76results about "Digital media broadcasting" patented technology

Provided are a method and apparatus for providing an Internet Protocol Datacasting (IPDC) service. The IPDC service providing apparatus includes a data input unit generating an IP packet and signaling information of the IP packet; a packet generation control unit determining a type of an Internet Protocol Data Group (IPDG) packet that is to be generated by encapsulating the IP packet, on the basis of characteristics of the IPDC service; an IPDG packet generation unit generating an IPDG packet according to a data type of the IP packet, and generating an IPDG packet for the signaling information of the IP packet; a transfer stream packet generation unit generating the IPDG packet as a transfer stream packet; and a transfer unit transmitting the transfer stream packet. Accordingly, it is possible to provide an IPDC service while efficiently using a bandwidth, in a Digital Audio Broadcasting (DAB) system.

An apparatus for providing a supplementary function of digital multimedia broadcasting includes a control unit that receives a selected instruction message for a digital multimedia broadcasting signal input by a user, a demodulating unit that receives a digital multimedia broadcasting signal corresponding to the selected instruction message by using at least one tuner, a reception sensitivity confirming unit that confirms the reception sensitivity of the received digital multimedia broadcasting signal, and a determining unit that determines whether the received digital multimedia broadcasting signal is output in accordance with the confirmed reception sensitivity.

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.

The present invention relates to a system for transmitting and receiving audio, particularly, to a method and apparatus for transmitting and receiving of object-based audio contents, which packetizes audio objects having the same characteristic. To achieve the above, the present invention includes filtering a plurality of ESs according to common information, adding a packet header to the respective filtered ESs and generate ES packets, aggregating all the generated ES packets and then adding a multi-object packet header to the aggregated ES packets to generate an object packet, and multiplexing the generated object packet, packetizing the multiplexed object packet according to a transmitting media and transmitting the packetized object packet.

To provide a photosetting / thermosetting resin composition for a printed wiring board which exhibits temporally stable coating properties in screen printing, curtain coating, spray coating, roll coating and in other methods and is superior in heat resistance, adhesion and electrical insulation, and to provide a printed wiring board which uses the same. The photosetting / thermosetting resin composition comprises (A) a carboxylic resin, having one or more carboxyl groups in one molecule, (B) a photopolymerization initiator, (C) a polyhydroxycarboxylic ester additive, (D) a diluent, (E) a filler and (F) an epoxy resin, wherein the polyhydroxycarboxylic ester additive (C) is preferably xylene-free.

In a next-generation vehicle image display system, a plurality of electronic control units for controlling a number of electronic parts mounted to a vehicle are organically connected by a vehicle network line. A display information processor receives all information from each of the electronic control units, which are transferred via the vehicle network line; and then sorts out all information relevant to any trouble in the vehicle that should be displayed to a user in real time, in a predetermined order of priority. An image display unit combines the information to be displayed to the driver at all times and the information sorted by the display information processor to suit real-time situations; and displays the information graphically. With the system described above, all kinds of vehicle internal information can be processed efficiently and displayed freely to the driver.; Accordingly, the driver can quickly and accurately learn any kind of information about the vehicle as well as information on any trouble in the vehicle through the image display unit, thereby avoiding an accident in advance.

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.

The invention belongs to DMB data transmission technique, characterized by arranging a DMB control part within a mobile communication terminal, the control part and a telephone part share an antenna, and a wireless signal receiving part to determine, in a DMB data from broadcasting center, whether notifying codes for for notifying important DMB data is inserted thereto. If the notifying codes arearranged, the DMB control part directly notifies user using a second loudhailer or a second liquid crystal display screen of the mobile communication terminal; if it is an ordinary calling service, the DMB control part directly puts through a modem of a mobile station to make the telephone part carry out the calling service, and this facilitates uaser of the mobile communication terminal.

A method for direct sampling of a plurality of radio bands, including a step of receiving a first radio band via a first interface and at least one additional radio band via at least one additional interface, the first radio band and the at least one additional radio band each being associated with different frequency ranges, and the first radio band or the at least one additional radio band being a DAB band. Furthermore, a selection signal is received via an interface, the selection signal indicating whether further processing of the first radio band and / or the at least one additional radio band takes place. Depending on the selection signal, the first radio band is sampled at a common sampling frequency and / or the at least one additional radio band is sampled at the common sampling frequency.

A method of upgrading software through a software download in a T-DMB terminal includes the steps of confirming, by the T-DMB terminal, an announcement message containing information for announcing when the software is downloaded by receiving a T-DMB signal and analyzing a plurality of fast information groups (FIGs), determining whether the software is downloaded according to information contained in the announcement message, if it is determined that the software is downloaded, storing ensemble information and download start time information among the information contained in the announcement message; matching a current ensemble with the stored ensemble when time according to the download start time information elapses, and confirming a signaling message for informing that the software is downloaded by analyzing an FIG received through the matched ensemble, and downloading the software.

