JP2007232772A - Data display device, data display program, and computer-readable recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To impose troublesome operation of a data display device on a user and to securely perform display control that the user intends. <P>SOLUTION: In the data display device, the direction of acceleration is extracted a certain time after the data display device is applied with the acceleration and becomes stationary, and the pattern of the acceleration is extracted, based on the direction. For example, a user who desires to display a detailed image applies acceleration to the data display device, in the direction indicated by arrow 1705. In this case, the user without being conscious moves the data display device in a display surface direction, and then immediately applies acceleration to the data display device in the direction indicated by arrow 1706 so as to make the data display device stationary. In the data display device, only the acceleration which is a fixed time interval after the data display device becomes stationary, after it received the acceleration is extracted. Namely, acceleration in the direction opposite from that of the display surface is extracted, as intended by the user. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a data display device, and more particularly, to a data display device that executes display control based on movement of the device, a data display program, and a computer-readable recording medium.

  In recent years, with the spread of mobile terminals such as mobile phones, there is an increasing need to browse documents created in offices and homes in a mobile environment.

  However, in such a portable terminal, the size of the display screen is limited. For this reason, when a document is viewed on a mobile terminal, at least one of the overall image and details of the document is sacrificed.

  One of the most straightforward solutions to this is to provide the terminal with a large display similar to a PC (Personal Computer) that can display the entire image of the document. Becomes impossible. That is, it is impossible to provide a large display on the mobile terminal. In fact, looking back on the development of mobile terminals such as mobile phones so far, the resolution of displays has increased, but the absolute display area has not changed much. For this reason, the situation where it is difficult to display the entire image of the document on the mobile terminal has not been improved.

  It should be noted that this is not a problem when browsing text files that originally have no layout information. This is because text files often need to be folded at an appropriate place.

  However, when the layout is important information, either a whole image is displayed or a detailed image is displayed for each part. It should be noted that it is difficult to read the details when the entire image is displayed on a small screen of the portable information device. On the contrary, when displaying the details, there is no problem in reading the information of the detailed part, but it is not known which part of the whole is the part currently read by the user. That is, in any case, the user is stressed. This will be described with reference to FIG.

  FIG. 36 is a diagram for explaining a display mode when the page data 601 is displayed on a screen having a smaller size than the page data 601. In FIG. 36, the whole image 602 shows a state in which the paper page data 601 is reduced and displayed, and the detailed image 603 shows a state in which only a part of the paper page data 601 (detail display target area 604) is displayed. .

  Referring to FIG. 36, in the overall image 602, the overall layout can be grasped, but the detailed contents cannot be grasped. On the other hand, in the detailed image 603, the content of the detailed display target area 604 can be grasped, but the information of the entire layout cannot be grasped.

  Therefore, it is conceivable that the mobile terminal is configured such that the whole image is displayed when zoomed out by some operation, and the detail is displayed when zoomed in by some operation. However, with such a configuration, there arises a problem that the user is forced to perform frequent key operations in order to grasp both the overall image and the details. Further, there arises a problem that the user is forced to bear such a key operation. This is because such a key operation is merely a specific key assigned to a specific operation, and the correspondence between the key and the operation is merely an arrangement within the apparatus.

  Patent Document 1 discloses a technique for controlling display using the tilted state of a terminal and acceleration applied to the terminal in order to enhance the operability of screen scrolling in the data display device.

In this document, the acceleration sensor detects the acceleration in the data vertical direction, the horizontal direction, and the panel vertical direction in the data display device, and the obtained acceleration is integrated twice, thereby moving the data display device. Is converted to And the technique of controlling a display magnification by the obtained movement amount is disclosed. Further, this document also mentions a technique for setting the display magnification based on the acceleration itself.
JP 2002-268622 A

  However, display control as intended by the user is not always performed simply by taking out the tilt and acceleration and using them for control.

  In other words, the technique described in Patent Document 1 controls the display content based on the movement amount of the terminal, and thus the screen display is controlled by an operation closer to the user's intuition. Such issues are not considered to be solved.

  First, the amount of movement of the terminal is that the range in which the user can move the terminal is affected by the length of the user's arm and the surrounding situation, and therefore may not necessarily match the user's intuition. In other words, for example, in a crowded train, the range that can be operated without causing obstacles to people around you is extremely narrow, and even if the same user wants the same control compared to other cases, The amount of movement is considered to change.

  An essential problem is that display control unintended by the user is executed due to movement of the terminal unintended by the user. For example, even if the user moves the terminal for display control, the user often moves the terminal backward to return to the original position (not for display control). This is because display control is also executed by movement of the terminal. In other words, even if the user moves the terminal for display control, if the terminal is moved to restore the terminal position, display control that cancels the effect of the display control originally intended by the user is executed. It is thought that it is done.

  From this, it is considered that the display control of the terminal needs to use the acceleration itself rather than the movement amount.

  However, even if display control is simply performed according to acceleration, it cannot be said that display control unintended by the user can be reliably avoided. When the user gives acceleration by moving the terminal, the user thinks that the terminal is moved so as to continuously apply the acceleration in the reverse direction in order to return to the original position in order to stop the terminal once and see the effect. Because it is.

  FIG. 37 shows an example of acceleration applied to the terminal as the user moves the terminal. In FIG. 37, the value of the acceleration a is a positive (+) value when an acceleration is applied upward in the vertical direction, and is a negative (−) value when an acceleration is applied downward in the vertical direction. It is described to become. Also, FIG. 37 shows a change in acceleration with time when the user intends to move the terminal upward in the vertical direction to execute desired display control.

  Referring to FIG. 37, the acceleration value is positive until time T. This is considered to correspond to the user moving the terminal upward in order to execute the intended display control. However, after time T, the acceleration value is negative. This is considered to correspond to the fact that the user moved the terminal upward for display control and then moved downward to return the terminal to an easy-to-operate position.

  In such a case, the display control intended by the user is executed until time T. However, after time T, the display control intended by the user is not executed because the acceleration is a negative value. Or, depending on the configuration of the terminal, there is a case where display control is executed so as to cancel the display control intended by the user.

  As described above, in the conventional portable terminal, it is desired that the display control is executed based on an easy operation. On the other hand, the display is simply performed using the movement amount of the terminal or the magnitude of the applied acceleration. When control is performed, the control operation intended by the user is not executed, or even if it is executed, a control operation that cancels the control operation is executed and is not executed as a result. There are cases.

  The present invention has been conceived in view of such a situation, and an object of the present invention is to allow a data display device to reliably execute display control intended by the user without imposing complicated operations on the user. It is to be.

  A data display device according to an aspect of the present invention is a data display device that displays data on a display unit, and includes an acceleration detection unit that detects acceleration applied to the data display device, and the acceleration detection unit detects the acceleration. A pattern detection unit that detects a pattern of change in acceleration and a display control unit that controls a display mode of the display unit based on a pattern of change in acceleration detected by the pattern detection unit.

  In the data display device according to the present invention, it is preferable that the display control unit controls a range of data to be displayed on the display unit based on a pattern of acceleration change detected by the pattern detection unit.

  In the data display device according to the present invention, the display control unit may control a scale or resolution of data to be displayed on the display unit based on an acceleration change pattern detected by the pattern detection unit. preferable.

  Further, the data display device according to the present invention further includes an inclination detection means for detecting an inclination of the data display apparatus, and the display control means is based on detection outputs of the pattern detection means and the inclination detection means. It is preferable to control the display mode of the display unit.

  In the data display device according to the present invention, the display control unit controls a relative position of data to be displayed on the display unit based on detection outputs of the pattern detection unit and the inclination detection unit. Is preferred.

  A data display device according to another aspect of the present invention is a data display device for displaying data on a plurality of display devices, a motion detection unit for detecting a motion of the data display device, and a detection by the motion detection unit. Display control means for controlling the display mode of the plurality of display devices based on output, wherein the display control means causes each of the plurality of display devices to display different ranges of display target data. Features.

  In the data display device according to the present invention, the plurality of display devices are preferably two liquid crystal display devices.

  A data display program according to an aspect of the present invention is a data display program executed in a data display device that displays data on a display unit, and a step of detecting an acceleration applied to the data display device by a computer; The step of detecting the detected acceleration change pattern and the step of controlling the display mode of the display unit based on the detected acceleration change pattern are executed.

  A data display program according to another aspect of the present invention is a data display program executed in a data display device that displays data on a plurality of display devices, and a step of detecting a movement of the data display device on a computer. And a step of controlling a display mode of the plurality of display devices based on the detection output of the movement, and in the step of controlling the display mode, data to be displayed is respectively displayed on each of the plurality of display devices. A different range is displayed.

  A computer-readable recording medium according to the present invention records the data display program according to the present application as described above.

