Abstract:
Provided are a method and apparatus for transmitting stereoscopic video information based on digital broadcasting. The method for transmitting stereoscopic video information according to the present invention comprises: constructing a signaling table including stream-type information; and transmitting the video information including the signaling table information and video data information. According to the present invention, various types of stereoscopic video services may be provided.
Abstract:
The present invention relates to a multimedia broadcast signal transmitting/receiving method, and it generates a pilot signal by mapping transmission information on an orthogonal code, disperses the pilot signal in the frequency domain, modulates the dispersed pilot signal, and transmits the modulated pilot signal.
Abstract:
A hierarchical demodulation device channel estimates a reference symbol based on a given symbol to generate a channel estimate of the reference symbol, channel estimates a plurality of information symbols based on the channel estimate of the reference symbol to generate channel estimates of a plurality of information symbols, channel estimates a plurality of service symbols based on the channel estimates of a plurality of information symbols to generate channel estimates of a plurality of service symbols, channel equalizes a signal based on the channel estimate of the reference symbol, the channel estimates of a plurality of information symbols, and the channel estimates of a plurality of service symbols, and hierarchically separates the channel equalized signal to generate a first hierarchical modulation signal and a second hier¬ archical modulation signal. Therefore, receiving performance of the low priority signals can be improved without influencing the high priority signals while maintaining compatibility with the existing system.
Abstract:
A hierarchical modulation device modulates a plurality of first hierarchical symbols according to a first modulation method to generate a plurality of first hierarchical modulation symbols, inserts a plurality of pilot symbols into a plurality of second hierarchical symbols to generate a plurality of pilot insertion symbols, modulates a plurality of pilot insertion symbols according to a second modulation method to generate a plurality of second hierarchical modulation symbols, and maps a plurality of first hierarchical modulation symbols and the plurality of second hier archical modulation symbols in the signal space to generate a plurality of hierarchical modulation symbols. Therefore, the hierarchical modulation device can improve receiving performance of the enhancement layer without influencing the base layer.
Abstract:
In a terrestrial DMB, a transmitting apparatus multiplexes a plurality of service streams generated for any service to a plurality of ensembles. In this case, the same sending time data is constructed in a time stamp field of each frame for each of a plurality of ensembles. With this configuration, a plurality of transmitting apparatuses can send a plurality of transmission frames including service streams for the same service at the same point of time, and thus receiving apparatuses can actually receive a plurality of transmission frames at the same point of time.
Abstract:
Provided are an apparatus and method of transmitting and receiving associated broadcasting contents based on a heterogeneous network. The transmission system generates a basic contents stream for basic contents configuring the broadcasting contents to transmit the basic contents stream to a terminal through a broadcasting network, generates an additional contents stream for additional contents associated with the basic contents to transmit the additional contents stream to the terminal through a communication network, and further transmits at least one of associated playing information on the basic contents and associated playing information on the additional contents to the terminal, and the reception terminal receives the basic contents stream, the additional contents stream, and the associated playing information and synchronize the basic contents and the additional contents with each other to play them, thereby playing the broadcasting contents in real time.
Abstract:
Disclosed herein are a transmission apparatus and method and a reception apparatus and method for a program associated stereoscopic broadcasting service. The transmission apparatus includes: a real time stream encoder generating a real time stream by encoding a reference image; a non-real time (NRT) stream encoder generating an NRT stream based on an additional image; an image synchronization information generator generating a service signaling and image synchronization information (including an event information table (EIT) and a program map table (PMT)) stream for synchronizing the reference image and the additional image with each other based on 3D content synchronization information; and a re-multiplexer generating a program associated stereoscopic broadcasting stream by multiplexing the real time stream, the non-real time stream, and the service signaling and image synchronizing information stream.
Abstract:
Disclosed are an apparatus and a method for transmitting a broadcasting service capable of signaling non-real-time 3D broadcasting content. An apparatus for transmitting a broadcasting service includes: a non-real-time (NRT) content encoder encoding stereoscopic image content including a reference image and an additional image to generate an NRT stream; an NRT signaling information encoder generating NRT signaling information including at least one of a service map table (SMT) and a non-real-time-information table (NRT-IT) that correspond to the content; and a multiplexer multiplexing the NRT stream and the NRT signaling information and transmitting the multiplexed NRT stream and NRT signaling information to a receiving apparatus. Therefore, content can be provided even when the reference image and the additional image are encoded into the single file format in the dual stream type.
Abstract:
An apparatus for transmitting digital multimedia broadcasting includes: a base layer processor that outputs a base layer stream; an enhancement layer processor that outputs an enhancement layer stream; and a transmitter that modulates the enhancement layer stream based on one of a first and second hierarchical modulation modes using different modulation schemes and maps a symbol of the modulated enhancement layer stream based on a symbol position of the base layer stream to generate a transmission frame.