.

  With this configuration, the position of the entire screen displayed at the maximum zoom rate can be grasped.

  The screen display device of the present invention may include a notification unit that notifies the user of switching between the first mode and the second mode.

  Thus, by notifying the user of the switching between the first mode and the second mode, the user can know whether or not scrolling with zoom is started.

  A screen display device according to another aspect of the present invention includes a planar coordinate input device that detects a contact position of a finger or a pointing device, a process of scrolling the screen display based on the contact position, and continuously for a predetermined time. A screen control unit that performs a process of zooming out the screen display while scrolling based on the contact position when it is detected that a finger or a pointing device is in contact; and the first mode and the second mode And a switching unit for switching between.

  As described above, when a finger or a pointing device is in contact with the planar coordinate input device for a predetermined time continuously, it is considered that the user has an intention to view distant information. By performing the scroll process, the information space can be quickly scrolled according to the user's intention.

  A screen display device according to another aspect of the present invention performs a process of scrolling a screen display based on a joystick that detects a tilted direction and a tilt angle, and a tilt direction and a tilt angle of the joystick, and scrolls in the same direction. And a screen control unit that performs a process of changing the zoom rate based on the set time and the scrolling speed.

  With this configuration, even when scrolling using a joystick, the zoom factor can be automatically changed according to the direction and speed of scrolling. The screen control unit may determine the scroll direction based on the tilt direction of the joystick, and may determine the scroll speed based on the tilt angle of the joystick.

  In the screen display device of the present invention, the joystick has a function of transmitting tactile information to the user, and the joystick transmits to the user a force that resists the movement of the joystick when the tilt angle exceeds the predetermined angle. Also good.

  As described above, when the tilt angle exceeds a predetermined angle, the user can know whether or not the scroll with zoom is started by transmitting the force against the movement of the joystick to the user.

  A screen display device according to another aspect of the present invention performs a process of scrolling a screen display based on a rotational input device that detects a rotational direction and a rotational speed, a rotational direction and a rotational speed of the rotational input device, and And a screen control unit that performs a process of changing the zoom rate based on the time scrolled in the same direction and the speed of the scroll.

  With this configuration, even when scrolling using a rotary input device, the zoom factor can be automatically changed according to the direction and speed of scrolling. Examples of the rotary input device include a trackball, a jog dial, and a rotary knob (an input device such as a volume knob of an audio device).

  In the screen display device of the present invention, the rotary input device has a function of transmitting tactile information to a user, and when the zoom control change process is started by the screen control unit, a force that resists rotation is provided to the user. You may tell.

  Thus, when the zoom ratio changing process is started, the user can know whether or not the scroll with zoom is started by transmitting the force against the rotation to the user.

  According to another aspect of the present invention, there is provided a program for performing screen display based on information on a finger contact position received from a touch panel, wherein the computer receives the information on the touch position from the touch panel; A process of scrolling the screen display based on the contact position and a process of zooming out the screen display while scrolling based on the contact position when it is detected that the finger is in contact for a predetermined time continuously. To perform the steps to be performed.

  By executing this program, zoom-out processing and scroll processing are performed when a finger is in contact with the touch panel for a predetermined time, so that the information space can be quickly scrolled according to the user's intention.

  According to the present invention, the zoom ratio can be automatically changed by performing a scroll operation, and an excellent effect is achieved in that control that prevents the zoom ratio from frequently changing according to a change in scroll speed is possible. Have.

  Hereinafter, a screen display device according to an embodiment of the present invention will be described with reference to the drawings. In the following embodiments, a screen display device that displays a map will be described as an example, but the present invention is not limited to a device that displays a map.

(First embodiment)
FIG. 1 is a diagram illustrating a configuration of a screen display device 1 according to the first embodiment. The screen display device 1 includes an operation information receiving unit 10 that receives operation information from the joystick 20, a screen control unit 12 that controls screen display based on the operation information received by the operation information receiving unit 10, and an operation information reception A RAM 14 that stores operation information received by the unit 10 and a display 16 that displays a screen according to control by the screen control unit 12 are provided.

  FIG. 2 is a view showing the appearance of the joystick 20. The joystick 20 includes a lever 22 that can be tilted in any direction on the base 26. The joystick 20 transmits a signal (operation information) indicating the direction in which the lever 22 is tilted and the tilt angle thereof to the screen display device 1. A plurality of switches 24 are provided above the lever 22 of the joystick 20. A plurality of switches 28 are also provided on the base portion 26 that supports the lever 22. The joystick 20 may transmit a signal indicating that the switches 24, 28 and the like have been pressed to the screen display device 1.

  The screen control unit 12 of the screen display device 1 has a function of controlling screen scrolling and zooming based on the direction in which the joystick 20 received by the operation information receiving unit 10 is tilted and the tilt angle. Specifically, the screen control unit 12 continuously changes the map information read from the map information storage unit 18 and displays it on the display 16 so that the screen display looks like scrolling or zooming.

  Based on the operation information received from the joystick 20, the screen control unit 12 scrolls the screen display in the direction in which the joystick 20 is tilted at a speed corresponding to the tilt angle.

  Further, the screen control unit 12 controls the zoom ratio based on the input operation information and past operation information stored in the RAM 14. Specifically, the screen control unit 12 performs zoom-out processing when it is detected that the joystick 20 is tilted more than the threshold value D1 in the same direction continuously for a predetermined time. At this time, the screen control unit 12 performs zoom-out processing at a constant speed and makes it appear to zoom smoothly. The upper limit of zoom-out is determined in advance, and the zoom-out process is stopped when the upper limit zoom rate is reached.

  The screen control unit 12 performs zoom-in processing when it is detected that the joystick 20 has been tilted at a tilt angle equal to or smaller than the threshold value D2 smaller than the threshold value D1 for a predetermined time in the zoomed-out state. At this time, the screen control unit 12 performs zoom-in processing at a constant speed, and makes it appear to zoom smoothly. The lower limit of zoom-in is determined in advance, and the zoom-in process is stopped when the lower limit zoom rate is reached. In the present embodiment, the lower limit zoom factor is a zoom factor of a screen display (hereinafter referred to as “default”) on which the zoom factor is first displayed. Therefore, the screen control unit 12 does not perform zoom-in processing unless zoomed out from the default state.

  FIG. 3 is a diagram showing the relationship between the movable range of the lever 22 of the joystick 20 and the threshold values D1 and D2 for performing zoom control. The vertical axis and horizontal axis in FIG. 3 indicate the inclination angles of the lever 22 in the vertical direction and the horizontal direction, respectively. The outermost circle shown in FIG. 3 is a range indicating the movable range of the lever 22 of the joystick 20. The zoom-out process is performed when the tilt angle of the joystick 20 is larger than the predetermined threshold D1, and when the lever 22 of the joystick 20 is tilted in the region (3) shown in FIG. The zoom-in process is performed when the tilt angle of the joystick 20 is equal to or smaller than the predetermined threshold D2, and when the lever 22 of the joystick 20 is tilted in the region (1) shown in FIG. When the tilt angle of the joystick 20 is in the region (2), the screen control unit 12 is neutral with respect to the change in the zoom rate, and the screen control unit 12 does not perform the process of changing the zoom rate. As described above, the screen control unit 12 according to the present embodiment performs the zoom-out process when the joystick 20 is greatly tilted in any direction, and performs the zoom-in process when the tilt angle becomes small. The screen can be controlled to suit the sense of

  FIG. 4 is a diagram illustrating the operation of the screen display device 1 according to the present embodiment. The screen display device 1 receives operation information sequentially transmitted from the joystick 20 and performs screen display control based on the operation information. Hereinafter, the operation of the screen display device 1 after receiving the operation information will be described.