  A data display device according to still another aspect of the present invention is a data display device that displays data on a display device that performs display such that a different screen can be seen depending on the viewing angle. It is characterized in that display is performed so that screens with different levels of detail can be seen with respect to display target data.

  A data display device according to another aspect of the present invention controls a display mode of the display device based on a motion detection unit that detects a motion of the data display device and a detection output of the motion detection unit. It is preferable to further include display control means.

  In the data display device according to another aspect of the present invention, the motion detection means is a means for detecting an acceleration applied to the data display device, and detects a pattern of change in acceleration detected by the motion detection means. Preferably, the display control means controls the display mode of the display device based on the acceleration change pattern detected by the pattern detection means.

  A data display device according to another aspect of the present invention is a data display device that displays data on a display device that performs display such that a different screen can be seen depending on the viewing angle, and the display device displays data depending on the viewing angle. The display is performed such that a screen displaying different ranges of the target data can be seen.

  According to an aspect of the present invention, the display mode of the display unit is controlled based not on the magnitude of acceleration with respect to the apparatus but on the acceleration pattern.

  Thus, when the user moves the data display device in order to execute the desired display control, the data display device can be moved further to return to the original position or after the movement to be executed. The data display device may be configured not to execute display control that cancels the desired display control even if acceleration occurs in a direction opposite to that generated when the device is stationary. It becomes possible.

  Therefore, according to the present invention, in the data display device, display control can be performed based on an easy operation of moving the data display device itself, and display control that cancels the control content desired by the user is executed. Therefore, the desired control content can be reliably maintained.

  According to another aspect of the present invention, display control is performed based on the movement of the data display device, and different ranges of display target data are displayed on each of the plurality of display devices provided in the data display device. Is done.

  Accordingly, in the data display device, display control can be performed based on an easy operation of moving the data display device itself, and the maximum range of images can be displayed on a plurality of display devices. The desired display mode is surely executed.

  According to still another aspect of the present invention, by using a display device that displays different screens depending on the screen to be viewed, the data display device can have a larger display area than the area of the display device itself. That is, in the data display device, the display area can be increased while ensuring portability.

  According to still another aspect of the present invention, particularly when a display device is optically realized, it is not necessary to perform display switching by electrical control of a CPU or the like. Lower prices can be achieved. In addition, the user can experience an effect equivalent to switching the display instantaneously by changing the angle at which the user views the display device. Thereby, it can be said that the present invention is particularly useful when the user frequently wants to compare the detailed image and the entire image of the display target data.

  According to another aspect of the present invention, it can be said that the present invention is particularly useful when the user frequently wants to compare screens with different display targets.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
The data display device of the present embodiment detects the movement of the data display device itself and changes the range of data to be displayed accordingly.

FIG. 1 is an overall block diagram of a data display apparatus according to a first embodiment of the present invention.
The data display device includes a central processing unit (CPU) 101, a read only memory (ROM) 102, a random access memory (RAM) 103, an input unit 104, a display unit 105, a medium 106, and a power switch 107. Each component shown in FIG. 1 exchanges data and control signals via the data bus 108. The medium 106 may be configured to be detachable from the main body of the data display device. The power switch 107 is for controlling the supply of power (not shown) to each component, but is not essential for the description of the present invention. Description is omitted.

  When the CPU 101 executes a program recorded in the ROM 102 (or the medium 106), the document data stored in the medium 106 is loaded into the RAM 103 and displayed on the display unit 105. Note that the CPU 101 can also execute a program recorded on the medium 106.

FIG. 2 is a block diagram of the input unit 104.
The input unit 104 includes a controller 201, an up scroll key 202, a down scroll key 203, a left scroll key 204, a right scroll key 205, a page return key 206, a page feed key 207, a zoom in key 208, a zoom out key 209, and a tilt detection module. 210, a page number register 211, an X coordinate register 212, a Y coordinate register 213, a scaling register 214, and a data bus 215. Each component in the input unit 104 exchanges data and control signals via the data bus 215. The data bus 215 is connected to the data bus 108.

  The controller 201 controls other components in the input unit 104 and mediates access to them from the outside of the input unit 104. Further, the controller 201, the up scroll key 202, the down scroll key 203, the left scroll key 204, the right scroll key 205, the page return key 206, the page feed key 207, the zoom in key 208, and the zoom out key 209 are operated by the user. Key to be played.

  The tilt detection module 210 detects a normal vector of a plane including a display surface in a display device (a display device 302 described later) included in the display unit 105. It is assumed that the inclination detection module 210 is always in a state where a detection value can be output.

FIG. 3 is a block diagram of the display unit 105.
The display unit 105 includes a controller 301, a display device 302, a display image generator 303, a display image memory 304, and a data bus 305. Each component in the display unit 105 exchanges data via the data bus 305. The data bus 305 is connected to the data bus 108.

  The controller 301 controls each component in the display unit 105 and mediates access to them from outside the display unit 105. The display unit 105 includes both a function for controlling display of data and a function for displaying data.

  FIG. 4 is a diagram showing an example of the appearance of the data display device according to the present embodiment. Each component in FIG. 4 is as described above. Note that, as shown in FIG. 4, the data display device is covered with a casing 200 at its outer shell. The installation location of the above-described inclination detection module is not particularly limited as long as it is within the casing 200 or the surface thereof.

  FIG. 5 is a diagram showing an example in which the data display device according to the present embodiment is realized on a mobile phone. In FIG. 5, the components that originally exist in the mobile phone are diverted as components of the display device.

  4 and 5, the area of the display 302 is limited in order to keep the size of the display device itself to a size convenient for carrying.

  Assume that the RAM 103 stores semantically organized display data in order. In this embodiment, the display data is a 24-bit color image for each page. Note that even if the data stored in the RAM 103 is in a format other than an image (for example, text data), it is considered that the data is converted (rendered) into image data at the stage of display for each page. It does not lose generality.

  Although there is display data that is not in a page format, such data can be regarded as a single large page, and the case where display data is handled as an image for each page is excluded from the scope of the present invention. Of course not.

  The overall operation of the data display device according to the present embodiment will be described below with reference to the flowchart of FIG. Note that when the CPU 101 accesses each component of the input unit 104, it is actually via the controller 201. However, in the following description, it is not refused each time.

  When the power switch 107 is turned on, the CPU 101 initializes the page number register 211 to 0 (step S701). The page number register 211 indicates the number of the currently displayed page. That is, this value of 0 indicates that the first page of display target data is displayed on the display device 302. In the following description of the present specification, it is assumed that the page number starts from 0.

  Next, the CPU 101 causes the display unit 105 to display page data indicated by the value of the page number register 211 (step S702). The processing of the display unit 105 in step S702 will be described later.

  Next, the CPU 101 checks whether or not the page feed key 207 is pressed (step S703). If it has been pressed, the CPU 101 checks whether the value of the page number register 211 matches the number of the last page (step S704). If they match, no more pages can be sent, and the process returns to step S703. If they do not match, the value of the page number register 211 is incremented by 1 (step S705), and the process returns to step S702. As a result, the next page is displayed on the display device 302.

  If the page feed key 207 has not been pressed in step S703, the CPU 101 checks whether the page return key 206 has been pressed (step S706). If the button is pressed, the CPU 101 checks whether the value of the page number register 211 matches 0 (the number of the first page) (step S707). If they match, the page cannot be returned any further, and the process returns to step S703. If they do not match, the value of the page number register 211 is decremented by 1 (step S708), and the process returns to step S702. As a result, the previous page is displayed.

  If the page return key 206 has not been pressed in step S706, the process returns to step S703.

Next, the operation of the display unit 105 in step S702 will be described.
FIG. 7 is a flowchart of the subroutine of step S702 of the display unit 105.

  Hereinafter, the processing content of step S702 will be described in detail with reference to FIGS.

  The controller 301 reads the current inclination of the data display device from the inclination detection module 210 (step S801).

  Next, the controller 301 determines whether or not the current inclination of the data display device is within a predetermined range (step S802). Note that the actual value of the range to be determined here is stored in the ROM 102, for example.

  If the inclination is within a predetermined range, the display image generator 303 creates an overall image (image corresponding to the page) from the entire data to be displayed, which is obtained from the page number register 211 and the display data memory 103. And stored in the display image memory 304 (step S803). On the other hand, in other cases, the display image generator 303 obtains the X coordinate register 212, the Y coordinate register 213, and the scaling from the data corresponding to the page to be displayed, obtained from the page number register 211 and the display data memory 103. A detailed image of the obtained location is created with reference to the register 214 and stored in the display image memory 304 (step S804). Setting values of the X coordinate register 212, the Y coordinate register 213, and the scaling register 214 will be described later.

