Efficient management of memory access requests from a video data stream

A method and apparatus for managing overlay data requests are disclosed. One embodiment of an apparatus includes a request unit and a timer. A request is made by a graphics controller to the request unit for a line of overlay data. The request unit divides the request from the graphics controller in...

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Bibliographische Detailangaben
Hauptverfasser: WITTER TODD M, SREENIVAS ADITYA, MEINERTH KIM
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method and apparatus for managing overlay data requests are disclosed. One embodiment of an apparatus includes a request unit and a timer. A request is made by a graphics controller to the request unit for a line of overlay data. The request unit divides the request from the graphics controller into a series of smaller requests. The smaller requests are issued to a memory controller. Delays are inserted between each of the smaller requests in order to allow other system resources to more easily gain access to memory.