261 results about "Multimedia transmission" patented technology

Private Multimedia Network (PMN) complements, and is an improved alternative to digital videoconferencing and multimedia delivery systems. PMN's desktop and meeting room delivery system is designed to support the exponential growth of enterprise team-based initiatives. PMN provides “one-stop-shopping” for the full multimedia rubric. It delivers user-friendly control and cost / effective TV and broadcast quality videoconferencing and other multimedia services to organizations with “critical mass” campuses and building complexes. Though digital systems dominate the videoconferencing marketplace, PMN's hybrid digital / analog architecture has no digital peer in breadth or quality of service within or between campuses. The novel architecture leverages advances in analog video short-haul technology, digital long-haul technology, and telephony audio and control technology to deliver four-level multimedia services: 1) premise; 2) campus; 3) multi-site; and 4) ubiquitous (any site with ITU compatible multimedia equipment (e.g., videoconferencing) and communication links). On balance, the price / performance afforded by PMN's centralized Telco-based control and audio delivery combined with its decentralized broadcast quality video distribution raise videoconferencing and other multimedia services to a new level of ubiquity. Just as telephones and PC LANs, PMN delivers expensive Boardroom and mobile cart videoconferencing capabilities to every desktop via existing multimedia wall plates. The key phases for this invention are: Lip-synchronization across differing network communication links and protocols; Ubiquitous multimedia service; Cost / effective room and desktop deployment; Telco control and audio; Broadcast quality video; Isochronous Quality; Centralized control and distributed operation; and Interoperable architecture.

The transmission of ATM, Internet, and satellite communications is unified through international standardized protocol embedment. Global and Local performance optimization are achieved through the combination of combinatorial, dynamic, and probabilistic programming. A simultaneous domino effect of bandwidth conservation, efficiency enhancement, reliability improvement, traffic congestion prevention, delay minimization, and speed multiplication are realized for any digital communication system, particular in Internet. With three levels of error coding in ATM cells, the loss cell recovery and bit integrity are preserved. From its mathematical roots, new combinatorial sets are systematically generated, and applications of the sets are identified. Among the applications, optimal sequences can be produced for multi-user and multi-function communication system designs. Optimality is in terms of maximum possible number of sequences with given sequence length and sequence characteristics. The results are unique and theoretically proven. By serial and parallel concatenation of error codecs, reliability of multimedia transmission can be satisfied to any desirable level. As a part of the unified transmission scheme, the acquisition and synchronization method of cascading sequences exhibits significant improvement in correlation properties and detection probabilities. A method of using block designs is demonstrated to derive, to generate, and to construct low-density parity check block codes and threshold decodable convolutional codes. An efficiency evaluation method is formulated for the combination operation of ATM, Internet, and satellites.

Transmitting media information from a transmitting device to a receiving device. To perform the transmission a media stream is encoded and packets are formed from the encoded media stream, the packets containing application data units, the application data units having a decoding order. At least two blocks are generated from the packets. The packets of the at least two blocks are organized into a first group and a second group, the first group being decodable without reception of said second group. The transmission order of the packets of said first group is arranged succeeding packets of said second group such that the application data units in the transmission order are at least partly in a different order than the decoding order.

A relay apparatus on a network includes an analysis section that analyzes multimedia contents transmitted from a contents provider. The relay apparatus temporarily stores contents identifiers, component information of the contents, and element data pointed by pointers of the component information, and creates a transmission sequence for transmitting the element data. A transmission section transmits the contents identifier, the contents component information and the element data according to the transmission sequence to a service provider. When the relay apparatus receives a request from a terminal or from a service provider even before the service provider completes registration of the entire multimedia contents, the relay apparatus or the service provider can start rendering multimedia transmission services to the terminal.