  Next, the controller 301 displays the contents of the display image memory 304 on the display device 302 (step S805), and returns the process to step S702.

Here, the determination of the controller 301 in step S802 will be described.
There are various ways of determining “whether the current inclination is within a predetermined range”, for example, the one shown in FIG. 8 is also included. In FIG. 8, when the normal vector 902 with respect to the plane 901 including the display surface of the data display device is included in a cone 904 having a predetermined size such that the vertex 903 coincides with the center point of the data display device. It is assumed that the controller 301 determines that “the current inclination is within a predetermined range”. Note that the length of the normal vector can be determined as appropriate. The normal vector originally gives only the direction, and its length and direction are not uniquely determined, but its length is determined under appropriate normalization, and its direction is plane. The orientation is such that it faces 901 (the same applies hereinafter). In this embodiment, it is assumed that such normalized normal vectors are obtained from the inclination detection module 210.

  The normal vector can be represented by three values corresponding to the respective X, Y, and Z components, and the cone existence range can also be represented by an inequality related to X, Y, and Z, as described above. It is clear that a correct judgment can be made. Further, the determination result is not affected by the normal vector normalization method because of the shape of the cone.

  FIG. 9 is a diagram for explaining a modification of the determination of the inclination. In FIG. 9, unlike FIG. 8, the normal vector 902 is not included in the cone 904.

  In order to determine whether or not the inclination of the display surface 901 is within a predetermined range in the manner shown in FIG. 8 or FIG. 9, it is necessary to extract the inclination of the data display device.

  In step S801, the tilt detection module 210 can extract the tilt of the data display device by using a tilt sensor. Regarding the tilt sensor, there are already many known techniques, for example, the technique disclosed in Japanese Patent No. 3622505. Other known techniques such as a gyro may be used as long as the tilt can be detected with sufficient accuracy. Absent. No matter what method is used to detect the inclination, it is still a variation of the present invention, so no further details will be entered.

  Moreover, the reason why the inclination of the data display device is represented by a normal vector is appropriate for the explanation. In other words, there is no problem even if the tilt is expressed by other methods. In other words, the representation with the normal vector does not limit how the data display device actually represents (handles) the inclination internally.

  FIG. 10 is a diagram for explaining the meaning of the X coordinate register 212 and the Y coordinate register 213 used in step S804.

  In FIG. 10, the X coordinate register 212 and the Y coordinate register 213 are shown as the coordinates of the center point 1103 of the display target area 1102 to be displayed in the page 1101. In FIG. 10, the X coordinate is defined in the horizontal direction, the Y coordinate is defined in the vertical direction, and the upper left corner of the page 1101 is the origin. The page 1101 is divided into cells that can be divided in units of pixels. That is, as shown in FIG. 11, when the center of the display target area 1102 is coincident with the upper left end of the page 1101, both the X coordinate register 212 and the Y coordinate register 213 are set to 0.

  In the data display device, every time the up scroll key 202 is pressed, the controller 201 decrements the Y coordinate register 213. In the data display device, the Y coordinate register 213 is incremented by the controller 201 every time the down scroll key 203 is pressed. Each time the left scroll key 204 is pressed, the X coordinate register 212 is decremented by the controller 201, and every time the right scroll key 203 is pressed, the X coordinate register 212 is incremented by the controller 201.

  By such an operation and the processing in step S804 described above, the detailed image displayed in step S805 based on the operations on the up scroll key 202, the down scroll key 203, the left scroll key 204, and the right scroll key 205 is displayed on the page 1101. It is controlled where it hits.

  Note that the decrement and / or increment of the X coordinate register 212 and / or the Y coordinate register 213 is performed as long as the respective values fall within the range of 0 to the respective maximum coordinates. In other cases, the controller 201 Will ignore each key press.

  Further, in the state shown in FIG. 11, the display target area 1102 includes only the lower right quarter of the page 1101. For this reason, the detailed image to be displayed has no data other than the lower right quarter. A display mode of the display device 302 in this state is schematically shown in FIG.

  As can be understood from FIG. 12, the display content 1301 (area indicated by hatching) exists only in the lower right quarter of the display device 302. That is, the remainder of the display device 302 is blank 1302. Such a blank 1302 always occurs if the display target area 1102 does not fit on the entire page 1101 even if the position and size are different.

  When such a blank 1302 is generated, a certain pattern may be displayed, but the values of the X coordinate register 212 and the Y coordinate register 213 are set in advance so that such a situation does not occur. Limiting is also conceivable.

  FIG. 13 schematically shows such a control mode. Specifically, FIG. 13 shows that the display target area 1102 always fits within the page 1102. The reason why the display target area 1102 fits in the page 1102 in this way is that the values of the X coordinate register 212 and the Y coordinate register 213 are appropriately limited.

Returning to FIG. 10 again, the application of the scaling register 214 will be described.
The scaling register 214 outputs the relative size of the display target area 1102 with respect to the page 1101. In the present embodiment, the value output from the scaling register 214 changes from the minimum value 0.01 to the maximum value 1.00, with increments of 0.01. Each time the zoom-in key 208 is pressed, the value of the scaling register 214 is incremented by 0.01, and every time the zoom-out key 209 is pressed, the value of the scaling register 214 is decremented by 0.01.

  Note that the value ranges and increments shown in this specification for the scaling register 214 are examples, and the values stored in the scaling register 214 are relative sizes of the display target area 1102 with respect to the page 1101. Anything can be used as long as it can be expressed with sufficient accuracy.

  Of course, the increment and decrement of the value of the scaling register 214 is not performed when the result is out of the range of the upper limit value or the lower limit value. In this case, the controller 201 ignores pressing of each key.

  Even if such control is performed, the display target area 1102 may still protrude from the page 1101 depending on the values of the X coordinate register 212, the Y register 213, and the scaling register 214.

  In order to avoid such a situation, the upper limit value of the scaling register 214 may be determined with reference to the values of the X coordinate register 212 and the Y register 213. An example of such a determination method will be described below.

  The value of the X coordinate register 212 is X, the value of the Y coordinate register 213 is Y, the horizontal width of the page 1101 is T, the vertical width is U, the horizontal width of the display target area 1102 is V, and the vertical width is W. Then, equations (1) and (2) are given.

V / 2 ≦ X (1)
V / 2 ≦ TX (2)
From these equations, the following equations (3) and (4) are derived.

V ≦ 2X (3)
V ≦ 2T-2X (4)
When the upper limit value of the scaling register 214 is M, MT (the product of M and T) is the upper limit (minimum upper bound) of V. From the equations (3) and (4), the following equation (5) and Equation (6) are derived.

MT ≦ 2X (5)
MT ≦ 2T-2X (6)
Then, the following equations (7) and (8) are derived from the equations (5) and (6).

M ≦ MIN (2X / T, 2 (TX) / T) (7)
M ≦ MIN (2Y / U, 2 (U−Y) / U) (8)
Then, the following formula (9) is derived by combining the formula (7) and the formula (8).

M ≦ {2X / T, 2 (TX) / T, 2Y / U, 2 (U−Y) / U} (9)
By doing so, the values of X, (T−X), Y, and (U−Y) indicated by double arrows 1104, 1105, 1106, and 1107 in FIG. 10 are MT / 2 and MT /, respectively. 2, MU / 2, and MU / 2 can be ensured, so that the display target area 1102 fits on the page 1101.

  Of course, instead of the value of the scaling register 214, the value of the X coordinate register 212 and the value of the Y register 213 can be adjusted so that the display target area 1102 fits on the page 1101. If the method is predetermined as shown in FIG. 12, there is no problem.

  In any case, the zoom-in key 208 and the zoom-out key 209 control such an operation and the above-described step S804 to control how much the page 1101 covers the detailed image displayed in the step S805. Become.

  Note that the correspondence between the tilt of the data display device used in the present embodiment, the detailed image, and the entire image is merely an example. In contrast to the case described here, the tilt of the data display device is previously set in step S802. It is conceivable to display a detailed image when it is within a predetermined range, and it does not matter if the magnitude relationship does not always hold between the inclinations corresponding to the detailed image and the entire image. However, in order for the user to easily store operations corresponding to both, it is desirable that the set of inclination values corresponding to the whole image and the detailed image is not complicated.

  With this operation, the user can switch between the detailed image and the whole image of the document without key operation, and can move back and forth between them, enabling more comfortable document browsing while grasping the detailed image and the whole image. it can.

[Second Embodiment]
The second embodiment of the present invention is a data display device according to the first embodiment described above, wherein the switching between the whole image and the detailed image, which has been performed based on the detection output of the tilt sensor, is performed by the detection output of the acceleration sensor. It is based on.

