Invention Grant
- Patent Title: Data compression with redundancy removal across boundaries of compression search engines
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Application No.: US15593439Application Date: 2017-05-12
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Publication No.: US10599355B2Publication Date: 2020-03-24
- Inventor: Hongmei Xie , AbdelHakim S. Alhussien , Alex Ga Hing Tang , Sundararajan Sankaranarayanan , Erich F. Haratsch
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Taylor English Duma LLP
- Main IPC: G06F3/06
- IPC: G06F3/06 ; H03M7/30

Abstract:
Data compression techniques are provided that remove redundancy across the boundary of compression search engines. An illustrative method comprises splitting the data frame into a plurality of sub-chunks; comparing at least two of the plurality of sub-chunks to one another to remove at least one sub-chunk from the plurality of sub-chunks that substantially matches at least one other sub-chunk to generate a remaining plurality of sub-chunks; generating matching sub-chunk information for data reconstruction identifying the at least one removed sub-chunk and the corresponding substantially matched at least one other sub-chunk; grouping the remaining plurality of sub-chunks into sub-units; removing substantially repeated patterns within the sub-units to generate corresponding compressed sub-units; and combining the compressed sub-units with the matching sub-chunk information to generate a compressed data frame. The data frame optionally comprises one or more host pages compressed substantially simultaneously, and the compressed data frame for a plurality of host pages compressed substantially simultaneously comprises a host page address for each host page.
Public/Granted literature
- US20180329642A1 DATA COMPRESSION WITH REDUNDANCY REMOVAL ACROSS BOUNDARIES OF COMPRESSION SEARCH ENGINES Public/Granted day:2018-11-15
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