Method and apparatus for data alignment and parsing in SIMD...

Details Method and apparatus for data alignment and parsing in SIMD... Method and apparatus for data alignment and parsing in SIMD...

2007-09-25

2007-09-25

Sparks, Donald (Department: 2181)

Electrical computers and digital processing systems: processing

Processing control

Logic operation instruction processing

C712S204000, C712S208000, C712S300000, C712S002000

Reexamination Certificate

active

10403152

ABSTRACT:
Execution of a single stand-alone instruction manipulates two n bit strings of data to pack data or align the data. Decoding of the single instruction identifies two registers of n bits each and a shift value, preferably as parameters of the instruction. A first and a second subset of data of less than n bits are selected, by logical shifting, from the two registers, respectively, based solely upon the shift value. Then, the subsets are concatenated, preferably by a logical OR, to obtain an output of n bits. The output may be aligned data or packed data, particularly useful for performing a single operation on multiple sets of the data through parallel processing with a SIMD processor.

REFERENCES:
patent: 3360779 (1967-12-01), Ulrich
patent: 4980853 (1990-12-01), Hutchins
patent: 5898601 (1999-04-01), Gray et al.
patent: 5922066 (1999-07-01), Cho et al.
patent: 5933650 (1999-08-01), van Hook et al.
patent: 6094637 (2000-07-01), Hong
patent: 6122725 (2000-09-01), Roussel et al.
patent: 6175892 (2001-01-01), Sazzad et al.
patent: 6243803 (2001-06-01), Abdallah et al.
patent: 6266758 (2001-07-01), van Hook et al.
patent: 6460127 (2002-10-01), Akerib
patent: 2002/0138535 (2002-09-01), Tsuji
Aubury, et al. Handel-C Language Reference Guide, Aug. 28, 1996, Oxford University Computing Laboratory.
Patterson et al. Computer Organizatin & Design, 1998, Morgan Kaufmann, Second Edition, p. 226.
Website: “MMX and SSE” http://www.abo.fi/˜mats/codeopt/mmx.pdf; printed on Oct. 29, 2002; associated web page last updated on Mar. 23, 2001 (see http://www.abo.fi/˜mats/codeopt.pdf).

Affiliated with

Also associated with

Rating

Method and apparatus for data alignment and parsing in SIMD... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for data alignment and parsing in SIMD..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for data alignment and parsing in SIMD... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3760511