In one embodiment, the systems and methods utilizes an enciphered permit identification number, called a session certificate, to reference the policy attribute values and session key that are stored in a secured, online reference monitor (SRM). The session key is used to encipher confidential communications, such as voice and audio communications over the Internet (VoIP), between computers. Each computer uses a unique key with a cryptographic transaction protocol for authentication and key agreement (PAKE) to securely communicate with the SRM. A sender computer uses PAKE to get a session certificate and a session key from the SRM. It sends the session certificate to a receiver computer. The receiver computer sends the session certificate to the SRM and gets back the session key. The sender computer encrypts its VoIP message with the session key and transmits it to the receiver computer. The receiver computer decrypts the VoIP message.

Disclosed is a transcoding method and apparatus for a mobile communication system provided with a transcoder. The transcoding method includes receiving a request for media content and codec information required for the requested media content, receiving the requested media content from a media content server and determining whether the received codec information exists, transformatting a format of the received media content by a codec of the codec information if the received codec information exists, searching the codec list and installing the codec information and transformatting the format of the received media content using the installed codec, determining whether a transmission bandwidth through which the transformatted media content are transmitted is smaller than a bandwidth of the transformatting codec, transrating the format of the media content by a codec suitable for the transmission bandwidth if the transmission bandwidth is smaller than the bandwidth of the transformatting codec, and transmitting the transrated media content.

A method for efficiently transmitting several multimedia streams to one or more multimedia receivers is disclosed comprising: defining a minimum acceptable time for rendering a multimedia stream to a user when the user selects a particular stream; defining a packet size for packets containing data for each multimedia stream, the packet size defined based on one or more performance characteristics of mass storage devices on the one or more multimedia receivers; concurrently transmitting the packets for each multimedia stream to the one or more multimedia receivers; continually storing the multimedia streams on the mass storage devices; and playing back the multimedia content from the mass storage devices responsive to a user tuning to a particular multimedia stream when a delay greater than the minimum acceptable time would otherwise result waiting for a next packet containing data for the particular multimedia stream to arrive.

The invention provides a multi-media transmission system in IM (Instant Messaging), which is characterized by comprising a client, a P2SP server and a P2P coupling end, wherein the client is connected with an internet and is provided with an external interface used for connecting with the P2SP server and the P2P coupling end through the network and transmitting data; the client also comprises a multi-media management assembly obtaining multi-media data source through the external interface; the P2SP server is provided with a web server and a file information server, and the web server is directly connected with the client 100 through the network; the file information server and the web server are directly connected and carry out data interaction mutually; and the P2P coupling end is provided with corresponding P2P downloading port and P2P uploading port which are respectively used for downloading and uploading multi-media files by the client. The invention provides a quick-speed and effective network multi-media file transmission system and can be used for simultaneous action of multiple transport protocols to reasonable utilize the network resources.

A system and method for improving communication between a switched network and a packet network is disclosed. In a simplified embodiment, a signaling gateway is utilized for converting signaling in a first protocol into a second protocol, and from the second protocol to said first protocol. At least one media gateway is utilized for converting multimedia provided in a first format into a second format, and from the second format into the first format. A session router for selecting at least one multimedia transmission route to a destination is also utilized, wherein the destination is specified by the switched network. In addition, a media router is also utilized for guiding the multimedia to the destination after conversion by the media gateway.

Systems and methods are presented for sharing multi-media applications and files on line. A central server acts as the receiving, organizing and playing point for multi-media applications from multiple users having authorized access to a particular member's secure position within the central server.

The present invention sends multiple versions of a multimedia packet to the base station, and, based on the radio channel and traffic characteristics, an appropriate version of the multimedia packet is selected to send to the mobile station at a given time. In this way, source transmission is improved to instantaneous conditions. The steps of the present invention are performed in conjunction with RTP used for multimedia transmission over internet protocol (IP) networks. In a first embodiment, the multiple versions are sent to the base station in the same RTP packet, and the base station strips out the extraneous versions. In a second embodiment, the base station receives multiple RTP packets having identical information in the packet header in many fields, and selects an appropriate one among these for transmission to the mobile station, discarding the rest.

