JP4789513B2 - Information processing apparatus, information processing method, and program - Google Patents

Description

  The present invention relates to an information processing apparatus, an information processing method, and a program, for example, a technique suitable for use in a data prefetch timing technique.

  Conventionally, in List (item selection component), items can be added infinitely. When an item is added beyond the height of the List (item selection part), a scroll button (scroll bar) appears and it is possible to access items other than the currently visible item by scrolling.

  In the case of a scroll button, it is difficult to repeatedly scroll one page each time it is pressed in order to access hundreds of added items. It is possible to continue scrolling (referred to as continuous scrolling). Further, Patent Document 1 discloses a method that can quickly display valid data by adjusting a scroll amount and quickly scrolling a range designated in advance.

  If you have a large number of items, you may not be able to load everything into memory. Therefore, some means is taken to load the necessary items (including items shown to the user) from the hard disk into the memory, but in this case, if the part that has not been loaded is needed, it is actually displayed. If you load at a certain timing, the display will be delayed due to the waiting time.

  Although it is not an item display, as a method of prefetching when browsing the Internet, as in Patent Document 2, the reader's will is guessed from information such as the cursor position not moving, and the file is prefetched when free There is a method that enables prefetching according to the viewer's will by executing the above.

JP 20022444641 A JP 2002-251315 A

  In the conventional technology, when handling a large amount of data in a list (item selection part), it is difficult to read all into memory with devices with low memory resources. Yes. Also, if there are more items than the height of the List (item selection part), scroll to display the part that can not be displayed, but if you scroll more and more, all the parts loaded in memory will be displayed Then you have to load the next data. At this time, when loading from an external storage device such as a hard disk or communication from a network, there is a problem that the display is delayed by the loading time. In order to avoid this, a certain amount of data before and after the data currently loaded in the memory must be prefetched. It was useless to put data that might not be used in this way in memory.

  In addition, when searching for a certain item, etc., after stopping after continuous scrolling, if you have gone too far, scroll back little by little, or if you have not come to the desired place, move forward little by little. There was a problem that I didn't know which scrolling or scrolling depending on the scene.

  The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to improve the operability during scrolling.