  The data display device of the present embodiment can operate more in line with the user's intention by taking out the temporal change in acceleration applied to the data display device as an “acceleration pattern” and using it for display control. It is characterized by that.

  Hereinafter, the data display device according to the present embodiment will be described focusing on differences from the first embodiment.

  FIG. 14 is a block diagram of the input unit 104. Controller 1501, Up scroll key 1502, Down scroll key 1503, Left scroll key 1504, Right scroll key 1505, Page return key 1506, Page feed key 1507, Zoom in key 1508, Zoom out key 1509, Acceleration detection module 1510, Page number register 1511, an X coordinate register 1512, a Y coordinate register 1513, a scaling register 1514, and a data bus 1515, and each component exchanges data and control signals via the data bus 1515. Note that the data bus 1515 is connected to the data bus 108. Components other than the acceleration detection module 1510 in FIG. 14 are the same as the corresponding components in FIG. 2 except for the points described below. The overview of the data display device of the present embodiment can be the same as that shown in FIG. Note that the installation position of the acceleration detection module 1510 is not particularly limited as long as it is within the casing 200 or the surface thereof. However, an acceleration that is involuntarily applied to the data display device (for example, an acceleration that is applied to the device when the rotating device rotates around the end of the device with the user holding the device lightly) is detected by the acceleration detection module 1510. In order to avoid the situation where the detection is performed as much as possible, it can be said that the acceleration detection module 1510 is preferably installed in the casing 200 near the center (or center of gravity) of the data display device.

  The overall operation of the data display device according to this embodiment is the same as that described with reference to FIG. 6 in the first embodiment.

  FIG. 15 is a flowchart for explaining the operation of display unit 105 in step S702 (see FIG. 6) in the present embodiment. A detailed description will be given below with reference to FIG. 15 and FIG.

  The controller 301 reads the acceleration pattern number from the acceleration detection module 1510 (step S1601).

  Examples of the value of the “acceleration pattern number” include integers of 0 to 2. These values are associated with the actual acceleration pattern and stored in the ROM 102, for example. Specifically, for example, the value “0” is associated with an operation in which the user applies acceleration to the data display device in a direction approaching the user. The value “1” is associated with an operation in which the user applies acceleration to the data display device in a direction away from the user. The value “2” is associated with an operation other than the operation associated with “0” or “1”.

  Next, the controller 301 determines whether or not the acceleration pattern number read in step S1601 is “2” (step S1602). If it is “2”, the process returns to step S1601, and if it is not “2”, the process proceeds to step S1603. Note that the acceleration pattern number “2” means that no operation is performed or an operation other than the operation associated with “0” or “1” described above is performed. It means to mean.

  Next, the controller 301 determines whether or not the acceleration pattern number read in step S1601 represents an operation in which the user moves the data display device away from the user, that is, whether or not the acceleration pattern number is “1”. Determination is made (step S1603). If it is determined that the acceleration pattern number is “1”, the controller 301 causes the display image generator 303 to obtain an overall image (an image corresponding to the entire page) obtained from the page number register 211 and the display data memory 103. ) Is created and stored in the display image memory 304 (step S1604).

Processing in the data display device at this time will be described with reference to FIG.
The vector 1701 corresponding to the acceleration applied to the data display device can be divided into a component vector 1703 perpendicular to the display surface 1702 of the display device 302 and a component vector 1704 perpendicular to the vector 1703.

  The basic idea is that the vector 1701 corresponding to the acceleration that the user intends to apply to the data display device at this time has a component in a direction approaching the user 1707, that is, a component in the same direction as the arrow 1705. If a detailed image is displayed and has a component in the same direction as the arrow 1706, that is, a component away from the user 1707, the entire image is displayed.

  At this time, the user actually stops the data display device in any case (whether the user approaches or moves away). That is, the apparatus is stopped after being moved closer or away. For this reason, the data display device is accelerated in the opposite direction without taking time. That is, if the user approaches the user and then stops, the data display device is subjected to acceleration in a direction approaching the user and then in a direction away from the user without taking time. Conversely, if the user moves away from the user and then rests, the data display device is accelerated in the direction away from the user, and then the acceleration is applied in the direction approaching the user without taking time. It is done.

  Therefore, the user's intended motion cannot be detected by simply detecting which direction of acceleration is applied to the data display device. From this, the data display apparatus of this Embodiment detects the acceleration pattern which is a temporal pattern of the acceleration added to the said data display apparatus. Specifically, in the present embodiment, as will be described later, as a method of detecting an acceleration pattern intended by the user, the acceleration applied to the data display device after the data display device is moved (when the data display device is stationary). Detect the direction of the.

  Referring to FIG. 15 again, if the acceleration pattern number is not “1”, the controller 301 corresponds to the page to be displayed, which is obtained from the page number register 1511 and the display data memory 103 in the display image generator 303. From the data to be processed, the X coordinate register 1512, the Y coordinate register 1513, and the scaling register 1514 are referenced to create a detailed image of the obtained location and store it in the display image memory 304 (step S1605). Regarding the setting of the values of the X coordinate register 1612, the Y coordinate register 1613, and the scaling register 1614, the contents described in the first embodiment can be applied as they are.

  Here, the correspondence between the direction of acceleration and the contents stored in the display image memory 304 in steps S1602 to S1605 will be described.

  When the user 1707 moves the data display device away from the user 1707, the data display device receives an acceleration including a component in the direction of the arrow 1706, and then the user 1707 stops the device so that the data display device , An acceleration including a component in the direction of the arrow 1705 is received. In the present embodiment, as will be described later, the direction of acceleration intended to be applied by the user to the data display device is specified by detecting the acceleration caused by the stationary state.

  Next, the controller 301 displays the contents of the display image memory 304 on the display device 302, and ends (step S1606).

  Here, the contents of the process of extracting the acceleration pattern number in step S1601 will be described.

  In the present embodiment, the following factors A and B are taken into consideration for display control based on acceleration.

  A. In the state where the user holds the data display device, there is usually a state where some acceleration is constantly applied when a minute object is included.

B. The user does not always intend to perform any operation.
FIG. 17 shows a configuration example of the acceleration detection module 1510 for taking out an acceleration pattern in consideration of these factors.

  The acceleration detection module 1510 includes a controller 1801, an acceleration sensor 1802, an acceleration register 1803, a status register 1804, a latest acceleration register 1805, a clock 1806, a time register 1807, a sampler 1808, and a data bus 1809. In the acceleration detection module 1510, each component exchanges data and control signals via the data bus 1809. Note that the data bus 1809 is connected to the data bus 1515.

  The controller 1801 controls other components in the acceleration detection module 1510 and mediates access to them from outside the acceleration detection module 1510. Details of the operation of each of the above components will be described later. Further, throughout this specification, A / D conversion is performed as necessary, and is not essential for realizing the present invention, and thus is not particularly mentioned. Unless otherwise specified, the output from the acceleration sensor 1802 is the latest value at the time of extraction sampled by the sampling unit 1808 at regular time intervals.

  Regarding acceleration sensors, there are already many known techniques, for example, those disclosed in Japanese Patent No. 3148937. Other techniques such as a sensor using an image can be used as long as acceleration can be detected with sufficient accuracy. Can be used. For example, Japanese Patent Application Laid-Open No. 2004-309947 filed by the applicant of the present application discloses a technique for detecting the speed of a data display device using a camera attached to the data display device. It is clear that it can be diverted as an acceleration sensor by calculating the change of the velocity. No matter what method is used to detect the acceleration, it is still within the scope of the present invention, so no further details will be given here.

  FIG. 18 is a flowchart showing the operation of the acceleration detection module 1510 in step S1601.

  Hereinafter, the operation of the acceleration detection module 1510 will be described with reference to FIGS. 17 and 18.

  The controller 1801 extracts the vector 1703 corresponding to the component in the direction perpendicular to the display surface 1702 of the display device 302 from the acceleration sensor 1802, and stores it in the acceleration register 1803 (step S1901). Depending on the orientation, the value of the acceleration register 1803 is either positive or negative. Here, the direction toward the display surface (the direction of the arrow 1705 in FIG. 16) is positive.

  Next, the controller 1801 checks whether or not the absolute value of the value of the acceleration register 1803 is below a certain value (step S1902).

  If not less than a certain value, the value of the acceleration register 1803 is substituted into the latest acceleration register 1805 (step S1903). If it is below a certain level, the process proceeds to step S1904.

  After assigning a value in step S1903, the controller 1801 assigns 0 to the status register 1804 (step S1905), and the process proceeds to step S1906.

  In step S1906, the controller 1801 outputs 0 as the acceleration pattern number and ends.

  On the other hand, in step S1904, the controller 1801 determines whether the status register 1804 is 0 (step S1904).