A method is provided for transmitting data from a sender to a number of receivers. Also provided are an emitting and / or receiving unit and a communication system. The present invention seeks to provide a method, an emitting and / or receiving unit and a communication system for the efficient, resource saving and energy saving transmission of data to a group of receivers of a point-to-multipoint service. To this end, a point-to-multipoint service is carried out as an extension of a broadcast service CBS in a multi-layer protocol system, providing a multimedia transmission and / or a multicast service, preferably in the form of a multimedia broadcast / multicast service MBMS, during the distribution and / or planning of the use of system resources and the use of a discontinuous reception DRX.

The invention discloses an adaptive coding method based on VR terminal feedback and belongs to the technical field of multimedia transmission. The core concept of the method comprises the steps that a transmission mechanism is improved; a panorama video is segmented into a plurality of visual angle videos; each piece of visual angle video information is independently coded and transmitted; the visual angle video information demanded by a user is transmitted in real time according to a terminal visual angle tracking technology; other visual angle information is transmitted in a low bit rate; various visual angle videos are spliced into the panorama video at the terminal; the user is enabled to obtain suitable visual angle information through adoption of the terminal scoring feedback mechanism; a scoring instruction of the user is transmitted to a server; and the server maps different bit rates to the terminal according to the user scores. The invention has the advantages that under the existing transmission channel capacity, the panorama video sill can be transmitted, so a VR technology can be realized on various platforms, the method is applicable to wide groups, a channel itself does not need to be excessively improved, and the user is enabled to select the suitable subjective watching experience through adoption of the terminal scoring feedback mechanism.

An apparatus and a method of arbitrarily adjusting the output time of caption information included in a received multimedia transport stream for broadcasting, by user input. The method includes: receiving an input of a time value for adjusting the output time of caption information, from a user through a user interface; by demultiplexing the multimedia transport stream, dividing the transport stream into video, audio, and data packets, decoding each packet, and storing the decoded packets in buffers corresponding to a type of each packet; resetting the output time of the caption information by adding the input time value to or subtracting the input time value from the output time included in the video or audio packet; and according to the output time of the reset caption information, blending the data stored in the buffer with the video information and presenting the blended information on the screen.

A method for transferring a multimedia file from a user's mobile device to user equipment associated with another user is disclosed. The method includes sending an invitation from the user's mobile device to the user equipment to request a transfer of the multimedia file. The method also includes setting up a bearer data channel between the user's mobile device and the equipment to facilitate the transferring of the multimedia file, the transferring is configured to be accomplished using Message Sessions Relay Protocol (MRSP) or Real-Time Transfer Protocol (RTP). The method further includes transferring the multimedia file using the MSRP or RTP and the bearer data channel.

The invention discloses a multimedia transmission system, a receiving terminal and the receiving method. The receiving terminal can receive multimedia service from a mobile multimedia broadcasting service server through a mobile multimedia broadcasting network, also can receive the identical multimedia service from a website server through the internet, monitors the quality of the multimedia service received in two receiving methods during the initial receiving process and the multimedia service playing process of the receiving terminal, and selects a receiving method with the service quality meeting the playing requirements according to the receiving quality to receive the multimedia service. Through the application of the invention, switching between two network transmission methods can be performed, the purpose of network coverage and complement is achieved, the disadvantage that a single network can not be seamlessly covered is overcome, and thus the users can be provided with the multimedia service better.

[Problem] In a system that transmits content data from a content replay device to a content output device, to prevent a deterioration in audio quality or video data picture quality while being able to increase the simplicity of a setting-altering operation without requiring complicated signal processing. [Solution] The present invention is provided with: the content replay device, which receives an operation clock signal transmitted from the content output device via an operation clock transmission cable, operates on the basis of the operation clock signal, and transmits content data replayed by a replay unit to the content output device via a multimedia transmission cable; and the content output device, which generates the operation clock signal transmitted to the content replay device on the basis of an output device operation clock signal, transmits the operation clock signal to the content replay device via the operation clock transmission cable, and receives, performs signal processing on, and outputs to an external device the content data transmitted from the content replay device via the multimedia transmission cable.

