Architecture and algorithms for data compression

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United States of America Patent

PATENT NO 10338820
APP PUB NO 20170351429A1
SERIAL NO

15176082

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Abstract

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A system architecture conserves memory bandwidth by including compression utility to process data transfers from the cache into external memory. The cache decompresses transfers from external memory and transfers full format data to naive clients that lack decompression capability and directly transfers compressed data to savvy clients that include decompression capability. An improved compression algorithm includes software that computes the difference between the current data word and each of a number of prior data words. Software selects the prior data word with the smallest difference as the nearest match and encodes the bit width of the difference to this data word. Software then encodes the difference between the current stride and the closest previous stride. Software combines the stride, bit width, and difference to yield final encoded data word. Software may encode the stride of one data word as a value relative to the stride of a previous data word.

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Patent Owner(s)

  • NVIDIA CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amsinck, Chris Cary, US 4 6
Cutler, Scott San Jose, US 5 41
Dimitrov, Rouslan Santa Clara, US 24 128
Krishnamurthy, Praveen Apex, US 21 1180
Mehra, Karan Cary, US 93 1773
Pool, Jeff Durham, US 7 55

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