US 11,055,046 B2
Image forming apparatus, method of controlling the same, and storage medium
Chie Ito, Abiko (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 10, 2019, as Appl. No. 16/507,569.
Claims priority of application No. JP2018-139624 (JP), filed on Jul. 25, 2018.
Prior Publication US 2020/0034089 A1, Jan. 30, 2020
Int. Cl. G06F 15/00 (2006.01); G06F 3/12 (2006.01)
CPC G06F 3/128 (2013.01) [G06F 3/1256 (2013.01); G06F 3/1285 (2013.01); G06F 3/1293 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An image processing apparatus capable of displaying previews of a plurality of files stored in a storage, comprising:
a display that is operable to display a preview;
a memory device that stores instructions; and
one or more controllers that execute the instructions stored in the memory device to cause the image processing apparatus to function as:
a unit that, in a state in which a screen including a preview of a first file but not including previews of a second file and a third file is displayed on the display, generates cache data for displaying a preview of the second file, without a user instruction, based on that the second file is a first type, and does not generate cache data for displaying a preview of the third file based on that the third file is a second type,
wherein the cache data for displaying the preview of the second file is read out to display the preview of the second file on the display upon an instruction for designating the second file as a target of the preview in a state in which the cache data for displaying the preview of the second file is held,
wherein cache data for displaying of a preview of the third file is generated to display the preview of the third file on the display upon an instruction for designating the third file as a target of the preview, and
wherein the file of the first type includes a JPG file or a TIFF file, and a file of the second type includes a PDF file.