The information processing apparatus of the present invention is an information processing apparatus to the first item number of scrolling the items to be displayed on the item list component to display items of multiple direction of the scroll instruction, on the item list component loaded from the data storage unit for storing the data items included, the data number of a given item of the item, and storing a memory, the first to be displayed on the item list component in accordance with the scroll instruction When item data for the number of items is stored in the memory, the item data for the first number of items is read from the memory, displayed, and the item list is displayed according to the scroll instruction. when said first item number of the item of data is not stored in said memory, from the data storage unit, the first of a number predetermined section than the number of items to be displayed on the part The data of several following items loaded into the memory, from the memory, the first entry read out several minutes of items of data, and a control means for displaying the item, the control means, the scroll When a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed due to the instruction being performed continuously for a predetermined time or more is set , the data of the predetermined number of items stored in the memory The data of the items not stored in the memory at the time of the setting so that the data of the display items at the time of the continuous mode setting and the data of the items in the direction of the scroll instruction at the time of the setting than the display items. The method of loading the data from the data storage unit and storing it in the memory, and in response to the end of the continuous mode, the scroll instruction when the continuous mode is set And a reverse item of data following said number of predetermined items, and loaded from the data storage unit, characterized in that to be stored in the memory.
It is another feature of the information processing apparatus of the present invention, an information processing apparatus to the first item number of scrolling the items to be displayed on the item list component to display items of multiple direction of the scroll instruction The item list is loaded from a data storage unit that stores data of items included in the item list component , a memory capable of storing a predetermined number of items of data, and the item list according to the scroll instruction. When the data for the first number of items to be displayed on the part is stored in the memory, the data for the first number of items is read from the memory, and the items are displayed. When data of items corresponding to the first number of items to be displayed on the item list component in response to the scroll instruction is not stored in the memory, the data storage unit stores the first data Many data of the predetermined number of items following items than the number of items loaded into the memory, from the memory, reads the data of the first item number of the item, and a control means for displaying the item The control means stores in the memory when a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed due to the scroll instruction being performed at an interval earlier than a predetermined interval is set. The data of the predetermined number of items is the display item data at the time of the continuous mode setting and the data of the item in the direction of the scroll instruction at the time of setting rather than the display item. The data of items not stored in the memory is loaded from the data storage unit and stored in the memory, and in response to the end of the continuous mode, the continuous mode The data of the scroll instruction direction opposite the direction of the items of the setting time of less than or equal to the number of the predetermined item, and loaded from the data storage unit and said to be stored in the memory.
According to still another feature of the information processing apparatus of the present invention, the first item in accordance with items to be displayed on the item list component to display items of multiple, the instructions on the scroll button included in the scroll bar An information processing apparatus that scrolls several minutes, loaded from a data storage unit that stores data of items included on the item list component , a memory capable of storing a predetermined number of items of data, and When data of items corresponding to the number of first items to be displayed on the item list component in response to an instruction of a scroll button is stored in the memory, items of items corresponding to the number of first items from the memory are stored. It reads the data, to display the items, the first item number of the item of data is the memory to be displayed on the item list component in accordance with an instruction of the scroll button If not憶, from said data storage unit, to load the data of the first item number the predetermined number of items following items than the number in the memory, from the memory, the first fraction items reading an item of data, and a control means for displaying the item, said control means, when the continuous mode by knob included in the scroll bar is dragged is set, the to be stored in the memory The data of the predetermined number of items is stored in the memory at the time of setting so that the data of the display item at the time of the continuous mode setting and the data of the item of the drag direction at the time of the setting rather than the display item. The data of the items that have not been loaded are loaded from the data storage unit and stored in the memory, and before the continuous mode is set according to the end of the continuous mode. The data direction opposite the direction of entry of an instruction direction of the drag follows said number of predetermined items, and loaded from the data storage unit, characterized in that to be stored in the memory.
An information processing method of the present invention is an information processing method apparatus performs the first item number of the scroll in the direction of the scroll instruction items to be displayed on the item list component to display items of multiple, said scroll instruction If the data for the first number of items to be displayed on the item list component in response to is stored in a memory capable of storing data for a predetermined number of items, the first data is stored in the memory from the memory. When data of items corresponding to the number of items is read, displayed, and displayed on the item list component in response to the scroll instruction, the data corresponding to the number of items of the first item is not stored in the memory loads the data of the item list item the first item number the predetermined number of items following items than the number from the data storage unit that stores data included in the component in the memory, the From the memory, there is a control process for reading out the data of the first number of items and displaying the items, and in the control process, the scroll instruction is continuously performed for a predetermined time or more. When a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed is set , the item data of the predetermined number of items stored in the memory includes display item data at the time of the continuous mode setting, The data of the item not stored in the memory at the time of the setting is loaded from the data storage unit and stored in the memory so that the data of the item in the direction of the scroll instruction at the time of the setting is more than the display item. In response to the end of the continuous mode, data of items in the direction opposite to the direction of the scroll instruction when the continuous mode is set is equal to or less than the predetermined number of items. Loading from said data storage unit, characterized in that to be stored in the memory.
Program of the present invention is a program to be executed by a computer to the first item number of the scroll in the direction of the scroll instruction items to be displayed on the item list component to display items of multiple, said scroll instruction Accordingly, when the data of the first item number displayed on the item list component is stored in a memory capable of storing a predetermined number of items of data , the first item from the memory is stored. When items of data for several items are read out, displayed for the items, and displayed on the item list component in response to the scroll instruction, the data for items of the first number of items are not stored in the memory , from said data storage unit for storing the data items included in the item list component, the first item the data of the predetermined number of items following item more notes than the number And reading the data for the first number of items from the memory and causing the computer to execute a control process for displaying the items. In the control process, the scroll instruction continues for a predetermined time or more. When the continuous mode in which scrolling in the direction of the scroll instruction is continuously performed is set , the data of the predetermined number of items stored in the memory is stored when the continuous mode is set. The data storage unit loads the item data not stored in the memory at the time of the setting so that the display item data and the data of the item in the direction of the scroll instruction at the time of the setting are more than the display item. And in the opposite direction to the direction of the scroll instruction when the continuous mode is set according to the end of the continuous mode. The item of data following said number of predetermined items, and loaded from the data storage unit, characterized in that to be stored in the memory.

  According to the present invention, as described above, according to the method of the present invention, when a large number of items are displayed on an item display component such as a list, continuous scrolling is turned on even in a system with little memory. Detecting this and using this as a trigger to prefetch the next data in the direction of continuous scrolling enables smooth scrolling and comfortable item browsing, improving user operability. effective.

  Similarly, when displaying a large number of items in an item display component such as a list, even in a system with little memory, it is detected that the user is pressing the scroll button quickly and scrolling pages one after another. By using this as a trigger and prefetching data ahead in the direction of scrolling, smooth scrolling is possible, comfortable item browsing is possible, and the operability of the user is improved.

  In addition, when the user presses the scroll button for a long time to find an item to select from a large number of items and continuously scrolls and stops, when the page is displayed, a certain amount before and after the stopped page is displayed. By simultaneously loading these pages, the page is displayed immediately when searching for an item by slowly moving between the previous and next pages in detail, thereby enabling the comfortable item browsing.

(First embodiment)
Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a block diagram showing a configuration according to the present embodiment.
As shown in FIG. 1, the apparatus used in the present embodiment includes a storage unit 1, a calculation unit 2, a display unit 3, an input unit 4, an external storage unit 5, and a network unit 6.

