System for efficiently coding a moving-picture signal, capable of selecting several different coding systems
US4999704A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Dec 22, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An efficient coding system for a moving picture signal is provided, which comprises a large number of detection elements for individually picture signals corresponding to respective frames of a plurality of successive frames, a plurality of group signal detection elements for detecting, as a set of groups, picture signals with respect of the entirety of a plurality of detection elements constituting several successive groups, each group comprised of a several number of the detection elements, a change quantity detection element for detecting in sequence change quantities of signals of two successive groups, a judgment element for judging whether or not the change quantity is above a predetermined quantity, a plurality of efficient coding elements of different types for predicting a difference between the picture signals and coding it, or for coding it on the basis of polarization of a power spectrum of the picture signals in order to remove redundancy of a group of the picture successive signals to code them, and a select element for selecting and outputting data having a smaller data content coded by the coding elements when the change quantity of the picture signals is above the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.