Invention Grant
- Patent Title: OZIP compression and decompression
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Application No.: US14337113Application Date: 2014-07-21
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Publication No.: US09697221B2Publication Date: 2017-07-04
- Inventor: Anindya Patthak , Victor Chen , Shasank Kisan Chavan , Jesse Kamp , Amit Ganesh , Vineet Marwah
- Applicant: ORACLE INTERNATIONAL CORPORATION
- Applicant Address: US CA Redwood Shores
- Assignee: Oracle International Corporation
- Current Assignee: Oracle International Corporation
- Current Assignee Address: US CA Redwood Shores
- Agency: Hickman Palermo Becker Bingham LLP
- Main IPC: G06F17/30
- IPC: G06F17/30 ; H03M7/30 ; G06F12/04

Abstract:
A method, apparatus, and system for OZIP, a data compression and decompression codec, is provided. OZIP utilizes a fixed size static dictionary, which may be generated from a random sampling of input data to be compressed. Compression by direct token encoding to the static dictionary streamlines the encoding and avoids expensive conditional branching, facilitating hardware implementation and high parallelism. By bounding token definition sizes and static dictionary sizes to hardware architecture constraints such as word size or processor cache size, hardware implementation can be made fast and cost effective. For example, decompression may be accelerated by using SIMD instruction processor extensions. A highly granular block mapping in optional stored metadata allows compressed data to be accessed quickly at random, bypassing the processing overhead of dynamic dictionaries. Thus, OZIP can support low latency random data access for highly random workloads, such as for OLTP systems.
Public/Granted literature
- US20150269180A1 OZIP COMPRESSION AND DECOMPRESSION Public/Granted day:2015-09-24
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