Image decoding device and image encoding device
US6385343B1 · kind B1 · utility
43Cited by
6References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2000 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Jul 3, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6332
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image decoding device is provided which performs expansion processing and reverse orthogonal conversion in fixed block units with respect to image compression data. The image decoding device is provided with an error block detection means (error block detection section 4) which receives a threshold value and an image signal in frequency domains, which determines whether or not an error is contained in block data based on the threshold value and the image signal in the frequency domain and which outputs a detection state in the block data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.