OZIP compression and decompression
US9697221B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2014 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Jun 29, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/6011
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.