Data byte insertion circuitry

Details Data byte insertion circuitry Data byte insertion circuitry

2006-11-21

2006-11-21

Tsai, Henry W. H. (Department: 2183)

Electrical computers and digital processing systems: processing

Byte-word rearranging, bit-field insertion or extraction,...

C712S224000

Reexamination Certificate

active

07139904

ABSTRACT:
A data byte insertion circuit includes circuitry to generate derivative intermediate data words from input data words of a current and a preceding cycle, repositioning data bytes of the input data words before and after data byte insertion points of the current and preceding cycles, and circuitry to generate re-aligned variants of insertion data bytes of the current cycle. The data byte insertion circuit further includes circuitry to generate a number of multi-bit data bit selection masks, and circuitry to generate an output data word by conditionally using selected parts of the derivate intermediate data words and the re-aligned variants of the insertion data bytes, in accordance with the multi-bit data bit selection masks.

REFERENCES:
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patent: 5276891 (1994-01-01), Patel
patent: 5410682 (1995-04-01), Sites et al.
patent: 5491802 (1996-02-01), Thompson et al.
patent: 5669012 (1997-09-01), Shimizu et al.

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