  The storage unit 11 further includes a data unit 10 and a program unit 11, and the data unit 10 further includes a display data holding unit 101 and a prefetch data holding unit 102. The calculation unit 2 further includes a load control unit 20, a data acquisition unit 21, a continuous scroll determination unit 22, a scroll control unit 23, and a display control unit 24.

Based on these configurations, the flow in the present embodiment will be described with reference to the flowchart of FIG.
First, in step S100, the list is loaded into the memory for one page (X page) from the page to be displayed first (in the display data holding unit 10 of the storage unit 1 in FIG. 1). The load source is from a place where item data is stored, such as through the hard disk of the external storage unit 5 in FIG. 1 or the network 6 in FIG.

  Next, in step S101, the page to be displayed is displayed on the display device of the display unit 3 in FIG. Next, in step S102, it is determined whether or not the down scroll button has been pressed by an input from the input unit 4. If the down scroll button has been pressed, the process moves to step S103, and it is determined whether or not it is the last page.

  If it is the last page, the process returns to step S102, and if it is not the last page, the process proceeds to step S104. In step S104, it is determined whether or not the continuous scroll is turned on by the long press (by the continuous scroll determination unit 22 in FIG. 1). Usually, when the scroll button for a certain number of seconds is kept pressed, the continuous scrolling is turned on. When it is less than a certain number of seconds, it is determined that the button has been normally pressed, and scrolling is performed page by page.

  Here, if it is determined that the continuous scroll is turned on, the process proceeds to step S105, and the load of the next certain page (X page) is loaded by the instruction of the load control unit 20 of FIG. 21. (However, if the same part has already been loaded, the loading is not started twice.) The loading result is held in the prefetch data holding unit 102 in FIG. From processing to saving, it is processed in parallel with other processing). Then, the process proceeds to step S106.

  If it is determined in step S104 that the continuous scroll is not turned on, the process proceeds to step S106. In step S106, the page is scrolled down by one page (by the scroll control unit 23 in FIG. 1), and the process proceeds to step S107. In step S107, it is determined whether it is the last page. If it is the last page, the process returns to step S102, and if it is not the last page, the process proceeds to step S108.

  In step S108, it is determined whether the list should be switched. This can be determined by whether or not the current page has reached X pages among the loaded pages. If the list has to be switched, the process proceeds to step S109, and if it is not necessary to switch yet, the process proceeds to step S113. In step S109, it is determined whether there is pre-read data. If it is determined in step S105 that X pages have already been loaded and pre-read, the process proceeds to step S111. If it is not pre-read, the process proceeds to step S110, and the next certain page (X page) is loaded into the pre-read data holding unit 102 in FIG.

  The process proceeds to step S111, where the list previously read in step S105 or the list loaded in step S110 is replaced with the list already loaded in the memory used for display (in the prefetch data holding unit 102). The contents are transferred to the display data holding unit 101). In step S112, the first page in the replaced list is displayed (displayed on the display unit 3 by the display control unit 24 in FIG. 1).

  The process proceeds to step S113, where it is determined whether continuous scrolling is in progress. If continuous scrolling is in progress, the process proceeds to step S114, and if not in continuous scrolling, the process returns to step S102. In step S114, it is determined whether or not the scroll button has been released. If it has been released, it means that the continuous scrolling has been turned off, so that the process returns to step S102 and the processes in steps S102 to S129 are repeated. If not, the process proceeds to step S115. In step S115, it is a process for determining how long the next scrolling is performed, and is determined by sleeping for a certain time.

  The less this time, the faster the scroll. If this process is changed to a process that counts how many times the scroll is scrolled during continuous scrolling and the sleep time is shortened at a certain number of times, it becomes faster and faster if the long press time is long. It is possible to realize accelerated scrolling that comes to scroll.

  After step S115 is completed, the process returns to step S106, and the processes of steps S106 to S115 and S102 are repeated to continue the continuous scrolling. If the down scroll button is not pressed in step S102, the process proceeds to step S116. In step S116, it is determined whether or not the up scroll button is pressed by an input from the input unit 4 in FIG. 1. If the up scroll button is not pressed, the process returns to step S102.

  If the up scroll button has been pressed, the process moves to step S117, and it is determined whether or not it is the first page (in the entire list). If it is the first page, it cannot be scrolled any further, so the process returns to step S102, and if it is not the first page, the process proceeds to step S118. In step S118, it is determined by the continuous scroll determination unit in FIG. 1 whether or not the continuous scroll is turned on by long press. Normally, the continuous scroll is turned on when the button is kept pressed for a certain number of seconds, and if it is less than a certain number of seconds, it is determined that the scroll button is normally pressed.

  If it is determined that continuous scrolling has been turned on, the process proceeds to step S119, and loading of a previous page (X pages) is started (if the same portion has already been loaded). The load is not started twice), and the load is processed in parallel with other processes by the load control unit in FIG. 1, and the result is held in the prefetch data holding unit 102 in FIG. Move. If it is determined in step S118 that the continuous scroll is not turned on, the process proceeds to step S120. In step S120, the scroll control unit in FIG. 1 scrolls the page up one page, and the process proceeds to step S121.