  The screen display device 1 of the present embodiment receives operation information indicating the direction in which the lever 22 of the joystick 20 is tilted and the tilt angle thereof from the joystick 20 (S10). The screen display device 1 inputs the operation information received by the operation information receiving unit 10 to the screen control unit 12, and the screen control unit 12 temporarily stores the input operation information in the RAM 14 (S12).

  The screen control unit 12 determines the tilt angle of the joystick 20 based on the input operation information (S14). As a result of the determination of the tilt angle, when the tilt angle of the joystick 20 is equal to or smaller than the threshold D2 (included in the region (1) in FIG. 3), the screen control unit 12 performs the following processing. First, the screen control unit 12 determines whether or not the state where the tilt angle is equal to or less than the threshold value D2 continues for a predetermined time or more (S16).

  As a result of this determination, if it is determined that the state where the tilt angle is equal to or less than the threshold value D2 has not continued for a predetermined time or longer (NO in S16), the screen control unit 12 performs scrolling based on the input operation information. Perform (S26). When it is determined that the state where the tilt angle is equal to or less than the threshold value D2 continues for a predetermined time or longer (YES in S16), the screen control unit 12 has the maximum zoom ratio (default zoom ratio) as the current zoom ratio. It is determined whether or not (S18).

  As a result of this determination, if it is determined that the current zoom rate is the maximum zoom rate (YES in S18), the screen control unit 12 performs scrolling based on the input operation information (S26). When it is determined that the current zoom rate is not the maximum zoom rate (NO in S18), the screen control unit 12 performs a process of scrolling based on the input operation information while zooming in on the screen display ( S20). Thereafter, the screen display device 1 returns to step S10 in which operation information is received from the joystick 20.

  As a result of the determination of the tilt angle of the joystick 20 (S14), if the tilt angle of the joystick 20 is greater than the threshold value D2 and less than or equal to the threshold value D1 (included in the region (2) in FIG. 3), the screen control unit 12 Perform the process. First, the screen control unit 12 determines whether zoom change processing is in progress (S22). That is, the screen control unit 12 determines whether the zoom-in process (S20) or the zoom-out process (S32) is being performed.

  As a result of this determination, if it is determined that the zoom change process is being performed (YES in S22), the screen control unit 12 stops the zoom change process (S24), and scrolls based on the input operation information. Perform (S26). If it is determined that the zoom change process is not being performed (S22) (NO in S22), scrolling is performed based on the input operation information (S26). Thereafter, the screen display device 1 returns to step S10 in which operation information is received from the joystick 20.

  As a result of the determination of the tilt angle of the joystick 20 (S14), when the tilt angle of the joystick 20 is larger than the threshold D1 (included in the region (3) in FIG. 3), the screen control unit 12 performs the following processing. . First, the screen control unit 12 determines whether or not the state where the tilt angle in the same direction is larger than the threshold value D1 continues for a predetermined time or more (S28).

  As a result of this determination, if it is determined that the state where the tilt angle is greater than the threshold value D1 has not continued for a predetermined time or longer (NO in S28), the screen control unit 12 performs scrolling based on the input operation information. Perform (S26). When it is determined that the state in which the tilt angle is greater than the threshold value D1 continues for a predetermined time or longer (YES in S28), the screen control unit 12 determines whether or not the current zoom rate is the minimum zoom rate. (S30).

As a result of this determination, if it is determined that the current zoom rate is the minimum zoom rate (YES in S30), the screen control unit 12 performs scrolling based on the input operation information (S26). When it is determined that the current zoom rate is not the minimum zoom rate (NO in S30), the screen control unit 12 performs a process of scrolling based on the input operation information while zooming out the screen display. (S32). Thereafter, the screen display device 1 returns to step S10 in which operation information is received from the joystick 20.
The configuration and operation of the screen display device 1 according to the first embodiment have been described above.

  The screen display device 1 according to the first embodiment performs zoom-out processing when the joystick 20 is tilted in the same direction continuously beyond the threshold D1 for a predetermined time (S30), and the tilt angle is equal to or less than the threshold D1. Then, the zoom-out process is stopped (S24). As a result, the zoom ratio can be changed to an arbitrary zoom ratio, and scrolling can be performed at the zoom ratio at the time of stopping. As described above, since the zoom rate can be easily changed and scrolled only by the operation of tilting the joystick, a large amount of information can be easily retrieved. The configuration of the present embodiment is particularly convenient when there is a desire to view information in a zoomed-in state or a zoomed-out state like a map.

  In the screen display device 1 according to the first embodiment, zoom-out processing is performed for the first time by an operation (S28) of tilting the joystick 20 in the same direction continuously for a predetermined time. It is considered that such an operation is performed with the intention that the user wants to see distant information. That is, in the present embodiment, when searching for information in the vicinity of information currently being browsed, the zoom rate does not change against the user's intention, and information can be easily searched.

(Second Embodiment)
FIG. 5 is a diagram illustrating a configuration of the screen display device 2 according to the second embodiment. The screen display device 2 of the second embodiment has the same basic configuration as the screen display device 1 of the first embodiment. A touch pad 30 is connected to the screen display device 2 of the second embodiment instead of the joystick 20. In the second embodiment, the screen control unit 12 controls the screen based on operation information transmitted from the touch pad 30. Hereinafter, the control of the screen control unit 12 in the second embodiment will be described.

  First, the touch pad 30 will be described prior to the description of the screen control unit 12. The touch pad 30 is a device for inputting information by tracing the pad with a finger. In the present embodiment, a pressure-sensitive touch pad 30 that senses movement by the pressure of the finger applied to the pad is employed, and the position of the finger is detected and converted into an input value. The touch pad 30 transmits a signal (operation information) indicating the direction and speed of tracing the touch pad 30 to the screen display device 2.

  Next, the screen control unit 12 of the second embodiment will be described. The screen control unit 12 has a function of scrolling the screen display in the direction of tracing the touch pad 30 at a speed corresponding to the traced speed based on the operation information received from the touch pad 30.

  Further, the screen control unit 12 controls the zoom ratio based on the input operation information and past operation information stored in the RAM 14. Specifically, the screen control unit 12 performs zoom-out processing when the touch pad 30 is repeatedly traced in the same direction (hereinafter referred to as “repetitive input”). At this time, the screen control unit 12 performs zoom-out processing at a constant speed and makes it appear to zoom smoothly. The upper limit of zoom-out is determined in advance, and the zoom-out process is stopped when the upper limit zoom rate is reached.