A transmission device and receiving device for providing high-quality multimedia services in a digital multimedia broadcasting (DMB) transmission system is provided. The transmission device separatesinput multimedia contents into a base layer elementary stream and an enhancement layer elementary stream, encodes the base layer elementary stream and the enhancement layer elementary stream, transforms the base layer elementary stream and the enhancement layer elementary stream into a base layer SL packet and an enhancement layer SL packet, transforms the base layer SL packet and the enhancementlayer SL packet into a base layer PES packet and an enhancement layer PES packet, and multiplexes the base layer PES packet and the enhancement layer PES packet according to a base layer elementary stream and an enhancement layer elementary stream and outputs a base layer TS packet and an enhancement layer TS packet.

A device and method are provided for processing multimedia broadcast-related events in a portable terminal, and include a memory for storing character UI images according to multimedia broadcast-related events, an event collection section for collecting the multimedia broadcast-related events generated in the portable terminal and for generating event messages for discriminating the generated multimedia broadcast-related events, an agent control section including a plurality of specialists for processing the multimedia broadcast-related events, the agent control section determining specialists corresponding to the event messages, selecting and outputting character UI IDs corresponding to the multimedia broadcast-related events of the determined specialist, and processing feedback information on the corresponding events according to the feedback information of a user, and an agent expression section for outputting character images and texts which correspond to the multimedia broadcast-related events and the feedback information.

Provided is an apparatus and method for hierarchical modulation transmission and reception of a scalable video bitstream. A transceiver for hierarchical modulation transmission and reception of a scalable video bitstream includes a splitter generating a (High Priority) HP bitstream having HP based on a base layer among a plurality of scalable layers included in the scalable video bitstream and a (Low Priority) LP bitstream having LP based on an enhancement layer among the plurality of scalable layers included in thescalable video bitstream.

A digital broadcasting terminal having a maximum frequency channel list providing function and a maximum frequency list providing method using the same are provided to produce viewing information whenever a user connects to a specific channel without allowing the user to directly input a favorite channel, update a maximum frequency channel list stored in the terminal, and offer the updated maximum frequency channel list to the user. A digital broadcasting modem(300) receives a digital broadcasting signal. A memory(320) stores a maximum frequency channel list including viewing information about at least one or more channels. When a digital broadcasting terminal is connected to a specific channel through the digital broadcasting modem(300), a control unit(310) produces viewing information about the connection of the specific channel, reflects the produced viewing information to the maximum frequency channel list, and updates the maximum frequency channel list.

A digital broadcast method, a digital broadcast apparatus, and a data structure thereof are disclosed. A digital broadcast Service Information (SI) data structure includes a Service Information (SI) structure equipped with a service and a service component, and transmits necessary data via a Fast Information Channel) and a Main Service Channel (MSC). The data structure includes an event identifier (EvtId) field for classifying a program varying with time in the service component in event units, and identifying the event in the SI, such that it provides program information.

A DMB receiver (101) performs DMB receive signal processing on a DMB signal to convert the DMB signal into an audio / video signal. The DMB receiver transmits an intermediate frequency (IF) band broadcast signal or a transmission stream (TS) generated in the DMB receive signal processing to an electrode unit (206). The electrode unit applies the IF band broadcast signal or the TS to a human body (110) as a DMB signal for human body communication.

An external antenna detection apparatus in a mobile terminal for receiving a satellite digital multimedia broadcasting (DMB) service. The external antenna detection apparatus includes at least one built-in antenna for receiving a gap filler signal; a detachable external antenna for receiving a satellite signal; a radio frequency (RF) module for transmitting / receiving a radio signal; an antenna connector for switching a reception path to one of a first path connected to the built-in antenna and a second path connected to the external antenna; a connector coupler for selecting the reception path according to whether the connector coupler is coupled to the antenna connector; and a baseband processor for processing a signal received through the first or second path via the RF module, monitoring a change in voltage-level signal, and detecting attachment and detachment of the external antenna according to the monitoring result.

The invention discloses a DAB broadcasting receiver and DMB broadcasting receiving method thereof. According to one side of the invention, The DAB broadcasting receiver comprises a demultiplexer which refers data information extracted from digital audio broadcasting frame into data containing video form; a first decorder, which is used as a software decorder for carrying out a first decoding of video among the classified data; a coder, which is used as a software coder for coding the decoded video in a first format, and transmitting to a data interface; a second decoder, which is used for decoding the video of first format received from the data interface and transmitting to the display part.

