List view optimization

Patent metadata

Field	Value
Publication number	US-8996987-B2
Application number	US-201113174323-A
Country	US
Kind code	B2
Filing date	Jun 30, 2011
Priority date	Jun 30, 2011
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

Techniques are provided for optimizing operations, such as scrolling, that move rendered views for items in a collection relative to a viewable window. An application initially renders only those views within the viewable window. In a background process, the application also builds a pool of rendered views that are outside of the viewable window. Background rendering occurs is timed to not interfere with the user's experience. The pool is constrained in size so as not to over-utilize device memory. When a new item is scrolled or otherwise moved into the viewable window, the application first checks the pool to determine if a view of the new item is already rendered. If so, the application simply displays the pre-rendered view, resulting in minimal processor utilization. The application thus provides the user with a “smoother” scrolling experience. A priority queue for identifying views to replace or overwrite is also discussed.

First claim

What is claimed is:

1. A method performed by one or more computing devices, the method comprising:
maintaining a set of unrendered items;
generating a set of rendered items corresponding to a subset of the unrendered items in the set of unrendered items;
maintaining a first ordering of rendered items in the set of rendered items, the first ordering indicating a display order for the rendered items;
maintaining a second ordering of rendered items in the set of rendered items,…

Assignees

• Rivera Mitchell B
• Iskander Alex
• Apple Inc

Inventors

• Rivera Mitchell B
• Iskander Alex

Classifications

• G06F3/0481 Primary

  Physics · mapped topic