The invention discloses an intelligent terminal and a method and system for transmitting and displaying multimedia files. The method includes the steps that after a multimedia file transmission application program in the intelligent terminal receives a multimedia transmission instruction input by a user, an SOAP command carrying multimedia playing indication information and the chained address of a multimedia file selected by the user is transmitted to equipment which is selected by the user and has established connection with the intelligent terminal in a same WLAN; after a DLNA in the equipment selected by the user receives the SOAP command, if it is confirmed that the SOAP command carries the multimedia playing indication information, a file acquisition request is transmitted to the intelligent terminal according to the chained address of the multimedia file, and the multimedia file is acquired from the intelligent terminal to be played on the equipment. With the intelligent terminal and the method and system for transmitting and displaying multimedia files, the multimedia files on the intelligent terminal can be transmitted to a smart television to be played and displayed conveniently for the user.

The invention provides a flow-control-based data transmission method, a flow-control-based exchanger, a node server and a flow-control-based communication system to solve the problem that a current IP network cannot ensure the quality of network transmission. The method comprises the following steps of: aiming at each service application, acquiring flow control information by the exchanger, wherein the flow control information comprises a transmitting time interval and the size of transmitted data; receiving a data packet by the exchanger, and placing the data packet into a packet buffer queue; and polling the packet buffer queue by the exchanger, taking a packet from the packet buffer queue according to the flow control information, and transmitting the packet. The invention can realize accurate flow control and is suitable for multimedia transmission, and the transmission quality is ensured.

The invention discloses a method and equipment for multimedia data transmission. A universal mobile terminal and video equipment are matched, multimedia data is collected by utilizing the mobile terminal, and an appropriate coding scheme is selected through combining the hardware specification of the mobile terminal and a connection manner between the mobile terminal and the video equipment, so that the video equipment is capable of implementing optimal multimedia transmission according to the network condition. The performance of a transmission channel and the performance of the terminal are combined and utilized to the greatest extent, and the multimedia data transmission at high quality is implemented. The performance requirements on a set-top box are reduced, the equipment cost for service development is saved and the utilization rate of the equipment is improved.

The embodiment of the invention provides a method and a device for transmitting stream media and relates to the field of communication technology. The invention provides the technical scheme for improving the acceptance experience of users for H.264 steam media as follows: obtaining data frames from the H. 264 data stream in turn; packing and converting the obtained data frames into a PES (photoelectric scanner) packet; converting the PES packet into a TS (transport stream) packet, and inserting PCR (program control register) information and PSI (program special information) data in the TS packet according to the frame rates of the data frames; converting the TS packet into a RTP (real-time transport protocol) packet; and transmitting the RTP packet according to a RTCP (time transport control protocol) message transmitted by a client. The method and the device are suitable for multimedia transmission in a 3G (The Third Generation Telecommunication) network.

The invention discloses a video transmission-oriented network bandwidth detection and prediction method and a video transmission-oriented network bandwidth detection and prediction system. The network bandwidth detection and prediction method comprises the following steps of calculating a current available network bandwidth according to a media stream length and receiving time; and predicting an available bandwidth at the next moment according to network bandwidths in the first N time intervals by utilizing a normal-distribution-based bandwidth prediction model. According to the method and the system, the bandwidth is measured in a way of adding information to a media stream, so that the shortcoming of requirements on the transmission of a great number of test data packets in the conventional method is overcome, the available bandwidth of a network can be quickly acquired under the condition of no influence on multimedia transmission, and the method and the system are high in practicability; and the normal-distribution-based bandwidth prediction model is also used for quickly and accurately predicting the available bandwidth of the network at the next moment according to measured data, and quick regulation and accurate prediction can be realized even under the condition of greater bandwidth changes.

A visual communication method adapted to microblogs is provided. The visual communication method comprises analyzing, by a server, a user's input text using context and words, extracting, by the server, a picture corresponding to the text using a multimedia classification system data base, creating, by the server, an avatar representing the user, synthesizing, by the server, the picture and the avatar into one multimedia form, and transferring, by the server, the synthesized multimedia to the user's microblog.

