JP2018185837A - Display control apparatus, control method thereof, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display control apparatus which can display much more images during scrolling.SOLUTION: A display control apparatus controls scrolling to: scroll a plurality of images displayed in matrix on a screen; update a plurality of images to be displayed; and display undisplayed images of the above images to be displayed, on the basis of a scrolling direction of the images, on the screen in an order depending on the scrolling direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a display control apparatus for displaying a plurality of images, a control method therefor, and a program.

  In recent years, there are digital devices capable of index display that display a plurality of images such as photographs on one screen. In such devices, as the display screen becomes larger and higher in definition, the processing capacity of the control device is improved, and the capacity of the recording medium is increased, the number of devices capable of displaying more images at once is increasing. Yes.

  In addition, an index display on which a plurality of images are displayed at one time is scrolled in an arbitrary direction by operating an operation member such as a button, a lever, a rotary dial, or a touch panel.

  On the other hand, in order to display an image, reading of image data from a recording medium, decoding of the image data (including decompression processing when compressed), resizing to a display size, and development to VRAM For example, physical processing time is required. When a plurality of indexes are displayed, the series of processes is necessary for the number of display images, and the user has to wait for a certain amount of time before completing the display of all images on one screen.

  Therefore, for example, in Patent Document 1, the display order on the index screen is changed according to the conditions, and the image that the user has browsed so far is displayed first, and the image adjacent thereto is preferentially displayed. A method is disclosed. As a result, the user can discriminate the images that have been browsed without losing sight even after shifting to the index display.

JP 2001-231005 A

  However, conventionally, when scrolling is performed in index display, the processing time for displaying an image is not in time, and thus an image to be displayed may not be displayed during scrolling. This is more likely to occur as the scroll speed increases and as the number of images displayed at one time increases. In some cases, the image is hardly displayed during scrolling. When the image is hardly displayed, it is difficult to determine which image is switched by scrolling, and it is difficult for the user who is performing the scrolling operation to determine where to end the scrolling. In addition, after scrolling is stopped, the process waits for a processing time for displaying an image that is not displayed.

  When scrolling is performed in Patent Document 1, an image adjacent to an image that has been displayed up to that point, that is, an image in a direction that disappears by scrolling (the direction in which the image moves) is preferentially displayed. However, since the image adjacent to the image that has been displayed until then is no longer a display target earlier than other images that were newly displayed during scrolling, the process for displaying while the display target is in progress. The possibility of completion is low compared to other images. The processing for displaying another image to be newly displayed is also delayed by the amount performed after the image adjacent to the image that has been displayed so far. Therefore, even in Patent Document 1, there is a possibility that a large number of images that should be displayed during scrolling are not displayed as described above.

  In view of the above-described problems, an object of the present invention is to provide a display control device capable of displaying more images during scrolling.

In order to solve the above problems, the display control device of the present invention provides:
Update means for updating a plurality of images to be displayed by scrolling a plurality of images displayed in a matrix on the screen;
Based on the moving direction of the image by scrolling, comprising: a display control means for controlling to perform scrolling display for displaying an undisplayed image among the plurality of images to be displayed on the screen in a different order depending on the moving direction;
When the moving direction of the image by scrolling is from the top to the bottom of the screen, the display control means displays at least one first image arranged in the first row among the images to be displayed but not displayed. Performing the scroll display so as to display on the screen before the second image arranged in the second row below the first row on the screen,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, at least one third image arranged in the third row among the images to be displayed but not displayed is displayed on the screen. The scroll display is performed so that the image is displayed on the screen before the fourth image arranged in the fourth row above the third row.

  According to the present invention, it is possible to display more images during scrolling.

This is a hardware configuration of the digital camera 100. It is a schematic diagram of the relationship between the display VRAM and the buffer memory when scrolling is performed in the index display. It is a schematic diagram of the relationship between the display VRAM and the buffer memory when scrolling is performed in the index display. The schematic diagram of the relationship between VRAM for display and buffer memory at the time of scrolling in index display. It is a processing flowchart of index display. It is a flowchart of a scroll control process. It is a flowchart of a smooth scroll process. It is a flowchart of a process target column control process. It is a schematic diagram of a buffer memory provided with a spare storage area.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Description of hardware>
FIG. 1 shows a configuration of a digital camera 100 as an example of a display control apparatus to which each embodiment of the present invention can be applied. FIG. 1A is a block diagram illustrating a configuration example of a digital camera, and FIG. 1B is an external view.

  In FIG. 1, a CPU 101, a nonvolatile memory 102, a memory 103, a display control unit 104, an input unit 105, a drive device 106, a communication I / F 107, an image processing unit 121, and an imaging unit 122 are connected to an internal bus 111. . Each unit connected to the internal bus 111 can exchange data with each other via the internal bus 111.

  The nonvolatile memory 102 stores constants and various programs for operating the CPU 101. The memory 103 is composed of a RAM, for example. The CPU 101 controls each unit of the digital camera 100 using the memory 103 as a work memory, for example, according to a program stored in the nonvolatile memory 102. The input unit 105 receives a user operation, generates a control signal corresponding to the operation, and supplies the control signal to the CPU 101. The input unit 105 includes buttons (including direction buttons 105-1 arranged in a cross), a rotary wheel 105-2, a touch panel 105-3 as a pointing device, and the like as operation members that receive user operations. The touch panel is an input device that outputs coordinate information according to a position touched with respect to, for example, a planar input unit. As a pointing device, a mouse or a trackball may be used instead of the touch panel. The CPU 101 controls each unit of the digital camera 100 according to a program based on a control signal generated and supplied by the input unit 105 in response to a user operation performed on the input device. Thereby, it is possible to cause the digital camera 100 to perform an operation according to the user operation.

  When a touch panel is used as the input unit 105, the input unit 105 and the display 110 can be configured integrally. For example, the touch panel is configured such that the light transmittance does not hinder the display of the display 110 and is attached to the upper layer of the display surface of the display 110. Then, the input coordinates on the touch panel are associated with the display coordinates on the display 110. Thereby, it is possible to configure a GUI (Graphical User Interface) as if the user can directly operate the screen displayed on the display 110.

  The display control unit 104 outputs a display signal for displaying an image on the display 110. For example, a display control signal generated by the CPU 101 according to a program is supplied to the display control unit 104. The display control unit 104 generates a display signal based on the display control signal and outputs the display signal to the display 110. For example, the display control unit 104 causes the display 110 to display a GUI screen constituting the GUI based on a display control signal generated by the CPU 101.

  The drive device 106 can be loaded with an external storage medium 108 such as a memory card, and reads data from the loaded external storage medium 108 and writes data to the external storage medium 108 under the control of the CPU 101. . The external storage medium 108 to which the drive device 106 can be attached is not limited to a semiconductor memory such as a memory card, and a disk recording medium such as a CD, DVD, or hard disk may be attached to the drive device 106. Reference numeral 202 denotes a slot lid for storing the external recording medium 108. A communication interface (I / F) 107 performs communication with a network 120 such as a LAN or the Internet based on the control of the CPU 101. Although a wired example is illustrated in FIG. 1B, wireless communication may be used.

  The imaging unit 122 includes a photographing lens including a focus lens, a shutter having a diaphragm function, an imaging element such as a CCD or CMOS element that converts an optical image into an electric signal, an A / D converter, and the like. The image processing unit 121 performs resizing processing and color conversion processing such as decoding, encoding, predetermined pixel interpolation, enlargement and reduction on the image data from the imaging unit or the image data read from the external storage medium 108 or the like.

<Description of operation>
Hereinafter, the operation of this embodiment will be schematically described with reference to FIGS.