  In step S121, it is determined whether it is the first page. If it is the first page, the process returns to step S102, and if it is not the first page, the process proceeds to step S122. In step S122, it is determined whether the list should be switched.

  This can be determined by whether or not the current page has reached the first page among the loaded pages. If the list has to be switched, the process proceeds to step S123, and if it is not necessary to switch yet, the process proceeds to step S127. In step S123, it is determined whether there is pre-read data. If it is determined in step S119 that X pages have already been loaded and pre-read, the process proceeds to step S125. If it is not pre-read, the process proceeds to step S124, and a previous page (X page) is loaded into the pre-read data holding unit 102 in FIG.

  The process moves to step S125, and the list is pre-read in step S119 or is replaced with the one loaded in step S124 (the contents of the pre-read data holding unit 102 are transferred to the display data holding unit 101). In step S126, the last page in the replaced list is displayed (displayed on the display unit 3 by the display control unit 24 in FIG. 1).

  The process moves to step S127, and it is determined whether continuous scrolling is in progress. If continuous scrolling is in progress, the process moves to step S128, and if not in continuous scrolling, the process returns to step S102. In step S128, it is determined whether or not the scroll button has been released. If it has been released, it means that the continuous scroll has been turned off, so that the process returns to step S102, and the processes in steps S102 to S129 are repeated. If not, the process moves to step S129. In step S129, the user sleeps for a certain period of time, returns to step S120, and repeats the processes of steps S120 to S129 in order to continue the continuous scrolling.

  Now, suppose that the amount of memory used in the embedded device is limited, and the memory can have only two sets of 35 arrays in the number of items in the list (for a total of 70 items). One set of sequences is used for look-ahead. Assuming that the number of display items in the list is now 7, this corresponds to 5 pages in the 35 array (the X page corresponding to the certain page is assumed to be 5 pages here).

  First, the system loads data for five pages in the list into a memory from a disk or a network, and displays the first page (see an actual GUI component example in FIG. 3). Normally, when the down scroll button is pressed in this state, the page is scrolled one after another and displayed one page at a time from the data (array) in the memory. Although it is loaded into the memory and displayed from over the network or the like, this loading takes time, and scrolling from page 5 to page 6 may be awaited. For example, in order to inform the user of what the user is waiting for this waiting time and not to make it uncomfortable, there is a case where a process of displaying a “Loading ...” panel indicating that the loading is in progress may be necessary (see FIG. 4).

  Therefore, when the 5th page is reached, the next 5 pages (6 to 10 pages) are prefetched. In this case, the page 6 is scrolled up and returned to the 4th page without going to the 6th page. In some cases, pre-reading may end in vain. Also, if you scroll to the fifth page and immediately try to scroll the sixth page, the pre-read load may not be in time.

  Therefore, in the method of the present invention, when it is detected that continuous scrolling that automatically scrolls one after another by turning on the scroll button is turned on, prefetching is performed for the next five pages, thereby prefetching at an early stage. Perform loading.

  This means that there is a high possibility of passing through the switching location from page 5 to page 6 during continuous scrolling (during continuous scrolling, scrolling is only possible in the current scrolling direction and normal scrolling is not possible. So that it doesn't return in the opposite direction).

  In FIG. 3, 5 pages are initially loaded (the gray thin portion in FIG. 3), the data is stored in the first set of arrays, and the first page is displayed on the screen as the first page to be displayed. In this example, when continuous scrolling is turned on at this point, 5 pages of 6 to 10 pages are pre-read (the dark gray part in FIG. 3), and the other set of pre-read arrays is used. Store the data. When you actually have to display the sixth page, you can simply switch to the pre-reading array that you want to refer to when you display it on the screen in memory. It is possible to display the sixth page smoothly (no need to process the loading panel). By switching the array used as the display buffer before switching at this time as the prefetching array this time, the memory may use only two sets of arrays. .

  In this way, in this embodiment, when displaying a large number of items in an item display component such as a list, even in a system with little memory, it is detected that continuous scrolling is turned on, and this is used as a trigger. Smooth scrolling is enabled by prefetching the next data in the direction in which continuous scrolling is performed.

(Second Embodiment)
In the first embodiment, prefetching is started when continuous scrolling is turned on by long press, but in this embodiment, it is detected that the scroll button is pushed at a fast interval, and this is used as a trigger for prefetching. To start. Other processes are the same as those in the first embodiment. Details will be described with reference to the flowchart of FIG.

  In steps S100 to S101, the same processing as in the first embodiment is performed, and the processing moves to processing 200. In process 200, a variable for holding the time when the scroll button is pressed is initialized. Set the two variables tsD and teD for the down scroll button to 0 (tsD = teD = 0).

