33results about "Digital video bradcasting handheld" patented technology

Methods and apparatus for transmitting and receiving data having a data stream in a wireless broadcast system are provided. A frame is generated. The frame includes preamble section and a data section. The data section carries the data stream. The preamble section carries signalling information. The frame is transmitted to a receiver. In generating the frame, the data section of the frame is segmented into a plurality of frequency zones, and the data stream is mapped to a frequency zone of the plurality of frequency zones. The signalling information includes segmentation information of the frequency zones.

A method is performed in a receiver including a number of modules. The method includes receiving information in a reception frequency band. Responsive to a notification from a transmitter of a transmission in a predetermined transmission frequency band, at least one countermeasure is performed by at least one of the modules. The at least one countermeasure is predetermined to reduce an effect of interference caused by transmission on reception of the information in the reception frequency band. Countermeasures include freezing an automatic gain control loop, freezing a synchronization loop, discarding channel estimation data, and blanking received information. Transmission power and transmission mode are also used to determine whether and how many countermeasures are used. Additionally, handover is improved by waiting until transmission is complete to determine receiver signal strength of signals from potential transmitters for handover.

A hybrid satellite / terrestrial wireless network having a plurality of terrestrial cells and satellite coverage areas is disclosed. A multiplex transmitted in a terrestrial cell may include signaling information for neighboring terrestrial cells and neighboring satellite coverage areas. The signaling information may include indicators identifying different profiles for the hybrid satellite / terrestrial network, and include other information enabling handover from the terrestrial cell multiplex to one of the neighboring terrestrial or satellite multiplexes.

An apparatus and method for transmitting / receiving a notification message in a Digital Video Broadcasting (DVB) system are provided, in which a terminal detects an Access Point (AP) from an Electronic Service Guide (ESG) bootstrapping session, queries the AP to request a notification message list or all or part of a notification message over a communication channel, and receives the notification message list or all or part of the notification message from the AP.

Provided is an apparatus and a method for transmitting / receiving Electronic Service Guide (ESG) data in a digital video broadcasting system. The method includes creating ESG data bursts by grouping ESG data supporting a plurality of languages for each ESG support language; establishing sessions corresponding to respective ESG data bursts; creating ESG setting data including session information and ESG grouping criteria information, the session information including Internet Protocol (IP) addresses and port numbers corresponding to the entire sessions, respectively, the ESG grouping criteria information indicating that the ESG data bursts are grouped for each ESG support language; and broadcasting the ESG setting data via a specific session and broadcasting the ESG data bursts via the established sessions.

Certain aspects of a method and system for processing multimedia data may include receiving a DVB-H signal via a DVB-H receiver integrated within a cable modem. The cable modem may include a wireless interface and / or a wired interface. The received DVB-H signal may be routed from within the cable modem to a multimedia device coupled to the cable modem via the wired or wireless interface. An audio signal and / or a video signal may be generated based on the received DVB-H signal, and may be communicated to a multimedia device communicatively coupled to the cable modem. The wired interface may comprise an Ethernet interface or a serial interface. The wireless interface may comprise a WLAN interface. The multimedia signal may include a multimedia standard native to the multimedia device.

An improved system and method for transmitting a multiplexed service stream over an error prone DVB-H channel. Media IP packets are priority labeled. For each time slice burst, the IP packets are grouped based upon the priority labels. MPE-FEC matrices are made for the different priority labels in each time slice burst. RSDT columns are computed such that the average service bit rate does not overshoot the maximum allowed service bit rate, and the protection increases with priority. The ADT and RSDT of the MPE-FEC matrices are then encapsulated into MPE-FEC sections.

Disclosed is a DVB-H CBMS system by which a user can continue to view a program being in service even when the transport stream or IP platform changes while the user views the program. In the DVB-H CBMS system, the system transmits service mapping information according to transport streams or IP platforms to the terminal, so that the system can provide a service without interruption to the terminal even when a user of the terminal moves out of a current cell or network into a new cell or network while receiving a service that the user selected.