  In the present embodiment, when a plurality of images are displayed as indexes on the display 110 and scrolled in the vertical direction, among the newly displayed images, an image arranged at a position far from the image displayed before scrolling. An example in which the display process is prioritized will be described. In the index display in this embodiment, a plurality of images are arranged in a matrix. Images are arranged in the index display in a predetermined order such as image file name order, image number order, shooting date / time order, etc., in order from the left end to the right end of one row, and then from the left end to the right end of the next row. Shall be placed. When all the images cannot be displayed on one screen, it is possible to display an image arranged in a previous or further row by scrolling the screen. In the present invention, the arrangement order (arrangement order) of images does not necessarily match the temporal display order, as will be described later.

  First, the display VRAM (display memory) and the buffer memory will be described. The memory 103 has a display VRAM area and a buffer memory area. When displaying an image on the display 110, the image to be displayed is read from the external storage medium 108 or the like, the image processing unit 121 decodes the image (including decompression processing if compressed), and displays the image to the display size. Resizing is performed and expanded (stored) in the buffer memory. Hereinafter, at least one of these processes is collectively referred to as a display preparation process. Of the image developed in the buffer memory, display data for one screen including the image to be displayed on the display 110 is copied and stored in the display VRAM. Display data stored in the display VRAM is displayed on the display 110 via the display control unit 104.

  FIG. 2 is a schematic diagram showing the relationship between the display VRAM and the buffer memory when scrolling is performed in the index display. FIG. 2A illustrates the state of the display VRAM and the buffer memory in a stationary state before scrolling. In the present embodiment, it is assumed that 42 images of 6 rows and 7 columns are displayed on one screen during index display. In the following, an image displayed in the Xth column of the Yth row is denoted as an image Y: X for convenience. In this case, as shown in FIG. 2A, in the buffer memory, the 0th column, the first row, which is one row before and after the image displayed on one screen (the image stored in the display VRAM), is added. 56 images (image 0: 1) to 7th row and 7th row (image 7: 7) are stored. Further, as shown in FIG. 2A, the display VRAM has 42 images of images 1: 1 to 6: 7 to be displayed on one screen among images stored in the buffer memory. Copied. The image copied to the display VRAM is displayed on the display 110 as illustrated in the display VRAM in FIG. In addition to the display VRAM image shown in the figure, other icons, information display, and the like may be displayed in a superimposed manner.

  FIG. 2B shows the state of the display VRAM and buffer memory when scrolling from bottom to top from the state of FIG. In the display VRAM in FIG. 2B (that is, the display contents on the display 110), all the images are moved from the bottom to the top as compared with FIG. Hereinafter, the scroll direction in this case is expressed as “up” (that is, the moving direction of the image in the scroll is referred to as the scroll direction). In FIG. 2B, the image of the first line before scrolling is partially displayed, and the amount of scroll movement is less than one line. When the scroll amount is less than the number of lines prepared in the buffer memory (one line before and after in this embodiment), the buffer memory is not updated, and the position of the area to be copied from the buffer memory to the display VRAM The display position can be moved by shifting. The copy range indicated by the broken line in FIG. 2B has moved downward by the amount the display image has moved upward from the copy range before scrolling (the range indicated by the broken line) shown in FIG.

  FIG. 2C shows the state of the display VRAM and the buffer memory when scrolling up one line from the state of FIG. 2A through the state of FIG. 2B. Scrolling further proceeds from the state of FIG. 2B, and scrolling further proceeds when the copy range to the display VRAM (range displayed on the display 110) is from the second line to the seventh line. In this case, the image in the eighth line, one line ahead, must be displayed. Therefore, at this point, the buffer memory image is updated so that it is lowered by one line, and the area where the 0th line has been stored is overwritten with the 1st line image, and the 1st to 8th line images are stored. To do. Since the image in the eighth line is an image that has not been stored in the buffer memory until now, it is read from the external storage medium 108 and the like, and the image processing unit 121 decodes the compressed image and prepares for display such as resizing to the display size. Processing is required. For this reason, it is not immediately stored in the buffer memory, but is delayed by the time required for the display preparation process. In the buffer memory of FIG. 2 (c), since it represents the state at the moment when scrolling has just advanced by one line, the state where images 8: 1 to 8: 7 on the eighth line are not yet stored is shown. Yes. In the following description, a portion indicated by black in the buffer memory indicates that an image to be stored is not yet stored.

  FIG. 3A shows the state of the display VRAM and the buffer memory when scrolling further upward through the states of FIGS. 2A to 2C. The copy range to the display VRAM extends from the first line before the start of scrolling in FIG. 2A to the image on the eighth line, and the copy range indicated by the broken line in FIG. The middle of the 8th line. However, since the scrolling progressed faster than the display preparation process for the images 8: 1 to 8: 5 in the eighth row is completed, the images 8: 1 to 8: 5 are not copied to the display VRAM. . Accordingly, in this state, the images 8: 1 to 8: 5 are not displayed on the display 110. In the present embodiment, it is assumed that display preparation processing is performed first from an image whose image arrangement order is far from the image displayed before scrolling in the same row. Therefore, in FIG. 3A described here, the image arrangement order from the image 1: 1 to the image 6: 7 displayed in FIG. 2A is farther than the image 8: 1, and the image 8: Display preparation processing is performed in descending order from 7.

  FIG. 3B shows the state of the display VRAM and the buffer memory when scrolling further upward through the states of FIGS. 2A to 2C and FIG. 3A. The copy range to the display VRAM extends from the first line before the scroll start of FIG. 2A to the image of the ninth line, and the copy range indicated by the broken line in the drawing is in the middle of the third line. The middle of the 9th line. However, since the display preparation process for the images 8: 1 to 8: 5 on the eighth line and the images 9: 1 to 9: 6 on the ninth line has finished scrolling faster, the display VRAM Image 8: 1 to image 8: 5 and image 9: 1 to image 9: 6 are not copied. As described above, in the present embodiment, when the scroll advances before the display preparation processing for all the images in the same row is finished, the display preparation processing for the image of the newly displayed row is changed to the previous display processing. Prior to the image that has not yet undergone display preparation processing in the row, this is performed first. In the example shown in the figure, when the scrolling progresses before the display preparation process for all the images in the eighth line is completed, the display preparation process for the newly displayed image on the ninth line is still displayed in the eighth line. Prior to an image that has not been processed, it is performed first. By doing so, the possibility that the display preparation process cannot catch up with the speed of scrolling and no image will be displayed for one line is reduced, and it becomes easy to identify the line where the scroll has advanced. ing.

  FIG. 3C shows the state of the display VRAM and the buffer memory when scrolling further upward through the states of FIGS. 2A to 2C, FIGS. 3A and 3B. The copy range to the display VRAM extends from the first line before the scroll start of FIG. 2A to the image of the eleventh line, and the copy ranges indicated by broken lines in the figure are the fifth and sixth lines. It is in the middle of the border between the eyes and the 11th line. In this example, the image 8: 1 in the eighth line 8: 1 to 8: 5, the images 9: 1 to 9: 6 in the ninth line, and the display preparation process for one image in the tenth line are faster than the end. Scroll progresses and reaches the 11th line. In this case, the display preparation process for the image 11: 7 is performed by giving priority to the display preparation process for the image of the eleventh line that has been newly displayed over the tenth line for which no display preparation process has been completed. ing. As described above, in the present embodiment, an image that is newly displayed by scrolling (an image on the 10th line in the figure) that is closer to the image displayed before scrolling (for example, the image on the 10th line in the figure). In the drawing, the display preparation process of the image on the 11th line is performed first in time. In other words, the display preparation processing of the image arranged on the opposite side to the scroll direction (the direction in which the image moves in scrolling) is performed earlier in time than the image arranged on the scroll direction side. In other words, the scroll direction and the opposite side are upstream with respect to the direction in which the image moves by scrolling. Once the display preparation process is finished and the image stored in the buffer memory is scrolled, the image is stored in the buffer memory at least as long as it is within the copy range to the display VRAM. Then, at the same time, the image is arranged closer to the scroll direction (image moving direction side, downstream side) than the image arranged on the opposite side to the scroll direction (opposite side to the image moving direction, upstream side). The image is no longer a display target due to the scrolling movement. Here, being out of display target means that it is not included in the copy range to the display VRAM. That is, among the images stored in the buffer memory at the same time, the image arranged in the row closest to the scroll direction (most upstream) has the longest display target period. Therefore, the display preparation process is most likely to end while it is a display target (while included in the copy range to the display VRAM). In other words, the display preparation process is started, but it is not included in the copy range to the display VRAM before the process ends, and the scroll advances without being displayed on the display 110. Least likely. As described above, in the present embodiment, among the images included in the copy range to the display VRAM that have not been subjected to the display preparation process, they are closest to the scroll direction (most opposite to the moving direction of the image). The image arranged in the row on the upstream side) is preferentially processed compared to other images. This can reduce the possibility that no image is displayed on one screen even when the scroll speed is increased.

