REDUCING BITMAP MANAGEMENT OVERHEAD

A bitmap manager creates a cached copy of a bitmap and a shadow copy of a bitmap. The contents of the shadow copy are examined as are the bitmap cache to determine when it is necessary to write bitmap data to persistent storage. Extra bits are set or left set in the bitmap shadow copy to minimize th...

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Hauptverfasser:	CROSLAND SIMON, NEWTON PHILIP J, YIM WAI C
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
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creator	CROSLAND SIMON NEWTON PHILIP J YIM WAI C
description	A bitmap manager creates a cached copy of a bitmap and a shadow copy of a bitmap. The contents of the shadow copy are examined as are the bitmap cache to determine when it is necessary to write bitmap data to persistent storage. Extra bits are set or left set in the bitmap shadow copy to minimize the frequency of having to write bitmap data to persistent storage.
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title	REDUCING BITMAP MANAGEMENT OVERHEAD
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