An apparatus and method for transmitting / receiving a notification message in a Digital Video Broadcasting (DVB) system are provided, in which a terminal detects an Access Point (AP) from an Electronic Service Guide (ESG) bootstrapping session, queries the AP to request a notification message list or all or part of a notification message over a communication channel, and receives the notification message list or all or part of the notification message from the AP.

Disclosed is a digital broadcast receiver including a Digital Multimedia Broadcasting (DMB) module for receiving digital broadcastings of multiple channels; an output unit for outputting voice and image signals of the digital broadcastings; and a controller for controlling the DMB module to receive the digital broadcastings while successively and automatically switching the channels at a predetermined time interval, and controlling the digital broadcasting data received in the DMB module to be transmitted to the output unit.

Methods, apparatus and computer program products are defined for a hybrid mobile broadcast service. By forming hybrid services from both wide area components and local area components, hybrid services are able to be regionalized so as to meet the needs of the users in given a locale or region. In one example, a wide area video component may be combined with a local area alternate language to provide an alternate language service to a specified geographic region within the mobile broadcast network. In additional aspects, multiple local area infrastructures can be combined to form a regionalized infrastructure for the purpose of delivering the hybrid service across a designated region.

A method of operating a wireless network operating on a single frequency across a geographical area involves dividing the network into regions and arranging that the transmission of signals in subsets of adjacent regions on the same frequency is such that a receiver does not receive signals from more regions than can be separated using demapping techniques. The transmission method evolves a pattern of time slots such that the number of adjacent regions of a subset of regions transmitting simultaneously on a single frequency is less than the number of signals that each receiver is capable of demapping. The demapping arrangements may include MIMO techniques, constellation schemes, QAM.

Apparatuses may perform and methods may include: receiving a digital broadcast signal that includes an Electronic Service Guide (ESG); extracting and assembling the ESG; extracting from the ESG signaling information which links one or more services in an upper level layer of a broadcast protocol to a physical layer of the broadcast protocol. Based on the signaling information, one or more services from a broadcast system may be accesses.

A mobile terminal and method of controlling a broadcast therein are disclosed, by which a currently-output broadcast content can be continued to be output despite expiration of a validity term of a broadcast viewing authority. The method includes acquiring a first broadcast viewing authority, receiving and outputting a first broadcast content if the first broadcast viewing authority is acquired, determining whether a validity term of the acquired first broadcast viewing authority expires within a broadcast time of the output first broadcast content, and if the validity term expires within the broadcast time, displaying an image for a purchase of the first broadcast content.

A method and system for providing a broadcast / multicast (BCAST) service, are provided. The method includes obtaining, by the terminal, at least one BCAST service from a visiting network when the terminal roams in the visiting network.

Methods and system for transmitting a DVB-H network ID in transmission parameter signaling (TPS) data are described. A sixteen bit DVB-H network ID may be divided into four four-bit portions, and each four-bit portion may be included in an orthogonal frequency division multiplex (OFDM) TPS frame transmitted by the DVB-H network. Because each OFDM TPS frame also includes a frame order of that frame within its corresponding super-frame, a receiver of the TPS data can reassemble the network ID by ordering the four received portions according to the frame order of the respective OFDM TPS frames in which they were received. The sixteen bit DVB-H network ID may alternatively be divided into two eight-bit portions, and each eight-bit portion may be included in the cell_ID bits of two frames of a super-frame.

A decoding circuit applied to a multimedia apparatus is provided. The decoding circuit is for decoding encoded data to generate system information, and includes multiple processing circuits and a determination circuit. The multiple processing circuits individually process the encoded data to generate multiple processed signals, and respectively correspond to multiple bit combinations of a part of the system information. The determination circuit determines the system information according to the multiple processed signals.

A method and system for providing a broadcast / multicast (BCAST) service, are provided. The method includes obtaining, by the terminal, at least one BCAST service from a visiting network when the terminal roams in the visiting network.