  In addition, although the example which scrolled upward was demonstrated in FIG. 2, FIG. 3, it cannot be overemphasized that it can also scroll downward. FIG. 4 shows a schematic diagram of the relationship between the display VRAM and the buffer memory when scrolling downward.

<Processing procedure>
Next, a processing procedure for realizing the above-described operation will be described in detail with reference to the flowcharts of FIGS. The flowcharts of FIGS. 5 to 8 are realized by the CPU 101 expanding and executing the program recorded in the nonvolatile memory 102 in the work memory area of the memory 103 and controlling each part of the digital camera 100.

  First, the meanings of terms used for explaining the flowcharts of FIGS.

  Display order: indicates whether the temporal priority order for performing the display preparation process is the order from the top row to the bottom row of the matrix displayed on the display 110 or the order from the bottom row to the top row. variable. This variable varies depending on the scroll direction and is stored in the memory 103.

  Processing target row (processing target column): A variable indicating a row (column) of an arrangement position of an image to be subjected to display preparation processing and added to the buffer memory at a certain time. Since the image layout is uniquely determined by information such as the image file name, file number, and shooting date and time, if the layout position in the index display is known, the image can be uniquely identified by comparing it with the image layout order. Stored in the memory 103.

  Line Offset: A variable (integer value) for indicating a position where the range to be copied from the buffer memory to the display RAM is shifted by one line or less in order to make the scroll animation smoother than one line unit. Stored in the memory 103.

Default value of row offset: a constant indicating the number of times the display is updated for animation while scrolling exactly one row. In other words, a constant indicating the value of the row Offset when shifted by exactly one row. It is stored in advance in the nonvolatile memory 102. If the specified value of this row Offset is large, the animation becomes thinner, and if the specified value is small, the animation becomes coarser. The following formula is satisfied.
[Moving amount of display image on display screen in one display update in animation] = [number of vertical lines of display VRAM and buffer memory required for displaying one line] / [line offset specification] value]
Scroll counter: A variable that indicates the number of lines that should be further scrolled at a certain point in time. It is added or subtracted according to the operation from the user instructing to scroll the screen. When scrolling is actually performed, the number of scrolled lines is added or subtracted.

  Animation timer: A timer that counts the period until the display is updated once in scrolling. In general, the reciprocal represents the frame rate. The smaller this value, the higher the animation frame rate, but the higher the system load. (This period is a constant. Several tens of milliseconds)

<Index display process (FIG. 5)>
FIG. 5 is an overall flowchart of index display. When the image display mode is switched to the index display mode based on the user's operation or the like, the index display is started.

  In step S501, first, the CPU 101 initializes variables, display order = from top to bottom, processing target row = the upper end of the copy range to the display VRAM, processing target column = the left end in the same row, and row offset = 0. Set and store in memory 103.

  In step S502, the CPU 101 determines whether to end index display. When the power of the digital camera 100 is turned off or an operation for switching to a mode other than the index display is accepted, it is determined that the index display is terminated, the index display is terminated, and the process of FIG. 5 is terminated. In particular, when an instruction to end the index display is not received, it is determined that the index display is not ended, and the process proceeds to S503.

  In step S503, the CPU 101 performs scroll control processing. Details of this processing will be described later with reference to FIGS. In this process, a process target row (column) is determined based on a process for determining the number of lines to be scrolled, a process for determining the display order of images, a process for actually scrolling, a progress of scrolling, and a progress of display preparation process. Processing and the like.

  In step S <b> 504, the CPU 101 determines whether all images included in one screen currently being displayed are displayed. In other words, this is a determination as to whether or not the display preparation processing for all the images to be copied to the display VRAM has been completed. If it is determined that all are displayed, the process returns to S502, and if it is determined that all are not displayed, the process proceeds to S505.

  In step S <b> 505, the CPU 101 determines whether the display preparation process for the image that has started the display preparation process has been completed. If it is determined that the display preparation process has not ended, the process returns to S502. If it is determined that the display preparation process has ended, the process proceeds to S506.

  In step S506, the CPU 101 adds the image for which display preparation processing has been completed to the buffer memory. Accordingly, a new image is displayed on the display 110 when the display VRAM is updated in S708 and S709 of FIG. When scrolling stops and the animation timer does not work, every time display preparation processing for an unstored image is completed and added to the buffer memory, the buffer memory is switched to the display VRAM regardless of the animation timer. Shall be copied. As a result, images added after finishing the display preparation process after the scrolling is stopped are sequentially displayed on the display 110.

  In step S <b> 507, the CPU 101 starts display preparation processing for an image to be placed at the position of the current processing target row and processing target column. The display preparation process is performed in cooperation with the image processing unit 121 and the like, and is performed in parallel with the processes after S507. That is, even if the display preparation process is not finished, the process proceeds to S508.

  In step S <b> 508, the CPU 101 performs processing target column control processing for determining a new processing target column. Details of the processing target column control processing will be described later with reference to FIG.

<Scroll control processing (FIG. 6)>
Next, details of the scroll control processing will be described with reference to the flowchart shown in FIG. The scroll control process of FIG. 6 is the details of the process of S503 of FIG. 5 described above.

  In step S601, the CPU 101 determines whether an input of a scroll instruction from the user has been received. In the present embodiment, scrolling can be performed in any direction, upward or downward, depending on how to instruct scrolling. For example, when the upper button of the direction buttons arranged in the cross included in the input unit 105 is pressed, scrolling downward (scrolling to move the position of the displayed image downward. Above the currently displayed image). It is assumed that an instruction of “scrolling for browsing images arranged in (1)” is received. On the other hand, when the down button is pressed, scrolling upward (scrolling to move the position of the displayed image upward. Scrolling to view an image arranged below the currently displayed image. )). If it is possible to perform a scroll instruction on the touch panel, it is assumed that an instruction for scrolling upward by tracing the touch panel from the bottom to the top and an instruction for scrolling downward by tracing the top to the bottom are received. It is also possible to accept a scroll instruction according to the rotation direction by an operation of rotating the rotating wheel. If it is determined that the input of the scroll instruction is received, the process proceeds to S602, and if it is determined that the input of the scroll instruction is not received, the process proceeds to S610.

  In step S602, the CPU 101 determines whether the scroll instruction received in step S601 is an instruction to scroll downward. If it is instructed to scroll in the downward direction, the process proceeds to S603. Otherwise, it is instructed to scroll in the upward direction, and the process proceeds to S604.

  In S603, the CPU 101 decreases the value of the scroll counter by an amount corresponding to the operation amount of the operation for which the scroll instruction received in S601 has been performed. For example, if the upper button of the direction buttons is pressed once, the scroll counter value is decreased by one. If the operation is to trace the touch panel from top to bottom, the scroll counter value is decreased by a number corresponding to the traced distance. When the scroll counter becomes a negative value, the scroll counter scrolls down by the number of lines indicated by the absolute value of the scroll counter by the processing described later (the displayed image moves down and is displayed hidden behind the screen before scrolling). The image of the line that was not done is displayed). In S604, the CPU 101 increases the value of the scroll counter by an amount corresponding to the operation amount of the operation for which the scroll instruction received in S601 has been performed. This is an upside-down process of S603. As a result, when the scroll counter becomes a positive value, the scroll counter is scrolled up by the number of lines indicated by the scroll counter by the processing described later. (The displayed image moves up, and the image of the line that was not displayed hidden behind the screen before scrolling is displayed).

