Systems and methods for digital video high accuracy fast forward, rewind and skip
US8472783B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Aug 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/440281
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In various embodiments, a recording and playback manager of a digital video recorder (DVR), set top box, receiver or other device stores and accesses statistics in a statistics file related to average distances between reference frames (e.g., intra frames or I-frames) within blocks of the video data of the recording. Accessing these statistics during playback enables the system to more accurately locate reference frames to display while executing the playback in a trick mode such as fast forward, rewind or skip. The average distance between reference frames for a particular block of video data may be used to jump from one reference frame to the next reference frame in that block during playback in trick mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.