  The two variables tsU and teU for the up scroll button are also set to 0 (tsU = teU = 0). Next, the process proceeds to step S102. Steps S102 to S103 are the same processes as those in the first embodiment. Here, if it is not the last page in step S103, the process proceeds to step S104 in the first embodiment, but in the present embodiment, steps S201 to S204 are performed instead of step S104 in FIG. If it is not the last page in step S103, the process moves to step S201, and the current time (unit: milliseconds (ms)) is substituted for teD.

The current time is always a positive value (and at least a value greater than 1000 ms). Usually, the difference from midnight on January 1, 1970 is obtained in milliseconds (ms). Then, the process proceeds to step S202, and it is determined whether or not the value obtained by subtracting tsD from teD is equal to or less than a predetermined value (CT).
teD-tsD ≤ CT.

  Here, the purpose is to determine that the button is pressed one after another when the time (teD-tsD) from when the user presses the down scroll button to the next press of the down scroll button is short. For this reason, the predetermined value (CT) may be determined to be, for example, 500 ms of 1 second or less, or may be determined by taking statistics of operations in which the user turns pages one after another.

  If (TeD-tsD) is equal to or less than CT, the process proceeds to step S203, tsD is set to 0, and then the process proceeds to step S105 to perform prefetching processing. Steps S105 to S111 are the same as those in the first embodiment. After step S111 is completed, the process proceeds to step S112. In step S112, the process moves to step S113 in the first embodiment, but in the present embodiment, after the first page of the replaced list is displayed, the process returns to step S102.

  If the value of (TeD-tsD) is larger than CT in step S202, the process moves to step S204, (teD) is substituted for (tsD (tsD = teD), and the process moves to step S106 without performing prefetching. Subsequent steps S106 to S112 are the same as in the first embodiment (step S112 is slightly different from the first embodiment in that it does not move to step S113 but moves to step S102 as described above. Wrong).

Considering the first scene, since tsD = 0 in step S200 and teD becomes the current time (eg, 1103692777281 ms) in step S201, assuming that CT is 500 ms in step S202, teD-tsD = 1103692777281 -0 = 1103692777281 ms,
1103692777281> 500,
Since the value becomes larger than CT, the process proceeds to step S204 and 1103692777281 is substituted for tsD. Next, if the user quickly presses down scroll again, teD becomes the current time in step S201 (for example, 1103692777581 ms if it is 300 ms after the previous press), so if CT is set to 500 ms in step S202, teD-tsD = 1103692777581-1103692777281 = 300 ms,
300 <500,
Since the value is smaller than CT, the prefetch processing in steps S203 and S105 to S112 is performed.

  If the down scroll button is not pressed in step S102, the process proceeds to step S116. Steps S116 and S117 perform the same processing as in the first embodiment. If it is not the first page in step S117, the process moves to step S118 in the first embodiment. Instead of step S118 of step 2, steps S205 to S208 are performed. Proceeding to step S205, in step S205, the current time (unit: milliseconds (ms)) is substituted into teU.

In step S206, it is determined whether or not the value obtained by subtracting tsU from teU is smaller than a predetermined value (referred to as CT).
teU-tsU ≤ CT.

  Here, the purpose is to determine that the button is pressed one after another when the time (teU-tsU) from when the user presses the up scroll button to when the user presses the up scroll button is short. . If (TeU-tsU) is equal to or less than CT, the process proceeds to step S207, tsU is set to 0, and then the process proceeds to step S119 to perform prefetch processing.

  Steps S119 to S125 are the same as those in the first embodiment. When step S125 is completed, the process proceeds to step S126. After that, in the first embodiment, the process proceeds to step S127. In the present embodiment, after the last page of the replaced list is displayed, the process proceeds to step S102. Return.

  In step S206, when the value of TeU-tsU is larger than CT, the process proceeds to step S208, teU is substituted for tsU (tsU = teU), and the process proceeds to step S120 without performing prefetching. Subsequent steps S120 to S126 are the same as in the first embodiment (step S126 is slightly different from the first embodiment in that it does not move to step S127 but moves to step S102 as described above. Wrong).

  In the present embodiment, it is determined that the user presses the scroll button one after another by only one time from the time the scroll button is pressed to the next time it is pressed in step S202 or step S206 in FIG. By continuously checking the time until the next pressing is performed several times and if all of them are equal to or less than the CT value, it is determined that the buttons are pressed one after another, so that it can be determined that the pressing is performed one after another more accurately.

  As described above, in this embodiment, when displaying a large number of items in an item display component such as a list, even in a system with a small amount of memory, the user quickly presses the scroll button to scroll the pages more and more. Detecting this, and using this as a trigger, prefetching the next data in the direction of scrolling enables smooth scrolling.

(Third embodiment)
According to this embodiment, when searching for an item to be selected from a large number of items, the user performs long scrolling of the scroll button, performs continuous scrolling, and, after reaching a certain page, slowly moves back and forth in detail. Since there are many cases of moving to search for items, the scroll display at this time can be improved.