  In S605, the CPU 101 determines whether or not the value of the scroll counter is equal to or less than zero. If the value of the scroll counter is negative, the scroll direction is downward. Conversely, if the scroll counter value is a positive value, the scroll direction is upward. If it is determined that the value of the scroll counter is less than or equal to zero, the process proceeds to S606, and if the value of the scroll counter is a positive value, the process proceeds to S607.

  In step S <b> 606, the CPU 101 sets the display order, which is the priority order for performing the display preparation process, in the order from the upper line to the lower line of the matrix displayed on the display 110 and stores the display order in the memory 103. Here, the priority order of the upper row, which is the direction opposite to the downward direction in which the image is moved by the downward scroll, is increased.

  In step S <b> 607, the CPU 101 sets the display order from the lower row to the upper row displayed on the display 110 and stores the display order in the memory 103, contrary to step S <b> 606. Here, the priority order of the lower row, which is the direction opposite to the upward direction in which the image is moved by the upward scroll, is increased.

  In step S608, the CPU 101 determines whether the animation timer is operating. That is, it is a determination as to whether or not scrolling is in progress. If it is determined that the animation timer is not operating (not in the middle of scrolling), the process proceeds to S609, where the animation timer is started to execute scrolling according to the scroll instruction received in S601, and the process of FIG. Then, the process proceeds to S504 in FIG. On the other hand, if it is determined that the animation timer is operating (in the middle of scrolling), the process proceeds to S610.

  In S610, the CPU 101 performs a smooth scroll process. The smooth scroll process is a process of executing a smooth animation scroll by shifting the portion read from the buffer memory to the display VRAM by the amount of the row Offset every time the animation timer times out. Details of the smooth scroll process will be described later with reference to FIG.

  In S611, the CPU 101 determines whether or not the row Offset is zero. If it is determined that the row Offset is zero, the process proceeds to S612. The case where the row Offset is zero is a state in which the image group displayed in the index display is displayed at a position defined as exactly the integer row. On the other hand, if it is determined that the row Offset is not zero, the process of FIG. 6 is exited and the process proceeds to S504 of FIG. The case where the row Offset is not zero is a state in which the image group displayed in the index display is displayed at a position shifted by the amount of the row Offset from the position corresponding to the integer row. It is in the middle of scrolling and the animation timer is running.

  In S612, the CPU 101 determines whether or not the scroll counter is zero. This is a determination as to whether or not scrolling should be further performed when the display position of the image group displayed in the index display is exactly the integer position. If it is determined that the scroll counter is zero, it is not necessary to perform further scrolling, so the process of FIG. 6 is exited and the process proceeds to S504. If it is determined that the scroll counter is not zero, the process proceeds to S613, and a process for scrolling one more line is performed.

  In step S <b> 613, the CPU 101 determines whether the display order stored in the memory 103 is set from the upper line to the lower line. If the order is set from the upper line to the lower line, the process proceeds to S614; otherwise, that is, if the order is set from the lower line to the upper line, the process proceeds to S615.

  In S614, as another line is scrolled downward, the display preparation process for the line that is newly entered by scrolling is given priority over the line for which the display preparation process has been performed at that time. And the processing target column is updated, and one scroll counter value is consumed. The CPU 101 sets the processing target row as the uppermost row in the image displayed on the display 110, that is, the uppermost row in the image included in the copy range from the buffer memory to the display VRAM, and stores it in the memory 103. Further, the processing target column is set to the leftmost column in which no image is displayed in the row, and is stored in the memory 103. Then, the value of the scroll counter is increased by 1 to consume one scroll counter.

  In S615, as the upward scrolling is performed for another line, the display preparation process for the line that is newly entered by scrolling is given priority over the line for which the display preparation process has been performed at that time. And the processing target column is updated, and one scroll counter value is consumed. The CPU 101 sets the processing target row as the lowermost row of the image displayed on the display 110, that is, the lowermost row of the image included in the copy range from the buffer memory to the display VRAM, and stores it in the memory 103. Further, the processing target column is set to the rightmost column in which no image is displayed in the row, and is stored in the memory 103. Then, the value of the scroll counter is decreased by 1 to consume one scroll counter.

  When the process of S614 or S615 is completed, the process of FIG. 6 is exited and the process proceeds to S504 of FIG.

<Smooth scroll process (Fig. 7)>
Next, details of the smooth scroll process will be described with reference to the flowchart shown in FIG. The smooth scroll process of FIG. 7 is the details of the process of S610 of FIG. 6 described above.

  In step S701, the CPU 101 determines whether the animation timer is operating. If it is determined that the animation timer is not in operation, scroll animation display need not be performed, so the process of FIG. 7 is exited and the process proceeds to S611 of FIG. If it is determined that the animation timer is in operation, the process proceeds to S702.

  In step S702, the CPU 101 determines whether the animation timer has timed out. If it is determined that the animation timer has not timed out, it is not necessary to update the display yet, so the process of FIG. 7 is exited and the process proceeds to S611 of FIG. If it is determined that the animation timer has timed out, the display needs to be updated, and the process proceeds to S703.

  In step S <b> 703, the CPU 101 determines whether or not the row Offset is zero. When the line Offset is not zero, the image group displayed in the index display is in a state where it is displayed at a position shifted by the amount of the line Offset from the position exactly corresponding to the integer line, and is in the middle of scrolling. Therefore, if it is determined that the line Offset is not zero, the process proceeds to S705, and the animation timer is restarted to measure the time until the next display update. On the other hand, if the row Offset is zero, the process proceeds to S704.

  In S704, the CPU 101 determines whether or not the scroll counter is zero. When the line Offset is zero and the scroll counter is also zero, the image group is displayed at the exact position of the integer line, and there is no need to scroll beyond that line, so the display is not updated for animation. 7 is exited, and the process proceeds to S611 in FIG. On the other hand, if the scroll counter is not zero, it is necessary to further scroll, so the process proceeds to S705.

  In step S <b> 705, the CPU 101 restarts the animation timer to measure the time until the next display update for animation.

  In step S <b> 706, the CPU 101 determines whether the display order stored in the memory 103 is set from the upper line to the lower line. If the order is set from the upper line to the lower line, the process proceeds to S707. If not, that is, if the order is set from the lower line to the upper line, the process proceeds to S708. Note that the determination here is a step for determining the scroll direction so that the direction in which the line offset is shifted is the direction that matches the scroll direction. Therefore, instead of determining the display order, it may be determined whether or not the scroll counter is zero or less.

  In step S <b> 707, the CPU 101 reduces the row offset by one so as to move the image group displayed as an animation of scrolling downward by one step. Then, the display VRAM is updated by shifting the copy range from the buffer memory to the display VRAM by the updated value of the row Offset. Here, the one-step copy range is shifted in the direction of the upper line. As described above, the shift amount in one step is [amount of movement of display image on display screen (number of lines) in one display update in animation] = [display VRAM necessary for displaying one line and The number of vertical lines in the buffer memory] / [specified value of row offset]. With this process, the display on the display 110 is updated.

  In step S708, contrary to step S707, the CPU 101 increases the row offset by one so that the group of images displayed as an upward scroll animation is moved up by one level. Then, the display VRAM is updated by shifting the copy range from the buffer memory to the display VRAM by the updated value of the row Offset. Here, the one-step copy range is shifted in the direction of the lower row. With this process, the display on the display 110 is updated.

  In step S709, the CPU 101 determines whether or not the absolute value of the row Offset has reached a specified value. If it is determined that the specified value has been reached, the process proceeds to S710. The case where the specified value is reached is a case where scrolling for exactly one line is performed. If the specified value has not been reached, the process of FIG. 7 is exited and the process proceeds to S611 of FIG.

