Efficient signal compression format schemes
US9215297B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2013 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Mar 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of efficient signal compression format schemes are described. In various embodiments, samples are grouped into one or more blocks. One or more scaling factors are determined for the samples in the one or more blocks. In some cases, a block scaling factor is determined for each block. Further, in some embodiments, if a unique scaling factor exists among samples in a block, the position of the sample is identified. In turn, sign extension bits are scaled from the one or more blocks, and samples in the one or more blocks are quantized. In one embodiment, based on a number of sign extension bits scaled from the block and whether the unique scaling factor exists, a scaling code word is encoded for the block. In other embodiments, implicity, adaptive scaling, and/or adaptive quantization, for example, are used to increase the performance of the compression schemes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.