Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1998-11-20
2000-10-31
Britton, Howard
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
37524005, 37524007, 382239, H04N 750
Patent
active
061413801
ABSTRACT:
The algorithm assumes a constant bit rate over a timing window of specified duration (e.g., a specified number of consecutive frames), where the current frame to be encoded lies in the interior of the timing window. A target bit rate for the current frame is initially selected by calculating the number of bits already used to encode other frames within the window and then assuming that the remaining available bits allocated to the timing window will be evenly distributed to the remaining unencoded frames in the timing window. The target bit rate may then be optionally adjusted based on scene content, encoder state, and buffer considerations. Through a combination of target bit allocation and frame skipping, spatial and temporal resolutions are maintained within acceptable ranges while meeting buffer delay constraints. The algorithm has also been extended to include PB frames in addition to P-only coders.
REFERENCES:
patent: 5402176 (1995-03-01), Murakami et al.
patent: 5442401 (1995-08-01), Murakami et al.
patent: 5602590 (1997-02-01), Numata et al.
patent: 5721589 (1998-02-01), Murata
patent: 5757434 (1998-05-01), Gunnewiek et al.
patent: 6026190 (2000-02-01), Astle
International Search Report PCT/US99/21841.
Hua L. et al.: "Experimental Investigation on MPEG-2 Based Video Coding at 22 MBPS" IEEE Transactions on Consumer Electronics, US, IEEE Inc., vol. 41, No. 3 Aug. 1995, pp. 615-619.
Krishnamurthy Ravi
Sethuraman Sriram
Britton Howard
Burke William J.
LG Electronics Inc.
Sarnoff Corporation
LandOfFree
Frame-level rate control for video compression does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frame-level rate control for video compression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frame-level rate control for video compression will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2062063