Adaptive interframe prediction coded video communications...

H - Electricity – 04 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

350/33

H04N 7/12 (2006.01) G06T 9/00 (2006.01) H04N 7/32 (2006.01) H04N 7/36 (2006.01) H04N 7/46 (2006.01)

Patent

CA 2016641

At the transmit end of a video communications system, a first motion vector is derived from successive frames during a frame transmit mode and a second motion vector is derived during or immediately following a frame discard mode. An interframe predicted error signal is generated which is representative of the difference between each input frame and a motion-compensated, previous frame during the frame transmit mode, the difference being zero during the frame discard mode. The predicted error signal and the vectors are transmitted to the receive end of the system. In a first embodiment, the second motion vector is derived at the transmit end from frames spaced apart by a discarded frame, and at the receive end, original frames are recovered from the predicted error signal as well as from the first and second motion vectors, and the second motion vector is down-scaled and evaluated whether it is valid or not. During frame discard mode, motion compensation is performed on the recovered frame using the down-scaled vector in response to a valid evaluation, but no compensation is performed if invalid evaluation is made. In a second embodiment, the second motion vector is derived at the transmit end from successive frames using a larger block size than that used in the first motion vector. At the receive end, the first motion vector as well as the error signal are used in recovering original frames. During the frame discard mode, the second vector is simply used for motion compensation.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Adaptive interframe prediction coded video communications... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive interframe prediction coded video communications..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive interframe prediction coded video communications... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1767733

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.