Method and apparatus for adaptive adjustment of cache allocation

Details Method and apparatus for adaptive adjustment of cache allocation Method and apparatus for adaptive adjustment of cache allocation

1996-04-22

1997-09-23

Evans, Arthur G.

Pulse or digital communications

Spread spectrum

Direct sequence

375110, G06K 1500

Patent

active

056712464

ABSTRACT:
A computer downloads rasterized font characters to a connected printer and employs a method which enables a rendering of large character sets by the printer, even though the printer is not designed to internally handle such large character sets. The method enables the computer to control allocations of memory in the printer for storage of font data. Initially, the computer arranges for the printer to allocate an initial portion of memory for storage of font data. A printer driver within the computer then analyzes data segments to be sent to the printer to determine if a respective data segment is text-related data; graphics-related data or raster data. If it is determined that text-related data is to be sent to the printer, it is next determined if the printer stores font data to enable a printing of a character designated by a current character-defining data segment. If the printer does not store the necessary character, the method causes, if necessary, the printer to allocate further memory for storage of the additional font data to be supplied by the computer. The computer further controls the printer to revise the portion of memory allocated for the storage of font data, if either graphics-related data or raster data is being sent to the printer.

REFERENCES:
patent: 4907094 (1990-03-01), Mishima et al.

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