System for transmitting encoded image data with quick image expansion and contraction
US5227875A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Aug 20, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/236
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for transmitting encoded image data capable of transmitting the multiple view image data, without causing a significant level of an increase of a size of the system, a delay in a data transmission, and a limitation on a number of communication channels. The system includes: an image encoder for encoding orthogonal transform coefficient data obtained by applying an orthogonal transform to image data, and transmitting encoded image data in which the encoded orthogonal transform coefficient data are classified according to their degrees; an image processing for transmitting processed image data containing the encoded orthogonal transform coefficient data in the encoded image data along with a size change rate information indicating a size change rate by which a size of the image data are to be changed; and an image decoder for decoding the encoded orthogonal transform coefficient data in the processed image data into a degree corresponding to the size change rate indicated by the size change rate information in the processed image data by applying an inverse orthogonal transform of said degree to the encoded orthogonal transform coefficient data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.