Progressive differential motion JPEG codec
US7702161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2005 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/503
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A progressive differential motion JPEG codec is disclosed. The compression encoder of the progressive differential motion JPEG codec comprises a video capture unit, a video capture buffer, a detection unit, a compression unit, and a quality level buffer. The video capture unit is used for receiving an image data and dividing a component of the image data into a plurality of image data blocks. The video capture buffer stores the image data block. The detection unit is electrically coupled to the video capture unit and the video capture buffer for detecting whether a content of the image data block input from the video capture unit is different from a content of the image data block retrieved from the video capture buffer. The compression unit is electrically coupled to the detection unit for compressing the image data block retrieved from the video capture buffer with a predetermined level compression scheme depending on the difference between the content of the image data block input from the video capture unit and the content of the image data block retrieved from the video capture buffer. The quality level buffer assigns and stores an index value indicative of level compression s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.