  In step S710, the CPU 101 sets the row Offset to zero, and sets the shift amount of the copy range from the buffer memory to the display VRAM to zero. At the same time, the image in the buffer memory is updated so as to move down one line or raise one line in accordance with the scroll direction. However, as described with reference to FIG. 2 (c), images to be newly loaded into the buffer memory in accordance with the update require time for display preparation processing, so they are not stored immediately, but sequentially after the display preparation processing is completed. Stored.

  When the process of S710 is completed, the process of FIG. 7 is exited and the process proceeds to S611 of FIG.

<Processing target column control process (FIG. 8)>
Next, details of the processing target column control processing will be described using the flowchart shown in FIG. The processing target column control process of FIG. 8 is the details of the process of S508 of FIG. 5 described above.

  In step S <b> 801, the CPU 101 determines whether the display order stored in the memory 103 is set from the upper line to the lower line. If the order is set from the upper line to the lower line, the process proceeds to S802. If not, that is, if the order is set from the lower line to the upper line, the process proceeds to S807.

  In step S <b> 802, the CPU 101 determines whether the processing target column stored in the memory 103 is the right end. If it is the right end, the process proceeds to S805, and if not, the process proceeds to S803.

  In step S <b> 803, the CPU 101 sets the processing target column to the column on the right one from the currently set column, and stores it in the memory 103. In step S804, the CPU 101 determines whether an image is already displayed at the set position of the processing target column. Specifically, it is determined whether or not an image that has already undergone the display preparation process is stored at the position of the set processing target column on the buffer memory. If it is determined that an image has already been displayed, the process proceeds to S805. If it is determined that no image is displayed, the process of FIG. 8 is skipped and the process proceeds to S502 of FIG. If it is determined that no image is displayed, the processing target column set in S803 is the column to be subjected to the next display preparation process (however, if scrolling does not proceed).

  S805 is processing performed when either the processing target column is determined to be the right end in S802 or the image is determined to be already displayed in the processing target column in S804. That is, since the display preparation processing has been completed for all the images of the processing target row at that time, processing for updating the processing target row is performed. In step S805, the CPU 101 determines whether the processing target row stored in the memory 103 is at the lower end of the copy range to the display VRAM. If it is at the lower end, the display preparation processing for all the images on the current screen has been completed, so there is no image to be subjected to further display preparation processing until scrolling proceeds. Therefore, the process of FIG. 8 is exited and the process proceeds to S502 of FIG. If it is determined that the lower end is not reached, the process advances to step S806, and the CPU 101 sets the processing target line one line below the current processing target line and stores it in the memory 103. Then, the processing target column is set to the leftmost column where no image is displayed in the processing target row, and is stored in the memory 103. Thereafter, the process of FIG. 8 is exited and the process proceeds to S502 of FIG.

  On the other hand, the processes of S807 to S811 are processes when the scroll direction is opposite to the processes of S802 to 806.

  In step S <b> 807, the CPU 101 determines whether the processing target column stored in the memory 103 is at the left end. If it is the left end, the process proceeds to S810, and if not, the process proceeds to S808.

  In step S <b> 808, the CPU 101 sets the processing target column to the column on the left one from the currently set column, and stores it in the memory 103. In step S809, the CPU 101 determines whether an image has already been displayed at the set position of the processing target column. Specifically, it is determined whether or not an image that has already undergone the display preparation process is stored at the position of the set processing target column on the buffer memory. If it is determined that an image has already been displayed, the process proceeds to S810. If it is determined that no image is displayed, the process of FIG. 8 is skipped and the process proceeds to S502 of FIG. If it is determined that the image is not displayed, the processing target column set in S808 is the column to be subjected to the next display preparation process (however, if scrolling does not proceed).

  S810 is processing performed when either the processing target column is determined to be the left end in S807 or when it is determined that an image is already displayed in the processing target column in S809. That is, since the display preparation processing has been completed for all the images of the processing target row at that time, processing for updating the processing target row is performed. In step S810, the CPU 101 determines whether the processing target row stored in the memory 103 is at the upper end of the copy range to the display VRAM. When it is at the upper end, all the images on the current screen have been subjected to the display preparation process, so there is no further image to be displayed until the scrolling proceeds. Therefore, the process of FIG. 8 is exited and the process proceeds to S502 of FIG. If it is determined that the upper end is not reached, the process advances to step S811, and the CPU 101 sets the processing target line one line above the current processing target line and stores it in the memory 103. Then, the processing target column is set to the rightmost column in which no image is displayed in the processing target row, and is stored in the memory 103. Thereafter, the process of FIG. 8 is exited and the process proceeds to S502 of FIG.

  Although not shown in the flowcharts described above, a scroll stop instruction from the user may be received via the input unit 105. For example, a determination step for determining whether or not a scroll stop instruction from the user has been received is provided before S601 in FIG. If a scroll stop instruction has not been received, the process proceeds to S601. If a scroll stop instruction has been received, the scroll counter is set to zero and then the process proceeds to S601. By doing in this way, the user can stop scrolling at an arbitrary timing while viewing the image displayed during scrolling.

  Further, in each of the flowcharts described above, an example has been described in which scrolling is realized by a smooth animation that updates the display with a movement amount of less than one line. However, such smoothing is not essential, and scrolling may be performed in units of one line. Absent. In that case, the specified value of the row Offset may be set to 1.

  The operations described with reference to FIGS. 2 to 4 are realized by the processes of FIGS. 5 to 8 described above. According to the processing of FIGS. 5 to 8, as described in FIGS. 2 to 4, a new line is displayed by scrolling while the display preparation process for the image arranged in a line at a certain time is being performed. In such a case, display preparation processing for an image in a new row is performed with priority. As a result, it is possible to reduce the possibility that no image is displayed on one screen even when the scroll speed is increased, and it is possible to display more images even during scrolling. Also, within the same row, display preparation processing is performed with priority given to an image that is farther in the arrangement order than the image displayed before scrolling, depending on the scroll direction. This allows the user to quickly check what range of images is currently displayed on the display screen during scrolling. Therefore, it is easy for the user who is performing the scroll instruction operation to determine where to stop scrolling. In addition, since more images can be displayed during scrolling, the number of images not yet displayed is small. Accordingly, the processing time from when the scrolling is stopped until all the images not displayed yet are displayed is reduced. That is, the time that the user waits until all images are displayed after the scrolling is stopped is reduced.

  Moreover, although the example which performs the scroll to an up-down direction was demonstrated above, of course, it is applicable also to what performs the scroll to the left-right direction. Furthermore, the present invention can be applied even when scrolling is possible in an arbitrary direction including an oblique direction. In this case, the above-described embodiment is performed by performing processing so that an image newly included in the display range is displayed by scrolling prior to an image included in the display range before the display range is changed by scrolling. Has the same effect as.

  In the above-described buffer memory, a storage area that is one line higher and lower than the number of lines displayed on the display 110 is prepared. However, a spare storage area having more lines may be provided. In this case, after the CPU 101 determines in step S504 in FIG. 5 that the display of all the images has been completed, the display preparation processing for the image to be stored in the spare area is continued. FIG. 9 shows an example in which a storage area having three lines higher and lower than the number of lines displayed on the display 110 is prepared in the buffer memory. When the row Offset is zero, the range to be copied onto the display VRAM is the visible storage area, the storage area prepared for the 3 row reserve above it is the upper reserve storage area, and the storage area prepared for the 3 row reserve below Is referred to as a lower preliminary storage area. For images stored in the visible storage area, display preparation processing is performed in the order described with reference to FIGS. 5 to 8 to store the images. Thereafter, a display preparation process is performed with priority given to an image of a row to be newly displayed when scrolling in the same direction as it is, and the image is stored in the preliminary storage area. For example, when scrolling in the upward direction, an animation in which an image enters from the lower direction is displayed on the display 110, that is, the image in the lower row is newly displayed. For this reason, after the image having undergone the display preparation process is stored in the visible storage area, the image is first added to the lower preliminary storage area before the image stored in the upper preliminary storage area. Conversely, when scrolling downward is performed, an image is added to the upper spare storage area before the lower spare storage area. As a result, it is possible to further reduce the image display closing immediately after the start of scrolling. Here, for the sake of convenience, the size of the spare storage area is half of the visible storage area, but the size is not limited according to the memory status of the system.

