Abstract:
Disclosed is an apparatus and method for processing transport streams (TSs) and a delay-controlling apparatus that assigns a predetermined delay to MPEG-2 TS packets fed into a POD module in a digital cable broadcasting system, irrespective of a time delay caused by descrambling scrambled input TS packets, the apparatus including: a demultiplexer for receiving TSs and dividing them into scrambled and non-scrambled data; a descrambler controller for receiving the scrambled data from the demultiplexer and descrambling it; a delay controller for receiving the non-scrambled data from the demultiplexer and the descrambled data from the descrambler controller and delaying them by a predetermined time; and a remultiplexer for receiving the data from the delay controller, multiplexing them, and outputting the multiplexed data in the TS format.
Abstract:
PURPOSE: A device and a method of photorefractive recording medium fabrication and a device and a method of 3-dimensional holographic display using the same are provided to use the photorefractive recording medium as a fringe diffraction field, thereby eliminating a computation time for a real-time computer-generated hologram upon display and enabling real-time vertical and horizontal hologram display with high resolution. CONSTITUTION: A control unit(10) controls point holograms for all coordinates of a virtual space to be respectively multiplexed and recorded in a photorefractive recording medium(15). A light source unit(11) cuts off and transmits beams and expands widths of transmitted laser beams under control of the control unit(10). A beam splitter(12) optically splits the laser beams of which the widths are expanded into an object beam and a reference beam. An object beam processing unit(13) cuts off or transmits the object beam, generates point holograms for all coordinates in the virtual space by spatially modulating the transmitted object beam, and then records the object beam in the photorefractive recording medium(15) by reducing the object beam to have a recordable beam width, under control of the control unit(10). A reference beam processing unit(14) varies the reference beam when recording the point holograms in the photorefractive recording medium(15) to have a different incident angle. A display unit(1) enlarges the holograms recorded in the optical photorefractive recording medium(15) to an observable size.
Abstract:
PURPOSE: A system for providing an electronic program guide and a method therefor are provided to easily and conveniently use program information by providing the program information in voice. CONSTITUTION: A service information receiver unit(10) receives and stores service information transmitted from broadcasting stations, and extracts EPG(Electronic Program Guide) information from the service information for storing the extracted EPG information. A graphic output unit(30) processes and displays video and data stream among the data received and processed from the service information receiver unit, or displays EPG information provided from an EPG processor(20). The EPG processor converts the EPG information stored in the service information receiver unit into sound EPG information. A voice output unit(40) converts characters and sentences provided from the EPG processor to voice signals. A user interface device(50) inputs user's request.
Abstract:
PURPOSE: A multiplexing device and its method according to user's request for multi-view 3D video are provided to process 3D video of multi-view points in consideration of user's display manner and system environments. CONSTITUTION: A multiplexing method according to user's request for multi-view 3D video includes the steps of generating image coding streams of n multi-view points corresponding to motion picture information input via n cameras at multi-view points(202), receiving back channel information input including display manner and view point information selected by a user(203), and multiplexing the coding streams of a predetermined number selected by the back channel information for the n coding streams. If 2D motion picture display is selected, a single coding streams corresponding to the view point desired by the user is multiplexed(204). In the case of panorama motion picture display or automatic both-eye type motion picture display, preset three coding streams preset are multiplexed for user's desired view points(205). In the case of both-eye type motion picture display, preset two coding streams are multiplexed for user's view points(206).
Abstract:
PURPOSE: A device for converting contents and a method thereof are provided to use contents manufactured adapted to a specific standard in a digital broadcasting system which is adapted to other standard. CONSTITUTION: A demultiplexing unit(10) demultiplexes an inputted digital broadcasting stream(BS1) and classifies the digital broadcasting stream(BS1) into a video stream(VS1), an audio stream(OS1), a broadcasting protocol stream(PS1), and a data stream(DS1). A conversion unit(20) converts each classified and inputted stream adapted to a standard to be broadcasted. A multiplexing unit(30) multiplexes each converted stream and a corresponding broadcasting protocol stream. A protocol server(40) supplies the broadcasting protocol stream corresponded to the broadcasting standard to the multiplexing unit(30). Because the video stream(VS1) is used as the same standard in each broadcasting stream, the audio stream(OS1), the broadcasting protocol stream(PS1), and the data stream(DS1) are converted only.