  If repeated input is not detected, the screen control unit 12 performs zoom-in processing. At this time, the screen control unit 12 performs zoom-in processing at a constant speed, and makes it appear to zoom smoothly. Note that the lower limit of zoom-in is determined in advance, and the zoom-in process is stopped when the lower limit zoom rate (default) is reached. Accordingly, in the default state, the screen control unit 12 holds the default zoom rate unless repeated input is detected.

  Here, determination of whether or not to perform zoom-out processing based on repeated input will be described. When there is a repeated input, the screen control unit 12 controls the zoom-out process based on the repetition cycle and the speed of the finger when the finger is released from the touch pad 30. Specifically, a determination value for determining whether or not to perform the zoom-out process based on the repetition cycle and the speed of the finger when the finger is released from the touch pad 30 is obtained. In the present embodiment, this determination value is obtained using a paper airplane model. Hereinafter, this determination value will be described in detail.

  FIG. 6 is a diagram for explaining the principle of obtaining the determination value. The determination value corresponds to “lift” in a paper airplane model. The screen control unit 12 obtains the height when it is rotated by the reciprocal of the repetition period (the number of repetitions per unit time) with respect to the speed when the finger is released as lift. FIG. 6 is a diagram showing the principle, and when actually determining the lift, a constant may be added or multiplied as appropriate. As is apparent from FIG. 6, the determination value increases as the repetition period is shorter, and increases as the speed when the finger is released is higher. On the other hand, when the speed when the finger is released is 0, or when the input is not repeatedly performed, the determination value is 0. The determination value obtained in this way is a value according to the intention of the user to look far away. In the same manner as when the paper airplane flies when the “lift” exceeds “gravity” in the paper airplane model, the screen control unit 12 detects when the determination value (lift) exceeds a predetermined threshold (gravity). The zoom-out process is performed, and the zoom-in process is performed when the determination value is equal to or smaller than a predetermined threshold value. When configuring the screen display device 1, an appropriate value is set as the predetermined threshold.

  FIG. 7 is a diagram for explaining the operation of the screen display device 2 according to the second embodiment. The screen display device 2 receives operation information sequentially transmitted from the touch panel 30 and performs screen display control based on the operation information. Hereinafter, the operation of the screen display device 2 after receiving the operation information will be described.

  The screen display device 2 receives operation information indicating the direction and speed of the touch pad 30 from the touch pad 30 (S40). The screen display device 2 inputs the operation information received by the operation information receiving unit 10 to the screen control unit 12, and the screen control unit 12 temporarily stores the input operation information in the RAM 14 (S42).

  The screen control unit 12 of the screen display device 2 determines whether or not a finger touches the touch pad 30 based on the operation information (S44). When it is not detected that the finger touches the touch pad 30 (NO in S44), the finger is already touching the touch pad. The screen control unit 12 determines whether or not the finger is removed from the touch pad 30 (S46). In this determination, when it is not detected that the finger has been released (NO in S46), the finger is moved with the touch pad 30 still attached. In this case, the screen control unit 12 scrolls in the direction of tracing the touch pad 30 according to the traced speed (S60).

  In the determination of whether or not the finger separation from the touch pad 30 is detected (S46), when the finger separation is detected (YES in S46), the screen control unit 12 calculates the speed when the finger is released. (S48). The speed when the finger is released is the speed of the finger in a minute time when the finger is released. Next, the screen control unit 12 calculates a cycle of tracing the pad based on the operation information stored in the RAM 14 (S50). When the screen control unit 12 detects repeated input based on the operation information stored in the RAM 14, the screen control unit 12 obtains the average value of the required time from the time when the finger is released to the time when the finger is touched as a cycle, and repeatedly If no input is detected, the cycle is “∞” (number of repetitions per unit time = 0).

  The screen control unit 12 obtains a determination value based on the speed when the finger is released and the period of tracing the pad, and performs zoom-out processing when the determination value exceeds a predetermined threshold value, and zoom-in processing when the determination value is equal to or lower than the predetermined threshold value. This is performed (S52). If there is no repeated input, the cycle is “∞”, so the determination value is 0, and the screen control unit 12 performs zoom-in processing. However, when the screen is displayed at the default zoom rate, no further zoom-in processing is performed, so the default zoom rate is maintained. Thereafter, the screen control unit 12 returns to step S40 for receiving operation information from the touchpad 30.

  In the determination of detection of finger touch on the touch pad 30 (S44), when the touch of the finger is detected (YES in S44), the screen control unit 12 performs the following processing. First, the screen control unit 12 determines whether or not the speed when the finger touches the touch pad 30 is 0 (S54). The speed when the finger touches the touch pad 30 is the speed of the finger in a minute time when the finger touches. In this determination (S54), it is determined whether or not the speed is 0. However, even if the speed does not become 0 in a strict sense, the screen control unit 12 determines that the speed is 0. May be. The range in which the speed is determined as 0 is appropriately set according to the sensitivity of the touch pad.

  If it is determined in this determination (S54) that the speed is not 0 when the finger touches (NO in S54), the screen control unit 12 follows the touch pad 30 in the direction traced. Scrolling is performed (S60).

  If it is determined in step S54 whether or not the speed is 0 when the finger touches (YES in step S54), the screen control unit 12 determines whether or not the zoom change process is being performed. Is determined (S56). That is, the screen control unit 12 determines whether or not the zoom change process (S52) is being performed. As a result of this determination, if the zoom change process is in progress (YES in S56), the screen control unit 12 stops the zoom change process (S58), and follows the direction of tracing the touch pad 30 in accordance with the traced speed. Scrolling is performed (S60). In the determination of whether or not the zoom change process is being performed (S56), if it is determined that the zoom change process is not being performed (NO in S56), the screen control unit 12 moves in the direction of tracing the touch pad 30. Scrolling is performed according to the traced speed (S60). Thereafter, the screen control unit 12 returns to step S40 for receiving operation information from the touchpad 30.

  The configuration and operation of the screen display device 2 according to the second embodiment of the present invention have been described above.

  The screen display device 2 according to the present embodiment performs zoom-out processing when the determination value obtained based on the cycle of repeated input and the speed when the finger is released exceeds a predetermined threshold, and traces the touch pad 30. Since zooming out is performed until the touch pad 30 is touched at a speed of 0, it is possible to change to an arbitrary zoom ratio by simply tracing the touch pad.

  In the screen display device 2 of the present embodiment, the determination value is defined such that it increases as the cycle of repeated input decreases, and increases as the finger speed when the finger leaves the touch pad 30 increases. The operation of repeatedly tracing in the same direction is performed with the intention of scrolling greatly in the traced direction. Accordingly, the zoom-out process is performed for the first time when the determination value exceeds a predetermined threshold, and when searching for information in the vicinity of the information currently being browsed, the zoom ratio changes against the user's intention. This makes it easy to search for information.

  In the screen display device 2 of the present embodiment, whether or not to zoom out the screen display based on the speed of the finger when the finger is released from the touch pad 30, that is, the user wants to see distant information. The judgment value of whether or not is obtained. The state of having speed when the finger is released is close to the feeling of “throwing” the screen when viewing the screen displayed on the screen as a piece of paper, and the interface can scroll the screen display according to the user's sense Can provide.

