Abstract: Describe is a video stream mixer (60) for generating a mixed encoded video stream from an encoded primary video stream associated with a primary window, and at least one encoded secondary video stream, each associated with a corresponding secondary window that is smaller than the primary window.

Abstract: The invention relates to a method for disabling a discontinuous transmission node DTX of a speech encoder if a music signal is detected in a call input signal. The music signal is detected by determining an activity factor corresponding to the relation of sound signal periods relative to scheme signal periods. If the activity factor is higher than a specified activity factor, the DTX is disabled.

Abstract: Describe is a video stream mixer (60) for generating a mixed encoded video stream from an encoded primary video stream associated with a primary window, and at least one encoded secondary video stream, each associated with a corresponding secondary window that is smaller than the primary window.

Abstract: A network entity and computer program for detecting occurrence of transmission resynchronizations in a network carrying packets subject to variable delays, and adaptively varying the play out time of data packets. The method may include that the packets are received at a network entity and forwarded by delaying them by a jitter protection time, and determining for a predetermined time period a set of arrival time jitter values. A peak to peak value may be determined indicating the largest difference among the values included in the determined set of arrival time jitter values and detecting an out of range condition. The peak to peak value may be compared with the jitter protection time when the out of range condition is detected and detecting that a resynchronization occurred on the basis of the comparing.

Abstract: The invention relates to a method for disabling a discontinuous transmission node DTX of a speech encoder if a music signal is detected in a call input signal. The music signal is detected by determining an activity factor corresponding to the relation of sound signal periods relative to scheme signal periods. If the activity factor is higher than a specified activity factor, the DTX is disabled.

Abstract: The present invention is concerned with a method, a network entity and computer program for detecting occurrence of transmission resynchronizations in a network carrying packets subject to variable delays. The present invention is further concerned with adaptively varying the play out time of data packets. According to a method embodying the invention, the packets are received at a network entity and forwarded by the network entity by delaying them of a jitter protection time. The method comprises determining (S110) for a predetermined time period a set of arrival time jitter values comprising values corresponding to jitters of data packet arrival time for at least a plurality of the received data packets.

Abstract: A method of transcoding from H.263 coded video frames to H.261 coded video frames, the method comprising for each INTER coded macro block (MB) of each frame, determining whether a component of the motion vector (MV) of the MB has a half pixel value, if yes, carrying out a MV search using the current H.263 decoded MB and a previous decoded frame to determine a new MV, the MV search being restricted to the vicinity of the H.263 coded MV, and coding the MB into an H.261 format using the new MV.

Abstract: An IPv6 mobile node is described herein that compresses a packet such that the compressed packet which includes an outer IP header, a compressed inner IP header and data can be sent within a bi-directional tunnel via one or more IP networks to a remote device (e.g., home agent, correspondent node, another mobile node). The IPv6 mobile node can also compress the outer IP header in the packet in addition to compressing the inner IP header if it is located in a wireless access network. The remote device can compress the packet in the same manner and send it to the IPv6 mobile node.

Abstract: A method of transcoding from H.263 coded video frames to H.261 coded video frames, the method comprising for each INTER coded macro block (MB) of each frame, determining whether a component of the motion vector (MV) of the MB has a half pixel value, if yes, carrying out a MV search using the current H.263 decoded MB and a previous decoded frame to determine a new MV, the MV search being restricted to the vicinity of the H.263 coded MV, and coding the MB into an H.261 format using the new MV.