  If 0, the controller 1801 substitutes the current time read from the clock 1806 into the time register 1807 (step S1907). If not 0, the process proceeds to step S1909.

  In step S1909, the controller 1801 assigns 1 to the status register 1804, and then the process proceeds to step S1906.

  On the other hand, in step S 1908, the controller 1801 compares the current time read from the clock 1806 with the time recorded in the time register 1807. If the predetermined time or more has not elapsed since the time recorded in the time register 1807, the process proceeds to step S1906. If so, the process advances to step S1910.

  In step S1910, the controller 1801 determines whether or not the value of the latest acceleration register 1805 is positive (step S1910). If it is positive, 1 is output as the value of the acceleration pattern number (step S1911), and if it is negative, 0 is output (step S1912), and the process is terminated.

  By performing such processing, acceleration is applied to the data display device, and after a certain period of time has passed since the data display device was stationary, the direction of acceleration is taken out, and the acceleration pattern is based on the direction. Is taken out.

  For example, as described above, a user who wants to display a detailed image applies acceleration in the display surface direction (the direction represented by the arrow 1705 in FIG. 16) to the data display device. In this case, in order to make the data display device stand still, the user moves it in the direction of the display surface without being aware of it, and then does not spend time, but in the direction opposite to the display surface (indicated by an arrow 1706 in FIG. 1). Direction) is applied to the data display device. In the processing described with reference to FIG. 18, only the acceleration after a certain time has elapsed after the data display device has been stopped (after receiving the acceleration) is extracted by executing the processing from step S1901 to step S1910. It is. That is, the acceleration opposite to the display surface is taken out as the user's intention. When the intention is taken out in this way, an acceleration pattern number of “0” is output.

  On the other hand, in the case of a pattern in which an acceleration in the direction opposite to the display surface (arrow 1706 in FIG. 16) is applied to the data display device and then the reverse acceleration is applied, the acceleration pattern number “1” is assigned. Is output.

  Thus, in this embodiment, one user's intention is extracted from a series of acceleration patterns applied by the user to the data display device, and an acceleration pattern corresponding to the intention is detected. Of course, the operations to be learned by the user are: “If you want to display a detailed image, move the device in the direction of the display surface” and “If you want to display the entire image, it is the opposite direction to the display surface. The user does not need to be aware of the acceleration that occurs when the data display device is stationary.

  The correspondence between the direction of acceleration applied to the data display device and the detailed image / overall image described in the present embodiment is merely an example. For example, different correspondences such as reversing the correspondence between the direction of acceleration and the detailed image / overall image are still within the scope of the present invention.

  In the present embodiment, an example in which display content (particularly, a range of data to be displayed) is controlled by acceleration applied to the data display device has been described. However, in terms of control by acceleration, between acceleration and force, “ Since there is a relationship of “force = mass × acceleration”, controlling by the force applied to the data display device is equivalent to controlling by the acceleration, and is merely a difference in expression.

  In addition, the “certain time” referred to regarding the processing in step S1908 will be described. If the user moves the device in a certain direction and then moves the device with the intention of accelerating the device in the opposite direction, it is possible to change the direction in which the device is accelerated instantaneously as long as it is a human action. It is considered difficult. In other words, if the user moves the device with the above intention, it can be assumed that the device will be stationary for at least some time before the acceleration in the reverse direction is applied to the device (however, here) The “state of rest” in this case is considered to include a state in which such acceleration is very small). Here, “a certain amount of time” corresponds to the “certain time” mentioned regarding the processing in step S1908. Based on this assumption, if there is no “still” as described above when the direction of acceleration applied to the device is changed, the movement of the device at that time is simply vibration that does not involve the intention of the user. It is thought that it may be due to.

  Such a “certain time” may be set as a limit value of a stationary time required when a human performs an operation of reversing the acceleration of the system. Of course, in practice, this value should be determined experimentally so as to depend on the form and weight of the apparatus. For example, it is conceivable that the apparatus is provided with a function for setting such a time and can be customized for each user.

[Third Embodiment]
In the third embodiment of the present invention, the position and range of the displayable area are controlled using the inclination sensor and the acceleration sensor used in the first embodiment and / or the second embodiment, respectively. It is a data display device. In the first embodiment and the second embodiment, the detailed image and the whole image are switched. In the third embodiment, the range of data to be displayed is continuously changed.

  Hereinafter, the same points as in the first embodiment and / or the second embodiment, or the points that can be easily analogized will not be repeated, and differences will be mainly described.

  The configuration of the entire data display device shown in FIG. 1 and the flowchart showing the overall operation of the data display device shown in FIG. 6 are also applied to the third embodiment.

FIG. 19 is a block diagram of the input unit 104 of this embodiment.
The input unit 104 includes a controller 2001, an up scroll key 2002, a down scroll key 2003, a left scroll key 2004, a right scroll key 2005, a page return key 2006, a page feed key 2007, a zoom in key 2008, a zoom out key 2009, and a tilt detection module. 2010, an acceleration detection module 2011, a page number register 2012, an X coordinate register 2013, a Y coordinate register 2014, a scaling register 2015, and a data bus 2016. Each component in the input unit 104 exchanges data and control signals via the data bus 2016. The data bus 2016 is connected to the data bus 108. Components other than the inclination detection module 2010 in FIG. 19 are the same as the corresponding components in FIG. 14 except for the points described below.

  FIG. 20 is a flowchart for explaining the operation in step S702 of the display unit 105 of the present embodiment. Hereinafter, a detailed description will be given with reference to FIG. 20 and FIG. 3 described above.

  The controller 301 reads the component in the direction perpendicular to the display surface of the display device of the latest acceleration applied to the acceleration pattern number data display device from the acceleration detection module 2011 (step S2101).

  Next, the controller 301 determines whether the acceleration pattern number read in step S1601 is “2” (step S2102). If the acceleration pattern number is “2”, the process proceeds to step S2106; otherwise, the process proceeds to step S2103.

  In step S2103, the controller 301 determines whether the acceleration pattern number is “1”, that is, whether the direction of the acceleration based on the operation intended by the user is the direction toward the display surface or not. Determination is made (step S2103). If the acceleration pattern number is “1”, the controller 301 decrements the value of the scaling register 2015 (step S2104). On the other hand, if it is not “1”, the controller 301 increments the value of the scaling register 2015 (step S2105).

  It should be noted that the discussion described in the first embodiment can be applied to the relationship between the increment / decrement of the scaling register 2015 and the upper limit value / lower limit value in steps S2104 and S2105.

  Next, the display image generator 303 refers to the X coordinate register 2013, the Y coordinate register 2014, and the scaling register 2015 from the data corresponding to the page to be displayed, obtained from the page number register 2012 and the display data memory 103. Thus, a detailed image of the obtained location is created and stored in the display image memory 304 (step S2106). The setting of the values of the X coordinate register 2013 and the Y coordinate register 2014 will be described later.

  Next, the controller 301 displays the contents of the display image memory 304 on the display device 302 (step S2107), and ends the process.

  Regarding the setting of the values of the X coordinate register 2013 and the Y coordinate register 2014, the up scroll key 2002, the down scroll key 2003, the left scroll key 2004, and the right scroll key 2005 can be used as in the first embodiment. Although it is good, along with this, in the third embodiment, a method of setting as follows by the inclination detection module 2010 is provided.

FIG. 21 is a block diagram of the inclination detection module 2010.
The inclination detection module 2010 includes a controller 2201, an inclination detection device 2202, a u coordinate register 2203, a v coordinate register 2204, and a data bus 2205. Each component of the inclination detection module 2010 exchanges data and control signals via the data bus 2205. Note that the data bus 2205 is connected to the data bus 108. It is assumed that the normal vector 2204 of the plane 2203 including the display surface of the display device is always obtained from the tilt detection device 2202.

  FIG. 22 is a flowchart for explaining a procedure for obtaining values of the X coordinate register 2013 and the Y coordinate register 2014 by the inclination detection module 2010. Hereinafter, a description will be given with reference to FIGS. 21 and 22.

  The controller 2201 obtains two-dimensional coordinates (u, v) on the reference plane from the normal vector obtained from the inclination detection device 2202 (step S2301). Two-dimensional coordinates (u, v) on the reference plane will be described later.

  Next, the controller 2201 converts the u coordinate obtained in step S2301 into an X coordinate and stores it in the X coordinate register 2013 (step S2302). This conversion will be described later.

  Next, the controller 2201 converts the v coordinate obtained in step S2301 into a Y coordinate, stores it in the Y coordinate register 2014, and ends (step S2303). This conversion will be described later.

  It is assumed that the processing from step S2301 to step S2303 is always performed while the data display device is activated.

