Selective lossless, lossy, or no compression of data based on address range, data type, and/or requesting agent
US7190284B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jan 29, 1999 |
| Grant date | Mar 13, 2007 |
| Priority date | — |
| Expiry date | Jan 29, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated memory controller (IMC) including MemoryF/X Technology which includes data compression and decompression engines for improved performance. The memory controller (IMC) of the present invention preferably selectively uses a combination of lossless, lossy, and no compression modes. Data transfers to and from the integrated memory controller of the present invention can thus be in a plurality of formats, these being compressed or normal (non-compressed), compressed lossy or lossless, or compressed with a combination of lossy and lossless. The invention also indicates preferred methods for specific compression and decompression of particular data formats such as digital video, 3D textures and image data using a combination of novel lossy and lossless compression algorithms in block or span addressable formats. To improve latency and reduce performance degradations normally associated with compression and decompression techniques, the MemoryF/X Technology encompasses multiple novel techniques such as: 1) parallel lossless compression/decompression; 2) selectable compression modes such as lossless, lossy or no compression; 3) priority compression mode; 4) data cache techniqu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.