Abstract:
PURPOSE: A system and method for descrambling transport stream data are provided to descramble TS packet data inputted to a point of deployment module. CONSTITUTION: A system for descrambling transport stream data includes a transport stream packet input unit(20), a descrambling controller(30), and a descrambler(50). The transport stream packet input unit judges whether or not the transport stream data is descrambled using a header value of the TS packet data and outputs the judged result and TS packet data. The descrambling controller outputs a control signal to the TS packet input unit to allow the TS packet input unit to read the TS packet data and outputs a scrambling judgement signal according to the judged result. The descrambler judges whether or not the TS packet data is scrambled according to the scrambling judgement signal to vary descrambling process.
Abstract:
PURPOSE: A binocular motion-picture encoding/decoding system and method for supporting a multi-display mode are provided to minimize occupancy of a channel and delay in decoding due to transmission of unnecessary data. CONSTITUTION: A binocular motion-picture encoding system that supports a multi-display mode according to user display information includes a field divider(210), an encoder(220), and a multiplexer(230). The field divider divides received left-eye and right-eye images into a left-image odd field(LO), a left-image even field(LE), a right-image odd field(RO), and a right-image even field(RE). The encoder encodes the fields divided by the field divider through estimation for motion and parallax compensation. The multiplexer multiplexes a necessary field among the fields received from the encoder according to the user display information.
Abstract:
PURPOSE: A system and a method for processing message statistics are provided to generate an XML(eXtensible Markup Language) type of target file by considering the architecture of real data, for downstream and upstream messages flowing through a network controller connected between an IP(Internet Protocol) network and a cable network, and to store a result value of statistical data in a target table through parsing by elements to confirm the value of the target table. CONSTITUTION: A transceived message collector(21) collects upstream and downstream messages of a network controller. A database(24) stores data. A transceived message storage(22) stores the messages collected in the transceived message collector(21), if the collected messages exceed a predetermined amount. A statistical function executor(23) processes statistics of the messages stored in the database(24) through the function defined by a user. A statistical result storage(25) converts an executed result of the statistical function executor(23) into an XML file, to store the file in the database(24) as a target table. And a main memory(30) stores a result of the statistics processing by the statistical function executor(23).
Abstract:
PURPOSE: A program and system information protocol(PSIP) converting apparatus and method and a digital cable television broadcasting system using the PSIP converting apparatus are provided to convert PSIP of ground-wave broadcast and SI protocol of satellite broadcast into PSIP in cable broadcasting format in real time. CONSTITUTION: A PSIP converting apparatus includes a protocol data extraction unit(202), a protocol data conversion unit(203), a protocol data insertion unit(204), and a system controller(207). The protocol data extraction unit demultiplexes a digital ground-wave broadcast transport stream or satellite broadcast transport stream to extract A/V data and PSIP/PSI from the ground-wave broadcast transport stream and to extract A/V data and SI/PSI data from the satellite broadcast transport stream. The protocol data conversion unit generates PSIP/PSI data in a digital cable TV broadcast format, corresponding to the extracted PSIP/PSI data or SI/PSI data. The protocol data insertion unit inserts the PSIP/PSI data in the digital cable TV broadcast format into the extracted A/V data to generate a digital cable broadcast transport stream. The system controller controls the operations of the units.
Abstract:
PURPOSE: An adaptive prediction directivity searching method for block matching motion estimation, which estimates motion vector using time correlation in continuous frames of a motion picture and spatial correlation between blocks in the current frame, is provided to improve compression performance and prevent local searching caused by insufficient information. CONSTITUTION: A motion direction of the current frame block is calculated using motion vector of the previous frame block and motion vector of the previous blocks in the current frame. The first search point is calculated in the calculated motion direction of the current frame block. A search area is set based on the first search point, and motion vector is found from search points constructing the searching area.