  Here, the process executed by the inclination detection module 2010 in step S2301 will be described with reference to FIG. When this process is executed, a reference surface 2401 is determined in advance, and a reference surface normal vector 2402 is determined in advance with respect to the reference surface 2401. In addition, two-dimensional coordinates (u, v) on the reference plane 2401 are determined. On the other hand, a normal vector 2404 of a plane 2403 including the display surface of the display device can be considered. In addition, two-dimensional coordinates (u, v) on the reference plane 2401 can be determined.

  Under these assumptions, as shown in FIG. 24, the component 2501 in the u direction and the component in the v direction of the normal vector 2404 can be calculated from the projection 2501 of the normal vector 2404 onto the reference plane 2401. The u component and the v component obtained in this way are stored in the u coordinate register 2203 and the v coordinate register 2204, respectively. The u-coordinate register 2203 and the v-coordinate register 2204 store values expressed in fixed-point numbers, but may be integer values as long as the accuracy is sufficient.

  Next, a conversion method from the u coordinate register 2203 to the value of the X coordinate register 2013 will be described with reference to the flowchart of FIG. 25 in order to explain the conversion in steps S2302 and S2303. Of course, such a conversion method is merely an example.

  The controller 2201 determines whether or not the value of the u coordinate register 2203 is 0 (step S2601). If it is 0, the process ends. If it is not 0, the process proceeds to step S2602.

  In step S2602, the controller 2202 determines whether or not the value of the u coordinate register 2203 is positive (step S2602). If not positive, the process proceeds to step S2603, and if positive, the process proceeds to step S2604.

  In step S2603, the controller 2202 determines whether or not the value of the X coordinate register 2013 is the lower limit value (step S2603). If it is the lower limit value, the process is terminated, and if it is not the lower limit value, the process proceeds to step S2605.

  In step S2604, the controller 2202 determines whether or not the value of the X coordinate register 2013 is the lower limit value (step S2604). If it is the lower limit value, the process is terminated. If it is not the lower limit value, the process proceeds to step S2606.

  In step S2605, the controller 2202 decrements the value of the X coordinate register 2013 and ends the process.

  On the other hand, in step S2606, the controller 2202 increments the value of the X coordinate register 2013 and ends the process.

  Similarly, FIG. 26 shows a flowchart of processing for conversion from the v coordinate register 2204 to the value of the Y coordinate register 2014. Since it can be easily understood from the conversion method from the u coordinate register 2203 to the value of the X coordinate register 2013 described above, the description is omitted.

  By such a control, if the display surface of the data display device is tilted to the left, the display area moves leftward (moves in the direction 0 in which the X coordinate decreases, and if the display surface is tilted to the right, the display area moves to the right If the display screen is tilted to the opposite side to the user's side, the display area moves upward (the direction in which Y decreases), and the display surface is tilted to the user's front side. If the data display device is regarded as a plate and the center of the display range is regarded as a ball, the movement of the ball caused by tilting the plate This means that the movement of the center of the display range corresponds to the user's intuition, and such an operation system appropriately determines the correspondence between the tilt and the change in the range of the displayed data. That's what happened.

  In addition to the point of the present invention, the range of data to be displayed is controlled using the acceleration applied to the data display device or the inclination of the data display device.

  In the third embodiment, the following is adopted as the parameter representing the range of display data, that is, the display area, and the former is controlled by the inclination of the data display device and the latter is controlled by the acceleration applied to the data display device. Yes.

The value of the scaling register 2015 that represents the scale or resolution The parameter that represents the relative position of the display area in the entire data (specifically, the values of the X coordinate register 2013 and the Y coordinate register 2014)
Of course, such a control method is an example, and the former may be controlled by the acceleration applied to the data display device, and the latter may be controlled by the inclination of the data display device. Further, as a parameter representing the range of data to be displayed, a page number or the like can be controlled by acceleration applied to the data display device or inclination of the data display device. Such control is performed in the X-coordinate register 2013, the Y-coordinate register 2014, and the scaling register 2015 that have been described so far by incrementing or decrementing values using acceleration applied to the data display device or inclination of the data display device. Instead, since it is only necessary to increment or decrement the page number register 2012, it will be apparent to those skilled in the art at least how to achieve this in the above description.

  Of course, if there are other parameters indicating the range of data to be displayed, they may be controlled, and this is a variation of the present invention.

  Further, data having a page structure has been described as an example, but this is not an essential element for the present invention. For example, map-like data having no page structure may be used. For such data, control using the X coordinate register 2013, the Y coordinate register 2014, and the scaling register 2015 is considered appropriate for controlling the displayed data range.

  On the other hand, in the case of flow type data such as HTML (Hyper Text Markup Language) having no page structure, the display start byte offset and the display end byte offset can be used in place of the page number register 2012. It will also be apparent that the range of data to be displayed can be controlled by increasing or decreasing them according to the acceleration applied to the data display device or the inclination of the data display device.

  The present invention is characterized in that the display content of the data display device is controlled by changing a parameter indicating the range of data to be displayed according to the acceleration applied to the data display device or the inclination of the data display device. That is, the display of the flow type data such as the HTML is still within the range of variations of the present invention.

  According to the present embodiment, the user can continuously change the range of data to be displayed (particularly, the relative position of the displayed data in the entire data) without any key operation. This makes it possible to view the document more comfortably while changing the size and position of the display range as necessary.

  In this embodiment, the range of data to be displayed is controlled based on the acceleration applied to the data display device or the tilt of the data display device. However, the acceleration applied to the data display device and the tilt of the data display device are It can be considered as an example of (spatial) movement of the display device. Another example is the speed at which the data display device moves in space. Other motions of the data display device that can be detected can be used for the same purpose. Of course, it is preferable to be able to realize an operation system that matches the user's intuition.

[Fourth Embodiment]
The data display apparatus according to the fourth embodiment of the present invention is similar to the data display apparatus according to the third embodiment, but includes two display devices (a display device 2802 and a second display device 2803, which will be described later). The first embodiment is different from the third embodiment in that a whole image (an image corresponding to a page) is always displayed. Here, the same points as in the third embodiment or the points that can be easily inferred will not be repeated, and differences will be mainly described.

  The configuration of the entire data display device shown in FIG. 1 and the flowchart showing the overall operation of the data display device shown in FIG. 6 are also applied to the fourth embodiment.

FIG. 27 is a block diagram of the display unit 105 of the present embodiment.
The display unit 105 includes a controller 2801, a display device 2802, a second display device 2803, a display image generator 2804, a display image memory 2805, a second display memory 2806, and a data bus 2807. Each component of the display unit 105 exchanges data via the data bus 2807. Note that the data bus 2807 is connected to the data bus 107. The controller 2801 controls components other than the controller 2801 in the display unit 105 and mediates access from outside the display unit 105 to them.

  FIG. 28 is a flowchart for explaining the operation of the display unit 105 in step S702. Hereinafter, the operation of the data display device according to the present embodiment will be described in detail with reference to FIG. 28 and FIG.

  The display image generator 2804 creates an overall image (image corresponding to the page) of the data to be displayed from the data corresponding to the page to be displayed, obtained from the page number register 2012 and the display data memory 103, and the second The image is stored in the display image memory 2806 (step S2901).

  Next, the controller 2801 reads from the acceleration detection module 2011 the component in the direction perpendicular to the display surface of the display device of the latest acceleration applied to the acceleration pattern number data display device (step S2902).

  Next, the controller 2801 determines whether or not the number component of the acceleration pattern read out in step S1601 is 02 (step S2903). If the acceleration pattern number is 2, the process proceeds to step S2907; otherwise, the process proceeds to step S2904.

  In step S2904, the controller 2801 determines whether or not the acceleration pattern number component is 1. If the acceleration pattern number component is 1, the controller 301 decrements the value of the scaling register 2015 (step S2905). On the other hand, if not, the controller 301 increments the value of the scaling register 2015 (step S2906).

  Regarding the relationship between the increment / decrement of the scaling register 2015 and the upper limit value / lower limit value in steps S2104 and S2105, the argument described in the first embodiment can be applied as it is.

  Next, the display image generator 303 refers to the X coordinate register 2013, the Y coordinate register 2014, and the scaling register 2015 from the data corresponding to the page to be displayed, obtained from the page number register 2012 and the display data memory 103. Thus, a detailed image of the obtained location is created and stored in the display image memory 2805 (step S2907). The setting of the values of the X coordinate register 2013 and the Y coordinate register 2014 will be described later.

  Next, the controller 301 displays the contents of the display image memory 2805 on the display device 2802 (step S2908).

  Next, the controller 301 displays the contents of the second display image memory 2806, which is the entire image, on the second display device 2803, and ends (step S2909).