  In the screen display device 2 of the present embodiment, when the finger speed when touching the touch pad 30 is 0 (YES in S54), the zoom change process is stopped. The operation in which the speed of tracing the touch pad 30 is zero is an operation of touching the screen while changing the zoom ratio from above. Therefore, when the screen displayed on the displayed screen is viewed as a piece of paper, the change in the zoom rate can be stopped with a feeling of “pressing” the paper. Further, by scrolling without releasing the finger, it is possible to scroll with the zoom rate stopped, so that an interface suitable for the user's sense can be provided.

  Note that in this embodiment, the touch pad has been described as an example, but the same screen control as in this embodiment can be performed using a touch panel in which a finger detection device and a screen are integrated. is there. In addition, an input device other than the touch panel can be used as long as it is a planar coordinate input device that detects a contact position of a finger or a pointing device.

(Third embodiment)
The screen display device 3 according to the third embodiment of the present invention has the same basic configuration as the screen display device 1 according to the first embodiment (see FIG. 1). The point that I remember is different. The suction point 40 is a point indicating a position that becomes the center of the screen display when the zoom-in process is performed.

  FIG. 8 is a diagram showing the map information stored in the map information storage unit 18. The map information storage unit 18 has information on a plurality of suction points 40 set on a map of Japan.

  The screen display device 3 according to the third embodiment performs zoom-in processing so that the suction point 40 comes to the center of the screen when zooming in on the screen display including the suction point 40. When a plurality of suction points 40 are included in the zoomed-out screen display, zoom-in processing is performed so that the suction point 40 closest to the center of the screen is the center.

  In the third embodiment, since the zoom-in is performed so that the suction point 40 is at the center, it is not necessary to manually adjust the suction point 40 accurately so that the suction point 40 is at the center. Therefore, an easy-to-use interface can be provided. . For example, by setting an urban area, a station, or the like that is highly likely to be referred to as the suction point 40, it is possible to easily obtain a screen display that is zoomed out around the urban area, the station, or the like.

  In the third embodiment, a device having the same basic configuration as that of the screen display device 1 of the first embodiment has been described. However, as in the second embodiment, a touch pad 30 is used. A configuration in which the suction point 40 is set can also be applied to the screen display device 2.

(Fourth embodiment)
FIG. 9 is a diagram showing a car navigation system 50 including the image display device according to the fourth embodiment of the present invention.

  9, a car navigation system 50 includes a position detector 52, a map data input unit 54, an operation switch group 56, a transceiver 58, an external memory 60, a display device 62, a voice controller 64, a speaker 66, a voice recognition device 68, A microphone 70, a remote control sensor 72, a remote control terminal (hereinafter referred to as “remote control”) 74, and a control device 76 to which these devices are connected are provided.

  The control device 76 is configured as a normal computer. The control device 76 includes a CPU, a ROM, a RAM, an I / O, and a bus line (all not shown) for connecting these components. The control device 76 performs predetermined processing (for example, based on various information input from the position detector 52, the map data input unit 54, the operation switch group 56, the transceiver 58, the external memory 60, the voice controller 64, and the remote control sensor 72). Map scale change processing, menu display selection processing, destination setting processing, route search execution processing, route guidance start processing, current position correction processing, display screen change processing, volume adjustment processing, etc.).

The position detector 52 includes a geomagnetic sensor 80, a gyroscope 82, a distance sensor 84, and a GPS (Global Positioning System) receiver 86. The GPS receiver 86 has a function of detecting the current position of the vehicle based on radio waves from the satellite. Since each sensor included in the position detector 52 has an error having a different property, it is configured to be used while being complemented by a plurality of sensors. Further, as the position detector 52, a rotation sensor for steering, a vehicle sensor for each rolling wheel, or the like may be used. Depending on the accuracy of position detection, the position detector 52 may be configured by a part of the sensors described above.

  The map data input unit 54 is loaded with a storage medium (not shown), and inputs various data including map matching data, map data, and landmark data for improving the accuracy of position detection stored in the storage medium. It is a device for doing. As a storage medium, a CD-ROM or DVD-ROM capable of recording a large amount of information is generally used, but a memory card, HDD, or the like may be used.

  The operation switch group 56 includes a touch panel integrated with the display device 62 in addition to a mechanical switch such as a power button. The touch panel detects the contact position of the finger on the display screen and transmits the detected information to the control device 76. Based on the switch operation, the operation switch group 56 provides various functions to the control device 76 (for example, map scale change, menu display selection, destination setting, route search, route guidance start, current position correction, display screen change, volume adjustment). Etc.). In the present embodiment, a touch panel that detects finger contact is described. However, it is obvious that a touch panel that detects a pointing position by a pointing device such as a stylus may be used. Embodiments using are also included in the present invention.

  The remote controller 74 is provided with a plurality of operation switches (not shown). The remote control 74 inputs switch operation information to the control device 76 via the remote control sensor 72. The control device 76 executes various functions according to the switch operation. The operation switch group 56 and the remote controller 74 can cause the control device 76 to execute the same function by any switch operation.

  When the destination is set using the remote controller 74 or the operation switch group 56, the control device 76 searches for the optimum route from the current position detected by the position detector 52 to the destination, and the searched optimum route. Is displayed on the display device 62. As a method for automatically setting the optimum route in this way, a method such as the Dijkstra method is known.

  The display device 62 displays a map, a destination selection screen, and the like, and can perform full color display. The display device 62 can be configured using liquid crystal, organic EL, or the like. The display device 62 displays a map based on the information of the map data input device 54 and displays the optimum route to the destination superimposed on the map. Further, the display device 62 displays a current position mark indicating the current position detected by the position detector 52 so as to be superimposed on the map. The display device 62 can additionally display other information such as the current time and traffic jam information in addition to the current position and route.

  The external memory 60 is a writable mass storage device such as an HDD. The external memory 60 stores a large amount of data, data that should not be erased even when the power is turned off, and copies frequently used data from the map data input device 54 for storage. is there. The external memory 60 may be a removable memory having a relatively small storage capacity.

  The transceiver 58 has a function of receiving traffic information, weather information, facility information, advertisement information, and the like provided from the outside (for example, an infrastructure such as a VICS (registered trademark) system), vehicle information, user information, and the like to the outside. It has a function to transmit. The transceiver 58 transmits information received from the outside to the control device 76, and the control device 76 processes the information. Further, the transceiver 58 can output information processed by the control device 76 from the transceiver 58 as necessary.

  The speaker 66 notifies the outside of a predetermined sound (guidance for guidance, explanation of screen operation, sound recognition result, etc.) based on the sound output signal input from the sound controller 64.

  The microphone 70 inputs the voice uttered by the user to the voice recognition device 68 as an electrical signal.

  The voice recognition device 68 collates the user's input voice uttered through the microphone 70 with vocabulary data (comparison target pattern) in a recognition dictionary (not shown) stored therein, and obtains the one with the highest degree of matching. The recognition result is input to the voice controller 64.

