Method for using a JPEG engine to assist in efficiently constructing MPEG I-frames
US7149360B2 · kind B2 · utility
6Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2002 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Dec 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A camera or other imaging device or other system configures its JPEG engine to produce a JPEG image that is in compliance with the JPEG specification but specially constructed. The configuration is chosen such that the JPEG image information for pixels of an image is stored in 8- or 16-bit groups, unlike a typical JPEG image in which image information is stored in groups of varying numbers of bits. A final software step reads the JPEG image information and constructs an equivalent MPEG I-frame. The 8- and 16-bit grouping in the JPEG image facilitates efficient conversion from JPEG to MPEG.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.