Abstract:
Provided is a method for providing three-dimensional (3D) contents service based on digital broadcasting. The method includes the steps of: a) extracting Program Association Table (PAT) information on Packet Identification (PID); b) acquiring Program Map Table (PMT) PID from the extracted PAT; c) analyzing version_number and Contents_type_descriptor and dividing typical broadcasting contents and 3D broadcasting contents; d) extracting the PID for each media stream formed for a reference image and a 3D additional information broadcasting service; e) extracting a corresponding media stream in the Transport Stream and transmitting the media stream to a corresponding decoder; and f) recovering an image of the transmitted media stream in the decoder and displaying the media stream.
Abstract:
A low density parity check (LDPC) encoder, an LDPC decoder, and an LDPC encoding method are disclosed. The LDPC encoder includes first memory, second memory, and a processor. The first memory stores an LDPC codeword having a length of 64800 and a code rate of 5/15. The second memory is initialized to 0. The processor generates the LDPC codeword corresponding to information bits by performing accumulation with respect to the second memory using a sequence corresponding to a parity check matrix (PCM).
Abstract:
A low density parity check (LDPC) encoder, an LDPC decoder, and an LDPC encoding method are disclosed. The LDPC encoder includes first memory, second memory, and a processor. The first memory stores an LDPC codeword having a length of 16200 and a code rate of 5/15. The second memory is initialized to 0. The processor generates the LDPC codeword corresponding to information bits by performing accumulation with respect to the second memory using a sequence corresponding to a parity check matrix (PCM).
Abstract:
A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 4/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 16-symbol mapping.
Abstract:
Se divulgan un modulador y un método de modulación que usan una constelación de señal de 16 símbolos no uniforme; el modulador incluye una memoria y un procesador; la memoria recibe una palabra código que corresponde con un código de verificación de paridad de baja densidad (LDPC) que tiene una tasa de código de 7/15; el procesador mapea la palabra código a 16 símbolos de la constelación de señal de 16 símbolos no uniforme sobre una base de 4 bits.
Abstract:
Se describe un codificador de revisión de paridad de baja densidad (LDPC), un decodificador de LDPC y un método codificador de LDPC; el codificador de LDPC incluye una primera memoria, una segunda memoria y un procesador; la primera memoria almacena una palabra código de LDPC que tiene una longitud de 64800 y un índice de código de 7/15; la segunda memoria es inicializada a 0; el procesador genera la palabra código de LDPC que corresponde a los bits de información al realizar acumulación con respecto a la segunda memoria al usar una secuencia que corresponde a una matriz de revisión de paridad (PCM).
Abstract:
A modulator and a modulation method using a non-uniform 16-symbol signal constellation are disclosed. The modulator includes a memory and a processor. The memory receives a codeword corresponding to a low-density parity check (LDPC) code having a code rate of 4/15. The processor maps the codeword to 16 symbols of the non-uniform 16-symbol signal constellation on a 4-bit basis.
Abstract:
A modulator and a modulation method using a non-uniform 16-symbol signal constellation are disclosed. The modulator includes a memory and a processor. The memory receives a codeword corresponding to a low-density parity check (LDPC) code having a code rate of 2/15. The processor maps the codeword to 16 symbols of the non-uniform 16-symbol signal constellation on a 4-bit basis.
Abstract:
Provided is a five sensory data synchronizing and transmitting apparatus and method, and an actual-feeling multimedia data providing system and method using the same. The five sensory data synchronizing and transmitting apparatus and method forms packets by describing vibration, an odor and a taste expressed in video/audio based on touch, odor and taste data descriptors and synchronizes the touch/odor/taste packets with video/audio packets on a frame basis; and then, the actual-feeling multimedia data providing system and method demultiplexes the received packets transmitted from the five sensory data synchronizing and transmitting apparatus into video data, audio data, touch data, odor data and taste data and transmits them to corresponding devices to thereby provide a user with an actual-feeling multimedia service.