Data apparatus and method having DMA circuitry to...

Details Data apparatus and method having DMA circuitry to... Data apparatus and method having DMA circuitry to...

2005-08-30

2005-08-30

Gaffin, Jeffrey (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S020000, C710S023000, C710S024000, C710S031000, C710S055000, C712S225000, C382S172000, C382S172000, C382S240000, C382S247000

Reexamination Certificate

active

06938105

ABSTRACT:
A data processing apparatus improves speed and efficiency of transfer of bit data, especially, multivalue data bit plane. For this purpose, a memory50holds four 8-bit multivalue data per 1 word, and bit plane coding processing is made by 4×4 (=16) multivalue data (processing block). In a memory area51, the most significant bit (bit7) of respective multivalue data (data0to15in FIG.5) is collected in the order of multivalue data, and stored in one position (hatched portions in FIG.5). Similarly, bit6is collected from the respective multivalue data and stored in one position.

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patent: 08-149308 (1996-06-01), None
patent: 09-27752 (1997-01-01), None

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