Data compression
US5684896A · kind A · utility
8Cited by
11References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 21, 1994 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Jun 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data compression apparatus is described which applies a dynamically variable degree of quantisation Q.sub.s to input data so as to control blocks of output data to have a predetermined maximum size. The dynamic control can be carried out on an inter-block basis or an intra-block basis. An overflow detector is provided for inserting an overflow indicator within blocks of compressed data to indicate when overflow has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.