Abstract: Navigation management occurs in a mobile device during a directory up-down scroll and it involves a user interface and a directory (e.g., mobile directory of photos). The directory is a tree-shaped hierarchy of nodes such that any node on the directory is selectable by a user via the user interface. This way navigation can flow up-down through the directory. Additionally, the navigation management involves associating a state and one or more action items with each node and saving the state. The state is an expanded or collapsed condition of the node. If the state of a particular node is expanded, additional nodes at a lower level of the hierarchy are presented to the user. If its state is collapsed only that particular node is presented and the other nodes are hidden. The user interface includes for any node selected by the user its associated one or more action items.

Abstract: The need for minimizing the impact of image movement on the memory bandwidth consumption in a mobile device is addressed, in part, by the proposed approach to image movement. The approach for moving an image in a mobile device involves maintaining place holders and a selected holder in the memory of the mobile device. The approach further involves attributing indicia to the image, assigning the indicia of the image to one of the place holders, maintaining a selected holder in the memory, selecting the image and saving in the selected holder the screen location associated with the place holder to which indicia of the selected image is assigned. To move the selected image, the additionally involves reassigning the indicia of the selected image to a different one of the place holders and replacing in the selected holder the saved screen location associated with the place holder with the screen location associated with the different place holder.