71 results about "Mobile broadcasting" patented technology

A device providing an emergency alert service via a mobile broadcasting according to one embodiment of the present invention includes an RS frame encoder configured to generate an RS frame, which is a 2^nd dimensional data frame, in a manner of performing an RS (Reed-Solomon)-CRC (Cyclic Redundancy Check) encoding on an ensemble comprising a mobile data for a mobile broadcasting service and a service signaling channel containing an access information on the mobile broadcasting service, an RS frame divider configured to divide the generated RS frame into a plurality of RS frame portions, a signaling encoder configured to generate a signaling data comprising a TPC (Transmission Parameter Channel) for signaling a transmission parameter of the mobile broadcasting and a FIC (Fast Information Channel) containing a connection information between the ensemble and the broadcasting service, a data group formatter configured to generate a data group containing a part of the signaling data and the RS frame portion, and a broadcasting signal generating unit configured to generate a mobile broadcasting signal containing the data group.

An apparatus for receiving and processing a broadcast signal in a mobile broadcasting terminal is provided. A preprocessor receives a broadcast signal, converts the broadcast signal into a baseband signal, and then performs OFDM demodulation, Viterbi decoding, and convolutional deinterleaving thereon. A first Reed-Solomon (RS) decoder RS-decodes the signal output from the preprocessor, and outputs a Transport Stream (TS) packet. A checker checks Cyclic Redundancy Check (CRC) of the TS packet. A datagram extractor extracts a datagram having a good CRC result. A datagram controller receives the datagram having a good CRC result and outputs the received datagram to an application controller. The application controller decodes the broadcast data using the datagram received from the datagram controller and provides the decoded broadcast data to a user.

An encryption key distribution method for service and content protection in a mobile broadcasting system, and a system for the same which includes generating, by a network, a first encryption key when the broadcast service is first provided; transmitting a generalized rights object message, which includes identification information for identifying the generated first encryption key, to the terminal; generating a second encryption key before the lifetime of the first encryption key expires; and transmitting the generalized rights object message, which includes identification information for identifying the generated second encryption key, to the terminal.

A method for registering Broadcast/Multicast Service (BCMCS) in a mobile broadcasting system including an access terminal, a BCMCS server for providing a BCMCS service to the access terminal, and a mobile communication system connected to the BCMCS server. The access terminal exchanges information, necessary for BCMCS setup, with a BCMCS controller connected to the BCMCS server during a state wherein a session to the mobile communication system is set up. Upon receiving a BCMCS overhead from an access network in the mobile communication system, the access terminal transmits a message, including BCMCS identification information for a desired BCMCS service, to the access network. Upon receiving the message, the access network transmits a BCMCS connect setup message to a packet control function in the mobile communication system. Upon receiving the BCMCS connect setup message, the packet control function then transmits a registration message, including BCMCS information, to a packet data service node in the mobile communication system.

An apparatus and a method for providing broadcasting service information in a mobile broadcasting system are provided. The method for determining broadcasting service information includes determining a mapping table which matches information of a Service Map Table (SMT) and an Electronic Service Guide (ESG); determining at least one component ID in an SMT provided from a serving base station; determining whether there is an ESG matching to the component ID of the SMT using the mapping table; and, when detecting the ESG matching to the component ID of the SMT, determining service information by combining the ESG that matches the SMT with the SMT.

Disclosed herein is a video decoding system of a mobile broadcasting receiver. The video decoding system of a mobile broadcasting receiver for decoding a compression-coded video signal includes: at least one buffer memory for performing video decoding; a plurality of coprocessors including a data processing unit partitioned into one or more hardware blocks, wherein the data processing unit performs actual video decoding via data input/output from/to the buffer memory; and a DMA (Direct Memory Access) coprocessor for performing a direct access operation to an external memory, wherein, the at least one buffer memory, the plurality of coprocessors and the DMA coprocessor take the form of hardware, and operations thereof are controlled via software in a processor.

An apparatus and method for providing mobile broadcasting services through a communication network and a broadcast network, wherein a mobile terminal receives and stores Greenwich Mean Time (GMT) access address through an Electronic Service Guide (ESG) bootstrap File deLivery over Unidirectional Transport (FLUTE) session. The GMT access address is included in the ESG bootstrap FLUTE session when transmitted. The mobile terminal requests the GMT from the communication network using the GMT access address, receives the GMT from the communication network, and stores and sets the GMT.

Provided is an apparatus and a method for providing a three-dimensional (3D) broadcasting service that may provide a two-dimensional (2D) fixed broadcasting service using a fixed broadcasting signal or a 2D mobile broadcasting service using a mobile broadcasting signal when a transmitter transmits each of a left image and a right image constituting a 3D image using the fixed broadcasting signal or the mobile broadcasting signal, and the receiver receives the fixed broadcasting signal and the mobile broadcasting signal, or may provide a 3D broadcasting service by composing an image received using the fixed broadcasting signal and an image received using the mobile broadcasting signal into a 3D image.

A method of self-adaptable adjusting the sending power of the broadcasting station, which is applied to communicate information between a mobile station and a base station when the change of the fast decline and slow decline of a communication signal during the high speed running, according to the recorded values of the sending record queue of the sent groups, calculate the average retransmiting times in order to adjust the output power of the mobile broadcasting station dynamic ally, and then the channels are working in perfect state.

The invention relates to a high-power mobile broadcasting GEO satellite device and a transmission method. By adopting a compound feed source, the weight of a forward downlink antenna feed source array is reduced by more than 10%. In order to solve the problem brought by high-power components, the design of spatial power synthesis and output multiplex integration and antenna hierarchical power allocation is adopted. By adopting the spatial power synthesis technology, the loss is reduced by 1-2dB, and the synthesis efficiency is improved by about 5%. Through power synthesis and output multiplex integration, the loss is further reduced by 0.7-1dB, and the weight is reduced by 5%. For antenna hierarchical power allocation, components (such as a waveguide) with strong power bearing capacity (at 2000w level) are chosen for front-stage power division, and components (such as coaxial components) with small size and low weight (the size is reduced by more than 50% and the weight is reduced by 10% compared with the use of a waveguide) are chosen for rear-stage power division. In addition, a reverse link provides reverse service transmission capacity for a satellite. The high-power mobile radio GEO satellite device and the transmission method adapt to diversified development of broadcasting satellite service in the future, for example, user feedback, on-demand broadcasting and data acquisition capabilities can be provided. The satellite availability is improved.

An apparatus and method for measuring signal quality information in a mobile broadcasting network are provided, as well as a system supporting the same. A broadcast server provides a reporting condition for signal quality to a mobile terminal using a control message. The mobile terminal, when it satisfies the reporting condition, transmits a reporting message for signal quality to a management server managing signal qualities. The reporting message includes signal quality measurement results at the current location. In this way, information on the low-signal quality area is automatically collected from the mobile terminal, making it possible to rapidly and easily comprehend the sate of the mobile broadcasting network depending on the collected information.

Disclosed is a broadcast receiving device. A terrestrial broadcast receiving unit receives a terrestrial broadcasting service. A mobile receiving unit receives a mobile broadcasting service transmitted via a network for mobile communication. A control unit allows the terrestrial broadcasting service and the mobile broadcasting service to be selectively received.