| 摘要 |
A television receiver for receiving data signals, particularly teletext, associated with a television signal has a page memory (13) for storing a plurality of pages for display on a display screen. In order to use the memory with maximum effectiveness a queue is formed in order of priority of requests for allocation of memory locations for storing pages. Various features such as FASTEXT, TOP, EPG, WST level 2.5 each require a certain minimum number of pages to allow the feature to be achieved. Each feature has a dedicated page request generator (PG-1 to PG-n) which each provide an ordered list of page requests. These are fed to priority setting means (P) which allocates each of the page request generators a given priority based on a priority scheme (PS) and a list of connected page request generators (PGL). The page request generators (PG-1 to PG-n) react to system events source (S1), broadcast event sources (S2), and/or user event sources (S3). This enables the easy addition or deletion of features.
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