Title:
APPARATUS AND METHOD FOR SINGLE PASS ENTROPY DETECTION ON DATA TRANSFER
Document Type and Number:
Japanese Patent JP2017011703
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus and method for a single pass entropy detection on data transfer.SOLUTION: A processor is configured to group a plurality of subsets of data from an input data stream and compute a first hash value corresponding to a first grouped subset of data. Additionally, the processor is configured to detect a match between the first hash value and a second hash value stored in a hash table. Furthermore, the processor is configured to monitor a hash value match frequency for the input data stream, increment a counter value in response to a detection of the match and determine an entropy level for the input data stream on the basis of the counter value relative to a frequent hash value match threshold. The processor is configured to either initialize performance of a data compression operation when the counter value meets or exceeds the frequent hash value match threshold or refrain from the performance of the data compression operation when the counter value fails to meet the frequent hash value match threshold.SELECTED DRAWING: Figure 2A
Inventors:
ASHWIN NARASIMHA
ASHISH SINGHAI
VIJAY KARAMCHETI
KRISHANTH SKADAKUMARAN
ASHISH SINGHAI
VIJAY KARAMCHETI
KRISHANTH SKADAKUMARAN
Application Number:
JP2016121084A
Publication Date:
January 12, 2017
Filing Date:
June 17, 2016
Export Citation:
Assignee:
HGST NETHERLANDS BV
International Classes:
H03M7/42; G06F13/12
Domestic Patent References:
| JPH06290020A | 1994-10-18 | |||
| JP2010061518A | 2010-03-18 | |||
| JPH06290020A | 1994-10-18 | |||
| JP2010061518A | 2010-03-18 |
Foreign References:
| US20110264676A1 | 2011-10-27 | |||
| US20110264676A1 | 2011-10-27 | |||
| US20130179659A1 | 2013-07-11 |
Attorney, Agent or Firm:
Haruka International Patent Office