Details will be described with reference to the flowchart of FIG.
First, in step S300, it is determined whether continuous scrolling has been performed and stopped. If it is during continuous scrolling or normal scrolling, the process ends. If it is the time when continuous scrolling is stopped, the process proceeds to step S301. In step S301, the number P of stopped pages is obtained by performing continuous scrolling. The process proceeds to step S302, where a predetermined read page amount is set as CP, and the process proceeds to step S303, in which a value CP / 2 which is half of CP is substituted for variable A (A = CP / 2, and the decimal part is rounded down).

  The process proceeds to step S304. If the number of stopped pages P minus the variable A (P-A) is 1 or less (P-A ≦ 1), the process proceeds to step S305, and if larger, the process proceeds to step S306. In step S305, 1 which is the minimum number of pages is substituted for variable B, and the process proceeds to step S307.

  In step S306, (P-A) is substituted for variable B, and the process proceeds to step S307. In step S307, the maximum page number MP is obtained. The process proceeds to step S308. If the number of stopped pages P plus the variable A (P + A) is equal to or less than the maximum page number MP (P + A ≦ MP), the process proceeds to step S309, and if larger, the process proceeds to step S310.

  In step S309, (P + A-1) is substituted for variable C, and the flow proceeds to step S311. In step S310, MP is substituted for variable C in the sense that if the maximum page is exceeded when (P + A) exceeds the maximum page, the process proceeds to step S311. In step S311, pages B to C are loaded, and the process proceeds to step S312. In step S312, the Pth page is displayed in the list, and the process ends.

  Now, assuming that there is a list in which two items are displayed per page, assuming that the predetermined read page amount CP is 10 pages, the variable A = CP / 2 is 5 pages.

  As shown in FIG. 7, when this embodiment is applied to a list of 40 items with a maximum of 20 pages (MP = 20) and page P stopped after continuous scrolling is 7 pages, variable B is PA = 7-5 = 2 page is greater than 1, so B = PA = 7-5 = 2 page (applying step S306 in FIG. 6), variable C is P + A-1 = 7 + 5-1 Since page 11 is MP = 20 pages or less, C = P + A-1 = 7 + 5-1 = 11 pages (applying step S309 in FIG. 6), so 2 pages to 11 pages are loaded. (Step S311 in FIG. 6 is applied), page 7 is displayed (step S312 in FIG. 6).

  The portion shown in gray in FIG. 7 is the read item. Here, even if the user feels that he / she has gone too far by continuous scrolling, even if he / she scrolls up and returns, it is possible to display immediately since pages 6 to 2 have already been loaded.

  Conversely, the user stops continuous scrolling, but feels that he has not yet reached the desired location, and even if he scrolls down and makes fine adjustments, pages 7 to 11 are already loaded, so they are still displayed immediately. Is possible.

  Similarly, assuming that there is a list in which two items are displayed per page, assuming that the predetermined read page amount CP is 10 pages, the variable A = CP / 2 is 5 pages. As shown in FIG. 8, when this embodiment is applied to a list of 40 items with a maximum of 20 pages (MP = 20) and the page P stopped after continuous scrolling is 4 pages, the variable B Because PA = 4-5 = -1 page is smaller than 1, B = 1 page (applying step S305 in Fig. 6), variable C is P + A-1 = 4 + 5-1 = 8 page Since MP = 20 pages or less, C = P + A-1 = 4 + 5-1 = 8 pages (step S309 in FIG. 6 is applied), so 8 pages are loaded from page 1 (FIG. 6). Application of step S311) 4 pages are displayed (step S312 in FIG. 6). The portion shown in gray in FIG. 8 is the read item.

  In this case, since CP is 10 pages, CP-C = 10-8 = 2 pages are left in the buffer, so if variable B is 1 and CP-C is greater than 0, C = CP. Similarly, assuming that there is a list in which two items are displayed per page, assuming that the predetermined read page amount CP is 10 pages, the variable A = CP / 2 is 5 pages.

  As shown in FIG. 9, when this embodiment is applied to a list of 40 items with a maximum of 20 pages (MP = 20) and page P stopped after continuous scrolling is 17 pages, variable B is PA = 17-5 = 12 page is larger than 1, so B = PA = 17-5 = 12 page (applying step S306 in FIG. 6), variable C is P + A-1 = 17 + 5-1 Since page 21 is larger than page MP = 20, C = MP = 20 pages (applying step S310 in FIG. 6), so page 20 is loaded from page 12 (applying step S311 in FIG. 6), page 17 Is displayed (step S312 in FIG. 6).