  There are no particular restrictions on the physical form of the display device 2802 that displays the detailed image and the second display device 2803 that displays the entire image. In the most straightforward form, separate display devices may be prepared and assigned to the respective display devices. However, as shown in FIG. 29, the display devices are displayed as different areas or different windows on the single display device 3001. It is conceivable that 2802 and the second display device 2803 (displaying the whole image) are realized.

  It is also conceivable to configure the display device 2802 and the second display device 2803 using different areas of one display device. And even if it is a case where the display devices 2802 and 2803 are comprised by such one display device, it is still the category of this invention.

  For example, for a plurality of windows in the window system, each window can be regarded as a display device. The present invention can be realized by causing each of the plurality of windows to display a detailed image or an overall image. An additional advantage of such a configuration using different areas of one display device is that the hardware configuration of the display device is simplified.

  It is also conceivable that the display device 2802 and the second display device 2803 are configured by a display device (for example, a two-screen liquid crystal) that can display different displays on one screen depending on the viewing angle (for example, by changing the viewing angle of the liquid crystal display). When the display devices 2802 and 2803 are configured by a two-screen liquid crystal, the user sees a display with different degrees of detail for the display target data depending on the angle at which the liquid crystal screen is viewed. That is, depending on the viewing angle (for example, when viewing the screen from the right direction and when viewing the screen from the left direction), a detailed image or a whole image can be viewed.

  Similarly, in place of the above-mentioned device such as the two-screen liquid crystal display device, even if the display device has three or more types of displays that differ depending on the viewing angle, the display device can display the level of detail of the display target data depending on the viewing angle. A configuration in which different displays are visible is possible. For example, a configuration is possible in which the level of detail is provided so that the display can be viewed at a level of detail that differs depending on the viewing angle. Specifically, when three levels of detail are provided, the user sees different levels of detail when viewing the screen from the right, from the front, and from the left. Can do.

  The display may be performed so that different ranges of data in the display target can be seen depending on the viewing angle. Specific examples of such display modes include the following.

  In other words, depending on the viewing angle, the table of contents and the text are switched and displayed, the text and annotations are switched and displayed, and sentences written in different languages (for example, English and Japanese) are switched and displayed. Displayed or switched between displaying and hiding questions such as question collections and study reference books, and switching between displaying and hiding the worm-eaten part of the worm-eaten text (fill-up part of the hole-filling problem) A possible mode is possible.

  By applying the display mode in this way, the user can easily move back and forth between related display screens only by changing the viewing angle.

  Regardless of whether the display device consists of two screens or more, the advantage of configuring the data display device with a device that can display different displays depending on the viewing angle is that each display is configured with a separate display device. Compared to the above, each display area can be increased.

  In particular, when a device that can display different displays depending on the viewing angle is optically realized, the display can be switched only by the display device without using a CPU, so that the power consumption is reduced and the hardware price is low. It leads to change. From the user's perspective, this is equivalent to switching the display instantaneously, and is particularly useful when it is desired to frequently compare the detailed image and the entire image.

  A parameter indicating the scale or resolution of the display area or displayed data (the value of the scaling register in this embodiment) and a parameter indicating the relative position of the display area or displayed data in the entire data The point of this embodiment is that (in this embodiment, the values of the X coordinate register and the Y coordinate register) are governed by the acceleration applied to the data display device or the inclination of the data display device.

  Furthermore, of the detailed image and the entire image described so far, the entire image can also be regarded as a special case of the detailed image. By taking this one step forward and providing multiple scaling registers, multiple images can be considered. These can be realized as what has been called a detailed image so far.

  It should be noted that the number of screens is not limited to two in this embodiment. Note that the plurality of display devices are preferably configured by a liquid crystal display device.

  Through the operations described so far, the user can view the document more comfortably while grasping both the detailed image and the entire image of the document at the same time without any key operation.

  In addition, since the user can change the range of displayed data without key operation, the user can view the document more comfortably.

  In addition, as a feature of the data display device of the present embodiment described above, a means for detecting the tilt of the device is unnecessary when compared with the data display devices of the first to third embodiments. Can also be mentioned.

[Fifth Embodiment]
In the data display device of the fifth embodiment of the present invention, the acceleration detection module 1510 of the second embodiment of the present invention uses a value obtained from the acceleration sensor 1802 as a method for extracting an acceleration pattern at regular time intervals. In this case, only when it matches a pre-registered pattern, it is extracted as an acceleration pattern.

Hereinafter, differences from the second embodiment will be briefly described.
A configuration example of the acceleration detection module 1510 of this embodiment is shown in FIG.

  The acceleration detection module 1510 includes a controller 3201, an acceleration sensor 3202, a sampling device 3203, an acceleration pattern memory 3204, a representative pattern memory 3205, and a matching device 3206. Each component of the acceleration detection module 1510 exchanges data and control signals via the data bus 3207. Note that the data bus 3207 is connected to the data bus 1515. The controller 3201 controls components other than the controller 3201 in the acceleration detection module 1510 and mediates access from outside the acceleration detection module 1510 to them.

  The acceleration sensor 3202 performs the same operation as the acceleration sensor 1802 of the second embodiment. The sampler 3203 samples the output of the acceleration sensor 3202 and sequentially stores it in the acceleration pattern memory 3204.

  The acceleration pattern memory 3204 is a FIFO (first in first out) memory that can store nine values, as schematically shown in FIG. The set of nine values is in accordance with the dimension of a vector in the representative pattern memory 3205, which will be described later.

  The representative pattern memory 3205 stores a representative pattern which is an acceleration pattern according to the user's intention. An example of this is visualized in FIG.

  A solid line in the horizontal direction indicates that the acceleration is zero, a point above the positive acceleration indicates a positive acceleration, and a point below the negative acceleration indicates a negative acceleration. The acceleration pattern representing the operation of moving the data display device in the direction approaching the user is obtained by sampling the acceleration pattern as shown in FIG. 33 at regular time intervals (indicated by crosses in the figure). As described in the second embodiment, it should be noted that the acceleration in the positive direction is not simply detected.

  As can be understood from FIG. 33, in this embodiment, the representative pattern is represented by a (9-dimensional) vector having nine elements, and the three values surrounded by the circle R in the figure are the same. In addition, the element can take a negative value.

  Another example of the representative pattern is shown in FIG. In the example shown in FIG. 34, the direction of acceleration is opposite to that shown in FIG. 32 in the first half and the second half. Here, the first half corresponds to a period during which the user intends to apply acceleration to the data display apparatus, and the second half corresponds to a period during which the user applies acceleration to the data display apparatus in order to stop the data display apparatus. .

  In FIG. 34, the representative pattern is represented by a set of nine values. It is assumed that such a set of nine values (vector) is stored in the representative pattern memory 3205 and numbered 0, 1, 2,..., N−1. N is the number of representative patterns (vectors) stored in the representative pattern memory 3205.

  Hereinafter, the number of the representative pattern shown in FIG. 32 is 0, and the number of the representative pattern shown in FIG. Therefore, the above N is 2.

  FIG. 35 is a flowchart showing the operation of the acceleration detection module 1510 in the present embodiment. With reference to FIG. 35, the operation of the acceleration detection module 1510 in the present embodiment will be described.

  The pattern matching unit 3206 reads the contents of the acceleration pattern memory 3204 (step S3201).

  Next, the pattern matching unit 3206 collates each representative pattern stored in the representative pattern memory 3205 with the contents of the acceleration pattern memory 3204 (step S3202). Here, it is assumed that the pattern matching unit 3206 calculates, as the similarity, a product obtained by normalizing the inner product of each representative pattern and the acceleration pattern as a vector by the product of the absolute values of both vectors. Therefore, the similarity takes a maximum value of 1 when both vectors match.

  The controller 3201 compares the maximum similarity with the threshold value set in advance (step S3703), and outputs N if small (step S3704). Otherwise, the controller 3201 responds. The representative pattern number is output (step S3705), and the process is terminated.

  Note that the similarity scale described here is merely an example, and there are many methods for finding a representative pattern most similar to the acceleration pattern.

  For example, instead of similarity as a vector, the Euclidean distance (taken by the square of the sum of the squares of the differences of each element) is normalized by the absolute value of both vectors, and the one with the smallest distance is The representative pattern may be the most similar. Although the number of dimensions as the vector of the representative pattern and the acceleration pattern is matched here, it is needless to say that even if this is not the case, collation can be performed by a technique such as dynamic programming.

  Here, the simplest case of N = 2 is considered as the number N of representative patterns, but of course, the configuration and operation when N is 3 or more can be easily understood, and therefore will be omitted.

  Of course, as the acceleration pattern, as long as it can be represented as a representative pattern and collated with the acceleration pattern, it is a matter of course.