  The voice controller 64 controls the voice recognition device 68 and, when there is a voice input from the user, performs a talkback output control (voice output) through the speaker 66. Further, a process of inputting the recognition result of the voice recognition device 68 to the control device 76 is also performed. Based on information from the voice recognition device 68, the control device 76 performs predetermined processing (for example, map scale change processing, menu display selection processing, destination setting processing, route search execution processing, route guidance start processing, Current position correction processing, display screen change processing, volume adjustment processing, etc.). Further, the route guidance voice information and the like processed by the control device 76 are appropriately notified from the speaker 66 via the voice controller 64.

  Next, a scroll process of the screen displayed on the display device 62 will be described. FIG. 10 is a diagram illustrating a screen example of the display device 62 with a touch panel. As shown in FIG. 10, the screen displayed on the display device 62 normally displays an area C including the center (hereinafter referred to as “center area”) C, and a peripheral area (hereinafter referred to as “center area”). E (referred to as “peripheral region”) is displayed translucently. Thereby, the user can distinguish the center area | region C and the peripheral area | region E easily.

  In the present embodiment, when the semi-transparent peripheral edge area E is touched, the control unit 76 performs scroll with zoom, and when the normally displayed central area C is touched, The control unit 76 performs scrolling without zooming. Hereinafter, the process of performing scrolling with zoom is referred to as “first mode”, and the process of scrolling without zooming is referred to as “second mode”.

  FIG. 11 is a flowchart showing the scroll method according to the present embodiment. When the touch panel detects a finger touch (contact) (S70), the control unit 76 determines whether or not the touched position is the peripheral area E of the screen (S72). If the touched location is the peripheral area E (YES in S72), the control unit 76 performs screen control in the first mode.

  In the first mode, the control unit 76 determines whether or not a predetermined time has passed for a time during which the touch panel is touched (S90). When the touch time has not passed the predetermined time (NO in S90), the display device 62 performs a scroll process according to the touched position. For example, a vector from the center of the screen to the touched position is obtained and scrolled in the vector direction. At this time, the scrolling speed may be determined according to the distance from the center of the screen to the touched position. The control unit 76 determines whether or not the finger is removed from the touch panel while performing the scroll process (S94). If it is determined that the finger has been released (YES in S94), the screen control is terminated. That is, the control unit 76 stops the scroll process and displays a map of the stopped position.

  If it is determined that the finger has not been removed (NO in S94), the process returns to step S90, and the control unit 76 determines whether or not a predetermined time has elapsed (S90). By this control, scrolling without zooming is performed until the touched time has passed a predetermined time, and when the finger is released (YES in S94), processing for stopping screen control is performed.

  When the predetermined time has elapsed (YES in S90), the control unit 76 performs scroll processing and zoom-out processing according to the touched position (S96). Here, the scroll speed may be constant regardless of the zoom rate, or may be decreased as the zoom rate decreases. When the zoom ratio decreases, a wide area is displayed on the screen. By slowing down the scroll speed, the scroll position can be finely adjusted in a map displaying a wide range.

  The control unit 76 performs zoom-out processing and scroll processing, and determines whether or not the finger has been removed from the touch panel (S98). If it is determined that the finger is not separated (NO in S98), the zoom-out process and the scroll process are continued. Note that the zoom-out process stops when the predetermined minimum zoom ratio is reached, and then scrolls on the screen with the minimum zoom ratio.

  If it is determined that the finger has been released (YES in S98), the control unit 76 calculates the area displayed when zooming in to the maximum zoom ratio and displays it on the screen with the current zoom ratio ( S100).

  FIG. 12 is a diagram illustrating an example in which an area displayed when zooming in is displayed on the screen of the current zoom ratio. As shown in FIG. 12, the region T that is displayed when zoomed in is shown, so that it is possible to grasp where the area when zoomed in is located in the wide area map. In the present embodiment, an example in which the region T displayed when zoomed in is described has been described. However, the region T displayed when zoomed in may not be displayed, and the configuration may be such that the region T is simply zoomed in. Is possible.

  Subsequently, the control unit 76 performs a zoom-in process (S102), and returns to the maximum zoom rate. Note that, in step S102 in FIG. 11, an example is described in which only the zoom-in process is performed after the finger is released. May be performed. In this case, the calculation of the area displayed when zooming in in step S100 is performed in consideration of the shift of the display area due to scrolling. The above processing is the screen control in the first mode.

In the determination of whether or not the touched position is the peripheral area E of the screen (S72), when it is determined that the touched location is not the peripheral area E (NO in S72), the control unit 76 performs the touch. A scroll process is performed in accordance with the set position (S104). The control unit 76 determines whether or not the finger is removed from the touch panel while performing the scroll process (S106). If it is determined that the finger is not released (NO in S106), the scroll process is continued. If it is determined that the finger is released (YES in S106), the screen control is terminated. That is, the control unit 76 stops the scroll process and displays a map at the stopped position.
The navigation system 50 including the screen display device according to the fourth embodiment of the present invention has been described above.

  In the screen display device of the present embodiment, scrolling without zooming is performed when the center area C of the touch panel is touched, and scrolling with zooming is performed by touching the peripheral area E of the touch panel. When the user touches the peripheral area E, it is considered that the user has an intention to see the area adjacent to the displayed area or a further area. In the present embodiment, by performing zoom-out processing when the peripheral area E is touched, the information space can be quickly scrolled according to the user's intention.

  Further, in the screen display device according to the present embodiment, the zoom-out process is performed after a predetermined time has elapsed after touching the peripheral area E. Therefore, when the peripheral area E is touched by mistake, the zoom-out is not performed. By scrolling without zooming until a predetermined time elapses, it is estimated that the peripheral area E is pushed by the user's intention, so that zoom-out processing can be performed in an appropriate situation. Also, the user is not surprised by the start of the zoom-out process.

  In the screen display device according to the present embodiment, the display device 62 displays the peripheral region E in a translucent manner and the central region as a normal display, so that the user can grasp where the peripheral region E is on the screen. it can. In this embodiment, in order to distinguish the peripheral area E from the central area C, the peripheral area E is not displayed semi-transparently, but a line is drawn at the boundary between the peripheral area E and the central area C. May be displayed. Moreover, it is good also as an aspect which does not distinguish the peripheral area | region E and the center area | region C on screen display.

(Fifth embodiment)
Next, a navigation system including the screen display device according to the fifth embodiment of the present invention will be described. The navigation system of the fifth embodiment has the same basic configuration as the navigation system 50 of the fourth embodiment (see FIG. 10), but a method for switching between the first mode and the second mode. Is different.

  FIG. 13 is a flowchart illustrating a scroll method according to the fifth embodiment. When the touch panel detects a touch on the screen (S70), it determines whether or not two or more places are touched simultaneously (S74). When it is determined that two or more places are touched simultaneously (YES in S74), the control unit 76 performs screen control (scroll with zoom) in the first mode, and when it is determined that two or more places are not touched simultaneously. (NO in S74), the control unit 76 performs screen control (scroll without zoom) in the second mode. The screen control in the first mode and the second mode is the same as in the fourth embodiment.