  Note that a function of switching a plurality of images displayed in the index display without scrolling may be added. For example, there may be a function of switching the images from the first line to the sixth line displayed on one screen from the seventh line to the twelfth line without scrolling. In that case, display preparation processing may be performed in an order different from that at the time of scrolling. For example, at the time of image switching without scrolling, if display preparation processing is performed with priority given to an image that is close in arrangement order to the image displayed before switching, it is determined whether switching has been performed in that direction. It becomes easy. For example, when the images from the first line to the sixth line are switched from the seventh line to the twelfth line without scrolling, the display preparation process is started from the seventh line. When the image from the first line to the sixth line is switched from the image of the fifth line to the zeroth line, the display preparation process is started from the zeroth line. On the other hand, even when multiple images displayed in index display are switched without scrolling, display preparation processing is performed first for images that are far from the previously displayed image, as with scrolling. It may be done. In this way, it is possible to quickly confirm up to which range of images the image after switching includes, and it becomes easier to determine whether switching should be performed.

  Further, the number of displayed images in the index display is not limited to the above example. The number of sheets displayed at a time may be switched. For example, in the example of FIGS. 2 to 4, 6 rows and 7 columns are displayed, but it may be switched to other numbers such as 3 rows and 3 columns or 10 rows and 10 columns. When switching to another number, the display preparation process may be performed in a different order from the scrolling. For example, when switching the number of images, if display preparation processing is performed with priority given to images that are close in arrangement order to the previously selected image, the image selected before switching is not lost after switching. Can be determined.

  Furthermore, although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. Furthermore, each embodiment mentioned above shows only one embodiment of this invention, and it is also possible to combine each embodiment suitably. Although the processing of each flowchart described above has been described as being performed by the CPU 101, the present invention is not limited thereto, and may be performed by a plurality of hardware sharing the processing.

  Further, in the above-described embodiment, the case where the present invention is applied to a digital camera has been described as an example, but this is not limited to this example. That is, the present invention is applicable to any display control device capable of scrolling a plurality of images, such as a personal computer, a PDA, a mobile phone terminal, a portable image viewer, a printer device with a display, a digital photo frame, a game machine, and a music player. It is.

(Other embodiments)
The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads the program code. It is a process to be executed. In this case, the program and the storage medium storing the program constitute the present invention.

Claims (47)

