DISPLAY CONTROL APPARATUS AND DISPLAY CONTROL METHOD

• US 20110154189A1
• Filed: 12/09/2010
• Published: 06/23/2011
• Est. Priority Date: 12/21/2009
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Yano, Tomohiro
• Granted Patent: US 9,148,536 B2
• Time in Patent Office: Days
• US Class Current: 715/251
• CPC Class Codes: H04N 1/00442 Simultaneous viewing of a plurality of images, e.g. using a mosaic display arrangement of thumbnails
• CPC Class Codes: H04N 1/00453 arranged in a two dimensional array
• CPC Class Codes: H04N 1/00458 Sequential viewing of a plurality of images, e.g. browsing or scrolling
• CPC Class Codes: H04N 1/2112 using still video cameras
• CPC Class Codes: H04N 1/32358 using picture signal storage, e.g. at transmitter H04N1/17 takes precedence
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 2201/3288 Storage of two or more complete document pages or image frames
• CPC Class Codes: H04N 2201/3298 Checking or indicating the storage space

Abstract

A display control apparatus that controls to display images so that a plurality of images are assigned to each page changes display from a page being displayed to another page according to a user'"'"'s operation. Here, the display control apparatus performs pre-reading in which images to be displayed in pages other than the page being displayed are read from a device storing the images and stored in a temporary memory unit while the page is being displayed. In the pre-reading, a predetermined number of images fewer than the number of images assigned to each page are pre-read for each page other than the page being displayed, in ascending order of distance of each page to the page being displayed.

Claims

1. A display control apparatus comprising:

a display control unit configured to cause a display device to display images stored in a memory unit so that a plurality of images are assigned to each page;

a changing unit configured to change display from a page being displayed on the display device to another page; and

a pre-read unit configured to read images to be displayed in a plurality of pages other than the page being displayed from the memory unit and store the read images in a temporary memory unit while the page is being displayed, wherein

said pre-read unit reads, from the memory unit, a predetermined number of images, fewer than the number of images assigned to each page, for each of the plurality of pages other than the page being displayed, in ascending order of distance of each page to the page that is being displayed.

2. The apparatus according to claim 1, wherein

said pre-read unit reads one image for each of the plurality of pages.

3. The apparatus according to claim 1, wherein

images are displayed on each page in an arrangement in an order of an image number associated with each image, and

said pre-read unit reads images to be displayed at predetermined positions among the images arranged in the order of image number in each page.

4. The apparatus according to claim 1, wherein

said pre-read unit reads all images to be completely displayed in pages adjacent to the page being displayed before reading images in other pages.

5. The apparatus according to claim 1, wherein

once said pre-read unit finishes a process of reading the predetermined number of images for all the pages other than the page being displayed, said pre-read unit repeats the process in order to read the predetermined number of unread images for the plurality of pages.

6. The apparatus according to claim 5, wherein

said pre-read unit first sequentially reads the predetermined number of images fewer than the number of images assigned to each page for each of the plurality of pages other than the page being displayed, in ascending order of distance to the page being displayed, starting from a top image in an image range to be displayed in each page, and then sequentially reads the predetermined number of unread images, starting from a last image in the image range to be displayed in each page.

7. The apparatus according to claim 1, wherein

once said pre-read unit finishes reading the predetermined number of images for all the pages other than the page being displayed, said pre-read unit reads all remaining images to be displayed in each page other than the page being displayed, in ascending order of distance to the page being displayed.

8. The apparatus according to claim 1, wherein

when the display is changed to another page by said changing unit, said display control unit controls to cause the display device to display images read and stored by said pre-read unit in the temporary memory unit among images to be displayed in the another page.

9. A control method for a display control apparatus, comprising:

a display control step of causing a display device to display images stored in a memory unit so that a plurality of images are assigned to each page;

a changing step of changing display from a page being displayed on the display device to another page; and

a pre-read step of reading images to be displayed in a plurality of pages other than the page being displayed from the memory unit and storing the read images in a temporary memory unit while the page is being displayed, wherein

said pre-read step comprises reading, from the memory unit, a predetermined number of images fewer than the number of images assigned to each page for each of the plurality of pages other than the page being displayed, in ascending order of distance to the page being displayed.

10. A non-transitory computer readable medium having stored therein a program for causing a computer to perform the control method for a display control apparatus according to claim 9.