  The screen display device according to the fifth embodiment can switch whether or not to perform scrolling with zooming according to the number of fingers touching the touch panel. Therefore, the user can switch the mode only by operating the touch panel. .

  As a modification of the present embodiment, during the zoom-out process in the first mode, when it is detected that one finger has left the touch panel, the zoom-out is stopped, Only scrolling may be performed at the stopped zoom rate.

(Sixth embodiment)
Next, a navigation system including the screen display device according to the sixth embodiment of the present invention will be described. The navigation system of the sixth embodiment has the same basic configuration as the navigation system 50 of the fourth embodiment (see FIG. 10), but in the sixth embodiment, the touch panel is a finger It has a function to detect the pressure when touched. The sixth embodiment is different from the fourth embodiment in the method of switching between the first mode and the second mode.

  FIG. 14 is a flowchart illustrating a scroll method according to the sixth embodiment. When the touch panel detects a touch on the screen (S70), it determines whether or not the pressing force of the touch is greater than a predetermined threshold (S76). When it is determined that the pressing force is equal to or less than the predetermined threshold (NO in S76), the control unit 76 performs screen control in the second mode. If it is determined that the pressing force is greater than the predetermined threshold (YES in S76), the control unit 76 performs screen control in the first mode. In the present embodiment, before performing the screen control in the first mode, the user is notified that the mode is the first mode (S78). As a notification method, for example, a voice message “This is a scroll with zoom” may be output, or an electronic sound may be emitted. Thereby, the user can know whether or not scrolling is performed in a desired mode. In this embodiment, an example is given in which when the first mode is entered, the user is notified that the mode is the first mode, but the second mode is entered when the second mode is entered. It is good also as a structure which alert | reports the mode, when it enters into any of the 1st mode and the 2nd mode. The following screen control in the first mode and screen control in the second mode are the same as those in the fourth embodiment.

  Since the screen display device according to the sixth embodiment can switch whether or not to perform scrolling with zoom by the pressing force when touching the touch panel, the user can switch the mode only by operating the touch panel. Can be done.

  In the present embodiment, an example has been described in which when the finger is detected to be separated (YES in S94, S98, and S106), the screen control is once ended and each mode is ended. When the pressing force changes with the touch panel still touching the touch panel, the first mode and the second mode may be switched.

(Seventh embodiment)
Next, a navigation system provided with a screen display device according to a seventh embodiment of the present invention will be described. The navigation system of the seventh embodiment has the same basic configuration as the navigation system 50 of the fourth embodiment (see FIG. 10), but the screen control is performed between the first mode and the second mode. The method of switching is different.

  FIG. 15 is a flowchart illustrating a scroll method according to the seventh embodiment. When the touch panel detects a touch on the screen (S70), it traces the movement of the touched finger and determines whether the finger movement is longer than a predetermined threshold (S82). If the finger movement is longer than the predetermined threshold (YES in S82), the control unit 76 performs screen control in the first mode. When screen control is performed in the first mode, the user is notified that the mode is the first mode, as in the sixth embodiment (S84). When the finger movement is equal to or smaller than the predetermined threshold (NO in S82), the control unit 76 performs screen control in the second mode. The following screen control in the first mode and screen control in the second mode are the same as those in the fourth embodiment.

  Since the screen display device according to the seventh embodiment can switch whether or not to perform scrolling with zoom by the movement of the finger, the user can switch the mode only by operating the touch panel.

(Eighth embodiment)
Next, a navigation system provided with a screen display device according to an eighth embodiment of the present invention will be described. The navigation system according to the eighth embodiment has the same basic configuration as the navigation system 50 according to the fourth embodiment (see FIG. 10), but mode switching for switching modes in the operation switch group 56 is performed. Has a switch. A switch for switching the mode is provided on the handle, for example.

  FIG. 16 is a flowchart illustrating a scroll method according to the eighth embodiment. When the touch panel detects a touch on the screen (S70), the touch panel determines whether the mode switch is set to the first mode or the second mode (S86). The control unit 76 performs screen control in the first mode or the second mode according to the setting of the mode switch. The screen control in the first mode and the second mode is the same as in the fourth embodiment.

  The screen display device according to the eighth embodiment can switch whether or not to perform scrolling with zoom using a mode switch, so that the user can switch modes reliably and easily.

(Ninth embodiment)
FIG. 17 is a diagram illustrating a configuration of a screen display device 90 according to the ninth embodiment of this invention. The basic configuration of the screen display device 90 of the ninth embodiment is the same as that of the screen display device 1 of the first embodiment, but the screen display device of the ninth embodiment is the same as that of the joystick 20. A drag generation unit 92 that generates a force against movement is provided.

  Similarly to the first embodiment, the screen display device 90 according to the ninth embodiment performs scrolling without zooming when the tilt angle of the joystick 20 is equal to or smaller than the first threshold value D1, and the first threshold value. When it is larger than D1, scroll with zoom is performed. Further, when the angle of the joystick 20 becomes equal to or smaller than the second threshold value D2 during scrolling with zoom, zoom-in processing is performed.

  In the screen display device 90 of the ninth embodiment, when the joystick 20 tries to incline more than the first threshold D1, the drag generator 92 is a force in a direction that suppresses the inclination angle to be equal to or less than the first threshold D1. Is given to the joystick 20. Further, when the drag generating unit 92 tries to make the tilt of the joystick 20 smaller than the second threshold D2 during scrolling with zoom, the drag generating unit 92 gives the joystick 20 a force in a direction that makes the tilt angle equal to or greater than the second threshold D2. .

  In the screen display device 90 according to the ninth embodiment, when the inclination of the joystick 20 is changed beyond the first threshold value D1 or the second threshold value D2, the joystick 20 is given a force against the change. , Notify the user. Thereby, when the user moves the joystick 20 against the resistance force, it can be sensed by touch that the zoom-out process or the zoom-in process starts.

  The screen display device of the present invention has been described in detail with reference to the embodiment, but the present invention is not limited to the above-described embodiment.

  In the screen display devices 1 and 2 according to the above-described embodiments, a zoom stop button for stopping the zoom change process may be provided. By pressing the zoom stop button after changing to an arbitrary zoom rate, the zoom rate can be fixed and scrolled. As a result, the zoom ratio is not automatically changed no matter what operation is performed, so that the user can perform the scroll operation with peace of mind.

  In the screen display devices 1 and 2 of the above-described embodiment, the screen control unit 12 has been described with respect to the example in which the zoom is changed at a constant speed. However, the speed at which the zoom is changed need not be constant. For example, in the screen display device 1 according to the first embodiment, the zoom speed may be determined according to the tilt angle of the joystick 20. In the screen display device 2 according to the second embodiment, the zoom speed may be determined according to the magnitude of the determination value obtained based on repeated input. However, in either case, control is performed so that the zoom speed does not fluctuate significantly. As described above, by changing the zoom speed according to the input value from the input device such as the joystick 20 or the touch pad 30, it is possible to perform the zoom speed control according to the intention of the user.