Update means for updating a plurality of images to be displayed by scrolling a plurality of images displayed in a matrix on the screen;
Based on the moving direction of the image by scrolling, comprising: a display control means for controlling to perform scrolling display for displaying an undisplayed image among the plurality of images to be displayed on the screen in a different order depending on the moving direction;
When the moving direction of the image by scrolling is from the top to the bottom of the screen, the display control means displays at least one first image arranged in the first row among the images to be displayed but not displayed. Performing the scroll display so as to display on the screen before the second image arranged in the second row below the first row on the screen,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, at least one third image arranged in the third row among the images to be displayed but not displayed is displayed on the screen. 3. The display control device according to claim 1, wherein the scroll display is performed so that the fourth image arranged in the fourth row above the third row is displayed on the screen before the fourth image. When the moving direction of the image by the scroll is from the top to the bottom of the screen, the first row is a top row of the screen among a plurality of rows in which the display target image is arranged,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, the third row is a row at the lower end of the screen among a plurality of rows in which the image to be displayed is arranged. The display control device according to claim 1. In the case where the moving direction of the image by the scroll is from the top to the bottom of the screen, the display control means may display the screen before displaying any first image arranged in the first row on the screen. When the image displayed on the screen further moves from the top to the bottom by the scroll, a new entry is made above the first row on the screen without displaying the first image arranged in the first row. The fifth image arranged in the fifth row is displayed on the screen before the first image arranged in the first row and the second image arranged in the second row. Do the scroll display as
When the moving direction of the image by scrolling is from the bottom to the top of the screen, the image displayed on the screen is displayed before any third image arranged in the third row is displayed on the screen. If the scroll further moves from bottom to top, the sixth row newly entered below the third row on the screen without displaying the third image arranged in the third row. The scroll display so that the sixth image arranged in the first row is displayed on the screen before the third image arranged in the third row and the fourth image arranged in the fourth row. The display control device according to claim 1, wherein: The display control means is configured to display the first image when the first image arranged in the first row is displayed on the screen when the image is moved from the top to the bottom of the screen by the scroll. If no new line has entered the upper side of the line, an image to be displayed but displayed in the line one line lower than the first line among the undisplayed images is displayed on the screen next. Perform the scroll display,
When the image is moved from the bottom to the top of the screen by the scroll, when all the third images arranged in the third row are displayed on the screen, the lower side of the third row is displayed. If no new line has entered, the scroll display is performed so that an image arranged in a line one line higher than the third line among the images to be displayed but not displayed is next displayed on the screen. The display control device according to claim 1, wherein the display control device is a display control device. The display control means is configured to display the second image after displaying all the first images arranged in the first row on the screen when the scroll is moving the image from the top to the bottom of the screen. If the second image arranged in a row is a display target, the scroll display is performed so that the undisplayed second image is displayed on the screen,
When the image is moved from the bottom to the top of the screen by the scrolling, the third image arranged in the fourth row even after all the third images arranged in the third row are displayed on the screen. 5. The display according to claim 1, wherein if the four images are to be displayed, the scroll display is performed so that the undisplayed fourth image is displayed on the screen. Control device. A determination unit for determining a direction in which the image displayed on the screen moves by scrolling;
The display control means performs the scroll display by changing a temporal order in which an undisplayed image is displayed on the screen based on the moving direction determined by the determination means. The display control apparatus according to claim 1, wherein the display control apparatus is a display control apparatus. Reading means for reading an image from an external storage medium;
Image processing means for executing image processing necessary for display on the image read by the reading means;
Expansion means for expanding the image processed by the image processing means into a buffer;
Storage means for copying the image developed by the development means from the buffer and storing it in a memory;
The display control apparatus according to claim 1, wherein the display control unit displays an image stored in the memory on the screen. When the moving direction of the image by the scroll is from the top to the bottom of the screen, the reading unit reads the first image arranged in the first row among the images to be displayed but not displayed. At least one of execution of image processing by the image processing unit, expansion to a buffer by the expansion unit, and storage in a memory by the storage unit precedes the second image arranged in the second row. To
When the moving direction of the image by scrolling is from the bottom to the top of the screen, reading by the reading unit is performed on the third image arranged in the third row among the images to be displayed but not displayed. From the fourth image arranged in the fourth row, at least one of execution of image processing by the image processing means, development in the buffer by the development means and storage in the memory by the storage means The display control apparatus according to claim 7, wherein the display control apparatus is also performed first.   The display control apparatus according to claim 7, wherein the image processing unit resizes the image read by the reading unit to a display size as the image processing. Update means for updating a plurality of images to be displayed by scrolling a plurality of images displayed in a matrix on the screen;
Based on the moving direction of the image by scrolling, comprising: a display control means for controlling to perform scrolling display for displaying an undisplayed image among the plurality of images to be displayed on the screen in a different order depending on the moving direction;
When the moving direction of the image by scrolling is from the right to the left of the screen, the display control means displays at least one first image arranged in the first column among the images to be displayed but not displayed. , Performing the scroll display so as to be displayed on the screen before the second image arranged in the second column on the left side of the first column on the screen,
When the moving direction of the image by the scrolling is from the left to the right of the screen, at least one third image arranged in the third column among the images to be displayed but not displayed is displayed on the screen. 3. The display control apparatus according to claim 1, wherein the scroll display is performed so that the fourth image arranged in the fourth column on the right side of the third column is displayed on the screen before the fourth image. When the moving direction of the image by scrolling is from the right to the left of the screen, the first column is a column at the right end of the screen among a plurality of columns in which the display target image is arranged,
When the moving direction of the image by scrolling is from the left to the right of the screen, the third column is a column at the left end of the screen among a plurality of columns in which the image to be displayed is arranged. The display control apparatus according to claim 10. When the moving direction of the image by the scroll is from the right to the left of the screen, the display control means is configured to display the screen before displaying any first image arranged in the first row on the screen. When the image displayed on the screen further moves from right to left by the scroll, a new entry is made to the right of the first column on the screen without displaying the first image arranged in the first column. The fifth image arranged in the fifth column is displayed on the screen before the first image arranged in the first column and the second image arranged in the second column. Do the scroll display as
When the moving direction of the image by the scroll is from the left to the right of the screen, the image displayed on the screen is displayed before any third image arranged in the third column is displayed on the screen. When the scroll further moves from left to right, the sixth image newly entered to the left of the third column on the screen is displayed without displaying the third image arranged in the third column. The scroll display is displayed so that the sixth image arranged is displayed on the screen before the third image arranged in the third column and the fourth image arranged in the fourth column. The display control apparatus according to claim 10, wherein the display control apparatus performs the display control apparatus. The display control means is configured to display the first image when all the first images arranged in the first column are displayed on the screen when the image is moved from right to left on the screen by the scroll. If a new column does not enter the right side of the column, an image to be displayed but displayed in the column one column left of the first column among the undisplayed images is displayed on the screen next. Perform the scroll display,
When the image is moved from the left to the right of the screen by the scroll, when all the third images arranged in the third column are displayed on the screen, the image is newly displayed on the left side of the third column. If no new column has entered, the scroll display is performed so that the image arranged in the column right one column from the third column among the images to be displayed but not displayed is next displayed on the screen. The display control device according to claim 10, wherein the display control device is a display control device. The display control means is configured to display the second image after displaying all the first images arranged in the first column on the screen when the image is moved from right to left on the screen by the scroll. If the second image arranged in a row is a display target, the scroll display is performed so that the undisplayed second image is displayed on the screen,
When the image is moved from the left to the right of the screen by the scrolling, the third image arranged in the fourth column even after all the third images arranged in the third column are displayed on the screen. The display according to any one of claims 10 to 13, wherein if the fourth image is a display target, the scroll display is performed so that the undisplayed fourth image is displayed on the screen. Control device. A determination unit for determining a direction in which the image displayed on the screen moves by scrolling;
The display control means performs the scroll display by changing a temporal order in which an undisplayed image is displayed on the screen based on the moving direction determined by the determination means. The display control apparatus according to claim 10, wherein the display control apparatus is a display control apparatus. Reading means for reading an image from an external storage medium;
Image processing means for executing image processing necessary for display on the image read by the reading means;
Expansion means for expanding the image processed by the image processing means into a buffer;
Storage means for copying the image developed by the development means from the buffer and storing it in a memory;
The display control apparatus according to claim 10, wherein the display control unit displays an image stored in the memory on the screen. When the moving direction of the image by scrolling is from the right to the left of the screen, among the images to be displayed but not displayed, the first image arranged in the first column is read by the reading unit. At least one of execution of image processing by the image processing unit, expansion to a buffer by the expansion unit, and storage in a memory by the storage unit precedes the second image arranged in the second column. To
When the moving direction of the image by scrolling is from the left to the right of the screen, among the images to be displayed but not displayed, the third image arranged in the third column is read by the reading unit. At least one of execution of image processing by the image processing unit, expansion to a buffer by the expansion unit, and storage in a memory by the storage unit precedes a fourth image arranged in the fourth column. The display control apparatus according to claim 16, wherein   The display control apparatus according to claim 16 or 17, wherein the image processing unit resizes the image read by the reading unit to a display size as the image processing. An operation means for receiving a user operation for inputting the scroll instruction;
The display control apparatus according to claim 1, wherein a speed at which the image is moved by the scrolling is variable according to the user operation. The operation means is a touch panel,
The display control apparatus according to claim 19, wherein the user operation is an operation of moving a position in contact with the touch panel in a direction in which an image moves by the scroll. Further comprising an imaging means for generating an image based on the optical image,
21. The display control apparatus according to claim 1, wherein images generated by the imaging unit are arranged in a matrix and displayed on the screen.   22. The display control device according to claim 1, wherein the display control device is a digital camera, a personal computer, a PDA, a mobile phone terminal, an image viewer, a printer device, a digital photo frame, a game machine, or a music player. The display control apparatus according to 1. An update step for updating a plurality of images to be displayed by scrolling a plurality of images arranged and displayed on the screen in a matrix;
Based on the moving direction of the image by the scroll, a display control step for controlling to perform a scroll display for displaying the undisplayed image among the plurality of images to be displayed on the screen in a different order depending on the moving direction,
In the display control step, when the moving direction of the image by the scroll is from the top to the bottom of the screen, at least one first image arranged in the first row among the images to be displayed but not displayed is displayed. Performing the scroll display so as to display on the screen before the second image arranged in the second row below the first row on the screen,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, at least one third image arranged in the third row among the images to be displayed but not displayed is displayed on the screen. A control method for a display control device, wherein the scroll display is performed so that the fourth image arranged in the fourth row above the third row is displayed on the screen before the fourth image. An update step for updating a plurality of images to be displayed by scrolling a plurality of images arranged and displayed on the screen in a matrix;