The invention belongs to the technical field of mobile communication and discloses a multimedia cooperative sharing method based on a P2P-BT in a VANET. Firstly, to implement a PB-MCSM well in the VANET, a VANET hierarchical structure is established according to characteristics of a general P2P-BT in combination with the characteristics and motion trail of different vehicles in the VANET; then a multimedia query algorithm based on distributed Tracker servers is proposed for a problem that the multimedia resource query rate is low in the VANET; and then a tree-shaped returning algorithm based on indirect reciprocity game is proposed so that it is ensured that a vehicle also uploads while downloading and thus transmission delay caused by selfishness and chain scission is solved. The beneficial effects and advantages of the multimedia cooperative sharing method based on the P2P-BT in the VANET are that the method is capable of simulating the multimedia transmission state of nodes under a practical environment and applicable to a selfish VANET environment. Experiments show that the method improves successful query rate and returning rate of multimedia resources in the VANET and reduces returning delay in a returning process and improves the satisfaction degree of a vehicle user.

The present invention relates to improved methods and systems for transmission of images overlaid on video, particularly images requiring high levels of responsivity (e.g. mouse pointers) relative to the underlying video, from a computing device to a television. In one embodiment, the present invention is directed to a method of transmitting at least one video frame with an overlaid image, comprising the steps of capturing at least one frame of video data separate from the overlaid image at a first rate, capturing the overlaid image separate from the frame of video data at a second rate, packetizing the captured frame of video data, packetizing the overlaid image, wherein the frame video data are in data packets separate from the overlaid image data packets, and transmitting separate video data packets and overlaid image data packets.

A multimedia transfer apparatus is described comprising: a plurality of media readers; one or more encoder modules, configured to encode data read by the media readers in a specified encoding format; and a data communication interface configured to copy the encoded data to a media storage and playback apparatus.Also described is a computer-implemented method for transferring multimedia content comprising: reading first multimedia data from a first CD / DVD; encoding the first multimedia data to produce first encoded data in parallel with reading multimedia data from a second CD / DVD; encoding the second multimedia data to produce second encoded data; and transmitting the first and second encoded data to a multimedia storage and playback apparatus.

The invention discloses a transmission control method for multimedia data in network equipment. In the transmission control method, the buffer memory of exchange equipment is effectively managed; the buffer management of the exchange equipment is divided into a global control part and a queue control part by combining the sensitive characteristics of multimedia data to time delay and packet loss rate and utilizing dynamic threshold control of the transmission level based on voice quality measurement; in the global control part, the threshold is controlled by judging different transmission scenes to guarantee the transmission property under different transmission scenes; in the queue control part, the threshold is divided and regulated based on the transmission level parameters in the voice quality measurement to guarantee the transmission quality of multimedia; and in the dynamic regulation of the threshold, the regulation is performed by adopting a method for controlling according to proportions, and the network multimedia transmission quality is improved by effectively controlling the buffer resources of the exchange equipment.

The invention discloses intelligent gateway equipment based on multi-network integration and a community management intercom system. According to the intelligent gateway equipment based on multi-network integration and the community management intercom system, system operation cost is reduced, installation is convenient and fast, subsequent maintenance and management are convenient, and life experience can be provided for an owner more conveniently and fast. The community management intercom system comprises the intelligent gateway equipment, a community terminal server, remote intelligent equipment, a property management platform, an owner service platform, a common fixed-line telephone, and a common mobile phone, wherein the intelligent gateway equipment comprises a main control board, and a main control unit, a sound interface unit connected with the main control unit through a real-time multimedia transmission unit, a video interface unit, a network interface unit, a phone interface unit and a mobile network communication unit are arranged on the main control board. According to the intelligent gateway equipment based on multi-network integration and the community management intercom system, the community management intercom system uses the intelligent gateway equipment as the core and is based on the owner service platform and the property management platform, the functions of a building intercom system are achieved through the existing internet, a telecom communication network, a mobile network by means of the fixed-line telephone, the mobile phone and the intelligent equipment of the owner, and the system is expanded to achieve movability, flexibility and high efficiency.