Patent ID: 8799823
Filing Date: 2014-08-05
Classification: H04N

Abstract:
1. A display device comprising: a display unit including a first portion and a second portion; a first display control unit configured to display one of a plurality of screen images on the first portion, the plurality of screen images including a base screen image, the first display control unit changing a screen image to display from one to another of the plurality of screen images along a hierarchical screen navigation path starting from the base screen image; a title string storing unit configured to store a plurality of title strings, each title string indicating one of the plurality of screen images; a concatenated string creating unit configured to create a concatenated string including the title strings and separating characters alternately arranged, each title string corresponding to a screen image in an hierarchical position of the hierarchical screen navigation path from the base screen image to a current screen image that is displayed on the first portion currently; a determining unit configured to determine whether or not the concatenated string is too large to be displayed entirely on the second portion; a navigation string creating unit configured to create a navigation string by deleting at least one of the title strings from the concatenated string when the determining unit determines that the concatenated string is too large to be displayed entirely on the second portion, a second display control unit configured to display the navigation string, including the title strings and the separating characters, on the second portion; and a priority acquiring unit configured to acquire a priority value assigned to each title string of the plurality of title strings, the priority value being separate from the hierarchical position of each title string; wherein the navigation string creating unit is configured to repeatedly delete the title strings one at a time based on the priority value until the determining unit determines that the concatenated string becomes small enough to be displayed entirely on the second portion, without deleting the separating characters from the displayed concatenated string, wherein the navigation creating unit deletes title strings with the lowest priority values before deleting title strings with higher priority values; and wherein, if at least two title strings are assigned with a lowest priority value, the navigation string creating unit deletes one of the at least two title strings based on the hierarchical position by deleting, the one of the at least two title strings indicating a screen image nearest a base screen image side of the navigation path among at least two screen images corresponding to the at least two title strings.