  In the screen display device 2 according to the second embodiment, the example in which the zoom change process is stopped when the speed of the finger touching the touch pad 30 is 0 has been described. As in the first embodiment, Two threshold values for determining the determination value may be set, and zoom-out processing may be performed when the determination value exceeds the first threshold value, and zoom-in processing may be performed when the determination value is equal to or less than the second threshold value. Accordingly, when the determination value is equal to or less than the first threshold and exceeds the second threshold, the zoom change process is stopped.

  In the screen display device 2 according to the second embodiment, the screen display device 2 receives a signal indicating a pressure when the touch pad 30 is touched, and performs zoom using the pressure when the touch pad 30 is touched. You may perform control to change. For example, a configuration may be adopted in which zooming out is performed when the button is pressed strongly.

  The screen display device 1 according to the above-described embodiment may be provided with a function of changing the angle of the map information displayed on the screen, and the zoom-out and zoom-in processes described above may be performed with the angle changed. For example, when the joystick 20 is tilted at a tilt angle larger than a predetermined threshold in a screen display viewed from an obliquely downward direction, zooming out is performed while smoothly transitioning to a screen display viewed from directly above. You may go.

  In the above-described embodiment, a joystick, a touch pad, and a touch panel have been described as examples of input devices. However, the present invention can be applied to devices other than the input devices described in the embodiments. For example, the screen display device of the present invention can be controlled based on operation information transmitted from a pointing device such as a mouse, a jog dial, a trackball, or a rotary knob. The jog dial is an input device that operates by rotating and pushing the dial. In the case of the jog dial, the screen can be scrolled according to the rotation of the jog dial, and whether to perform scrolling with zooming can be switched depending on whether the jog dial is pressed.

  In the fourth to eighth embodiments described above, the touch panel has been described as an example. However, a touch pad can be used instead of the touch panel. In addition, an input device other than the touch panel can be used as long as it is a planar coordinate input device that detects a contact position of a finger or a pointing device.

  In the ninth embodiment described above, the example in which the drag is applied to the joystick 20 at the tilt angle of the joystick 20 to which the zoom is changed has been described. However, the condition for applying the drag is limited to the case where the zoom is changed. I can't.

  In the ninth embodiment described above, the example in which the drag is given to the user from the joystick 20 has been described, but the device for giving the drag is not limited to the joystick. For example, a rotary input device such as a trackball, a jog dial, or a rotary knob can also be configured to apply a force against rotation when changing the zoom rate.

  For example, drag may be applied when scrolling the screen display across the boundaries of prefectures and municipalities. As a result, the user can easily know that the screen display has crossed the borders of prefectures and municipalities. In addition, when a route to the destination is set, the screen display device may give a resistance force when operation information for scrolling in a direction away from the screen is input. As a result, the user is guided by the effectiveness of the joystick 20, so that the screen display can be scrolled along the route. Even when a route is not set, the screen display device may provide a drag when operation information that scrolls in the direction of the sea is input. In a navigation system, scrolling normally does not occur toward the sea, so if the user tries to scroll in the direction of the sea, it is considered that the operation is erroneous. By giving a drag force to the joystick 20, it can be notified to the user that the operation is incorrect.

  In the above embodiment, an example of performing scroll with zoom when scrolling the screen display according to the operation of the input device has been described. However, for example, the scroll with zoom can be performed by using a map near the searched destination. It can also be applied to display. For example, when a destination is searched for by name search or telephone number, a scroll with zoom is performed from the currently displayed area to the vicinity of the destination, instead of switching to a map near the destination. Thereby, the positional relationship between the current position and the destination can be grasped. At this time, scrolling with zoom may be performed along the route from the current location to the destination. Thereby, the user can understand the outline of the route.

  In the above-described embodiment, the screen display device and the operation thereof have been described. However, the present invention includes a program that causes a computer to execute processing by the above-described screen display device.

  According to the present invention, the zoom ratio can be changed to an arbitrary zoom ratio, and it has an excellent effect that it is possible to scroll at the zoom ratio at the time when the zoom process is stopped. It can be used for various devices. That is, the present invention can be used for screen display in, for example, navigation devices, portable terminals, personal computers, games and other amusement devices, medical image browsing devices, videos, home appliances including televisions, and the like.

It is a figure which shows the structure of the screen display apparatus of 1st Embodiment. It is a figure which shows the external appearance of a joystick. It is a figure which shows the relationship between the movable range of the lever of a joystick, and the threshold value for performing zoom control. It is a figure which shows operation | movement of the screen display apparatus of 1st Embodiment. It is a figure which shows the structure of the screen display apparatus of 2nd Embodiment. It is a figure for demonstrating the principle which calculates | requires judgment value (lifting force). It is a figure which shows operation | movement of the screen display apparatus of 2nd Embodiment. It is a figure which shows the map information memorize | stored in the map information storage part of 3rd Embodiment. It is a figure which shows the car navigation system provided with the image display apparatus of 4th Embodiment. It is a figure which shows the example of a screen of a display apparatus with a touch panel. It is a flowchart which shows the scroll method of 4th Embodiment. It is a figure which shows the example which displayed the area | region displayed when zooming in on the screen of the present zoom rate. It is a flowchart which shows the scroll method of 5th Embodiment. It is a flowchart which shows the scroll method of 6th Embodiment. It is a flowchart which shows the scroll method of 7th Embodiment. It is a flowchart which shows the scroll method of 8th Embodiment. It is a figure which shows the structure of the screen display apparatus of 9th Embodiment.

1, 2 Screen display device 10 Operation information receiving unit 12 Screen control unit 14 RAM
16 Display 18 Map information storage unit 20 Joystick 22 Lever 24 Switch 26 Base unit 28 Switch 30 Touch pad 40 Adsorption point 50 Navigation system 52 Position detector 54 Map data input unit 56 Operation switch group 58 Transceiver 60 External memory 62 Display device 64 Voice controller 66 Speaker 68 Voice recognition device 70 Microphone 72 Remote control sensor 74 Remote control 76 Control device 78 VICS (registered trademark) sensor 80 Geomagnetic sensor 82 Gyroscope 84 Distance sensor 86 GPS receiver 90 Screen display device 92 Drag generator

Claims (34)