The portion shown in gray in FIG. 8 is the read item. In this case, because CP is 10 pages, CP-(C-B +1) = 10-(20-12 +1) = 1 page is left in the buffer, so variable C is MP In this case, when B is larger than MP-CP, B = MP-CP + 1 may be set.
According to this embodiment, the user presses the scroll button for a long time to find an item to be selected from a large number of items, performs continuous scrolling, and stops when the page is displayed when continuous scrolling stops. A page for a certain part before and after the page (in the example above, the CP / 2 page before and after) is loaded at the same time, so when you move around the page slowly and look for items in detail, the page is displayed immediately The comfortable item browsing becomes possible.

  In the first to third embodiments, the up and down scroll buttons have been described. However, the present invention can be applied even if the left and right scroll buttons are replaced. In addition, when a scroll bar is used, the present invention can be applied if continuous scrolling is performed by dragging the knob of the scroll bar with a mouse.

  In addition, the first to third embodiments have been described assuming that the number of displayed items is one page and the scroll is performed by one page each time the scroll button is pressed. There is also a list that scrolls one item at a time each time it is pressed. In this case, the present invention can be applied if the first to third embodiments are considered by determining that one item is one page.

  Moreover, in this embodiment, it can be applied to all cases where the item selection list part has a scroll bar or scroll button. In the first to third embodiments, the list part is taken as an example, but the list is limited to the list. However, if a large number of items are added to a component that can be selected in a pull-down format called Choice as shown in FIG. 10, a scroll button is added, so that the present invention can be applied (in FIG. 10, It shows how Choice is selected and pulled down.) The present invention can be similarly applied to a pop-up menu that is a component of only other pull-down parts of Choice.

(Another embodiment according to the present invention)
Each means constituting the data prefetching device and data processing device, and each step of the data prefetching method and data processing method in the embodiment of the present invention described above, operates a program stored in a RAM or ROM of a computer. Can be realized. This program and a computer-readable recording medium recording the program are included in the present invention.

  Further, the present invention can be implemented as, for example, a system, apparatus, method, program, or recording medium, and can be applied to a system composed of a plurality of devices. Moreover, you may apply to the apparatus which consists of one apparatus.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 2, 5, and 6) that realizes the functions of the above-described embodiments is directly or remotely transmitted to a system or apparatus. And the case where the computer of the system or apparatus reads out and executes the supplied program code.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, and the like.

  As a recording medium for supplying the program, for example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program itself of the present invention or a compressed file including an automatic installation function is downloaded from the homepage to a recording medium such as a hard disk. Can also be supplied.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  In addition, the program of the present invention is encrypted, stored on a recording medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer based on the instructions of the program is used for the actual processing. The functions of the above-described embodiment can be realized by performing some or all of the processes.

  Furthermore, after the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion board or The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block block diagram in 1st Embodiment. It is a flowchart during the scroll in 1st Embodiment. It is a figure which shows the example of actual GUI components in 1st Embodiment. It is a figure which displays during loading which is the conventional problem. It is a flowchart in the middle of scrolling in 2nd Embodiment. It is a flowchart during the scroll in 3rd Embodiment. It is a figure explaining the example of a display in 3rd Embodiment. It is a figure explaining the example of a display in 3rd Embodiment. It is a figure explaining the example of a display in 3rd Embodiment. It is a figure of the summary of the summary of 1st-3rd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Memory | storage part 2 Calculation part 3 Display part 4 Input part 5 External storage part 6 Network part 10 Data part 11 Program part 20 Load control part 21 Data acquisition part 22 Continuous scroll determination part 23 Scroll control part 24 Display control part 101 Display data Holding unit 102 Prefetch data holding unit

Claims (5)