The invention relates to a method and apparatus for automatic gain control, capable of controlling the intensity of a signal applied to and received from a receiver for receiving a digital broadcast signal to a constant level. An input signal received by a gain error detector is compensated by a compensation signal to detect the gain error and the detected gain error is accumulated by a loop filter. The accumulated gain error value is compensated by a compensation signal generator based on a preset compensation function to generate a compensate signal and the received input signal detected bythe gain error detector is compensated according to the generated compensation signal.

User data is read from a medium having servo data and user data encoded thereon. The user data is read with a read / write head that is operable in a write mode and a read mode. Servo data is read in a time window following a transition from write mode to read mode, with a frequency passband that has a first low frequency corner. User data is read from the medium after expiration of the time window, with a frequency passband that has a second low frequency corner that is lower than the first low frequency corner.

Provided is a terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver. A T-DMB and DAB low IF receiver comprises a low noise amplifier (LNA), an image rejection down-conversion mixer, a low pass filter, an amplifier, a local oscillator, and a phase-locked loop. Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the local oscillator, and the phase-locked loop are integrated in a monolithic semiconductor integrated circuit substrate. Using the T-DMB and DAB low IF receiver allows a removal of a conventional SAW filter and the T-DMB and DAB low IF receiver can be easily integrated in the monolithic semiconductor integrated circuit substrate, and manufactured at low costs.

The invention discloses a digital radio receiver and method for providing digital multimedia radio. The digital radio receiver provided by the present invention includes: a first decoder which decodes signals of a service A to output a plurality of first frames in a cross connecting area where the service A broadcasted at a first area and a service B broadcasted at a second area are received; a second decoder which decodes signals of the service B to output a plurality of second frames; a comparison part which compares the plurality of first frames and the plurality of second frames which are respectively stored in a first buffer part and a second buffer part to determine whether the first frames and the second frames are the same frames, determines the frame of the plurality of second frames which is continuous with a finally outputted frame of the plurality of first frames in time, when the cross connecting area transmits in a second area under a condition that the cross connecting area outputs the plurality of first frames one by one, and starts to output the plurality of second frames one by one from the continuous frame. The service A and service B are broadcasts with the same service ID.

Provided is a terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver. A T-DMB and DAB low IF receiver comprises a low noise amplifier (LNA) 202, an image rejection down-conversion mixer 203, a low pass filter 204, an amplifier 205, a local oscillator 208, and a phase-locked loop 209. Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the local oscillator, and the phase-locked loop are integrated in a monolithic semiconductor integrated circuit substrate. Using the T-DMB and DAB low IF receiver allows a removal of a conventional SAW filter and the T-DMB and DAB low IF receiver can be easily integrated in the monolithic semiconductor integrated circuit substrate, and manufactured at low costs.

Disclosed is a network system for ground digital multimedia broadcasting (DMB). The DMB system includes a ground path and a satellite link path. The ground path includes a base station, modulating the first type signals received from the broadcasting center into the second type signals for ground DMVB, to transmit them to the receiver in the reception area. The satellite link path includes a satellite earth station, modulating the first type signals received into the third type signals with the bandwidth larger than that of the second type signals and transmitting them to the satellite; and a gap stuffer, receiving the third type signals to process the fourth type signals through executing the signals including the coding and crossed signals and converting the fourth type signals to the second type signals to transmit them to the receiver in the non-reception area. The third type signals include the fiducial time information and the gap stuffer uses the fiducial time information to transmit the second type signals with the base station simultaneously.

According to the device and method for the automatic gain control, the present invention controls the received signal intensity to a constant level by the receiver which is used to receive the exerted digital broadcast signal. With this end in view, it compensates the incoming signal received by the gain error detector by the compensating signal, detects the gain error, accumulate the gain error detected by the loop filter, and the compensating signal generator compensates the accumulated gain error by the prescheduled penalty function to generate the compensating signal, and compensates the received incoming signal detected by the gain error detector according to the generated compensating signal.

An apparatus for requesting black box images over a digital multimedia broadcasting (DMB) network, and an apparatus and method for searching black box images are disclosed. The apparatus for requesting black box images over a DMB network includes a request generation unit, an encoding unit, and a request transmission unit. The request generation unit generates information about a request for black box images to be collected. The encoding unit encodes the generated image request information into format suitable for transmission via a DMB data broadcast. The request transmission unit transmits the encoded image request information to apparatuses for searching black box images mounted on one or more vehicles through DMB broadcasting centers.

A broadcasting mobile terminal communication method and the broadcasting mobile terminal are disclosed. The method includes displaying a list of broadcast files stored on the terminal, in which at least one of the broadcast files is associated with broadcast related data stored on the terminal, and the broadcasting related data allows a user to obtain additional information about the at least one broadcast file. The method also includes selecting a broadcast file that is associated with broadcast related data, and connecting to an entity that provides the additional information about the at least one broadcast file.