An operation information receiving unit for receiving operation information indicating the scroll direction and the speed thereof from the input device;
Screen control for performing processing for scrolling the screen display based on the operation information received by the operation information receiving unit, and for performing processing for changing the zoom ratio based on the time scrolled in the same direction and the speed of the scrolling And
A screen display device comprising:   The screen control unit performs a process of zooming out the screen display when detecting that the scroll speed is greater than a predetermined threshold continuously for a predetermined time, and the zoom-out process is configured such that the scroll speed is equal to or less than the threshold. The screen display device according to claim 1, wherein the screen display device is continued until it is detected that the zoom ratio has been reached or until a predetermined minimum zoom ratio is achieved.   The screen control unit zooms in the screen display when it is detected that the scrolling speed is equal to or lower than a second threshold value smaller than the predetermined threshold value for a predetermined time continuously in a state where the screen display is zoomed out. 3. The screen display device according to claim 2, wherein the zoom-in process is continued until the scroll speed becomes greater than the second threshold or reaches a predetermined maximum zoom ratio.   The screen display device according to claim 3, wherein the screen control unit controls a zoom-in or zoom-out speed according to the scroll speed.   2. The operation information receiving unit receives a signal indicating a tilt direction of a joystick as operation information indicating the scroll direction, and receives a signal indicating a tilt angle of the joystick as operation information indicating the scroll speed. The screen display apparatus of any one of -4.   The screen control unit obtains a determination value for determining whether or not to perform zoom change processing based on the time scrolled in the same direction and the scroll speed, and when the determination value is larger than a predetermined threshold value A process of zooming out the screen display, performing a process of zooming in the screen when the determination value is a predetermined threshold value or less, and performing the zoom-out process and the zoom-in process within a predetermined zoom rate range. Item 4. The screen display device according to Item 1.   The screen control unit obtains a determination value for determining whether or not to perform zoom change processing based on a cycle when scrolling repeatedly in the same direction and a speed of the scroll, and the determination value is greater than a predetermined threshold value. A process of zooming out the screen display is performed when it is large, and a process of zooming in the screen is performed when the determination value is equal to or smaller than a predetermined threshold value. The screen display device according to claim 1, wherein A planar coordinate input device that detects the contact position of a finger or a pointing device,
The operation information receiving unit receives a signal indicating the direction of tracing the planar coordinate input device as operation information indicating the direction of the scroll, and traces the planar coordinate input device as operation information indicating the speed of the scroll. Receive a signal indicating the speed
8. The screen control unit obtains the determination value based on a period when the planar coordinate input device is repeatedly traced and a speed when a finger or a pointing device leaves the planar coordinate input device. The screen display device described in 1.   The screen display device according to claim 8, wherein the planar coordinate input device is a touch pad or a touch panel.   When the screen control unit detects that the speed of tracing the planar coordinate input device when a finger or a pointing device touches the planar coordinate input device is zero during zoom-in or zoom-out processing, The screen display device according to claim 8, wherein zoom-in or zoom-out processing is stopped until a finger or a pointing device leaves the planar coordinate input device.   The screen display device according to claim 6, wherein the screen control unit controls a zoom-in or zoom-out speed according to the determination value. A point indicating a predetermined position in the image is set in the image to be displayed,
The screen control unit adjusts the position of an image so that the point is at the center of the screen when zooming out a screen display including the point in a zoomed-out state. The screen display apparatus in any one of. An operation information receiving step for receiving operation information indicating the direction of scrolling and its speed from the input device;
Screen control for performing processing for scrolling the screen display based on the operation information received in the operation information receiving step, and for performing processing for changing the zoom ratio based on the time scrolled in the same direction and the speed of the scrolling Steps,
A screen display method comprising: A program for displaying a screen based on operation information received from an input device.
An operation information receiving step for receiving operation information indicating the direction of scrolling and its speed from the input device;
Screen control for performing processing for scrolling the screen display based on the operation information received in the operation information receiving step, and for performing processing for changing the zoom ratio based on the time scrolled in the same direction and the speed of the scrolling Steps,
A program that executes A touch panel for detecting the contact position of the finger in the screen;
A process of scrolling the screen display based on the contact position and a process of zooming out the screen display while scrolling based on the contact position when it is detected that the finger is in contact for a predetermined time continuously A screen control unit for performing
A screen display device comprising: A touch panel for detecting a finger contact position in the screen;
A process of scrolling the screen display based on the contact position and a process of zooming out the screen display while scrolling based on the contact position when it is detected that the finger is in contact for a predetermined time continuously A screen control unit having a first mode for performing a scrolling operation and a second mode for performing only a scrolling process regardless of the time the finger is in contact;
A switching unit that switches between the first mode and the second mode;
A screen display device comprising:   The screen display device according to claim 16, wherein the switching unit is a switch that selects one of the first mode and the second mode.   The screen display device according to claim 16, wherein the switching unit switches between the first mode and the second mode according to whether or not the contact position is included in a predetermined region of the touch panel.   The switching unit sets the second mode when the contact position is a predetermined area including the center of the screen, and sets the first mode when the contact position is a peripheral area of the screen other than the predetermined area. The screen display device according to claim 16.   The screen display device according to claim 16, wherein the switching unit switches between the first mode and the second mode according to whether or not two or more fingers are in contact with the touch panel. The touch panel detects a pressing force with which a finger presses the touch panel,
The screen display device according to claim 16, wherein the switching unit switches between the first mode and the second mode according to the pressing force.   The screen according to claim 16, wherein the switching unit switches between the first mode and the second mode according to whether or not the finger has moved a predetermined threshold or more while the finger is in contact with the touch panel. Display device.   The screen display device according to any one of claims 16 to 22, wherein the screen control unit continues the zoom-out process until a predetermined minimum zoom rate is achieved in the first mode.   The screen display device according to any one of claims 16 to 23, wherein the screen control unit changes a scrolling speed according to a zoom rate.   The screen control unit performs a process of zooming in the screen display until reaching a predetermined maximum zoom rate when detecting that the finger is removed from the touch panel in a state where the screen display is zoomed out. The screen display apparatus in any one of 16-24.   26. The screen display device according to claim 25, wherein the screen control unit performs a process of scrolling based on the contact position detected last before a finger is released from the touch panel when performing the zoom-in process.   An area displayed on a screen when a maximum zoom ratio is detected when detecting that a finger is released from the touch panel is predicted, and the predicted area is displayed on a zoomed-out screen. 27. A screen display device according to 25 or 26.   The screen display device according to any one of claims 16 to 27, further comprising a notification unit that notifies a user of switching between the first mode and the second mode. A planar coordinate input device for detecting a contact position of a finger or a pointing device;
The screen display is scrolled based on the contact position, and the screen display is zoomed while scrolling based on the contact position when it is detected that the finger or the pointing device is in contact for a predetermined time. A screen control unit that performs processing to be out,
A switching unit that switches between the first mode and the second mode;
A screen display device comprising: A joystick that detects the tilted direction and tilt angle;
A screen control unit that performs processing for scrolling the screen display based on the tilt direction and tilt angle of the joystick, and that performs processing for changing the zoom ratio based on the time scrolled in the same direction and the speed of the scroll,
A screen display device comprising: The joystick has a function of transmitting tactile information to a user,
31. The screen display device according to claim 30, wherein the joystick transmits a force that resists movement of the joystick to a user when an inclination angle exceeds the predetermined angle. A rotary input device that detects the direction and speed of rotation;
Screen control for performing processing for scrolling the screen display based on the rotation direction and rotation speed of the rotary input device, and for performing processing for changing the zoom ratio based on the time scrolled in the same direction and the scroll speed. And
A screen display device comprising: The rotary input device has a function of transmitting tactile information to a user;
33. The screen display device according to claim 32, wherein when the zoom control process is started by the screen control unit, a force against rotation is transmitted to the user. A program for displaying a screen based on information of a finger contact position received from a touch panel,
Receiving contact position information from the touch panel;
A process of scrolling the screen display based on the contact position and a process of zooming out the screen display while scrolling based on the contact position when it is detected that the finger is in contact for a predetermined time continuously The steps of
A program that executes

Images