An information processing apparatus for the first item number of the scroll in the direction of the scroll instruction items to be displayed in the item list on the part to display items of multiple,
Loaded from a data storage unit that stores data of items included on the item list component , a memory capable of storing the data of the items for a predetermined number of items , and
In the case where data of items corresponding to the number of first items to be displayed on the item list component in response to the scroll instruction is stored in the memory, data of items corresponding to the number of first items from the memory. If the data for the first number of items to be displayed on the item list component in response to the scroll instruction is not stored in the memory, the data storage unit , Loading data of items greater than the first number of items and less than or equal to the predetermined number of items into the memory, reading data of the items for the first number of items from the memory, and displaying the items Means,
The control means includes
When a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed by setting the scroll instruction continuously for a predetermined time or more is set, the predetermined number of items stored in the memory Of the items not stored in the memory at the time of the setting so that the data of the display item at the time of the continuous mode setting and the data of the item of the scroll instruction direction at the time of the setting rather than the display item. Data is loaded from the data storage unit and stored in the memory, and data of items in the direction opposite to the direction of the scroll instruction when the continuous mode is set is stored in the memory according to the end of the continuous mode. Hereinafter, an information processing apparatus that is loaded from the data storage unit and stored in the memory . An information processing apparatus for the first item number of the scroll in the direction of the scroll instruction items to be displayed in the item list on the part to display items of multiple,
Loaded from a data storage unit that stores data of items included on the item list component , a memory capable of storing the data of the items for a predetermined number of items , and
In the case where data of items corresponding to the number of first items to be displayed on the item list component in response to the scroll instruction is stored in the memory, data of items corresponding to the number of first items from the memory. If the data for the first number of items to be displayed on the item list component in response to the scroll instruction is not stored in the memory, the data storage unit , Loading data of items greater than the first number of items and less than or equal to the predetermined number of items into the memory, reading data of the items for the first number of items from the memory, and displaying the items Means,
The control means includes
When a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed due to the scroll instruction being performed at an interval earlier than the predetermined interval, the predetermined number of items stored in the memory is set . Items that are not stored in the memory at the time of the setting so that the item data becomes the data of the display item at the time of the continuous mode setting and the data of the item of the scroll instruction direction at the time of the setting rather than the display item. Is loaded from the data storage unit and stored in the memory, and in response to the end of the continuous mode, the data of the item in the direction opposite to the direction of the scroll instruction when the continuous mode is set is stored in the predetermined item. An information processing apparatus that is loaded from the data storage unit and stored in the memory . The items to be displayed in the item list on the part to display items of multiple, an information processing apparatus for the first item number of scroll according to the instruction of the scroll button included in the scroll bar,
Loaded from a data storage unit that stores data of items included on the item list component , a memory capable of storing the data of the items for a predetermined number of items , and
When data of items corresponding to the number of first items to be displayed on the item list component according to the instruction of the scroll button is stored in the memory, items corresponding to the number of first items from the memory are stored. When the data for the first number of items to be displayed on the item list component according to the instruction of the scroll button is not stored in the memory, the item is displayed. From the data storage unit, the data of the items that are greater than the first item number and less than or equal to the predetermined item number are loaded into the memory, and the item data for the first item number is read from the memory, and the item Control means for displaying
The control means includes
When the continuous mode is set by dragging the knob included in the scroll bar , the data of the predetermined number of items to be stored in the memory includes the display item data when the continuous mode is set, and the display The data of the item not stored in the memory at the time of the setting is loaded from the data storage unit and stored in the memory so that the data of the item in the drag direction at the time of the setting is set to be stored in the memory. In response to the end of the mode, the data of the item in the direction opposite to the direction of the drag direction when the continuous mode is set is loaded from the data storage unit below the predetermined number of items and stored in the memory. An information processing apparatus characterized by the above. An information processing method of device performs the first item number of the scroll in the direction of the scroll instruction items to be displayed in the item list on the part to display items of multiple,
When the data for the first number of items to be displayed on the item list component in response to the scroll instruction is stored in a memory capable of storing data for a predetermined number of items, the data from the memory Data of items corresponding to the number of first items is read out, the items are displayed, and data of items corresponding to the number of first items to be displayed on the item list component in response to the scroll instruction is stored in the memory. If not, the data storage unit that stores the data of the items included in the item list component is loaded with the data of the items that is greater than the first item number and less than or equal to the predetermined item number to the memory, and from the memory , Including a control step of reading out data of items corresponding to the first number of items and displaying the items,
In the control step,
When a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed by setting the scroll instruction continuously for a predetermined time or more is set, the predetermined number of items stored in the memory Of the items not stored in the memory at the time of the setting so that the data of the display item at the time of the continuous mode setting and the data of the item of the scroll instruction direction at the time of the setting rather than the display item. Data is loaded from the data storage unit and stored in the memory, and data of items in the direction opposite to the direction of the scroll instruction when the continuous mode is set is stored in the memory according to the end of the continuous mode. Hereinafter, an information processing method , wherein the information is loaded from the data storage unit and stored in the memory . A program to be executed by a computer to the first item number of scrolling the items to be displayed in the item list on the part to display items of multiple direction of the scroll instruction,
When the data for the first number of items to be displayed on the item list component in response to the scroll instruction is stored in a memory capable of storing data for a predetermined number of items, the data from the memory Data of items corresponding to the number of first items is read out, the items are displayed, and data of items corresponding to the number of first items to be displayed on the item list component in response to the scroll instruction is stored in the memory. If not, from the data storage unit that stores the data of the items included in the item list component, load the data of the items that is greater than the first item number and less than or equal to the predetermined item number into the memory, From the first item number of items of data is read, the computer to execute a control process to display the items,
In the control step,
When a continuous mode in which scrolling in the direction of the scroll instruction is continuously performed by setting the scroll instruction continuously for a predetermined time or more is set, the predetermined number of items stored in the memory Of the items not stored in the memory at the time of the setting so that the data of the display item at the time of the continuous mode setting and the data of the item of the scroll instruction direction at the time of the setting rather than the display item. Data is loaded from the data storage unit and stored in the memory, and data of items in the direction opposite to the direction of the scroll instruction when the continuous mode is set is stored in the memory according to the end of the continuous mode. Hereinafter, a program loaded from the data storage unit and stored in the memory .

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