Based on the moving direction of the image by the scroll, a display control step for controlling to perform a scroll display for displaying the undisplayed image among the plurality of images to be displayed on the screen in a different order depending on the moving direction,
In the display control step, when the moving direction of the image by the scroll is from the right to the left of the screen, at least one first image arranged in the first row among the images to be displayed but not displayed is selected. , Performing the scroll display so as to be displayed on the screen before the second image arranged in the second column on the left side of the first column on the screen,
When the moving direction of the image by the scrolling is from the left to the right of the screen, at least one third image arranged in the third column among the images to be displayed but not displayed is displayed on the screen. A control method for a display control apparatus, wherein the scroll display is performed so that the fourth image arranged in the fourth column on the right side of the third column is displayed on the screen before the fourth image. On the computer,
An update step for updating a plurality of images to be displayed by scrolling a plurality of images arranged and displayed on the screen in a matrix;
Based on the moving direction of the image by scrolling, a display control step is executed to control to perform a scroll display in which an undisplayed image among the plurality of images to be displayed is displayed on the screen in a different order depending on the moving direction. ,
In the display control step, when the moving direction of the image by the scroll is from the top to the bottom of the screen, at least one first image arranged in the first row among the images to be displayed but not displayed is displayed. Performing the scroll display so as to display on the screen before the second image arranged in the second row below the first row on the screen,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, at least one third image arranged in the third row among the images to be displayed but not displayed is displayed on the screen. 3. The program according to claim 1, wherein the scroll display is performed so that the image is displayed on the screen before the fourth image arranged in the fourth row above the third row. When the moving direction of the image by the scroll is from the top to the bottom of the screen, the first row is a top row of the screen among a plurality of rows in which the display target image is arranged,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, the third row is a row at the lower end of the screen among a plurality of rows in which the image to be displayed is arranged. The program according to claim 25. In the display control step, when the moving direction of the image by the scroll is from the top to the bottom of the screen, the first image arranged in the first row is not displayed on the screen before the screen is displayed. When the image displayed on the screen further moves from the top to the bottom by the scroll, a new entry is made above the first row on the screen without displaying the first image arranged in the first row. The fifth image arranged in the fifth row is displayed on the screen before the first image arranged in the first row and the second image arranged in the second row. Do the scroll display as
When the moving direction of the image by scrolling is from the bottom to the top of the screen, the image displayed on the screen is displayed before any third image arranged in the third row is displayed on the screen. If the scroll further moves from bottom to top, the sixth row newly entered below the third row on the screen without displaying the third image arranged in the third row. The scroll display so that the sixth image arranged in the first row is displayed on the screen before the third image arranged in the third row and the fourth image arranged in the fourth row. The program according to claim 25 or 26, wherein: In the display control step, when all the first images arranged in the first row are displayed on the screen when the image is moved from the top to the bottom by the scroll, the first control is performed. If no new line has entered the upper side of the line, an image to be displayed but displayed in the line one line lower than the first line among the undisplayed images is displayed on the screen next. Perform the scroll display,
When the image is moved from the bottom to the top of the screen by the scroll, when all the third images arranged in the third row are displayed on the screen, the lower side of the third row is displayed. If no new line has entered, the scroll display is performed so that an image arranged in a line one line higher than the third line among the images to be displayed but not displayed is next displayed on the screen. The program according to any one of claims 25 to 27, wherein: In the display control step, when the image is moved from the top to the bottom of the screen by the scroll, the second image is displayed even after all the first images arranged in the first row are displayed on the screen. If the second image arranged in a row is a display target, the scroll display is performed so that the undisplayed second image is displayed on the screen,
When the image is moved from the bottom to the top of the screen by the scrolling, the third image arranged in the fourth row even after all the third images arranged in the third row are displayed on the screen. 29. The program according to claim 25, wherein if the fourth image is a display target, the scroll display is performed so that the undisplayed fourth image is displayed on the screen. . Further executing a determination step of determining a direction in which the image displayed on the screen moves by scrolling,
In the display control step, based on the determined moving direction, the scroll display is performed by changing a temporal order in which undisplayed images are displayed on the screen among the plurality of images to be displayed. The program according to any one of claims 25 to 29. A reading step of reading an image from an external storage medium;
An image processing step for performing image processing necessary for display on the read image;
An expansion step of expanding the image subjected to the image processing into a buffer;
A storage step of copying the expanded image from the buffer and storing it in a memory;
31. The program according to claim 25, wherein in the display control step, an image stored in the memory is displayed on the screen. In the case where the moving direction of the image by scrolling is from the top to the bottom of the screen, among the images to be displayed but not displayed, the first image arranged in the first row in the reading step At least one of reading, execution of image processing in the image processing step, expansion into a buffer in the expansion step, and storage in a memory in the storage step is arranged in the second row Before the image,
When the moving direction of the image by scrolling is from the bottom to the top of the screen, among the images to be displayed but not displayed, the third image arranged in the third row is read in the reading step. Read, execution of image processing in the image processing step, expansion into a buffer in the expansion step, and storage in a memory in the storage step are arranged in the fourth row. 32. The program according to claim 31, wherein the program is executed before an image.   The program according to claim 31 or 32, wherein in the image processing step, as the image processing, the image read in the reading step is resized to a display size. On the computer,
An update step for updating a plurality of images to be displayed by scrolling a plurality of images arranged and displayed on the screen in a matrix;
Based on the moving direction of the image by scrolling, a display control step is executed to control to perform a scroll display in which an undisplayed image among the plurality of images to be displayed is displayed on the screen in a different order depending on the moving direction. ,
In the display control step, when the moving direction of the image by the scroll is from the right to the left of the screen, at least one first image arranged in the first row among the images to be displayed but not displayed is selected. , Performing the scroll display so as to be displayed on the screen before the second image arranged in the second column on the left side of the first column on the screen,
When the moving direction of the image by the scrolling is from the left to the right of the screen, at least one third image arranged in the third column among the images to be displayed but not displayed is displayed on the screen. A program for performing the scroll display so as to be displayed on the screen prior to a fourth image arranged in a fourth column on the right side of the third column. When the moving direction of the image by scrolling is from the right to the left of the screen, the first column is a column at the right end of the screen among a plurality of columns in which the display target image is arranged,
When the moving direction of the image by scrolling is from the left to the right of the screen, the third column is a column at the left end of the screen among a plurality of columns in which the image to be displayed is arranged. The program according to claim 34. In the display control step, when the moving direction of the image by the scroll is from the right to the left of the screen, the first image arranged in the first row is not displayed on the screen before the screen is displayed. When the image displayed on the screen further moves from right to left by the scroll, a new entry is made to the right of the first column on the screen without displaying the first image arranged in the first column. The fifth image arranged in the fifth column is displayed on the screen before the first image arranged in the first column and the second image arranged in the second column. Do the scroll display as
When the moving direction of the image by the scroll is from the left to the right of the screen, the image displayed on the screen is displayed before any third image arranged in the third column is displayed on the screen. When the scroll further moves from left to right, the sixth image newly entered to the left of the third column on the screen is displayed without displaying the third image arranged in the third column. The scroll display is displayed so that the sixth image arranged is displayed on the screen before the third image arranged in the third column and the fourth image arranged in the fourth column. The program according to claim 34 or 35, wherein the program is performed. In the display control step, when all the first images arranged in the first column are displayed on the screen when the image is moved from right to left on the screen by the scroll, the first control is performed. If a new column does not enter the right side of the column, an image to be displayed but displayed in the column one column left of the first column among the undisplayed images is displayed on the screen next. Perform the scroll display,
When the image is moved from the left to the right of the screen by the scroll, when all the third images arranged in the third column are displayed on the screen, the image is newly displayed on the left side of the third column. If no new column has entered, the scroll display is performed so that the image arranged in the column right one column from the third column among the images to be displayed but not displayed is next displayed on the screen. 37. A program according to any one of claims 34 to 36. In the display control step, when the image is moved from the right to the left of the screen by the scroll, the second image is displayed even after all the first images arranged in the first row are displayed on the screen. If the second image arranged in a row is a display target, the scroll display is performed so that the undisplayed second image is displayed on the screen,
When the image is moved from the left to the right of the screen by the scrolling, the third image arranged in the fourth column even after all the third images arranged in the third column are displayed on the screen. The program according to any one of claims 34 to 37, wherein if the fourth image is a display target, the scroll display is performed so that the undisplayed fourth image is displayed on the screen. . Further executing a determination step of determining a direction in which the image displayed on the screen moves by scrolling,
In the display control step, based on the determined moving direction, the scroll display is performed by changing a temporal order in which undisplayed images are displayed on the screen among the plurality of images to be displayed. The program according to any one of claims 34 to 38. A reading step of reading an image from an external storage medium;
An image processing step for performing image processing necessary for display on the read image;
An expansion step of expanding the image subjected to the image processing into a buffer;
A storage step of copying the expanded image from the buffer and storing it in a memory;
40. The program according to claim 34, wherein in the display control step, an image stored in the memory is displayed on the screen. When the moving direction of the image by scrolling is from the right to the left of the screen, among the images to be displayed but not displayed, the first image arranged in the first column is read in the reading step. At least one of reading, execution of image processing in the image processing step, expansion into a buffer in the expansion step, and storage in a memory in the storage step is arranged in the second column Before the image,
When the moving direction of the image by scrolling is from the left to the right of the screen, among the images to be displayed but not displayed, a third image arranged in the third column is read in the reading step. At least one of reading, execution of image processing in the image processing step, expansion into a buffer in the expansion step, and storage in a memory in the storage step is arranged in the fourth column 41. The program according to claim 40, which is executed before an image.   42. The program according to claim 40, wherein in the image processing step, the read image is resized to a display size as the image processing. Further executing an operation step of accepting a user operation for inputting the scroll instruction;
43. The program according to claim 25, wherein a speed at which the image moves by the scrolling is variable according to the user operation. The operation step is performed according to an input from a touch panel,
44. The program according to claim 43, wherein the user operation is an operation of moving a position in contact with the touch panel in a direction in which an image moves by the scroll. An imaging step of generating an image based on the optical image;
The program according to any one of claims 25 to 44, wherein the images generated in the imaging step are arranged in a matrix and displayed on the screen.   46. The computer according to claim 25, wherein the computer is a digital camera, a personal computer, a PDA, a mobile phone terminal, an image viewer, a printer device, a digital photo frame, a game machine, or a music player. Program.   The recording medium which recorded the program of any one of Claim 25 thru | or 46 so that computer reading was possible.

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