[Modifications, etc.]
In the present invention described above, the display switching between the whole image and the detailed image of the document is controlled based on the acceleration applied to the data display device or the inclination of the data display device. Accordingly, the user can browse the document with an easy operation that does not require a key operation while easily grasping the entire image and the detailed image of the document in an information device such as a portable terminal having a small screen.

  In the present invention, the range of data to be displayed can be continuously controlled using the acceleration applied to the data display device or the tilt of the data display device. As a result, the relative position in the entire data can be continuously changed without any key operation, so that the user can view the document more comfortably while changing the size or position of the display range as necessary. .

  Further, in the present invention, when controlling the range of data to be displayed using the acceleration applied to the data display device, the correspondence between the direction of the acceleration and the change in the data range is appropriately determined, so that the intuition of the user is achieved. A consistent operation system can be realized.

  Further, in the present invention, in the form in which the range of data to be displayed is controlled using the tilt of the data display device, an operation that matches the intuition of the user is appropriately determined by appropriately determining the correspondence between the tilt and the change in the data range. A system can be realized.

  In addition, since an acceleration pattern representing a temporal change in acceleration according to the present invention is taken out and display is controlled accordingly, it is possible to easily perform an operation according to the user's intention.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 is an overall block diagram of a data display device according to a first embodiment of the present invention. It is a block diagram of the input part of the data display apparatus of FIG. It is a block diagram of the display part of the data display apparatus of FIG. It is a figure which shows an example of the external appearance of the data display apparatus of FIG. It is an external view of the example which implement | achieved the data display apparatus of FIG. 1 on the mobile telephone. 2 is a flowchart for explaining the overall operation of the data display device of FIG. 1. It is a flowchart of the subroutine of step S702 of FIG. It is a figure explaining operation | movement of the display part of FIG. It is a figure explaining the modification of operation | movement of the display part of FIG. It is a figure explaining the control content with respect to the display part in the data display apparatus of FIG. It is a figure explaining the control content with respect to the display part in the data display apparatus of FIG. It is a figure explaining the control content with respect to the display part in the data display apparatus of FIG. It is a figure explaining operation | movement of the display part of the data display apparatus of FIG. It is a block diagram of the input part of the data display apparatus which is the 2nd Embodiment of this invention. It is a flowchart explaining operation | movement of the display part of the data display apparatus which is the 2nd Embodiment of this invention. It is a figure explaining operation | movement of the display part of the data display apparatus which is the 2nd Embodiment of this invention. It is a block diagram of the acceleration detection module of the display part of the data display apparatus which is the 2nd Embodiment of this invention. It is a flowchart explaining the operation | movement of the acceleration detection module of the display part of FIG. It is a block diagram of the input part of the data display apparatus which is the 3rd Embodiment of this invention. It is a block diagram explaining operation | movement of the display part of the data display apparatus which is the 3rd Embodiment of this invention. It is a block diagram of the inclination detection module of the data display apparatus which is the 3rd Embodiment of this invention. It is a flowchart explaining operation | movement of the inclination detection module of FIG. It is a figure explaining operation | movement of the inclination detection module of FIG. It is a figure explaining operation | movement of the inclination detection module of FIG. It is a flowchart explaining operation | movement of the display part of the data display apparatus which is the 3rd Embodiment of this invention. It is a flowchart explaining operation | movement of the display part of the data display apparatus which is the 3rd Embodiment of this invention. It is a block diagram of the display part of the data display apparatus which is the 4th Embodiment of this invention. It is a flowchart explaining operation | movement of the display part of FIG. It is a figure which shows an example of the display mode in the display part of the data display apparatus which is the 4th Embodiment of this invention. It is a figure explaining the structural example of the acceleration detection module in the data display apparatus which is the 5th Embodiment of this invention. It is a figure explaining the structure of the acceleration pattern memory in the data display apparatus which is the 5th Embodiment of this invention. It is a figure explaining an example of the representative pattern stored in the representative pattern memory in the data display apparatus which is the 5th Embodiment of this invention. It is a figure explaining the pattern of the acceleration showing operation which moves an apparatus in the direction approaching the user in the data display apparatus which is the 5th Embodiment of this invention. It is a figure explaining an example of the representative pattern stored in the representative pattern memory in the data display apparatus which is the 5th Embodiment of this invention. It is a flowchart which shows operation | movement of the acceleration detection module in the data display apparatus which is the 5th Embodiment of this invention. It is a figure explaining the problem which invention should solve. It is a figure explaining the problem which invention should solve, especially the relationship between the acceleration required for a user to make a terminal still, and time.

Explanation of symbols

  101 CPU, 102 ROM, 103 RAM, 104 input section, 105 display section, 106 media, 107 power switch, 201, 1501, 1801, 2001, 2201, 2801, 3201 controller, 202, 1502, 2002 Up scroll key, 203, 1503, 2003 Down scroll key, 204, 1504, 2004 Left scroll key, 205, 1505, 2005 Right scroll key, 206, 1506, 2006 Page return key, 207, 1507, 2007 Page feed key, 208, 1508, 2008 Zoom in key , 209, 1509, 2009 Zoom out key, 210, 2010 Tilt detection module, 211, 1511, 2012 Page number register, 212, 1512, 2013 Coordinate register, 213, 1513, 2014 Y coordinate register, 214, 1514, 2015 Scaling register, 1510, 2011 Acceleration detection module, 1802, 3202 Acceleration sensor, 1803 Acceleration register, 1804 Status register, 1805 Nearest acceleration register, 1806 Clock, 1807 Time register, 1808, 3203 Sampler, 2202 Tilt detection device, 2203 u coordinate register, 2204 v coordinate register, 2802 Display device, 2803 Second display device, 2804 Display image generator, 2805 Display image memory, 2806 Second display image Memory, 3204 acceleration pattern memory, 3205 representative pattern memory, 3206 pattern matching unit.

Claims (14)

A data display device for displaying data on a display unit,
Acceleration detecting means for detecting acceleration applied to the data display device;
Pattern detection means for detecting a pattern of change in acceleration detected by the acceleration detection means;
A data display apparatus comprising: a display control unit that controls a display mode of the display unit based on a pattern of change in acceleration detected by the pattern detection unit.   The data display device according to claim 1, wherein the display control unit controls a range of data to be displayed on the display unit based on a pattern of acceleration change detected by the pattern detection unit.   3. The display control unit according to claim 1 or 2, wherein the display control unit controls a scale or resolution of data to be displayed on the display unit based on an acceleration change pattern detected by the pattern detection unit. The data display device described. An inclination detecting means for detecting an inclination of the data display device;
4. The data according to claim 1, wherein the display control unit controls a display mode of the display unit based on detection outputs of the pattern detection unit and the inclination detection unit. 5. Display device.   5. The data according to claim 4, wherein the display control unit controls a relative position of data to be displayed on the display unit based on detection outputs of the pattern detection unit and the inclination detection unit. Display device. A data display device for displaying data on a plurality of display devices,
Movement detecting means for detecting movement of the data display device;
Display control means for controlling the display mode of the plurality of display devices based on the detection output of the motion detection means,
The display control means causes each of the plurality of display devices to display different ranges of display target data.   The data display device according to claim 6, wherein the plurality of display devices are two liquid crystal display devices. A data display program executed in a data display device for displaying data on a display unit,
On the computer,
Detecting an acceleration applied to the data display device;
Detecting the detected acceleration change pattern;
And a step of controlling a display mode of the display unit based on the detected acceleration change pattern. A data display program executed in a data display device for displaying data on a plurality of display devices,
On the computer,
Detecting the movement of the data display device;
Controlling a display mode of the plurality of display devices based on the detection output of the movement,
In the step of controlling the display mode, a data display program that displays different ranges of display target data on each of the plurality of display devices.   A computer-readable recording medium on which the data display program according to claim 8 or 9 is recorded. A data display device that displays data on a display device that displays a different screen depending on the viewing angle,
The data display device according to claim 1, wherein the display device performs display such that a screen with a different level of detail of data to be displayed can be seen depending on a viewing angle. Movement detecting means for detecting movement of the data display device;
The data display device according to claim 11, further comprising display control means for controlling a display mode of the display device based on a detection output of the motion detection means. The movement detecting means is means for detecting an acceleration applied to the data display device,
Pattern detection means for detecting a pattern of change in acceleration detected by the motion detection means;
The data display device according to claim 12, wherein the display control unit controls a display mode of the display device based on an acceleration change pattern detected by the pattern detection unit. A data display device that displays data on a display device that displays a different screen depending on the viewing angle,
The data display apparatus according to claim 1, wherein the display device performs display such that screens displaying different ranges of display target data can be seen depending on a viewing angle.

Images