Patent ID: 7590381

Claim:
A broadcast receiver, comprising a receiver for receiving a broadcasting signal including text information objects in which text information is contained, wherein the text information objects are arranged successively in time in the broadcasting signal, and each text information object comprises an object identification number; a display for displaying text information to be displayed; a user selector operable by a user; a cache memory for temporarily storing text information objects already received; a controller configured to change the text information to be displayed from currently displayed text information of a currently displayed text information object to text information of a text information object to which the current text information object refers, depending on an operation of the user selector by the user, wherein the object identification number of the current text information object differs from the object identification number of the text information object to which the same refers; and a cache displacer for comparing the object identification number of a currently received text information object in the broadcasting signal with the object identification number of each text information object stored in the cache memory, and storing the currently received text information object in the broadcasting signal if the object identification number thereof matches the object identification number of none of the text information objects stored, wherein the text information objects are arranged in a tree structure and the controller is configured to perform the storage by overstorage of a text information object to be overstored among the ones stored in the cache memory, as it is indicated by a displacement strategy, wherein the displacement strategy defines a priority among the currently received text information object and the ones stored in the cache memory depending on their location and the location of the currently displayed text information object in the tree structure, wherein, among the text information objects stored in the cache memory, those with lower priority than the currently received text information object are eligible as potential text information objects to be overstored.