Image analysis – Image compression or coding
Patent
1995-12-07
1998-09-22
Moore, David K.
Image analysis
Image compression or coding
382236, 348405, 348419, G06K 936, H04N 712
Patent
active
058126996
ABSTRACT:
A current level of a virtual transmission buffer is maintained and used to select video frames for compression. The current level is compared to a threshold to determine whether to compress the current frame. The threshold is dynamically maintained between an upper "full" level and a lower "clear" level. If the current level exceeds the full level, the video compression processing is changed to a decline mode in which the threshold is gradually decremented towards the clear level. In addition, if the current level exceeds a "watch" level for too long, then the video compression processing is also switched to the decline mode. The present invention allows the virtual buffer to absorb variability in compressed frame size from frame to frame without resulting in undesired latency.
REFERENCES:
patent: 4893123 (1990-01-01), Boisson
patent: 4933761 (1990-06-01), Murakami et al.
patent: 5046071 (1991-09-01), Tanoi
patent: 5097330 (1992-03-01), Guichard et al.
patent: 5122877 (1992-06-01), Keesman
patent: 5134476 (1992-07-01), Aravind et al.
patent: 5150209 (1992-09-01), Baker et al.
patent: 5317397 (1994-05-01), Odaka et al.
patent: 5333012 (1994-07-01), Singhal et al.
patent: 5351085 (1994-09-01), Coelho et al.
patent: 5367629 (1994-11-01), Chu et al.
patent: 5461422 (1995-10-01), Hsieh
Kronander, "Post--and Pre-Processing in Coding of Image Sequences Using Filters with Motion Compensated History" 1988 Int. Conf. Acoustics, Speech. Sig. Processing, vol. 2, Apr. 1988, pp. 1104-1107.
Waters Kenneth L.
Zhu Chunrong
Chen Wenpeng
Intel Corporation
Kinsella, Esq. N. Stephan
Moore David K.
Murray, Esq. William H.
LandOfFree
Counter-based controller 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 Counter-based controller for video compression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Counter-based controller for video compression will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1631569