Abstract: A method for encoding screen outputs of an application to a series of video sequences, in which each video sequence can comprise an intra-frame (I-frame) and inter-frames (P-frames) relating to the I-frame, and each video sequence is formed for one screen output. The method can comprise forming a first video sequence for a first screen output, wherein the first video sequence can include an I-frame and (p-frames), and forming a second video sequence including an I-frame and (P-frames) for a second screen output, wherein the I-frame of the second video sequence can be obtained by encoding a changed area of the second screen output compared to the first screen output. A device for encoding, encoder, a device for decoding, and a decoding are also provided. The video data can be reduced according to the present invention.

Abstract: A method and apparatus are provided for delivering multicast media in a network in which at least some nodes do not support delivery of multicast packets. A RTSP SETUP request is sent to a streaming server to send multicast packets, encapsulated within unicast wrappers, to a gateway node in the network. The RTSP SETUP request includes details both of the multicast destination address, and of the unicast destination address of the gateway node, requiring an extension to the RTSP protocol as currently defined and enabling the media server to send multicast packets in a unicast tunnel dynamically.

Abstract: The invention discloses a method, a terminal and a media server for supporting Picture in Picture (PiP) in a communication network. The method comprises sending to a media server (200) a first request (306) to setup a first channel streaming session, sending to the media server (200) a second request (310) to setup and a second channel streaming session, and rendering first channel content and second channel content as streamed over the first channel streaming session and the second channel streaming session at the same time.

Abstract: A method and apparatus are provided for delivering multicast media in a network in which at least some nodes do not support delivery of multicast packets. A RTSP SETUP request is sent to a streaming server to send multicast packets, encapsulated within unicast wrappers, to a gateway node in the network. The RTSP SETUP request includes details both of the multicast destination address, and of the unicast destination address of the gateway node, requiring an extension to the RTSP protocol as currently defined and enabling the media server to send multicast packets in a unicast tunnel dynamically.

Abstract: The present invention relates to nonlinear optical crystals of compound Na3La9B8O27 and producing method and uses thereof. From the Na3La9B8O27 compound, large size single crystal of Na3La9B8O27 could be prepared by flux method. Na3La9B8O27 crystals are non-hygroscopic, and possess stronger nonlinear optical effect and good mechanical properties. They meet the requirements for the frequency conversion of blue—green wavelength lasers and could be used to prepare nonlinear optical devices.

Abstract: The present invention relates to nonlinear optical crystals of compound Na3La9B8O27 and producing method and uses thereof. From the Na3La9B8O27 compound, large size single crystal of Na3La9B8O27 could be prepared by flux method. Na3La9B8O27 crystals are non-hygroscopic, and possess stronger nonlinear optical effect and good mechanical properties. They meet the requirements for the frequency conversion of blue—green wavelength lasers and could be used to prepare nonlinear optical devices.

Abstract: The present invention provides a compound having the chemical formula of R.sub.2 MB.sub.10 O.sub.19, wherein R is one or more elements selected from the group consisting of rare-earth elements or Y; M is selected from the group consisting of Ca, Sr, Ba, a single crystal of the compound, a producing method and uses thereof. The compound is congruently melting, which is suitable for producing large size single crystal of R.sub.2 MB.sub.10 O.sub.19 with melt methods, especially pulling method, at a low cost. The crystal resulted therefrom has the same NLO effect as LBO with superior mechanical properties, and it is antideliquenscent. The crystal of the present invention can be used for the frequency-conversion of blue-green wavelength lasers.

Abstract: The present invention relates to single crystals of CsB.sub.3 O.sub.5 having large dimension and high quality which can be grown by pulling methods. The single crystals of CsB.sub.3 O.sub.5 are useful as NLO materials. The NLO devices made of CsB.sub.3 O.sub.5 single crystals can be used in a laser system of high power density and relatively large divergence and posses a character of high SHG conversion efficiency. Moreover, the NLO devices of the present invention are capable of producing coherent harmonics of wavelength as short as 170 nm and tolerating larger processing error of crystals.

Abstract: The present invention relates to single crystals of CsB.sub.3 O.sub.5 having large dimension and high quality which can be grown by pulling methods. The single crystals of CsB.sub.3 O.sub.5 are useful as NLO materials. The NLO devices made of CsB.sub.3 O.sub.5 single crystals can be used in a laser system of high power density and relatively large divergence and posses a character of high SHG conversion efficiency. Moreover, the NLO devices of the present invention are capable of producing coherent harmonics of wavelength as short as 170 nm and tolerating larger processing error of crystals.