Methods and systems for efficient video compression by recording various state signals of video cameras
US7075985B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 26, 2001 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Dec 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for efficient video compression by recording various state signals of cameras. In accordance with the teaching of the present invention, a video camera with means to record the movement, zooming state, focus state, and aperture state of the video camera is provided. The luminous intensity, camera identification number and frame index are also recorded. These various state signals are recorded along with video and audio signals on recording media, such as magnetic tapes, memory cards, and hard drives in a predetermined data format. Additionally, video compression algorithms, which utilize such state signals to predict the current frame from previous reconstructed images, are provided. In particular, the information on the various states of the video camera is useful in obtaining accurate motion compensated images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.